Abstract: Embodiments of the present invention disclose a battery switch on circuit and a lithium battery. The circuit includes a communication control module, a relay, a communication control circuit, a switch, and a communication connection terminal. A communication signal terminal of the communication control module is connected to a first contact of the relay, a common contact of the relay is connected to the communication connection terminal. A coil of the relay is powered on to control the common contact and the first contact to be gated and is powered down to control the common contact and a second contact of the relay to be gated. The communication connection terminal is configured to connect to an upper computer. The switch includes a first terminal, a second terminal, and a control terminal. A signal from the control terminal of the switch is capable of controlling conduction or disconnection between the first terminal and the second terminal.

Abstract: Provided are a stacked battery pack and a battery cabinet, relating to the technical field of batteries. In the stacked battery pack, fixed supports are arranged on the edges of the bottom of a battery pack body, and fixed handles are arranged on the edges of the top of the battery pack body, each fixed handle protruding outwards and being arranged corresponding to an adjacent fixed support and detachably connected thereto, so that two adjacent battery pack bodies are fixedly stacked.

Abstract: A method and a device for master-slave cooperative capacity expansion of a mobile battery are provided. The method for master-slave cooperative capacity expansion of the mobile battery comprises determining whether the voltage of the connected external power device is in a pre-set voltage threshold range; determining, if the voltage is higher than the master voltage of the battery master, the external power device as the battery slave; turning on, if the voltage difference between the voltage and the master voltage is smaller than a pre-set voltage difference threshold, the discharge circuit between the battery slave and the battery master; and controlling the discharge circuit to discharge the battery slave based on the discharge current of the discharge circuit as well as the pre-set first and second current thresholds.

Abstract: Provided is a modular energy storage battery, including a battery module, a fixing frame, an electrical integration module, and a panel, wherein the fixing frame is detachably arranged at one end of the battery module; the electrical integration module is detachably embedded in the fixing frame; and the panel is detachably arranged on the electrical integration module.

Abstract: The present disclosure provides a heat dissipation device of an energy storage system and a heat dissipation method for an energy storage system, wherein the heat dissipation device comprises: a housing, wherein at least one frame is provided in the housing, the energy storage system is placed in the at least one frame, a curved-surface guide plate is provided on the top of the at least one frame, at least one air conditioner is hung outside the housing, a cold air outlet of each air conditioner is connected to the curved-surface guide plate; a guide cavity is formed between a concave surface of the curved-surface guide plate and the at least one frame, a spreader plate is provided in the guide cavity, and the spreader plate is configured to adjust a flow direction of gas in the guide cavity.