Abstract
The present invention discloses a battery charge and discharge equipment, energy-saving module and its control method. The control method of the battery charge and discharge equipment is designed to synchronously charge and discharge multiple batteries. The control method comprises the following steps: (a) according to a charge/discharge process, the charge and discharge of multiple batteries are undertaken; (b) during the process of the charge and discharge of the battery, the needed power of charging the said battery is provided by converting the main battery energy to electrical energy. The present invention employs a DC-to-DC converter with a high efficiency to charge and discharge the battery by using the main battery as an energy buffer device. This can appropriately use the off-peak electricity and recycle the discharge energy of the said battery to achieve the purpose of testing and to enhance the effectiveness of energy saving and environmental protection.