Distributed energy storage system and control method thereof

Abstract

The invention discloses a distributed energy storage system and a control method thereof.The distributed energy storage system comprises a plurality of energy storage cabinets and independently arranged heat exchange devices, each energy storage cabinet is internally provided with an energy storage device and a heat exchange channel, and each heat exchange device is provided with an interface component; the heat exchange channels of all the energy storage cabinets are connected into the interface component in parallel, and the heat exchange device provides heat exchange media for all the heat exchange channels through the interface component. The heat exchange device in the distributed energy storage system is independently arranged, so that structural design, transportation and the like of the heat exchange device and the energy storage cabinet do not interfere with each other, and the performance of the heat exchange device and the energy storage cabinet can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of heat exchange, in particular to a distributed energy storage system and a control method thereof. Background technique [0002] At present, the cooling device used for supporting the energy storage battery cabinet is generally integrated inside each battery cabinet. The disadvantages are: 1) In the scenario of centralized installation of large energy storage batteries, there are a large number of battery cabinets, and each battery cabinet is integrated with a set of cooling devices. Or multiple sets of cooling devices, resulting in an proportional increase in the number of supporting cooling devices, and the cost is too high; 2) The battery cabinet and cooling device must be transported as a whole, and the transportation plan is not flexible; 3) The cooling device is located in the battery cabinet, reducing the battery cabinet 4) The cooling device increases the overall weight of the battery cabinet, whic...

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Problems solved by technology

[0002] At present, the cooling device used for supporting the energy storage battery cabinet is generally integrated inside each battery cabinet. The disadvantages are: 1) In the scenario of centralized installation of large energy storage batteries, there are a large number of battery cabinets, and each battery cabinet is integrated with a set of cooling devices. Or multiple sets of cooling devices, resulting in an proportional increase in the number of supporting cooling devices, and the cost is too high; 2) The battery cabinet and cooling device must be transported as a whole, and the transportation plan is not flexible; 3) The cooling device is located in the battery cabinet, reducing the battery cabinet 4) The cooling device increases the overall weight of the battery cabinet, which greatly reduces the mass energy density of the energy storage battery; 5) The cooling device is limited by size and installation in the battery cabinet, and the heat dissipation environment is poor, resulting in the energy efficiency of the cooling device. 6) The cooling device is limited by the installation space, and generally uses a scroll compressor and a small-sized heat exchanger, so the cooling capacity is small and cannot Suppress the peak heat load of the energy storage battery, resulting in a higher battery temperature, affecting battery life and safety; 7) The cooling device is located in the battery cabinet, with small manual operation space and difficult maintenance

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