CN-224232732-U - Battery pack and electric automobile

CN224232732UCN 224232732 UCN224232732 UCN 224232732UCN-224232732-U

Abstract

The application relates to a battery pack and an electric automobile. The battery pack comprises a box body, a battery cell module and a second heating film, wherein the box body comprises a battery accommodating cavity, the battery cell module is arranged in the battery accommodating cavity, the battery cell module comprises at least one row of battery cell modules, each row of battery cell modules comprises a plurality of battery cells arranged side by side, the first heating film is attached to one side, away from the bottom surface of the battery accommodating cavity, of the battery cell module, the second heating film is perpendicular to the battery cells of the battery cell modules in a side-by-side direction, and the second heating film is attached to the inner side of the box body.

Inventors

LIN WEIFANG
ZHAO XINGMAO
SUN MINGTI
WANG LIGUAN
LIU GUOXIN

Assignees

浙江极氪智能科技有限公司
威睿电动汽车技术(宁波)有限公司
浙江吉利控股集团有限公司

Dates

Publication Date: 20260512
Application Date: 20250530

Claims (10)

1. A battery pack, comprising: the box body comprises a battery accommodating cavity; The battery cell module is arranged in the battery accommodating cavity and comprises at least one row of battery cell groups, and each row of battery cell groups comprises a plurality of battery cells arranged side by side; The first heating film is attached to one side of the cell module, which is away from the bottom surface of the battery accommodating cavity; the second heating film is perpendicular to the battery cells of the battery cell group in the side-by-side direction, and is attached to the inner side of the box body.
2. The battery pack according to claim 1, wherein the battery pack comprises a plurality of second heating films, the plurality of second heating films are arranged in groups, and a single electric core group is arranged between each group of second heating films.
3. The battery pack of claim 1, wherein the first heating film and the second heating film are connected in series or in parallel by an electrical connection harness into an electrical circuit, the electrical circuit being electrically connected to a single power source.
4. The battery pack according to claim 1, wherein the case includes a groove recessed inward from an inner side, and the second heating film is attached to a bottom surface of the groove.
5. The battery pack of claim 4, wherein the depth of the groove is greater than the thickness of the second heating film.
6. The battery pack according to claim 1, further comprising insulating layers provided in one-to-one correspondence with the second heating films, each of the insulating layers being attached to the inside of the case and covering the corresponding second heating film.
7. The battery pack of claim 1, wherein the battery pack comprises a plurality of cell stacks; the box body comprises at least one longitudinal beam which is positioned in the battery accommodating cavity and arranged along the side-by-side direction of the battery cells, and each longitudinal beam is positioned between two adjacent battery cell groups.
8. The battery pack according to claim 1, wherein the first heating film includes a first insulating film, a second insulating film, and a first heating wire disposed between the first insulating film and the second insulating film, the first heating film is provided with a first buffer groove penetrating at least one of the first insulating film and the second insulating film, and the first buffer groove is recessed from the first heating wire.
9. The battery pack according to claim 1, wherein the second heating film includes a third insulating film, a fourth insulating film, and a second heating wire disposed between the third insulating film and the fourth insulating film, the second heating film being provided with a second buffer groove penetrating at least one of the third insulating film and the fourth insulating film, the second buffer groove being recessed from the second heating wire.
10. An electric vehicle comprising the battery pack according to any one of claims 1 to 9.

Description

Battery pack and electric automobile Technical Field The application relates to the technical field of vehicles, in particular to a battery pack and an electric automobile. Background With the popularization of new energy automobiles, electric automobiles are becoming one of the choices for the public to go out. The power battery is used as one of the core components of the electric vehicle, and directly influences the cruising ability of the electric vehicle. At present, in the related art, the battery is heated in a low-temperature environment such as winter, but the heat preservation effect is not obvious, and the temperature difference of the battery is obvious. Disclosure of utility model The application provides a battery pack and an electric automobile, which are used for solving the technical problems in the related art. According to a first aspect of an embodiment of the present application, there is provided a battery pack including: the box body comprises a battery accommodating cavity; The battery cell module is arranged in the battery accommodating cavity and comprises at least one row of battery cell groups, and each row of battery cell groups comprises a plurality of battery cells arranged side by side; The first heating film is attached to one side of the cell module, which is away from the bottom surface of the battery accommodating cavity; the second heating film is perpendicular to the battery cells of the battery cell group in the side-by-side direction, and is attached to the inner side of the box body. Optionally, the battery pack includes a plurality of second heating films, and the plurality of second heating films are arranged in pairs, and a single electric core group is arranged between each group of second heating films. Optionally, the first heating film and the second heating film are connected in series or in parallel through an electric connection wire harness to form an electric loop, and the electric loop is electrically connected with a single power supply. Optionally, the case includes a groove recessed inward from an inner side, and the second heating film is attached to a bottom surface of the groove. Optionally, the depth of the groove is greater than the thickness of the second heating film. Optionally, the heating device further comprises an insulating layer, wherein the insulating layer is arranged in one-to-one correspondence with the second heating films, and each insulating layer is attached to the inner side of the box body and covers the corresponding second heating film. Optionally, the battery pack includes a plurality of battery cell groups; the box body comprises at least one longitudinal beam which is positioned in the battery accommodating cavity and arranged along the side-by-side direction of the battery cells, and each longitudinal beam is positioned between two adjacent battery cell groups. Optionally, the first heating film includes a first insulating film, a second insulating film and a first heating wire disposed between the first insulating film and the second insulating film, the first heating film is provided with a first buffer slot penetrating at least one of the first insulating film and the second insulating film, and the first buffer slot is avoided by the first heating wire. Optionally, the second heating film includes a third insulating film, a fourth insulating film and a second heating wire disposed between the third insulating film and the fourth insulating film, the second heating film is provided with a second buffer slot penetrating at least one of the third insulating film and the fourth insulating film, and the second buffer slot is avoided by the second heating wire. According to a first aspect of embodiments of the present application, there is provided an electric vehicle comprising a battery pack according to any one of the embodiments described above. The technical scheme provided by the embodiment of the application can comprise the following beneficial effects: According to the application, the box body can be heated through the second heating film, so that the heating of the battery cell module is indirectly realized, the temperature uniformity of the battery cell module is kept, the temperature difference of the battery is reduced, and the cruising ability of the battery cell module is improved. From the foregoing embodiments, it should be understood that the general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed. Drawings The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. Fig. 1 is a schematic view illustrating a structure of a battery pack according to an exemplary embodiment. Fig. 2 is a schematic structural view of a case according to an exe