CN211980703U

CN211980703U - Battery module

Info

Publication number: CN211980703U
Application number: CN202020781552.1U
Authority: CN
Inventors: 刘俊鹏; 江吉兵; 徐博豪
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2020-11-20
Anticipated expiration: 2030-05-12

Abstract

The utility model discloses a battery module, including electric core group, electric core group includes a plurality of electric core modules, and electric core module includes support and electric core, and the support has the first side and the second side that set up mutually, and first side and second side all are used for installing electric core, and first side is provided with a plurality of reference columns, and the second side is provided with a plurality of locating holes, and the reference column can be inserted in the locating hole in order to connect two adjacent supports. The utility model discloses the battery module has modular design's electric core group, and the structure of the reference column of design and locating hole makes each electric core module can obtain the electric core group of different capacities through simple piling up on the support, and the assembly process is simple, and is efficient in groups, and the support still acts as the structure except providing the mounted position for electric core, plays the effect that improves battery module structural strength.

Description

Battery module

Technical Field

The utility model relates to a battery technology field especially relates to a battery module with modularization electric core group.

Background

The existing battery modules mainly comprise two types, namely a small-sized standardized module and a large-sized module, wherein the small-sized standardized module has obvious characteristics, the length, the height, the width and the like of the small-sized standardized module are basically the same, and most parts can be used universally and commonly. However, with the continuous pursuit of kilometers by the whole car factory and the continuous attention of users to energy density at the present stage, the battery factory presents greater challenges to the energy density and weight of the single battery cells and the grouping efficiency of the modules. The design of large modules has been followed, and the first large module was first introduced by Tesla of the famous motor company abroad. The module has the characteristics of being very outstanding, the width and the height of the module tend to be consistent, the longer the module is made in the length, the more the grouping efficiency of the module is obviously improved, and the cost of the module is gradually reduced. Present big module structure electric core can divide into directly to pile up and the frame piles up the condition, directly piles up electric core module and pile up the stage unusual complicacy at the electric core in the assembling process, so abandoned by present mainstream battery factory, the frame piles up the scheme then can have certain promotion also simple a lot in the assembling process at electric core length direction's intensity. How to upgrade the structure of a large module with complicated materials and complex structure into a large module with simple and firm structure and high material generalization degree becomes a problem which needs to be solved urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery module, its electric core group that has the modularized design, convenient, simple structure just stabilizes in groups.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a battery module, includes electric core group, electric core group includes a plurality of electric core modules, electric core module includes support and electric core, the support has first side and the second side of carrying on the back the body and setting up mutually, first side with the second side all is used for the installation electric core, first side is provided with a plurality of reference columns, the second side is provided with a plurality of locating holes, the reference column can insert in the locating hole with connect adjacent two the support.

As a preferred scheme of the utility model, first side with all be provided with one on the second side electricity core.

As an optimized scheme of the utility model, be provided with the reinforcing plate on the support, a side of electricity core with the reinforcing plate is connected.

As a preferred scheme of the utility model, be provided with first bolster or heat insulating part between two adjacent electric core modules.

As an optimized scheme of the utility model, the battery module still includes external frame, the inside chamber that holds of injecing of external frame, it is used for holding to hold the chamber the electric core group, external frame is the cuboid form, including bottom plate, apron, first curb plate, second curb plate and two end plates, the bottom plate with the equal level of apron sets up, first curb plate with the second curb plate sets up relatively, two the end plate sets up relatively, the up end of end plate with cover connection, the lower terminal surface of end plate with the bottom plate is connected, first curb plate reaches the second curb plate all with one side joint of electric core group, first curb plate reaches the ascending both ends of second curb plate length direction with the end plate counterbalance is held.

As an optimized scheme of the utility model, the apron and/or the bottom plate with be provided with the second bolster between the electric core group.

As an optimized scheme of the utility model, be provided with a plurality of pothooks on the support, first curb plate reaches a plurality of card holes have all been seted up on the second curb plate, the pothook can be gone into block the hole so that first curb plate reaches the second curb plate is fixed on the cell group.

As a preferred scheme of the utility model, electric core includes first utmost point ear, second utmost point ear and electric core body, first utmost point ear sets up the one end of electric core body, the second utmost point ear sets up the other end of electric core body.

As an optimized scheme of the utility model, two all be provided with electrically conductive piece on the end plate, electrically conductive piece with the electric core group electricity is connected.

As a preferred scheme of the utility model, first curb plate and/or be provided with on the second curb plate and supply low pressure pencil connector male grafting portion.

The utility model has the advantages that:

the utility model discloses the battery module has modular design's electric core group, and electric core group includes a plurality of electric core modules, and electric core module includes the support and sets up the electric core on the support, and the structure of the reference column of design and locating hole on the support makes each electric core module can obtain the electric core group of different capacities through simple piling up, and assembly process is simple, and is efficient in groups, and the support still acts as the structure except that providing the mounted position for electric core, plays the effect that improves battery module structural strength.

Drawings

Fig. 1 is a perspective view of a battery module according to an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

fig. 3 is a perspective view of a bracket according to an embodiment of the present invention;

fig. 4 is a perspective view of a cell module according to an embodiment of the present invention;

FIG. 5 is a front view of FIG. 4;

FIG. 6 is a side view of FIG. 4;

fig. 7 is a side view of fig. 1.

In the figure:

1. a cell module; 11. a support; 111. a positioning column; 112. positioning holes; 113. a reinforcing plate; 114. a hook; 12. an electric core; 121. a first tab; 122. a second tab; 2. a base plate; 3. a cover plate; 4. an end plate; 41. a conductive member; 411. connecting sheets; 412. a conductive block; 5. a first side plate; 51. a first card hole; 52. a plug-in part; 6. a second side plate; 61. a second card hole; 7. a first buffer member; 8. a second buffer member; 9. an insulating member.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the word "over" a first feature or feature in a second feature may include the word "over" or "over" the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under" a second feature may include a first feature that is directly under and obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Furthermore, in the description of the present invention, unless explicitly stated or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

As shown in fig. 2 to 5, the battery module of this embodiment includes a cell group, the cell group includes a plurality of cell modules 1, each cell module 1 includes a support 11 and two cells 12, each support 11 has a first side and a second side that are opposite to each other, the two cells 12 are respectively disposed on the first side and the second side, a positioning column 111 is disposed on the first side of each support 11, a positioning hole 112 is disposed on the second side of each support 11, and the positioning column 111 can be inserted into the positioning hole 112 to connect the two adjacent supports 11.

The battery module of this embodiment has modular design's electric core group, electric core group includes a plurality of electric core module 1, electric core module 1 includes support 11 and sets up electric core 12 on support 11, the structure of reference column 111 and locating hole 112 that designs on support 11 makes each electric core module 1 can obtain the electric core group of different capacity through simple piling up, assembly process is simple, it is efficient in groups, support 11 still acts as the structure except providing the mounted position for electric core 12, play the effect that improves battery module structural strength.

The number of the battery cells 12 arranged on each support 11 does not necessarily need to be two, only one, three, or more than three battery cells 12 may be arranged on one support 11, and the number of the battery cells 12 arranged on the first side surface and the second side surface of a single support 11 may be changed by adjusting the sizes of the support 11 and the battery cells 12.

Further, the first side surface and the second side surface of the bracket 11 are further provided with a reinforcing plate 113, and one side of the battery cell 12 is attached to the reinforcing plate 113. In order to facilitate manufacturing, reduce the weight of the battery module and save the manufacturing cost, the main body of the bracket 11 is made of plastic, the main body of the bracket 11 can be manufactured by an injection molding method, and the reinforcing plate 113 can be made of metal material, such as aluminum alloy, so that the structural strength of the bracket 11 can be improved, and the structure of the battery module is more stable. The battery cell 12 may be connected to the reinforcing plate 113 by bonding.

As shown in fig. 1 and fig. 2, preferably, the battery module further includes an external frame, the internal portion of the external frame is limited to hold the cavity, the cavity is used for holding the electric core group, the external frame is in a cuboid shape, the external frame includes a bottom plate 2, an apron 3, two end plates 4, a first side plate 5 and a second side plate 6, the bottom plate 2 and the apron 3 are arranged horizontally, the first side plate 5 and the second side plate 6 are arranged relatively, the two end plates 4 are arranged relatively, the upper end surface of the end plate 4 is connected with the apron 3, the lower end surface of the end plate 4 is connected with the bottom plate 2, the first side plate 5 and the second side plate 6 are clamped on one side of the electric core group, and the two ends of the first side plate 5 and the second side plate 6 in. In this embodiment, the positions to be welded are only the connection between the end plate 4 and the bottom plate 2 and the connection between the end plate 4 and the cover plate 3, which greatly reduces the welding positions and improves the assembly efficiency of the battery module compared with the connection method of the existing battery outer frame.

In some embodiments, a first buffer 7 is disposed between two adjacent cell modules 1, and the first buffer 7 may be compressed, so as to absorb expansion of the cells 12 during a cycle, and maintain the structural and morphological stability of the battery module.

Further, be provided with second bolster 8 between apron 3 and the electric core group, second bolster 8 can improve the shock resistance of battery module on the vertical direction. The second buffer member 8 can also be disposed between the bottom plate 2 and the electric core assembly, or the second buffer member 8 is disposed between the bottom plate 2 and the electric core assembly, or disposed between the cover plate 3 and the electric core assembly. The first buffer member 7 and the second buffer member 8 can be made of foam.

Optionally, a heat insulation member is further disposed between two adjacent battery cell modules 1, or the first buffer member 7 further has a heat insulation function. When a single battery cell 12 is out of control thermally, the heat generation amount thereof increases suddenly, and if the heat is transferred to the surrounding battery cells 12 without being blocked, large-scale thermal out of control of the surrounding battery cells 12 can be rapidly caused, thereby forming a potential safety hazard. Through the arrangement of the heat insulation piece, the heat resistance of the thermal runaway electric core 12 for transferring heat to the periphery can be improved, so that the aim of preventing the thermal runaway from rapidly spreading is fulfilled.

Preferably, an insulating member 9 is further disposed between the end plate 4 and the cell module 1, for insulating the cell 12 from the end plate 4.

Specifically, the bracket 11 is provided with a plurality of hooks 114, the first side plate 5 is provided with a plurality of first locking holes 51, the second side plate 6 is provided with a plurality of second locking holes 61, and the hooks 114 can be locked into the first locking holes 51 or the second locking holes 61, so that the first side plate 5 and the second side plate 6 are fixed on the cell pack.

Further, the battery cell 12 includes a battery cell body, a first tab 121 and a second tab 122, the first tab 121 is disposed at one end of the battery cell body, the second tab 122 is disposed at the other end of the battery cell body, and a plurality of battery cells 12 are connected in series or in parallel. One of the first tab 121 and the second tab 122 is a positive tab, and in the illustrated embodiment, the plurality of battery cells 12 are connected in series, that is, the first tab 121 of one battery cell 12 is connected to the second tab 122 of an adjacent battery cell 12. If the first tab 121 of one cell 12 is connected to the first tab 121 of an adjacent cell 12, and the second tab 122 is connected to the second tab 122 of an adjacent cell 12, parallel connection is formed between the cells 12.

Preferably, a conductive member 41 is disposed on each of the two end plates 4, and the conductive member 41 is electrically connected to the electric core assembly. The conductive element 41 is connected to the first tab 121 or the second tab 122 of the battery cell 12 located outside the battery cell group, and serves as a positive electrode or a negative electrode of the battery module.

Specifically, the conductive member 41 includes a connecting piece 411 and a conductive block 412, and the connecting piece 411 has a large connecting area with the first tab 121 or the second tab 122, so as to improve the stability and overcurrent capacity of the connection.

In some embodiments, the first side plate 5 is provided with a mating portion 52 into which a low voltage harness connector is inserted. The low-voltage wire harness collects information such as voltage and temperature of the battery module through the connector, and whether the battery module is in a normal working state or not can be reflected. The embodiment of the present invention has the insertion portion 52 on the first side plate 5, and does not have such a structure on the end plate 4, which can prevent the structure from affecting the welding between the end plate 4 and the bottom plate 2 or the cover plate 3, and is beneficial to improving the structural strength of the external frame.

A structure for inserting the low-voltage harness connector may be provided on the second side plate 6, or a structure for inserting the low-voltage harness connector may be provided on both the first side plate 5 and the second side plate 6.

As a preferred embodiment of the present invention, in the description of the present specification, reference to the description of the terms "preferred", "further" or the like means that a particular feature, structure, material, or characteristic described in connection with the example or illustration is included in at least one example or illustration of the present invention. In this specification, the schematic representations of the terms used above do not necessarily 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.

The above embodiments are only used to illustrate the detailed embodiments of the present invention, and the present invention is not limited to the above detailed embodiments, i.e. the present invention must not be implemented depending on the detailed embodiments. It should be clear to those skilled in the art that any improvement of the present invention, to the equivalent replacement of each raw material of the present invention, the addition of auxiliary components, the selection of specific modes, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. The utility model provides a battery module, its characterized in that, includes electric core group, electric core group includes a plurality of electric core modules, electric core module includes support and electric core, the support has first side and the second side that sets up mutually, first side with the second side all is used for the installation electric core, first side is provided with a plurality of reference columns, the second side is provided with a plurality of locating holes, the reference column can insert in the locating hole with connect adjacent two the support.

2. The battery module according to claim 1, wherein the first side and the second side are each provided with one of the battery cells.

3. The battery module according to claim 2, wherein a reinforcing plate is disposed on the support, and a side surface of the battery core is connected to the reinforcing plate.

4. The battery module of claim 1, wherein a first buffer or thermal insulator is disposed between two adjacent cell modules.

5. The battery module according to claim 1, further comprising an outer frame, wherein a containing cavity is defined inside the outer frame, the containing cavity is used for containing the electric core group, the outer frame is in a cuboid shape and comprises a bottom plate, a cover plate, a first side plate, a second side plate and two end plates, the bottom plate and the cover plate are horizontally arranged, the first side plate and the second side plate are arranged oppositely, the two end plates are arranged oppositely, the upper end surface of each end plate is connected with the cover plate, the lower end surface of each end plate is connected with the bottom plate, the first side plate and the second side plate are connected with one side of the electric core group in a clamped mode, and the two ends of the first side plate and the second side plate in the length direction are abutted to the end plates.

6. The battery module according to claim 5, wherein a second buffer member is disposed between the cap plate and/or the base plate and the electric core pack.

7. The battery module according to claim 5, wherein the bracket has hooks, the first side plate and the second side plate have holes, and the hooks can be engaged with the holes to fix the first side plate and the second side plate to the battery pack.

8. The battery module of claim 7, wherein the cell comprises a first tab, a second tab, and a cell body, the first tab is disposed at one end of the cell body, and the second tab is disposed at the other end of the cell body.

9. The battery module as set forth in claim 8, wherein a conductive member is provided on both of the end plates, the conductive member being electrically connected to the cell group.

10. The battery module according to claim 5, wherein the first side plate and/or the second side plate is provided with an insertion part into which a low-voltage harness connector is inserted.