Thermal management device for energy storage system, method for controlling the thermal management device for energy storage system, and energy storage system

A thermal management device for energy storage system, comprising a heat dissipation system, a temperature transducer, a data acquisition module, a management module and a data interaction module;

• wherein the heat dissipation system comprises refrigerant circulating heat exchange components for heat dissipation of energy storage system, and the refrigerant circulating heat exchange components perform heat exchange through phase change of refrigerant;
• wherein the refrigerant circulating heat exchange components comprise a heat exchanger, a fan, a refrigerant pipeline, a radiator, a radiator fan, a regulating pump and a refrigerant storage tank;
• wherein the heat exchanger and the radiator are connected through a refrigerant pipeline to form a refrigerant circulating channel, with the radiator installed above the heat exchanger;
• wherein the heat exchanger and the fan are installed at the thermovent of energy storage system, wherein the fan is configured to make the air pass through the heat exchanger for heat exchange;
• wherein the radiator and the radiator fan are installed in the external environment, wherein the radiator fan is used for making the outside air pass through the radiator for heat dissipation;
• wherein the regulating pump and the refrigerant storage tank are connected with the refrigerant pipeline, and the inlet and outlet of the regulating pump are provided with reversing pipelines for pumping refrigerant into or out of the refrigerant pipeline, so as to regulate the refrigerant quantity in the refrigerant circulating channel;
• wherein the fan, the radiator fan and the regulating pump are all electrically connected with the management module;
• wherein the data acquisition module is connected with the temperature transducer, and is configured to acquire the external environment temperature and the working environment temperature of energy storage system;
• wherein the management module is configured to conduct heating value analysis of energy storage system, and then performing heat dissipation control and management according to the heating value analysis and the external environment temperature;
• the management module comprises a memory and an arithmetic logic unit, and the data acquisition module is connected with a barometer, and the barometer is configured to measure an ambient pressure value;
• the memory is configured to store a curve of an air volume and a rotating speed of the radiator fan or a comparison of the air volume and the rotating speed of the radiator fan;
• wherein the arithmetic logic unit adopts a following formula to calculate an air supply volume at a state point for operation of the radiator fan:
• Q
• w
• ⁢
• i
• ⁢
• n
• ⁢
• d
• =
• P
• standard
• ⁢
• q
• power
• (
• 1
• -
• ξ
• )
• CP
• measured
• ⁢
• ρ
• standard
• (
• t
• exhaust
• -
• t
• measured
• )
• where, Qwind represents the air supply volume at the state point for the operation of the radiator fan, cm3/s;
• Pstandard represents a standard atmospheric pressure;
• qpower represents charging capacity or discharging capacity of energy storage system in unit time, W;
• ξ represents an energy efficiency coefficient of the energy storage system;
• C represents a specific heat of air;
• Pmeasured represents a measured ambient pressure value;
• pstandard represents an air density at the standard atmospheric pressure;
• texhaust represents a measured air exhaust temperature after passing through the radiator;
• tmeasured represents a detected environment temperature;
• wherein according to the calculated air supply volume at the state point of the radiator fan, the corresponding rotating speed of the radiator fan is obtained from the curve of the air volume and the rotating speed of the radiator fan or the comparison of the air volume and the rotating speed of the radiator fan, so as to control the rotating speed of the radiator fan;
• and
• wherein the data interaction module is configured to connect the network for data interaction.