| 摘要 |
PURPOSE:To stabilize battery performance when batteries are connected in series by connecting a diode in parallel for stabilizing voltage to each battery connected in series. CONSTITUTION:A plurality of rechargeable batteries B having lithium as negative active material are connected in series, and a diode D such as Zener diode or light emitting diode is connected in parallel to each battery for stabilizing voltage. Even when voltage is concentrated on one battery by some accidents, current corresponding to excessive voltage branches to the diode and overcharge is prevented. At the same time, an action to charge battery is applied to other battery and both batteries are charged all together. Therefore, charging characteristics of each battery are stabilized and life of batteries are increased. |
