BATTERY PACK AND METHOD FOR CALCULATING ELECTRIC ENERGY OF BATTERY PACK

    公开(公告)号:US20180372803A1

    公开(公告)日:2018-12-27

    申请号:US16059185

    申请日:2018-08-09

    Inventor: Tadahiro YOSHIDA

    Abstract: A battery pack (10) includes a plurality of battery cells (100) which are connected in series to each other, a voltage and current measurement unit (voltage and current measurement unit (200)), a temperature measurement unit (temperature measurement unit (300)), and a calculation unit (calculation unit (420)) provided in an arithmetic operation communication unit (400). The calculation unit (420) calculates a “first electric energy balance” of the battery cells (100) on the basis of voltages and currents, determines internal resistances of the battery cells (100) on the basis of the temperatures, and calculates a “second electric energy balance” of the internal resistances on the basis of currents and the internal resistances. Thereby, the calculation unit (420) calculates an “accumulated electric energy balance” (electric energy E(t)) accumulated in the battery cells (100) on the basis of the first electric energy balance of the battery cells (100) and the second electric energy balance of the internal resistances.

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