CN212810471U

CN212810471U - Battery module

Info

Publication number: CN212810471U
Application number: CN202021243322.6U
Authority: CN
Inventors: 宋娜; 陈文会; 谭晶; 谭亮稳
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-03-26
Anticipated expiration: 2030-06-29

Abstract

The utility model discloses a battery module, a serial communication port, battery module includes: battery array, battery support and sampling piece. Wherein one side of the battery bracket, which is far away from the battery array, is provided with a plurality of accommodating grooves; the sampling piece is provided with a plurality of temperature sampling parts, and the temperature sampling parts are correspondingly accommodated in the accommodating groove; the inner wall of the accommodating groove is provided with a limiting part, and the limiting part can be abutted against the temperature collection part so as to enable the temperature collection part to be in surface contact with the battery cell corresponding to the temperature collection part. Set up spacing portion through setting up the holding tank and utilizing on the holding tank inner wall, and then the restriction is adopted temperature portion and is set up the position, can realize adopting temperature portion and electric core contact to prevent to adopt temperature portion to drop from the holding tank, guarantee to adopt the fixed reliability of temperature portion in the holding tank. The structure has simple design, simple and convenient installation and high reliability.

Description

Battery module

Technical Field

The utility model relates to a battery technology field, in particular to battery module.

Background

In prior art, the design usually has the temperature point of gathering in the battery module for detect the actual temperature condition of charge-discharge in-process electric core, realize that BMS and thermal management system are to the monitoring and regulation and control of electric core temperature, guarantee that electric core remains throughout at suitable temperature range in the operation process. The temperature point of adopting of traditional battery module bonds on the surface of electric core through heat-conducting glue usually, need adopt the top installation spacing support of temperature point in order to prevent that heat-conducting glue from adopting the temperature point when not dry to take place to remove moreover, and this kind of structural design also will increase the equipment process of battery module, leads to the structure of battery module complicated, the assembling process is loaded down with trivial details.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: to the problems of complex structural design, complex assembly process and more assembly procedures of the temperature collection point in the existing battery module, the battery module is provided.

In order to solve the technical problem, the utility model provides a battery module, a serial communication port, battery module includes:

the battery array comprises a plurality of battery cores which are sequentially arranged;

a battery holder disposed at one side of the battery array; a plurality of accommodating grooves are formed in one side, away from the battery array, of the battery bracket; and the number of the first and second groups,

the battery support is provided with a battery array, the battery support is provided with a holding groove, the battery array is arranged on the holding groove, the battery support is arranged on one side of the battery array, the sampling piece is provided with a plurality of temperature sampling parts, the temperature sampling parts are correspondingly held in the holding groove, the inner wall of the holding groove is provided with a limiting part, and the limiting part can be abutted against the temperature sampling parts, so that the temperature sampling parts are in surface contact with the battery core corresponding to the temperature sampling parts.

In some embodiments, a plurality of protrusions are arranged on one side of the battery support, which faces away from the battery array, each protrusion comprises a side wall and a top wall, the side wall is connected with the battery support, the top wall is connected with the side wall, the top wall and the side wall enclose to form the accommodating groove, and the side wall is provided with an opening so that the temperature collecting part is inserted into the accommodating groove; the top wall is provided with the limiting part.

In some embodiments, the stopper is an elastic member.

In some embodiments, in the direction from the top wall to the cell, the distance between the limiting portion and the cell is H1, and the thickness of the temperature collecting portion is H2, where H1< H2.

In some embodiments, the sampling portion includes a sampling point and an elastic cantilever, the temperature collection point is disposed on a side of the cantilever away from the battery array, and the limiting portion can press the temperature collection point, so that the cantilever contacts with a surface of the battery cell corresponding to the cantilever.

In some embodiments, the sampling member comprises a sampling body, one end of the cantilever is connected with the sampling body, and the other end of the cantilever is connected with the temperature collection point.

In some embodiments, the limiting part is adhered to the inner wall of the accommodating groove; the sampling point is pasted to one side of the cantilever, which is far away from the battery array.

In some embodiments, the battery support further has a plurality of electrode lead-out holes through which the electrode terminals of the cells are exposed out of the battery support; the battery module further comprises a plurality of electrode connecting sheets, and the electrode connecting sheets are connected with electrode terminals of two adjacent battery cells exposed out of the battery bracket through the electrode leading-out holes.

In some embodiments, the sampling member further includes a voltage sampling terminal, and the voltage sampling terminal is connected to the electrode connecting sheet and is configured to collect the cell voltage information.

In some embodiments, the sampling body, the cantilever, and the voltage sampling terminal are integrally formed.

According to the utility model discloses a beneficial effect does: through setting up the holding tank and utilizing and set up spacing portion on the holding tank inner wall in this application, and then the restriction is adopted temperature portion and is set up the position, can realize adopting temperature portion and electric core contact to prevent to adopt temperature portion to drop from holding the inslot, guarantee to adopt the fixed reliability of temperature portion in the holding tank. The structure has simple design, simple and convenient installation and high reliability.

Drawings

Fig. 1 is a schematic view of a battery module according to an embodiment of the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic view of a receiving groove according to an embodiment of the present invention.

Fig. 4 is a schematic view of the cooperation between the temperature collecting part and the accommodating groove according to an embodiment of the present invention.

Fig. 5 is a schematic view illustrating an assembly process of a battery module according to an embodiment of the present invention.

The reference numerals in the specification are as follows:

1. a battery module;

10. an array of batteries; 11. An electrode terminal;

20. a battery holder; 21. accommodating grooves; 22. a limiting part; 23. A protrusion; 24. a side wall; 25. a top wall; 26. an opening; 27. an electrode lead-out hole;

30. sampling; 31. a temperature collection part; 32. temperature collection point; 33. a cantilever; 34. a sampling body; 35. a voltage sampling terminal; 36. and an electrode connecting sheet.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

For convenience of description in the present application, the direction from the top wall 25 of the housing groove 21 to the battery cell is referred to as a height direction (Z direction), and the thickness direction of the temperature sensing portion 31 is also referred to as a height direction (Z direction).

As shown in fig. 1, the utility model discloses a battery module 1, this battery module 1 includes battery array 10, battery support 20 and sampling piece 30. The battery array 10 includes a plurality of electric cores in this battery module 1, and a plurality of electric cores arrange the setting in proper order. In the battery module 1 shown in fig. 1, after a plurality of battery cells are sequentially arranged, that is, after a plurality of battery cells are arranged to form the battery array 10, end plates and side plates are arranged around the battery array 10. The battery holder 20 is disposed at one side of the battery array 10; further, the battery holder 20 is disposed at one side of the battery array 10 in the height direction. Still further, the battery holder 20 is disposed at a side where the electrode terminals 11 are disposed in the battery array 10. The battery holder 20 is used for protecting the battery core and insulating, and the battery holder 20 also carries sampling devices such as the sampling piece 30 and other communication elements. The battery holder 20 has a plurality of receiving grooves 21 on a side facing away from the battery array 10 (the embodiment of the present application is described by taking only one receiving groove 21 of the battery holder 20 as an example, and the embodiment of the battery holder 20 having a plurality of receiving grooves 21 is similar to the embodiment of the battery holder 20 having only one receiving groove 21, and will not be described in detail herein). A temperature measuring cavity is arranged between the accommodating groove 21 and the battery core. The battery holder 20 further has a plurality of electrode lead-out holes 27, the number of the electrode lead-out holes 27 being set to correspond to the number of the cell electrode terminals 11, and the cell electrode terminals 11 are exposed from the battery holder 20 through the electrode lead-out holes 27. The sampling piece 30 is arranged on one side of the battery support 20 departing from the battery array 10, and acquires relevant information of the battery core through the electrode leading-out hole 27 and the accommodating groove 21 and the like arranged on the battery support 20. The sampling member 30 has a plurality of temperature sampling portions 31 (in the embodiment of the present application, only one temperature sampling portion 31 of the sampling member 30 is taken as an example for explanation, and the embodiment of the sampling member 30 having a plurality of temperature sampling portions 31 is similar to the embodiment of the sampling member 30 having only one temperature sampling portion 31, and will not be described in detail in the present application). The temperature collecting part 31 is correspondingly accommodated in the accommodating groove 21. Further, the temperature acquisition part 31 is located in the temperature measurement cavity between the accommodating groove 21 and the battery cell and contacts the battery cell. The sampling member 30 further includes a plurality of electrode connection pads 36 and a plurality of voltage sampling terminals 35. The number of the plurality of electrode connecting pieces 36 is half of the number of the cell electrode terminals 11, and the electrode connecting pieces 36 connect the electrode terminals 11 of two adjacent cells exposed out of the battery bracket 20 through the electrode lead-out holes 27. The connection of the electrode connecting sheets 36 realizes the series connection or parallel connection or series-parallel connection between a plurality of battery cells in the battery module 1. The number of the voltage sampling terminals 35 corresponds to the number of the electrode connecting pieces 36. The voltage sampling terminal 35 is connected to the electrode connecting piece 36. Specifically, the voltage sampling terminal 35 has one end connected to the electrode connecting piece 36 and the other end connected to the sampling piece 30 (the sampling piece 30 is specifically referred to as a body portion of the sampling piece 30). The voltage sampling terminal 35 acquires information on the cell, such as voltage information and current information, by connecting the electrode connecting piece 36. The inner wall of the accommodating groove 21 is provided with a limiting part 22, and the limiting part 22 can press the temperature collection part 31, so that the temperature collection part 31 is in surface contact with the battery cell corresponding to the temperature collection part 31. In this application, through setting up holding tank 21 and utilizing the temperature measurement chamber between holding tank 21 and the electric core to utilize spacing portion 22 to support and press temperature portion 31, can realize the contact of temperature portion 31 and electric core, and then improve the measurement accuracy of sampling piece 30, and reaction electric core temperature that can be abundant and reduce the influence of all the other interference factors, and also reduced the equipment process of battery module sampling piece 30, make the assembling process simple and convenient more.

In an embodiment of the present application, as shown in fig. 2 to 3, a plurality of protrusions 2323 are disposed on a side of the battery holder 20 facing away from the battery array 10, each protrusion 2323 includes a side wall 24 and a top wall 25, the side wall 24 is connected to the battery holder 20, the top wall 25 is connected to the side wall 24, the top wall 25 and the side wall 24 enclose to form a receiving groove 21, and an opening 26 is further disposed on the side wall 24, so that the temperature collecting portion 31 is inserted into the receiving groove 21. Further, in an embodiment of the present application, the accommodating groove 21 is a protrusion 2323 with an opening 26 on one surface, and the temperature collecting part 31 is disposed in the temperature measuring cavity through the opening 26. In another embodiment of the present application, the accommodating groove 21 may also be a protrusion 2323 with two openings 26, the entire temperature measuring cavity penetrates through the accommodating groove 21 through the opening 26, and the temperature collecting part 31 is disposed in the accommodating groove 21 through any one of the openings 26.

In this application, be equipped with spacing portion 22 on the holding tank 21 inner wall, spacing portion 22 can support and press adopt temperature portion 31, so that adopt temperature portion 31 with adopt temperature portion 31 to correspond the surface contact of electricity core. The stopper 22 is an elastic member that can be elastically deformed when a force is applied to the stopper 22 to restrict the force.

In one embodiment, as shown in fig. 3, the position-limiting part 22 is disposed on the top wall 24 of the accommodating groove 21.

In other embodiments, the position-limiting part 22 is disposed on the sidewall 25 of the accommodating groove 21.

In the embodiment of the present application, as shown in fig. 3 to 4, a limiting portion 22 located on an inner wall of the accommodating groove 21 is further provided in the temperature measuring cavity between the accommodating groove 21 and the electric core corresponding to the accommodating groove 21. Further, a gap is formed between the limiting part 22 and the battery cell. Which is a partial area within the receiving groove 21. The length of this gap in the height direction (Z) is H1, in other words, the distance between the stopper 22 and the cell in the direction from the top wall 25 to the cell is H1. The sum of the lengths of the temperature generating portion 31 in the height direction (Z) is H2, in other words, the thickness of the temperature generating portion 31 is H2. The length of H1 is less than that of H2, namely the sum of the length of the temperature collection piece and the part of the temperature collection part 31 in the temperature measurement cavity along the height direction (Z) is less than the length of the gap along the height direction (Z). However, the length of the temperature measuring cavity in the height direction (Z) is greater than the sum of the lengths of the temperature collecting parts 31 in the height direction (Z), so as to ensure that the temperature collecting parts 31 can be accommodated in the temperature measuring cavity. The purpose that the sum of the length of the temperature collection part 31 in the height direction (Z) is smaller than the length of the gap in the height direction (Z) is to apply a force to the temperature collection part 31 when the temperature collection part 31 is located in the accommodating groove 21, so that the temperature collection part 31 can be more reliably contacted with the surface of the battery cell, the measurement accuracy is improved, the connection reliability of the temperature collection part 31 is also improved, and the assembly and the installation are facilitated.

Further, the material of the stopper 22 may be a soft material such as foam. The soft materials such as foam are selected to have good elastic capacity, and the structure of the temperature collecting part 31 is not damaged while force is applied to the temperature collecting part 31, so that the material is low in cost and simple and convenient to install. Specifically, the thickness of the initial state (unstressed) of the foam is L1. When the partial temperature collecting part 31 is attached to the surface of the battery core, the foam is compressed by the pressure of the temperature collecting part 31 at the moment because H1 is less than H2, and the thickness is compressed to be L2. Since the foam is soft, the internal structure of the temperature collecting part 31 is not damaged. The cotton bubble of atress compression has a power to electric core surface to adopting temperature portion 31, makes and adopts the stress to be retrained on temperature portion 31 direction of height (Z), is difficult for deviating from in holding tank 21, has guaranteed to adopt temperature portion 31 and the good laminating on electric core surface to it is effective to have guaranteed that the temperature sampling. The foam (the limiting part 22) is directly adhered to the inner wall surface of the accommodating groove 21 of the battery bracket 20 by one surface back adhesive. Further, the limiting portion 22 is attached to the top wall 25 of the accommodating groove 21. The foam and the battery support 20 can be integrally supplied, and can also be integrally adhered in the process of assembling the battery module 1.

In another embodiment, the position-limiting part 22 may also be a rigid member, i.e., the position-limiting part 22 has a certain degree of hardness and is not easily deformed. When spacing portion 22 is the hard piece, spacing portion 22 equals the thickness that is located the portion 31 of adopting the temperature of holding tank 21 to the clearance length between the electric core, and spacing portion 22 supports to press the portion 31 of adopting the temperature this moment to the messenger adopts the portion 31 contact electric core surface of temperature, and then has guaranteed to adopt the piece of adopting the temperature and has sampled terminal and the good laminating on electric core surface, thereby has guaranteed that the temperature sampling is effective.

In another embodiment, the accommodating groove 21 is not provided with the limiting portion 22, and the accommodating groove 21 is directly used for fixing the temperature collecting member and part of the temperature collecting portion 31. Specifically, in this embodiment of the application, the accommodating groove 21 may itself apply a force in the height direction (Z) to the temperature collection portion 31, so as to limit the movement of the temperature collection portion 31 in the height direction, thereby ensuring the temperature measurement accuracy of the temperature collection portion 31. Further, the accommodating groove 21 in this embodiment may be made of soft material such as rubber. Wherein the length of the temperature measuring cavity along the height direction is less than the sum of the lengths of the temperature collecting part 31 along the height direction (Z). Because holding tank 21 itself is rubber, therefore it possesses certain elastic capacity, will adopt warm portion 31 and set up in holding tank 21 time, holding tank 21 can wrap up and adopt warm portion 31 and exert the power on direction of height (Z) to adopting warm portion 31, makes to adopt to warm a direction of height (Z) on the atress retrained, is difficult for deviating from in holding tank 21, has guaranteed to adopt warm piece and the good laminating on sampling terminal and electric core surface to it is effective to have guaranteed that the temperature sampling.

In the present embodiment, as shown in fig. 1-2 and 4-5, the sampling member 30 includes a sampling body 34. The temperature sensing portion 31 includes a temperature sensing point 32 and a cantilever 33 having elasticity. The limiting part 22 can press against the temperature collection point 32, so that the cantilever 33 is in contact with the surface of the battery cell corresponding to the cantilever 33. The sampling main body 34 is connected to the temperature collection unit 31 via the cantilever 33. The temperature collecting point 32 is arranged on the side of the cantilever 33 facing away from the battery array 10. One end of a cantilever 33 in the temperature collection part 31 is connected with the sampling main body 34, and one side of the other end, which is far away from the battery array 10, is provided with a temperature collection point 32. Specifically, the cantilever 33 in the temperature collecting part 31 is partially located in the accommodating groove 21, and a side of the cantilever 33 located in the accommodating groove 21 facing away from the battery array 10 is provided with a temperature collecting point 32. One end of the cantilever 33 is connected to the sampling body 34, and the other end is in contact with the cell. And the end of the cantilever 33 contacting the cell is provided with a temperature collection point 32 at the side facing away from the cell.

Further, one end of the cantilever 33 disposed in the accommodating groove 21 directly contacts the battery cell, and one end of the cantilever 33 connected to the sampling body 34 is far away from the battery cell. Specifically, one end of the cantilever 33 contacting the battery cell is gradually away from the battery cell, and the other end of the cantilever 33 relatively located in the temperature measuring cavity is away from the battery cell, so that the whole temperature collection portion 31 has a curved shape. The purpose of the above setting is: because the one end that adopts temperature portion 31 to connect sampling piece 30 is bigger than the one end of contact electric core along length on direction of height (Z), and then the portion 31 of adopting temperature that is located holding tank 21 can more remove to keeping away from electric core direction, consequently the portion 31 of adopting temperature that is located holding tank 21 can exert one along direction of height (Z) and deviate from the ascending power of electric core direction to spacing portion 22, and then make the portion 31 of adopting temperature be more close to spacing portion 22 that sets up on holding tank 21 or the support draw-in groove, and then through the cooperation of the spacing portion 22 that sets up on the portion 31 of adopting temperature and holding tank 21 or the support draw-in groove, further restrict the portion 31 of adopting temperature, thereby improve the temperature measurement degree of accuracy, make the piece of adopting temperature be difficult for deviating from in holding tank 21, the good laminating on the piece of adopting temperature and the portion 31 of adopting temperature and electric core surface has been.

Further, the temperature collection point 32 is a component for collecting temperature such as a temperature sensor.

Further, the cantilever 33 is integrally formed with the sampling body 34 to form the sampling member 30.

In the embodiment of the present application, the limiting portion 22 is adhered to the inner wall of the accommodating groove 21; the sampling points 32 are affixed to the side of the cantilever 33 facing away from the battery array.

In the embodiment of the present application, the battery holder 20 further has a plurality of electrode lead-out holes 27, and the electrode terminals 11 of the battery cells are exposed out of the battery holder 20 through the electrode lead-out holes 27.

Further, the battery module 1 further includes a plurality of electrode connecting sheets 36, and the electrode connecting sheets 36 are connected to the electrode terminals 11 of two adjacent battery cells exposed out of the battery bracket 20 through the electrode leading-out holes 27.

Further, the sampling piece 30 further includes a voltage sampling terminal 35, and the connecting piece is connected to the electrode connecting piece and used for collecting the cell information.

In the embodiment of the present application, the voltage sampling terminal 35, the cantilever 33, and the sampling body 34 are integrally formed.

In the embodiment of the present application, the battery holder 20 is integrally formed to form the receiving groove 21.

In the embodiment of the present application, the battery holder 20 may be made of plastic, PP, or the like.

As shown in fig. 5, the assembly of the battery module 1 in the embodiment of the present application is schematically illustrated. In the module assembling process, the electrode connecting sheet 36, the sampling member 30 and the battery holder 20 are assembled into a whole, that is, the battery holder 20 is assembled into a unified battery holder (see fig. 5). Furthermore, the electrode connection room and the voltage sampling terminal 35 in the sampling piece 30 can be welded into a whole and placed in the battery bracket 20, or the electrode connection piece and the sampling piece 30 can be placed in the battery bracket 20 and then welded. When the sampling member 30 is mounted in the battery holder 20, the temperature generating portion 31 is inserted into the accommodation groove 21 from the side where the battery accommodation groove 21 is open (i.e., the opening 26). And then the integrated battery bracket 20 is matched with and fixed to the battery core.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. The utility model provides a battery module which characterized in that, battery module includes:

2. The battery module according to claim 1, wherein a plurality of protrusions are disposed on a side of the battery holder facing away from the battery array, each protrusion includes a side wall and a top wall, the side wall is connected to the battery holder, the top wall is connected to the side wall, the top wall and the side wall enclose the accommodating groove, and the side wall is provided with an opening so that the temperature collecting portion is inserted into the accommodating groove; the top wall is provided with the limiting part.

3. The battery module according to claim 2, wherein the stopper is an elastic member.

4. The battery module according to claim 3, wherein in the direction from the top wall to the cell, the distance between the limiting portion and the cell is H1, the thickness of the temperature collecting portion is H2, and H1< H2.

5. The battery module of claim 1, wherein the temperature collection portion comprises a temperature collection point and an elastic cantilever, the temperature collection point is arranged on one side of the cantilever, which is away from the battery array, and the limiting portion can press the temperature collection point, so that the cantilever is in contact with the surface of the battery core corresponding to the cantilever.

6. The battery module according to claim 5, wherein the sampling member comprises a sampling body, one end of the cantilever is connected with the sampling body, and the other end of the cantilever is connected with the temperature sampling point.

7. The battery module according to claim 5, wherein the stopper is adhered to the inner wall of the accommodating groove; the temperature collection point is adhered to one side of the cantilever, which is far away from the battery array.

8. The battery module according to claim 1, wherein the battery holder further has a plurality of electrode lead-out holes, and the electrode terminals of the battery cells are exposed out of the battery holder through the electrode lead-out holes;

the battery module further comprises a plurality of electrode connecting sheets, and the electrode connecting sheets are connected with electrode terminals of two adjacent battery cells exposed out of the battery bracket through the electrode leading-out holes.

9. The battery module of claim 8, wherein the sampling member further comprises a voltage sampling terminal, and the voltage sampling terminal is connected to the electrode connecting sheet and used for collecting the cell voltage information.

10. The battery module according to claim 6, wherein the sampling body is integrally formed with the cantilever.