To suppress progress of high-rate deterioration of a battery cell during a continuous charge and discharge of a large current.SOLUTION: A battery unit 110 comprises: a battery module 60 in which a plurality of battery cells 62 and a plurality of plates 63 are alternately overlapped and bound in an overlapping direction; and a binding load variable mechanism 80 that changes a binding load applied to each battery cell 62. Each plate 63 includes a contact part 63a and a concave part 91 on a face directed to each battery cell. By increasing the binding load applied to each battery cell at a charge and discharge of a large current, a strong pressure force is applied to the battery cell 62 from the contact part 63a. Thus, the movement of an electrolyte at a portion corresponding to the concave part 91 in the battery cell 62 is suppressed.SELECTED DRAWING: Figure 2
【課題】大電流充放電継続中の電池セルのハイレート劣化の進行を抑制する【解決手段】電池ユニット110は、複数の電池セル62と複数のプレート63が交互に重ねられてその重なり方向に拘束された電池モジュール60と、各電池セル62に加わる拘束荷重を変える拘束荷重可変機構80とを備え、プレート63は電池セルを向いた面に当接部63aと凹部91を有し、大電流充放電時に電池セルに加わる拘束荷重を大きくして、当接部63aから電池セル62に強い押圧力を加え、そのことによって、電池セル62における凹部91に対応する部位の電解液の移動を抑制する。【選択図】図2
VEHICLE BATTERY UNIT CONTROL APPARATUS
車両用電池ユニット制御装置
31.01.2023
Patent
Elektronische Ressource
Japanisch
IPC: | H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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