| 摘要 |
PROBLEM TO BE SOLVED: To prevent heat generation of a voltage level equalizing circuit from adversely influencing a battery pack in equalizing voltage levels of unit cells constituting the battery pack. SOLUTION: This battery pack system is provided with the battery pack CB composed of a plurality of the unit cells SB; and a voltage level equalizing device 2 for equalizing the voltage levels of the unit cells SB by the voltage level equalizing circuit 21. A battery pack unit 1 for housing the battery pack CB, and the equalizing device 2 are composed as separate units. The unit 1 is equipped with: a voltage level detection means VS for detecting the voltage level of each unit cell SB; and an output means OM for outputting detection information of the detection means VS or control information based on the detection information. The equalizing device 2 is equipped with: a receiving means RM for receiving the detection information or the control information; and an equalization control device 22 for controlling the equalizing device 21 based on the detection information or the control information received by the receiving means RM. COPYRIGHT: (C)2004,JPO&NCIPI
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