Battery module and battery pack

Abstract

The utility model provides a battery module and a battery pack, the battery module comprises a battery monomer, a heat conduction connecting piece and a circuit board, and the battery monomer comprises a battery monomer top cover; the heat conduction connecting piece comprises a first connecting part, a second connecting part and a bending part for connecting the first connecting part and the second connecting part, the bending part is downwards bent from the joint of the bending part and the second connecting part, the first connecting part is arranged on the battery monomer top cover in a pressing manner, and the second connecting part is in heat conduction connection with the temperature sensing piece; and part of the circuit board is arranged on one side, far away from the battery monomer top cover, of the second connecting part and is connected with the temperature sensing piece. Therefore, the temperature of the top cover of the single battery can be directly collected through the heat conduction connecting piece, the temperature of the single battery can be more truly represented, the temperature transmission path is short, the temperature transmission response is fast, the temperature loss is small, and the temperature measurement of the single battery is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery module and a battery pack. Background Art

[0002] When it comes to the safety of energy storage batteries and power batteries, it is crucial to collect battery temperature. By effectively detecting battery temperature changes, it is possible to prevent severe attenuation of battery energy and power caused by thermal runaway in advance, thereby ensuring the safety and stability of energy storage batteries and power batteries.

[0003] In the related art, the temperature of the battery cell is usually reflected by collecting the temperature of the busbar. However, due to its own internal resistance and the internal resistance of the battery cell pole welding, the busbar will generate a lot of heat, which will affect the actual temperature collected. Once the temperature is too high, the battery will be restricted. Utility Model Content

[0004] The purpose of this application is to provide a battery module and a battery pack to solve the technical problem of inaccurate temperature collection of battery cells by temperature collection components in the prior art. The preferred technical solutions among the many technical solutions provided in this application can produce many technical effects as described below.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] In a first aspect, the present application provides a battery module, comprising: a battery cell, a thermally conductive connector and a circuit board, the battery cell comprising a battery cell top cover; the thermally conductive connector comprising a first connecting portion, a second connecting portion and a bending portion connecting the first connecting portion and the second connecting portion, the bending portion being bent downward from a connection with the second connecting portion, the first connecting portion being pressed against the battery cell top cover, and the second connecting portion being thermally connected to a temperature sensor; a portion of the circuit board being arranged on a side of the second connecting portion away from the battery cell top cover, and being connected to the temperature sensor.

[0007] In one or more embodiments of the present application, the second connection portion is provided with an opening for installing a temperature sensor, the temperature sensor is embedded in the opening on a side facing the battery cell top cover, and the second connection portion and the temperature sensor are connected by a thermally conductive adhesive.

[0008] In one or more embodiments of the present application, it also includes:

[0009] A wiring harness plate, the wiring harness plate is arranged above the top cover of the battery cell, a first clearance hole for avoiding the first connecting portion is opened on the wiring harness plate, a first support platform is arranged on both sides of the first clearance hole, and a surface of the first connecting portion is higher than a surface of the first support platform;

[0010] The pressing piece is fixed to the first supporting platform and is pressed against the surface of the first connecting portion.

[0011] In one or more embodiments of the present application, a first fixing column is protruding from the surface of the first support platform, and a first fixing hole matching the first fixing column is opened on the clamping member. The clamping member is fixedly connected to the first support platform after being inserted into the first fixing hole through the first fixing column.

[0012] In one or more embodiments of the present application, a second clearance hole is opened on the wiring harness plate to avoid the second connecting portion, and a third support platform is provided between the first clearance hole and the second clearance hole to support the bending portion, and the surface of the third support platform is higher than the surface of the first support platform.

[0013] In one or more embodiments of the present application, second support platforms are provided on both sides of the second clearance hole, and the surface of the second support platform is higher than the surface of the third support platform.

[0014] In one or more embodiments of the present application, a second fixing column is protruding from the surface of the second support platform, and a second fixing hole matching the second fixing column is opened on the circuit board. The circuit board is fixedly connected to the second support platform after being inserted into the second fixing hole through the second fixing column.

[0015] In one or more embodiments of the present application, it also includes:

[0016] The heat conducting member is arranged between the battery cell top cover and the first connecting portion.

[0017] In one or more embodiments of the present application,

[0018] The compression rate of the heat conducting member under the pressing force of the first connecting part is 10% to 20%.

[0019] The pressing surface area between the first connecting portion of the heat-conducting connecting member and the heat-conducting member is larger than the connecting surface area between the second connecting portion and the temperature sensing member or the circuit board.

[0020] In a second aspect, the present application further provides a battery pack, comprising: a battery module as described in any one of the first aspects.

[0021] Based on the above technical solution, the battery module and battery pack provided by this application have at least the following beneficial technical effects:

[0022] The battery module provided by the present application includes: a battery cell, a heat-conducting connector and a circuit board, wherein the battery cell includes a battery cell top cover; the heat-conducting connector includes a first connecting portion, a second connecting portion and a bending portion connecting the first connecting portion and the second connecting portion, the bending portion is bent downward from the connection with the second connecting portion, the first connecting portion is pressed and arranged on the battery cell top cover, and the second connecting portion is heat-conductingly connected to the temperature sensor; part of the circuit board is arranged on the side of the second connecting portion away from the battery cell top cover, and is connected to the temperature sensor. Then, the first connecting portion of the heat-conducting connector can be directly or indirectly pressed on the battery cell top cover to directly collect the temperature of the battery cell top cover, and the temperature of the battery cell can be collected more realistically. The heat of the battery cell top cover collected by the first connecting portion is transferred to the second connecting portion through the bending portion, and then the temperature of the heat-conducting connector is directly collected through the temperature sensor connected to the second connecting portion and the circuit board connected to the temperature sensor, so that the temperature transfer path is short, the temperature transfer response is fast, the temperature loss is small, and the temperature measurement of the battery cell is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 is a schematic diagram of the three-dimensional structure of a battery module provided by one or more embodiments of the present application;

[0025] Figure 2 is a schematic diagram of the structure of a thermally conductive connector provided by one or more embodiments of the present application;

[0026] Figure 3 yes Figure 1 Enlarged view of point A in the middle;

[0027] Figure 4 yes Figure 3 The structural schematic diagram of the pressing member is omitted;

[0028] Figure 5 is a bottom perspective structural diagram of a thermally conductive connector according to one or more embodiments of the present application;

[0029] Figure 6 is a schematic diagram of an exploded structure of a battery module according to one or more embodiments of the present application;

[0030] Figure 7 is a schematic diagram of the structure of a wiring harness plate in a battery module in one or more embodiments of the present application;

[0031] Figure 8 It is a stress variation curve diagram of the heat conducting member in the battery module of one or more embodiments of the present application.

[0032] In the figure: 10-heat-conducting connector; 20-wiring board; 30-circuit board; 40-temperature sensor; 50-heat-conducting member; 60-pressing member; 101-first connecting portion; 102-second connecting portion; 103-bending portion; 200-second clearance hole; 201-first clearance hole; 202-first supporting platform; 203-first fixing column; 204-second supporting platform; 205-second fixing column; 206-third supporting platform; 301-second fixing hole; 601-first fixing hole. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] In the related art, the temperature of the battery is usually collected by collecting the temperature of the bus to reflect the temperature of the battery cell. However, when the battery is discharged at high power, the bus will generate a lot of heat due to its own internal resistance and the internal resistance of the welding with the battery cell pole, which will affect the actual collected temperature. Once the temperature is too high, the battery will also be affected, thereby affecting the safety of the battery.

[0038] Based on the above considerations, in order to solve the technical problem of inaccurate temperature collection of battery cells by temperature collection components existing in the prior art, the present application provides a battery module comprising: a battery cell, a thermally conductive connector and a circuit board, the battery cell comprising a battery cell top cover; the thermally conductive connector comprising a first connecting portion, a second connecting portion and a bending portion connecting the first connecting portion and the second connecting portion, the bending portion being bent downward from a connection with the second connecting portion, the first connecting portion being pressed against the battery cell top cover, and the second connecting portion being thermally connected to the temperature sensor; a portion of the circuit board being arranged on a side of the second connecting portion away from the battery cell top cover, and being connected to the temperature sensor.

[0039] In the technical solution of the embodiment of the present application, the first connecting part of the thermally conductive connector can be directly or indirectly pressed on the top cover of the battery cell to directly collect the temperature of the top cover of the battery cell and more truly reflect the temperature of the battery cell. The heat of the top cover of the battery cell collected by the first connecting part is transferred to the second connecting part through the bending part, and then the temperature of the thermally conductive connector is directly collected through the temperature sensor thermally connected to the second connecting part and the circuit board connected to the temperature sensor, so that the temperature transfer path is short, the temperature transfer response is fast, the temperature loss is small, and the temperature measurement of the battery cell is more accurate.

[0040] The battery module of the present application is applicable to various battery-using electrical devices, which may be, but are not limited to, mobile phones, tablets, laptops, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0041] The battery pack of the embodiment of the present application refers to a physical module including one or more battery modules to provide higher voltage and capacity.

[0042] The technical solution of the embodiments of the present application is described in detail below in conjunction with the accompanying drawings.

[0043] Please refer to Figure 1 , Figure 2 and Figure 3The embodiment of the present application provides a battery module, including: a battery cell, a thermally conductive connector 10 and a circuit board 30, the battery cell including a battery cell top cover; the thermally conductive connector 10 includes a first connecting portion 101, a second connecting portion 102 and a bending portion 103 connecting the first connecting portion 101 and the second connecting portion 102, the bending portion 103 is bent downward from the connection with the second connecting portion 102, the first connecting portion 101 is pressed and arranged on the battery cell top cover, and the second connecting portion 102 is thermally connected to the temperature sensor 40; a portion of the circuit board 30 is arranged on a side of the second connecting portion 102 away from the battery cell top cover, and is connected to the temperature sensor 40.

[0044] Among them, the battery cell is the smallest unit that makes up the battery. The battery cell includes an outer shell, a battery cell top cover, an electrode assembly and other functional components. The battery cell top cover refers to a component that covers the opening of the outer shell to isolate the internal environment of the battery cell from the external environment. The thermally conductive connector 10 is a structural component that can conduct heat and has good thermal conductivity. The bending portion 103 is bent downward from the connection with the second connecting portion 102, which can be understood as: the bending portion 103 makes the second connecting portion 102 and the first connecting portion 101 not on the same horizontal plane. The circuit board 30 is a flexible circuit board. A circuit for collecting sampling signals of the battery cell is provided on the circuit board 30. The sampling signal includes an electrical signal that characterizes the working parameters of the battery cell, such as: a voltage signal, a temperature signal, an internal resistance signal, etc.

[0045] In the technical solution of the embodiment of the present application, the first connecting portion 101 of the thermally conductive connector 10 can be directly or indirectly pressed on the top cover of the battery cell to directly collect the temperature of the top cover of the battery cell to more truly reflect the temperature of the battery cell. The heat of the top cover of the battery cell collected by the first connecting portion 101 is transferred to the second connecting portion 102 through the bending portion 103, and then the temperature of the thermally conductive connector 10 is directly collected through the temperature sensor 40 thermally connected to the second connecting portion 102 and the circuit board 30 connected to the temperature sensor 40, so that the temperature transfer path is short, the temperature transfer response is fast and the temperature loss is small, and the temperature measurement of the battery cell is more accurate.

[0046] In some embodiments, along the thickness direction of the thermally conductive connector 10, the bent portion 103 bends downward so that the first connection portion 101 and the second connection portion 102 are not on the same horizontal plane. In some embodiments, along the thickness direction of the thermally conductive connector 10, the height of the first connection portion 101 is lower than the height of the second connection portion 102.

[0047] In the technical solution of the embodiment of the present application, through the above arrangement, on the one hand, space can be saved in the height direction, and on the other hand, since the height of the first connection part 101 is lower than that of the second connection part 102, the first connection part 101 can be better pressed and arranged on the battery cell top cover, which can shorten the heat transfer path and facilitate the increase of the contact area with the battery cell top cover, thereby increasing the transferred heat and more accurately collecting the temperature of the battery top cover. At the same time, the second connection part 102 can also be kept away from the battery cell top cover, which is convenient for installing the temperature sensor 40 while preventing the temperature sensor 40 from being damaged.

[0048] In some embodiments, the thermally conductive connector 10 may be made of metal so that the thermally conductive connector 10 has higher thermal conductivity.

[0049] In some embodiments, the temperature sensing element 40 may be an NTC thermistor.

[0050] In some embodiments, please refer to Figure 5 , the second connection part 102 is provided with an opening for installing the temperature sensor 40, the temperature sensor 40 is embedded in the opening on the side facing the battery cell top cover, and the second connection part 102 and the temperature sensor 40 are connected by a thermal conductive adhesive. Among them, the second connection part 102 is provided with an opening for installing the temperature sensor 40, which can be understood as: an opening is provided on the second connection part 102 in the thickness direction of the second connection part 102 to allow a part of the structure of the temperature sensor 40 to be embedded, so that the part of the structure of the temperature sensor 40 is embedded in the opening in the direction of the battery cell top cover, and the rest of the temperature sensor 40 is located on the circuit board 30 on the side of the second connection part 102 away from the battery cell top cover, and is connected to the circuit board 30. The connection between the second connection part 102 and the temperature sensor 40 by the thermal conductive adhesive can be understood as the contact surface of the second connection part 102 and the temperature sensor 40 are both connected by the thermal conductive adhesive. At the same time, the thermal conductive adhesive can directly cover the outside of the temperature sensor 40 and connect to the side of the second connection part 102 facing the battery cell top cover, thereby increasing the contact area between the temperature sensor 40 and the second connection part 102, improving the safety of the temperature sensor 40, and preventing the temperature sensor 40 from colliding with the battery cell top cover. In some embodiments, the thermal conductive adhesive can be a UV adhesive.

[0051] In the technical solution of the embodiment of the present application, the temperature sensor 40 is arranged downward through the above arrangement to prevent the condensed water above the circuit board 30 from gathering, and it is not easy for the temperature sensor 40 to enter the water vapor, which will not affect the temperature collected by the temperature sensor 40, so that the temperature collected by the temperature sensor 40 is more accurate. At the same time, by coating the temperature sensor 40 with thermal conductive glue, the temperature sensor 40 can be further prevented from contacting with water vapor, thereby improving the waterproof performance.

[0052] In some embodiments, please refer to Figure 3 The battery module of the present application also includes: a wiring harness plate 20 and a clamping member 60. The wiring harness plate 20 is arranged above the top cover of the battery cell. The wiring harness plate 20 is provided with a first clearance hole 201 for avoiding the first connection part 101. The wiring harness plate 20 is provided with a first support platform 202 on both sides of the first clearance hole 201. The surface of the first connection part 101 is higher than the surface of the first support platform 202; the clamping member 60 is fixed to the first support platform 202 and is clamped on the surface of the first connection part 101.

[0053] The circuit board 30 is arranged above the wiring harness plate 20. The length direction and width direction of the wiring harness plate 20 are consistent with the length direction and width direction of the battery module. The wiring harness plate 20 is arranged above the battery cell top cover. The wiring harness plate 20 is provided with a first clearance hole 201 for avoiding the first connection part 101. It can be understood that: the wiring harness plate 20 is provided with a first clearance hole 201, and the first clearance hole 201 passes through the thickness direction of the wiring harness plate 20 so as to expose the battery cell top cover. The first connection part 101 is placed in the first clearance hole 201 so as to be pressed on the battery cell top cover. The clamping member 60 can be a pressing plate of insulating material.

[0054] In the technical solution of the embodiment of the present application, through the above-mentioned arrangement, by making the surface of the first connection part 101 higher than the first support platform 202, the pressing piece 60 is fixed to the first support platform 202 and pressed against the surface of the first connection part 101, so that the pressing piece 60 can give the first connection part 101 a downward pressing force on the battery cell top cover, so that the first connection part 101 can always maintain a certain pressing contact area with the battery cell top cover, and is not prone to poor contact due to vibration of the battery cell.

[0055] In some embodiments, please refer to Figure 4 and Figure 6 A first fixing column 203 is convexly provided on the surface of the first support platform 202, and a first fixing hole 601 matching with the first fixing column 203 is opened on the clamping piece 60. The clamping piece 60 is inserted into the first fixing hole 601 through the first fixing column 203 and then fixedly connected to the first support platform 202, so that the clamping piece 60 is conveniently installed to the first fixing column 203 on the side of the first connecting portion 101 away from the battery cell top cover, thereby improving installation convenience.

[0056] The first fixing column 203 may be a hot riveting column.

[0057] In the technical solution of the embodiment of the present application, the first fixing column 203 is inserted into the first fixing hole 601 of the clamping piece 60, and then the clamping piece 60 is fixed to the wiring harness plate 20 by means of hot riveting. At the same time, the clamping piece 60 can press the first connecting part 101 onto the top cover of the battery cell, which is convenient for alignment installation and makes the connection firm and reliable.

[0058] In some embodiments, please refer to Figure 4 , Figure 6 and Figure 7 A second clearance hole 200 is opened on the wiring harness plate 20 to avoid the second connecting portion 102, and a third support platform 206 is provided between the first clearance hole 201 and the second clearance hole 200 to support the bending portion 103, and the surface of the third support platform 206 is higher than the surface of the first support platform 202.

[0059] The second clearance hole 200 penetrates through the thickness direction of the wiring harness plate 20 to expose the battery cell top cover. The second connecting portion 102 is placed in the second clearance hole 200 .

[0060] In the technical solution of the embodiment of the present application, through the above arrangement, the first connection part 101 of the heat-conducting connector 10 is placed in the first clearance hole 201, the second connection part 102 is placed in the second clearance hole 200, and the third support platform 206 supports the bent part 103, so that the fixation of the entire heat-conducting connector 10 can be more stable, and it is also convenient for the pre-installation of the heat-conducting connector 10 to avoid the position deviation of the first connection part 101 and the second connection part 102. It should be noted that by arranging the second connection part 102 in the second clearance hole 200, space in the height direction is saved.

[0061] In some embodiments, please refer to Figure 6 and Figure 7 A second support platform 204 is provided on both sides of the second clearance hole 200, and the surface of the second support platform 204 is higher than the surface of the third support platform 206. The second support platform 204 is used to support a portion of the circuit board 30, and further, to support a portion of the circuit board 30 connected to the second connection portion 102, thereby improving the stability of the portion of the circuit board 30 and avoiding poor circuit contact.

[0062] A second fixing post 205 is protruding from the surface of the second support platform 204 , and a second fixing hole 301 matching with the second fixing post 205 is opened on the circuit board 30 . The circuit board 30 is fixedly connected to the second support platform 204 after the second fixing post 205 is inserted into the second fixing hole 301 .

[0063] The second fixing column 205 may be a hot riveting column.

[0064] In the technical solution of the embodiment of the present application, through the above-mentioned arrangement, the second fixing hole 301 set on the partial structure of the circuit board 30 can be fixed to the second fixing column 205 of the second support platform 204, and then the partial structure of the circuit board 30 is pressed on the second connecting part 102 by thermal riveting, so that the temperature sensor 40 connected to the circuit board 30 can have a more stable thermal contact area with the second connecting part 102, and then the heat collected by the second connecting part 102 is more transferred to the temperature sensor 40, so that the temperature measurement of the battery cell is more accurate.

[0065] Optionally, the second connection part 102 is fixedly connected to a part of the circuit board 30, so as to improve the stability of the thermal conductive connector 10. Optionally, the second connection part 102 can be arranged at the edge of the circuit board 30, or the second connection part can be arranged inside the circuit board 30. In this case, a through hole needs to be arranged inside the circuit board 30 to accommodate the second connection part 102, which can accommodate at least part of the second connection part 102, or the entire second connection part 102, or the entire thermal conductive connector 10. The size of the through hole and the position of the through hole can be selected as needed to adaptively adjust the installation position of the thermal conductive connector 10. In the present application, a through hole is opened inside the circuit board 30 to accommodate the entire thermal conductive connector 10. At the same time, the through hole can also expose the first support platform 202, the second support platform 204 and the third support platform 206 to facilitate the installation and fixation of the thermal conductive connector 10.

[0066] In some embodiments, please refer to Figure 7 The battery module further includes: a heat conducting member 50 , which is disposed between the battery cell top cover and the first connecting portion 101 .

[0067] The heat conducting member 50 may be a heat conducting pad. The heat conducting pad is made of organic silicon as a base material and filled with heat conducting ceramic powder, and has good thermal conductivity and insulation flame retardancy. In some embodiments, the heat conducting member 50 is pressed between the battery cell top cover and the first connecting portion 101.

[0068] In the technical solution of the embodiment of the present application, the heat conductive member 50 is compressed and arranged between the battery cell top cover and the first connecting part 101, so that the heat conductive member 50 can provide a buffering effect for the compression surface of the first connecting part 101, and the heat of the battery cell top cover can be transferred to the first connecting part 101 through the heat conductive member 50, and the heat conductive member 50 is compressed between the battery cell top cover and the first connecting part 101, and there is always elastic force and rebound force between the heat conductive member 50 and the first connecting part 101, which makes it difficult for the first connecting part 101 of the heat conductive connector 10 to be deformed, and the compression area between the first connecting part 101 and the heat conductive member 50 can be maintained, and it is not easy to cause poor contact due to vibration.

[0069] In some embodiments, the compression rate of the heat conducting member 50 under the pressing force of the first connecting portion 101 is 10% to 20%.

[0070] In the technical solution of the embodiment of this application, please refer to Figure 8 After conducting aging tests and stress-strain tests on the thermally conductive pad, the applicant set the compression rate of the thermally conductive component 50 at 10% to 20%. If the compression rate exceeds 20%, the internal material of the thermally conductive component 50 will be damaged, the stress retention will deteriorate, and the contact between the first connecting part 101 and the thermally conductive component 50 will be poor. If the compression rate is lower than 10%, the stress of the thermally conductive component 50 is also small, and the contact area with the first connecting part 101 cannot be guaranteed.

[0071] In some embodiments, the pressing surface area between the first connecting portion 101 of the thermally conductive connector 10 and the thermally conductive member 50 is larger than the connecting surface area between the second connecting portion 102 and the temperature sensor 40 or the circuit board 30 .

[0072] Among them, the compression surface area of ​​the first connecting part 101 and the heat conducting part 50 can be the area of ​​the contact surface between the first connecting part 101 and the heat conducting part 50, the connection surface area of ​​the second connecting part 102 and the temperature sensing part 40 can be the area of ​​the contact surface between the second connecting part 102 and the temperature sensing part 40, and the connection surface area of ​​the second connecting part 102 and the circuit board 30 can be the area of ​​the contact surface between the second connecting part 102 and the circuit board 30.

[0073] In the technical solution of the embodiment of the present application, through the above-mentioned configuration, the heat conduction area between the first connection portion 101 and the heat conduction member 50 can be increased, so as to increase the transferred heat and more accurately measure the temperature of the battery cell.

[0074] The present application also provides a battery pack, comprising: a battery module as described in any of the above items.

[0075] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A battery module, characterized in that: include: A battery cell, the battery cell comprising a battery cell top cover; A heat-conducting connector (10), the heat-conducting connector (10) comprising a first connecting portion (101), a second connecting portion (102), and a bending portion (103) connecting the first connecting portion (101) and the second connecting portion (102), the bending portion (103) being bent downward from a connection with the second connecting portion (102), the first connecting portion (101) being pressed against the battery cell top cover, and the second connecting portion (102) being heat-conductingly connected to a temperature sensor (40); A circuit board (30), part of which is arranged on a side of the second connection portion (102) away from the battery cell top cover, and is connected to the temperature sensor (40).

2. The battery module according to claim 1, characterized in that: The second connection portion (102) is provided with an opening for installing the temperature sensor (40); the temperature sensor (40) is embedded in the opening on a side facing the battery cell top cover; the second connection portion (102) and the temperature sensor (40) are connected via a heat-conducting adhesive.

3. The battery module according to claim 1, characterized in that: Also includes: A wiring harness plate (20), the wiring harness plate (20) being arranged above the battery cell top cover, the wiring harness plate (20) being provided with a first clearance hole (201) for avoiding the first connection portion (101), the wiring harness plate (20) being provided with first support platforms (202) on both sides of the first clearance hole (201), the surface of the first connection portion (101) being higher than the surface of the first support platform (202); A pressing member (60), the pressing member (60) is fixed to the first supporting platform (202) and is pressed against the surface of the first connecting portion (101).

4. The battery module according to claim 3, characterized in that: A first fixing column (203) is protrudingly provided on the surface of the first supporting platform (202), and a first fixing hole (601) matching with the first fixing column (203) is opened on the clamping member (60). The clamping member (60) is fixedly connected to the first supporting platform (202) after being inserted into the first fixing hole (601) through the first fixing column (203).

5. The battery module according to claim 3, characterized in that: The wiring harness plate (20) is provided with a second clearance hole (200) for avoiding the second connecting portion (102); a third support platform (206) is provided between the first clearance hole (201) and the second clearance hole (200) to support the bending portion (103); and a surface of the third support platform (206) is higher than a surface of the first support platform (202).

6. The battery module according to claim 5, characterized in that: Second support platforms (204) are provided on both sides of the second clearance hole (200), and the surface of the second support platform (204) is higher than the surface of the third support platform (206).

7. The battery module according to claim 6, characterized in that: A second fixing column (205) is protrudingly provided on the surface of the second supporting platform (204), and a second fixing hole (301) matching with the second fixing column (205) is opened on the circuit board (30), and the circuit board (30) is fixedly connected to the second supporting platform (204) after being inserted into the second fixing hole (301) via the second fixing column (205).

8. The battery module according to any one of claims 1 to 7, characterized in that: Also includes: A heat conducting member (50) is arranged between the battery cell top cover and the first connecting portion (101).

9. The battery module according to claim 8, characterized in that: The compression rate of the heat conducting member (50) under the pressing force of the first connecting portion (101) is 10% to 20%. The pressing surface area between the first connecting portion (101) of the heat-conducting connecting member (10) and the heat-conducting member (50) is larger than the connecting surface area between the second connecting portion (102) and the temperature sensing member (40) or the circuit board (30).

10. A battery pack, characterized in that: include: The battery module according to any one of claims 1 to 9.

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