• 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:
    A plate heat exchanger (4) comprises a first and a second plate (8, 14) joined in liquid-tight manner by their peripheral edges. The first plate (8) is embossed so as to form a plurality of channels (10) separated by ribs (11) in relief. The plate heat exchanger (4) comprises a fluidic connection interface (5) with heat transfer fluid inlet (6) and outlet (7) pipes. The ribs (11) have protuberances (12) spaced along the entire length of the rib (11) and act as turbulators. The protuberances (12) project over only a portion of the width of the channel (10) adjacent to the rib (11), and thereby reduce the width of the channel (10).
    公开号:FR3060725A1
    申请号:FR1662473
    申请日:2016-12-15
    公开日:2018-06-22
    发明作者:David Basle；Herve Bourgeais
    申请人:Valeo Systemes Thermiques SAS；
    IPC主号:
    专利说明:

    Holder (s): VALEO THERMAL SYSTEMS Simplified joint-stock company.
    Extension request (s)
    Agent (s): VALEO SYSTEMES THERMIQUESTHS.
    PLATE HEAT EXCHANGER, ENERGY STORAGE DEVICE AND MANUFACTURING METHOD THEREOF.
    FR 3 060 725 - A1 _ A plate heat exchanger (4) comprises first and second plates (8, 14) joined in a liquid-tight manner by their peripheral edges. The first plate (8) is stamped so as to form a plurality of channels (10) separated by ribs (11) in relief. The plate heat exchanger (4) comprises an interface for fluid connection (5) to inlet pipes (6) and outlet pipes (7) of heat transfer fluid. The ribs (11) have protuberances (12) spaced along the entire length of the rib (11) and which act as a turbulator. The protrusions (12) extend over only part of the width of the channel (10) adjacent to the rib (11), and thus reduce the width of the channel (10).

    The invention relates to the field of plate heat exchangers, energy storage devices and methods of manufacturing such heat exchangers. with plates, in particular for cooling batteries for hybrid vehicles or electric vehicles.
    More specifically, the invention relates to the field of plate heat exchangers.
    One of the critical points in the design of such exchangers concerns the aging of the batteries when they are subject to excessively high temperatures. In fact, an improperly controlled temperature can lead to lasting damage to the batteries.
    Already known plate heat exchangers provided with channels. These channels, where a heat transfer fluid circulates, make it possible to take calories from the batteries and to restore them away from the heat exchanger. However, the fluid circulating inside these channels has a laminar movement. As a result, heat builds up at the boundary layer of the fluid, making it impossible to obtain a uniform temperature inside the battery cooler.
    In order to promote heat exchange inside the battery coolers, we began to develop plate heat exchangers with channels comprising turbulators.
    We know such types of heat exchanger, for example in document KR 20140138412. Such turbulators are intended to disturb the flow of fluid by creating turbulence inside the channels, thus promoting separation of the boundary layer of the fluid inside the channels, which leads to a better homogeneity of the temperature of the fluid and therefore a more efficient cooling of the batteries.
    [007] However, this solution is not perfect. Indeed, the turbulators of the document mentioned above are stamped on the bottom of the channels, thereby reducing the exchange surface between the fluid and the battery disposed in contact with this plate.
    In order to meet these combined constraints, a plate heat exchanger is proposed here comprising first and second plates joined in a liquid-tight manner by their peripheral edges, the first plate being stamped so as to form a plurality channels separated by raised ribs, the heat exchanger comprising an interface for fluid connection to pipes for the inlet and outlet of heat-transfer fluid, characterized in that said ribs have protuberances spaced apart over the entire length of the rib and acting as a turbulator, said protrusions extending over only part of the width of the channel adjacent to the rib, thereby reducing the width of the channel.
    The arrangement of the turbulators on the ribs delimiting the channels and the limitation of the number of turbulators present on the bottom of the channel allow an optimization of the exchange surface between the battery cooler and the battery, in addition to an improvement of the heat exchange thanks to the disturbances generated in the flow of the fluid within the plate heat exchanger.
    According to one embodiment, a channel is defined by a rib comprising protuberances and a rib not comprising protuberances.
    According to one embodiment, a channel is defined by two ribs comprising protuberances.
    According to one embodiment, the protuberances are staggered along a rib.
    According to one embodiment, the protrusions are perforated in their center.
    In one embodiment, the peripheral edges of the first plate include protuberances.
    According to one embodiment, the bottom of a channel comprises protuberances.
    According to one embodiment, the outer surface of the second plate is planar.
    The present invention also relates to an energy storage device with battery cooler, comprising a battery and such a plate heat exchanger.
    According to one embodiment, the energy storage device with battery cooler comprises two batteries.
    The present invention also relates to a method for manufacturing a plate exchanger which comprises joining a first and a second plate in a liquid-tight manner by their peripheral edges, stamping the first plate. so as to form a plurality of channels separated by raised ribs, the plate heat exchanger comprising an interface for fluid connection to pipes for the inlet and outlet of heat transfer fluid, characterized in that said ribs have spaced protuberances over the entire length of the rib and acting as a turbulator, said protrusions extending over only part of the width of the channel adjacent to the rib, thereby reducing the width of the channel.
    We will now briefly describe the figures of the drawings.
    [021] Figure 1 is a schematic view showing an electrical energy storage device with battery cooler.
    [022] Figures 2a and 2b are respectively top views of the outer and inner surface of the first plate according to one embodiment.
    [023] Figures 3a and 3b are respectively top views of the outer and inner surface of the second plate.
    [024] Figures 4a and 4b are perspective views respectively comprising cross sections of a channel of the plate heat exchanger at one and away from a protuberance.
    FIG. 5 is an enlarged section of a protuberance when the first and second plates are assembled.
    [026] Below is a detailed description of several embodiments of the invention with examples and with reference to the drawings.
    [027] The invention relates to an electrical energy storage device 1 with battery cooler, an example of which is visible in FIG. 1. According to a first embodiment, an energy storage device comprises two batteries 2, 3 suitable for storing electrical energy as well as a plate heat exchanger 4 suitable for cooling the batteries. In the example presented, the plate heat exchanger 4 is arranged between the two batteries 2, 3.
    [028] The plate heat exchanger 4 has a thin shape and has two main exterior surfaces 8b, 14b. As can be seen in FIG. 1, the two batteries 2, 3 are each placed in direct contact with one of the two exterior surfaces 8b, 14b of the plate heat exchanger 4. This arrangement allows direct heat exchange by conduction between the plate heat exchanger 4 and the two batteries 2, 3.
    [029] The plate heat exchanger 4 may include a fluid connection interface 5 to inlet pipes 6 and outlet pipes 7 for heat transfer fluid connected to fluid lines. This fluid connection interface 5 is advantageously located at one of the corners of the plate heat exchanger 4, the inlet pipes 6 and outlet pipes 7 of heat transfer fluid can for example be adjacent to each other and perpendicular to the outer surfaces 8b, 14b of the plate heat exchanger 4 in contact with the batteries 2, 3. This fluid connection interface 5 will make it possible to supply the plate heat exchanger 4 with fluid. The inlet 6 and outlet 7 heat transfer fluid pipes are assembled to the plate heat exchanger 4 in leaktight manner, in order to avoid any leakage. A cold heat transfer fluid can for example be introduced into the plate heat exchanger 4 by means of the inlet pipe 6, and come out hot through the outlet pipe 7 of fluid at the end of its passage inside the plate heat exchanger 4. Such a flow inside the plate heat exchanger 4 allows a heat exchange by conduction and convection between the plate heat exchanger 4 and the two batteries 2, 3, favoring thus cooling the batteries 2, 3.
    The plate heat exchanger 4 comprises two plates 8, 14 joined in a liquid-tight manner. Referring more particularly to Figures 2a and 2b respectively illustrating an inner surface 8a and an outer surface 8b of a first plate 8. The first plate 8 is for example of generally rectangular shape. One can also provide a protrusion 9 relative to this generally rectangular shape. The fluid connection interface 5 can for example be located at this protuberance 9.
    [031] The inner surface 8a of the first plate 8 comprises a plurality of channels 10 delimited by ribs 11 in relief. Channels 10 are parallel to each other. The channels 10 are also parallel to the peripheral edges of the first plate 8. An outermost channel extends from the inlet pipe 6 of heat transfer fluid along the peripheral edge adjacent to the inlet pipe 6 defining the largest length of the first plate 8. This channel 10 makes a turn along the peripheral edge defining the width of the first plate 8. This channel 10 makes a second turn to follow the peripheral edge of the first plate 8 defining the shortest length the first plate 8. This channel 10 makes a third bend to reach the level of the outlet pipe 7 of heat transfer fluid. The other channels 10 follow a similar geometry, being adjacent to each other progressing radially towards the center of the plate 8. The channels 10 meet at the outlet pipe 7.
    The channels 10 advantageously have the same width. The channels 10 closest to the peripheral edges of the first plate 8 have a greater total length than the channels 10 furthest from the peripheral edges of the first plate 8. The peripheral edges of the first plate 8 are also in relief. They delimit one side of the channel 10 closest to the peripheral edges. A central rib 13 can extend from the fluid connection interface 5. The central rib 13 separates the inlet area of the heat transfer fluid from the outlet area of the heat transfer fluid. The central rib 13 can also serve to delimit the channel 10 furthest from the peripheral edges of the first plate 8.
    More specifically, the two ribs 11 in relief separating a channel 10 from the first plate 8 may have protuberances 12 spaced along the ribs 11. These protrusions 12 may for example be arranged in staggered rows along the ribs 11. In the example presented in FIG. 2a, the protrusions project symmetrically with respect to the axis formed by the rib 11 on only part of the channels 10 delimited by a rib 11. As visible in FIG. 4b, the width of the rib 11 increases with level of the protuberance 12, the width of the channel 10 thus being reduced at the level of the protuberance 12 present on the rib 11 delimiting the channel 10. In a particular example, protuberances 12 can be provided on only one of the two ribs 11 delimiting a channel 10. The protrusions 12 are generally conical in shape, as can be seen in FIG. 2a. Preferably, they are perforated in their center.
    [034] The fluid flowing in the channels 10 flows around these protuberances 12. The movement thus imposed on the fluid makes it possible to form turbulent flows near the protrusions 12. This promotes heat exchange within the exchanger. plate heat 4 because the turbulent fluid flow zones will allow a homogeneous distribution of the calories transported by the fluid.
    According to one example, other protrusions 16 may for example be present on the bottom of the channel 10, favoring the appearance of a turbulent flow inside the channel 10. Such protrusions 16 may for example be present at the entrance to the multitude of channels 10 in order to impose a turbulent movement on the incoming fluid, or for example at the elbow formed by the channels 10 or even for example at the level of the fluid outlet zone. These particular protrusions 16 may be convex in shape, decreasing, orthogonally to the general plane of the plate heat exchanger, the cross section of the fluid in the channels 10. In another example, the peripheral edges of the first plate 8 include also protrusions 12. As visible in FIG. 4b, these protrusions 12 are of generally conical shape.
    As visible in FIG. 2b, the external surface 8b of the first plate 8 reproduces the shape of the channels 10. The exchange surface between the battery 2 and the external surface 8b of the first plate 8 is the bottom of the channels 10. Thus, the presence of protrusions 12 on the ribs 11 does not significantly reduce the contact surface between the battery 2 and the exterior surface 8b of the first plate 8.
    [037] Figures 3a and 3b respectively illustrate an inner surface 14a and the outer surface 14b of the second plate 14 constituting the plate heat exchanger 4. The second plate 14 has the same dimensions and the same shape as the first plate 8. According to one embodiment, the outer surface 14b of the first plate 14 is planar. The inner surface 14a may have pins 17. These pins 17 are located opposite the protrusions 12 of the first plate 8 when the heat exchanger 4 in the assembly position. After assembly of the first plate 8 and the second plate 14, the pins 17 present on the internal surface 14a are crimped through the holes 18 of the protrusions 12.
    [038] The two plates 8, 14 forming the plate heat exchanger 4 are made of metal. The channels 10 are formed on the first plate 8 by a stamping process. The protrusions 12 are created from this same process. In practice, the shape of the plate is generated by stamping. The stamping is done in several passes for example in a tool to follow or on a transfer press. Therefore, the first plate 8 is made in one piece, just as the second plate 14 is made in one piece. As shown in Figures 2a to 3b, the first and second plates 8, 14 each include for example six fins 15 pierced in their center. Four of these fins 15 are arranged for example symmetrically on the longer peripheral edges of the two plates 8, 14, and two of these fins 15 can be arranged symmetrically on the two shorter peripheral edges of the two plates 8, 14 These fins 15 will allow the two plates 8, 14 to be assembled one against the other, their inner surfaces 8a, 14a facing each other.
    [039] The two plates 8, 14 can also be joined by a brazing process by their peripheral edges. As visible in FIG. 5, the presence of protrusions 12 on the ribs 11 of the first plate 8 will make it possible to initiate the soldering, the pins 17 set in the protrusions 12 with holes serving as a contact point for soldering between the two plates 8, 14. A brazing metal is plated on the interior surfaces 8a and 14a of the two plates 8, 14 The mechanical connection obtained by this double means of joining the two plates 8, 14 allows mechanical strength between the two plates and improves the resistance of the plate heat exchanger 4 to pressure, limiting its deformation in the long term.
    An example of the use of a plate exchanger 4 according to this invention is given below.
    [041] The heat transfer fluid is introduced by means of the inlet pipe 6 of the fluid connection interface 5 between the plate heat exchanger 4 and the fluid lines outside the system (not shown). The fluid then separates in the multitude of channels 10 formed by the ribs 11 in relief. The protrusions 12 present along the ribs 11 will make it possible to reduce the width of the section for the passage of the fluid along the channels 10, thus promoting an increase in the heat exchange coefficient thanks to a homogenization of the calories carried by the heat transfer fluid. along the channels 10, as can be seen in FIG. 4a. The protrusions 12 and 16 present respectively along the peripheral edges and on the bottom of the channels 10 of the first plate 8 will also make it possible to promote the appearance of zones of turbulent flow. The turbulent flows created by the protrusions 12 and 16 within the plate heat exchanger 4 will allow the separation of the boundary layer of the fluid in each of the channels 10, thus avoiding the accumulation of heat at the boundary layer . The fluid flows in this way to the fluid outlet pipe 7. Advantageously, a heat transfer fluid circulates continuously within the plate heat exchanger 4 in order to constantly regulate the temperature of the batteries 2, 3 forming part of the energy storage device 1.
    [042] Of course, the present invention is not limited to the embodiments described above by way of examples; it extends to other variants. For example, the energy storage device 1 only comprises a battery 2 or 3, attached to the external surface 14b of the second plate 14.
    References :
    energy storage device battery 2 battery 3 plate heat exchanger 4 Fluid connection interface 5 Inlet pipe 6
    Outlet pipe 7 First plate 8
    Outgrowth 9 Channel 10 Rib 11 Protrusion 12 Central rib 13
    Second plate 14 Fin 15 Turbulators 16 Picot 17
    权利要求:
    Claims (11)
    [1" id="c-fr-0001]
    Claims
    1. Plate heat exchanger (4) comprising first and second plates (8, 14) joined in a liquid-tight manner by their peripheral edges, the first plate (8) being stamped so as to form a plurality of channels ( 10) separated by raised ribs (11), the plate heat exchanger (4) comprising an interface for fluid connection (5) to inlet pipes (6) and outlet pipes (7) of heat transfer fluid,
    Characterized in that
    Said ribs (11) have protuberances (12) spaced along the entire length of the rib (11) and acting as a turbulator, said protuberances (12) extending over only part of the width of the channel (10) adjacent to the rib (11), thereby reducing the width of the channel (10).
    [2" id="c-fr-0002]
    2. Plate heat exchanger (4) according to claim 1, wherein a channel (10) is defined by two ribs (11) comprising protrusions (12).
    [3" id="c-fr-0003]
    3. Plate heat exchanger (4) according to claim 2, wherein the protrusions (12) are arranged in staggered rows along a rib (11).
    [4" id="c-fr-0004]
    4. Plate heat exchanger (4) according to claims 1 to 3, wherein the peripheral edges of the first plate (8) comprise protrusions (12).
    [5" id="c-fr-0005]
    5. Plate heat exchanger (4) according to claims 1 to 4, wherein the protrusions (12) are perforated in their center.
    [6" id="c-fr-0006]
    6. Plate heat exchanger (4) according to claims 1 to 5, wherein the bottom of the channel (10) comprises protrusions (16).
    [7" id="c-fr-0007]
    7. Plate heat exchanger (4) according to claims 1 to 6 wherein the outer surface (14b) of the second plate (14) is planar.
    [8" id="c-fr-0008]
    8. Plate heat exchanger (4) according to claims 1 to 7 wherein the inner surface (14a) of the second plate (14) has pins (17).
    [9" id="c-fr-0009]
    9. An electrical energy storage device (1) with battery cooler, comprising a battery (2 or 3) and a plate heat exchanger (4) according to claims 1 to 8.
    [10" id="c-fr-0010]
    10. An electrical energy storage device (1) with battery cooler according to claim 1, comprising two batteries (2, 3) arranged on either side of the plate heat exchanger (4).
    [11" id="c-fr-0011]
    11. Method for manufacturing a plate heat exchanger (4) which comprises:
    - stamping a first plate (8) so as to form a plurality of channels (10) separated by ribs (11) in relief,
    - the junction of said first plate (8) and a second plate (14) in a liquid-tight manner by their peripheral edges, the plate heat exchanger (4) comprising a fluid connection interface (5) to inlet pipes (6) and outlet pipes (7) for heat transfer fluid, characterized in that, when the first plate (8) is stamped, protrusions (12) are formed spaced along the entire length of the rib (11) and acting as a turbulator, said protrusions (12) projecting over only part of the width of the channel (10) adjacent to the rib, thereby reducing the width of the channel (10).
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    类似技术:
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    FR3112847A1|2022-01-28|Device for thermal regulation, in particular for cooling, for a motor vehicle
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    同族专利:
    公开号 | 公开日
    WO2018109368A1|2018-06-21|
    FR3060725B1|2020-09-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP1271085A2|2001-06-23|2003-01-02|Behr GmbH & Co.|Device for cooling vehicle equipment, more particularly battery or fuel cell|
    US20090258289A1|2008-04-09|2009-10-15|Gm Global Technology Operations, Inc.|Battery cooling plate design with discrete channels|
    FR2989841A1|2012-04-19|2013-10-25|Valeo Systemes Thermiques|THERMAL CONTROL DEVICE FOR BATTERY MODULE.|WO2020193362A1|2019-03-25|2020-10-01|Reinz-Dichtungs-Gmbh|Temperature control plate having a microstructured fluid channel, in particular for motor vehicles|KR20140138412A|2013-05-23|2014-12-04|한국델파이주식회사|Battery cooling apparatus in electric vehicle|CN113571796A|2020-04-29|2021-10-29|比亚迪股份有限公司|Temperature control assembly and battery pack|
    CN113571795A|2020-04-29|2021-10-29|比亚迪股份有限公司|Temperature control assembly and battery pack|
    法律状态:
    2018-01-02| PLFP| Fee payment|Year of fee payment: 2 |
    2018-06-22| PLSC| Publication of the preliminary search report|Effective date: 20180622 |
    2019-12-31| PLFP| Fee payment|Year of fee payment: 4 |
    2020-12-31| PLFP| Fee payment|Year of fee payment: 5 |
    2021-12-31| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1662473A|FR3060725B1|2016-12-15|2016-12-15|PLATE HEAT EXCHANGER, ENERGY STORAGE DEVICE AND THEIR MANUFACTURING PROCESS|
    FR1662473|2016-12-15|FR1662473A| FR3060725B1|2016-12-15|2016-12-15|PLATE HEAT EXCHANGER, ENERGY STORAGE DEVICE AND THEIR MANUFACTURING PROCESS|
    PCT/FR2017/053526| WO2018109368A1|2016-12-15|2017-12-12|Plate heat exchanger, energy storage device and process for the manufacture thereof|
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