Abstract: This application discloses a state of health (SOH) detection method and apparatus, and an energy storage system. A main controller in the method can adjust an output power of a power generation module based on an allowable charge or discharge power of a battery pack, so as to cause the output power of the power generation module to charge or discharge the battery pack while satisfying a required system power. This enables the battery pack to complete a full charging or discharging process, so as to obtain a currently available capacity of the battery pack accurately and implement precise calculation of the SOH.

Abstract: A regulating method of a regulating circuit for a battery includes: determining whether to regulate the battery; and at least controlling, in response to determining to regulate the battery, multiple switching devices of a bridge arm set to form a current loop with a first current direction or a current loop with a second current direction between the battery and a power module, where the first current direction and the second current direction are opposite at the battery.

Abstract: A battery charging control method applicable to a vehicle electrical system that includes a current control unit including a semiconductor device. Two ends of the current control unit are connected to a battery and a charging power supply, respectively. The method includes controlling, when a temperature of the battery is below a preset temperature, the current control unit to be in a first state in which the semiconductor device is reversely connected in a circuit, sending a first charging request including a first charging current required to heat the battery to the preset temperature, controlling, when the temperature of the battery reaches the preset temperature, the current control unit to be in a second state in which the semiconductor device is disconnected from the circuit or forwardly connected in the circuit, and sending a second charging request including a second charging current at which the battery is charged.

Abstract: This application provides an energy storage system control method, a control apparatus, and an energy storage system. The energy storage system is coupled to an energy generation system and includes a plurality of energy storage units. The energy storage system control method includes: controlling, in a first stage, the energy generation system to charge a first energy storage unit in the plurality of energy storage units, where the first stage is a charging stage in a charging cycle of the first energy storage unit; and controlling, in a second stage, the first energy storage unit to discharge electricity to a second energy storage unit in the plurality of energy storage units, where the second stage is a discharging stage in the charging cycle of the first energy storage unit.

Abstract: A regulation circuit may include: a battery side, configured to be connected to the battery; a bus side, configured to be connected to an external power supply; a power module, configured to regulate a voltage and connected between the battery side and the bus side; and a control switch group. The control switch group includes: a first control switch, connected between the bus side and the power module; a second control switch, connected between the first control switch and the battery side; and a third control switch, connected between the power module and the battery side.

Abstract: A control method or device for performing the method is described. A first battery in the battery heating system needs to be heated. The first battery is controlled to conduct charging and discharging to heat the first battery, where the first battery is discharged to a second battery in the battery heating system so that the first battery is heated by heat generated during the process of discharging the first battery to the second battery and charging the first battery, thereby saving energy for battery heating and reducing the battery heating cost.

Abstract: A battery charging control method applicable to a vehicle electrical system that includes a current control unit including a semiconductor device. Two ends of the current control unit are connected to a battery and a charging power supply, respectively. The method includes controlling, when a temperature of the battery is below a preset temperature, the current control unit to be in a first state in which the semiconductor device is reversely connected in a circuit, sending a first charging request including a first charging current required to heat the battery to the preset temperature, controlling, when the temperature of the battery reaches the preset temperature, the current control unit to be in a second state in which the semiconductor device is disconnected from the circuit or forwardly connected in the circuit, and sending a second charging request including a second charging current at which the battery is charged.

Abstract: The embodiments of the present application provide a method for charging a battery, a battery management system, and a charge and discharge device. The method for charging the battery includes: acquiring, by a BMS, a first charge current and sending it to a charge and discharge device, thus making the charge and discharge device charge the battery based on the first charge current; if a first accumulated charge quantity of the battery is greater than or equal to a first accumulated charge quantity threshold value, acquiring, by the BMS, a first discharge current and sending it to the charge and discharge device, thus making the charge and discharge device control the battery to discharge based on the first discharge current; and if a first accumulated discharge quantity of the battery is greater than or equal to a first accumulated discharge quantity threshold value.

Abstract: Embodiments of the present application provide a charging and discharging apparatus and a battery charging method, which are capable of ensuring security performance of a battery. The apparatus comprises a bi-directional DC/DC converter and a control unit, wherein the control unit is configured to: receive a first charging current transmitted by a battery management system (BMS) of a battery, control the bi-directional DC/DC converter based on the first charging current to charge the battery through an energy storage battery; receive a first discharging current transmitted by the BMS and control the bi-directional DC/DC converter based on the first discharging current to discharge a battery capacity of the battery to the energy storage battery; and receive a second charging current transmitted by the BMS and control the bi-directional DC/DC converter based on the second charging current to charge the battery through the energy storage battery.