Abstract: An energy storage system and a thermal management method therefor are provided. The method includes: loading a multi-agent reinforcement learning model pre-trained and optimized through a simulation environment; receiving state observation data at a current time instant; inputting the state observation data into the multi-agent reinforcement learning model for reinforcement learning and reasoning to output multi-control action information; and generating a control action information instruction based on the multi-control action information, transmitting the control action information instruction to a cooling system in the energy storage system, and performing by the cooling system, thermal management on the energy storage system in response to the control action information instruction.

Abstract: A method, apparatus, readable medium and electronic device of key-value matching, the method inputs the image to be detected into a predetermined key-value matching model, to cause the predetermined key-value matching model to output a matching relationship between the attribute data and the attribute value data, in this way, it can not only provide an end-to-end network model for key-value matching, effectively improve the efficiency of key-value matching, but also obtain the target attribute value data region and the target attribute data region of higher accuracy by the semantic segmentation submodel in the predetermined key-value matching model, and then determine the matching relationship between the attribute data and the attribute value data in the image to be detected based on the target attribute data region and the target attribute value data region by the image matching submodel, thereby effectively improving the accuracy of the key-value matching result.

Abstract: A die steel with a high thermal diffusion coefficient includes 0.30-0.40 wt. % of C, 0.05-0.10 wt. % of Si, 2.50-3.40 wt. % of Mo, 0.01-0.05 wt. % of Nb, 0.30-0.50 wt. % of Co, 0.01-0.05 wt. % of RE, the rest is Fe and unavoidable impurities, wherein in the die steel, P?0.15 wt. %, S?0.025 wt. %. A preparation method of the die steel includes steps of melting, electroslag remelting, electroslag ingot annealing, forging, spheroidizing annealing, quenching and tempering.

Abstract: An electrical energy storage system, a controller, and methods of using the same are provided. The system includes battery packs connected in parallel, one or more battery power management unit, one or more power converters, and a controller. The controller includes one or more processor and at least one tangible, non-transitory machine readable medium encoded with one or more programs configured to perform steps for discharging or charging. The steps include: reading data including state of health (SOH) and state of charge (SOC) from each battery pack, connecting a respective battery pack with a respective power converter; receiving a power command from an energy management system, calculating a respective power rate of each battery pack based on the data of SOH, SOC, and the power command, and discharging power from battery packs to a grid or charging power to battery packs based on the power rate of each battery pack.

Abstract: An electrical energy storage system, a controller, and methods of using the same are provided. The system includes battery packs connected in parallel, one or more battery power management unit, one or more power converters, and a controller. The controller includes one or more processor and at least one tangible, non-transitory machine readable medium encoded with one or more programs configured to perform steps for discharging or charging. The steps include: reading data including state of health (SOH) and state of charge (SOC) from each battery pack, connecting a respective battery pack with a respective power converter; receiving a power command from an energy management system, calculating a respective power rate of each battery pack based on the data of SOH, SOC, and the power command, and discharging power from battery packs to a grid or charging power to battery packs based on the power rate of each battery pack.