• 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:
    secondary battery pack having connector not designed here is described a secondary battery pack including a battery cell having a cathode terminal and an anode terminal formed on a surface including a sealed portion to seal the battery cell and a module of protection circuit (pcm) with a protection circuit board (pcb) having a protection circuit formed thereon, an external input and output terminal electrically connected to the protection circuit, a connector electrically connected to the input terminal and output, and an electrically insulating pcm box in which the pcb is mounted, in which the pcm is charged in the sealed portion in a state where the pcm is electrically connected to the battery cell and the connector is formed in the pcm of such so the connector does not protrude from the secondary battery pack.
    公开号:BR112015018229B1
    申请号:R112015018229-1
    申请日:2014-05-22
    公开日:2021-08-24
    发明作者:Tae Wook Kim；Hyung Ku Yun；Dong Cheol Lee；Ho Chol Nam
    申请人:Lg Chem, Ltd；
    IPC主号:
    专利说明:

    TECHNICAL FIELD
    [001] The present invention relates to a secondary battery pack including a non-projecting connector, and more particularly to a secondary battery pack including a battery cell having a cathode terminal and an anode terminal formed in a surface including a sealed portion for sealing the battery cell and a protection circuit module (PCM) including a protection circuit board (PCB) having a protection circuit formed thereon, an electrically connected external input and output terminal. to the protection circuit, a connector electrically connected to the external input and output terminal, and an electrically insulating PCM box in which the PCB is mounted, in which the PCM is charged in the sealed portion in a state where the PCM is electrically connected to the battery cell and the connector is formed on the PCM in such a way that the connector does not protrude from the secondary battery. PRIOR ART
    [002] As mobile devices have been increasingly developed, and the demand for these mobile devices has increased, the demand for secondary batteries has also increased sharply. Among such secondary batteries is a lithium secondary battery featuring a high energy density and operating voltage and excellent charge retention and service life characteristics, having been widely used as a power source for various electronic products as well as various types of mobile devices.
    [003] Depending on the types of devices in which secondary batteries are used, the secondary batteries can be configured to have a detachable type structure in which the secondary batteries can be easily inserted and removed from the devices or a built-in type structure in which secondary batteries are built into the devices. For example, secondary batteries used in conventional mobile devices can be configured with a detachable type frame where secondary batteries can be inserted or removed from the mobile devices as needed. On the other hand, secondary batteries used in other devices, such as some mobile phones, tablet personal computers (PCs), and smart minicomputers, can be configured to have a built-in type structure.
    [004] Among such secondary batteries is a lithium secondary battery, which is widely used. A secondary battery includes anode and cathode terminals electrically connected to a device in which the secondary battery is mounted and a safety element to effectively control an abnormal state of the secondary battery, such as secondary battery overload or secondary battery overcurrent. Examples of the safety element may include a positive temperature coefficient (PTC) element, and a protection circuit module (PCM).
    [005] In general, an embedded type secondary battery uses a plate-shaped battery cell, which is suitable for electrical connection, and a safety element, such as a PCM, is connected to a battery cell, including terminals anode and cathode through a conductive nickel plate by soldering or soldering. The anode and cathode terminals contact anode and cathode terminal parts of the PCM in such a way that the anode and cathode terminals are electrically connected to an external input and output terminal formed on the PCM. A connector is electrically connected to the external input and output terminal.
    [006] In a conventional secondary battery pack, the connector is connected to a device in a state where the connector protrudes outward from the battery pack. For this reason, it is necessary to provide the interior of the device with an additional space in which the connector is to be located, although a space necessary to form the connector is present in the battery pack.
    [007] In addition, an expensive flexible board is used to interconnect the connector projecting outward from the battery and the PCM. As a result, the manufacturing cost is increased.
    [008] Therefore, there is a heightened need for a secondary battery pack, from which a projecting connector is removed to improve spatial efficiency and to reduce manufacturing cost. DISCLOSURE TECHNICAL PROBLEM
    [009] Therefore, the present invention was made to solve the above problems, and other technical problems that have yet to be solved.
    [0010] Specifically, it is an object of the present invention to provide a secondary battery pack configured to have a structure in which a connector is formed on a protection circuit module (PCM) such that the connector does not protrude out of the from the secondary battery pack, thus preventing the generation of a dead space in a device, on which the secondary battery pack is mounted, due to the connector and reducing the manufacturing cost. TECHNICAL SOLUTION
    [0011] According to one aspect of the present invention, the above and other objects may be achieved by the provision of a secondary battery pack including a battery cell having a cathode terminal and an anode terminal formed on a surface including a portion. sealed to seal the battery cell and a protection circuit module (PCM) with a protection circuit board (PCB) having a protection circuit formed therein, an external input and output terminal electrically connected to the protection circuit , a connector electrically connected to the external input and output terminal, and an electrically insulating PCM box in which the PCB is mounted, in which the PCM is charged in the sealed portion in a state where the PCM is electrically connected to the battery and connector is formed on the PCM in such a way that the connector does not protrude out of the secondary battery pack.
    [0012] As described above, the secondary battery pack according to the present invention is configured to have a structure in which the connector is formed in the PCM such that the connector does not protrude out from the battery pack. Therefore, it is possible to minimize a defined space in a device, in which the connector will be mounted. Also, a flexible board extending between the PCM and the connector is removed. Therefore, it is possible to reduce the manufacturing cost.
    [0013] In a preferred example, the cathode terminal and the anode terminal of the battery cell can be electrically connected to the printed circuit board and the external input and output terminal can be formed on the PCB such that the terminal External input and output is electrically connected to the cathode terminal and the anode terminal of the battery cell.
    [0014] For example, the connector can be directly coupled to the external input and output terminal without the use of an additional member, thereby achieving the electrical connection from the cathode terminal and the anode terminal of the battery cell to the connector through the PCB and the external input and output terminal.
    [0015] Unlike the structure in which the connector is directly coupled to the outer input and output terminal, as described above, an electrical connection member can be interposed between the outer input and output terminal and the connector to achieve electrical connection between the external input and output terminal and the connector.
    [0016] In this case, the electrical connection member may be a flexible printed circuit board (FPCB). However, the present invention is not limited to this. Even in this case, the connector is arranged on the PCM in such a way that the connector does not protrude out from the secondary battery pack. Therefore, this structure is differentiated from a conventional structure.
    [0017] In a concrete example, the PCM box can be provided with an opening, through which the connector is exposed to the outside.
    [0018] Specifically, the PCM box may include a first box member and a second box member coupled together while surrounding the PCB.
    [0019] The second box member can be configured to have an open box structure on one of its surfaces so that the PCM is inserted and mounted on the second box member and the first box member can be provided in one of its sides with an opening, through which the connector is exposed.
    [0020] In a concrete example, the PCB can be provided on one surface thereof with the external input and output terminal and on the other of its surfaces with an anode terminal connection part and a terminal connection part of cathode corresponding to the anode terminal and the cathode terminal, respectively.
    [0021] A nickel plate can be further mounted on a top of the cathode lead to be coupled to the cathode lead connection part by ultrasonic welding.
    [0022] A safety element can be further mounted in an electrical connection region between one of the battery cell electrode terminals and the PCB.
    [0023] Specifically, the safety element can be a positive temperature coefficient (PTC) element or a fuse. However, the present invention is not limited to this.
    [0024] The secondary battery according to the present invention can be configured to have a structure in which a label is connected to the battery cell and the PCM excluding the connector in an enveloping fashion.
    [0025] Specifically, the label may be configured to have a structure that is capable of enclosing a thermally bonded outer circumferential surface of the battery cell and the PCM excluding the connector.
    [0026] The battery cell may be a secondary battery having an electrode assembly of a cathode / separator / anode structure received in a battery box made of a laminated sheet comprising a metal layer and a resin layer on a sealed state.
    [0027] According to another aspect of the present invention, there is provided a protection circuit module (PCM) mounted on a sealed portion of a plate-shaped battery cell having a cathode terminal and an anode terminal, each of which is made of a plate-shaped conductive member formed at an upper end thereof, the PCM including a PCB having a protection circuit formed therein, an external input and output terminal electrically connected to the protection circuit, a connector electrically connected to the external input and output terminal, and an electrically insulating PCM box in which the PCB is mounted, in which the printed circuit board is electrically connected to the cathode terminal and the anode terminal of the battery cell and the connector is mounted on the external input and output terminal in such a way that the connector does not protrude out from the PCM box.
    [0028] The connector can be directly coupled to the external input and output terminal. According to the circumstances, an electrical connection member can be interposed between the outer input and output terminal and the connector to achieve electrical connection between the outer input and output terminal and the connector.
    [0029] The PCM box can be provided with an opening, through which the connector is exposed to the outside.
    [0030] According to another aspect of the present invention, a device including the secondary battery pack of the aforementioned construction is provided.
    [0031] Examples of the device may include a mobile phone, a laptop computer, a smart phone, a tablet PC, a smart minicomputer, and a netbook computer. The structures and fabrication methods of the devices are well known in the art to which the present invention belongs and therefore a detailed description will be omitted. BRIEF DESCRIPTION OF THE DRAWINGS
    [0032] The above and other objectives, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
    [0033] Figure 1 is a perspective view showing a secondary battery pack according to an embodiment of the present invention;
    [0034] Figure 2 is an exploded view of the secondary battery pack shown in Figure 1;
    [0035] Figure 3 is a perspective view showing a battery cell according to an embodiment of the present invention;
    [0036] Figure 4 is a perspective view showing a protection circuit board (PCB), an external input and output terminal, and a connector according to an embodiment of the present invention;
    [0037] Figure 5 is a perspective view showing a protection circuit module (PCM) according to an embodiment of the present invention; and
    [0038] Figure 6 is a perspective view showing the secondary battery pack of Figure 1, from which the label is removed. BEST WAY
    [0039] Now, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted, however, that the scope of the present invention is not limited by the illustrated embodiments.
    [0040] Figure 1 is a perspective view typically showing a secondary battery pack 10 according to an embodiment of the present invention and Figure 2 is an exploded view generally showing the secondary battery pack 10 of Figure 1.
    [0041] Referring to Figures 1 and 2, the secondary battery pack 10 includes a battery cell 100 and a protection circuit module (PCM) 500 including a protection circuit board (PCB) 200, a PCM box 310 and 320, and a connector 400. The secondary battery pack 10 is configured to have a structure in which a label 600 is attached to the battery cell 100 and the PCM 500 excluding connector 400 in a wraparound shape and connector 400 is exposed through an opening 311 of the first box member 310 such that the connector 400 does not protrude out of the secondary battery pack 10.
    [0042] Figure 3 is a perspective view typically showing a battery cell according to an embodiment of the present invention, Figure 4 is a perspective view typically showing a PCB, an external input and output terminal, and a connector in accordance with an embodiment of the present invention, Figure 5 is a perspective view generally showing a PCM in accordance with an embodiment of the present invention, and Figure 6 is a perspective view generally showing the battery pack of Figure 1, from which the label is removed.
    [0043] Referring to Figures 3 to 6 in conjunction with Figure 2, a sealed portion 110 and a cathode terminal 120 and an anode terminal 130 are formed at the upper end of the battery cell 100. A terminal connection portion of cathode 220 and an anode terminal connecting portion 230, respectively, corresponding to the cathode terminal 120 and the anode terminal 130 are formed on top of the printed circuit board 200.
    [0044] The cathode terminal 120 and the anode terminal 130 contact the cathode terminal connecting part 220 and the anode terminal connecting part 230, respectively, thereby achieving the electrical connection between the battery cell 100 and the PCB 200. A safety element (not shown) is further mounted between the anode terminal 130 and the anode terminal connecting part 230.
    [0045] In addition, the cathode terminal connecting part 220 and the anode terminal connecting part 230 are electrically connected to an outer input and output terminal 210. The connector 400 is mounted on top of the input terminal and external output 210, thereby achieving electrical connection between them. An electrical connection member (not shown) may be interposed between connector 400 and outer input and output terminal 210.
    [0046] The PCM 500 is configured to have a structure in which the printed circuit board 200 is mounted on the second box member 320, and the first box member 310 is coupled to the top of the second box member 320. 311 is formed on the right side of the first box member 310. The connector 400 is exposed through the opening 311 of the first member 310. The PCM 500 is loaded in the sealed portion of the battery cell 100.
    [0047] While exemplary embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible without departing from the scope and spirit of the invention as disclosed in the appended claims. INDUSTRIAL APPLICABILITY
    [0048] As is apparent from the above description, a secondary battery pack according to the present invention is configured to have a structure in which a connector is formed on a protection circuit module (PCM), such that the connector does not protrude from the battery pack. Therefore, it is possible to minimize a defined space in a device, in which the connector will be mounted. Also, a flexible board extending between the PCM and the connector is removed. Therefore, it is possible to reduce the manufacturing cost.
    权利要求:
    Claims (9)
    [0001]
    1. Secondary battery pack (10) characterized in that it comprises: a battery cell (100) having a cathode terminal (120) and an anode terminal (130) formed on a surface including a sealed portion (110) to seal the battery cell (100); and a protection circuit module (PCM) (500) comprising a protection circuit board (PCB) (200) having a protection circuit formed therein, an external input and output terminal (210) electrically connected to the circuit. protection, a connector (400) electrically connected to the external input and output terminal (210), and an electrically insulating PCM box in which the PCB (200) is mounted, in which the PCM (500) is loaded in the sealed portion ( 110) in a state where the PCM (500) is electrically connected to the battery cell (100), and the connector (400) is formed on the PCM (500) such that the connector (400) does not protrude out of the secondary battery pack (10), the external input and output terminal (210) is formed on the PCB (200), the connector (400) is directly coupled to the external input and output terminal (210), a part of cathode terminal connection (220) and an anode terminal connection part (230) respectively corresponding to the cathode terminator (120) and the anode terminal (130) are formed on top of the PCB (200), and are electrically connected to the external input and output terminal (210), the PCM housing comprises a first housing member (310 ) and a second box member (320), the first box member (310) is provided on one of its sides with an opening (311), through which the connector (400) is exposed outwardly, and the first box member (310). housing (310) is coupled to the top of the second housing member (320) while around the PCB (200).
    [0002]
    2. Secondary battery pack (10) according to claim 1, characterized in that the battery cell (100) is a secondary battery having an electrode assembly of a cathode / separator / anode structure received in a battery box made of a laminated sheet comprising a metal layer and a resin layer in a sealed state.
    [0003]
    3. Secondary battery pack (10) according to claim 1, characterized in that the PCB (200) is provided on one of its surfaces with the external input and output terminal (210) and on the other of the their surfaces with an anode terminal connecting part (230) and a cathode terminal connecting part (220) corresponding to the anode terminal (130) and the cathode terminal (120), respectively.
    [0004]
    4. Secondary battery pack (10) according to claim 3, characterized in that a nickel plate is further mounted on a top of the cathode terminal (120) to be coupled to the cathode terminal connecting part (220) by means of ultrasonic welding.
    [0005]
    5. Secondary battery pack (10) according to claim 1, characterized in that a safety element is additionally mounted in an electrical connection region between one of the battery cell electrode terminals (100) and the PCB (200).
    [0006]
    6. Secondary battery pack (10) according to claim 5, characterized in that the safety element is a positive temperature coefficient element (PTC) or a fuse.
    [0007]
    7. Secondary battery pack (10) according to claim 1, characterized in that a label (600) is attached to the battery cell (100) and the PCM (500) excluding the connector (400) in a immersive way.
    [0008]
    8. Secondary battery pack (10) according to claim 7, characterized in that the label (600) is configured to have a structure capable of enclosing a thermally bonded outer circumferential surface of the battery cell (100) and the PCM (500) excluding the connector (400).
    [0009]
    9. Device characterized in that it comprises a secondary battery pack (10) as defined in claim 1.
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    法律状态:
    2018-11-06| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-06-23| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-07-27| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-08-24| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 22/05/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    KR10-2013-0058099|2013-05-23|
    KR1020130058099A|KR101671371B1|2013-05-23|2013-05-23|Secondary Battery Pack Having Non-Protruded Connector|
    PCT/KR2014/004563|WO2014189299A1|2013-05-23|2014-05-22|Secondary battery pack containing connector with non-projecting structure|
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