CN216354633U - Battery cell module of battery pack and battery pack - Google Patents

Abstract

The utility model discloses a battery cell module of a battery pack and the battery pack with the same, wherein the battery cell module of the battery pack comprises: the battery cell comprises a battery cell base and a bus bar, wherein the battery cell base is internally provided with an accommodating space, and a plurality of mounting grooves are formed in the inner bottom surface of the battery cell base; the bus bar is arranged on the inner bottom surface of the battery cell base and is accommodated in the installation groove, a part of the bus bar protrudes upwards out of the installation groove, and the installation groove is suitable for limiting the horizontal movement of the bus bar. Through using above-mentioned technical scheme, do benefit to the arrangement of carrying out the busbar, simple structure easily constructs, and does benefit to and reduces manufacturing and assembly cost.

Description

Battery cell module of battery pack and battery pack

Technical Field

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

Background

With the national vigorous popularization of new energy fields, electric vehicles have become the mainstream trend in the future. The power battery pack is used as a power supply component which is the most core of the whole vehicle, and determines key indexes of driving range, cost, service life, safety, maintainability and the like of the whole vehicle.

In the related art, a bus bar support is generally adopted in a battery pack to position a bus bar so as to ensure that the internal structure of the power battery pack is more stable, but the bus bar support occupies a larger space, and the bus bar and a battery cell need to be connected in other forms such as welding or soldering, so that the processing cost and the weight of the battery pack are increased.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide a cell module of a battery pack, which facilitates arrangement of a bus bar, has a simple structure, is easy to construct, and facilitates reduction of manufacturing and assembling costs.

Another object of the present invention is to provide a battery pack.

According to the battery cell module of the battery pack of the embodiment of the utility model, the battery cell module comprises: the battery cell comprises a battery cell base and a bus bar, wherein the battery cell base is internally provided with an accommodating space, and a plurality of mounting grooves are formed in the inner bottom surface of the battery cell base; the bus bar is arranged on the inner bottom surface of the battery cell base and is accommodated in the installation groove, a part of the bus bar protrudes upwards out of the installation groove, and the installation groove is suitable for limiting the horizontal movement of the bus bar.

According to the battery cell module of the battery pack, the arrangement of the bus bar is facilitated, the structure is simple, the structure is easy, and the reduction of manufacturing and assembling costs is facilitated.

In addition, the battery cell module of the battery pack according to the above embodiment of the present invention may further have the following additional technical features:

in some embodiments, the ratio of the depth of the mounting groove to the thickness of the bus bar is 1/2-1/3.

In some embodiments, the plurality of mounting grooves are arranged in a plurality of mounting groove sets at the cell base, and the plurality of mounting groove sets are arranged at intervals in the transverse direction, and each mounting groove set comprises a plurality of mounting grooves arranged in the longitudinal direction on the inner bottom surface of the cell base.

In some embodiments, the plurality of mounting groove sets includes a first groove set and a second groove set, the first groove set includes two mounting groove columns adjacently arranged in the transverse direction, the second groove set includes one mounting groove column, and each mounting groove column includes a plurality of mounting grooves arranged at intervals in the longitudinal direction.

In some embodiments, the first slot group further comprises mounting slots longitudinally opposite to the two mounting slot rows and extending in the transverse direction, and the mounting slots in the mounting slot rows both extend in the longitudinal direction.

In some embodiments, the first groove group is configured as a "U" shape, the first groove group includes a plurality of groove openings, and the opening directions of two adjacent groove groups are opposite.

In some embodiments, a plurality of the first and second slot sets are disposed on the cell base.

In some embodiments, the second groove sets are disposed on the cell base along two lateral sides, and at least one first groove set is disposed between two second groove sets.

In some embodiments, a cross beam and a longitudinal beam are disposed in the cell base, the cross beam extends in a transverse direction and the longitudinal beam extends in a longitudinal direction, the cross beam and the longitudinal beam are disposed in the mounting seat in a crossing manner, and a gap is formed between the cross beam and the longitudinal beam and an inner bottom surface of the cell base.

In some embodiments, the cross beam and the longitudinal beam are fixedly connected or detachably connected to the cell base.

The battery pack according to an embodiment of the present invention includes: the battery comprises a lower shell, a battery cell module and an upper shell, wherein a module space is arranged on the lower shell; the battery cell module is arranged in the module space and is the battery cell module of the battery pack; the upper shell is arranged on the lower shell so as to seal the module in the module space.

The battery pack provided by the embodiment of the utility model has a simple structure, is easy to construct, is beneficial to reducing the manufacturing and assembling cost, and realizes the light weight of the battery pack.

Drawings

Fig. 1 is an exploded view of a battery pack according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a cell module according to an embodiment of the present invention.

Fig. 3 is an exploded view of a cell module according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a cell base according to an embodiment of the present invention.

Fig. 5 is a top view of a cell base according to an embodiment of the present invention.

Fig. 6 is a side view of a cell base according to an embodiment of the present invention.

Fig. 7 is a front view of a cell base according to an embodiment of the present invention.

Reference numerals:

the battery pack 100, the upper casing 2, the lower casing 3, the battery cell module 1, the battery cell base 11, the first cell group 12, the second cell group 13, the mounting groove 101, the busbar 14, the battery cell 15, the cross beam 16, the longitudinal beam 17, the sampling piece 18 and the through hole 102.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

With reference to fig. 1 to 7, a battery cell module 1 of a battery pack according to an embodiment of the present invention includes: the battery cell comprises a battery cell base 11 and a bus bar 14, wherein the battery cell base 11 is provided with a containing space therein so as to be suitable for containing the bus bar 14 and/or the battery cell 15, and a plurality of installing grooves 101 are constructed on the inner bottom surface of the battery cell base 11. Further, the bus bar 14 is disposed on the inner bottom surface of the cell base 11, that is, the bus bar 14 is disposed at the bottom of the cell base 11 and is accommodated in the mounting groove 101, so as to stably mount the bus bar 14 on the cell base 11. A part of the bus bar 14 protrudes upwards to the mounting groove 101, which can facilitate the mounting and dismounting of the bus bar 14 on the one hand, and can facilitate the connection between the battery cell 15 and the bus bar 14 on the other hand, avoiding the interference of the battery cell base 11. The mounting groove 101 is configured to be adapted to restrict the bus bar 14 from moving horizontally, that is, the bus bar 14 will not move in the lateral direction a and the longitudinal direction B after being mounted in the mounting groove 101, or the movement in the lateral direction a and the longitudinal direction B is restricted within a predetermined range. For example, the size of the mounting groove 101 is suitable for matching with the size of the bus bar 14, so that the mounting groove 101 can be fixedly connected with the bus bar 14, or the mounting groove 101 and the bus bar 14 are in an interference fit, an over-fit or a clearance fit, so as to improve the stability of the assembly of the bus bar 14, avoid the phenomenon that the bus bar 14 moves in the horizontal direction due to the impact action, cause dislocation or damage and the like, and improve the safety and stability of the module.

According to the battery cell module 1 of the battery pack, the bus bar 14 is installed in the installation groove 101 on the inner bottom surface of the battery cell base 11, so that the bus bar 14 can be fixedly connected in the horizontal direction, the bus bar 14 is favorably arranged, the structure is simple, the structure is easy to construct, and the manufacturing and assembling cost is favorably reduced.

In practical application, the bus bar 14 is directly arranged in the mounting groove 101, so that the assembly requirement and difficulty are reduced, and the improvement of the working efficiency is facilitated. The mounting groove 101 can effectively limit the horizontal movement of the bus bar 14, improving the stability of the mounting of the bus bar 14. In addition, locate busbar 14 in the interior bottom surface of electric core base 11, and place in mounting groove 101 for a part of busbar 14 can hold in electric core base 11, does benefit to the space saving, thereby does benefit to the volume that reduces electric core module 1.

Optionally, the ratio of the degree of depth of mounting groove 101 and the thickness of busbar 14 is 1/2 ~ 1/3 to it is spacing to do benefit to for busbar 14 provides the level, improves the installation stability, and can avoid electric core 15 utmost point post to receive electric core base 11's interference when being connected with busbar 14, improves and arranges the rationality, does benefit to and simplifies the battery module structure. In other words, the depth of the mounting groove 101 affects the limiting effect of the busbar 14, so that the depth of the mounting groove 101 is set within a proper range, that is, a good limiting effect can be achieved, the structure of the cell base 11 can be simplified, and the manufacturing difficulty and cost of the cell base 11 can be reduced. For example, if the thickness of the bus bar 14 is X, the depth of the slot is required to be X/2 to 2X/3.

Alternatively, the ratio of the depth of the mounting groove 101 to the thickness of the bus bar 14 may also be 1/1.5, 1/4, etc., depending on the actual situation or the actual size of the battery pack 100.

With reference to fig. 4 and 5, optionally, the plurality of mounting grooves 101 are arranged in a plurality of mounting groove 101 groups at the cell base 11, the plurality of mounting grooves 101 are arranged at intervals along the transverse direction a, each mounting groove 101 group includes a plurality of mounting grooves 101, and the plurality of mounting grooves 101 in each mounting groove 101 are arranged along the longitudinal direction B on the inner bottom surface of the cell base 11. That is, the plurality of mounting grooves 101 form a plurality of mounting groove 101 sets, which is beneficial for forming the straight bus bars 14 after the plurality of bus bars 14 are respectively mounted in the mounting grooves 101. Specifically, a plurality of mounting grooves 101 are arranged in proper order in the vertical B direction of electric core base 11 and are formed mounting groove 101 group, and mounting groove 101 group is provided with a plurality ofly along electric core base 11's horizontal A interval on electric core base 11, improves arranging rationality and space utilization of electric core module 1, can install multiunit busbar 14 on electric core base 11 from this, and multiunit busbar 14 separates each other, mutual interference does benefit to the performance that improves battery package 100. In addition, a plurality of mounting grooves 101 are arranged along longitudinal direction B in sequence, and a plurality of busbars 14 are mounted in the plurality of mounting grooves 101 to form busbars without bending, so that the arrangement space can be saved, the processing cost can be reduced, and the materials can be saved.

Further, a plurality of mounting grooves 101 group includes first bank 12 and second bank 13 to do benefit to and connect electric core 15, be convenient for cooperate with the utmost point post of electric core 15, do benefit to spatial arrangement. The first slot group 12 includes two mounting slot 101 rows adjacently arranged along the transverse direction a, the second slot group 13 includes one mounting slot 101 row, and each mounting slot 101 row includes a plurality of mounting slots 101 arranged at intervals along the longitudinal direction B. The positions and the arrangement number of the first slot group and the second slot group can be set on the battery cell base 11 according to actual conditions, so that space arrangement is facilitated, and a plurality of installed bus bars 14 are connected with the battery cells 15 conveniently.

Optionally, the first slot group 12 further includes two mounting slots 101 longitudinally opposite to the two rows of mounting slots 101 and extending along the transverse direction a, and the mounting slots 101 in the rows of mounting slots 101 each extend along the longitudinal direction B to facilitate spatial arrangement. With reference to fig. 5, the mounting groove 101 extending in the transverse direction a may be disposed at one end of the first groove group 12, and thus, the mounting groove 101 extending in the transverse direction a may also be used to connect the electric core 15 pole, so as to improve the space utilization and the arrangement rationality.

With reference to fig. 3 and 5, further, the first slot group 12 is configured in a "U" shape, or a plurality of mounting slots 101 in the first slot group 12 are arranged in a U shape. The first slot group 12 may include a plurality of slots, and the openings of two adjacent slot groups 12 face opposite directions to facilitate the spatial arrangement and the connection of the bus bar 14 with the battery cells 15. Therefore, the space utilization rate of the first slot groups 12 with opposite openings on the cell base 11 can be improved.

Optionally, a plurality of first slot sets 12 and a plurality of second slot sets 13 are arranged on the cell base 11, and at least one first slot set is arranged between two second slot sets to facilitate spatial arrangement.

Optionally, the second slot group 13 is disposed on two lateral sides of the battery cell base 11 along the transverse direction a, so as to facilitate spatial arrangement, and facilitate the cooperation of the bus bar 14 and the battery cell 15, so that one mounting groove 101 row of the first type operation near two lateral sides of the battery cell base 11 may be matched with the first slot group, so as to facilitate the bus bar 14 to connect the battery cell 15, for example, the positive electrode of the battery cell 15 is connected with the bus bar 14 row of one mounting groove 101 row of the first slot group 12, and the negative electrode of the battery cell 15 is connected with the bus bar 14 of the second slot group 13, so as to improve space utilization.

Optionally, at least one second cell group 13 is disposed between the two first cell groups 12, and according to the foregoing, the bus bars 14 installed in the first cell groups 12 and the second cell groups 13 may be matched with the positive pole posts and the negative pole posts of the battery cells 15, so as to improve the connection effect and the space utilization rate.

With reference to fig. 4 and 5, optionally, a cross beam 16 and a longitudinal beam 17 are provided in the cell base 11, the cross beam 16 extends along the transverse direction a and the longitudinal beam 17 extends along the longitudinal direction B, the cross beam 16 and the longitudinal beam 17 are crosswise provided in the mounting seat to achieve a supporting effect in the transverse direction a and the longitudinal direction B of the cell base 11, and a gap is provided between the cross beam 16 and the longitudinal beam 17 and the inner bottom surface of the cell base 11, so that the bus bar 14 or other components mounted on the inner bottom surface of the cell base 11 can pass through the gap to facilitate assembly.

Optionally, the cross beam 16 and the longitudinal beam 17 are fixedly connected or detachably connected to the cell base 11. For example, the cross beam 16 and the longitudinal beam 17 are fixedly connected with the cell base 11, so that the structural strength of the cell base 11 of the cell 15 can be improved, and gaps are formed between the cross beam 16 and the longitudinal beam 17 and the cell base 11, so that the base can be provided with parts such as the bus bar 14; the cross beam 16 and the longitudinal beam 17 can also be detachably arranged, so that the flexibility of assembling the cell base 11 is improved, for example, when the bus bar 14 is installed, the bus bar 14 can be directly arranged in the plurality of installation grooves 101, and then the cross beam 16 and the longitudinal beam 17 are installed, so that the structural strength is improved, and a certain supporting effect is achieved.

Optionally, the cell base 11, the cross beam 16 and the longitudinal beam 17 may be made of a plastic material, so as to reduce the weight of the module and facilitate reducing the cost; in order to improve the structural strength, reinforcing ribs may be appropriately provided on the cell base 11, the cross beam 16, and the longitudinal beam 17 to improve the structural strength.

The battery pack 100 according to an embodiment of the present invention includes: the battery comprises a lower shell 3, a battery cell module 1 and an upper shell 2, wherein a module space is arranged on the lower shell 3; the battery cell module 1 is arranged in the module space, so that the lower shell 3 can effectively protect the battery cell module 1, and the battery cell module 1 is the battery cell module 1 of the battery pack; go up casing 2 and establish on casing 3 down to seal the module in the module space, with the stability of improving electric core module 1 in the casing, and directly set up electric core module 1 in last casing 2 and casing 3 down, need not welding operation, do benefit to the assembly, practice thrift the processing cost. Through using aforementioned electric core module 1 in battery package 100, can facilitate for the assembly, do benefit to and improve spatial arrangement to do benefit to the volume that reduces battery package 100, and simple structure easily constructs, do benefit to and reduce manufacturing and assembly cost, realize the lightweight of battery package 100.

The transverse direction a of the present invention may refer to a left-right direction in the drawings, and the longitudinal direction B may refer to a front-back direction in the drawings, which are made only according to the drawings, and are intended to clearly illustrate the technical solution of the present application, and not to limit the scope of the present invention.

Optionally, in a specific example of the present invention, multiple rows of mounting grooves 101 are spaced apart from each other in the left-right direction on the inner bottom surface of the cell base 11, and each row includes multiple mounting grooves 101 spaced apart from each other in the front-back direction and extending in the front-back direction, where a row of mounting grooves 101 is disposed at a position close to the left and right edges of the inner bottom surface of the cell base 11, and between the two rows of mounting grooves 101, each two rows of mounting grooves 101 form a group, and a mounting groove 101 extending in the left-right direction and opposing to the front and back of the two rows of mounting grooves is disposed at the front end or the rear end of the two rows of mounting grooves in each group.

The following describes a battery cell module 1 and a battery pack 100 of a battery pack according to an embodiment of the present invention with reference to the drawings.

Referring to fig. 1 to 7, a battery pack 100 of the battery pack 100 according to an embodiment of the present invention includes: lower casing 3, electric core module 1 and last casing 2, wherein, lower casing 3 has the module space, and in electric core module 1 located the module space, casing 3 under the upper cover of last casing 2 to form inside stable battery package 100 of connecting.

With reference to fig. 2 to 5, specifically, the battery cell module 1 includes: the battery cell comprises a cell base 11, a bus bar 14 and a sampling and battery cell 15, more specifically, a plurality of mounting grooves 101 are formed on the inner surface of the cell base 11, the plurality of bus bars 14 are mounted in the plurality of mounting grooves 101, and the mounting grooves 101 have a predetermined depth, so as to improve the mounting stability of the bus bars 14; a first groove group 12 and a second groove group 13 are respectively constructed by a plurality of mounting grooves 101; the cell base 11 is internally provided with a transverse beam 16 extending along the transverse direction A and a longitudinal beam 17 extending along the longitudinal direction B, wherein the transverse beam 16 and the longitudinal beam 17 are fixedly connected with the cell base 11, and the transverse beam 16 and the longitudinal beam 17 are respectively positioned on the central lines of the transverse direction A and the longitudinal direction B of the cell base 11 so as to improve the structural stability and the balance of the cell base 11. Electric core 15 has anodal utmost point post and negative pole post, and anodal utmost point post and negative pole post link to each other with busbar 14 respectively, and sampling piece 18 is provided with a plurality ofly at electric core base 11 inner bottom surface interval, and sampling piece 18 links to each other with busbar 14 to information collection, sampling piece 18 is located between two adjacent electric core 15's utmost point posts, in order to practice thrift the space.

The battery cell module disclosed by the embodiment of the utility model uses the battery cell with zero expansion during charging and discharging, the influence of the expansion of the battery cell on other parts is not required to be solved, and the straight bus bar is adopted, so that the bending is not required, the processing cost is low, and the material is saved. Therefore, the battery cell module provided by the embodiment of the utility model does not need to be provided with the end side plates of the battery cell module in the related technology, so that the welding procedure of the end side plates is omitted, a large amount of space occupied by the end side plates is omitted, the whole package weight brought by the end side plates is reduced, and the lightweight module is favorably realized. With reference to fig. 2 to 5, in practical applications, a groove is formed in the lower bottom surface of the cell base 11 for installing the bus bar 14 according to the serial-parallel connection form of the cell 15, and the installation groove 101 of the bus bar 14 is designed to accommodate the bus bar 14, if the thickness of the bus bar 14 is X, the depth of the groove is required to be between X/2 and 2X/3, so as to provide a good limit for installing the bus bar 14 and require that the upper surface of the bus bar 14 is higher than the surface of the base, thereby avoiding interference between the cell post and the upper surface of the base when the cell post and the bus bar 14 are attached.

Specifically, the plurality of bus bars 14 are correspondingly mounted in a plurality of mounting grooves 101 having a predetermined depth. The sampling components 18 penetrate through the gaps between the cell base 11 and the brackets of the transverse beams and the longitudinal beams 17 and are arranged between the two first slot groups 12 and between the first slot groups 12 and the second slot groups 13. The positive pole column and the negative pole column of the battery cell 15 are respectively connected with the busbar 14 from top to bottom, the battery cell module 1 can be installed in the lower shell 3, and the upper shell 2 can cover the lower shell 3. Particularly, all set up a plurality of perforating holes 102 at the interval on crossbeam 16 and the longeron 17 of last casing 2, lower casing 3 and electric core module 1, perforating hole 102 corresponds the setting in the upper and lower direction, during the assembly, can correspond fixed connection with last casing 2, electric core module 1 and lower casing 3 through perforating hole 102 to improve structural stability, and do benefit to and simplify the structure.

With reference to fig. 2 to 7, in the battery cell module 1 of the battery pack according to the embodiment of the present invention, the battery cell base 11 is a rectangular parallelepiped with an open upper end, and the mounting groove 101 is rectangular. The first groove group 12 is arranged in a U shape with an opening along the longitudinal direction B, the first groove group 12 comprises two mounting groove lines 101 and a mounting groove 101 extending in the transverse direction A, wherein the left end and the right end of the mounting groove line 101 in the transverse direction A are flush with the left end and the right end of the two mounting groove lines 101; the second slot group 13 comprises a row of mounting slots 101. In the middle area of the inner bottom surface of the cell base 11, a plurality of second slot groups 13 are arranged at intervals, the openings of two adjacent second slot groups 13 are opposite, a sampling piece 18 is arranged at the interval between two adjacent second slot groups 13, and the left side and the right side of the sampling piece 18 are respectively connected with the busbars 14 in the two adjacent first slot groups 12. A second slot group 13 is respectively arranged at the left end and the right end of the inner bottom surface of the battery cell base 11, an interval is arranged between the second slot group 13 and the first slot group 12, the sampling piece 18 is arranged at the interval, and the left side and the right side of the sampling piece 18 are respectively connected with the bus bar 14 in the first slot group 12 and the bus bar 14 in the second slot group 13. The battery cells 15 are arranged in an array and installed in the battery cell base 11, and the positive pole columns and the negative pole columns of the battery cells 15 are connected with the busbar 14. From this, through using foretell electric core module 1, can simplify the assembly work of battery package 100, do benefit to and improve spatial arrangement to reduce the volume of battery package 100, and simple structure easily constructs, do benefit to and reduce manufacturing and assembly cost, realize the lightweight of battery package 100.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "thickness", "upper", "lower", "front", "rear", "left", "right", "horizontal", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. The utility model provides an electricity core module of battery package which characterized in that includes:

the battery cell comprises a battery cell base, a battery cell base and a battery cell, wherein the battery cell base is internally provided with a containing space, and a plurality of mounting grooves are formed in the inner bottom surface of the battery cell base;

the bus bar is arranged on the inner bottom surface of the battery cell base and is accommodated in the installation groove, a part of the bus bar protrudes upwards out of the installation groove, and the installation groove is configured to limit the horizontal movement of the bus bar.

2. The battery pack battery cell module of claim 1, wherein the ratio of the depth of the mounting groove to the thickness of the busbar is 1/2-1/3.

3. The battery cell module of claim 1, wherein the plurality of mounting slots are arranged in a plurality of mounting slot groups at the battery cell base, and the plurality of mounting slot groups are arranged at intervals in a transverse direction, and each mounting slot group comprises a plurality of mounting slots arranged in a longitudinal direction on an inner bottom surface of the battery cell base.

4. The battery pack cell module of claim 3, wherein the plurality of mounting groove sets comprises a first groove set and a second groove set, the first groove set comprises two adjacent mounting groove columns in the transverse direction, the second groove set comprises one mounting groove column, and each mounting groove column comprises a plurality of mounting grooves arranged at intervals in the longitudinal direction.

5. The battery pack cell module of claim 4, wherein the first slot group further comprises mounting slots longitudinally opposite to the two mounting slot rows and extending in the transverse direction, and the mounting slots in the mounting slot rows each extend in the longitudinal direction.

6. The battery pack cell module of claim 5, wherein the first slot set is configured in a "U" shape, the first slot set comprises a plurality of slot sets, and the openings of two adjacent slot sets face in opposite directions.

7. The battery pack cell module of claim 5,

a plurality of first slot sets and a plurality of second slot sets are arranged on the battery cell base; and/or

The cell base is provided with the second cell groups along two transverse side edges, and at least one first cell group is arranged between the two second cell groups.

8. The battery cell module of the battery pack of any of claims 1-7, wherein a cross member and a longitudinal member are disposed in the cell base, the cross member extends in a transverse direction and the longitudinal member extends in a longitudinal direction, the cross member and the longitudinal member are disposed in the mounting seat in a crossing manner, and a gap is formed between the cross member and the longitudinal member and an inner bottom surface of the cell base.

9. The battery pack cell module of claim 8, wherein the cross member and the longitudinal member are fixedly or detachably connected to the cell base.

10. A battery pack, comprising:

the lower shell is provided with a module space;

a cell module disposed within the module space, the cell module being a cell module of the battery pack of any of claims 1-9;

and the upper shell is arranged on the lower shell so as to seal the module in the module space.

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