CN218300011U

CN218300011U - Battery module and new energy automobile

Info

Publication number: CN218300011U
Application number: CN202222154336.6U
Authority: CN
Inventors: 牛加新; 陈智伟; 陈朝海
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2023-01-13
Anticipated expiration: 2032-08-16

Abstract

The utility model relates to a battery technology field discloses a battery module and new energy automobile. The battery module comprises a battery cell module and two end plates, wherein the battery cell module comprises a plurality of battery cells which are stacked and conducted with each other, and also comprises winding pieces which are wound on the outer sides of the plurality of battery cells, and the winding pieces are configured to provide preset pretightening force for the plurality of battery cells; the two end plates are respectively arranged on two sides of the battery cell module. The utility model is provided with a plurality of electric cores which are mutually stacked and conducted, and is used for ensuring the power supply quantity of the battery module; the winding pieces wound on the outer sides of the plurality of battery cores are used for providing preset pretightening force for the plurality of battery cores, so that the cycle life of the battery module is effectively prolonged, the size of the battery module can be reduced, and the space utilization rate is improved; set up the end plate through the both ends at electric core module, play certain guard action to electric core module effectively, can also increase the efficiency in groups of battery module simultaneously, the installation of the battery module of being convenient for.

Description

Battery module and new energy automobile

Technical Field

The utility model relates to a battery technology field especially relates to a battery module and new energy automobile.

Background

In the prior art, in consideration of the fact that space is limited and the use condition of a 12V lithium battery applied to a new energy automobile is not as severe as that of a power battery, low-voltage battery modules of most manufacturers are usually directly assembled in a PACK box, so that the performance of the lithium battery is greatly reduced, and the problem which needs to be overcome for medium-high-end pure electric vehicles is solved.

Therefore, a battery module and a new energy vehicle are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Based on above, an object of the utility model is to provide a battery module and new energy automobile, the performance is better, and cycle life is longer.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a battery module, comprising:

the battery cell module comprises a plurality of battery cells which are stacked and conducted with each other, and further comprises winding pieces which are wound on the outer sides of the plurality of battery cells, wherein the winding pieces are configured to provide preset pretightening force for the plurality of battery cells;

and the two end plates are respectively arranged on two sides of the battery cell module.

As a preferred scheme of battery module, the lower extreme of end plate sets up the support end, hold in the palm the end can the bearing electricity core module.

As a preferred scheme of battery module, the end plate is kept away from the one end of electricity core module is provided with two at least mutual spaced installation muscle, the installation muscle can with the holding the inner wall butt of the PACK box of battery module.

As a preferable aspect of the battery module, the mounting ribs extend in a height direction of the end plates.

As a preferred scheme of the battery module, the mounting rib is arranged at the upper end of the end plate.

As an optimal scheme of a battery module, the installation muscle with the end plate is the contained angle setting, the top orientation of installation muscle is kept away from the lopsidedness of electricity core module.

As a preferred scheme of battery module, the both ends of end plate all are provided with the installation ear, the installation ear can with electric core module joint.

As a preferred scheme of the battery module, a shock absorption layer is arranged on one side of the end plate, which is close to the cell module.

As a preferred scheme of battery module, it is a plurality of be provided with the insulating piece between the electric core, it enables to predetermine pretension the insulating piece with the laminating of electric core.

The utility model provides a new energy automobile, includes the PACK box and set up in the PACK box as above arbitrary scheme battery module.

The utility model has the advantages that:

the utility model is provided with a plurality of electric cores which are mutually stacked and conducted, and is used for ensuring the power supply quantity of the battery module; the winding pieces wound on the outer sides of the plurality of battery cores are used for providing preset pretightening force for the plurality of battery cores, and the preset pretightening force is added among the plurality of battery cores, so that the cycle life of the battery module is effectively prolonged, the size of the battery module can be reduced, and the space utilization rate is improved; set up the end plate through the both ends at electric core module, play certain guard action to electric core module effectively, can also increase the efficiency in groups of battery module simultaneously, the installation of the battery module of being convenient for.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

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

fig. 2 is an exploded view of a battery module according to an embodiment of the present invention;

fig. 3 is an exploded view of a battery module according to an embodiment of the present invention;

fig. 4 is a first schematic view of an end plate of a battery module according to an embodiment of the present invention;

fig. 5 is a schematic diagram of an end plate of a battery module according to an embodiment of the present invention.

In the figure:

1. a cell module; 11. an electric core; 12. a winding member; 13. an insulating sheet;

2. an end plate; 21. supporting the bottom; 22. installing ribs; 23. mounting lugs;

3. and a shock absorption layer.

Detailed Description

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

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, 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. Wherein the terms "first position" and "second position" are two different positions.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

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

With the development of new energy automobiles, 12V lithium batteries also gradually enter the public vision. With the popularization of pure and new energy automobiles, the switching of a lead-acid storage battery into a lithium battery for a 12V low-voltage power supply in the future is an inevitable trend, and the pure and new energy automobiles need a high-performance low-voltage power supply to improve the quality of the whole automobiles. This embodiment still discloses a new energy automobile, includes the PACK box and sets up in the internal battery module of PACK box. The battery module has the advantages of higher performance and longer cycle life, so that the finished automobile quality of the new energy automobile comprising the battery module is better.

As shown in fig. 1 to fig. 5, the present embodiment provides a battery module that can be used in the new energy vehicle, where the battery module includes a battery cell module 1 and two end plates 2, the battery cell module 1 includes a plurality of battery cells 11 that are stacked and conducted with each other, and further includes a winding member 12 that is wound around the outside of the plurality of battery cells 11, and the winding member 12 is configured to provide a preset pretightening force for the plurality of battery cells 11; two end plates 2 are respectively arranged on two sides of the cell module 1.

The battery module is provided with a plurality of mutually stacked and conducted battery cores 11 for ensuring the power supply quantity of the battery module; the winding pieces 12 wound on the outer sides of the plurality of battery cells 11 are used for providing preset pretightening force for the plurality of battery cells 11, and the preset pretightening force is added among the plurality of battery cells 11, so that the cycle life of the battery module is effectively prolonged, the size of the battery module can be reduced, and the space utilization rate is improved; set up end plate 2 through the both ends at electric core module 1, play certain guard action to electric core module 1 effectively, can also increase the efficiency in groups of battery module simultaneously, the installation of the battery module of being convenient for.

As an alternative of a battery module, the lower end of the end plate 2 is provided with a support bottom 21, and the support bottom 21 can support the battery cell module 1. The bottom support 21 used for supporting the battery cell module 1 is arranged at the lower end of the end plate 2, so that the direct contact between the bottom of the battery cell module 1 and a PACK box body is avoided, and the safety of the bottom of the battery cell module 1 is effectively guaranteed.

Further, both ends of the end plate 2 are provided with mounting lugs 23, and the mounting lugs 23 can be clamped with the cell module 1. Through setting up the installation ear 23 with 1 width direction both ends joint of electric core module, avoided the direct and PACK box contact in 1 width direction both ends of electric core module, guaranteed the security at 1 width direction both ends of electric core module effectively.

As an alternative scheme of battery module, as shown in fig. 4 and 5, the end plate 2 is provided with two at least spaced installation ribs 22 at the end away from the electric core module 1, and the installation ribs 22 can abut against the inner wall of the PACK box for accommodating the battery module. Through the inner wall butt of installation muscle 22 and PACK box, realize the rigidity restraint of battery module and PACK box. Simultaneously, the setting of installation muscle 22 can reduce the butt area of the inner wall of battery module and PACK box effectively, the battery module of being convenient for in groups and installation.

Specifically, the mounting ribs 22 extend in the height direction of the end plate 2. Through setting up installation muscle 22 to extending for the direction of height along end plate 2 for when battery module installs in the PACK box, installation muscle 22 can play certain guide effect, makes battery module in groups more laborsaving with the installation.

Further, a mounting rib 22 is provided at the upper end of the end plate 2. Through setting up installation muscle 22 in the upper end of end plate 2, be convenient for when battery module in groups and the installation, end plate 2 does not be provided with the lower extreme of installation muscle 22 and at first gets into the PACK box, reduces battery module's the income case degree of difficulty.

Optionally, the installation rib 22 and the end plate 2 are arranged at an included angle, and the upper side of the installation rib 22 is inclined towards the side far away from the cell module 1. Through the plane top orientation that is close to the PACK box with installation muscle 22 keep away from electric core module 1's one side slope for the battery module is at the in-process of income case, and installation muscle 22 and the inner wall of PACK box butt gradually. Simultaneously, so set up more laborsaving when can also taking out battery module in the PACK box.

Preferably, the inner wall of PACK box has the same draft angle with installation muscle 22 for when the PACK box was arranged in to the battery module, installation muscle 22's atress was more even, and then made the battery module place in the PACK box increase stably, reliably.

In this embodiment, the end plate 2 is formed by injection molding, and has the advantages of low density and light weight. The end plate 2 formed by injection molding has higher structural strength, so that the connection of the bottom support 21, the mounting lug 23 and the mounting rib 22 is more reliable.

As an alternative to the battery module, as shown in fig. 1 to 3, a shock absorbing layer 3 is provided on one side of the end plate 2 close to the cell module 1. Through setting up buffer layer 3, can absorb 11 charge-discharge in-process electricity core module 1's of electric core deformation to transmit for end plate 2, produce the interact power between electricity core module 1 and end plate 2, make the holistic connection of battery module more reliable. In addition, the setting of buffer layer 3 is favorable to compressing when the battery module is gone into the case to absorb the dimensional deviation of PACK box or battery module itself, reduce the income case degree of difficulty.

The shock absorption layer 3 is made of foam, which has high resilience and can effectively absorb the expansion force caused by the deformation of the cell module 1 when the cell 11 is charged and discharged, and transmit the expansion force to the end plate 2.

Further, insulating sheets 13 are arranged between the plurality of battery cells 11, and are used for realizing insulation between two adjacent battery cells 11. It should be noted that no glue or gum is needed between the battery cell 11 and the insulating sheet 13, but the insulating sheet 13 is attached to the battery cell 11 by the preset pretightening force of the winding member 12, so as to fix the position of the insulating sheet 13 relative to the battery cell 11. So set up, not only simplified the step of uniting, still reduced the cost of battery module.

In this embodiment, the wrapping member 12 is a fiber tape. The installation process of the battery module is as follows: sequentially stacking the battery cell 11 and the insulating sheet 13, applying a preset pretightening force to the stacked battery cell 11 and the insulating sheet 13 through a tooling clamp, and winding a fiber adhesive tape to ensure that the preset pretightening force is the initial pretightening force of the battery module; then, the two end plates 2 are respectively clamped and connected with the battery cell module 1; and finally, arranging the battery module in the PACK box body.

The battery module is provided with the initial preset pretightening force, and has the advantages of high space utilization rate, simple assembly process and lower cost compared with the battery module in the prior art; in addition, the buffering is provided by the bubble cotton between electric core module 1 and end plate 2, can resist the bulging force that charge-discharge cycle produced when having shock-resistant vibration ability, has promoted battery module's life.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A battery module, comprising:

the battery cell module (1), wherein the battery cell module (1) comprises a plurality of battery cells (11) which are stacked and conducted with each other, the battery cell module (1) further comprises a winding piece (12) wound on the outer sides of the plurality of battery cells (11), and the winding piece (12) is configured to provide a preset pretightening force for the plurality of battery cells (11);

the two end plates (2) are respectively arranged on two sides of the battery cell module (1).

2. The battery module according to claim 1, characterized in that the lower end of the end plate (2) is provided with a support base (21), and the support base (21) can support the cell module (1).

3. The battery module according to claim 1, wherein one end of the end plate (2) away from the cell module (1) is provided with at least two spaced mounting ribs (22), and the mounting ribs (22) can abut against the inner wall of a PACK box containing the battery module.

4. A battery module according to claim 3, characterized in that the mounting ribs (22) extend in the height direction of the end plate (2).

5. The battery module according to claim 3, wherein the mounting beads (22) are provided at the upper end of the end plate (2).

6. The battery module according to claim 3, wherein the mounting rib (22) is arranged at an angle to the end plate (2), and the upper side of the mounting rib (22) is inclined towards the side away from the cell module (1).

7. The battery module according to claim 1, wherein mounting lugs (23) are arranged at both ends of the end plate (2), and the mounting lugs (23) can be clamped with the cell module (1).

8. The battery module according to claim 1, characterized in that the side of the end plate (2) close to the cell module (1) is provided with a shock absorbing layer (3).

9. The battery module according to claim 1, wherein an insulating sheet (13) is disposed between the plurality of battery cells (11), and the preset pretension force enables the insulating sheet (13) to be attached to the battery cells (11).

10. A new energy automobile, characterized by comprising a PACK box body and the battery module set in the PACK box body according to any one of claims 1-9.