• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a circuit (205) for recharging a battery (101) by a photovoltaic module (103), comprising: input (I +, I-) and output (0 +, 0-) terminals for to be respectively connected to the module and the battery; a converter (107) having input (ci +, ci-) and output (co +, co-) terminals respectively connected to the input and output terminals of the recharging circuit; a control circuit (109) having supply terminals (s +, s-) connected to the output terminals of the charging circuit; a switch (K2) connecting one of the output terminals (co +) of the converter to one of the output terminals (O +) of the charging circuit; and a detection circuit (207) configured for, when the voltage across the output terminals of the charging circuit exceeds a threshold, controlling the opening of the switch (K2) and stopping the converter for a predetermined period.
    公开号:FR3074619A1
    申请号:FR1761509
    申请日:2017-12-01
    公开日:2019-06-07
    发明作者:Mark VERVAART
    申请人:Commissariat a lEnergie Atomique CEA；Commissariat a lEnergie Atomique et aux Energies Alternatives CEA；
    IPC主号:
    专利说明:

    RECHARGE CIRCUIT OF AN ELECTRIC BATTERY BY MEANS OF A PHOTOVOLTAIC MODULE
    Field
    The present application relates to a circuit for recharging an electric battery by means of a photovoltaic module. It relates more particularly to a charging circuit protected against inadvertent disconnection of the battery.
    Presentation of the prior art
    There are many applications, for example autonomous lighting systems, in which a rechargeable electric battery is charged by means of a photovoltaic module.
    Conventionally, a circuit for recharging an electric battery by means of a photovoltaic module comprises:
    - a DC-DC switching converter having input terminals connected to the terminals of the photovoltaic module and output terminals connected to the terminals of the battery; and a control circuit adapted to control the switching converter to transfer electrical energy from its input terminals to its output terminals, that is to say from the photovoltaic module to the battery, in order to recharge the battery .
    B16650 - DD18218
    Generally, the control circuit is connected to the battery terminals for its supply.
    A problem which arises is that when the battery is inadvertently disconnected, that is to say while the photovoltaic module is still connected to the input of the charging circuit and the control circuit is active, it that is, it controls the switching converter to transfer electrical energy from its input terminals to its terminals
    exit there is a high risk circuit destruction recharging, and particular of control circuit of switching converter.To limit  this risk, the manufacturers of circuits of refill of this type advocate of never disconnect the electric heater of the circuit of refill without to have at
    previously disconnected the photovoltaic module.
    However, there is always a risk that this recommendation will not be followed by the user.
    It would therefore be desirable to be able to have a circuit for recharging an electric battery by means of a photovoltaic module, this circuit being intrinsically protected against inadvertent disconnection of the battery. summary
    Thus, one embodiment provides a circuit for recharging an electric battery by means of a photovoltaic module, comprising: first and second input terminals intended to be connected respectively to first and second terminals of the photovoltaic module; first and second output terminals intended to be connected respectively to first and second terminals of the battery; a switching converter comprising first and second input terminals connected respectively to the first and second input terminals of the charging circuit and first and second output terminals connected respectively to the first and second output terminals of the charging circuit; a control circuit of the switching converter, comprising
    B16650 - DD18218 first and second supply terminals connected respectively to the first and second output terminals of the charging circuit; a protection switch connecting the first output terminal of the switching converter to the first output terminal of the charging circuit; and an overvoltage detection circuit configured for, when the voltage between the first and second output terminals of the recharging circuit exceeds a threshold, controlling the opening of the protection switch and the stopping of the switching converter for a period predetermined inhibition.
    According to one embodiment, the overvoltage detection circuit is further configured to, at the end of the inhibition period, command the closing of the protection switch and the restarting of the switching converter.
    According to one embodiment, the control circuit is configured to control the switching converter as a function of the voltage and / or the output current of the photovoltaic module, measured on the first and / or second input terminals of the charging circuit. .
    According to one embodiment, the control circuit is configured to automatically adapt the control of the switching converter so as to maximize the output power of the photovoltaic module.
    According to one embodiment, the overvoltage detection circuit comprises a comparator, the output of which is connected to a recharging node of a timing circuit via a diode.
    According to one embodiment, the timing circuit comprises a first capacitor and a first resistor connected in parallel between the charging node of the timing circuit and the second output terminal of the charging circuit.
    According to one embodiment, the overvoltage detection circuit comprises a Zener diode connected in series with a second resistor between the first and second terminals of
    B16650 - DD18218 output from the charging circuit, the comparator having a positive input terminal connected to the midpoint between the Zener diode and the second resistor and a negative input terminal connected to a node for applying a reference voltage .
    According to one embodiment, the overvoltage detection circuit further comprises a resistive voltage divider bridge comprising a third resistor in series with a fourth resistor between the first and second output terminals of the recharging circuit, the application node of the reference voltage being connected to the midpoint between the third and fourth resistors.
    According to one embodiment, the recharging node of the timing circuit is connected to a control terminal of the protection switch, and to a control terminal of the control circuit of the switching converter.
    Another embodiment provides a system comprising a photovoltaic module, an electric battery and the above-mentioned recharging circuit, in which the first and second input terminals of the recharging circuit are connected respectively to first and second terminals of the photovoltaic module, and in which the first and second output terminals of the recharging circuit are connected respectively to first and second terminals of the battery. Brief description of the drawings
    These characteristics and advantages, as well as others, will be explained in detail in the following description of particular embodiments made without implied limitation in relation to the attached figures, among which:
    FIG. 1 is a simplified electric diagram illustrating, in the form of blocks, an example of a system for recharging an electric battery by means of a photovoltaic module;
    Figure 2 is an electrical diagram illustrating in more detail an embodiment of a switching converter of the system of Figure 1;
    B16650 - DD18218 FIG. 3 is a simplified electrical diagram illustrating, in the form of blocks, an example of an embodiment of a system for recharging an electric battery by means of a photovoltaic module; and FIG. 4 is an electrical diagram illustrating in more detail an embodiment of part of the system of FIG. 3.
    detailed description
    The same elements have been designated by the same references in the different figures. For the sake of clarity, only the elements useful for understanding the described embodiments have been shown and are detailed. In particular, the various uses which can be made of the charging circuits described have not been detailed, the embodiments described being compatible with the usual applications of a circuit for recharging an electric battery by means of a module. photovoltaic. Furthermore, in the examples of recharging circuits described, the production of the control circuit of the switching converter has not been detailed, the production of this circuit being within the reach of those skilled in the art from the functional indications of this description. The control circuit may for example be produced in analog electronics and / or in digital electronics, for example by means of a microcontroller. In the present description, the term connected will be used to denote a direct electrical connection, without an intermediate electronic component, for example by means of a conductive track, and the term coupled or the term connected, to denote either a direct electrical connection (meaning then connected) or a link via one or more intermediate components (resistor, capacitor, inductor, etc.). Unless specified otherwise, the expressions approximately, substantially, and of the order of mean to 10%, preferably to 5%.
    B16650 - DD18218
    FIG. 1 is a simplified electrical diagram illustrating, in the form of blocks, an example of a system for recharging an electric battery 101 (BAT) by means of a photovoltaic module 103 (MPV).
    The battery 101 comprises one or more elementary rechargeable electric energy storage cells (not detailed) connected in series and / or in parallel between a positive terminal B + and a negative terminal B- of the battery.
    The photovoltaic module 103 comprises one or more elementary photovoltaic cells (not detailed) connected in series and / or in parallel between a positive terminal M + and a negative terminal M- of the module.
    The system of FIG. 1 comprises a recharging circuit 105 comprising input terminals 1+ and I- connected, for example connected, respectively to the output terminals M + and M- of the module 103, and output terminals 0+ and O- connected, for example connected, respectively to terminals B + and B- of the battery.
    input clipping
    The charging circuit 105 includes a DC-DC converter Ci + and terminal cials
    107 (DC / DC) connected, by input 1+ comprising example and I- of the connected terminals, charging circuit respectively 105, example connected, respectively to the output terminals 0+ and Ciet of the output terminals co + and co- connected, by recharging circuit 105. The switching converter 107 comprises one or more cutting switches (not detailed in FIG. 1) controllable to transfer electrical energy from its input terminals ci + and ci- to the terminals co + and co- converter output.
    The recharging circuit 105 further comprises a control circuit 109 (CTRL) adapted to control the switching switch or switches of the converter 107 to control the transfer of electrical energy between the input terminals ci + and ci- and the terminals of co + and co- output of the converter. The control circuit 109 comprises in particular one or more
    B16650 - DD18218 CMD control terminals connected to the respective grids of the converter cutout switch (s) 107.
    In operation, the control circuit 109 draws its electrical supply from the battery 101. For this, the circuit 109 comprises supply terminals s + and s- connected, for example connected, respectively to the output terminals 0+ and O- of the charging circuit 105.
    In the example of FIG. 1, the control circuit 109 is adapted to control the converter 107 as a function of the voltage and / or of the output current of the photovoltaic module 103. For this, the control circuit 109 comprises terminals measurement m + and m- connected, for example connected, respectively to the input terminals 1+ and I- of the charging circuit. By way of example, the circuit 109 is adapted to automatically seek the maximum power point of the photovoltaic module 103, which depends in particular on the level of irradiation of the module. For this, the circuit 109 automatically adapts the frequency and / or the switching duty cycle of the switching switches of the converter 107 as a function of voltage and / or current measurements made via its terminals m + and m-, so as to place the photovoltaic module permanently as close as possible to its maximum power point, that is to say so as to maximize the output power (ie the product of the output current by the output voltage) of the photovoltaic module.
    In steady state, the photovoltaic module 103 supplies, between its terminals M + and M-, a direct current Ijy [at a direct voltage Vjy [, and the battery 101 receives, between its terminals B + and B-, a direct current Ig under a DC voltage Vg. The continuous-continuous conversion of the voltage Vjy [into the voltage Vg and of the current Ijy [into the current Ig is ensured by the switching converter 107.
    FIG. 2 shows the elements of FIG. 1 and illustrates in more detail an embodiment of the switching converter 107 of the recharging circuit 105.
    B16650 - DD18218
    In this example, the converter 107 is a voltage booster. It comprises an inductor L1 having a first end connected, for example connected, to the input node ci + of the converter, and a second end connected, for example connected, to an intermediate node or to the converter. The converter further comprises a switching switch K1, for example an N-channel MOS transistor, having a first conduction node connected, for example connected, to the node ni, and a second conduction node connected, for example connected, to the node input of the converter. The control output terminal CMD of the control circuit 109 is connected, for example connected, to a control terminal of the switch K1. In this example, the input nodes ci- and output co- of the converter are connected. The converter 107 further comprises a diode DI, the anode of which is connected, for example connected, to the node ni and the cathode of which is connected, for example connected, to the output node co + of the converter. The converter 107 of FIG. 2 further comprises an input capacitor C1 whose electrodes are connected, for example connected, respectively to the input terminals ci + and ci- of the converter, and an output capacitor C2 whose electrodes are connected , for example connected, respectively to the output terminals co + and co- of the converter.
    In operation, the control circuit 109 regulates the switching frequency and / or the duty cycle of the switch K1 to control the transfer of electrical energy between the photovoltaic module 103 and the battery 101.
    More generally, the recharging circuit of FIG. 1 is compatible with all or most of the known architectures of DC-DC converters. By way of example, the switching converter 107 may be a step-down, comprising for example the same elements as in the example of FIG. 2, but in which the switch K1 and the inductance L1 are connected in series Between
    B16650 - DD18218 the terminals ci + and co + of the converter, and in which the diode Dl is connected, by its anode, to the terminals ci- and co- of the converter, and, by its cathode, at the midpoint between the switch Kl and l inductance Ll.
    A problem which arises in a system of the type described in relation to FIGS. 1 and 2, is that, due to the presence of various capacitive elements in the recharging circuit 105 (and in particular of the output capacitor C2 in the example of FIG. 2), the stop of the operation of the control circuit 109 is not instantaneous in the event of disconnection of the battery 101. In other words, when the battery 101 is disconnected from the charging circuit 105, the control circuit 109 continues to control the switching of the switch or switches of the converter 107 during a relaxation period corresponding to the discharge time of the parasitic capacitance seen between the supply terminals s + and s- of the circuit 109. For example, the duration of this relaxation period can be from several milliseconds to several hundred milliseconds, during which the control circuit 109 continues to control the switching converter 107 p or transfer electrical energy from its input terminals ci + and ci to its output terminals co + and co-. If the photovoltaic module 103 has been previously disconnected from the recharging circuit, the parasitic output capacity of the recharging circuit is discharged until the operation of the control circuit 109, and therefore of the switching converter 107, is stopped, when the circuit 109 is no longer supplied. If, on the other hand, the photovoltaic module 103 has not been disconnected, electrical energy produced by the module 103 continues to be transferred to the output of the switching converter 107 during the relaxation period. As a result, the parasitic output capacity of the recharging circuit does not discharge. Due to the absence of the battery 101 to absorb the output current Ig of the converter 107, the output voltage of the recharging circuit then increases very quickly, until the
    B16650 - DD18218 destruction of the control circuit 109 and / or the switching converter 107.
    FIG. 3 is a simplified electrical diagram illustrating, in the form of blocks, an example of an embodiment of a system for recharging an electric battery 101, for example identical or similar to the battery 101 of FIGS. 1 and 2 , by means of a photovoltaic module 103, for example identical or similar to the module 103 of FIGS. 1 and 2.
    The system of FIG. 3 comprises a recharging circuit 205. The recharging circuit 205 comprises the same elements as the recharging circuit 105 of FIG. 1, arranged in substantially the same way.
    The recharging circuit 205 of FIG. 3 further comprises a switch K2 having a first conduction node connected, for example connected, to the output node co + of the switching converter 107, and a second connected conduction node, for example connected, at the output node 0+ of the recharging circuit 205. In other words, in the example of FIG. 3, the supply terminal s + of the control circuit 109 is separated from the output terminal co + of the switching converter 107 by l 'switch K2.
    The recharging circuit 205 of FIG. 3 further comprises an overvoltage detection circuit 207 connected to the nodes O- and 0+ of the output of the recharging circuit. The circuit 207 is adapted to detect an overstepping of a predefined threshold by the voltage Vg between the terminals O- and 0+ of the recharging circuit, and, when a breach of the threshold is detected, to command the opening of the switch K2 and stopping the switching converter during a predetermined inhibition period T-j_ n p. The threshold is chosen to be greater than the maximum nominal voltage VBATjyp ^ x of the battery 101, for example between 1.01 and 1.2 times the voltage VBATjyp ^ x.
    In the example shown, the detection circuit 207 comprises a first output terminal if connected, for example connected, to a control terminal of the switch K2, and a
    B16650 - DD18218 second output terminal s2 connected, for example connected, to an input terminal el of the control circuit 109. When the voltage Vg between the output terminals 0+ and O- of the charging circuit exceeds the threshold V ^ , the circuit 207 applies, for a continuous period T-j_ n p starting from the detection of the overvoltage, to its terminal si, a command signal to open the switch K2, and, to its terminal s2, a switch-off converter control signal. Thus, during the period T-j_ n p, the switch K2 is kept open, isolating the output terminal co + of the converter 107 from the output terminal 0+ of the charging circuit, and the switching of the switching switch or switches of the converter 107 is interrupted, stopping the transfer of electrical energy from the input terminals ci + and ci to the output terminals co + and co- of the converter.
    The inhibition period T-j_ n p is chosen to be greater than the relaxation period corresponding to the time for discharging the parasitic capacitance between the supply terminals s + and s- of the circuit 109. By way of example, the period T -j_ n p is between 10 and 1000 milliseconds, for example between 100 and 500 milliseconds, for example of the order of 300 milliseconds.
    If the overvoltage detected by the circuit 207 results from an untimely disconnection of the battery 101, without prior disconnection of the photovoltaic module 103, the prediction of the inhibition period T-j_ n p gives time to the parasitic output capacitances of the circuit 205 to discharge. At the end of the inhibition period T-j_ n p, the circuit 207 supplies, on its terminal si, a command to close the switch K2, and, on its terminal s2, a command signal to reactivation of the switching converter. However, the battery 101 no longer being present and the parasitic output capacities of the circuit 205 being discharged, the control circuit 109 of the switching converter is no longer supplied (voltage Vg substantially zero). Thus, the operation of the converter at
    B16650 - DD18218 cutting remains interrupted until the battery 101 is possibly reconnected.
    If the overvoltage detected by the circuit 207 results from another cause such as for example a lightning strike on the photovoltaic module, the operation of the charging circuit resumes normally after the inhibition period T-j_ n p , provided that the voltage Vg between terminals 0+ and O- of the recharging circuit has dropped below the threshold Vyjy at the end of the period Ty n p.
    Thus, the recharging circuit 205 of FIG. 3 is intrinsically protected against a possible disconnection of the battery, and its operation will not be permanently interrupted in the event of an overvoltage linked to a cause other than a disconnection of the battery.
    FIG. 4 is a more detailed electrical diagram illustrating an exemplary embodiment of the overvoltage detection circuit 207 and of the switch K2 of the recharging circuit 205 of FIG. 3.
    In this example, the switch K2 is an N-channel MOS transistor whose gate is connected to the output node if of the circuit 207 and whose conduction nodes (source and drain) are connected respectively to the output terminal co + of the
    converter 107 and to the thick headed of exit 0+ of the circuit of refill 205. Circuit 207 comprises a diode Zener ZI linked in series with resistance RI Between the bounds of output 0+ and 0-
    of the recharging circuit 205. More particularly, in this example, the Zener diode ZI has its cathode connected, for example connected to the node O +, and its anode connected, for example connected, to an intermediate node n2 of the circuit 207, and the resistance RI has a first end connected, for example connected to node n2 and a second end connected, for example connected, to terminal O-.
    The circuit 207 further comprises a voltage comparator 401 of which a positive input terminal (+) is connected to the
    B16650 - DD18218 node n2 and of which a negative input terminal (-) is connected to a node n3 of application of a reference potential. The supply terminals of comparator 401 are connected, for example connected, respectively to the output terminals 0+ and O- of the recharging circuit.
    In this example, the reference potential on node n3 is provided by a voltage divider bridge comprising a resistor R2 in series with a resistor R3 between the output terminals 0+ and 0- of the recharging circuit. More particularly, in this example, the resistor R2 has a first end connected, for example connected, to the node 0+, and a second end connected, for example connected, to the node n3, and the resistor R3 has a first end connected, by example connected, to node n3, and a second end connected, for example connected, to node 0-.
    In the example shown, the circuit 207 further comprises an optional circuit for stabilizing the voltage applied to the positive input terminal (+) of the comparator, comprising a resistor R4 connecting the node n2 to the positive input (+) of comparator 401, and a capacitor C3 connecting the positive input (+) of comparator 401 to terminal 0-.
    The circuit 207 further comprises a diode D2 whose anode is connected, for example connected, to the output of the comparator 401, and whose cathode is connected, for example connected, to an intermediate node n4 of the circuit 207.
    The circuit 207 further comprises a timing circuit comprising a capacitor C4 having a first electrode connected, for example connected, to the node n4 and a second electrode connected, for example connected, to the terminal O-, and, in parallel with the capacitor C4 , a resistor R5 having a first end connected, for example connected, to node n4, and a second end connected, for example connected, to terminal O-.
    In this example, the output node s2 is connected, for example connected, to the node n4.
    B16650 - DD18218
    The circuit 207 of FIG. 4 further comprises a circuit 403 for controlling the switch K2. The circuit 403 comprises a resistor R6 in series with an N-channel MOS transistor Ml between the terminals 0+ and O- of the recharging circuit. In the example shown, the resistor R6 has a first end connected, for example connected, to the terminal O +, and a second end connected, for example connected, to an intermediate node n5 of the circuit 403, and the transistor Ml has a first conduction node connected, for example connected, to node n5 and a second conduction node connected, for example connected, to terminal O-. The gate of transistor Ml is connected, for example connected, to node n4. The control circuit 403 further comprises a charge pump circuit 407 (not detailed) comprising supply nodes a + and a- connected, for example connected, respectively to terminals 0+ and O- of the recharging circuit, a node input n6 connected, for example connected, to node n5, and an output node n7 connected, for example connected to node si.
    The operation of the overvoltage detection circuit 207 of FIG. 4 will now be described. In this example, it is considered that the terminals co- and O- are connected to the same node for applying a reference potential, for example ground, with respect to which all the voltages of the circuit are defined.
    In steady state, when the voltage Vg between the terminals 0+ and O- of the recharging circuit is lower than the avalanche threshold V £] _ of the Zener diode Zl, the diode ZI is blocked and the voltage on the node n2 ( referenced with respect to terminal 0) is substantially zero. As a result, the output voltage of comparator 401 is in a low state (substantially zero). Thus, the voltage on node n4 is substantially zero. The signal s2 is therefore in a low state, interpreted by the control circuit 109 as a control state in the active state of the switching converter 107. The transistor M1 is in turn kept open, so that the voltage on the node n5 is at
    B16650 - DD18218 a high state (substantially equal to the voltage on node 0+), interpreted by the control circuit 407 as a control signal in the closed state of the switch K2. The circuit 407 thus applies to the node if a maintenance signal in the closed state of the transistor K2, that is to say a voltage greater than the source voltage of the transistor K2.
    When the voltage Vg between the terminals 0+ and O- of the recharging circuit exceeds the avalanche threshold V £] _ of the Zener diode Zl, the diode ZI enters into conduction, causing an increase in the voltage on the node n2. When the voltage on node n2 exceeds the voltage applied on node n3, the output voltage of comparator 401 goes high (substantially equal to the voltage on terminal 0+). This results in the rapid charging, via the diode D2, of the capacitor C4, marking the start of the inhibition period T inh of the switching converter. The capacitor C4 then discharges slowly via the resistor R5, the time constant R5xC4 fixing the duration of the period T-j_ n p. During the period Tj_ n p, the voltage on node n4 is at a high state. The signal s2 is therefore in a high state, interpreted by the control circuit 109 as a control state in the inactive state of the switching converter 107. The transistor Ml is in turn kept closed, so that the voltage on the node n5 is in a low state (substantially equal to the voltage on node O-), interpreted by the control circuit 407 as a control signal in the open state of the switch K2. The circuit 407 thus applies to the node if a maintenance signal in the open state of the transistor K2. It will be noted that in this example, the overvoltage threshold Vpp causing the opening of the switch K2 and the stopping of the switching converter is substantially equal to Vzi + Vref · For example, the value Vppp, fixed by the values of resistors R2 and R3, is between 0.1 and 1 V, for example of the order of 0.2 V.
    It will be noted that in the example in FIG. 4, the switch K2 is an N-channel MOS transistor. An advantage
    B16650 - DD18218 of such a switch is that it generates relatively low conduction losses compared to a P-channel MOS transistor. However, in return, its control is more complex to implement since it requires the application on its grid of a voltage greater than the voltage present on terminal 0+ of the recharging circuit (to maintain the switch K2 in the on state).
    As a variant, the switch K2 can be replaced by a P-channel MOS transistor, in which case the control circuit 403 can be omitted and the gate of the transistor K2 directly connected to the node n4.
    More generally, any other switch which can be controlled in the open state and in the closed state can be used to make the switch K2.
    Particular embodiments have been described. Various variants and modifications will appear to those skilled in the art. In particular, the embodiments described are not limited to the particular embodiment of the overvoltage detection circuit 207 described in relation to the figure
    4. More generally, the person skilled in the art will be able, from the functional indications of the present description, to provide other ways of making the circuit 207, in analog electronics and / or in digital electronics (for example by means of a microcontroller).
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1. Circuit (205) for recharging an electric battery (101) by means of a photovoltaic module (103), comprising:
    first (1+) and second (I-) input terminals intended to be connected respectively to first (M +) and second (M-) terminals of the photovoltaic module;
    first (0+) and second (O-) output terminals intended to be connected respectively to first (B +) and second (B-) terminals of the battery;
    a switching converter (107) comprising first (ci +) and second (ci-) input terminals connected respectively to the first (1+) and second (I-) input terminals of the charging circuit and of the first (co + ) and second (co-) output terminals connected respectively to the first (0+) and second (O-) output terminals of the charging circuit;
    a control circuit (109) of the switching converter (107), comprising first (s +) and second (s-) supply terminals connected respectively to the first (0+) and second (O-) output terminals of the circuit recharge;
    a protection switch (K2) connecting the first output terminal (co +) of the switching converter to the first output terminal (0+) of the charging circuit; and an overvoltage detection circuit (207) configured to, when the voltage between the first (0+) and second (0) output terminals of the charging circuit exceeds a threshold, command the opening of the protection switch ( K2) and stopping the switching converter (107) during a predetermined inhibition period.
    [2" id="c-fr-0002]
    2. charging circuit (205) according to claim 1, in which the overvoltage detection circuit (207) is further configured to, at the end of the inhibition period, order the closing of the protection switch (K2 ) and restarting the switching converter (107).
    B16650 - DD18218
    [3" id="c-fr-0003]
    3. charging circuit (205) according to claim 1 or 2, wherein the control circuit (109) is configured to control the switching converter (107) according to the voltage and / or the output current of the photovoltaic module. (103), measured on the first (1+) and / or second (I-) input terminals of the charging circuit.
    [4" id="c-fr-0004]
    4. charging circuit (205) according to claim 3, wherein the control circuit (109) is configured to automatically adapt the control of the switching converter (107) so as to maximize the output power of the photovoltaic module.
    [5" id="c-fr-0005]
    5. charging circuit (205) according to any one of claims 1 to 4, in which the overvoltage detection circuit (207) comprises a comparator (401) whose output is connected to a charging node (n4) d '' a timer circuit (C4, R5) via a diode (D2).
    [6" id="c-fr-0006]
    6. charging circuit (205) according to claim 5, in which the timing circuit comprises a first capacitor (C4) and a first resistor (R5) connected in parallel between the charging node (n4) of the timing circuit and the second output terminal (O-) of the charging circuit (205).
    [7" id="c-fr-0007]
    7. charging circuit (205) according to claim 5 or 6, wherein the overvoltage detection circuit (207) comprises a Zener diode (Zl) connected in series with a second resistor (RI) between the first (0+) and second (O-) output terminals of the recharging circuit, the comparator having a positive input terminal (+) connected to the midpoint between the Zener diode (Zl) and the second resistor (RI) and an input terminal negative connected to a node (n3) for applying a reference voltage.
    [8" id="c-fr-0008]
    8. charging circuit (205) according to claim 7, in which the overvoltage detection circuit (207) further comprises a resistive voltage divider bridge comprising a third resistor (R2) in series with a fourth resistor.
    B16650 - DD18218 (R3) between the first (0+) and second (O-) output terminals of the charging circuit (205), the node (n3) for applying the reference voltage being connected to the midpoint between the third (R2) and fourth (R3) resistors.
    [9" id="c-fr-0009]
    9. recharging circuit (205) according to any one of claims 5 to 8, in which the recharging node (n4) of the timing circuit is connected to a control terminal of the protection switch (K2), and to a control terminal of the control circuit (109) of the switching converter (107).
    [10" id="c-fr-0010]
    10. System comprising a photovoltaic module (103), an electric battery (101) and a recharging circuit (205) according to any one of claims 1 to 9, in which the first (1+) and second (I-) charging circuit input terminals are respectively connected to first (M +) and second (M-) terminals of the photovoltaic module, and in which the first (0+) and second (O-) output terminals of the charging circuit are connected respectively to first (B +) and second (B-) terminals of the battery.
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    同族专利:
    公开号 | 公开日
    FR3074619B1|2019-12-13|
    ES2811073T3|2021-03-10|
    EP3493357A1|2019-06-05|
    US20190173376A1|2019-06-06|
    US10715032B2|2020-07-14|
    EP3493357B1|2020-05-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20130257409A1|2012-03-27|2013-10-03|Fujitsu Semiconductor Limited|Control circuit for dc-dc converter, dc-dc converter, and control method of dc-dc converter|
    US20150263621A1|2014-03-12|2015-09-17|Samsung Electronics Co., Ltd.|Method and apparatus for controlling booster circuit and apparatus for extracting maximum power by using the same|
    EP3247014A1|2015-01-12|2017-11-22|LG Chem, Ltd.|Overvoltage protection circuit, control method therefor and battery pack|
    WO2015132625A1|2014-03-03|2015-09-11|Robert Bosch Pte. Ltd.|Topology and control strategy for hybrid storage systems|
    CN107231087B|2016-03-25|2021-07-02|通用电气公司|Range extender and circuit protection method|
    US10421561B2|2016-04-15|2019-09-24|Dpl Science Inc.|Power supply module for spacecraft|DE102016224639A1|2016-12-09|2018-06-14|Würth Elektronik eiSos Gmbh & Co. KG|Inverter device for energy production and power generator with such a converter device and use of such a converter device|
    CN110544934A|2019-09-05|2019-12-06|珠海格力电器股份有限公司|converter control method and device for improving response speed and converter equipment|
    CN112578834A|2019-09-29|2021-03-30|东莞东骅电子科技有限公司|Output voltage stabilizing circuit|
    JP6975768B2|2019-12-24|2021-12-01|本田技研工業株式会社|Voltage converter|
    法律状态:
    2018-12-31| PLFP| Fee payment|Year of fee payment: 2 |
    2019-06-07| PLSC| Search report ready|Effective date: 20190607 |
    2019-12-31| PLFP| Fee payment|Year of fee payment: 3 |
    2020-12-28| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1761509A|FR3074619B1|2017-12-01|2017-12-01|RECHARGE CIRCUIT OF AN ELECTRIC BATTERY BY MEANS OF A PHOTOVOLTAIC MODULE|
    FR1761509|2017-12-01|FR1761509A| FR3074619B1|2017-12-01|2017-12-01|RECHARGE CIRCUIT OF AN ELECTRIC BATTERY BY MEANS OF A PHOTOVOLTAIC MODULE|
    EP18207639.8A| EP3493357B1|2017-12-01|2018-11-21|Charging circuit of an electric battery by means of a photovoltaic module|
    ES18207639T| ES2811073T3|2017-12-01|2018-11-21|Recharging circuit of an electric battery by means of a photovoltaic module|
    US16/201,292| US10715032B2|2017-12-01|2018-11-27|Circuit for charging an electric battery by means of a photovoltaic module|
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