Battery pack for electric bicycle and electric bicycle equipped with battery pack

A battery pack for an electric bicycle, the battery pack comprising:

• a battery which is rechargeable;
• a charge FET including a parallel diode connected in series with the battery;
• and
• a control circuit configured to turning on and off of controlling, the charge FET, wherein
• the control circuit includes:
• a discriminating, circuit configured to detect a bicycle-mounted state and a charger-connected state;
• and
• a memory configured to store a full charge voltage of the battery and a threshold voltage lower than the full charge voltage, and
• the control circuit is configured, while the discriminating circuit detects the bicycle-mounted state, to:
• turn off the charge FET while a voltage of the battery is higher than the threshold voltage;
• and
• turn on the charge FET while the voltage of the battery is lower than the threshold voltage, and
• the control circuit is configured, while the discriminating circuit detects the charger-connected state, to stop charging the battery by switching the charge FET to turn off the charge FET upon detecting that the voltage of the battery charged by a charger becomes higher than the full charge voltage.

A battery pack for an electric bicycle, the battery pack comprising:

• a battery which is rechargeable;
• a charge FET including a parallel diode connected in series with the battery;
• and
• a control circuit configured to control turning on and off of the charge FET, wherein
• the control circuit includes:
• a discriminating circuit configured to detect a bicycle-mounted state and a charger-connected state;
• and
• a memory configured to store a full charge voltage of the battery and a threshold current of a load current;
• and
• the control circuit is configured, while the discriminating circuit detects the bicycle-mounted state, to:
• turn off the charge FET when the load current is smaller than the threshold current;
• and
• turn on the charge FET when the load current is larger than the threshold current, and
• the control circuit is configured, while the discriminating circuit detects the charger-connected state, to stop charging the battery by switching the charge FET to turn off the charge FET upon detecting that the voltage of the battery charged by a charger is higher than the full charge voltage.