Module shell and battery module

Abstract

The utility model belongs to the technical field of batteries, and discloses a module shell and a battery module, the module shell comprises a shell body, a top plate and a protective cover, the shell body is provided with a containing cavity for installing a battery cell, the containing cavity is provided with an opening, one side of the battery cell close to the opening is provided with a flexible circuit board, the top plate is installed in the opening, and the protective cover is installed on the top plate. The protective cover comprises a first connecting part and a second connecting part which are connected, the first connecting part is connected with the top plate, and the second connecting part is detachably connected with the side wall of the shell body. The second connecting part can be disconnected from the shell body, and the protective cover can be folded relative to the top plate to expose the flexible circuit board. According to the module shell, the flexible circuit board can be conveniently overhauled and maintained, the weight is light, and the manufacturing cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a module housing and a battery module. Background Art

[0002] As a key component in the module, the flexible printed circuit board (FPC for short) is also one of the few flexible and vulnerable parts in the module. Its maintainability has always been a difficult problem that battery manufacturers are eager to solve. Due to the compact structure and limited space in the module, adding the maintainable function of the FPC will be restricted by negative impacts such as the decrease in weight energy density and the reduction of space utilization rate in the module design. However, the failure rate of the FPC and the scrapping of the entire module or even the entire package caused by the maintainability are immeasurable in terms of losses.

[0003] The housing of the existing battery module usually adopts a hexahedron fully enclosed structure, that is, the housing includes a top cover, a bottom wall plate and four side wall plates. One end of the four side wall plates is welded to the bottom wall plate, and the other end is detachably connected to the top cover through a plurality of connecting bolts. When it is necessary to repair the flexible circuit wall plate, the top cover needs to be removed from the four side wall plates to expose the entire flexible circuit wall plate. This method takes a long time, and when the entire top cover is removed, it is also necessary to move the top cover to other places for temporary placement, which is likely to cause damage to the top cover. Summary of the Utility Model

[0004] The first object of the utility model is to provide a module housing which can facilitate the repair and maintenance of the flexible printed circuit board, and has a light weight and a low manufacturing cost.

[0005] The second object of the utility model is to provide a battery module which can facilitate the repair and maintenance of the flexible printed circuit board and has a long service life.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] The utility model discloses a module housing, including: a housing body which has a receiving cavity for installing battery cells, the receiving cavity has an opening, and a flexible printed circuit board is arranged on one side of the battery cell close to the opening; a top plate which is installed on the opening; a protective cover which includes a first connecting part and a second connecting part connected to each other, the first connecting part is connected to the top plate, and the second connecting part is detachably connected to the side wall of the housing body; wherein: the second connecting part can be separated from the connection with the housing body, and the protective cover can be folded relative to the top plate to expose the flexible printed circuit board.

[0008] In some embodiments, the first connecting portion includes a connecting body and a connecting edge. The connecting body is connected to the second connecting portion, and the connecting edge abuts against and is connected to the top plate.

[0009] In some specific embodiments, the surface of the connecting body facing away from the flexible circuit board and the surface of the connecting edge facing away from the flexible circuit board are spaced apart, and the surface of the connecting body facing away from the flexible circuit board is higher than the surface of the top plate facing away from the battery cell.

[0010] In some specific embodiments, the connecting edge is connected to the top plate through a first connecting member, or; the connecting edge is adhered to the top plate, or: the connecting edge is snap-connected to the top plate.

[0011] In some embodiments, the first connecting portion and the second connecting portion are integrally formed.

[0012] In some embodiments, the protective cover is a plastic plate, and the plastic plate can be folded relative to the top plate to expose the flexible circuit board.

[0013] In some embodiments, the second connecting portion is connected to the side wall of the housing body through a second connecting member.

[0014] In some embodiments, the housing body includes a bottom plate, two end plates spaced apart along a first direction, and two side plates spaced apart along a second direction; the two end plates and the two side plates are respectively connected to the bottom plate; there are two protective covers, the second connecting portions of the two protective covers are respectively connected to the two side plates, and the first connecting portions of the two protective covers are respectively connected to both sides of the top plate along the second direction.

[0015] In some embodiments, one end of the top plate along the first direction has a notch, and the protective cover has a protruding portion corresponding to the notch.

[0016] The present utility model also discloses a battery module, including the module housing, the battery cell, and the flexible circuit board as described above, and the battery cell and the flexible circuit board are both arranged in the module housing.

[0017] Advantages of the module housing of the present utility model: Since the second connecting portion is detachably connected to the side wall of the housing body, during the actual working process, when the flexible circuit board inside the module housing needs to be maintained, it is only necessary to disconnect the second connecting portion from the housing body and fold the protective cover relative to the top plate, then the flexible circuit board can be exposed. Compared with the prior art solution of removing the entire top cover, the module housing of this embodiment is provided with a protective cover, which not only has the functions of dust and water protection, but also has detachable and foldable functions, simplifies the maintenance of the flexible circuit board, and will not cause damage to other components during the maintenance process. At the same time, in the prior art solution, the side wall plate needs to be higher than the battery cell in the height direction, while in this embodiment, since the second connecting portion of the protective cover is connected to the side wall of the housing body, compared with the side wall plate of the prior art, the height of the side wall of the housing body in this embodiment is smaller, and the strengthening structure on the side wall of the housing body is smaller, thereby reducing the weight of the module housing and the manufacturing cost of the module housing.

[0018] Advantages of the battery module of the present utility model: Due to having the module housing described above, this battery module can facilitate the inspection and maintenance of the flexible circuit board and has a relatively long service life.

[0019] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the module housing according to Embodiment 1 of the present utility model;

[0021] Figure 2 is Figure 1 a schematic diagram of the partial structure of the module housing shown and the flexible circuit board;

[0022] Figure 3 is Figure 2 a schematic exploded view of the structure shown;

[0023] Figure 4 is Figure 2 an enlarged schematic view of the circled area A;

[0024] Figure 5 is a schematic diagram of the partial structure of the module housing and the flexible circuit board according to Embodiment 2 of the present utility model.

[0025] Reference Signs:

[0026] 100, housing body; 110, bottom plate; 120, side plate; 121, fixed convex edge; 130, end plate;

[0027] 200, top plate; 210, notch;

[0028] 300. Protective cover; 310. First connecting part; 311. Connecting body; 312. Connecting edge; 320. Second connecting part; 321. Connecting plate; 322. Fixed edge; 301. Protruding part

[0029] 400. Second connecting member;

[0030] 500. Flexible circuit board;

[0031] 600. Output pole. Detailed implementation manners

[0032] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that, for the sake of convenience of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0033] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0034] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above the top of", and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "below", "below the bottom of", and "under the bottom of" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0035] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, 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 should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0036] Embodiment 1:

[0037] The utility model discloses a module housing. Referring to Figures 1-5 as shown, the module housing includes a housing body 100, a top plate 200 and a protective cover 300. The housing body 100 has a receiving cavity for installing battery cells. The receiving cavity has an opening. A flexible circuit board 500 is provided on one side of the battery cell close to the opening. The top plate 200 is installed at the opening. The protective cover 300 includes a first connecting portion 310 and a second connecting portion 320 connected to each other. The first connecting portion 310 is connected to the top plate 200, and the second connecting portion 320 is detachably connected to the side wall of the housing body 100. It can be understood that since the second connecting portion 320 is detachably connected to the side wall of the housing body 100, during the actual working process, when it is necessary to maintain the flexible circuit board 500 inside the module housing, only the second connecting portion 320 needs to be disconnected from the housing body 100, and then the protective cover 300 is folded relative to the top plate 200 to expose the flexible circuit board 500. Compared with the prior art solution of removing the entire top cover, the module housing of this embodiment is provided with a protective cover 300. The protective cover 300 has both dust-proof, waterproof and insulation functions, and also has detachable and foldable functions, simplifies the maintenance of the flexible circuit board 500, and will not cause damage to other components during the maintenance process. At the same time, in the prior art solution, the side wall plate needs to be higher than the battery cell in the height direction. In this embodiment, since the second connecting portion 320 of the protective cover 300 is connected to the side wall of the housing body 100, compared with the side wall plate of the prior art, the height of the side wall of the housing body 100 in this embodiment is smaller, and there are fewer strengthening structures on the side wall of the housing body 100, reducing the weight of the module housing, thereby reducing the manufacturing cost of the module housing.

[0038] Referring to Figure 1As shown, the housing body 100 includes a bottom plate 110, two end plates 130 spaced apart in the first direction, and two side plates 120 spaced apart in the second direction. The two end plates 130 and the two side plates 120 are respectively connected to the bottom plate 110. There are two protective covers 300. The second connecting portions 320 of the two protective covers 300 are respectively connected to the two side plates 120, and the first connecting portions 310 of the two protective covers 300 are respectively connected to both sides of the top plate 200 along the second direction. Splitting the housing body 100 into the bottom plate 110, the two end plates 130 and the two side plates 120 can facilitate the manufacture of the housing body 100 and is beneficial to the lightweight design of the entire module housing. Usually, two flexible circuit boards 500 are provided in the battery module, which are respectively connected to the positive electrode posts of multiple battery cells and the negative electrode posts of multiple battery cells in the battery cell module. By providing two protective covers 300, it is convenient to separately inspect and replace the two flexible circuit boards 500. Of course, it should be noted here that in an alternative embodiment of the present utility model, the bottom plate 110, the side plates 120 and the end plates 130 can also be integrally formed parts, rather than the split structure described above. In addition, if only one flexible circuit board 500 is provided in the battery cell module, the corresponding protective cover 300 is also one. During the actual connection process, one of the two side plates 120 is directly detachably connected to the top plate 200, and the other side plate 120 is connected to the protective cover 300.

[0039] Reference Figure 2 and Figure 3 As shown, the first connecting portion 310 includes a connecting body 311 and a connecting edge 312. The connecting body 311 is connected to the second connecting portion 320, and the connecting edge 312 abuts against and is connected to the top plate 200. The connecting body 311 and the connecting edge 312 are integrally formed structures. It can be understood that the connecting body 311 covers the entire flexible circuit board 500 and can provide good protection for the flexible circuit board 500. By providing the connecting edge 312 to abut against and be connected to the top plate 200, on the one hand, it can improve the connection stability between the first connecting portion 310 and the top plate 200. On the other hand, there is an overlapping part between the first connecting portion 310 and the top plate 200, avoiding the appearance of docking gaps between the top plate 200 and the first connecting portion 310, thereby being beneficial to improving the connection stability between the top plate 200 and the first connecting portion 310.

[0040] Further, reference Figure 4As shown, the surface of the connecting body 311 facing away from the flexible circuit board 500 and the surface of the connecting edge 312 facing away from the flexible circuit board 500 are spaced apart, and the surface of the connecting body 311 facing away from the flexible circuit board 500 (i.e., the upper surface) is higher than the surface of the top plate 200 facing away from the battery cell (i.e., the upper surface). It can be understood that since the upper surface of the top plate 200 is lower than the upper surface of the connecting body 311, in the actual installation process, when the top plate 200 is installed, the edge of the top plate 200 extending in the first direction can abut against the part where the connecting body 311 is connected to the connecting edge 312, and the edge of the top plate 200 extending in the second direction is fixed to the end plate 130 (the fixing method can be welding, bonding or other connection methods). In this way, the clamping of the protective cover 300 can be realized, and there is no docking gap between the top plate 200 and the connecting body 311, so there is no need for glue application. Thus, the installation of the top plate 200 is facilitated, which is conducive to simplifying the assembly of the module housing.

[0041] Optionally, the first connecting portion 310 and the second connecting portion 320 are integrally formed. It can be understood that the first connecting portion 310 and the second connecting portion 320 are integrally formed, which can facilitate the manufacture of the protective cover 300, thereby helping to reduce the manufacturing cost of the module housing

[0042] Optionally, a transition fillet is formed at the connection position of the first connecting portion 310 and the second connecting portion 320. A transition fillet is formed at the connection position of the first connecting portion 310 and the second connecting portion 320, which can reduce the stress concentration at the connection position of the first connecting portion 310 and the second connecting portion 320, meet the toughness requirements for multiple folding, reduce the probability of fracture at the connection position of the first connecting portion 310 and the second connecting portion 320, and thus extend the service life of the protective cover 300.

[0043] Optionally, the protective cover 300 is a plastic plate, and the plastic plate can be folded relative to the top plate 200 to expose the flexible circuit board 500. It can be understood that the protective cover 300 is made of plastic material, which can meet the lightweight design requirements of the module housing, is conducive to increasing the grouping rate of the battery module, and for the pressure relief of thermal runaway, since the plastic will melt at high temperature, the pressure relief path is also more friendly, which is conducive to the rapid pressure relief of the battery module. In addition, the protective cover 300 is a plastic plate and has good insulation properties, which can better avoid the phenomenon of short circuit of the flexible circuit board 500. Further optionally, the plastic material is selected as PP, which has good forming ability, stable and reliable structure, lighter weight, lower cost, and can better meet the toughness requirements for multiple folding. Of course, it should be supplemented here that in other embodiments of the present invention, the protective cover 300 can also be selected according to actual needs.

[0044] Reference Figure 3As shown, the second connecting part 320 is connected to the side panel 120 through the second connecting member 400. It is understandable that because the force direction is different from that of the top plate 200, the side panel 120 is susceptible to the mechanical movement of vibration and impact, and multi-directional forces will act on this position. The second connecting member 400 is used to connect the second connecting part 320 to the side panel 120. On the one hand, it can improve the connection stability between the second connecting part 320 and the side panel 120, and on the other hand, it is convenient to disassemble the second connecting part 320 and the side panel 120, thereby facilitating the inspection of the flexible circuit board 500. Optionally, the second connecting member 400 can be any one of a screw, a rivet and a pin. Preferably, the second connecting member 400 is a plastic rivet. Plastic rivets are light and easy to operate, and can be disassembled and assembled manually, so they are good fasteners.

[0045] refer to Figure 3 As shown, the top plate 200 has a notch 210 at one end along the first direction, and the protective cover 300 has a protrusion 301 arranged corresponding to the notch 210. It can be understood that in the actual installation process, the top plate 200 will be provided with a mark for identifying the total positive and negative poles of the battery module, the top plate 200 has a notch 210 at one end along the first direction, and the protective cover 300 has a protrusion 301 arranged corresponding to the notch 210. The cooperation between the protrusion 301 and the notch 210 can play a fool-proof role and prevent the operator from installing the top plate 200 upside down. It should be noted that the number of notches 210 can be determined according to the number of protective covers 300. Since the number of protective covers 300 in this embodiment is two, the number of notches 210 on the top plate 200 is two. In an alternative embodiment, only one protective cover 300 is provided, and the corresponding notch 210 on the top plate 200 is also one.

[0046] Embodiment 2:

[0047] The structure of the module housing of this embodiment is basically the same as that of the first embodiment. Figure 5 As shown, the side plate 120 has a fixed convex edge 121 arranged along the first direction, and the second connecting portion 320 includes a connecting plate 321 and a fixed edge 322 connected to each other, and the connecting plate 321 and the fixed edge 322 are an integrally formed structure. The fixed edge 322 is connected to the fixed convex edge 121 through a second connecting member 400. It should be supplemented that, Figure 5 The fixed edge 322 is arranged on the side of the connecting plate 321 facing the flexible circuit board 500 . In an alternative embodiment of the present invention, the fixed edge 322 may also be arranged on the side of the connecting plate 321 facing away from the flexible circuit board 500 .

[0048] Embodiment three:

[0049] The structure of the module housing in this embodiment is basically the same as that in the first embodiment. The difference is that the connecting edge 312 and the top plate 200 in this embodiment are detachably connected by connecting screws.

[0050] Embodiment Four:

[0051] The structure of the module housing in this embodiment is basically the same as that in the first embodiment. The difference is that the surface of the connecting body 311 facing away from the flexible circuit board 500 and the surface of the connecting edge 312 facing away from the flexible circuit board 500 are spaced apart, and the surface of the connecting body 311 facing away from the flexible circuit board 500 (i.e., the upper surface) is flush with the surface of the top plate 200 facing away from the battery cell (i.e., the upper surface). Sealant is filled in the docking gap between the connecting body 311 and the top plate 200 to achieve their bonding. Specifically, during the actual assembly process, the connecting edge 312 is abutted against the top plate 200, and then sealant is applied towards the docking gap between the connecting edge 312 and the top plate 200 to achieve their connection, which can ensure the connection firmness and connection tightness between the connecting edge 312 and the top plate 200. In addition, it can also ensure that when the second connecting portion 320 is folded, the connecting edge 312 will not be disconnected from the top plate 200, thereby avoiding damaging the stable connection between the first connecting portion 310 and the top plate 200 when maintaining the flexible circuit board 500.

[0052] Embodiment Five:

[0053] The structure of the module housing in this embodiment is basically the same as that in the first embodiment. The difference is that the connecting edge 312 and the top plate 200 are snap-connected. Specifically, one of the connecting edge 312 and the top plate 200 is provided with a snap projection and / or a snap groove, and the other of the connecting edge 312 and the top plate 200 is provided with a snap projection and / or a snap groove, and the connecting edge 312 and the top plate 200 are connected by the snap connection of the snap projection and the snap groove. More specifically, in some embodiments, the connecting edge 312 is provided with a snap projection, and the top plate 200 is provided with a snap groove; in some embodiments, the connecting edge 312 is provided with a snap groove, and the top plate 200 is provided with a snap projection; in some embodiments, the connecting edge 312 is provided with a first snap projection and a second snap groove; the top plate 200 is provided with a first snap groove and a second snap projection, and the first snap projection can cooperate with the first snap groove, and the second snap projection can cooperate with the second snap groove.

[0054] The advantages of the module housing in the above embodiments are as follows:

[0055] First: It is convenient to repair and replace the flexible circuit board 500, reduces the after-sales maintenance cost of the battery module, reduces the material consumption of the battery housing, and realizes cost reduction and weight reduction of the module housing;

[0056] Second: The traditional metal cover plate on the top of the flexible circuit board 500 is changed to a plastic part, improving the insulation reliability;

[0057] Third: Replace the traditional metal cover plate on the top of the flexible circuit board 500 with a plastic part. In the case of thermal runaway, the cover plate melts, which is beneficial to the exhaust of the battery module and improves the thermal safety reliability.

[0058] The present utility model also discloses a battery module, which includes a module housing, battery cells, and a flexible circuit board 500 as described above. The battery cells and the flexible circuit board 500 are both located inside the module housing. Due to the module housing described above, the battery module can facilitate the inspection and maintenance of the flexible circuit board 500 and has a long service life.

[0059] Optionally, the battery cells are fixed in the accommodation cavity through a fixing structure. Thus, the stability of the battery cells in the accommodation cavity can be improved, and the shaking of the battery cells in the accommodation cavity can be avoided, thereby reducing the impact of the battery cells on the end plate 130, the top plate 200, and the side plate 120, and thus improving the stability of the battery module. It should be added that the fixing structure can be an adhesive layer for fixing the battery cells, or a limiting plate connected to the shell body 100 and used for limiting the battery cells, or other structures capable of fixing the battery cells according to actual needs.

[0060] Optionally, the battery module further includes an output terminal 600 electrically connected to the flexible circuit board 500. The output terminal 600 is located outside the module housing and is arranged at one end of the end plate 130 close to the side plate 120. It can be understood that the output terminal 600 is an output structure for connecting the battery module to an external electrical device. Arranging the output terminal 600 at one end of the end plate 130 close to the side plate 120 can facilitate the power output of the battery module. Of course, it should be additionally noted here that in other embodiments of the present utility model, the output terminal 600 can also be arranged at one end of the side plate 120 close to the end plate 130 according to the installation space and use environment of the battery module, or directly arranged above the top plate 200 or other positions, and is not limited to the foregoing limitations.

[0061] In the description of this specification, the descriptions referring to terms such as "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0062] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A module housing, characterized in that: include: A shell body (100), the shell body (100) having a housing cavity for installing a battery cell, the housing cavity having an opening, and a flexible circuit board (500) being provided on a side of the battery cell close to the opening; A top plate (200), the top plate (200) being mounted on the opening; A protective cover (300), the protective cover (300) comprising a first connecting portion (310) and a second connecting portion (320) connected to each other, the first connecting portion (310) being connected to the top plate (200), and the second connecting portion (320) being detachably connected to the side wall of the shell body (100); wherein: the second connecting portion (320) can be detached from the connection with the shell body (100), and the protective cover (300) can be folded relative to the top plate (200) to expose the flexible circuit board (500).

2. The module housing according to claim 1, characterized in that: The first connection part (310) comprises a connection body (311) and a connection edge (312), the connection body (311) is connected to the second connection part (320), and the connection edge (312) abuts against the top plate (200) and is connected to the top plate (200).

3. The module housing according to claim 2, characterized in that: The surface of the connecting body (311) facing away from the flexible circuit board (500) is spaced apart from the surface of the connecting edge (312) facing away from the flexible circuit board (500), and the surface of the connecting body (311) facing away from the flexible circuit board (500) is higher than the surface of the top plate (200) facing away from the battery cell.

4. The module housing according to claim 2, characterized in that: The connecting edge (312) is connected to the top plate (200) via a first connecting member, or; The connecting edge (312) is bonded to the top plate (200), or; The connecting edge (312) is snap-connected to the top plate (200).

5. The module housing according to any one of claims 1 to 4, characterized in that: The first connecting portion (310) and the second connecting portion (320) are integrally formed parts.

6. The module housing according to any one of claims 1 to 4, characterized in that: The protective cover (300) is a plastic plate, and the plastic plate can be folded relative to the top plate (200) to expose the flexible circuit board (500).

7. The module housing according to any one of claims 1 to 4, characterized in that: The second connecting portion (320) is connected to the side wall of the shell body (100) via a second connecting member (400).

8. The module housing according to any one of claims 1 to 4, characterized in that: The shell body (100) includes a bottom plate (110), two end plates (130) spaced apart along a first direction, and two side plates (120) spaced apart along a second direction; the two end plates (130) and the two side plates (120) are respectively connected to the bottom plate (110); there are two protective covers (300), the second connecting parts (320) of the two protective covers (300) are respectively connected to the two side plates (120), and the first connecting parts (310) of the two protective covers (300) are respectively connected to the two sides of the top plate (200) along the second direction.

9. The module housing according to any one of claims 1 to 4, characterized in that: The top plate (200) has a notch (210) at one end along the first direction, and the protection cover (300) has a protruding portion (301) arranged corresponding to the notch (210).

10. A battery module, characterized in that: It comprises a module housing, a battery cell and a flexible circuit board (500) as claimed in any one of claims 1 to 9, wherein the battery cell and the flexible circuit board (500) are both located in the module housing.

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