CN-224232702-U - Cold plate, battery device and electric equipment

CN224232702UCN 224232702 UCN224232702 UCN 224232702UCN-224232702-U

Abstract

The application discloses a cold plate, a battery device and electric equipment. The battery unit is arranged in the box body, the cold plate is arranged in the box body and is configured to cool the battery unit, the cold plate comprises a plate main body and an anti-permeation layer, a cooling channel is arranged in the plate main body, and the anti-permeation layer is arranged in the plate main body and is configured to block permeation of cooling liquid in the cooling channel. The technical scheme of the application can improve the seepage-proofing performance of the cooling plate on the cooling liquid and reduce the possibility of short circuit and other accidents caused by insulation failure due to seepage of the cooling liquid.

Inventors

LIU LEI
XIE SHENGKAI
LIU YIFEI
PAN XIN

Assignees

宁德时代新能源科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250320

Claims (10)

1. A battery device, characterized by comprising: a case; A battery unit arranged in the box body, and A cold plate provided in the case and configured to cool the battery cell; The cold plate comprises a plate body and an anti-permeation layer, wherein a cooling channel is arranged in the plate body, and the anti-permeation layer is arranged in the plate body and is configured to block permeation of cooling liquid in the cooling channel.
2. The battery device of claim 1, wherein the permeation prevention layer is provided on an outer surface of the plate body.
3. The battery device of claim 2, wherein the outer surface of the plate body comprises: Two end surfaces which are arranged at intervals and are provided with a liquid passing port communicated with the cooling channel, and And the side peripheral surface is connected with the two end surfaces, part of the side peripheral surface is opposite to the battery cell, and the anti-permeation layer is arranged on the side peripheral surface.
4. The battery device of claim 3, wherein the permeation-preventing layer covers all of the side circumferential surfaces.
5. A battery device according to claim 3, wherein the plate body is provided with openings at both ends provided with both the end faces so as to be configured as the liquid passing opening.
6. The battery device of claim 5, wherein the cold plate further comprises a reinforcing plate disposed in the cooling passage and extending in the direction of arrangement of the two end faces to partition the cooling passage into at least two side-by-side sub-passages.
7. The battery device according to any one of claims 1 to 6, wherein the permeation-preventing layer is made of ethylene-vinyl alcohol copolymer, polypropylene, polyetherimide, polytetrafluoroethylene, or polyimide; and/or defining the thickness d of the permeation prevention layer, wherein d is more than or equal to 50 microns and less than or equal to 100 microns; and/or the cold plate further comprises an adhesive layer, wherein the adhesive layer is arranged between the plate main body and the permeation prevention layer.
8. A cold plate configured to cool a battery cell, the cold plate comprising: A plate body having cooling channels formed therein, and An permeation prevention layer is provided to the plate body and configured to block permeation of a cooling fluid located in the cooling channel.
9. The cold plate of claim 8, wherein the permeation resistant layer is made of ethylene-vinyl alcohol copolymer; and/or defining the thickness d of the permeation prevention layer, wherein d is more than or equal to 50 microns and less than or equal to 100 microns; And/or the cold plate further comprises an adhesive layer, wherein the adhesive layer is arranged between the plate main body and the permeation prevention layer; The outer surface of the plate main body comprises two end surfaces and a side circumferential surface, wherein the two end surfaces are arranged at intervals in an opposite mode, and the end surfaces are provided with liquid passing ports communicated with the cooling channels; And/or a reinforcing plate is arranged in the plate main body, and the reinforcing plate extends along the extending direction of the cooling channels so as to divide the cooling channels into at least two side-by-side sub-channels.
10. A powered device comprising a battery arrangement as claimed in any one of claims 1 to 7.

Description

Cold plate, battery device and electric equipment Technical Field The application relates to the technical field of batteries, in particular to a cold plate, a battery device and electric equipment. Background The battery device generates heat during operation, and therefore, a cold plate is usually disposed in the battery device to take away heat generated by the battery cells during operation. However, in the battery device of the related art, during the use process, a portion of the cooling liquid in the cold plate may permeate to the outside, resulting in insulation failure to cause accidents such as short circuit. Disclosure of utility model The application mainly aims to provide a battery device, which aims to improve the seepage-proofing performance of a cold plate on cooling liquid and reduce the possibility of accidents such as short circuit and the like caused by insulation failure due to seepage of the cooling liquid. In order to achieve the above object, the present application provides a battery device comprising: a case; a battery unit arranged in the box body, and The cold plate is arranged in the box body and is configured to cool the battery cells; The cold plate includes a plate body having a cooling channel disposed therein and an permeation resistant layer disposed in the plate body and configured to block permeation of a cooling fluid disposed in the cooling channel. According to the battery device provided by the technical scheme of the application, the cold plate is arranged to comprise the plate main body and the permeation prevention layer positioned on the plate main body, so that the permeation prevention layer can play a role in preventing the permeation of the cooling liquid in the cooling channel of the plate main body, the permeation prevention performance of the cold plate on the cooling liquid is improved, and the possibility of short circuit caused by insulation failure due to the permeation of the cooling liquid to the outer side of the cold plate is reduced. In some embodiments, the permeation protection layer is provided on an outer surface of the plate body. The anti-permeation layer is arranged on the outer side of the plate main body, so that convenience in arrangement of the anti-permeation layer is improved. In some embodiments, the outer surface of the plate body comprises: Two end surfaces which are arranged at intervals and are provided with a liquid passing port communicated with a cooling channel, and The side peripheral surface is connected with the two end surfaces, the part of the side peripheral surface is opposite to the battery cell, and the anti-permeation layer is arranged on the side peripheral surface. The liquid passing port is arranged on the end face, and the anti-seepage layer is arranged on the side peripheral face, so that the liquid passing port cannot influence the arrangement of the anti-seepage layer. In some embodiments, the permeation prevention layer covers all of the side circumferential surface. The anti-seepage layer is arranged to cover the whole side peripheral surface of the plate body of the plate, so that the anti-seepage effect of the cold plate can be improved, and meanwhile, the shape of the cold plate can be more regular, and further the convenience of processing and forming the cold plate can be improved. In some embodiments, the plate body is provided open at both ends provided with both end surfaces to configure as a liquid passing port. The plate main body is arranged in an open mode at two ends of the extending direction of the cooling channel, so that the structure of the plate main body is simple, and convenience in processing and forming of the plate main body is improved. In some embodiments, the cooling plate further comprises a reinforcing plate disposed within the cooling channel and extending in the direction of arrangement of the two end surfaces to separate the cooling channel into at least two side-by-side sub-channels. Simultaneously, the cooling channels can be divided and configured into at least two parallel sub-channels, so that cooling liquid is uniformly distributed at each position in the cooling channels, the heat dissipation area is increased, and the cooling effect on the battery cells is improved. In some embodiments, the permeation resistant layer is made of ethylene-vinyl alcohol copolymer; And/or defining the thickness d of the permeation prevention layer, wherein d is more than or equal to 50 mu m and less than or equal to 100 mu m; and/or the cold plate further comprises an adhesive layer, wherein the adhesive layer is arranged between the plate main body and the permeation prevention layer. The ethylene-vinyl alcohol copolymer is used for manufacturing the permeation prevention layer, so that the permeation prevention effect of cooling liquid in the cooling channel is improved, the range of the thickness d of the permeation prevention layer is set, the permeation prevention performance and the