CN218867266U - Battery module - Google Patents

Abstract

The utility model discloses a battery module, which comprises a first end cover, a second end cover and a battery pack arranged between the first end cover and the second end cover; the battery pack comprises a plurality of first electric core assemblies and a plurality of second electric core assemblies which are mutually staggered and axially stacked together; the first battery cell assembly comprises a first bracket and a first battery cell arranged in the first bracket, and the first bracket is provided with a first expansion space for accommodating the first battery cell when the first battery cell is partially expanded; the second electric core subassembly includes the second support and locates the second electric core in the second support, and the second support has second expansion space to hold wherein when supplying second electric core part inflation, because electric core has the expansion space, in the battery module use, utmost point ear can not be dragged yet to the electric core inflation, can not influence the electrical property of battery module. The battery module is reliable in structure, the assembly efficiency of the battery module is improved, and the production safety is enhanced; the reliability of welding of battery module is strengthened, reduces the defective rate of spot welding rosin joint.

Description

Battery module

Technical Field

The utility model relates to a battery technology field especially relates to a battery module.

Background

The battery modules of most production enterprises adopt a welding mode of battery pack, PCB board and epoxy plate pole ear conversion nickel, the fixing mode of the battery modules adopts glass fiber glue for fixing, and the epoxy plate is wrapped and fixed; some manufacturing enterprises adopt the PE bucket to glue fixedly, and the utmost point ear is connected and is adopted the screw fixation, and laser welding is connected fixedly, and the laser changes the tin connection on the nickel.

Adopt foretell battery module mode of making, in the battery module use, the electric core probably takes place the inflation and pulls utmost point ear, leads to the utmost point ear of battery module to drop, influences electrical properties. In addition, the connection reliability between the electric cores is poor, and the tab welding is also poor.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in that, a modified battery module is provided.

The utility model provides a technical scheme that its technical problem adopted is: constructing a battery module comprising a first end cap and a second end cap, and a battery pack disposed between the first end cap and the second end cap; the battery pack comprises a plurality of first electric core assemblies and a plurality of second electric core assemblies which are mutually staggered and axially stacked together;

the first cell assembly comprises a first bracket and a first cell arranged in the first bracket, and the first bracket is provided with a first expansion space for accommodating the first cell when the first cell is partially expanded;

the second battery cell assembly comprises a second bracket and a second battery cell arranged in the second bracket, and the second bracket is provided with a second expansion space for accommodating the second battery cell when the second battery cell is partially expanded.

In some embodiments, the first bracket is in a frame shape, the inner cavity of the first bracket is provided with a first supporting step, the first supporting step defines a first accommodating groove and a second accommodating groove with the first bracket, and the inner cavity of the first supporting step forms the first expansion space;

the second support is in a frame shape, a second support step is arranged in an inner cavity of the second support, a third accommodating groove and a fourth accommodating groove are defined by the second support step, and a second expansion space is formed in the inner cavity of the second support step.

In some embodiments, the first bracket is provided with a first mounting groove for mounting the first cell, and an axial end face of the first mounting groove is provided with the first expansion space;

the second support is provided with a second mounting groove for mounting the second battery cell, and the axial end face of the second mounting groove is provided with a second expansion space.

In some embodiments, the first bracket is provided with a plurality of first buckling parts, and the second bracket is provided with first bulges matched with the first buckling parts;

and/or a plurality of second buckling parts are arranged on the second support, and second bulges matched with the second buckling parts are arranged on the first support.

In some embodiments, the first tab of the first cell is connected to the second tab of the second cell via a connecting tab; the first tab is a positive tab, and the second tab is a negative tab; or the first tab is a negative tab, and the second tab is a positive tab.

In some embodiments, the first end cap and the second end cap are removably connected to the battery pack.

In some embodiments, the battery module further comprises a fastener passing through and connecting the first end cover, the battery pack and the second end cover in sequence.

In some embodiments, the battery module further comprises a BMS assembly including a fixing plate, a BMS plate, a first reinforcing rib plate, and a second reinforcing rib plate;

the first end of the fixing plate is mounted on the first end cover through the first reinforcing rib plate, the second end of the fixing plate is mounted on the second end cover through the second reinforcing rib plate, and the BMS plate is arranged on the fixing plate.

In some embodiments, the battery module further comprises a first bus bar and a second bus bar; one end of the first bus bar is connected with the positive electrode of the battery pack, and the other end of the first bus bar is connected with the BMS component;

one end of the second bus bar is connected with the negative electrode of the battery pack, and the other end of the second bus bar is connected with the BMS module.

In some embodiments, the first end cap is provided with a plurality of first wire slots;

and a plurality of second wire grooves are formed in the second end cover.

Implement the utility model discloses following beneficial effect has: the battery module comprises a first end cover, a second end cover and a battery pack arranged between the first end cover and the second end cover; the battery pack comprises a plurality of first electric core assemblies and a plurality of second electric core assemblies which are mutually staggered and axially stacked together; the first battery cell assembly comprises a first bracket and a first battery cell arranged in the first bracket, and the first bracket is provided with a first expansion space for accommodating the first battery cell when the first battery cell is partially expanded; the second electric core subassembly includes the second support and locates the second electric core in the second support, and the second support has second expansion space to hold wherein when supplying the partial inflation of second electric core, because electric core has expansion space, in the battery module use, utmost point ear can not dragged yet in the electric core inflation, can not influence the electric property of battery module. The battery module is reliable in structure, the assembly efficiency of the battery module is improved, and the production safety is enhanced; the reliability of welding of the battery module is enhanced, and the reject ratio of spot welding and insufficient welding of the module is reduced.

Drawings

In order to explain the technical solution of the present invention more clearly, the present invention will be further described with reference to the accompanying drawings and examples, it should be understood that the following drawings only show some examples of the present invention, and therefore should not be considered as limiting the scope, for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort. In the drawings:

fig. 1 to 3 are schematic structural views of battery modules according to some embodiments of the present invention;

fig. 4 to 5 are schematic structural views of the battery module according to some embodiments of the present invention without a cover;

fig. 6 is a cross-sectional view of a battery module according to some embodiments of the present invention;

fig. 7 to 8 are exploded views of battery modules according to some embodiments of the present invention;

fig. 9 is a schematic diagram of a portion of a battery pack according to some embodiments of the present invention;

fig. 10 is a schematic view of the first bracket and the second bracket according to other embodiments of the present invention.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention, but do not indicate that the device or element referred to must have a specific direction, and thus, should not be construed as limiting the present invention.

It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

Referring to fig. 1 to 9, the present invention shows a battery module, which includes a first end cap 1, a second end cap 2, and a battery pack 3 disposed between the first end cap 1 and the second end cap 2; the battery pack 3 includes a plurality of first core assemblies 31 and a plurality of second core assemblies 32 that are staggered and axially stacked, and the arrangement may be: first electric core subassembly 31, second electric core subassembly 32, first electric core subassembly 31, second electric core subassembly 32. The number of the first electric core assembly 31 and the second electric core assembly 32 may be selected according to actual requirements, and is not particularly limited.

Referring to fig. 6 to 9, the first cell assembly 31 includes a first frame 311 and a first cell 312 disposed in the first frame 311, the first frame 311 has a first expansion space a for accommodating the first cell 312 when the first cell 312 is partially expanded.

The second cell assembly 32 includes a second frame 321 and a second cell 322 disposed in the second frame 321, and the second frame 321 has a second expansion space B for accommodating the second cell 322 when the second cell 322 is partially expanded. Understandably, because electric core has the inflation space, in the battery module use, utmost point ear can not be pulled in the electric core inflation yet, can not influence the electrical property of battery module.

In some embodiments, the first bracket 311 is shaped like a frame, a first supporting step 3111 is disposed in an inner cavity of the first bracket 311, the first supporting step 3111 defines a first receiving cavity a and a second receiving cavity b for the first bracket 311, and the inner cavity of the first supporting step 3111 forms a first expansion space a; preferably, the thickness of the first support step 3111 may be at least 1mm, so that the thickness of the first expansion space a may be at least 1mm.

The second bracket 321 is frame-shaped, a second supporting step 3211 is disposed in an inner cavity of the second bracket 321, the second supporting step 3211 defines a third receiving groove c and a fourth receiving groove d with the second bracket 321, and the inner cavity of the second supporting step 3211 forms a second expansion space B. Preferably, the thickness of the second support step 3211 may be at least 1mm, so that the thickness of the second expansion space B may be at least 1mm.

The third receiving groove c may be disposed toward one side of the second receiving groove b.

The first end cap 1 is provided with a first receiving groove 11 on one side facing the battery pack 3, and the second end cap 2 is provided with a second receiving groove 21 on one side facing the battery pack 3, wherein a part of the first electrical core 312 may be installed in the first receiving groove 11, and another part is installed in the first receiving groove a. A part of the second battery cell 312 is installed in the second accommodating groove b, another part is installed in the third accommodating groove C, and so on, and finally a part of the first battery cell 312 or the second battery cell 322 is accommodated in the second accommodating groove 21.

Preferably, the first end cap 1 and the second end cap 2 are detachably connected to the battery pack 3. Such as by snap-fit or screw-threaded fastening.

Optionally, a plurality of first fastening portions 3112 are disposed on the first bracket 311, and a first protrusion 3213 matched with the first fastening portions 3112 is disposed on the second bracket 321;

and/or a plurality of second buckling parts 3212 are arranged on the second support 321, and a second protrusion 3113 matched with the second buckling parts 3212 is arranged on the first support 311. Understandably, the first bracket 311 and the second bracket 321 can be pre-fixed by being connected by a buckle, the processing of the buckle part and the bulge is simple, and the assembly by the buckle is also convenient. Simultaneously, adopt buckle connected mode, when increase and decrease first support 311 and/or second support 321, the dismouting is also more convenient.

Further, a plurality of third engaging portions 12 are disposed on the first end cap 1, and can be engaged with the first protrusion 3213 or the second protrusion 3113. Or, a plurality of third protrusions are disposed on the first end cap 1, and can be engaged with the first fastening portion 3112 or the second fastening portion 3212.

The second end cap 2 may have a plurality of fourth engaging portions, which may engage with the first protrusion 3213 or the second protrusion 3113. Or, a plurality of fourth protrusions 22 are disposed on the second end cap 2, and can be engaged with the first fastening portion 3112 or the second fastening portion 3212.

Understandably, the first end cap 1, the second end cap 2 and the battery pack 3 can be fixed by a snap connection. The clamping part and the bulge are simple and convenient to process, the clamping buckle is convenient and fast to assemble, and manufacturing and assembling cost can be effectively saved. Simultaneously, adopt buckle connected mode, when first support 311 and/or second support 321 of increase and decrease, the dismouting is also more convenient.

In some embodiments, the battery module further includes a fastener 4 sequentially passing through and connecting the first end cap 1, the battery pack 3 and the second end cap 2.

Preferably, the corners of the first end cover 1 are provided with a plurality of first connecting portions 13, the corners of the second end cover 2 are provided with a plurality of second connecting portions 23, the corners of the first bracket 311 are provided with a plurality of third connecting portions 3114, the corners of the second bracket 321 are provided with a plurality of fourth connecting portions 3214, the fastening member 4 may include a screw rod 41 and a nut 42, the screw rod 41 penetrates through the first connecting portions 13, the second connecting portions 23, the third connecting portions 3114 and the fourth connecting portions 3214, and the screw rod 41 protrudes out of the first connecting portions 13 or the end portion protruding out of the second connecting portions 23 is locked by the nut 42.

Understandably, the screw 41 may be inserted from the first end cap 1 to the second end cap 2 side, or may be inserted from the second end cap 2 to the first end cap 1 side. Preferably, the screw 41 may be an M5 screw.

Further, a first step portion 14 extends from the first connecting portion 13 toward the battery pack 3, an inner cavity of the first step portion 14 communicates with an inner cavity of the first connecting portion 13, and an outer diameter of the first step portion 14 is smaller than or equal to an inner diameter of an inner cavity of the third connecting portion 3114, so that the first step portion 14 is assembled into the inner cavity of the third connecting portion 3114 for limiting and fixing.

A second step portion 3115 extends from the third connecting portion 3114 towards the second support 321, an inner cavity of the second step portion 3115 is communicated with an inner cavity of the third connecting portion 3114, and an outer diameter of the second step portion 3115 is smaller than or equal to an inner diameter of the inner cavity of the fourth connecting portion 3214, so that the second step portion 3115 is mounted in the inner cavity of the fourth connecting portion 3214 for limiting and fixing.

The fourth connecting portion 3214 extends toward the next first bracket 311 or the second end cap 2 to form a third step portion 3215, an inner cavity of the third step portion 3215 is communicated with an inner cavity of the fourth connecting portion 3214, and an outer diameter of the third step portion 3215 is smaller than or equal to an inner diameter of the inner cavity of the third connecting portion 3114 or the second connecting portion 23, so that the second step portion 3115 is mounted in the inner cavity of the third connecting portion 3114 or the second connecting portion 23 for limiting and fixing.

Preferably, the first bracket 311 is further provided with a first positioning groove 3116 on the outer side surface thereof for mounting and fixing the connection piece 33. The outer side surface of the second bracket 321 is further provided with a second positioning slot 3216 for the connection piece 33 to be mounted and fixed.

In some embodiments, the first tab 3121 of the first cell 312 is connected to the second tab 3221 of the adjacent second cell 322 by a connecting sheet 33; the first tab 3121 is a positive tab, and the second tab 3221 is a negative tab; alternatively, the first tab 3121 is a negative tab, and the second tab 3221 is a positive tab, that is, the positive tab and the negative tab of axially adjacent cells may be connected together by the connecting sheet 33.

Preferably, the first tab 3121 of the first cell 312 and the second tab 3221 of the adjacent second cell 322 are fixed together by laser welding through the connecting sheet 33.

Preferably, this connection piece 33 can be pure aluminium material and make, adopts connection piece 33 and laser welding mode, and multiplicable electric core and electric core are connected the reliability, has strengthened overflowing of group battery 3 through connection piece 33 connection, has reduced and has overflowed and generate heat, simultaneously, has solved the problem of 3 solder joint welding reliability of group battery: the battery core lug does not need to be processed by rotating the lug, the laser welding is directly adopted, the nickel rotating frequency is reduced, the reliability is improved, and the lug is directly connected to the connecting sheet 33, so that the problem that the lug is directly butted to cause insufficient welding due to the power and the size error is avoided, and the welding penetration influences the connection.

In some embodiments, the battery module further includes a BMS assembly 5, the BMS assembly 5 including a fixing plate 51, a BMS plate 52, a first reinforcing rib 53, and a second reinforcing rib 54;

a first end of the fixing plate 51 is mounted on the first end cap 1 through a first reinforcing rib plate 53, a second end of the fixing plate 51 is mounted on the second end cap 2 through a second reinforcing rib plate 54, and the BMS board 52 is provided on the fixing plate 51.

Preferably, the fixing plate 51 may be a BMS sheet metal, and a first end of the fixing plate 51 may be mounted on a side of the first end cap 1 facing away from the battery pack 3 through a first reinforcing rib 53. Preferably, a plurality of first positioning protrusions 15 are arranged on the side of the first end cap 1 facing away from the battery pack 3, and the first reinforcing rib plate 53 may be mounted on the first positioning protrusions 15 through fastening bolts or the like, so that the first reinforcing rib plate 53 keeps a certain distance from the first end cap 1. The first end of the fixing plate 51 may be mounted on the upper end of the first reinforcing rib plate 53 by a first bolt 531 or the like. Preferably, the number of the first reinforcing ribs 53 is at least two.

The second end of the fixing plate 51 may be mounted on the side of the second end cap 2 facing away from the battery pack 3 through a second reinforcing rib plate 54. Preferably, the second end cap 2 is provided with a plurality of second positioning protrusions 24 on the side facing away from the battery pack 3, and the second reinforcing rib plate 54 may be mounted on the second positioning protrusions 24 by fastening bolts or the like, so that the second reinforcing rib plate 54 is kept at a certain distance from the second end cap 1. The first end of the fixing plate 51 may be mounted on the upper end of the second reinforcing rib plate 54 by a second bolt 531 or the like.

Understandably, all the electrical components can be firstly fixed on the fixing plate 51, the output of the battery module is connected by adopting flexible connection, and the fixing plate 51 is fixed on the first end cover 1 and the second end cover 2 by the metal plate reinforcing ribs, so that the output connection in the production and processing process is safe and reliable. Meanwhile, all the installation is completed outside, so that the production efficiency is improved, the risk of short circuit in assembly is reduced, and the assembly reliability is improved.

In some embodiments, the battery module further includes a first bus bar 6 and a second bus bar 7; one end of the first bus bar 6 is connected to the positive electrode of the battery pack 3, and the other end is connected to the BMS module 5. Preferably, one end of the first bus bar 6 may be laser welded to the positive electrode of the battery pack 3 through a first connection plate. The positive electrode of the battery pack 3 may be a positive electrode tab formed by connecting the first battery cells 312 and the second battery cells 322.

One end of the second bus bar 7 is connected to the negative electrode of the battery pack 3, and the other end is connected to the BMS module 5. Preferably, one end of the second bus bar 7 may be laser welded to the negative electrode of the battery pack 3 through a second connection plate. The negative electrode of battery pack 3 may be a negative electrode tab formed by connecting first battery cells 312 and second battery cells 322.

In some embodiments, the BMS assembly 5 may further include a fuse 55, an insulation post 56, a relay 57, a third bus bar 58, and a fourth bus bar 59. The fuse 55 is mounted on the fixing plate 51 through an insulating post 56, the relay 57 is mounted on the fixing plate 51, the third bus bar 58 is mounted on one end of the fuse 55, and one end of the fourth bus bar 59 may be connected to the fuse 55 and the other end to the relay 57. One end of the aforementioned first bus bar 6 may be connected to the relay 57, and one end of the second bus bar 7 may be connected to the BMS board 52. Of course, other electronic components may be mounted on the fixing plate 51 and the BMS plate 52.

In some embodiments, the first end cap 1 is provided with a plurality of first wire slots 16, which can be used for installing the first bus bar 6, or other cables such as high voltage cables or communication cables, which can avoid interference of high voltage to low voltage.

The second end cap 2 is provided with a plurality of second wire grooves 25, which can be used for mounting the second bus bar 7, or other cables such as high-voltage cables or communication cables, so that the interference of high voltage to low voltage can be avoided.

Preferably, the bus bar is made of pure aluminum.

In some embodiments, the battery module may further include a surface cover 8, and the surface cover 8 may be detachably mounted on a side of the battery pack 3 where the tabs are exposed, so as to protect the tabs and other components. Preferably, the first end cap 1, the second end cap 2, the first bracket 311, the second bracket 321 and the face cover 8 may be made of ABS + PC plastic.

In some embodiments, the battery module may further include a gasket 9 for supporting and protecting the battery pack 3.

Referring to fig. 10, in other embodiments, the difference from the above embodiments is that the first bracket 311 is provided with a first mounting groove e for mounting the first cell 312, an axial end surface of the first mounting groove e is provided with a first expansion space a, the second bracket 321 is provided with a second mounting groove f for mounting the second cell 322, and an axial end surface of the second mounting groove f is provided with a second expansion space B.

Understandably, the battery module is reliable in structure, the assembly efficiency of the battery module is improved, and the production safety is enhanced; the reliability of welding of the battery module is enhanced, and the reject ratio of spot welding and insufficient welding of the module is reduced.

It is understood that the above examples only represent preferred embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (10)

1. A battery module is characterized by comprising a first end cover (1), a second end cover (2) and a battery pack (3) arranged between the first end cover (1) and the second end cover (2); the battery pack (3) comprises a plurality of first electric core assemblies (31) and a plurality of second electric core assemblies (32) which are mutually staggered and axially stacked together;

the first cell assembly (31) comprises a first support (311) and a first cell (312) arranged in the first support (311), the first support (311) is provided with a first expansion space (A) for accommodating the first cell (312) when the first cell is partially expanded;

the second battery core assembly (32) comprises a second support (321) and a second battery core (322) arranged in the second support (321), and the second support (321) is provided with a second expansion space (B) for accommodating the second battery core (322) when the second battery core (322) is partially expanded.

2. The battery module according to claim 1, wherein the first bracket (311) has a frame shape, an inner cavity of the first bracket (311) is provided with a first supporting step (3111), the first supporting step (3111) defines the first bracket (311) with a first receiving groove (a) and a second receiving groove (b), and the inner cavity of the first supporting step (3111) forms the first expansion space (a);

the second bracket (321) is frame-shaped, a second supporting step (3211) is arranged in an inner cavity of the second bracket (321), the second supporting step (3211) defines a third accommodating groove (c) and a fourth accommodating groove (d) for the second bracket (321), and the inner cavity of the second supporting step (3211) forms the second expansion space (B).

3. The battery module according to claim 1, wherein the first bracket (311) is provided with a first mounting groove (e) for mounting the first battery cell (312), and an axial end surface of the first mounting groove (e) is provided with the first expansion space (a);

the second support (321) is provided with a second mounting groove (f) for mounting the second battery cell (322), and the axial end face of the second mounting groove (f) is provided with a second expansion space (B).

4. The battery module according to claim 1, wherein the first bracket (311) is provided with a plurality of first buckling parts, and the second bracket (321) is provided with first protrusions matched with the first buckling parts;

and/or a plurality of second buckling parts are arranged on the second support (321), and second protrusions matched with the second buckling parts are arranged on the first support (311).

5. The battery module according to claim 1, characterized in that the first tab (3121) of the first cell (312) is connected to the second tab (3221) of the adjacent second cell (322) by a connecting piece (33); the first tab (3121) is a positive tab, and the second tab (3221) is a negative tab; or the first tab (3121) is a negative tab and the second tab (3221) is a positive tab.

6. The battery module according to claim 1, wherein the first end cap (1) and the second end cap (2) are detachably connected to the battery pack (3).

7. The battery module according to claim 1, further comprising a fastening member (4) that is sequentially inserted through and connects the first end cap (1), the battery pack (3), and the second end cap (2).

8. The battery module according to any one of claims 1 to 7, further comprising a BMS assembly (5), wherein the BMS assembly (5) comprises a fixing plate (51), a BMS plate (52), a first rib plate (53), and a second rib plate (54);

the first end of the fixing plate (51) is mounted on the first end cap (1) through the first reinforcing rib plate (53), the second end of the fixing plate (51) is mounted on the second end cap (2) through the second reinforcing rib plate (54), and the BMS plate (52) is arranged on the fixing plate (51).

9. The battery module according to claim 8, further comprising a first bus bar (6) and a second bus bar (7); one end of the first bus bar (6) is connected with the positive electrode of the battery pack (3), and the other end is connected with the BMS module (5);

one end of the second bus bar (7) is connected to the negative electrode of the battery pack (3), and the other end is connected to the BMS module (5).

10. The battery module according to any one of claims 1 to 7, wherein the first end cap (1) is provided with a plurality of first wire grooves;

and a plurality of second wire grooves are formed in the second end cover (2).

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