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KR-20260065941-A - Batteries and electric devices

KR20260065941AKR 20260065941 AKR20260065941 AKR 20260065941AKR-20260065941-A

Abstract

A battery and an electric device are provided. The battery comprises: a plurality of battery cells (100), each having a first cross-section (111) at one end of each battery cell (100) along the height direction, and an electrode terminal (13) installed on the first cross-section; and a first thermal management component (310), each having a first cross-section (111) that is bonded to a first thermal management component (310) through a thermally conductive structural adhesive, and a first opening (311) that exposes each electrode terminal (13) is opened in the first thermal management component (310). A first cross section (111) of a battery cell (100) is bonded to a first thermal management component (310) using a thermally conductive structural adhesive, thereby connecting a plurality of battery cells (100) into a single integrated unit, which improves the overall structural strength of the battery and effectively resists expansion and deformation of the battery cells, thereby reducing the risk of failure due to expansion and deformation of the battery cells and making the temperature environment of the battery cells more stable, and also effectively saves height space in the battery and is advantageous for improving the energy density and volume utilization rate of the battery.

Inventors

  • 왕, 펭
  • 위안, 셩강
  • 왕, 젱종
  • 지아, 준
  • 니우, 지엔신

Assignees

  • 컨템포러리 엠퍼렉스 테크놀로지 씨오., 리미티드

Dates

Publication Date
20260511
Application Date
20240103

Claims (20)

  1. As a battery, this is: A plurality of battery cells, wherein one end of each battery cell along the height direction is provided with a first cross-section, and an electrode terminal is installed on the first cross-section; A battery characterized by including a first thermal management component, wherein each of the above-mentioned first cross-sections is bonded and fixed to the first thermal management component through a thermally conductive structural adhesive, and the first thermal management component has a first opening that exposes each of the above-mentioned electrode terminals.
  2. In paragraph 1, the battery also: It includes an adhesive blocking structure installed to surround the edge of each of the first cross-sections; A battery characterized in that the adhesive barrier structure is installed between the battery cell and the first thermal management component.
  3. A battery according to paragraph 2, wherein the adhesive blocking structure is also installed to surround each of the first openings.
  4. A battery according to claim 2 or 3, wherein a pressure reducing mechanism is installed in the first cross section, an exhaust mechanism is installed in the first thermal management component opposite to each of the pressure reducing mechanisms, and the adhesive blocking structure is installed to surround each of the exhaust mechanisms.
  5. A battery according to claim 4, wherein the exhaust mechanism is a second opening installed in the first thermal management component, and an insulating layer is installed on the inner wall of the second opening.
  6. A battery according to any one of claims 2 to 5, wherein the adhesive blocking structure comprises the first thermal management component and/or a rib installed on the first cross section.
  7. A battery characterized in that, in any one of claims 1 to 6, an insulating layer is installed on the opposing sides of the first thermal management component and on the inner wall of the first opening.
  8. A battery according to any one of claims 1 to 7, wherein the battery also comprises a case, the battery cell and the first thermal management component are mounted in the case, the case is equipped with a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is in communication with one end of a flow path of the first thermal management component, and the liquid outlet pipe is in communication with the other end of a flow path of the first thermal management component.
  9. A battery according to claim 8, wherein a second cross-section is provided at the other end of the battery cell along the height direction, and the second cross-section is adhesively connected to the case.
  10. In claim 9, the second cross section is fixedly connected to the case through a structural adhesive, and the battery is also: A battery characterized by including an adhesive-preventing structure installed to surround the edge of each of the second cross sections and used to block structural adhesive in the second cross section from flowing between adjacent battery cells.
  11. A battery characterized in that, in any one of claims 8 to 9, a second thermal management component is installed in the case, and each of the second cross-sections is connected to the second thermal management component.
  12. A battery according to claim 11, characterized in that each of the above-mentioned second cross-sections and the above-mentioned second thermal management components are bonded and fixed through a thermally conductive structural adhesive.
  13. A battery according to claim 11 or 12, wherein the liquid inlet pipe is also in communication with one end of the flow path of the second thermal management component, and the liquid outlet pipe is also in communication with the other end of the flow path of the second thermal management component.
  14. A battery according to any one of claims 8 to 13, wherein the first thermal management component includes a first extension, the first extension extends from one end in the height direction of the case to the outside of the case, and the liquid inlet pipe and the liquid outlet pipe are mounted on the first extension.
  15. A battery according to claim 14, wherein the case includes a sealing plate located at its height-direction end, the sealing plate is located at one end of the case near the first extension, the sealing plate has a second extension extending outwardly, and the first extension is sealedly connected to the second extension.
  16. A battery according to claim 14 or 15, characterized in that the first extension part and the first thermal management part are an integrated structure.
  17. A battery according to any one of claims 8 to 16, wherein a plurality of the battery cells are arranged in an array layout, and the thermal management component includes a third thermal management component used to be suitably placed between two adjacent columns or two adjacent rows of the battery cells, wherein the battery cells include a plurality of surfaces, and the third thermal management component is heat exchange connected to the surface having the largest area among the plurality of surfaces.
  18. In Paragraph 17, The third thermal management component is installed between the battery cells of any two adjacent columns or any two adjacent rows; Alternatively, the third thermal management component is installed on one side of the battery cell in each column, and the battery cells in two columns are spaced apart between two adjacent third thermal management components; Alternatively, a battery characterized in that a third thermal management component is installed on one side of the battery cell of each row, and the battery cells of two rows are spaced apart between two adjacent third thermal management components.
  19. A battery according to claim 17 or 18, wherein the battery also comprises a distribution pipe connecting one end of the flow path of each third thermal management component and a return pipe connecting the other end of the flow path of each third thermal management component, wherein the liquid inlet pipe is in communication with the distribution pipe and the liquid outlet pipe is in communication with the return pipe.
  20. A battery characterized in that, in any one of claims 17 to 19, the distribution pipe and the recirculation pipe are located at the same end of the third thermal management component.

Description

Batteries and electric devices This application relates to the field of battery technology, and more specifically to batteries and electric devices. Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles are establishing themselves as a crucial component of this development thanks to their advantages in energy saving and environmental protection. In the case of electric vehicles, battery technology is a factor that significantly influences their advancement. However, since battery cells undergo expansion and deformation during charging and discharging, leading to failure, effectively resisting this expansion and deformation is a problem that must be solved in battery production. The purpose of the embodiments of the present application is to provide a battery and an electric device for solving the problem of how to resist expansion and deformation of a battery cell in the related technology. In a first aspect, an embodiment of the present application provides a battery, which: A plurality of battery cells, wherein one end of each battery cell along the height direction is provided with a first cross-section, and an electrode terminal is installed on the first cross-section; Each first cross section is bonded to a first thermal management component through a thermally conductive structural adhesive, and the first thermal management component includes a first thermal management component having a first opening that exposes each electrode terminal. In the technical solution of the embodiment of the present application, a first cross-section of a battery cell is bonded and fixed to a first thermal management component through a thermally conductive structural adhesive, thereby fixing the first cross-section of the battery cell through the first thermal management component and connecting a plurality of battery cells into a single integrated body, thereby improving the overall structural strength of the battery and effectively resisting expansion and deformation of the battery cell, and reducing the risk of failure caused by expansion and deformation of the battery cell; the battery cell can be heated or cooled through the first thermal management component to make the temperature environment of the battery cell more stable; and by bonding and fixing the first thermal management component to the first cross-section, it is advantageous to effectively save height space in the battery and improve the energy density and volumetric utilization rate of the battery. In some embodiments, the battery also: It includes an adhesive barrier structure installed to surround the edges of each first cross section; An adhesive barrier structure is installed between the battery cell and the first thermal management component. By installing an adhesive blocking structure and ensuring that the adhesive blocking structure surrounds the edges of each first cross section, the thermal conductive structural adhesive is prevented from overflowing to the sides of the battery cell, thereby reducing the risk of affecting the normal charge/discharge expansion and deformation of the battery cell and reducing the battery cell's lifespan due to the presence of cured thermal conductive structural adhesive between adjacent battery cells. In some embodiments, the adhesive blocking structure is also installed to surround each first opening. By having an adhesive blocking structure surround each first opening, the adhesive for the thermally conductive structure is prevented from overflowing into the first opening, thereby reducing the impact on the connection between the electrode terminal and the busbar member caused by the adhesive for the thermally conductive structure overflowing into the first opening. In some embodiments, a pressure reducing mechanism is installed in the first cross-section, and an exhaust mechanism is installed in the first thermal management component, each facing the pressure reducing mechanism, and an adhesive blocking structure is installed to surround each exhaust mechanism. A pressure relief mechanism is installed in the first section to release the internal pressure of the battery cell when the battery cell expands, thereby protecting the battery cell; a second opening is installed in the first thermal management component to allow the pressure relief mechanism to perform pressure relief; and an adhesive blocking structure surrounds the exhaust mechanism to prevent the adhesive for the thermally conductive structure from overflowing into the exhaust mechanism, thereby reducing the risk of the pressure relief mechanism opening the pressure relief. In some embodiments, the exhaust mechanism is a second opening installed in the first thermal management component, and an insulating layer is installed on the inner wall of the second opening. The second opening is used as an exhaust mechanism, and the structure is simple; by installing an insulating