Abstract: A charging pile, a power module, and a method for controlling the same. In response to receiving a signal of operation, samples of an input voltage of three relays corresponding to three phases, respectively, at an input of a power module are acquired to determine whether a line voltage between inputs of two of the three relays is within a predetermined voltage range. The two relays are closed to pre-charge a bus capacitor in a converting circuitry of the power module, in response to determining that the line voltage is within the predetermined voltage range. The predetermined voltage range comprises zero voltage, such that each relay can be closed when a voltage at its input is close to zero. An impulse current is decreased without help of an arc quenching device, thereby saving an internal space of the charging pile.

Abstract: A method and a device for acquiring a charging electricity amount, and an electronic device are provided. When a controller determines based on at least operation state information of an external electric meter that the external electric meter is in a fault state, the first amount of electricity, outputted by the charging pile when the external electric meter is in the fault state, can be calculated based on at least first electric energy output data of the charging pile acquired by the charging module of the charging pile when the external electric meter is in the fault state. That is, the amount of electricity consumed by the charging pile can be calculated even when the external electric meter is in the fault state, so that the controller calculates the cost based on the amount of electricity consumed by the charging pile.

Abstract: A method and a device for acquiring a charging electricity amount, and an electronic device are provided. When a controller determines based on at least operation state information of an external electric meter that the external electric meter is in a fault state, the first amount of electricity, outputted by the charging pile when the external electric meter is in the fault state, can be calculated based on at least first electric energy output data of the charging pile acquired by the charging module of the charging pile when the external electric meter is in the fault state. That is, the amount of electricity consumed by the charging pile can be calculated even when the external electric meter is in the fault state, so that the controller to calculates the cost based on the amount of electricity consumed by the charging pile.

Abstract: An energy storage system and a control method thereof in the field of energy storage are provided. The system includes: an energy storage battery, a first bidirectional DC/DC circuit, a DC bus, a DC/AC circuit, a first controllable switch, and a second controllable switch. The energy storage battery is connected to a device side of the first bidirectional DC/DC circuit via the first controllable switch; a bus side of the first bidirectional DC/DC circuit is connected to the DC bus; the DC bus is connected to a public power grid via the DC/AC circuit; the second controllable switch has a first end connected to a chargeable vehicle, and a second end connected to the device side of the first bidirectional DC/DC circuit; and at most one of the first controllable switch and the second controllable switch is in a closed state at the same time.