Panel assemblies, including battery cell blocks, battery modules, and battery packs.

By using the protrusion and through-hole structure of the metal panel assembly in the battery cell, the problem of the battery cell expansion pressure not being absorbed is solved, achieving stable support and fireproof cooling effect for the battery cell.

JP7875977B2Active Publication Date: 2026-06-18LG ENERGY SOLUTION LTD
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Patent Information

Application Number
JP2024548644
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2022-10-18
Filing Date
2023-10-17
Publication Date
2026-06-18
Estimated Expiration
2043-10-17

AI Technical Summary

Technical Problem

The compression pads in the existing technology cannot effectively support and absorb the expansion pressure of the battery cell, which can cause the battery cell to be damaged when it expands and may cause a fire or explosion.

Method used

The panel assembly is made of metal sheet. By setting protrusions and through holes on the panel, the protrusions are elastically deformed under expansion pressure to absorb the expansion pressure of the battery cell, and the connection points are used to maintain the connection of the panel.

Benefits of technology

It effectively absorbs the expansion pressure of the battery cell, preventing damage to the battery cell, while providing a fire barrier in the event of a fire, delaying the spread of flames, and providing cooling channels through the gaps.

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Abstract

The panel assembly of the present invention is installed in a battery cell stack in which a plurality of battery cells are stacked, and is for absorbing swelling pressure of the battery cells, and includes a first panel having a first protrusion protruding in a thickness direction of the battery cells and connected to a lower end of the first protrusion to surround the first protrusion, and a second panel having a first through hole and disposed opposite the first panel, and facing inner sides of the first panel and the second panel are coupled to each other in a state in which the first protrusion is inserted into the first through hole such that an end of the first protrusion protrudes through the first through hole, and when an end of the first protrusion is pressed by swelling pressure of the battery cells, the panel assembly elastically deforms in a direction opposite to the protruding direction of the first protrusion to absorb the swelling pressure. The present invention also provides a battery cell block including the panel assembly, and a battery module including the battery cell block. The present invention also provides a battery pack including the battery module.
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Citation Information

Patent Citations

  • Electric terminal element

    JP2006012849A

  • Battery device and assembling method for the same

    JP2022070716A

  • Pressure module, in particular for lithium-ion battery cells

    JP2022531359A

  • Buffer member, electrical storage module, and method for manufacturing buffer member

    US20220294070A1

  • Buffer member and power storage module

    WO2021020326A1