Battery module, battery pack and vehicle

Abstract

The utility model discloses a battery module, a battery pack and a vehicle. The battery module comprises a shell, a battery cell, an acquisition circuit board and a terminal, the shell is provided with an accommodating cavity, the battery cell and the acquisition circuit board are arranged in the accommodating cavity, and the acquisition circuit board is electrically connected with a pole of the battery cell. And the terminal is a female seat or a male seat, is arranged on the acquisition circuit board and is electrically connected with the acquisition circuit board. The shell is provided with a through hole, and at least part of the terminal extends out of the accommodating cavity from the through hole. The design is beneficial to saving the internal space of the battery, so that the battery cell can be arranged to be larger in a limited battery pack body space, the capacity of the battery cell is increased, and the overall energy density of the battery is improved.

Description

Technical Field

[0001] This application relates to the field of automobiles, and particularly to a battery module, a battery pack, and a vehicle. Background Art

[0002] In the field of new energy vehicles, generally, a collector is required to collect battery information and transmit it to a controller. In current vehicles on the market, the collector and the battery module are independently arranged together inside the battery pack. This is beneficial for the modular design of the collector and the battery module respectively, but the space utilization rate is not high. Summary of the Utility Model

[0003] The purpose of this application is to provide a battery module, a battery pack, and a vehicle. The battery module integrates a collector, occupies less overall space, can set a larger electric energy capacity within the limited space of the battery pack body, thereby improving the overall energy density of the battery and increasing the vehicle's cruising range.

[0004] In a first aspect of this application, a battery module is provided, including a housing, battery cells, a collection circuit board, and terminals. The housing is provided with a receiving cavity, the battery cells and the collection circuit board are both arranged in the receiving cavity, and the collection circuit board is electrically connected to the electrode posts of the battery cells. The terminal is a female socket or a male socket, the terminal is arranged on the collection circuit board and is electrically connected to the collection circuit board. The housing is provided with a through hole, and at least a part of the terminal extends out of the receiving cavity through the through hole.

[0005] In the battery module provided by the embodiments of this application, the terminal serves as an external communication interface and is used to be electrically connected to a controller outside the battery module to transmit the information collected by the collection circuit board to the controller. The collection circuit board is electrically connected to the controller outside the battery module through the terminal. The terminal has a small volume, and the collection circuit board does not need to be provided with a separate sampling wire harness to extend from inside the battery module to the outside of the battery module to be electrically connected to the controller, which is beneficial for saving the space inside the battery module, improving the space utilization rate, enabling the battery module to have more space to set battery cells with a larger electric energy capacity, and thereby increasing the overall energy density of the battery. In addition, the reduction of the wire harness inside the battery module reduces the assembly difficulty, and the components inside the battery module are easier to install, which is beneficial for improving the assembly efficiency and reducing the cost.

[0006] In addition, the collection circuit board and the battery cells are encapsulated in the housing to form an intelligent standardized module, which is beneficial for standardized production, thereby improving the production efficiency, shortening the development time, and reducing the cost. When setting up the battery pack, stacking multiple battery modules together is convenient for assembly and is also beneficial for saving the space inside the battery pack. In the limited space, the battery pack can be provided with more battery modules to set a larger electric energy capacity, thereby increasing the volume energy density of the battery pack and increasing the vehicle's cruising range.

[0007] In some embodiments, a sealing ring is provided between the outer peripheral surface of the terminal and the inner wall surface of the through hole. By providing the sealing ring, the interior of the battery module is in a sealed state, preventing water from entering the interior of the battery module, thereby ensuring the normal operation of the components inside the battery module.

[0008] In some embodiments, the acquisition circuit board is electrically connected to the pole column of the battery cell through an FPC. The FPC has a small volume, which is beneficial to saving the space inside the battery module.

[0009] In some embodiments, the battery module further includes a separator plate disposed in the receiving cavity. The separator plate is located between the acquisition circuit board and the battery cell. In the direction from the battery cell to the acquisition circuit board, the projection of the separator plate covers the projection of the acquisition circuit board. The separator plate isolates the acquisition circuit board from the battery cell, avoiding short circuit caused by contact between the acquisition circuit board and the battery cell.

[0010] In some embodiments, in the direction from the battery cell to the acquisition circuit board, the acquisition circuit board is spaced opposite to the separator plate. This design is beneficial to preventing the heat of the battery cell from being transferred to the acquisition circuit board through the separator plate, enabling the components on the acquisition circuit board to have a good operating temperature and better performance of the acquisition circuit board.

[0011] In some embodiments, a protrusion is provided on the side of the separator plate facing the acquisition circuit board, and a clamping groove is provided on the protrusion. The acquisition circuit board is snapped into the clamping groove. The acquisition circuit board is mounted on the separator plate by a snap connection method, which is convenient for assembly and beneficial to improving work efficiency.

[0012] In some embodiments, the acquisition circuit board is also fixedly connected to the separator plate by screws. The acquisition circuit board is mounted on the separator plate by a snap connection and a threaded connection method, and the connection is more stable.

[0013] In some embodiments, the housing includes an outer shell and a cover plate. Along the height direction of the battery module, the outer shell is provided with a first sub-cavity, and the cover plate is provided with a second sub-cavity. The cover plate closes the opening of the first sub-cavity, and the first sub-cavity and the second sub-cavity communicate to form a receiving cavity. The battery cell is located in the first sub-cavity, and the acquisition circuit board is located in the second sub-cavity. The through hole is provided on the cover plate. After the cover plate is removed, the acquisition circuit board is completely exposed outside the housing. Compared with the scheme where the acquisition circuit board and the battery cell are arranged in the same cavity, this arrangement is more convenient for maintenance.

[0014] The second aspect of the present application provides a battery pack, including a box body and the battery module provided in the first aspect of the present application. The box body is provided with a receiving cavity, and a plurality of battery modules are installed in the receiving cavity.

[0015] The third aspect of the present application provides a vehicle, including the battery pack provided in the second aspect of the present application.

[0016] In the battery module provided by the embodiment of the present application, the terminal serves as an external communication interface. The terminal is used for electrically connecting to a controller outside the battery module to transmit the information collected by the acquisition circuit board to the controller. The acquisition circuit board is electrically connected to the controller outside the battery module through the terminal. The terminal has a small volume, and the acquisition circuit board does not need to be provided with a separate sampling wire harness to extend from inside the battery module to the outside of the battery module for electrical connection to the controller, which is beneficial to saving the space inside the battery module, improving the space utilization rate, enabling the battery module to have a larger space to set cells with a larger electrical energy capacity, and thus improving the overall energy density of the battery. In addition, the reduction of the wire harness inside the battery module reduces the assembly difficulty, and the components inside the battery module are easier to install, which is beneficial to improving the assembly efficiency and reducing the cost.

[0017] In addition, the acquisition circuit board and the cells are encapsulated in a housing to form an intelligent standardized module, which is beneficial to standardized production, thereby improving the production efficiency, shortening the development time, and reducing the cost. When setting up the battery pack, multiple battery modules are stacked together, which is convenient for assembly and beneficial to saving the space inside the battery pack. In a limited space, more battery modules can be set in the battery pack to set a larger electrical energy capacity, thereby increasing the volume energy density of the battery pack and increasing the cruising range of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the present application, the drawings required for the embodiments will be briefly introduced below.

[0019] Figure 1 It is a schematic structural diagram of the battery module provided by the embodiment of the present application.

[0020] Figure 2 is Figure 1 an exploded view of the battery module shown in

[0021] Figure 3 is Figure 1 a cross-sectional view of the battery module shown in

[0022] Figure 4 It is a schematic structural diagram of the battery module (omitting the cover plate) provided by the embodiment of the present application from another angle.

[0023] Figure 5 is Figure 3 an enlarged view of part A in

[0024] Figure 6 is Figure 1 a cross-sectional view of the battery module shown in

[0025] Figure 7 is Figure 6 an enlarged view of part B in

[0026] Figure 8 is Figure 4 A cross-sectional view of the battery module shown in the figure cut along the L3-L3 line.

[0027] Figure 9 is Figure 8 An enlarged view of the location C in the figure.

[0028] Description of reference numerals: 1000 - battery module, 100 - housing, 101 - receiving cavity, 102 - mounting opening, 10 - outer shell, 11 - first sub-cavity, 111 - side of the mating cavity, 20 - cover plate, 21 - second sub-cavity, 22 - through hole, 23 - first mounting groove, 24 - second mounting groove, 22a - first through hole, 22b - second through hole, 200 - battery cell, 201 - pole post, 201a - positive pole post, 201b - negative pole post, 300 - separator, 30 - protrusion, 31 - clamping groove, 40 - screw seat, 400 - acquisition circuit board, 500 - terminal, 500a - first terminal, 500b - second terminal, 600 - flexible printed circuit (FPC), 700 - sealing ring, 700a - first sealing ring, 700b - second sealing ring. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. As Figure 1 shown, for the convenience of understanding, the length direction of the battery module 1000 is defined as the X-axis, the width direction of the battery module 1000 is defined as the Y-axis, and the height direction of the battery module 1000 is defined as the Z-axis. The X-axis, Y-axis, and Z-axis are perpendicular to each other.

[0030] Please refer to Figure 1 , Figure 2 and Figure 3 , the battery module 1000 provided in the embodiments of the present application includes a housing 100, a battery cell 200, a separator 300, an acquisition circuit board 400, and a terminal 500. The housing 100 is provided with a receiving cavity 101, and the battery cell 200, the separator 300, the acquisition circuit board 400, and the terminal 500 are all arranged in the receiving cavity 101. Specifically, the housing 100 includes an outer shell 10 and a cover plate 20. Along the Z-axis direction, the outer shell 10 is provided with a first sub-cavity 11, the first sub-cavity 11 is arranged on the side of the outer shell 10 facing the cover plate 20, and the opening of the first sub-cavity 11 faces the cover plate 20. The cover plate 20 is provided with a second sub-cavity 21, the second sub-cavity 21 is arranged on the side of the cover plate 20 facing the outer shell 10, and the opening of the second sub-cavity 21 faces the outer shell 10.

[0031] The cover plate 20 is sleeved on one end of the housing 10 along the Z-axis direction by means including but not limited to snap connection, bonding or screw connection. One end of the housing 10 facing the cover plate 20 extends into the second sub-cavity 21. The cover plate 20 closes the opening of the first sub-cavity 11, and the first sub-cavity 11 and the second sub-cavity 21 communicate to form a receiving cavity 101.

[0032] Please refer to Figure 3 and Figure 4 wherein, the battery cell 200 is installed in the first sub-cavity 11. The separator 300 and the acquisition circuit board 400 are located in the second sub-cavity 21. Specifically, the separator 300 is stacked on one side of the housing 10 facing the cover plate 20 along the thickness direction by means including but not limited to snap connection, bonding or screw connection.

[0033] The size of the separator 300 in the Y-axis direction is larger than the size of the opening of the first sub-cavity 11 in the Y-axis direction. The size of the separator 300 in the X-axis direction is smaller than the size of the opening of the first sub-cavity 11 in the X-axis direction. It can be understood that the separator 300 does not completely block the opening of the first sub-cavity 11, and there is an installation opening 102 between the separator 300 and the housing 10.

[0034] The acquisition circuit board 400 is fixedly connected to the side of the separator 300 facing away from the battery cell 200 by means including but not limited to snap connection, bonding or screw connection. In the direction of the battery cell 200 pointing to the acquisition circuit board 400 (the positive direction of the Z-axis), the projection of the separator 300 covers the projection of the acquisition circuit board 400. It can be understood that the separator 300 is located between the acquisition circuit board 400 and the battery cell 200, and the separator 300 isolates the acquisition circuit board 400 from the battery cell 200 to prevent short circuit caused by the contact between the acquisition circuit board 400 and the battery cell 200. In some other embodiments, the separator 300 can also be omitted, and the acquisition circuit board 400 can be fixedly connected to the housing 10 or the cover plate 20.

[0035] Please refer to Figure 3 、 Figure 4 and Figure 5 In this embodiment, the acquisition circuit board 400 is electrically connected to the pole post of the battery cell 200. The acquisition circuit board 400 is used to acquire the voltage, current or temperature of the battery cell 200 and transmit the acquired data to the controller outside the battery module 1000.

[0036] In this embodiment, the acquisition circuit board 400 is electrically connected to the electrode post 201 of the battery cell 200 through a flexible printed circuit (FPC) 600. Specifically, the first sub-cavity 11 includes a side surface 111 of the fitting cavity, and the side surface 111 of the fitting cavity is spaced opposite to the battery cell 200. The electrode post 201 includes a positive electrode post 201a and a negative electrode post 201b, and both the positive electrode post 201a and the negative electrode post 201b are disposed on the side of the battery cell 200 facing the side surface 111 of the fitting cavity. The FPC 600 is L-shaped. One end of the FPC 600 is welded to the acquisition circuit board 400 to achieve fixed connection and electrical connection with the acquisition circuit board 400. The other end of the FPC 600 extends into the space between the side surface 111 of the fitting cavity and the battery cell 200 from the installation opening 102 and is welded and fixed to the positive electrode post 201a and the negative electrode post 201b respectively to achieve electrical connection.

[0037] In some other embodiments, the electrode post 201 may also be disposed on the side of the battery cell 200 facing the cover plate 20. The separator plate 300 is provided with a through hole, and the electrode post 201 exposes from the through hole on the side of the separator plate 300 facing away from the battery cell 200.

[0038] Please refer to Figure 6 and Figure 7 , the terminal 500 is located in the second sub-cavity 21, and the terminal 500 is provided with the acquisition circuit board 400. Specifically, the terminal 500 is fixedly connected to the side of the acquisition circuit board 400 facing away from the separator plate 300 and is electrically connected to the acquisition circuit board 400. The terminal 500 serves as an external communication interface, and the terminal 500 is used to be electrically connected to the connecting member of the controller to achieve transmitting the information collected by the acquisition circuit board 400 to the controller outside the battery module 1000.

[0039] Exemplarily, in this embodiment, the terminal 500 is a female socket. The housing 100 is provided with a through hole 22, and the through hole 22 is disposed on the cover plate 20. The through hole 22 penetrates the bottom surface of the cavity of the second sub-cavity 21 and the side of the cover plate 20 facing away from the second sub-cavity 21, that is, the through hole 22 communicates the second sub-cavity 21 with the outside of the cover plate 20. At least a part of the terminal 500 extends out of the receiving cavity 101 from the through hole 22, and the socket of the terminal 500 exposes from the through hole 22 to the outside of the housing 100. The connecting member of the controller is a male socket, and the connecting member is inserted into the socket of the terminal 500 to achieve electrical connection. In some other embodiments, the terminal 500 may be a male socket, and the connecting member of the controller may be a female socket.

[0040] It can be understood that in the battery module 1000 provided by the embodiments of the present application, by extending the terminal 500 outside the housing 100, the acquisition circuit board 400 is electrically connected to a controller outside the battery module 1000 through the terminal 500. The terminal 500 has a small volume, and the acquisition circuit board 400 does not need to be provided with a separate sampling wire harness to extend from the inside of the battery module 1000 to the outside of the battery module 1000 for electrical connection with the controller, which is beneficial to saving the space inside the battery module 1000, improving the space utilization rate, enabling the battery module 1000 to have a larger space to set the battery cells 200 with a larger electrical energy capacity, and thus improving the overall energy density of the battery. In addition, the reduction of the wire harness inside the battery module 1000 reduces the assembly difficulty, and the components inside the battery module 1000 are easier to install, which is beneficial to improving the assembly efficiency and reducing the cost.

[0041] In addition, the acquisition circuit board 400 and the battery cells 200 are encapsulated in the housing 100, and only a part of the terminal 500 is exposed as a communication interface in the whole battery module, forming an intelligent standardized module, which is beneficial to standardized production, thus improving the production efficiency, shortening the development time, and reducing the cost. When setting up the battery pack, multiple battery modules 1000 are stacked together, which is convenient for assembly and beneficial to saving the space inside the battery pack. In a limited space, more battery modules 1000 can be set in the battery pack to set a larger electrical energy capacity, thereby increasing the volume energy density of the battery pack and the cruising range of the vehicle.

[0042] The acquisition circuit board 400 is electrically connected to the pole posts of the battery cells 200 through the FPC600. The FPC600 has a small volume, which is beneficial to saving space. And the acquisition circuit board 400 and the FPC600 are welded and fixed, which is beneficial to reducing the risk of intermediate connection failure.

[0043] The acquisition circuit board 400 is located in the second sub-cavity 21. After removing the cover plate 20, the acquisition circuit board 400 is completely exposed outside the housing 100, which is convenient for maintenance. In other embodiments, the acquisition circuit board 400 can also be arranged in the first sub-cavity 11.

[0044] Please refer to Figure 6 and Figure 7 , in some embodiments, the terminal 500 includes a first terminal 500a and a second terminal 500b, the through holes 22 include a first through hole 22a and a second through hole 22b. The first through hole 22a and the second through hole 22b are both arranged on the cover plate 20. Along the Y-axis direction, the first through hole 22a and the second through hole 22b are arranged at intervals. The first through hole 22a and the second through hole 22b both penetrate the bottom surface of the second sub-cavity 21 and the side of the cover plate 20 facing away from the second sub-cavity 21. The first through hole 22a communicates the second sub-cavity 21 with the outside of the cover plate 20, and the second through hole 22b communicates the second sub-cavity 21 with the outside of the cover plate 20.

[0045] At least a part of the first terminal 500a extends out of the accommodation cavity 101 from the first through hole 22a, and at least a part of the second terminal 500b extends out of the accommodation cavity 101 from the second through hole 22b. The first terminal 500a is a high-side communication terminal, and the second terminal 500b is a low-side communication terminal. Both the first terminal 500a and the second terminal 500b can transmit the information (voltage and temperature of the battery cell 200) collected by the acquisition circuit board 400 to the controller or the next / previous collector. At the same time, the controller can actively control the acquisition circuit board 400 through the first terminal 500a and the second terminal 500b, including adjusting its working and sleeping states, collecting information of the battery cell 200, and performing voltage equalization on the battery cell 200, etc.

[0046] Please refer to Figure 7 , in some embodiments, a sealing ring 700 is provided between the outer peripheral surface of the terminal 500 and the hole wall surface of the through hole 22. Specifically, the number of the sealing rings 700 is two, and the two sealing rings 700 are respectively a first sealing ring 700a and a second sealing ring 700b. The first sealing ring 700a is arranged between the outer peripheral surface of the first terminal 500a and the hole wall surface of the first through hole 22a. A first installation groove 23 is provided on the hole wall surface of the first through hole 22a. The first sealing ring 700a is installed in the first installation groove 23. The outer peripheral surface of the first terminal 500a and the groove wall surface of the first installation groove 23 respectively abut against the first sealing ring 700a, so that a sealed state is formed between the outer peripheral surface of the first terminal 500a and the hole wall surface of the first through hole 22a. In other embodiments, the first installation groove 23 can be provided on the outer peripheral surface of the first terminal 500a.

[0047] In other embodiments, the first installation groove 23 may not be provided, and the hole wall surface of the first through hole 22a and the outer peripheral surface of the first terminal 500a respectively abut against the first sealing ring 700a, so that the first sealing ring 700a is fixed between the hole wall surface of the first through hole 22a and the outer peripheral surface of the first terminal 500a.

[0048] The second sealing ring 700b is arranged between the outer peripheral surface of the second terminal 500b and the hole wall surface of the second through hole 22b. A second installation groove 24 is provided on the hole wall surface of the second through hole 22b. The second sealing ring 700b is installed in the second installation groove 24. The outer peripheral surface of the second terminal 500b and the groove wall surface of the second installation groove 24 respectively abut against the second sealing ring 700b, so that a sealed state is formed between the outer peripheral surface of the second terminal 500b and the hole wall surface of the second through hole 22b. In other embodiments, the second installation groove 24 can be provided on the outer peripheral surface of the second terminal 500b.

[0049] In some other embodiments, the second mounting groove 24 may not be provided, and the hole wall surface of the second through hole 22b and the outer peripheral surface of the second terminal 500b respectively abut against the second sealing ring 700b, so that the second sealing ring 700b is fixed between the hole wall surface of the second through hole 22b and the outer peripheral surface of the second terminal 500b.

[0050] In this embodiment, by providing the first sealing ring 700a and the second sealing ring 700b, the inside of the battery module 1000 is in a sealed state, which is beneficial to improving the stability of the internal circuit of the battery module 1000. In other embodiments, sealing can be achieved by applying a sealant.

[0051] Please refer to Figure 4 、 Figure 8 and Figure 9 As shown in, in some embodiments, in the direction from the battery cell 200 to the acquisition circuit board 400, the acquisition circuit board 400 and the isolation board 300 are spaced opposite to each other. Specifically, a protrusion 30 is provided on the side of the isolation board 300 facing the acquisition circuit board 400, and a clamping groove 31 is provided on the protrusion 30. The acquisition circuit board 400 is snapped into the clamping groove 31 to be fixedly connected to the isolation board 300.

[0052] Exemplarily, the number of the protrusions 30 is multiple. In this embodiment, the number of the protrusions 30 is 3. In some other embodiments, the number of the protrusions 30 can be 1, 2, 4, etc. The multiple protrusions 30 surround the outer periphery of the acquisition circuit board 400, and a plurality of clamping grooves 31 are correspondingly provided on the side of the multiple protrusions 30 facing the acquisition circuit board 400. The acquisition circuit board 400 is snapped into the multiple clamping grooves 31 to be fixedly connected to the isolation board 300.

[0053] In this embodiment, the acquisition circuit board 400 and the isolation board 300 are spaced apart, which is beneficial to preventing the heat of the battery cell 200 from being transferred to the acquisition circuit board 400 through the isolation board 300, ensuring that the components of the acquisition circuit board 400 have a good operating temperature and making the performance of the components better. At the same time, this design method can better isolate the acquisition circuit board 400 from the battery cell 200, preventing the acquisition circuit board 400 from coming into contact with the battery cell 200 and causing a short circuit.

[0054] In this embodiment, the acquisition circuit board 400 is fixed to the isolation board 300 by being snapped into the clamping groove 31 of the protrusion 30. The installation of the acquisition circuit board 400 does not require the assistance of other installation parts and installation equipment, and the assembly is convenient, which is beneficial to improving the assembly efficiency.

[0055] Please refer to Figure 4, in some embodiments, the acquisition circuit board 400 is also fixedly connected to the isolation board 300 by screws. Specifically, screw seats 40 are provided on one side of the isolation board 300 facing the acquisition circuit board 400. The number of screw seats 40 is two, and the two screw seats 40 are arranged oppositely at intervals along the Y-axis direction. The acquisition circuit board 400 is mounted on the two screw seats 40 by two screws. In this embodiment, the acquisition circuit board 400 is fixedly connected to the isolation board 300 by means of snap connection and threaded connection, and the connection is more stable.

[0056] In some other embodiments, the acquisition circuit board 400 can also be fixed to the isolation board 300 only by screws.

[0057] An embodiment of the present application also provides a battery pack, including a box body and a plurality of battery modules 1000 provided in the embodiments of the present application. The box body is provided with a receiving cavity, and the plurality of battery modules 1000 are installed in the receiving cavity.

[0058] An embodiment of the present application also provides a vehicle, including the battery pack provided in the embodiments of the present application, and the battery pack powers the vehicle.

[0059] The embodiments of the present application have been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application.

Claims

1. A battery module, characterized in that: It comprises a shell, a battery cell, a collection circuit board and a terminal; the shell is provided with a receiving cavity, the battery cell and the collection circuit board are both arranged in the receiving cavity, and the collection circuit board is electrically connected to the pole of the battery cell; The terminal is a female socket or a male socket, and the terminal is arranged on the acquisition circuit board and is electrically connected to the acquisition circuit board; the shell is provided with a through hole, and at least part of the terminal extends out of the receiving cavity from the through hole.

2. The battery module according to claim 1, characterized in that: A sealing ring is arranged between the outer peripheral surface of the terminal and the hole wall surface of the through hole.

3. The battery module according to claim 1 or 2, characterized in that: The acquisition circuit board is electrically connected to the pole of the battery cell through the FPC.

4. The battery module according to claim 1 or 2, characterized in that: It also includes an isolation plate, which is arranged in the receiving cavity; the isolation plate is located between the collection circuit board and the battery cell; in the direction where the battery cell points to the collection circuit board, the projection of the isolation plate covers the projection of the collection circuit board.

5. The battery module according to claim 4, characterized in that: In the direction in which the battery core points to the collecting circuit board, the collecting circuit board is spaced apart from and opposite to the isolation board.

6. The battery module according to claim 5, characterized in that: The isolation plate is provided with a protrusion on one side facing the collection circuit board, and the protrusion is provided with a clamping groove, and the collection circuit board is clamped into the clamping groove.

7. The battery module according to claim 6, characterized in that: The acquisition circuit board is also fixedly connected to the isolation plate by screws.

8. The battery module according to claim 1 or 2, characterized in that: The shell includes an outer shell and a cover plate. Along the height direction of the battery module, the outer shell is provided with a first sub-cavity, and the cover plate is provided with a second sub-cavity; the cover plate closes the opening of the first sub-cavity, and the first sub-cavity and the second sub-cavity are connected to form the accommodating cavity; the battery cell is located in the first sub-cavity, and the collection circuit board is located in the second sub-cavity; the through hole is provided on the cover plate.

9. A battery pack, characterized in that: The invention comprises a box body and a plurality of battery modules according to any one of claims 1 to 8, wherein the box body is provided with a receiving cavity, and the plurality of battery modules are installed in the receiving cavity.

10. A vehicle, characterized in that: A battery pack comprising the battery pack of claim 9.

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