Sampling assembly and battery module

Abstract

The utility model provides a sampling assembly and a battery module. The sampling assembly comprises a bracket, an FPC (Flexible Printed Circuit) board arranged on one side, deviating from a battery cell, of the bracket, and a temperature acquisition part, the FPC board is provided with a plurality of notches and a plurality of connecting parts in one-to-one correspondence with the notches, the connecting parts can be connected with the battery cells, and the temperature acquisition parts are arranged on the connecting parts; the support is provided with connecting holes exposed out of the notches and connecting pieces detachably connected in the connecting holes, and the connecting pieces can move downwards when being connected with the connecting holes so as to press the temperature collecting part on the connecting part. According to the sampling assembly disclosed by the utility model, the temperature acquisition part is pressed on the connecting part when the connecting piece moves downwards, so that the connection stability of the temperature acquisition part on the connecting part is favorably improved, the temperature acquisition part is not easy to separate, and the acquisition precision of the temperature acquisition part on the battery cell temperature is favorably improved; and the temperature acquisition part can be maintained conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to a sampling component. Meanwhile, the utility model also relates to a battery module provided with the sampling component. Background Art

[0002] The temperature collection point of traditional power battery pack modules is mostly the battery cell bus. The incoming temperature sensor is fixed on the bus by welding nickel sheets. The heat generated during charging and discharging of the battery cell is transferred to the bus. This method has slow local heat dissipation, resulting in low accuracy of temperature collection by the temperature sensor. Therefore, a collection solution is derived in which the temperature sensor directly collects the temperature of the battery cell.

[0003] At present, in the scheme of collecting the temperature of the battery cell through the temperature sensor, the temperature sensor is mostly fixed by local glue coating, or by overpressure injection molding bracket to fix the foam on the top of the temperature sensor. However, the glue coating method of fixing the temperature sensor has the risk of difficult control of the glue coating amount or sharp corners piercing the FPC after curing.

[0004] The method of fixing the temperature sensor with an injection molding bracket through the foam on the top has the problem of high injection molding cost and difficult tolerance control. In addition, the glue coating solution causes the temperature sensor to fall off easily when the battery module vibrates, affecting the temperature collection effect of the battery cell. Furthermore, whether it is the glue coating fixation or the injection molding bracket solution, the temperature sensor has the problem of poor convenience in disassembly and maintenance. Utility Model Content

[0005] In view of this, the utility model aims to provide a sampling assembly to solve the problem that the temperature collection part is easy to fall off and is inconvenient to maintain.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] A sampling assembly comprises a bracket, an FPC board arranged on a side of the bracket away from a battery cell, and a temperature collection part;

[0008] The FPC board is provided with a plurality of notches arranged at intervals along its length direction, and a plurality of connecting parts arranged one by one corresponding to the notches, and the connecting parts can be connected to the battery core;

[0009] The temperature collecting unit is disposed on the connecting unit and collects the temperature information of the battery cell through the connecting unit;

[0010] The bracket is provided with connecting holes exposed in each of the notches, and connecting pieces detachably connected to the connecting holes, and the connecting pieces can move downward when connected to the connecting holes to press the temperature collecting part onto the connecting part.

[0011] Furthermore, the connecting member is screwed to the connecting hole, and a locking portion is provided between the connecting member and the bracket to lock the two together.

[0012] Furthermore, the connecting member includes a connecting portion threadedly connected to the connecting hole, and an end portion disposed at the top of the connecting portion and radially protruding outwards;

[0013] The bracket is provided with an annular protrusion which is convexly arranged along the circumference of the connecting hole, and the locking portion is arranged between the end portion and the annular protrusion.

[0014] Furthermore, the locking portion includes a locking block provided on one of the end portion and the annular protrusion, and a locking groove provided on the other of the end portion and located on the movement path of the locking block;

[0015] The locking block can enter the locking groove as the connecting member rotates and be confined in the locking groove.

[0016] Furthermore, the top end of the annular protrusion has two oppositely disposed spiral first guide surfaces, and a finite position surface is formed between the same ends of the two first guide surfaces due to the height difference;

[0017] The end portion is provided with a second guide surface capable of abutting against the two first guide surfaces respectively, and a limited position matching surface is formed between the same ends of the two second guide surfaces due to the height difference;

[0018] The limiting surface can abut against the limiting matching surface to limit the rotation of the connecting member.

[0019] Furthermore, a locking mating block is provided on one side of one of the limiting surface and the limiting mating surface, and the locking block is provided on the other side of the two, and the locking groove is defined between the locking mating block and the limiting surface or the locking mating surface, and the locking block can pass over the locking mating block and be restricted in the locking groove.

[0020] Furthermore, one of the outer circumferential wall of the connecting portion and the inner circumferential wall of the connecting hole is provided with a spiral tooth, and the other one is provided with a spiral groove which is threadedly connected with the spiral tooth.

[0021] Further, the connecting portion includes a connecting arm having one end connected to the notch, and the other end of the connecting arm has a mounting portion located below the notch and connected to the battery cell, and the temperature collecting portion is disposed on the top of the mounting portion; and / or,

[0022] A through cavity is arranged in the connecting piece, and an operating panel is connected to the connecting piece to divide the top opening of the cavity into two parts.

[0023] Furthermore, an elastic body is provided on the top of the temperature collecting part, and the connecting member presses the temperature collecting part onto the connecting part through the elastic body.

[0024] Compared with the prior art, the utility model has the following advantages:

[0025] The sampling component described in the utility model is conducive to exposing the connecting hole by setting the notch, so that the connecting piece is easy to install in the connecting hole, and when the connecting piece moves downward, the temperature collecting part is pressed down by the elastic body, so as to improve the connection stability of the temperature collecting part on the connecting part, thereby preventing the temperature collecting part from falling off during vibration, which is conducive to improving the temperature collecting part's collection accuracy of the battery cell temperature, and through the detachable connection of the connecting piece in the connecting hole, the temperature collecting part can be maintained after the connecting piece is removed, which is conducive to improving the convenience of maintaining the temperature collecting part.

[0026] In addition, the connection piece is screwed to the connection hole for easy operation. By providing a locking portion that locks the installed connection piece and the bracket together, it is helpful to prevent the connection piece from slipping out of the connection hole, thereby improving the connection firmness of the connection piece. The connection part on the connection piece is screwed to the connection hole, and the locking portion is provided between the end portion and the annular protrusion on the bracket, which is easy to arrange and implement, and has a good connection effect. The locking block and the locking groove cooperate to achieve a good locking effect. The first guide surface abuts against the corresponding second guide surface, and both are spiral, which is beneficial to improve the downward pressure stability of the connection piece, thereby improving the downward pressure effect on the temperature collection part; the rotation of the connection piece is limited by the abutment of the limit surface and the limit matching surface, which is beneficial to determine that the connection piece is installed in place.

[0027] In addition, a locking groove is formed by setting a locking matching block 6, and it is helpful to prevent the locking block in the locked state from falling out of the locking groove. The screw connection effect of the spiral teeth and the spiral groove is good, and it is easy to arrange and implement. The structure of the connecting arm is simple and easy to arrange and implement. The installation part is conducive to the installation of the temperature collection part, and it is also conducive to the connection between the connecting arm and the battery cell; the cavity set in the connecting piece is conducive to reducing weight and production costs, and the operation panel set on the connecting piece is not only convenient for handheld operation of the connecting piece, but also conducive to improving the structural strength of the connecting piece.

[0028] In addition, another object of the present invention is to provide a battery module, wherein the sampling assembly as described above and a plurality of bus bars are disposed in the battery module, and at least part of the bus bars are disposed on the bracket.

[0029] The battery module of the utility model is beneficial to improving the temperature collection effect of the battery module and the integration of the structure by setting the above sampling component, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0031] Figure 1 It is a structural schematic diagram of a part of the structure of the sampling assembly according to an embodiment of the utility model at one viewing angle;

[0032] Figure 2 It is a structural schematic diagram of a part of the structure of the sampling assembly according to an embodiment of the utility model at another viewing angle;

[0033] Figure 3 It is a partial structural schematic diagram of the bracket described in the embodiment of the utility model;

[0034] Figure 4 It is a partial structural schematic diagram of the sampling assembly according to an embodiment of the utility model;

[0035] Figure 5 It is a schematic structural diagram of the annular protrusion described in an embodiment of the utility model at one viewing angle;

[0036] Figure 6 It is a schematic structural diagram of the annular protrusion described in the embodiment of the utility model at another viewing angle;

[0037] Figure 7 It is a schematic structural diagram of the connecting piece described in an embodiment of the utility model.

[0038] Description of reference numerals:

[0039] 1. Bracket; 2. Connector; 3. FPC board; 4. Temperature collection unit; 5. Busbar;

[0040] 101, positioning column; 102, connecting hole; 103, annular protrusion; 1031, first guide surface; 1032, limiting surface; 1033, locking matching block; 1034, locking groove; 1035, spiral groove; 104, through hole;

[0041] 201, connecting part; 2011, spiral teeth; 202, end part; 2021, limiting matching surface; 2022, locking block; 2023, second guide surface; 203, operation panel;

[0042] 301, connecting arm; 3011, vertical portion; 3012, mounting portion; 302, notch;

[0043] 401, elastomer;

[0044] 501. Nickel sheet. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0046] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first", "second", etc., they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0048] This embodiment relates to a sampling assembly, comprising a bracket 1, an FPC board 3 arranged on the side of the bracket 1 away from the battery cell, and a temperature collection unit 4. The FPC board 3 is provided with a plurality of notches 302 arranged at intervals along its length direction, and a plurality of connecting parts arranged one-to-one corresponding to the notches 302, and the connecting parts can be connected to the battery cell.

[0049] The temperature collection unit 4 is disposed on the connection unit and collects the temperature information of the battery cell through the connection unit. The bracket 1 is provided with connection holes 102 exposed in each notch 302, and a connection member 2 detachably connected to the connection hole 102, and the connection member 2 can move downward when connected to the connection hole 102, thereby pressing the temperature collection unit against the connection unit.

[0050] The sampling assembly of this embodiment is convenient for exposing the connection hole 102 by setting the notch 302, so as to facilitate the installation of the connector 2 in the connection hole 102. When the connector 2 moves downward, the temperature collection part 4 is pressed against the connection part, which is convenient for preventing the temperature collection part 4 from falling out during the vibration process, thereby facilitating the connection stability of the temperature collection part 4 on the connection part and improving the accuracy of the temperature collection part 4 in collecting the battery cell temperature. In addition, through the detachable connection of the connector 2 in the connection hole 102, the temperature collection part 4 can be maintained after the connector 2 is removed, which is convenient for improving the maintenance of the temperature collection part 4.

[0051] Based on the above overall introduction, an exemplary structure of the sampling component in this embodiment is as follows: Figure 1 and Figure 2 As shown in FIG. 1 , in order to highlight the structure at the connection hole 102, only part of the structure of the bracket 1 is shown in the figure. Figure 1As shown in , the bracket 1 is plate-shaped and is disposed toward the battery cell. Relative to the battery cell, the FPC board 3 is connected to the other side of the bracket 1 and is located on one side of the bracket 1. In this embodiment, the number of the notches 302 is preferably 3 or 4, and of course, it can be adaptively increased or decreased according to the use requirements.

[0052] The connection part in this embodiment includes a connection arm 301 with one end connected to the notch, and the other end of the connection arm 301 has a mounting portion 3012 located below the notch 302 and connected to the battery cell, and the temperature collection part 4 is arranged on the top of the mounting portion 3012 .

[0053] In terms of specific structure, Figure 4 As shown in the figure, the connecting arm 301 in this embodiment is roughly in an "L" shape, wherein the horizontal portion of the connecting arm 301 is the above-mentioned mounting portion 3012, and the vertical portion 3011 of the connecting arm 301 extends downward and is tilted to ensure that the mounting portion 3012 is arranged on the other side of the bracket 1 relative to the notch 302 and is spaced below the notch 302. Here, the connecting arm 301 has a simple structure and is easy to process and form.

[0054] To facilitate the installation of the connecting arm 301, the top of the connecting arm 301 is connected to the edge of one side of the notch 302, and a through hole 104 is provided on the bracket 1 for the connecting arm 301 to pass through. The mounting portion 3012 in the connecting arm 301 is welded to the battery cell, and the temperature collection unit 4 provided on the mounting portion 3012 is connected to the battery cell through the mounting portion 3012 and collects the temperature of the battery cell, which is conducive to improving the collection accuracy.

[0055] As a preferred embodiment, the connector 2 is screwed to the connection hole 102, and a locking portion for locking the connector 2 and the bracket 1 is provided between the connector 2 and the bracket 1. Here, the connector 2 is screwed to the connection hole 102 for easy operation, and by providing a locking portion for locking the connector 2 and the bracket 1 installed in place, it is helpful to prevent the connector 2 from falling out of the connection hole 102, thereby improving the connection firmness of the connector 2.

[0056] In terms of specific structure, Figure 4 and Figure 7 As shown in the figure, the connector 2 includes a connecting portion 201 that is threadedly connected to the connecting hole 102, and an end portion 202 that is disposed at the top of the connecting portion 201 and radially protrudes outward. The bracket 1 is provided with an annular protrusion 103 that is convexly disposed along the circumference of the connecting hole 102, and the locking portion is disposed between the end portion 202 and the annular protrusion 103. The connector 2 presses down the temperature collection portion 4 through the bottom end of the connecting portion 201. Here, while the connecting portion 201 of the connector 2 is connected to the connecting hole 102, it is also convenient to lock the end portion 202 on the annular protrusion 103, thereby improving the installation reliability of the connection to the bracket 1.

[0057] Among them, combined Figure 5 and Figure 6 As shown in , the outer peripheral wall of the connecting part 201 is provided with a spiral tooth 2011, and the inner peripheral wall of the connecting hole 102 is provided with a spiral groove 1035 which is screwed and matched with the spiral tooth 2011. The connecting member 2 can be installed in the connecting hole 102 by screwing the spiral tooth 2011 into the spiral groove 1035. Here, the screw connection effect of the spiral tooth 2011 and the spiral groove 1035 is good, and it is easy to arrange and implement. At the same time, it is also beneficial to improve the stability of the connecting member 2 in the downward movement, thereby improving the downward pressing effect of the connecting part 201 on the temperature collecting part 4.

[0058] It is understandable that a spiral groove 1035 may be provided on the outer peripheral wall of the connecting portion 201 and a spiral tooth 2011 may be provided on the inner peripheral wall of the connecting hole 102 , which also facilitates the connection between the connecting portion 201 and the connecting hole 102 .

[0059] As a preferred embodiment, the locking portion includes a locking block 2022 provided on the end portion 202, and a locking groove 1034 provided on the annular protrusion 103 and located on the movement path of the locking block 2022. The locking block 2022 can enter the locking groove 1034 as the connecting member 2 rotates, and is confined in the locking groove 1034. The locking block 2022 and the locking groove 1034 cooperate to achieve a good locking effect.

[0060] In terms of specific structure, Figure 5 and Figure 6 As shown in , the top of the annular protrusion 103 has two oppositely arranged spiral first guide surfaces 1031, and the same ends of the two first guide surfaces 1031 form a limited position surface 1032 due to the height difference. The end portion 202 is provided with a second guide surface 2023 that can abut against the two first guide surfaces 1031 respectively, and the same ends of the two second guide surfaces 2023 form a limited position matching surface 2021 due to the height difference. Among them, the limiting surface 1032 can abut against the limiting matching surface 2021 to limit the rotation of the connecting member 2.

[0061] In this embodiment, as the helical teeth 2011 in the connecting member 2 rotate in the spiral groove 1035, the second guide surface 2023 can abut against the corresponding first guide surface 1031, and under the guidance of the first guide surface 1031, the limiting matching surface 2021 abuts against the corresponding limiting surface 1032. Here, the abutting and matching of the first guide surface 1031 and the second guide surface 2023 is conducive to further improving the stability of the connecting member 2 in the downward movement, thereby enhancing the downward pressing effect of the connecting part 201 on the temperature collection part 4, and preventing the connecting member 2 from crushing the temperature collection part 4.

[0062] As a preferred example, Figure 5 , Figure 6 as well as Figure 7 As shown in , a locking matching block 1033 is provided on one side of the limiting surface 1032, and a locking groove 1034 is defined between the locking matching block 1033 and the limiting surface 1032. The locking block 2022 is provided on one side of the limiting matching surface 2021, and can pass over the locking matching block 1033 and be restricted in the locking groove 1034. Here, by providing the locking matching block 1033, it is beneficial to form the anti-locking groove 1034 and prevent the locking block 2022 from coming out, thereby improving the installation reliability of the connector 2 on the bracket 1.

[0063] In this embodiment, a locking matching block 1033 is provided on one side of each limiting surface 1032, and the locking blocks 2022 are respectively provided on one side of the limiting matching surface 2021. In order to enhance the effect of the locking block 2022 passing over the locking matching block 1033, the outer peripheral walls of the locking block 2022 and the locking matching block 1033 in this embodiment are both arc-shaped. In specific implementation, the corners of the locking block 2022 and the locking matching block 1033 can be rounded.

[0064] It should be noted that, in this embodiment, the locking matching block 1033 can also be arranged on one side of the limiting matching surface 2021, and the locking block 2022 can be arranged on one side of the limiting surface 1032, and the locking groove 1034 is formed between the locking matching block 1033 and the limiting matching surface 2021. In this case, the locking block 2022 can also pass over the locking matching block 1033 and be locked in the locking groove 1034.

[0065] In addition, in this embodiment, Figure 7 As shown in , a cavity is provided in the connector 2, and an operating panel 203 is connected to the connector 2, which divides the top opening of the cavity into two parts. Here, by providing the cavity, it is beneficial to reduce the weight and production cost of the connector 2. The operating panel 203 is in the shape of an "I", and its structure is simple, which is convenient for processing and plugging. In addition, by providing the operating panel 203, it is convenient to install and disassemble the connector 2 by hand when the space of the whole package is small, thereby improving the convenience of operating the connector 2. At the same time, the operating panel 203 can also serve as a reinforcing structure, thereby improving the strength of the temperature sensing fixed cover and preventing the connector 2 from locally breaking during use and disassembly.

[0066] As a preferred implementation, the temperature acquisition unit 4 in this embodiment includes a temperature sensor, which is covered with an epoxy board, and the temperature sensor is connected to the mounting portion 3012 through the epoxy board. The epoxy board here can protect the temperature sensor and has good thermal conductivity, thereby facilitating the improvement of the temperature sensor's temperature acquisition accuracy.

[0067] In this embodiment, an elastomer 401 is provided on the top of the temperature collection part 4, and the connector 2 presses the temperature collection part 4 onto the connection part through the elastomer 401. In specific implementation, the elastomer 401 is connected to the epoxy board. The elastomer 401 in this embodiment can be used to prevent the connector 2 from over-pressing the temperature collection part 4. Preferably, the elastomer 401 is foam, which is connected to the top of the epoxy board by bonding. For example, the elastomer 401 is PU foam, etc. The structure of the foam here is simple, which is convenient for installation on the temperature collection part 4, and the cost of the foam is low. When checking the temperature collection part 4, the foam can be directly torn off.

[0068] In addition, the connector 2 in this embodiment can be made by injection molding, using high-strength materials such as PBT+GF, and the bracket 1 can be made by vacuum forming, for example, using materials with good toughness such as PC, and the color can be set to black.

[0069] In this embodiment, when the connector 2 needs to be installed, the connector 2 is held by the operating panel 203 and rotated, and the connector 2 can move downward while rotating under the spiral cooperation of the spiral teeth 2011 and the spiral grooves 1035. As the connecting portion 201 on the connector 2 abuts against the elastic body 401, the elastic body 401 can be pressed downward, and the elastic body 401 will apply an upward rebound force to the connecting portion 201, and the rebound force can be offset by the friction between the teeth and grooves.

[0070] As the first guide surface 1031 abuts against the corresponding guide surface, the locking block 2022 passes over the locking matching block 1033 and enters the locking groove 1034, with a slight "snap" sound, reminding the operator that the connector 2 has been installed in place. At this time, the locking block 2022 and the locking groove 1034 cooperate to ensure that the connector 2 cannot move relative to the bracket 1, thereby ensuring that the connector 2 will not loosen or slip during use.

[0071] When the connector 2 needs to be removed, the connector 2 is rotated in the opposite direction so that the locking block 2022 again passes over the locking matching block 1033 and escapes from the locking groove 1034. Then, the connector 2 is further screwed to remove the connector 2 from the connecting hole 102, and the temperature collecting part 4 can be inspected and maintained.

[0072] In addition, the present embodiment also relates to a battery module, in which the sampling assembly as described above and a plurality of busbars 5 are provided, and at least part of the busbars 5 are provided on the side of the bracket 1 facing the battery cell. Preferably, as shown in the figure, the FPC board 3 is connected to each busbar 5 respectively, and the FPC board 3 is specifically connected to the corresponding busbar 5 through the nickel sheet 501. Here, the plurality of busbars 5 are all provided on the bracket 1.

[0073] In order to improve the installation efficiency of the busbar 5 on the bracket 1, two positioning posts 101 corresponding to each busbar 5 are provided on the bracket 1, and positioning holes for inserting each positioning post 101 are provided on the busbar 5. The positioning posts 101 and the positioning holes have simple structures, are easy to process and form, and have good positioning effects.

[0074] The battery module of this embodiment is beneficial to improving the temperature collection effect of the battery module and the integration of the structure by setting the above sampling component, and has good practicality.

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

Claims

1. A sampling assembly, characterized in that: It includes a bracket, an FPC board arranged on the side of the bracket away from the battery cell, and a temperature collection part; The FPC board is provided with a plurality of notches arranged at intervals along its length direction, and a plurality of connecting parts arranged one by one corresponding to the notches, and the connecting parts can be connected to the battery core; The temperature collecting unit is disposed on the connecting unit and collects the temperature information of the battery cell through the connecting unit; The bracket is provided with connecting holes exposed in each of the notches, and connecting pieces detachably connected to the connecting holes, and the connecting pieces can move downward when connected to the connecting holes to press the temperature collecting part onto the connecting part.

2. The sampling assembly according to claim 1, characterized in that: The connecting piece is screwed to the connecting hole, and a locking portion for locking the connecting piece and the bracket together is provided between the connecting piece and the bracket.

3. The sampling assembly according to claim 2, characterized in that: The connecting member comprises a connecting portion which is threadedly connected to the connecting hole, and an end portion which is arranged at the top of the connecting portion and radially protrudes outwards; The bracket is provided with an annular protrusion which is convexly arranged along the circumference of the connecting hole, and the locking portion is arranged between the end portion and the annular protrusion.

4. The sampling assembly according to claim 3, characterized in that: The locking portion includes a locking block provided on one of the end portion and the annular protrusion, and a locking groove provided on the other of the end portion and located on the moving path of the locking block; The locking block can enter the locking groove as the connecting member rotates and be confined in the locking groove.

5. The sampling assembly according to claim 4, characterized in that: The top end of the annular protrusion has two oppositely disposed spiral first guide surfaces, and a limited position surface is formed between the same ends of the two first guide surfaces due to the height difference; The end portion is provided with a second guide surface capable of abutting against the two first guide surfaces respectively, and a limited position matching surface is formed between the same ends of the two second guide surfaces due to the height difference; The limiting surface can abut against the limiting matching surface to limit the rotation of the connecting member.

6. The sampling assembly according to claim 5, characterized in that: A locking mating block is provided on one side of one of the limiting surface and the limiting mating surface, and the locking block is provided on the other side of the two, and the locking groove is defined between the locking mating block and the limiting surface or the limiting mating surface, and the locking block can pass over the locking mating block and be restricted in the locking groove.

7. The sampling assembly according to claim 3, characterized in that: One of the outer peripheral wall of the connecting part and the inner peripheral wall of the connecting hole is provided with a spiral tooth, and the other one is provided with a spiral groove which is threadedly connected with the spiral tooth.

8. The sampling assembly according to claim 1, characterized in that: The connecting portion includes a connecting arm having one end connected to the notch, and the connecting arm has a mounting portion located below the notch and connected to the battery cell, and the temperature collecting portion is disposed on the top of the mounting portion; and / or, A through cavity is arranged in the connecting piece, and an operating panel is connected to the connecting piece to divide the top opening of the cavity into two parts.

9. The sampling assembly according to any one of claims 1 to 8, characterized in that: An elastic body is provided on the top of the temperature collecting part, and the connecting member presses the temperature collecting part onto the connecting part through the elastic body.

10. A battery module, characterized in that: The battery module is provided with a sampling assembly as claimed in any one of claims 1 to 9, and a plurality of bus bars, at least part of which are arranged on the bracket.

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