CN213905460U

CN213905460U - Low-cost heating plate used in power battery pack

Info

Publication number: CN213905460U
Application number: CN202023226942.1U
Authority: CN
Inventors: 郭晓峰
Original assignee: Hefei Guoxuan High Tech Power Energy Co Ltd
Current assignee: Hefei Gotion High Tech Power Energy Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-08-06
Anticipated expiration: 2030-12-28

Abstract

The utility model discloses a low-cost heating plate of interior usefulness of power battery package, power battery package includes the battery package box, low-cost heating plate is located on the bottom of battery package box, be equipped with at least one battery module in the battery package box, low-cost heating plate includes that CR bubble is cotton and heating plate, the heating plate including being on a parallel with the linkage segment heating plate that the length direction of battery package box set up and with the linkage segment heating plate docks mutually and corresponds the section heating plate with at least one of the battery module one-to-one that sets up, it is on a parallel with to correspond the section heating plate the length direction of battery module, just the width that corresponds the section heating plate is less than the electric core width of battery module. The utility model discloses reduce the cost of whole battery from the angle that reduces the heating plate cost, wherein the heating plate is through reducing the area of heating plate under the battery module, and reduce the cotton cost of CR bubble in order to reach the purpose that reduces the heating plate cost.

Description

Low-cost heating plate used in power battery pack

Technical Field

The utility model belongs to the technical field of the battery, concretely relates to low-cost heating plate of interior usefulness of power battery package.

Background

The lithium ion battery used by the electric automobile has obvious influence on various performances by temperature, when the lithium ion battery works under a low-temperature condition, the internal resistance of the battery can be obviously increased, the capacity is sharply reduced, and the problems of low-temperature power performance reduction of the whole automobile, insufficient driving range, limited charging and the like are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a low-cost heating plate of power battery package internal use to overcome above-mentioned technical problem.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a low-cost heating plate of using in power battery package, power battery package includes the battery package box, low-cost heating plate is located on the bottom of battery package box, be equipped with along its length direction in the battery package box and be located at least one battery module on the low-cost heating plate, the side by side direction of a plurality of electricity cores in the battery module is on a parallel with the width direction of battery package box, low-cost heating plate includes CR bubble cotton and heating plate, be equipped with one on the CR bubble cotton with the recess that the heating plate shape is unanimous, the heating plate is arranged in the recess, the heating plate including be on a parallel with the linkage segment heating plate that the length direction of battery package box set up and with the linkage segment heating plate dock and with the at least one corresponding section heating plate of the battery module one-to-one that sets up, the corresponding section heating plate is on a parallel with the length direction of battery module, And the width of the corresponding section of heating sheet is smaller than the width of the battery core of the battery module.

Further, the depth of the groove is consistent with the thickness of the heating plate.

Further, the length of CR bubble cotton is less than the total width of at least one battery module that sets up, the cotton one corner end of CR bubble outwards extends has a arch, bellied outward flange with the battery membrane group outside of outermost end is in alignment in the battery package box, the lead butt of low-cost heating plate connect in on one end of linkage segment heating plate, just one end of linkage segment heating plate with bellied outward flange is in alignment.

Further, the thickness of the low-cost heating plate is 3 mm.

Further, the heating plate comprises a silica gel layer, a heating core and a silica gel layer from top to bottom in sequence.

Further, the ratio of the width of the corresponding section heating plate to the width of the battery core of the battery module is 0.4-0.55: 1.

has the advantages that: the utility model discloses reduce the cost of whole battery from the angle that reduces the heating plate cost, wherein the heating plate is through reducing the area of heating plate under the battery module, and reduce the cotton cost of CR bubble in order to reach the purpose that reduces the heating plate cost.

Drawings

FIG. 1 is a schematic view of a first embodiment of the present invention;

FIG. 2 is an exploded view of the low cost heat patch of FIG. 1;

FIG. 3 is a schematic view of a second embodiment of the present invention;

in the figure: 1. a low cost heating plate; 11. CR foam; 111. a groove; 12. a heating plate; 121. a connecting section heating plate; 122. a corresponding section of heating plate; 13. a lead wire; 2. a battery module is provided.

Detailed Description

In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships only for the purpose of describing the present invention and simplifying the description, but do not indicate or imply that the device or structure referred to must have a particular orientation and therefore 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.

A low-cost heating plate of power battery package internal use, the power battery package includes the battery package box, low-cost heating plate 1 is located on the bottom of battery package box, be equipped with along its length direction in the battery package box and be located at least one battery module 2 on the low-cost heating plate, as shown in fig. 1, the battery module is 3 (first kind of embodiment promptly), as shown in fig. 3, the battery module is 1 (second kind of embodiment promptly).

The invention is explained below by means of a first exemplary embodiment:

as shown in fig. 1, the parallel direction of the plurality of battery cells in each battery module is parallel to the width direction of the battery pack case, so that the total width of all battery modules of the battery pack case is parallel to the length direction of the battery pack case, the low-cost heating sheet includes CR foam 11 and a heating sheet 12, and the thickness of the low-cost heating sheet is preferably 3mm according to the gap between the battery film group and the battery pack case, wherein the width direction of the CR foam is the width direction of the battery pack case, and the length direction of the CR foam is the length direction of the battery pack case; as shown in fig. 1 and 2, the connection section heating plate is preferably close to one side edge of the CR foam along the length direction, at least one corresponding section heating plate 122 corresponding to the set battery module in a one-to-one manner is butted on the connection section heating plate, the corresponding section heating plate is parallel to the length direction of the battery module, and the length direction of the battery module is the parallel direction of a plurality of battery cells in the battery module; further, in order to achieve the purpose of reducing the cost, the width of the heating sheet at the corresponding section is smaller than the width of the battery core of the battery module, so that when more than two battery modules are arranged in the battery pack, the heating sheet is in a comb-shaped structure, namely as shown in fig. 1 and 2; when only one battery module is arranged in the battery pack, the heating sheet is of an L-shaped structure, namely as shown in fig. 3.

In the above, the structure of the heating sheet 12 employed is: the heating plate comprises a silica gel layer, a PI film layer, a heating core, a PI film layer and a silica gel layer in sequence from the bottom of the CR foam towards the battery module.

In the above, to ensure the heating effect, the ratio of the width of the corresponding section of the heating sheet to the width of the battery cell of the battery module is preferably ensured to be 0.4-0.55: 1, preferably 0.5: compared with the existing heating plate, the heating plate reduces the using area by half, and greatly reduces the cost.

At this moment, the reduction of the shape of the heating sheet is used, and the CR foam is correspondingly improved, the CR foam is provided with a groove 111 which is arranged on the CR foam and has the same shape with the heating sheet, the heating sheet is arranged in the groove, and the depth of the groove is consistent with the thickness of the heating sheet.

To facilitate the lead-out of the low-cost heating plate, the following structural description is made: the length that the CR steeps is cotton will be less than all battery module's total width, is in simultaneously the cotton one corner end of CR bubble outwards extends has a arch, extending direction be on a parallel with the length direction of battery package box, wherein, bellied outward flange with the battery membrane group outside of outermost end is in the battery package box is aligned, the lead wire 13 butt joint of heating plate is in the one of linkage segment heating plate is served, and the one end of linkage segment heating plate with bellied outward flange is aligned, at this moment, the recess that sets up is in on the CR steeps cotton with the linkage segment heating plate extends in step, also carries out groove machining on protruding, so can realize leading-out of lead wire.

In order to make the purpose, technical solution and advantages of the present invention more concise and clear, the present invention is described with the above embodiments, which are only used for describing the present invention, and can not be understood as a limitation to the scope of the present invention. It should be understood that any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A low-cost heating plate used in a power battery pack comprises a battery pack box body, wherein a low-cost heating plate (1) is arranged at the bottom of the battery pack box body, at least one battery module (2) located on the low-cost heating plate is arranged in the battery pack box body along the length direction of the battery pack box body, the side-by-side directions of a plurality of battery cores in the battery module body are parallel to the width direction of the battery pack box body, the low-cost heating plate is characterized by comprising CR foam (11) and a heating plate (12), a groove (111) with the same shape as the heating plate is arranged on the CR foam, the heating plate is arranged in the groove and comprises a connecting section heating plate (121) parallel to the length direction of the battery pack box body and at least one corresponding section heating plate (122) which is butted with the connecting section heating plate and corresponds to the set battery module one by one, the corresponding section heating plate is parallel to the length direction of the battery module, and the width of the corresponding section heating plate is smaller than the width of the battery core of the battery module.

2. The low-cost heat patch for use in a power battery pack of claim 1, wherein the depth of the recess corresponds to the thickness of the heat patch.

3. The low-cost heating plate for use in a power battery pack according to claim 1, wherein the CR foam has a length less than the total width of at least one battery module, a protrusion is extended outwardly from one corner of the CR foam, the outer edge of the protrusion is aligned with the outer side of the outermost battery membrane group in the battery pack case, the lead (13) of the low-cost heating plate (1) is butted against one end of the connecting section heating plate, and one end of the connecting section heating plate is aligned with the outer edge of the protrusion.

4. The low-cost heat patch for use in a power battery pack of claim 1, wherein the low-cost heat patch has a thickness of 3 mm.

5. The low-cost heating plate used in the power battery pack according to claim 1, wherein the heating plate (12) comprises a silica gel layer, a heating core and the silica gel layer from top to bottom in sequence.

6. The low-cost heating plate used in the power battery pack according to claim 1, wherein the ratio of the width of the corresponding segment heating plate to the cell width of the battery module is 0.4-0.55: 1.