Temperature sensor fixing assembly and battery module

Abstract

The utility model relates to battery technology field, concretely relates to a temperature sensor fixed subassembly and battery module, including temperature sensing support, electric core and electrode connecting piece. Among them, temperature sensing support includes: support main part setting between electric core and electrode connecting piece, and electrode connecting piece and support main part crimp, need not to help other structure, can make support main part unable to have up and down displacement and up and down direction's deflection, first positioning part sets up on support main part, and first positioning part cooperates with the second positioning part that sets up on electric core and / or electrode connecting piece, makes support main part unable to have horizontal direction's translation and horizontal direction's deflection, thereby will temperature sensing support completely fixed. Temperature sensing fixed structure sets up on support main part, is used for fixing temperature sensor on electric core, makes temperature sensing sensor stably and electric core keep pasting, guarantees that temperature sensor can continuously reliably gather the temperature of electric core, reduces the error of battery module gathering temperature.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a temperature sensor fixing component and a battery module. Background Technology

[0002] The power source of electric vehicles is the battery module. In order to facilitate the management of battery status and ensure the safe operation of the battery module, it is necessary to collect the temperature of the cells in the battery module.

[0003] There are generally two methods for sampling the temperature of battery cells: The first method is to integrate the temperature sensor into the nickel plate that connects the busbar and the printed circuit board, and indirectly represent the actual temperature of the battery cell by collecting the temperature of the busbar. However, this sampling method will cause the collected temperature value to differ from the actual temperature of the battery cell. The second method is to fix the temperature sensor by hot riveting the plastic bracket, but this will increase the design difficulty and cost of the integrated busbar bracket.

[0004] To address the aforementioned issues, existing technical documents have provided corresponding solutions. For example, CN221327843U discloses a temperature sensing fixing component. By setting a structural body between the busbar and the busbar support, and fixing the temperature sensor between the busbar and the top cover of the cell in the extended part of the structural body, the temperature sensor can directly collect the cell temperature, reducing the error in the temperature collected by the battery module.

[0005] Although the aforementioned temperature sensing fixing component allows the temperature sensor to directly collect the cell temperature, it requires the coordinated cooperation of the bus, bus support, cell, and temperature sensing support structure, making the structure still relatively complex. Utility Model Content

[0006] 1. The problem to be solved To address the problem of complex structures in existing temperature sensor fixing components, this utility model provides a temperature sensor fixing component and battery module with a simple structure.

[0007] 2. Technical Solution To solve the above problems, the technical solution adopted by this utility model is as follows: The first aspect of this utility model provides a temperature sensor fixing assembly, including a temperature sensing bracket, a battery cell, and an electrode connecting piece; The temperature-sensing bracket includes: The support body is positioned between the battery cell and the electrode connecting piece, and the electrode connecting piece is pressed against the support body. Utilizing the fixed connection between the electrode connecting piece and the electrode post, when the electrode connecting piece is fixed to the electrode post, the lower end face of the electrode connecting piece is pressed against the support body. Without the need for other structures, this prevents the support body from vertically shifting or deflecting. The first positioning part is disposed on the bracket body. The first positioning part cooperates with the second positioning part disposed on the battery cell and / or electrode connecting piece to position the bracket body in the horizontal direction, so that the bracket body cannot be translated or deflected in the horizontal direction, thereby completely fixing the temperature sensing bracket.

[0008] The temperature sensing fixing structure is set on the bracket body and is used to press the temperature sensor onto the temperature sensor, so that the temperature sensor is stably attached to the battery cell, ensuring that the temperature sensor can continuously and reliably collect the temperature of the battery cell and reduce the error of the temperature collected by the battery module.

[0009] This invention only requires the coordinated cooperation of the battery cell, electrode connecting piece, and temperature sensing bracket to fix the temperature sensing bracket, making the structure simpler and easier to produce and install.

[0010] As a preferred embodiment of this utility model, the first positioning part is configured as a positioning post, which is fixedly disposed on the side of the bracket body facing the electrode connecting piece; the second positioning part is configured as a positioning hole, which can be inserted into the positioning post and is disposed on the electrode connecting piece.

[0011] As a preferred embodiment of this utility model, at least two positioning posts and two positioning holes are provided, with each positioning post being adapted to one positioning hole.

[0012] As a preferred embodiment of this utility model, the second positioning part is configured as an electrode post of the battery cell, and the cross-section of the electrode post is a non-circular cross-section; the first positioning part is configured as a positioning groove, which is disposed on the support body, and the electrode post can be inserted into the positioning groove.

[0013] As a preferred embodiment of the present invention, the first positioning part includes a positioning post and a positioning groove disposed on the support body, and the second positioning part includes a positioning hole disposed on the electrode connecting piece and an electrode post of the battery cell; the positioning post is adapted to the positioning hole, and the positioning groove is adapted to the electrode post.

[0014] As a preferred embodiment of this utility model, the temperature sensing fixing structure includes a temperature sensing acquisition slot and a temperature sensing fixing member disposed on the support body; wherein, the temperature sensing acquisition slot penetrates through the support body so that the temperature sensor placed therein can directly contact the battery cell; wherein, the temperature sensing fixing member is disposed on the side of the temperature sensing acquisition slot away from the battery cell, and is used to press the temperature sensor into the temperature sensing acquisition slot.

[0015] As a preferred embodiment of this utility model, one side of the temperature-sensing fixing member is rotatably connected to the main body of the bracket, and at least one side is provided with a first locking part, and a second locking part is correspondingly provided on the temperature-sensing bracket, wherein the first locking part can engage and fix with the second locking part.

[0016] The second aspect of this utility model provides a battery module, which includes a battery cell stack consisting of multiple battery cells connected in series with multiple electrode connecting pieces, a flexible circuit board, a temperature sensor, and the aforementioned temperature sensing bracket; wherein the temperature sensor is connected to the flexible circuit board and is disposed on the battery cell.

[0017] As a preferred embodiment of this utility model, it also includes a nickel sheet connected to the flexible circuit board; a fixing member is provided between the flexible circuit board and the cell cover plate of the cell stack, and the two sides of the fixing member are fixedly connected to the flexible circuit board and the cell cover plate respectively.

[0018] As a preferred embodiment of this utility model, the fixing component includes foam, and adhesive layers are provided between the foam and the flexible circuit board and between the foam and the battery cell cover. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the battery module in this utility model; Figure 2 This is a schematic diagram of the temperature sensing bracket of this utility model, in which the temperature sensing fixing component is in the open state; Figure 3 This is a schematic diagram of the temperature sensing bracket of this utility model. The temperature sensing fixing component is in the closed state in the figure. Figure 4 This is a schematic diagram showing the engagement state of the first and second locking parts in this utility model. Figure 5 This is a schematic diagram of the electrode connecting piece in this utility model. Figure 6 This is a schematic diagram of the front structure of the flexible circuit board in this utility model; Figure 7 This is a schematic diagram of the back structure of the flexible circuit board in this utility model.

[0020] Explanation of the labels in the diagram: 100. Temperature-sensing bracket; 110. Main body of the support frame; 120. First positioning part; 121. Positioning post; 122. Positioning groove; 130. Second positioning part; 131. Positioning hole; 132. Electrode post; 140. Temperature sensing fixing structure; 141. Temperature sensing acquisition slot; 142. Temperature sensing fixing component; 143. First snap-fit ​​part; 143-1. Extension plate; 143-2. ​​First snap-fit ​​block; 144. Second snap-fit ​​part; 200. Battery cells; 300. Electrode connecting piece; 400. Flexible circuit board; 500. Temperature sensor; 600. Fasteners; 700, nickel sheet; 800, Exhaust port. Detailed Implementation

[0021] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0022] The structures, proportions, and sizes illustrated in the accompanying drawings are solely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0023] Example 1 like Figures 1-5 As shown, this embodiment provides a temperature sensor fixing assembly, including a temperature sensing bracket 100, a battery cell 200, and an electrode connecting piece 300; the electrode connecting piece 300 can be configured as an aluminum bar, with both ends of the aluminum bar welded to the positive electrode post 132 and the negative electrode post 132 of the adjacent battery cell 200, respectively, so that multiple battery cells 200 in the battery module are connected in series.

[0024] The temperature-sensing bracket 100 includes a bracket body 110, a first positioning part 120, and a temperature-sensing fixing structure 140.

[0025] The support body 110 is disposed between the battery cell 200 and the electrode connecting piece 300, and the electrode connecting piece 300 is pressed against the support body 110. Specifically, after the electrode connecting piece 300 is welded to the electrode post 132 of the battery cell 200, there will be a certain gap between the electrode connecting piece 300 and the body of the battery cell 200. The height of this gap is approximately equal to the height of the electrode post 132. The support body 110 is disposed within the gap between the battery cell 200 and the electrode connecting piece 300. After the electrode connecting piece 300 is welded to the electrode post 132, the lower end face of the electrode connecting piece 300 is pressed against the support body 110, preventing the support body 110 from moving up and down or deflecting in the vertical direction.

[0026] It should be noted that the portion of the support body 110 pressed by the electrode connecting piece 300 refers to the area of ​​the support body 110 covered by the electrode connecting piece 300, specifically the portion of the support body 110 closest to the electrode connecting piece 300, which is preferably a flat surface. The pressing can refer to a close fit or a tight fixation, as long as it prevents the support body 110 from vertical displacement or deflection.

[0027] The first positioning part 120 is disposed on the bracket body 110. The first positioning part 120 cooperates with the second positioning part 130 disposed on the battery cell 200 and / or the electrode connecting piece 300 to prevent the temperature sensing bracket 100 from shifting horizontally. That is, at least one of the battery cell 200 and the electrode connecting piece 300 is provided with the second positioning part 130. The cooperation between the first positioning part 120 and the second positioning part 130 can position the temperature sensing bracket 100 in the horizontal direction, so that the temperature sensing bracket 100 cannot be translated or deflected in the horizontal direction.

[0028] The temperature sensing fixing structure 140 is disposed on the bracket body 110 and is used to fix the position of the temperature sensor 500. When the temperature sensor 500 is working, it should be in contact with the battery cell 200 so as to accurately measure the actual temperature of the battery cell 200. The temperature sensing fixing structure 140 can keep the temperature sensor stably in contact with the battery cell 200, ensuring that the temperature sensor 500 can continuously and reliably monitor the temperature of the battery cell 200.

[0029] In this embodiment, the temperature sensor is stably attached to the battery cell 200 by the temperature sensing fixing structure 140 on the bracket body 110, ensuring that the temperature sensor 500 can continuously and reliably collect the temperature of the battery cell 200 and reduce the error of the battery module's temperature collection.

[0030] In this embodiment, the support body 110 is positioned between the electrode connecting piece 300 and the battery cell 200. Utilizing the fixed connection between the electrode connecting piece 300 and the electrode post 132, when the electrode connecting piece 300 is fixed to the electrode post 132, its lower end face is pressed against the support body 110. Without the need for other structures, the support body 110 cannot undergo vertical displacement or deflection. Simultaneously, the first positioning part 120 on the support body 110 cooperates with the second positioning part 130 on the battery cell 200 and / or the electrode connecting piece 300 to horizontally position the support body 110, preventing horizontal translation and deflection, thus completely fixing the temperature sensing bracket 100. Only the coordinated cooperation of the battery cell 200, the electrode connecting piece 300, and the temperature sensing bracket 100 is required to fix the temperature sensing bracket 100, resulting in a simpler structure that is easier to manufacture and install.

[0031] In a first embodiment of the first positioning part 120 and the second positioning part 130, the first positioning part 120 is configured as a positioning post 121, which is fixedly disposed on the side of the support body 110 facing the electrode connecting piece 300; the second positioning part 130 is configured as a positioning hole 131, which is disposed on the electrode connecting piece 300, and the positioning post 121 can be inserted into the positioning hole 131. After insertion, the support body 110 cannot be translated or deflected in the horizontal direction.

[0032] During installation, first place the temperature sensing bracket 100 at the predetermined position on the battery cell 200, then place the electrode connecting piece 300 on the electrode post 132. At this time, the positioning post 121 on the temperature sensing bracket 100 is inserted into the positioning hole 131 of the electrode connecting piece 300. Finally, weld the electrode connecting piece 300 to the electrode post 132 to completely fix the temperature sensing bracket 100.

[0033] In this implementation, both the positioning pin 121 and the positioning hole 131 are very easy to process, and the way they fit together is simple and clear, without the need for complex nesting, which can improve production and installation efficiency.

[0034] Optionally, only one positioning post 121 and one positioning hole 131 are provided. In this case, the connecting surfaces of the positioning post 121 and the positioning hole 131 should not be circular surfaces, but rectangular surfaces, triangular surfaces, etc., so that the temperature sensing bracket 100 cannot rotate after the positioning post 121 and the positioning hole 131 are inserted.

[0035] Optionally, at least two positioning pins 121 and two positioning holes 131 are provided respectively, and the mating surfaces of the positioning pins 121 and the positioning holes 131 can be circular surfaces.

[0036] In a second embodiment of the first positioning part 120 and the second positioning part 130, the second positioning part 130 is configured as an electrode post 132 of the battery cell 200, and the first positioning part 120 is configured as a positioning groove 122, which is disposed on the support body 110. The electrode post 132 can be inserted into the positioning groove 122. The cross-section of the electrode post 132 should be a non-circular cross-section, such as a rectangular cross-section or an elliptical cross-section. After insertion, the support body 110 cannot be translated or deflected in the horizontal direction.

[0037] Preferably, the positioning groove 122 is a slot that penetrates the temperature sensing bracket 100, so as to facilitate observation and confirmation of the insertion status of the positioning groove 122 and the electrode post 132.

[0038] During installation, first, the positioning groove 122 on the bracket body 110 is fitted onto the electrode post 132, then the electrode connecting piece 300 is placed at the end of the electrode post 132, and finally the electrode connecting piece 300 is welded to the electrode post 132 to completely fix the temperature sensing bracket 100.

[0039] In this embodiment, the second positioning part 130 is directly configured as an electrode post 132, and only the positioning groove 122 needs to be machined on the bracket body 110, making full use of the structural components of the battery module itself and further saving processing steps.

[0040] In a third embodiment of the first positioning part 120 and the second positioning part 130, the first positioning part 120 includes a positioning post 121 and a positioning groove 122 disposed on the support body 110, and the second positioning part 130 includes a positioning hole 131 disposed on the electrode connecting piece 300 and an electrode post 132 of the battery cell 200; wherein, the positioning post 121 is adapted to the positioning hole 131, and the positioning groove 122 is adapted to the electrode post 132. In this case, the electrode post 132 can be a cylinder, the positioning post 121 can also be a cylinder, and only one positioning post 121 and one positioning hole 131 may be provided respectively.

[0041] During installation, first, the positioning groove 122 on the bracket body 110 is fitted onto the electrode post 132, and then the electrode connecting piece 300 is placed at the end of the electrode post 132. At this time, the positioning post 121 on the bracket body 110 is inserted into the positioning hole 131 of the electrode connecting piece 300. Finally, the electrode connecting piece 300 is welded to the electrode post 132 to completely fix the temperature sensing bracket 100.

[0042] In this embodiment, the dual positioning of the positioning groove 122 and the electrode post 132, as well as the positioning post 121 and the positioning hole 131, provides higher reliability; and the cooperation between the positioning groove 122 and the electrode post 132 can achieve the pre-positioning of the temperature sensing bracket 100.

[0043] In one embodiment, the temperature sensing fixing structure 140 includes a temperature sensing acquisition slot 141 and a temperature sensing fixing member 142 disposed on the support body 110. The temperature sensing acquisition slot 141 penetrates the support body 110. After the temperature sensor 500 is placed in the temperature sensing acquisition slot 141, the temperature sensor 500 can directly contact the battery cell 200 to directly collect the temperature of the battery cell 200. The temperature sensing fixing member 142 is disposed on the side of the support body 110 away from the battery cell 200. After the temperature sensor 500 is placed in the temperature sensing acquisition slot 141, the temperature sensor 500 can be fixed in the temperature sensing acquisition slot 141 by the temperature sensing fixing member 142 to prevent the temperature sensor 500 from detaching from the temperature sensing acquisition slot 141.

[0044] In one embodiment, one side of the temperature-sensing fixing member 142 is rotatably connected to the bracket body 110, and at least one side is provided with a first snap-fit ​​part 143. A second snap-fit ​​part 144 is correspondingly provided on the bracket body 110. The first snap-fit ​​part 143 can be engaged and fixed with the second snap-fit ​​part 144, and can also be released from the snap-fit.

[0045] Specifically, the temperature sensing fixture 142 can be configured as a pressure plate, which is fixedly covered above the temperature sensing acquisition slot 141, thereby fixing the temperature sensor 500 inside the temperature sensing acquisition slot 141.

[0046] One side of the temperature sensing fixture 142 is rotatably connected to the bracket body 110 via a pivot, allowing the temperature sensing fixture 142 to rotate upward around the pivot to open the temperature sensing acquisition slot 141, so that the temperature sensor 500 can be placed into the temperature sensing acquisition slot 141; the temperature sensing fixture 142 can also rotate downward around the pivot to close the temperature sensing acquisition slot 141, so as to fix the temperature sensor 500 in the temperature sensing acquisition slot 141.

[0047] The first locking part 143 and the rotating shaft are respectively disposed on opposite sides of the temperature-sensing fixing member 142. The first locking part 143 includes an extension plate 143-1 extending downward from the temperature-sensing fixing member 142, and a first locking block 143-2 is fixedly disposed at the end of the extension plate away from the temperature-sensing fixing member 142. The second locking part 144 is configured as a second locking block fixedly disposed on the bracket body 110. The first locking block 143-2 and the second locking block have corresponding inclined surface structures. When the temperature-sensing fixing member 142 rotates downward around the rotating shaft, the first inclined surface ( Figure 4 The slope facing downwards to the right in the middle will meet the second slope on the second block. Figure 4 The extension plate 143-1 (facing the upper left slope) contacts the first locking block 143-2. ​​During the continuous relative movement between the first locking block 143-2 and the second locking block, the extension plate 143-1 will deform under force, allowing the first locking block 143-2 to pass downward over the second locking block. After the first locking block 143-2 passes over the second locking block, the extension plate 143-1 returns to its original shape, causing the first locking block 143-2 to engage with the second locking block. At this time, the temperature sensing fixing member 142 contacts the upper part of the temperature sensor 500. Without manual operation, the temperature sensing fixing member 142 cannot rotate upward around the rotation axis. When it is necessary to open the temperature sensing fixing member 142, simply press the extension plate 143-1 manually to disengage the first locking block from the second locking block.

[0048] In one embodiment, the support body 110 is provided with an exhaust port 800 corresponding to the cell explosion-proof valve, which ensures that the cell 200 can be vented smoothly in the event of thermal runaway.

[0049] Example 2 like Figure 1 , Figure 6 and Figure 7 As shown, based on the above embodiments, this embodiment provides a battery module, which includes a battery cell stack consisting of multiple electrode connecting pieces 300 connected in series with multiple battery cells 200, a flexible circuit board 400, a temperature sensor 500, and the temperature sensing bracket 100 in the above embodiments; wherein, the temperature sensor 500 is connected to the flexible circuit board 400, and the temperature sensor 500 is pressed and fixed to the battery cell 200 by a temperature sensing fixing structure 140.

[0050] In one embodiment, the assembly further includes nickel sheets 700 connected to the flexible circuit board 400. A fastener 600 is disposed between the flexible circuit board 400 and the cell cover plate of the cell stack, with both sides of the fastener 600 fixedly connected to the flexible circuit board 400 and the cell cover plate, respectively. During battery module assembly, the flexible circuit board 400 can be directly fixed to the cell cover plate using the fastener 600. The nickel sheets 700 on the flexible circuit board 400 correspond one-to-one with the electrode connecting pieces 300, achieving pre-positioning of the nickel sheets 700 and the electrode connecting pieces 300. This facilitates the overall welding of multiple nickel sheets 700 and multiple electrode connecting pieces 300, improving efficiency.

[0051] In one embodiment, the fastener 600 includes foam, and adhesive layers are provided between the foam and the flexible circuit board 400 and between the foam and the cell cover plate. The cell cover plate refers to the upper cover plate at the end of the cell.

[0052] Specifically, the adhesive layer can be glue, double-sided tape, etc. During installation, the foam can be first bonded to the flexible circuit board 400 through the adhesive layer, and then the foam can be bonded to the cell cover plate through the adhesive layer to fix the flexible circuit board 400 and the cell cover plate, and to complete the pre-positioning between the multiple nickel sheets 700 and the multiple electrode connecting pieces 300.

[0053] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A temperature sensor mounting assembly, comprising a temperature sensor bracket (100), a battery cell (200), and an electrode connecting piece (300). Its features are, The temperature-sensing bracket (100) includes: The bracket body (110) is disposed between the battery cell (200) and the electrode connecting piece (300), and the electrode connecting piece (300) is pressed against the bracket body (110); The first positioning part (120) is disposed on the bracket body (110). The first positioning part (120) cooperates with the second positioning part (130) disposed on the battery cell (200) and / or the electrode connecting piece (300) to prevent the temperature sensing bracket (100) from shifting horizontally. A temperature-sensing fixing structure (140) is set on the bracket body (110) and is used to press on the temperature sensor (500).

2. The temperature sensor fixing assembly according to claim 1, characterized in that: The first positioning part (120) is configured as a positioning post (121), and the positioning post (121) is fixedly installed on the side of the bracket body (110) facing the electrode connecting piece (300); The second positioning part (130) is configured as a positioning hole (131), which can be inserted into the positioning post (121), and the positioning hole (131) is provided on the electrode connecting piece (300).

3. The temperature sensor fixing assembly according to claim 2, characterized in that: At least two positioning posts (121) and two positioning holes (131) are provided, and each positioning post (121) is adapted to a positioning hole (131).

4. The temperature sensor fixing assembly according to claim 1, characterized in that: The second positioning part (130) is configured as the electrode post (132) of the battery cell (200), and the cross section of the electrode post (132) is a non-circular cross section; The first positioning part (120) is configured as a positioning groove (122), which is located on the support body (110), and the electrode post (132) can be inserted into the positioning groove (122).

5. The temperature sensor fixing assembly according to claim 1, characterized in that: The first positioning part (120) includes a positioning post (121) and a positioning groove (122) disposed on the support body (110), and the second positioning part (130) includes a positioning hole (131) disposed on the electrode connecting piece (300) and an electrode post (132) of the battery cell (200). The positioning post (121) is adapted to the positioning hole (131), and the positioning groove (122) is adapted to the electrode post (132).

6. The temperature sensor fixing assembly according to claim 1, characterized in that: The temperature sensing fixing structure (140) includes a temperature sensing acquisition slot (141) and a temperature sensing fixing component (142) disposed on the support body (110). in: The temperature sensing acquisition slot (141) penetrates through the main body of the bracket (110) so that the temperature sensor (500) placed therein can directly contact the battery cell (200); The temperature sensing fixture (142) is disposed on the side of the temperature sensing acquisition slot (141) away from the battery cell (200) and is used to press the temperature sensor (500) into the temperature sensing acquisition slot (141).

7. The temperature sensor fixing assembly according to claim 6, characterized in that: One side of the temperature-sensing fastener (142) is rotatably connected to the bracket body (110), and at least one side is provided with a first snap-fit ​​part (143). The temperature-sensing bracket (100) is provided with a corresponding second snap-fit ​​part (144). The first snap-fit ​​part (143) can engage and fix with the second snap-fit ​​part (144).

8. A battery module, characterized in that: The battery module includes a cell stack consisting of multiple electrode connecting pieces (300) connected in series with multiple cells (200), a flexible circuit board (400), a temperature sensor (500), and a temperature sensing bracket (100) as described in any one of claims 1-7; wherein the temperature sensor (500) is connected to the flexible circuit board (400) and the temperature sensor (500) is disposed on the cell (200).

9. The battery module according to claim 8, characterized in that: It also includes a nickel sheet (700) which is attached to the flexible circuit board (400); A fastener (600) is provided between the flexible circuit board (400) and the cell cover plate of the cell stack. The two sides of the fastener (600) are fixedly connected to the flexible circuit board (400) and the cell cover plate, respectively.

10. The battery module according to claim 9, characterized in that: The fastener (600) includes foam, and adhesive layers are provided between the foam and the flexible circuit board (400) and between the foam and the cell cover.

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