| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a temperature regulator of a secondary battery with high use efficiency of energy as a whole device without need of an external power supply. <P>SOLUTION: The temperature regulator of a battery pack, where a pair of battery groups formed of single or a plurality of unit secondary batteries are connected in series includes a pair of NPN transistors which are set in a correspondence of one to one with respect to each battery group and are connected in series, an inductor arranged on a line connecting an intermediate connection point of the battery groups and an intermediate connection point of the NPN transistors, a backward diode which is connected to the NPN transistor in parallel, and in which a negative electrode is connected to a positive electrode of the battery group and an positive electrode is connected to a negative electrode of the battery group, a thermistor detecting a temperature of the unit secondary battery constituting the battery pack and a CPU regulating the battery temperature of the battery pack to be not less than a prescribed temperature by controlling opening/closing of the NPN transistor based on temperature information of the unit secondary battery and selectively charging/discharging the battery groups. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
