CN219959291U

CN219959291U - Battery module and battery pack

Info

Publication number: CN219959291U
Application number: CN202320995572.2U
Authority: CN
Inventors: 蔡华俭; 花黄伟
Original assignee: Xinwangda Power Technology Co ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2023-11-03
Anticipated expiration: 2033-04-25

Abstract

The utility model relates to the technical field of batteries, and discloses a battery module and a battery pack, wherein the battery module comprises a shell, a single battery, a cover plate and a separation plate. The housing is provided with a receiving cavity and a first opening which are mutually communicated. The single battery is arranged in the accommodating cavity and is provided with a plurality of single batteries. The cover plate is covered on the first opening and is connected with the shell. The isolation plate is arranged at the first opening and is positioned between the single battery and the cover plate. The cover plate comprises a cover plate main body and a connecting protrusion, wherein the connecting protrusion is provided with a limiting surface and a second section. The isolation board is provided with a clamping groove, and the clamping groove is provided with a groove side wall. After the connecting protrusion is inserted into the clamping groove, the side wall of the groove is matched with the limiting surface and the second section to limit the connecting protrusion in the clamping groove, so that the connecting protrusion is prevented from being separated from the clamping groove, and the cover plate is fixedly connected with the isolation plate. That is, when assembling the battery module, only need make the connection protruding joint groove of inserting can make apron and division board fixed connection, easy operation, the assembly efficiency of battery module is high.

Description

Battery module and battery pack

Technical Field

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

Background

The battery module mainly protects single batteries and provides power energy, and the structure mainly comprises a shell, single batteries, a cover plate and a separation plate, wherein the single batteries are arranged in the shell, the separation plate is used for electric separation and is arranged above the single batteries, and the cover plate is fixedly connected to the separation plate. In the prior art, the mode of fixedly connecting the cover plate and the isolation plate is usually externally added with double-sided adhesive or externally added with structural members, and the cover plate and the isolation plate are connected in such a way that the cover plate and the isolation plate need to be subjected to the process of externally added double-sided adhesive or structural members during connection, so that the operation is complex, and the assembly efficiency of the battery module is low.

Disclosure of Invention

The purpose of the utility model is that: a battery module with high assembly efficiency is provided.

In order to achieve the above object, the present utility model provides a battery module including:

the shell is provided with a containing cavity and a first opening which are communicated with each other;

the plurality of single batteries are arranged in the accommodating cavity;

the cover plate is covered on the first opening and is connected with the shell;

the isolation plate is arranged between the single battery and the cover plate;

the cover plate includes:

a cover plate main body having a first side surface facing the partition plate;

the connecting protrusion is arranged on the first side surface at intervals and comprises a first section, a connecting section and a second section which are sequentially connected along a first direction, the first section is connected with the first side surface, the connecting section is provided with a limiting surface for connecting the first section and the second section, and the extending direction of the limiting surface from the first section to the second section is oblique to the first direction;

the division board orientation one side of first side is equipped with the block groove, connect protruding inserting to be located the block groove, the block groove has continuous groove lateral wall and tank bottom wall, the groove lateral wall with spacing face is leaned on mutually, the second section with tank bottom wall is relative and with the groove lateral wall is leaned on mutually, follows the first direction, the groove lateral wall with spacing face the projection of second section on the plane of perpendicular to the first direction is at least partly overlapped, so that the division board with the apron is spacing in the first direction.

In a specific embodiment of the present utility model, along the second direction, the distance between the second section and the same side of the first section connected to the limiting surface is D ₁ mm, the first direction intersecting the second direction; along the first direction, the side of the first section facing away from the second section has a distance D ₂ mm, satisfy: d is more than or equal to 0.025 ₁ /D ₂ ≤0.16。

In a specific embodiment of the present utility model, the battery module satisfies: d is more than or equal to 0.2 ₁ Less than or equal to 0.5, and/or, 3 less than or equal to D ₂ ≤8。

In a specific embodiment of the present utility model, a relief gap is provided between the second segment and the groove bottom wall along the first direction.

In a particular embodiment of the utility model, the first section, the connecting section and the second section are integrally connected.

In a specific embodiment of the present utility model, the first section, the connecting section and the second section are all a solid of revolution structure, and a revolution center line of the solid of revolution structure is parallel to the first direction.

In a specific embodiment of the present utility model, the cover main body further has an upper surface facing away from the partition board, a cavity is provided inside the connection protrusion, and a second opening communicating with the cavity is provided on the upper surface.

In a specific embodiment of the present utility model, a plurality of first accommodating grooves are further formed on a side, facing the first side, of the partition board, and the plurality of engaging grooves are provided, and at least part of the first accommodating grooves and at least part of the engaging grooves are alternately arranged along the third direction;

the battery module further includes:

the plurality of buses are arranged in the plurality of first accommodating grooves in a one-to-one correspondence mode, and are connected in series with the plurality of single batteries.

In a specific embodiment of the present utility model, a second accommodating groove is further formed on a side of the isolation plate facing the first side surface; a positioning column is also arranged on the isolation plate;

the battery module further includes:

the FPC board is arranged in the second accommodating groove and provided with a positioning hole penetrating along the first direction; the positioning column penetrates through the positioning hole.

The utility model also proposes a battery pack comprising:

a case;

the battery module is arranged in the box body.

Compared with the prior art, the battery module and the battery pack have the beneficial effects that:

in the utility model, the connecting protrusion comprises a first section, a connecting section and a second section which are sequentially connected along a first direction, wherein the connecting section is provided with a limiting surface, and the extending direction of the limiting surface from the first section to the second section is oblique to the first direction. The clamping groove is provided with a groove side wall and a groove bottom wall which are connected. In practical application, apron and division board set up along first direction, connect protruding inserting into the block inslot and spacing face is leaned on with the groove lateral wall mutually, and the second section holds in the block inslot and leans on with the groove lateral wall mutually, groove lateral wall and spacing face, the projection of second section on the plane perpendicular to first direction overlap at least partially, based on this, after connecting protruding inserting into the block inslot, groove lateral wall and spacing face and second section cooperation limit connecting the protruding at the block inslot, and the second section also limits at the block inslot to make division board with the apron is double spacing in first direction, effectively prevents that the connecting protruding breaks away from the block inslot along first direction, so that apron and division board fixed connection. That is, when assembling the battery module, only need make the connection protruding joint groove of inserting can make apron and division board fixed connection, easy operation, the assembly efficiency of battery module is high.

Drawings

Fig. 1 is a 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 block diagram of a cover plate of an embodiment of the present utility model;

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

FIG. 5 is a block diagram of a connection protrusion according to an embodiment of the present utility model;

FIG. 6 is a cross-sectional structural view of a connecting protrusion according to an embodiment of the present utility model;

FIG. 7 is another construction of the connection protrusion of the embodiment of the present utility model;

FIG. 8 is a block diagram of the coupling projection and the engagement groove of the embodiment of the present utility model;

fig. 9 is a structural view of an engagement groove according to an embodiment of the present utility model.

20, a housing; 30. a cover plate; 31. a cover plate main body; 311. a first side; 32. a connection protrusion; 3201. a cavity; 3202. a second opening; 321. a first section; 322. a connection section; 3221. a limiting surface; 323. a second section; 40. a partition plate; 401. a clamping groove; 4011. a groove sidewall; 4012. a bottom wall of the tank; 402. a first accommodating groove; 403. a second accommodating groove; 41. positioning columns; 50. a busbar; 60. an FPC board; 601. positioning holes; 100. avoidance gap; x, a first direction; y, second direction; z, third direction.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "plurality" means two or more, unless specifically defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; the connection may be mechanical connection, direct connection or indirect connection through an intermediate medium, and may be internal connection of two elements or interaction relationship of two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

The term "parallel" in the present utility model includes not only the case of absolute parallelism but also the case of substantially parallelism as is conventionally recognized in engineering; meanwhile, "vertical" includes not only the case of absolute vertical but also the case of substantially vertical as conventionally recognized in engineering. The distances are equal or the angles are equal, which not only includes the absolute equal condition, but also includes the approximate equal condition of the conventional cognition in engineering, and certain errors can exist.

The utility model provides a battery pack, which comprises a box body, wherein a battery module is arranged in the box body.

As shown in fig. 1 to 5, a battery module according to a preferred embodiment of the present utility model includes a case 20, a unit cell, a cap plate 30, and a separation plate 40. Wherein the housing 20 is provided with a receiving cavity and a first opening in communication with each other. The single battery is arranged in the accommodating cavity and is provided with a plurality of single batteries. The cover plate 30 covers the first opening and is connected to the housing 20. The partition plate 40 is disposed at the first opening and between the unit cell and the cap plate 30.

Further, the cap plate 30 includes a cap plate body 31 and a coupling protrusion 32. The partition plate 40 is provided with an engagement groove 401. The coupling protrusion 32 is inserted into the engagement groove 401 to couple the cap plate 30 and the partition plate 40 together.

Specifically, the cover main body 31 has a first side 311 facing the partition plate 40. The connection protrusion 32 is provided with a plurality of connection protrusions and is arranged on the first side surface 311 at intervals, the connection protrusion 32 comprises a first section 321, a connection section 322 and a second section 323 which are sequentially connected along a first direction X, the first section 321 is connected with the first side surface 311, the connection section 322 is connected between the first section 321 and the second section 323, the connection section 322 is provided with a limit surface 3221 for connecting the first section 321 and the second section 323, and the extending direction of the limit surface 3221 from the first section 321 to the second section 323 is obliquely intersected with the first direction X, wherein the extending direction of the limit surface 3221 is the whole extending trend direction.

The engaging groove 401 has a plurality of engaging grooves and is all disposed on one side of the isolation plate 40 facing the first side surface 311, as shown in fig. 9, the engaging groove 401 has a groove side wall 4011 and a groove bottom wall 4012 connected to each other, an included angle between the groove side wall 4011 and the groove bottom wall 4012 is smaller than 90 °, and it should be noted that the included angle between the groove side wall 4011 and the groove bottom wall 4012 is defined by a plane where the groove bottom wall 4012 is located and an overall extending direction of the groove side wall 4011.

In practical applications, the cover 30 and the isolation board 40 are disposed along the first direction X, after the connecting protrusion 32 is inserted into the engaging groove 401, the groove sidewall 4011 abuts against the limiting surface 3221, the groove bottom wall 4012 is opposite to the second section 323, the second section 323 abuts against the groove sidewall 4011, and along the first direction X, the projections of the groove sidewall 4011 and the limiting surface 3221, and the second section 323 on a plane perpendicular to the first direction X at least partially overlap, that is, the projections of the groove sidewall 4011 and the limiting surface 3221 at least partially overlap, and the projections of the groove sidewall 4011 and the second section 323 at least partially overlap. Based on this, the groove sidewall 4011 cooperates with the limiting surface 3221 and the second section to limit the connection protrusion 32 in the engagement groove 401, and the second section is limited in the engagement groove 401, so as to realize dual limiting, prevent the connection protrusion 32 from being separated from the engagement groove 401 along the first direction X, so that the cover plate 30 and the isolation plate 40 are reliably connected. That is, when the battery module is assembled, the cover plate 30 and the separator 40 can be fixedly connected only by inserting the connection protrusion 32 into the engagement groove 401, the operation is simple, and the assembly efficiency of the battery module is high.

In the present utility model, the first section 321, the connecting section 322, and the second section 323 of the connecting projection 32 are integrally connected. The limiting surface 3221 may be a plane or an arc surface; the connecting section 322 may have one, two, three or more limiting surfaces 3221, which cooperate with the engaging grooves 401 to fixedly connect the cover plate 30 to the partition plate 40. As shown in fig. 5, connecting section 322 has one stop face 3221, and as shown in fig. 7, connecting section 322 has two opposite stop faces 3221. The utility model is not limited in this regard.

The present utility model is illustrated with connection section 322 having one stop face 3221. Specifically, the battery module also has a second direction Y, the first direction X intersecting the second direction Y, and in some embodiments, the first direction X being perpendicular to the second direction Y; as shown in fig. 5, in the second direction Y, a secondThe distance between the same side of the segment 323 and the first segment 321 is D ₁ mm, in particular, distance D ₁ Refers to: along the second direction Y, on the same side of the first section 321 and the second section 323, the distance between the connection of the first section 321 and the stop surface 3221 and the connection of the second section 323 and the stop surface 3221. Along the first direction X, the side of the first section 321 and the second section 323 facing away from each other has a distance D ₂ mm, satisfy: d is more than or equal to 0.025 ₁ /D ₂ Less than or equal to 0.16, e.g., D ₁ /D ₂ May be in the range of one or any two of 0.028, 0.035, 0.039, 0.044, 0.048, 0.052, 0.056, 0.066, 0.074, 0.089, 0.096, 0.106, 0.112, 0.120, 0.125, 0.132, 0.140, 0.145, 0.150, 0.155. Wherein D is ₁ /D ₂ Satisfying the relation can make the size and shape of the connection protrusion 32 fit, and ensure the limit effect generated by the connection protrusion 32 fitting with the engagement groove 401, specifically, taking fig. 5 as an example for illustration, the larger the ratio is, the smaller the overall size of the connection protrusion 32 is, and accordingly the lower the production cost is, at this time, the larger the included angle between the limit surface 3221 and the vertical surface is, the better the limit effect generated by the connection protrusion 32 fitting with the engagement groove 401 is, however, since the connection protrusion 32 fits with the engagement groove 401 through the limit engagement, the larger the angle between the limit surface 3221 and the vertical surface is, and accordingly the difficulty of inserting the connection protrusion 32 into the engagement groove 401 is increased. The smaller the ratio, the larger the overall size of the coupling projection 32 is, and the higher the production cost is, and the effect is deteriorated, but the difficulty of inserting the coupling projection 32 into the engagement groove 401 is reduced. Thus D ₁ /D ₂ Satisfying the relation can give consideration to the limit effect and the assembly difficulty of the cooperation of the connecting protrusion 32 and the clamping groove 401.

Preferably, the battery module satisfies: d is more than or equal to 0.2 ₁ Less than or equal to 0.5, and/or, 3 less than or equal to D ₂ And less than or equal to 8 so as to better consider the limit effect of the cooperation of the connecting protrusion 32 and the clamping groove 401 and the assembly difficulty.

Specifically, distance D ₁ The measurement method of (2) is as follows: the cover plate 30 is cut to form the structure shown in figure 6,a first datum line perpendicular to the first side surface 311 is formed on the cutting surface by taking the connection position of the limiting surface 3221 and the first section 321 as a base point, a second datum line perpendicular to the first side surface 311 is formed on the cutting surface by taking the connection position of the limiting surface 3221 and the second section 323 as a base point, wherein the first datum line and the second datum line are both positioned on the cutting surface of the cover plate main body 31, the distance between the first datum line and the second datum line is measured for a plurality of times by adopting a length measuring tool, a plurality of first measuring values are obtained, a first average value of the plurality of first measuring values is obtained, and the first average value is the distance D ₁ 。

Distance D ₂ The measurement method of (2) is as follows: taking the first side 311 as a first reference surface, taking the side of the connecting protrusion 32, which is opposite to the cover plate main body 31, as a second reference surface, measuring the distance between the first reference surface and the second reference surface for multiple times by using a length measuring tool to obtain multiple second measured values, and obtaining a second average value of the multiple second measured values, wherein the second average value is the distance D ₂ 。

In some embodiments, as shown in FIG. 8, a relief gap 100, i.e., a distance D, is provided between the second segment 323 and the tank bottom wall 4012 along the first direction X ₂ Based on the fact that the depth of the clamping groove 401 is smaller than that of the clamping groove 401, after the connecting protrusion 32 is inserted into the clamping groove 401, the first side 311 of the cover plate main body 31 can be attached to the isolation plate 40, no gap exists between the first side 311 and the isolation plate 40, and therefore the battery module is more compact in structure.

In some embodiments, as shown in fig. 1-3 and 8, the cover main body 31 further has an upper surface facing away from the isolation plate 40, and the connecting protrusion 32 is provided with a cavity 3201 therein, and the upper surface is provided with a second opening 3202 communicating with the cavity 3201, specifically, the first section 321, the connecting section 322, and the second section 323 together define the cavity 3201. The connecting protrusion 32 of this structure, the cover plate 30 can be manufactured by means of a suction molding, and the production is convenient.

In other embodiments, the connecting protrusion 32 may not be provided with a solid structure of the cavity 3201, which is not limited by the present utility model.

In other embodiments, first section 321, connecting section 322, and second section 323 are each a solid of revolution structure having a center line of revolution parallel to first direction X. The revolving structure is that the smaller end of the revolving structure is connected with the cover plate main body 31, at this time, the outer wall surface of the connecting section 322 is the limiting surface 3221, based on this, after the connecting protrusion 32 is inserted into the clamping groove 401, the cover plate 30 can be fixedly connected to the isolation plate 40, and the revolving structure can limit the spacing with the isolation plate 40 in the circumferential direction of the connecting protrusion 32, so as to improve the connection reliability of the cover plate 30 and the isolation plate 40. The utility model is not limited in this regard.

In practical application, the battery module further includes a plurality of bus bars 50, and the plurality of bus bars 50 are connected in series with a plurality of unit cells.

In some embodiments, as shown in fig. 2 and fig. 4, a plurality of first accommodating grooves 402 are further formed on a side of the partition board 40 facing the first side 311, and the plurality of bus bars 50 are disposed in the plurality of first accommodating grooves 402 in a one-to-one correspondence manner, so that the electrical isolation effect is good; the clamping grooves 401 are multiple, one clamping groove 401 is a connecting point between the isolation plate 40 and the cover plate 30, at least part of the first accommodating grooves 402 and at least part of the clamping grooves 401 are alternately arranged along the third direction Z, positions between two adjacent first accommodating grooves 402 are fully utilized, and meanwhile, the stability of the fixed connection between the cover plate 30 and the isolation plate 40 can be improved.

In practical application, the battery module further comprises an FPC board 60, and the FPC board 60 is connected with the busbar 50 to collect working parameters such as voltage of the single battery.

In some embodiments, as shown in fig. 2 and fig. 4, a second accommodating groove 403 is further formed on a side of the partition plate 40 facing the first side 311; the isolation plate 40 is also provided with positioning columns 41, and the positioning columns 41 are provided with a plurality of positioning columns and are arranged on the second accommodating groove 403 at intervals; the FPC board 60 is disposed in the second accommodating groove 403, and the FPC board 60 is provided with a plurality of positioning holes 601 penetrating along the first direction X; the positioning posts 41 are correspondingly arranged in the positioning holes 601 in a penetrating manner, namely, the positioning posts 41 are in one-to-one correspondence with the positioning holes 601, so that the FPC board 60 can be positioned and installed on the isolation board 40, the FPC board 60 can be stably installed, and shaking of the FPC board 60 during practical application can be avoided.

Specifically, the second accommodating groove 403 is elongated, the length direction thereof is parallel to the third direction Z, and both sides of the length direction of the second accommodating groove 403 are provided with the first accommodating groove 402 and the engaging groove 401.

In summary, the cover plate 30 of the battery module comprises the connecting protrusion 32, the isolation plate 40 is provided with the clamping groove 401, the connecting protrusion 32 and the clamping groove 401 are matched in a limiting clamping manner, when the battery module is assembled, the cover plate 30 and the isolation plate 40 can be fixedly connected only by inserting the connecting protrusion 32 into the clamping groove 401, the operation is convenient, and the assembly efficiency of the battery module is high.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.

Claims

1. A battery module, comprising:

a housing (20) provided with a receiving chamber and a first opening which are communicated with each other;

the plurality of single batteries are arranged in the accommodating cavity;

a cover plate (30) which is arranged on the first opening in a covering way and is connected with the shell (20);

a separator (40) provided between the unit cell and the cover plate (30); it is characterized in that the method comprises the steps of,

the cover plate (30) includes:

a cover main body (31) having a first side surface (311) facing the partition plate (40);

the connecting protrusions (32) are arranged on the first side face (311) at intervals, the connecting protrusions (32) comprise a first section (321), a connecting section (322) and a second section (323) which are sequentially connected along a first direction (X), the first section (321) is connected with the first side face (311), the connecting section (322) is provided with a limiting surface (3221) for connecting the first section (321) and the second section (323), and the limiting surface (3221) is obliquely intersected with the first direction (X) from the extending direction of the first section (321) to the extending direction of the second section (323);

the isolation plate (40) is provided with a clamping groove (401) towards one side of the first side face (311), the connecting protrusion (32) is inserted into the clamping groove (401), the clamping groove (401) is provided with a groove side wall (4011) and a groove bottom wall (4012) which are connected, the groove side wall (4011) is abutted to the limiting surface (3221), the second section (323) is opposite to the groove bottom wall (4012) and is abutted to the groove side wall (4011), the groove side wall (4011) is provided with the groove bottom wall (4012) along the first direction, and the projections of the groove side wall (4011) and the limiting surface (3221) and the second section (323) on a plane perpendicular to the first direction are at least partially overlapped, so that the isolation plate (40) and the cover plate (30) are limited in the first direction (X).

2. The battery module according to claim 1, wherein a distance between the second segment (323) and the same side of the first segment (321) connected to the limiting surface (3221) in the second direction (Y) is D ₁ mm, the first direction (X) intersecting the second direction (Y); along the first direction (X), the side of the first section (321) facing away from the second section (323) has a distance D ₂ mm, satisfy: d is more than or equal to 0.025 ₁ /D ₂ ≤0.16。

3. The battery module according to claim 2, wherein the battery module satisfies: d is more than or equal to 0.2 ₁ Less than or equal to 0.5, and/or, 3 less than or equal to D ₂ ≤8。

4. The battery module according to claim 1, characterized in that an avoidance gap (100) is provided between the second section (323) and the tank bottom wall (4012) in the first direction (X).

5. The battery module according to claim 1, wherein the first section (321), the connection section (322), and the second section (323) are integrally connected.

6. The battery module according to claim 1, wherein the first section (321), the connecting section (322), and the second section (323) are each a solid of revolution structure, a center line of revolution of which is parallel to the first direction (X).

7. The battery module according to claim 1, wherein the cover body (31) further has an upper surface facing away from the separator (40), the first section (321), the connecting section (322), and the second section (323) defining a cavity (3201), the upper surface being provided with a second opening (3202) communicating with the cavity (3201).

8. The battery module according to claim 1, wherein a plurality of first accommodating grooves (402) are further formed in a side, facing the first side surface (311), of the separator (40), the engaging grooves (401) are provided in plurality, and at least part of the first accommodating grooves (402) and at least part of the engaging grooves (401) are alternately arranged along a third direction (Z);

the battery module further includes:

the plurality of bus bars (50) are arranged in the plurality of first accommodating grooves (402) in a one-to-one correspondence manner, and the plurality of bus bars (50) are connected in series with the plurality of single batteries.

9. The battery module according to claim 1, wherein a second accommodating groove (403) is further formed in a side of the separator (40) facing the first side surface (311); a positioning column (41) is further arranged on the isolation plate (40);

the battery module further includes:

an FPC board (60) arranged in the second accommodating groove (403), wherein a positioning hole (601) penetrating along a first direction (X) is formed in the FPC board (60); the positioning column (41) penetrates through the positioning hole (601).

10. A battery pack, comprising:

a case;

the battery module according to any one of claims 1 to 9, which is provided in the case.