Barren liquor type direct-cooling energy storage battery pack

Abstract

The invention relates to a barren liquor type direct-cooling energy storage battery pack, which comprises a box body, wherein a low-boiling-point refrigerant is injected into the box body; a battery pack soaked in the low-boiling-point refrigerant in the box body; and a condensation module arranged in the box body and positioned above the battery pack; wherein the battery pack comprises a plurality of first channel plates distributed at intervals and single batteries arranged among the first channel plates, a second channel plate is arranged at the bottom of the battery pack, first channels incontact with the surfaces of the single batteries are arranged in the first channel plates, and second channels in contact with the surfaces of the single batteries are arranged in the second channelplate; a condensation backflow channel is arranged in the condensation module, at least one connecting channel used for being communicated with the condensation backflow channel and the second channel is arranged between the battery pack and the box body, and the condensation backflow channel, the connecting channel, the second channel and the first channel are communicated to form a circulationloop. The refrigerants make direct contact with the battery, the battery is directly cooled through phase change heat absorption, the heat conduction speed is high, and the cooling efficiency is high.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a liquid-poor direct cooling energy storage battery pack. Background technique [0002] The cooling design of the fully submerged energy storage battery pack is to achieve the purpose of cooling the battery by immersing the whole battery in the cooling liquid. The battery has two methods of tight assembly and gap assembly in the cooling liquid. The battery is tightly assembled, and most batteries Only the narrow side is in contact with the coolant, the heat exchange area is small, and the heat dissipation speed is slow; the battery is assembled in gaps, and the contact between the battery and the coolant is better, but the grouping efficiency of the battery pack is relatively low, and the space utilization rate is relatively low. The energy density is also relatively low; at the same time, the coolant is in a flowing state inside the battery pack, which is easy to shake, leak, ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems of poor battery cooling effect and low grouping efficiency of battery packs in the prior art, the present invention provides a lean liquid direct cooling energy storage battery pack, which utilizes the feature of large heat absorption during phase change of the refrigerant, Let the refrigerant directly contact the battery, and directly cool the battery through phase change heat absorption, with fast heat conduction and high cooling efficiency

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