| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To maintain a recommended utilization temperature (set temperature) at charging, by effectively utilizing electric power discharged in a discharge circuit for keeping warmth of a secondary battery. <P>SOLUTION: This is a method for keeping the warmth of the secondary battery, wherein the secondary battery 1 is charged in the case it is within a range of the set temperature in which cells are connected in series, in which a discharge electric current is made to flow from the cell with respect to a discharge element 12 connected, in parallel with the cell at every time both end voltages of the cells which are elevated according to making the charge, where the voltages of all the cells are made to approach to the fully charged voltage. A Peltier element is used for the discharge element as a heating and cooling means of the secondary battery; when the temperature of the secondary battery is higher than the target temperature within the range of the set temperature, the secondary battery is cooled, by making a current flow to have the Peltier element act as the cooling means of the secondary battery; and when the temperature of the secondary battery is lower than the target temperature, the secondary battery is heated, by making the current flow to have the Peltier element act as a heating means for the secondary battery. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
