CN213752894U

CN213752894U - Battery module and battery pack with same

Info

Publication number: CN213752894U
Application number: CN202023123985.7U
Authority: CN
Inventors: 李硕
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-07-20
Anticipated expiration: 2030-12-22

Abstract

The utility model provides a battery module and battery package that has it, the battery module includes: the battery cell comprises a plurality of battery cells, a plurality of battery cells and a plurality of battery cells, wherein the battery cells are sequentially arranged along the thickness direction; and the insulating elastic plate is suitable for being clamped between the two adjacent electric cores. The insulating elastic plate is matched with the battery cell in size and shape and is attached to the battery cell. The core can produce certain change at charge-discharge in-process volume, and the extrusion force between electric core and the electric core can be cushioned to the insulating elastic plate between the electric core, prevents to produce the rigidity extrusion force between the electric core, controls the dimensional change of battery module effectively, improves use reliability, the security of battery module.

Description

Battery module and battery pack with same

Technical Field

The utility model relates to a battery package technical field, in particular to battery module and battery package that has it.

Background

At present, the performance of the lithium ion battery is due to the lead-acid battery and the nickel-hydrogen battery, and meanwhile, the lithium ion battery has the potential of recycling.

In the related art, the volume of the battery cell changes during the charging and discharging processes, for example: and (4) expanding. When battery core emergence inflation, can produce the rigidity extrusion force between a plurality of battery cores in the battery module, between battery core and the casing to influence the safety in utilization, the reliability of battery module.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a battery module, which has high reliability.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a battery module, comprising: the battery cell comprises a plurality of battery cells, a plurality of battery cells and a plurality of battery cells, wherein the battery cells are sequentially arranged along the thickness direction; the insulating elastic plate is suitable for being clamped between the two adjacent electric cores; the insulating elastic plate is matched with the battery cell in size and shape and is attached to the battery cell.

According to some embodiments of the utility model, the battery module still includes the group battery, the group battery includes: at least one of the cells; the connecting sheet is arranged at the top of the battery cell and is connected with the battery cell; the cover plate is connected with the connecting piece and is positioned on one side, deviating from the battery core, of the connecting piece.

According to some embodiments of the utility model, the battery module still includes: a case having one end opened and formed with an accommodation space in which the battery pack is disposed.

According to some embodiments of the utility model, the electric core with be provided with between the internal face of casing insulating elastic plate.

According to some embodiments of the invention, the cover plate set up in the opening of casing, and with the casing links to each other, in order to shelter from accommodation space.

According to some embodiments of the invention, the upper surface of the cover plate is flush with the upper edge of the opening.

According to the utility model discloses a some embodiments, the group battery is a plurality of, and a plurality of group batteries are followed the thickness direction of electricity core is arranged in proper order.

According to some embodiments of the utility model, two adjacent settings be equipped with between the group battery insulating elastic plate.

According to some embodiments of the invention, two adjacent settings apron in the group battery is parallel and level in the direction of height and links to each other.

Compared with the prior art, battery module have following advantage:

because, certain change can be produced at the charge-discharge in-process volume to electric core, and the extrusion force between electric core and the electric core can be cushioned to the insulating elastic plate between the electric core, prevents to produce the rigidity extrusion force between the electric core, controls the dimensional change of battery module effectively, improves use reliability, the security of battery module.

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

a battery pack comprises the battery module.

The advantages of the battery pack and the battery module are the same as those of the battery module in the prior art, and are not described herein again.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present invention;

fig. 2 is a schematic view illustrating a battery pack according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating the cooperation between the battery pack and the insulating elastic plate according to an embodiment of the present invention.

Description of reference numerals:

a battery module 100,

A battery pack 10, a battery cell 11, a connecting sheet 12, a cover plate 13,

Insulating elastic plate 20, casing 30.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The invention will be described in detail below with reference to the accompanying drawings 1-3 in conjunction with an embodiment.

According to the utility model discloses battery module 100 includes: insulating elastic plate 20 and a plurality of electric core 11, a plurality of electric cores 11 arrange along the thickness direction in proper order, and insulating elastic plate 20 presss from both sides and sets up between two adjacent electric cores 11 that set up. The insulating elastic plate 20 is adapted to the size and shape of the battery cell 11, and the insulating elastic plate 20 is attached to the battery cell 11.

It is understood that the volume of the battery cell 11 may change during the charge and discharge of the battery cell 11. When the battery cell 11 expands to increase its volume, the insulating elastic plate 20 attached to the battery cell 11 may elastically deform correspondingly to buffer the rigid extrusion force existing between the battery cell 11 and the battery cell 11, and between the battery cell 11 and the casing 30 when the battery cell 11 changes its volume. Therefore, the extrusion force generated by the expansion of the battery cell 11 on the casing 30 and other battery cells 11 can be reduced, so that the size change of the battery module 100 can be effectively controlled, and the use reliability and safety of the battery module 100 can be improved.

Specifically, the insulating elastic plate 20 has good insulating and elastic properties, so that the insulating elastic plate 20 is not conductive, and the problem of short circuit can be prevented. Meanwhile, when the battery cell 11 expands, the insulating elastic plate 20 may elastically deform accordingly to absorb the pressing force generated by the expansion of the battery.

Further, because insulating elastic plate 20 presss from both sides to establish and arranges between two adjacent electric cores 11 that set up, insulating elastic plate 20 sets up with the laminating of electric core 11 moreover for insulating elastic plate 20 can cooperate the deformation of electric core 11 better, and the cooperation between a plurality of electric cores 11 is compact simultaneously, can improve battery module 100's reliability.

According to the utility model discloses battery module 100, electric core 11 can produce certain change at the charge-discharge in-process volume, and the extrusion force between electric core 11 and the electric core 11 can be cushioned to insulating elastic plate 20 between the electric core 11, prevents to produce the rigidity extrusion force between the electric core 11, controls battery module 100's dimensional change effectively, improves battery module 100's use reliability, security.

In some embodiments of the present invention, the battery module 100 includes a battery pack 10, and the battery pack 10 includes: a connecting piece 12, a cover plate 13 and at least one cell 11.

Referring to fig. 2 and 3, the connecting piece 12 is disposed on the top of the battery cell 11 and connected to the battery cell 11, and the cover plate 13 is connected to the connecting piece 12 and located on a side of the connecting piece 12 away from the battery cell 11. That is to say, apron 13 and electric core 11 pass through connection piece 12 and link to each other, and apron 13 is used for sheltering from the top of electric core 11 to prevent that electric core 11 from exposing in battery module 100, thereby play good guard action to electric core 11.

Further, each battery pack 10 may include a plurality of battery cells 11, the plurality of battery cells 11 are simultaneously connected to a connecting piece 12, and the connecting piece 12 is further connected to the cover plate 13 so that the cover plate 13 can simultaneously cover the plurality of battery cells 11. It can be understood that, in the assembly process of the battery module 100, a plurality of battery cells 11 in the battery pack 10 can be arranged in the battery module 100 at the same time, so that the difficulty of arrangement of the battery cells 11 in the battery module 100 is reduced, and the assembly efficiency is improved.

In some embodiments of the present invention, the battery module 100 further includes a case 30, one end of the case 30 is opened and is formed with an accommodation space, and the battery pack 10 is disposed in the accommodation space. Casing 30 can hold and spacing group battery 10, and casing 30 can also shelter from electric core 11, connection piece 12 in group battery 10 simultaneously, prevents that electric core 11 from exposing to electric core 11 plays good guard action, with the reliability that promotes battery module 100.

In some embodiments of the present invention, an insulating elastic plate 20 is disposed between the battery cell 11 and the inner wall surface of the casing 30. The insulating elastic plate 20 has good insulating property, and can prevent a short circuit between the casing 30 and the battery cell 11. Meanwhile, in the charging and discharging process, when the battery cell 11 expands, the insulating elastic plate 20 can deform elastically to absorb the extrusion force generated by the expansion of the battery, so that the rigid extrusion force between the battery cell 11 and the casing 30 is prevented, and the use safety and reliability of the battery module 100 are improved.

Optionally, the insulating elastic plate 20 between the battery cell 11 and the casing 30 and the insulating elastic plate 20 between the battery cell 11 and the battery cell 11 are of the same structure, and the insulating elastic plate 20 between the battery cell 11 and the casing 30 is attached to the battery cell 11.

In some embodiments of the present invention, the cover plate 13 is disposed at the opening of the housing 30, and the cover plate 13 is connected to the housing 30 to shield the accommodating space. The cover plate 13 is used to close the opening of the casing 30 to prevent the battery cell 11 from being exposed, so as to provide good protection for the battery cell 11.

Further, the cover plate 13 is connected with the shell 30 in a welding mode, the welding mode is high in reliability and simple to operate, and the connection strength of the cover plate 13 and the shell 30 can be guaranteed.

The utility model discloses in further embodiment, the upper surface of apron 13 and the last border parallel and level of opening part to make battery module 100's structure regular, reduce the installation degree of difficulty at apron 13 and opening cooperation department, can prevent simultaneously that apron 13 relative opening part undercut from resulting in the problem emergence of lapping 13 upper surface deposition ash, promote battery module 100's reliability.

In some embodiments of the present invention, the battery pack 10 is plural, and the plural battery packs 10 are sequentially arranged along the thickness direction of the battery cell 11, so that the plural battery packs 10 can be regularly arranged in the housing 30 of the battery module 100.

In a further embodiment of the present invention, an insulating elastic plate 20 is disposed between two adjacent battery packs 10. The insulating elastic plate 20 can elastically deform within a certain pressure range, so that the battery cell 11 elastically deforms correspondingly when colliding during the charging and discharging process, thereby buffering the extrusion force between the two battery packs 10 and improving the use reliability of the battery module 100.

In some embodiments of the present invention, referring to fig. 1, the cover plates 13 in two adjacent battery packs 10 are flush and connected in the height direction. The apron 13 structure that the parallel and level was arranged is regular, and apron 13 after connecting can play and shelter from the open-ended effect of sealed casing 30, plays good effect of sheltering from to electric core 11 in the casing 30, prevents that electric core 11 from exposing, can avoid pollutants such as the outside dust of battery module 100 to get into casing 30 simultaneously, promotes battery module 100's use reliability.

Further, the cover plate 13 and the cover plate 13 can be connected in a welding mode, the welding mode is high in reliability and simple to operate, and the connection strength of the cover plate 13 and the cover plate 13 can be guaranteed.

In some optional embodiments of the present invention, the material of the insulating elastic plate 20 may be one of PP material (polypropylene), PE material (polyethylene), PET material (polyethylene terephthalate) and PVC material (polyvinyl chloride). The material has good insulating property and good elastic deformation capacity, and can play a role in buffering the extrusion force between the battery cell 11 and between the battery cell 11 and the shell 30, so that the use reliability of the battery module 100 is improved.

According to the utility model discloses battery package, battery package include foretell battery module 100, the change of electric core 11 size can effectively be controlled to insulating elastic plate 20 among the battery module 100 to battery module 100 has good safety in utilization, and then promotes battery package's safety in utilization.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery module (100), comprising:

the battery cell structure comprises a plurality of battery cells (11), wherein the battery cells (11) are sequentially arranged along the thickness direction;

an insulating elastic plate (20), wherein the insulating elastic plate (20) is suitable for being clamped between two adjacent battery cores (11);

the insulating elastic plate (20) is matched with the battery cell (11) in size and shape and is attached to the battery cell (11).

2. The battery module (100) according to claim 1, further comprising a battery pack (10), the battery pack (10) comprising:

at least one of said cells (11);

the connecting sheet (12) is arranged at the top of the battery cell (11), and the connecting sheet (12) is connected with the battery cell (11);

the cover plate (13), the cover plate (13) with connection piece (12) link to each other, and be located connection piece (12) deviate from one side of electricity core (11).

3. The battery module (100) according to claim 2, further comprising: a case (30) having one end of the case (30) opened and formed with an accommodation space in which the battery pack (10) is disposed.

4. The battery module (100) according to claim 3, wherein the insulating elastic plate (20) is provided between the battery cell (11) and an inner wall surface of the case (30).

5. The battery module (100) according to claim 3, wherein the cap plate (13) is provided at the opening of the case (30) and is connected to the case (30) to shield the receiving space.

6. The battery module (100) according to claim 5, wherein an upper surface of the cap plate (13) is flush with an upper edge of the opening.

7. The battery module (100) according to claim 2, wherein the battery pack (10) is provided in plurality, and the plurality of battery packs (10) are arranged in sequence in the thickness direction of the battery cell (11).

8. The battery module (100) according to claim 7, wherein the insulating elastic plate (20) is provided between two adjacently disposed battery packs (10).

9. The battery module (100) according to claim 7, wherein the lid plates (13) in two adjacently disposed battery packs (10) are flush in the height direction and are connected.

10. A battery pack, characterized by comprising the battery module (100) according to any one of claims 1 to 9.