CN216958310U

CN216958310U - Power battery and electric vehicle with same

Info

Publication number: CN216958310U
Application number: CN202123452282.3U
Authority: CN
Inventors: 杨观生; 马安; 罗顺平; 薛莉; 成玲
Original assignee: Zhuhai Gree Titanium Electric Appliance Co ltd; Gree Altairnano New Energy Inc
Current assignee: Zhuhai Gree Titanium Electric Appliance Co ltd; Gree Altairnano New Energy Inc
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-07-12
Anticipated expiration: 2031-12-31

Abstract

The utility model provides a power battery and an electric vehicle with the same. The power battery comprises a battery module 1, a buffer part 2 and a flexible circuit board 3, wherein the battery module 1 is provided with a mounting surface 11, the buffer part 2 is at least one, the buffer part 2 is connected with the mounting surface 11, part of the flexible circuit board 3 is connected with the battery module 1, the other part of the flexible circuit board 3 is connected with the buffer part 2, and the buffer part 2 is positioned between the flexible circuit board 3 and the battery module 1. By applying the technical scheme of the utility model, the buffer part is arranged on the mounting surface of the battery module, the flexible circuit board is connected with the mounting surface and the buffer part, and after the flexible circuit board is connected with the buffer part, a stretching space is formed on the flexible circuit board.

Description

Power battery and electric vehicle with same

Technical Field

The utility model relates to the technical field of battery design and manufacture, in particular to a power battery and an electric vehicle with the same.

Background

In lithium battery PACK case use, the number of times along with charge and discharge increases the battery and can produce the bulging force to cause the whole tensile deformation of battery module. In the design of battery module, the design of aluminium row has arch buffer structure, arranges with the influence that reduces the bulging force to aluminium row and utmost point post. However, generally, the FPCB plate (i.e., the flexible circuit board) is in a flat state, and cannot absorb a tensile force caused by deformation of the battery module.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a power battery and an electric vehicle with the same, and aims to solve the problem that a flexible circuit board in the prior art cannot buffer tension caused by deformation of a battery module.

In order to achieve the above object, according to one aspect of the present invention, there is provided a power battery including: a battery module having a mounting surface; the buffer component is at least one and is connected with the mounting surface; and part of the flexible circuit board is connected with the battery module, and the other part of the flexible circuit board is connected with a buffer piece, wherein the buffer piece is positioned between the flexible circuit board and the battery module.

Furthermore, at least one pressure relief valve is arranged on the mounting surface of the battery module; the flexible circuit board is provided with at least one avoidance hole which is used for avoiding the pressure release valve.

Further, the buffer member is bonded to the mounting surface.

Further, the flexible circuit board is bonded with at least one of the battery module and the buffer member.

Further, the buffer member includes: a first mounting surface connected to the mounting surface; and the second mounting surface is connected with the first mounting surface, the second mounting surface is arranged in a protruding manner in the direction deviating from the mounting surface, and the second mounting surface is connected with part of the flexible circuit board.

Further, the second mounting surface is an arc surface.

Further, the cross section of the second mounting surface is semicircular trapezoid, rectangle or triangle.

Further, the material of the buffer piece is made of foam.

Further, the relief valve is a plurality of, and the bolster sets up between adjacent relief valve.

According to another aspect of the utility model, an electric vehicle is provided, which comprises a power battery, wherein the power battery is the power battery.

By applying the technical scheme of the utility model, the buffer part is arranged on the mounting surface of the battery module, the flexible circuit board is connected with the mounting surface and the buffer part, and after the flexible circuit board is connected with the buffer part, a stretching space is formed on the flexible circuit board.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of a power cell according to the utility model;

FIG. 2 shows a schematic structural diagram of an embodiment of a flexible circuit board according to the present invention;

FIG. 3 shows a schematic structural view of an embodiment of a buffer according to the present invention;

fig. 4 shows a schematic structural view of an embodiment of a battery module according to the present invention.

Wherein the figures include the following reference numerals:

1. a battery module; 11. a mounting surface; 12. a pressure relief valve;

2. a buffer member; 21. a first mounting surface; 22. a second mounting surface;

3. a flexible circuit board; 31. avoiding the hole.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1 to 4, according to an embodiment of the present application, a power battery is provided.

The power battery comprises a battery module 1, a buffer part 2 and a flexible circuit board 3, wherein the battery module 1 is provided with a mounting surface 11, the buffer part 2 is at least one, the buffer part 2 is connected with the mounting surface 11, part of the flexible circuit board 3 is connected with the battery module 1, the other part of the flexible circuit board 3 is connected with the buffer part 2, and the buffer part 2 is positioned between the flexible circuit board 3 and the battery module 1.

Use the technical scheme of this embodiment, set up bolster 2 on battery module 1's mounting surface 11, flexible circuit board 3 is connected with mounting surface 11 and bolster 2, flexible circuit board 3 is connected the back with bolster 2, form tensile space on the flexible circuit board 3, when battery module 1 takes place the inflation in the course of the work and produces pulling force or takes place deformation, the tensile space on the flexible circuit board 3 can cushion this pulling force and to the tensile influence of flexible circuit board 3, avoid flexible circuit board 3 to damage.

Further, at least one pressure relief valve 12 is arranged on the mounting surface 11 of the battery module 1; the flexible circuit board 3 is provided with at least one avoidance hole 31, and the avoidance hole 31 is used for avoiding the pressure release valve 12. The relief valve 12 is used for the exhaust of battery module 1 in the charge-discharge process, and the hole of dodging 31 of seting up on the flexible circuit board 3 is used for dodging the relief valve 12, can make the relief valve 12 not sheltered from, avoids the too big emergence explosion accident of pressure. In the embodiment of the present application, the battery module 1 includes at least one battery cell, each battery cell includes at least one pressure relief valve 12, and a surface of the pressure relief valve 12 is provided with a layer of metal film.

Preferably, the buffer 2 is bonded to the mounting surface 11. Specifically, the adhesion between the buffer member 2 and the mounting surface 11 can be realized by using the adhesive tape, the adhesion mode is simple and convenient, and the abrasion to the buffer member 2 and the mounting surface 11 can be avoided.

Further, the flexible circuit board 3 is bonded to at least one of the battery module 1 and the buffer member 2. In an embodiment of the present application, after the adhesive substance is applied to the surface of the flexible circuit board 3 for adhesion, a part of the flexible circuit board 3 is adhered to the battery module 1, and another part of the flexible circuit board 3 is adhered to the buffer member 2. Optionally, a strap adhesive is used for bonding, and the strap adhesive is attached to one side of the flexible circuit board 3 for bonding.

Specifically, the buffer member 2 includes: a first mounting surface 21, the first mounting surface 21 being connected to the mounting surface 11; and the second mounting surface 22, the second mounting surface 22 is connected with the first mounting surface 21, the second mounting surface 22 is arranged in a protruding mode in a direction departing from the mounting surface 11, and the second mounting surface 22 is connected with part of the flexible circuit board 3. The second mounting surface 22 protrudes away from the mounting surface 11, when the battery module 1 expands, the volume of the second mounting surface 22 changes, and the buffer member can effectively buffer the stretching influence of the expansion force on the flexible circuit board 3 through the position change of the highest point of the second mounting surface 22.

Preferably, the second mounting surface 22 is a cambered surface. When the cambered surface is arranged, the flexible circuit board 3 can be connected with the second mounting surface 22, the flexible circuit board 3 is completely attached to the second mounting surface 22, and a gap between the flexible circuit board 3 and the second mounting surface 22 is prevented from being too large, so that the flexible circuit board 3 is separated from the second mounting surface 22 in the using process, and the effect of buffering the tensile force of the buffering part 2 on the flexible circuit board 3 is influenced.

Alternatively, the second mounting surface 22 may have a semicircular, trapezoidal, rectangular, or triangular cross-section. Preferably, in one embodiment of the present application, the second mounting surface 22 is semicircular in cross section

Wherein, the material of the buffer member 2 is made of foam. The foam has good elasticity and ductility. Use the cotton preparation bolster 2 of bubble can take place the inflation and play the cushioning effect better when producing the tensile force at battery module 1, avoid the damage of flexible circuit board 3. In practical application, other materials with better ductility and elasticity can be selected to manufacture the buffer member 2.

The relief valves 12 are plural, and the cushion member 2 is provided between the adjacent relief valves 12. The arrangement can prevent the buffer 2 from blocking the pressure release valve 12 and prevent the explosion accident caused by overlarge pressure.

According to another specific embodiment of the present application, there is also provided a method for installing a power battery in the above embodiments, specifically, the power battery in the present application includes: battery module 1, bolster 2, flexible circuit board 3, be provided with the relief valve structure in the battery module 1, it is corresponding, set up a plurality of relief valves 12 on the mounting surface 11 of battery module 1, set up a plurality of holes of dodging 31 on the flexible circuit board 3, bolster 2 includes first installation face 21 and second installation face 22, first installation face 21 is connected with mounting surface 11, second installation face 22 deviates from the direction protrusion setting of mounting surface 11, second installation face 22 is the cambered surface, second installation face 22's cross-section is semi-circular, in this embodiment, bolster 2's material is made by the bubble cotton.

The installation method of the power battery comprises the following steps:

s1: coating adhesive on the first mounting surface 21 of the buffer member 2, and coating adhesive on the surface of the flexible circuit board 3 connected with the buffer member 2;

s2: flatly adhering the buffer member 2 to the mounting surface 11 of the battery module 1;

s3: the installation flexible circuit board 3, the relief valve 12 on the flexible circuit board 3 corresponds with the relief valve 12 of battery module 1 during the installation, and the flexible circuit board 3 should extrude to laminating with the mounting surface of battery module 1 and the second installation face 22 of buffer 2 completely.

By adopting the method, the flexible circuit board 3 is mounted after the buffer part 2 is pasted, so that an arch structure is added to the flexible circuit board 3 in the mounting process, the stretching influence on the flexible circuit board 3 caused by the expansion force generated by the battery module 1 in the charging process is effectively buffered, meanwhile, the flexible circuit board 3 and the buffer part 2 are mounted in a close fit manner, and the buffer part 2 can support the flexible circuit board 3, so that the flexible circuit board 3 is mounted more firmly.

According to another specific embodiment of the present application, an electric vehicle is provided, which includes a power battery, and the power battery is the power battery described above.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the utility model to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A power cell, comprising:

a battery module (1), the battery module (1) having a mounting surface (11);

at least one buffer (2), wherein the buffer (2) is connected with the mounting surface (11);

flexible circuit board (3), part flexible circuit board (3) with battery module (1) is connected, another part flexible circuit board (3) with bolster (2) are connected, wherein, bolster (2) are located flexible circuit board (3) with between battery module (1).

2. The power cell of claim 1,

at least one pressure relief valve (12) is arranged on the mounting surface (11) of the battery module (1);

the flexible circuit board (3) is provided with at least one avoidance hole (31), and the avoidance hole (31) is used for avoiding the pressure release valve (12).

3. A power cell according to claim 1, characterised in that the buffer (2) is bonded to the mounting surface (11).

4. The power battery according to claim 1, characterized in that the flexible circuit board (3) is bonded with at least one of the battery module (1) and the buffer member (2).

5. A power cell according to claim 1, characterized in that the buffer (2) comprises:

a first mounting surface (21), the first mounting surface (21) being connected to the mounting surface (11);

the second installation surface (22), the second installation surface (22) is connected with the first installation surface (21), the second installation surface (22) is arranged in a protruding mode in the direction away from the installation surface (11), and the second installation surface (22) is connected with part of the flexible circuit board (3).

6. The power battery according to claim 5, characterized in that the second mounting surface (22) is an arc surface.

7. The power battery according to claim 5, wherein the cross section of the second mounting surface (22) is in the shape of a semi-circular trapezoid, a rectangle or a triangle.

8. The power battery according to claim 1, characterized in that the material of the buffer member (2) is made of foam.

9. The power battery according to claim 2, wherein the pressure release valves (12) are plural, and the buffer member (2) is provided between the adjacent pressure release valves (12).

10. An electric vehicle comprising a power battery, wherein the power battery is the power battery of any one of claims 1-9.