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CN-224217554-U - Battery pack and electric equipment

CN224217554UCN 224217554 UCN224217554 UCN 224217554UCN-224217554-U

Abstract

The application discloses a battery pack and electric equipment, which belong to the technical field of batteries, wherein the battery pack comprises a battery core and a heat exchange assembly, the heat exchange assembly comprises a heat exchange plate, a heating piece and an elastic piece, the heat exchange plate is provided with a first surface and a second surface which are arranged in a deviating way, the battery core is arranged on the first surface and is in heat conduction connection with the heat exchange plate, a cooling cavity is arranged in the heat exchange plate, the cooling cavity is used for circulating cooling liquid to cool the battery core, the heating piece is embedded in the heat exchange plate, the heating piece is mutually separated from the cooling cavity and is used for heating the battery core, and the elastic piece is arranged on the second surface and is connected with the heat exchange plate, and corresponds to the position on the heating piece. The application reduces the occupied space of the battery pack by embedding the heating element in the heat exchange plate, and improves the safety of the battery pack by arranging the elastic element on the heat exchange plate at the position corresponding to the heating element so as to play a role of buffering when the battery pack is subjected to the action of external force, so as to protect the heating element.

Inventors

  • ZHOU WEIGUANG
  • ZHAO JIYANG
  • CUI YONGDONG
  • WEI RUIHONG
  • DU ZHIYONG

Assignees

  • 欣旺达动力科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250516

Claims (10)

  1. 1. The battery pack is characterized by comprising an electric core and a heat exchange assembly, wherein the heat exchange assembly comprises a heat exchange plate (10), a heating element (20) and an elastic element (30); the heat exchange plate (10) is provided with a first direction (X) and a second direction (Y) which are intersected, the heat exchange plate (10) is provided with a first surface (131) and a second surface (141) which are arranged away from each other, the battery cell is arranged on the first surface (131) and is in heat conduction connection with the heat exchange plate (10), a cooling cavity (110) is arranged in the heat exchange plate (10), the cooling cavity (110) is used for circulating cooling liquid to cool the battery cell, the heating element (20) is embedded in the heat exchange plate (10), and the heating element (20) and the cooling cavity (110) are mutually separated and are used for heating the battery cell; The elastic piece (30) is arranged on the second surface (141) and is connected with the heat exchange plate (10), and the elastic piece (30) corresponds to the heating piece (20).
  2. 2. The battery pack according to claim 1, wherein the heat exchange plate (10) includes a first plate body (13) and a second plate body (14) that are stacked; A first groove (142) and a second groove (143) are formed in one side, facing the first plate body (13), of the second plate body (14), the first groove (142) and the second groove (143) are separated from each other, the first plate body (13) and the first groove (142) are enclosed to form the cooling cavity (110), the first plate body (13) and the second groove (143) are enclosed to form the heating cavity (120), and the heating piece (20) is arranged in the heating cavity (120); The first surface (131) is one side of the first plate body (13) deviating from the second plate body (14), and the second surface (141) is one side of the second plate body (14) deviating from the first plate body (13).
  3. 3. The battery pack according to claim 2, wherein the first groove (142) includes a plurality of first sub-grooves (1421) arranged at intervals along the first direction (X) and a connection groove (1422) provided between adjacent two of the first sub-grooves (1421), the first sub-grooves (1421) extending along the second direction (Y), the connection groove (1422) communicating with adjacent two of the first sub-grooves (1421).
  4. 4. A battery pack according to claim 3, wherein a plurality of second grooves (143) are provided, the plurality of second grooves (143) being arranged at intervals along the first direction (X), each second groove (143) being provided between two adjacent first sub-grooves (1421), and at most one second groove (143) being provided between each two adjacent first sub-grooves (1421).
  5. 5. The battery pack according to any one of claims 1 to 4, wherein the elastic member (30) includes a main body portion (31) and a connection portion (32) connected to at least one end of the main body portion (31) in the first direction (X), the main body portion (31) is provided on the second face (141), and an orthographic projection of the main body portion (31) on the second face (141) coincides at least partially with an orthographic projection of the heating member (20) on the second face (141), and the connection portion (32) is connected to the heat exchange plate (10).
  6. 6. The battery pack according to claim 5, wherein a width of the main body portion (31) in the first direction (X) is greater than or equal to a width of the heating member (20) in the first direction (X).
  7. 7. The battery pack according to any one of claims 1 to 4, wherein a plurality of the elastic members (30) are provided, the plurality of elastic members (30) are arranged at intervals along the length extension direction of the heating member (20), and each elastic member (30) is connected with the heat exchange plate (10).
  8. 8. The battery pack according to any one of claims 1-4, wherein the heat exchange assembly further comprises a heat conductive adhesive layer (40), the heat conductive adhesive layer (40) being provided between the heating member (20) and the heat exchange plate (10), the heat conductive adhesive layer (40) being used for connecting the heating member (20) and the heat exchange plate (10).
  9. 9. The battery pack according to claim 1, wherein the heating member (20) is a PTC heater.
  10. 10. A powered device comprising a battery pack as claimed in any one of claims 1-9.

Description

Battery pack and electric equipment Technical Field The application belongs to the technical field of batteries, and particularly relates to a battery pack and electric equipment. Background The temperature of the power battery in the running process is very important to the service performance of the power battery, and the service life and the safety of the power battery can be influenced by the too high temperature or the too low temperature. In the related art, the power battery pack comprises an electric core, a liquid cooling plate and a heater, wherein the liquid cooling plate is used for radiating heat for the electric core group, and the heater is used for heating the electric core so as to keep the working temperature of the electric core within a normal temperature range. However, the heater occupies a larger space in the related art, and because the heater is an electronic element, the heater is easy to be damaged due to external force such as impact or collision in the working process of the battery pack, and the safety performance of the power battery pack is affected. Disclosure of utility model The application aims to provide a battery pack and electric equipment, which can solve the problems that a heater of a power battery pack in the related art occupies a larger space and is easy to damage due to impact or collision external force. In order to solve the technical problems, the application is realized as follows: According to the embodiment of the application, a battery pack is provided, the battery pack comprises a battery cell and a heat exchange assembly, the heat exchange assembly comprises a heat exchange plate, a heating piece and an elastic piece, the heat exchange plate is provided with a first direction and a second direction which are intersected, the heat exchange plate is provided with a first surface and a second surface which are arranged in a deviating mode, the battery cell is arranged on the first surface and is in heat conduction connection with the heat exchange plate, a cooling cavity is arranged in the heat exchange plate and is used for circulating cooling liquid to cool the battery cell, the heating piece is embedded in the heat exchange plate, the heating piece and the cooling cavity are mutually separated and are used for heating the battery cell, the elastic piece is arranged on the second surface and is connected with the heat exchange plate, and the elastic piece corresponds to the position of the heating piece. The heat exchange plate comprises a first plate body and a second plate body which are arranged in a stacked mode, wherein a first groove and a second groove are formed in one side, facing the first plate body, of the second plate body, the first groove and the second groove are mutually separated, the first plate body and the first groove are enclosed to form a cooling cavity, the first plate body and the second groove are enclosed to form a heating cavity, the heating piece is arranged in the heating cavity, the first surface is one side, facing away from the second plate body, of the first plate body, and the second surface is one side, facing away from the first plate body, of the second plate body. Optionally, the first grooves include a plurality of first sub-grooves arranged at intervals along the first direction and a connecting groove arranged between two adjacent first sub-grooves, the first sub-grooves extend along the second direction, and the connecting groove is communicated with two adjacent first sub-grooves. Optionally, the second grooves are provided with a plurality of second grooves, the plurality of second grooves are arranged at intervals along the first direction, each second groove is arranged between two adjacent first sub-grooves, and at most one second groove is arranged between two adjacent first sub-grooves. Optionally, the elastic piece comprises a main body part and a connecting part connected to at least one end of the main body part along the first direction, wherein the main body part is arranged on the second surface, the orthographic projection of the main body part on the second surface is at least partially overlapped with the orthographic projection of the heating piece on the second surface, and the connecting part is connected with the heat exchange plate. Optionally, a width of the main body portion along the first direction is greater than or equal to a width of the heating element along the first direction. Optionally, the elastic component is equipped with a plurality ofly, and a plurality of the elastic component is followed the length extension direction interval arrangement of heating element, every the elastic component all with the heat exchanger plate is connected. Optionally, the heat exchange assembly further comprises a heat conducting adhesive layer, wherein the heat conducting adhesive layer is arranged between the heating element and the heat exchange plate, and the heat conducting adhesive layer i