The purpose of the present invention is to limit a voltage rise caused by a charging current from a traveling motor, prevent battery deterioration caused by the voltage rise, and ensure sufficient safety. A battery pack is provided with: a rechargeable battery (1); a charging FET (3) having a parallel diode (7) connected in series with the battery (1); and a control circuit (2) that controls the charging FET (3) to turn on and off. The control circuit (2) is provided with: a determination circuit (5) that determines a bicycle installation state and a charger connection state; and a storage unit (6) that stores the full charge voltage of the battery (1). The control circuit (2) sets the charging FET (3) to an off state in a state where the determination circuit (5) detects a bicycle installation state, and sets the charging FET (3) to an off state in a state where the determination circuit (5) detects a charger connection state, detects that a battery voltage obtained by charging by the charger becomes higher than a full charge voltage, and sets the charging FET (3) to an off state in a state where the determination circuit (5) detects the charger connection state. The charging FET (3) is switched to an off state to terminate the charging of the battery (1).
限制来自行驶电动机的充电电流引起的电压的上升,防止起因于电压上升的电池的劣化,进而确保充分的安全性。电池组具备:电池(1),能够充电;充电FET(3),具有与电池(1)串联连接而成的并联二极管(7);以及控制电路(2),将充电FET(3)控制为接通断开。控制电路(2)具备:判别电路(5),判别自行车设置状态和充电器连接状态;以及存储部(6),存储电池(1)的满充电电压。控制电路(2)在判别电路(5)检测到自行车设置状态的状态下,将充电FET(3)设为断开状态,在判别电路(5)检测到充电器连接状态的状态下,检测通过充电器进行充电而得到的电池电压变得高于满充电电压的情况,将充电FET(3)切换为断开状态来结束电池(1)的充电。
Battery pack for electric bicycle and electric bicycle provided with same
电动自行车用的电池组和具备该电池组的电动自行车
2022-08-19
Patent
Electronic Resource
Chinese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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