BATTERY MODULE

PROBLEM TO BE SOLVED: To provide a battery module capable of suitably suppressing both of a Li precipitation and battery resistance increase.SOLUTION: A battery module 100 disclosed in the specification, comprises a battery pack and a control part. An electric cell 30 of a unit cell 20 composing the...

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Bibliographische Detailangaben
1. Verfasser: KUZUHA MITSUHIRO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a battery module capable of suitably suppressing both of a Li precipitation and battery resistance increase.SOLUTION: A battery module 100 disclosed in the specification, comprises a battery pack and a control part. An electric cell 30 of a unit cell 20 composing the battery pack, includes a core part 30A in which a positive electrode mixture layer and a negative electrode mixture layer are opposite. In a gap of arranged unit cell 20, a press member 40 applying a binding load to the electric cell 30 is arranged. The press member 40 comprises: a central compression part 44a that applies the binding load to a central part of a width direction W of the core part 30A; and a side edge compression part 44b that applies the binding load to both edge part of the core part 30A. A control part of the battery module 100 disclosed in the specification, comprises load control means of expanding the central compression part 44a when charging a battery pack 10, and retracting the central compression part 44a when discharging.SELECTED DRAWING: Figure 4 【課題】Li析出と電池抵抗上昇の両方を好適に抑制することができる電池モジュールを提供する。【解決手段】ここで開示される電池モジュール100は、組電池と制御部とを備えており、当該組電池を構成する単電池20の電極体30は正極合材層と負極合材層とが対向したコア部30Aを有している。そして、配列された単電池20の間隙には電極体30に拘束荷重を加える押圧部材40が配置されており、押圧部材40は、コア部30Aの幅方向Wの中央部に拘束荷重を加える中央加圧部44aと、コア部30Aの両側縁部に拘束荷重を加える側縁加圧部44bとを備えている。そして、ここで開示される電池モジュール100の制御部は、組電池10を充電する際に中央加圧部44aを膨張させ、放電する際に中央加圧部44aを収縮させる荷重制御手段を備えている。【選択図】図4