CN220042095U

CN220042095U - Fixed bolster and battery module

Info

Publication number: CN220042095U
Application number: CN202321238484.4U
Authority: CN
Inventors: 孙世强
Original assignee: Lanjun New Energy Technology Co ltd
Current assignee: Lanjun New Energy Technology Co ltd
Priority date: 2023-05-17
Filing date: 2023-05-17
Publication date: 2023-11-17
Anticipated expiration: 2033-05-17

Abstract

The disclosure provides a fixed bolster and battery module relates to battery technology field. The fixing support is applied to a battery module and comprises a support main body and a branch part, wherein the support main body is connected with a tab assembly. The branch part is connected to one side or two sides of the bracket main body; the branch part is used for being connected with the side plate. This fixed bolster can effectively fix the tab subassembly, prevents that the tab subassembly vibration amplitude from being too big, improves the connection reliability of tab subassembly, and then improves the stability of battery module operation.

Description

Fixed bolster and battery module

Technical Field

The utility model relates to the technical field of batteries, in particular to a fixing bracket and a battery module.

Background

In the prior art, the battery module can acquire the voltage of the current core in operation so as to ensure the stable operation of the battery module. The voltage acquisition mode generally adopts a PCB acquisition board, and the acquisition board is connected with the series connection tabs through connecting sheets. Because the connection piece needs to bear the bridging function, if the battery module has relative displacement between the acquisition plate and the serial connection tabs in the working process, the connection piece can be caused to twist or fracture, and therefore the battery module cannot operate.

Disclosure of Invention

The utility model aims to provide a fixing support and a battery module, which can well fix a tab assembly, reduce the risk of torsion or fracture of a connecting sheet and improve the running stability of the battery module.

Embodiments of the present utility model are implemented as follows:

in a first aspect, the utility model provides a fixing bracket, which is applied to a battery module, wherein the battery module comprises a battery cell, a tab assembly and a side plate, the battery cell is arranged in a containing cavity surrounded by the side plate, and the battery cell is connected with the tab assembly; the fixing bracket includes:

the bracket main body is connected with the tab assembly;

the branch part is connected to one side or two sides of the bracket main body; the branch part is used for being connected with the side plate.

In an alternative embodiment, a folding lug is arranged on one side of the branch part far away from the bracket main body, and the folding lug is used for being connected with the side plate.

In an alternative embodiment, the folding lug is provided with a fixing hole, and the fixing hole is used for a fixing piece to pass through so as to connect the folding lug and the side plate.

In an alternative embodiment, the branch is provided with a mounting element for connection to the insulating cover.

In an alternative embodiment, the bracket body is provided with a flange portion.

In an alternative embodiment, the flanging part is provided with a relief groove.

In a second aspect, the present utility model provides a battery module comprising:

an end plate;

the side plate is connected with the end plate, and the end plate and the side plate enclose a containing cavity;

the battery cell is arranged in the accommodating cavity;

the tab assembly is connected with the battery cell;

the mounting bracket of any of the preceding embodiments, connected to the tab assembly.

In an alternative embodiment, the tab assembly comprises a collection plate, a connecting sheet and a series tab, wherein one end of the connecting sheet is connected with the collection plate, and the other end of the connecting sheet is connected with the series tab; the fixed support is connected with the acquisition board.

In an alternative embodiment, the side plate is provided with a boss, which is connected to the branch portion.

In an alternative embodiment, the side plates are provided with lifting lugs for connection with the box.

In an alternative embodiment, the battery module further comprises an insulating cover, the insulating cover is connected with the fixing support, and the insulating cover is arranged on one side, away from the tab assembly, of the fixing support.

The beneficial effects of the embodiment of the utility model include:

according to the fixing support provided by the embodiment of the utility model, the support main body is connected with the tab assembly, so that the tab assembly is effectively fixed, the vibration amplitude of the tab assembly is reduced, and the connection stability of the tab assembly is improved. And the branch portion is connected with the curb plate, can further improve the stability that support main part and tab subassembly are connected, and connection structure is reliable, is favorable to reducing the connection piece and twists reverse or cracked risk, improves the stability of battery module operation.

The battery module provided by the embodiment of the utility model can reliably fix the tab assembly by adopting the fixing bracket, and is beneficial to improving the running stability of the battery module.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a battery module according to an embodiment of the present utility model;

fig. 2 is an exploded view of a battery module according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of a connection structure of a tab assembly of a battery module according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of a fixing bracket according to an embodiment of the present utility model;

fig. 5 is a schematic structural view of a side plate of a battery module according to an embodiment of the present utility model.

Icon: 100-fixing a bracket; 110-a stent body; 111-a burring part; 113-avoiding grooves; 130-a branch; 131-folding the lugs; 133-fixing holes; 135-mounting; 200-battery module; 210-end plates; 211-mounting rack; 220-side plates; 221-boss; 223-blind hole; 225-lifting lugs; 226-connecting holes; 230-an electric core; 240-a wafer assembly; 241-acquisition plate; 242-connecting pieces; 243-series of tabs; 244-pole outlet tabs; 250-insulating cover; 251-via.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the existing battery module, a PCB acquisition board is mostly adopted to acquire the voltage of each battery cell. Specifically, the acquisition board is connected with the serial connection tabs through the connecting sheets. The collected voltage signals are led to an output interface through an integrated circuit in the PCB collection board, and then are uploaded to a battery management system through a conversion wire harness. Although the collection line in the PCB collection board is stable and reliable, the connection piece needs to bear the bridging function, if the battery module is in the working process, the relative displacement exists between the PCB collection board and the serial connection tabs, the connection piece is easy to twist or break, and the normal work of the whole battery module is further affected.

In order to overcome at least one defect in the prior art, the embodiment provides a fixing support and a battery module comprising the same, which can well fix a tab assembly, reduce the risk of torsion or fracture of a connecting sheet, and improve the stability and reliability of the operation of the battery module.

Referring to fig. 1 to 4, the present embodiment provides a fixing bracket 100, which is applied to a battery module 200 for fixing a tab assembly 240. Specifically, the battery module 200 includes an end plate 210, a side plate 220, an electric core 230 and a tab assembly 240, the side plate 220 is connected with the end plate 210, and the end plate 210 and the side plate 220 enclose a containing cavity; the battery cell 230 is disposed in the accommodating cavity, and the tab assembly 240 is connected to the battery cell 230. The tab assembly 240 includes a collecting plate 241, a connecting piece 242, and a serial tab 243, wherein one end of the connecting piece 242 is connected with the collecting plate 241, and the other end is connected with the serial tab 243. The fixed support 100 is connected with the acquisition board 241 for limiting the position of the acquisition board 241, preventing the relative displacement of the acquisition board 241 and the serial bar 243 from occurring, reducing the vibration amplitude of the acquisition board 241.

In this embodiment, the battery module 200 is a rectangular module. The battery cell 230 adopts a square battery cell 230, and a plurality of battery cells 230 are connected in series and parallel. Two end plates 210 are located in the width direction of the rectangular module. The two side plates 220 are located in the length direction of the rectangular module. The top, i.e., the upper surface, of the battery cell 230 is provided with a post, and the tab assembly 240 is disposed on the side of the battery cell 230 having the post. The post is welded to the series tab 243. The collection board 241 adopts the PCB board, and collection board 241 is rectangular form, sets up along the length direction of battery module 200, and the span is great. The two ends of the collecting plate 241 are fixed to the two end plates 210, respectively.

Optionally, the tab assembly 240 further includes an output tab 244, namely an output positive electrode and an output negative electrode. The tab 244 is positioned at an end of the battery module 200, and the tab 244 is connected with the end plate 210. The end plate 210 is provided with an installation frame 211 made of insulating material, and the installation frame 211 is used for connecting and supporting the pole outlet tabs 244. The two ends of the collecting plate 241 are respectively connected with the mounting frame 211, including but not limited to, a bolt connection, a snap connection, or a riveting connection.

Because the span of the collecting plate 241 in the length direction of the battery module 200 is larger, if only two ends in the length direction are fixed, when the battery module 200 is in the severe vibration environment, the middle part of the collecting plate 241 is easy to deviate in larger amplitude due to lack of corresponding constraint. The end of the connecting piece 242 connected to the series bar 243 has a relatively small vibration amplitude due to the constraints of the cell 230, the series bar 243 and the side plate 220. The end of the connecting piece 242 connected with the collecting plate 241 has larger amplitude deviation due to the collecting plate 241, which can lead to the twisting or breaking phenomenon of the connecting piece 242 at the middle part, thereby affecting the normal operation of the battery module 200. In this embodiment, at the middle part of the collecting plate 241, the fixing bracket 100 is correspondingly disposed, and its function is mainly to restrict the middle part of the collecting plate 241, reduce the influence of external vibration on the collecting plate 241, reduce the risk of torsion or fracture of the connecting piece 242, and improve the stability and reliability of the operation of the battery module 200.

Referring to fig. 4, the fixing bracket 100 includes a bracket body 110 and a branch 130, and the bracket body 110 is connected to a tab assembly 240. The branch portion 130 is connected to one side or both sides of the holder body 110; the branch 130 is for connection with the side plate 220. The fixing bracket 100 can effectively fix the tab assembly 240, prevent the vibration amplitude of the tab assembly 240 from being too large, improve the connection reliability of the tab assembly 240, and further improve the operation stability of the battery module 200.

It is understood that the holder body 110 is elongated and is disposed along the length direction of the battery module 200. The width of the holder body 110 is adapted to the width of the collecting plate 241. Alternatively, the branch portions 130 are respectively disposed at two sides of the stand body 110, and the branch portions 130 at the two sides are disposed at a dislocation. The branch parts 130 are extended in the width direction of the battery module 200 so that the branch parts 130 are connected with the side plates 220. The shape, size and number of the branching portions 130 may be flexibly set according to practical situations. Alternatively, the position of the branching portion 130 may be determined according to the layout position of the serial tabs 243, and the position of the branching portion 130 avoids the position of the serial tabs 243.

The connection manner of the branching portion 130 and the side plate 220 includes, but is not limited to, bonding, welding, riveting, bolting, screwing, clamping or magnetic attachment, etc. The side of the branch portion 130 away from the bracket main body 110 is provided with a folding lug 131, and the folding lug 131 is used for being connected with the side plate 220. Optionally, the lug 131 is turned down from the end of the branch 130. The folding lug 131 is provided with a fixing hole 133, and the fixing hole 133 is used for a fixing piece to pass through so as to connect the folding lug 131 and the side plate 220. The fixing member may be a bolt or a screw to achieve the bolting of the hinge 131 and the side plate 220. Of course, in other embodiments, the tab 131 may be connected to the side plate 220 by a snap-fit, welding or riveting, which is not limited herein.

The branch 130 is provided with a mounting member 135, and the mounting member 135 is connected to the insulating cover 250. Optionally, the mounting member 135 is a threaded post. In this way, the branch 130 and the insulation cover 250 may be fixed by bolting or screwing. Of course, the mounting member 135 may be a threaded hole, a slot, a fixture, or the like, which is not particularly limited herein. The number and position of the mounting members 135 can be flexibly adjusted according to practical situations.

At least one of the holder main body 110 and the branch portion 130 is provided with a burring portion 111. Optionally, the bracket main body 110 is provided with a flanging portion 111. The burring 111 forms a burring at the edge of the bracket body 110. The flange portion 111 acts like a reinforcing rib, so that the structural strength of the bracket main body 110 can be improved, and the stability is improved. And, the edges of the holder body 110 can be prevented from scratching or piercing the battery cell 230 and other components. Alternatively, the burring 111 is turned up. This can further prevent the edges of the holder main body 110 from scratching the battery cells 230, improving safety. Of course, in the case of securing a safe distance between the fixing holder 100 and the battery cell 230, the burring 111 may be folded down, which is not particularly limited herein. Optionally, in the present embodiment, the edge of the branching portion 130 is also provided with a burring portion 111 to further improve the structural strength and the assembly safety of the fixing bracket 100.

In this embodiment, the burring 111 is provided with a relief groove 113. The relief groove 113 serves to clear the position of the connecting tab 242, preventing interference of the connecting tab 242 with the mounting bracket 100 during assembly. The shape and the size of the avoidance groove 113 are similar to those of the connecting sheet 242, and the position of the avoidance groove 113 corresponds to that of the connecting sheet 242. It can be appreciated that in the present embodiment, the relief groove 113 is formed in the burring 111 of the bracket main body 110. The provision of the flange portion 111 also reduces the influence of the groove on the overall structural strength of the fixing bracket 100, since the bracket main body 110 is provided with the avoiding groove 113.

The embodiment of the utility model also provides a battery module 200, which comprises an end plate 210, a side plate 220, an electric core 230, a tab assembly 240 and the fixing bracket 100, wherein the side plate 220 is connected with the end plate 210, and the end plate 210 and the side plate 220 enclose a containing cavity; the battery cell 230 is disposed in the accommodating cavity, and the tab assembly 240 is connected to the battery cell 230. The tab assembly 240 includes a collecting plate 241, a connecting piece 242, a serial tab 243 and a pole outlet tab 244, wherein one end of the connecting piece 242 is connected with the collecting plate 241, and the other end is connected with the serial tab 243. The fixed bracket 100 is connected to the acquisition plate 241.

Specifically, the end plate 210 is provided with a mounting frame 211 made of an insulating material, and the mounting frame 211 is used for connecting and supporting the pole outlet tabs 244. The both ends of collection board 241 are connected with mounting bracket 211 respectively, realize fixedly. The middle part of the acquisition board 241 is fixedly connected with the fixed bracket 100. Thus, reliable fixing of the collecting plate 241 can be achieved, vibration amplitude of the collecting plate 241 is reduced, the risk of torsion or breakage of the connecting sheet 242 in the vibration process is reduced, the service life of the connecting sheet 242 is prolonged, normal operation of the voltage collecting function of the collecting plate 241 is ensured, and normal operation of the battery module 200 is further ensured. Of course, the collecting board 241 may collect the voltage of the battery cell 230, and may also collect the current, the temperature, etc., which is not particularly limited herein.

Referring to fig. 5, the side plate 220 is provided with a boss 221, and the boss 221 is connected to the branch 130. Optionally, the boss 221 is provided with a blind hole 223, and the boss 221 is used for connecting with the hinge 131. The blind hole 223 is opposite to the fixing hole 133 on the hinge 131. Optionally, the blind hole 223 is a threaded hole, and fixing members such as screws sequentially pass through the fixing hole 133 and the blind hole 223, so that the fixing connection between the hinge 131 and the boss 221, that is, the connection between the fixing bracket 100 and the side plate 220, can be realized. In this embodiment, the blind hole 223 is formed on the boss 221, so the design is because the thickness of the side plate 220 is low, if the threaded hole is directly formed on the side plate 220, the depth of the thread is low at first, the later stage of screwing is inconvenient, and if the force is improper during screwing, the side wall of the battery cell 230 can be directly pierced, so that the whole battery cell 230 is scrapped. Therefore, the boss 221 with a certain thickness is designed on the side plate 220, so that the screw tightening strength in the later stage can be ensured, the whole thickness of the side plate 220 is not increased, the space utilization rate in the battery box is improved, and the protection of the battery cell 230 is facilitated. The blind holes 223 are arranged, so that reliable connection can be achieved, and the electric core 230 can be prevented from being stabbed by parts such as screws.

Optionally, the side plate 220 is provided with a lifting lug 225, and the lifting lug 225 is used for being connected with the box body. Specifically, the battery module 200 is typically placed in a battery case to form a battery pack as a power source of the power device. There are typically one or more battery modules 200 in the battery case, and the battery modules 200 are connected in series-parallel. Thus, the lifting lug 225 can be fixed with the structural beam in the battery box body, so that the position of the battery module 200 in the battery box body is fixed. In a conventional method of fixing the battery module 200 and the battery case, both sides of the upper surface of the end plate 210 are perforated, and the end plate 210 is fixed to the battery case by using a screw shaft passing through the holes. The method has few fixed points and poor connection reliability. In this embodiment, the lifting lug 225 is disposed on the side plate 220, and the connecting hole 226 is disposed on the lifting lug 225, so that the side plate 220 and the structural beam in the battery box can be fixed by adopting a mode of bolting or screwing. Thus, the contact area between the structural beam and the side plate 220 is wider, the fixing points are more, the fixing reliability of the battery module 200 can be greatly improved, and the quality of the whole battery pack is improved. The number and the positions of the lifting lugs 225 can be flexibly set according to practical situations.

In addition, the battery module 200 further includes an insulation cover 250, the insulation cover 250 is connected with the fixing bracket 100, and the insulation cover 250 is disposed at a side of the fixing bracket 100 away from the tab assembly 240. The insulation cover 250 serves the purpose of electrical isolation, prevents short circuits, and improves the safety of the battery module 200. Optionally, the branch 130 of the fixing bracket 100 is provided with a threaded column, which is a connection column provided with a threaded hole, so as to facilitate screw connection. Through holes 251 are formed in the insulating cover 250 at positions corresponding to the threaded columns, and screws are screwed into the threaded columns through the through holes 251, so that the fixing support 100 and the insulating cover 250 can be fixedly connected. The screw connection mode is more reliable in structure and strong in durability. Compared with the common insulating cover 250 which is fixed in a gluing or plastic buckling mode, the existing connecting modes are greatly affected by the environment, for example, in a gluing and fixing mode, as the battery module 200 is put into use, the viscosity of the glue is reduced after being heated, so that the insulating cover 250 is caused to fall off, and a certain potential safety hazard is caused. And adopt the plastics buckle mode, then inconvenient later stage dismantles and maintains, and buckle structure all has sharp closed angle in addition generally, if drop in the battery box carelessly in the dismantlement process, can lead to later stage buckle to beat in the box, probably causes other spare part fish tail scheduling phenomenon. Therefore, the threaded column is adopted in the embodiment to connect reliably, is durable, is not easy to fail, is convenient to assemble and disassemble, and is good in safety.

According to the battery module 200 provided by the embodiment of the utility model, the fixing support 100 is used for fixing and limiting the acquisition plate 241, so that the vibration amplitude of the acquisition plate 241 is reduced, the service life of the connecting sheet 242 is prolonged, and the normal and stable operation of the battery module 200 is ensured. In addition, the fixing support 100 is connected with the side plate 220, not only can the collecting plate 241 be limited, but also the electric core 230 can be limited, the up-and-down jumping amplitude of the electric core 230 is reduced, and the electric cores 230 are connected by the series connection of the tabs 243, so that the shearing force caused by the up-and-down jumping of the electric core 230 by the series connection of the tabs 243 can be greatly reduced, the connection reliability of the whole battery module 200 is improved, and the structure is more stable.

In this embodiment, the fixing bracket 100 is made of an insulating material for improving electrical safety.

In summary, the fixing bracket 100 and the battery module 200 provided in the embodiment of the utility model have the following beneficial effects:

according to the fixing support 100 provided by the embodiment of the utility model, the support main body 110 is connected with the tab assembly 240, so that the tab assembly 240 is effectively fixed, particularly the acquisition plate 241 is limited, the vibration amplitude of the acquisition plate 241 is reduced, and the service life of the connecting sheet 242 is prolonged. And, the branch portion 130 is connected with the side plate 220, so as to further limit the battery cell 230, reduce the up-and-down jumping amplitude of the battery cell 230, reduce the shearing force caused by up-and-down jumping of the battery cell 230 on the serial connection tab 243, and improve the running stability and reliability of the battery module 200.

The battery module 200 provided by the embodiment of the utility model adopts the fixing bracket 100, can reliably fix the tab assembly 240, reduces the vibration amplitude of the acquisition plate 241, reduces the up-and-down jumping amplitude of the battery cell 230, has reliable structure, and is beneficial to prolonging the service life of the connecting sheet 242. And, the fixing bracket 100 and the insulating cover 250 are connected by using screws, so that the reliability is high, the safety is good, and the stability and the reliability of the operation of the battery module 200 can be improved.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The fixing support is characterized by being applied to a battery module (200), wherein the battery module (200) comprises a battery cell (230), a tab assembly (240) and a side plate (220), the battery cell (230) is arranged in a containing cavity surrounded by the side plate (220), and the battery cell (230) is connected with the tab assembly (240); the fixing bracket (100) includes:

a bracket body (110), the bracket body (110) being connected to the tab assembly (240);

a branching portion (130), wherein the branching portion (130) is connected to one side or both sides of the bracket main body (110); the branching portion (130) is configured to be connected to the side plate (220).

2. The fixing bracket according to claim 1, wherein a folded lug (131) is provided on a side of the branch portion (130) away from the bracket main body (110), and the folded lug (131) is used for being connected with the side plate (220).

3. The fixing bracket according to claim 2, wherein the folding lug (131) is provided with a fixing hole (133), and the fixing hole (133) is used for a fixing piece to pass through so as to connect the folding lug (131) and the side plate (220).

4. The fixing bracket according to claim 1, characterized in that the branch portion (130) is provided with a mounting member (135), the mounting member (135) being adapted to be connected with an insulating cover (250).

5. The fixing bracket according to any one of claims 1 to 4, characterized in that a turn-up part (111) is provided on the bracket body (110) and/or the branch part (130).

6. The fixing bracket according to claim 5, wherein the burring part (111) of the bracket main body (110) is provided with a relief groove (113).

7. A battery module, comprising:

an end plate (210);

a side plate (220), wherein the side plate (220) is connected with the end plate (210), and the end plate (210) and the side plate (220) enclose a containing cavity;

the battery cell (230) is arranged in the accommodating cavity;

-a tab assembly (240), the tab assembly (240) being connected with the battery cell (230);

the fixation bracket (100) of any one of claims 1 to 6, the fixation bracket (100) being connected with the tab assembly (240).

8. The battery module according to claim 7, wherein the tab assembly (240) includes a collecting plate (241), a connecting sheet (242) and a series tab (243), one end of the connecting sheet (242) is connected to the collecting plate (241), and the other end is connected to the series tab (243); the fixed support (100) is connected with the acquisition board (241).

9. The battery module according to claim 7, wherein the side plate (220) is provided with a boss (221), and the boss (221) is connected with the branch portion (130).

10. The battery module according to claim 7, wherein the side plate (220) is provided with a lifting lug (225), and the lifting lug (225) is used for being connected with a case.

11. The battery module according to any one of claims 7 to 10, wherein the battery module (200) further comprises an insulating cover (250), the insulating cover (250) is connected with the fixing bracket (100), and the insulating cover (250) is provided at a side of the fixing bracket (100) remote from the tab assembly (240).