CN214706051U

CN214706051U - Battery module, battery package and electric automobile

Info

Publication number: CN214706051U
Application number: CN202120596131.6U
Authority: CN
Inventors: 何亚飞
Original assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Current assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-11-12
Anticipated expiration: 2031-03-24

Abstract

The utility model relates to the technical field of batteries, in particular to a battery module, a battery pack and an electric vehicle. The battery module includes an electric core and a heating assembly, and a plurality of electric cores are arranged in parallel; connect. By arranging the heating sheet between two adjacent cells, the heating sheet can be prevented from being separated, the risk of dry burning is avoided, and the safety performance of the battery module is improved; in addition, the heating sheet is arranged between at least two adjacent cells. The number of heating chips can be set according to the needs, and it is not limited to only setting heating chips at the left and right ends of multiple cells, increasing the area of the heating chips and the contact area with the cells, so as to better The battery core is heated to the ground to improve the charging rate of the battery module in a low temperature environment. By applying the above-mentioned battery module, the battery pack has high safety and high charging efficiency.

Description

Battery module, battery package and electric automobile

Technical Field

The utility model relates to a battery technology field especially relates to a battery module, battery package and electric automobile.

Background

Generally, a battery module is formed by combining a plurality of battery cells in series/parallel. Conventionally, in order to rapidly raise the temperature of a battery module at a low temperature and improve the charging efficiency, heating sheets are generally attached to the left and right sides of the battery module. The heating plate in the existing battery module has the following problems: 1) the heating sheet on the battery module is easy to fall off, so that the heating sheet is dried and burnt, and safety risk is generated; 2) the area of the side face of the battery module is small, the area of the heating sheet is limited, and the heating effect of the battery module cannot meet the requirement.

Therefore, a battery module is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

A first object of the utility model is to provide a battery module, the heating plate is difficult for droing, and the security is high, and the heating plate area is big, heats effectually.

A second object of the utility model is to provide a battery pack, through using above-mentioned battery module, the security is high, and charging efficiency is high.

A third object of the present invention is to provide an electric vehicle, which has high safety and high charging efficiency by using the above battery pack.

In order to realize the purpose, the following technical scheme is provided:

in a first aspect, a battery module is provided, including:

the battery cell comprises a plurality of battery cells which are arranged in parallel;

and the heating assembly comprises heating sheets, at least two heating sheets are arranged adjacently, and the heating sheets are arranged between the battery cores and are electrically connected with each other.

As the optional scheme of battery module, the battery module still includes the buffer piece, every all paste on the both sides face of heating plate and be equipped with the buffer piece.

As an alternative of the battery module, the heating assembly further includes an electrical connection portion through which adjacent two of the heating sheets are connected.

As an alternative to the battery module, a plurality of the heating sheets are connected to a plurality of the electrical connection parts in a serpentine arrangement.

As an alternative of the battery module, the heating assembly further comprises an outgoing line, the outgoing line is connected to the heating sheet matched with the battery core on the outermost side, and the outgoing line is used for being electrically connected with an external power supply.

As an alternative of the battery module, the battery module further comprises a fixing sheet, and the outgoing line is fixed on the side wall of the battery core through the fixing sheet.

As an alternative of the battery module, the buffer sheet is a foam double-sided adhesive tape; and/or the fixing piece is a foam double-sided adhesive tape.

As an alternative of the battery module, two battery cores are arranged between two adjacent heating sheets.

In a second aspect, a battery pack is provided, which includes the battery module as described above.

In a third aspect, an electric vehicle is provided, which comprises the battery pack as described above.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a battery module, which comprises a plurality of battery cores and a heating component, wherein the battery cores are arranged in parallel; the heating assembly comprises heating sheets, the heating sheets are arranged between at least two adjacent electric cores, and the at least two heating sheets are electrically connected. The heating sheets are arranged between the two adjacent electric cores, so that the heating sheets can be prevented from being separated, the risk of dry burning is avoided, and the safety performance of the battery module is improved; in addition, set up the heating plate between at least two adjacent electric cores, can realize setting up the quantity of heating plate as required, and do not confine to and can only set up the heating plate at both ends about a plurality of electric cores, increase the area of heating plate and with the area of contact of electric core to can heat electric core better, realize under low temperature environment, improve the charge rate of battery module.

The utility model provides a battery pack, through using above-mentioned battery module, the security is high, and charging efficiency is high.

The utility model provides an electric automobile, through using above-mentioned battery package, the security is high, and charging efficiency is high.

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 following description 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 structural diagram of a battery module according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a heating assembly according to an embodiment of the present invention;

fig. 3 is a schematic layout view of a heating sheet and a buffer sheet according to an embodiment of the present invention.

Reference numerals:

10-electric core;

20-a heating assembly; 201-heating plate; 202-an electrical connection; 203-outlet;

30-a buffer sheet;

40-a fixing sheet;

50-upper cover;

60-end plate.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution of the present invention is further described below by referring to the drawings and the detailed description.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

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 first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1-2, the present embodiment provides a battery module, which includes a plurality of battery cells 10 and a heating assembly 20, where the plurality of battery cells 10 are arranged in parallel; the heating assembly 20 includes a heating sheet 201, the heating sheet 201 is disposed between at least two adjacent battery cores 10, and at least two heating sheets 201 are electrically connected to each other. By arranging the heating sheet 201 between two adjacent electric cores 10, the heating sheet 201 can be prevented from being separated, the risk of dry burning is avoided, and the safety performance of the battery module is improved; in addition, set up heating plate 201 between two at least adjacent electric cores 10, can realize setting up the quantity of heating plate 201 as required, and do not confine to and only can set up heating plate 201 at both ends about a plurality of electric cores 10, increase heating plate 201's area and with the area of contact of electric core 10 to can heat electric core 10 better, realize under low temperature environment, improve battery module's charge rate.

As shown in fig. 3, the battery module further includes buffer sheets 30, and the buffer sheets 30 are attached to both side surfaces of each of the heating sheets 201. The buffer sheet 30 is used for absorbing the deformation of the battery core 10 caused by thermal expansion, so that the heating sheet 201 is prevented from being damaged due to the thermal expansion of the battery core 10, and the stability of the battery module is improved.

Optionally, be provided with two electric cores 10 between two adjacent heating plates 201, can fully heat electric core 10 promptly, can reduce the size of battery module in length direction again. Of course, in other embodiments, the heating sheets 201 may be disposed between each two adjacent battery cells 10 in each group according to needs, or three, four, and the like battery cells 10 may be disposed between two adjacent heating sheets 201, which may be specifically designed according to needs and is not illustrated herein.

Optionally, the buffer sheet 30 may adopt a foam double-sided tape, which can absorb the deformation of the electrical core 10 caused by thermal expansion on the one hand, and is convenient to paste on the heating sheet 201 on the other hand, and is convenient to paste the heating sheet 201 on the surface of the electrical core 10, so as to prevent the heating sheet 201 from falling off.

Further, the heating assembly 20 further includes an electrical connection portion 202, and two adjacent heating sheets 201 are connected by the electrical connection portion 202, so that electrical transmission between the plurality of heating sheets 201 is realized, and the heating sheets 201 are electrified to generate heat.

Preferably, a plurality of heating plates 201 and a plurality of electric connection portion 202 are arranged in a serpentine and are connected, that is to say, can make full use of the space, can realize the electric connection between a plurality of heating plates 201 again, guarantee that a plurality of heating plates 201 are connected in series and are switched on and produce heat to electric core 10 heats.

Preferably, the heating assembly 20 further includes an outgoing line 203, and the outgoing line 203 is connected to the heating plate 201 matched with the outermost battery cell 10, and the outgoing line 203 is used for electrically connecting with an external power supply.

Note that the lead-out line 203 does not substantially generate heat, and does not affect the side wall of the battery cell 10.

Optionally, the battery module further includes a fixing sheet 40, and the lead-out wire 203 is fixed on the side wall of the battery cell 10 through the fixing sheet 40. Exemplarily, the fixing sheet 40 may adopt a foam double-sided tape, and can fix the outgoing line 203 on the electrical core 10 by adhering, which is easier to operate and lower in cost compared with the rivet fixing scheme in the prior art.

In this embodiment, the battery module further includes a lower cover (not shown in the figure), an upper cover 50 and an end plate 60, the end plates 60 are disposed at two ends of the plurality of battery cells 10, the upper cover 50 is fixed on the end plate 60 and located above the battery cells 10, and the lower cover is fixed on the end plate 60 and located below the battery cells 10. The lower cover, the upper cover 50, and the end plate 60 form a frame structure for fixing the battery cell 10, so as to facilitate the installation of the battery cell 10.

The embodiment also provides a battery pack comprising the battery module. This battery package is through using above-mentioned battery module, and the security is high, and charging efficiency is high.

For example, the battery pack may include a plurality of the above battery modules, and may be designed as needed.

The embodiment also provides an electric automobile which comprises the battery pack. This electric automobile is through using above-mentioned battery package, and the security is high, and charge efficiency is high.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A battery module, comprising:

the battery cell comprises a plurality of battery cells (10), wherein the battery cells (10) are arranged in parallel;

heating element (20), including heating plate (201), at least two adjacent settings be provided with between electric core (10) heating plate (201), at least two electricity is connected between heating plate (201).

2. The battery module according to claim 1, further comprising a buffer sheet (30), wherein the buffer sheet (30) is attached to both side surfaces of each of the heating sheets (201).

3. The battery module according to claim 2, wherein the heating assembly (20) further comprises an electrical connection portion (202), and two adjacent heating sheets (201) are connected by the electrical connection portion (202).

4. The battery module according to claim 3, wherein a plurality of the heating sheets (201) are connected to a plurality of the electrical connection portions (202) in a serpentine arrangement.

5. The battery module according to claim 4, wherein the heating assembly (20) further comprises an outgoing line (203), the outgoing line (203) is connected to the heating sheet (201) matched with the outermost battery cell (10), and the outgoing line (203) is used for being electrically connected with an external power supply.

6. The battery module according to claim 5, further comprising a fixing sheet (40), wherein the lead-out wire (203) is fixed on the side wall of the battery cell (10) through the fixing sheet (40).

7. The battery module according to claim 6, wherein the buffer sheet (30) is a foam double-sided tape; and/or the fixing piece (40) is a foam double-sided adhesive tape.

8. The battery module according to any one of claims 1 to 7, wherein two battery cores (10) are arranged between two adjacent heating sheets (201).

9. A battery pack comprising the battery module according to any one of claims 1 to 8.

10. An electric vehicle characterized by comprising the battery pack according to claim 9.