Super-capacity lithium ion battery pack with heat-transfer oil circulating radiating device

Abstract

A super-capacity lithium ion battery pack with a heat-transfer oil circulating radiating device mainly comprises a battery pack box body, a radiating pipe, a fin, lithium ion batteries and an oil conservator, wherein the battery pack box body adopts a full-oil charge seal type structure; the metal bellows expansion oil conservator is arranged at the top of the box body and is communicated with the battery pack box body through a guide pipe; clamping grooves are uniformly, internally and correspondingly formed in the top and bottom of the battery pack box body; each lithium ion battery is clamped between the clamping grooves which correspond up and down to keep vertical and stable; the fin is connected with the periphery of the battery pack box body; the connectors of the radiating pipe are respectively arranged at the upper and the lower end of the fin and communicated with the battery pack box body; under the heating, the heat-transfer oil forms a natural circulation convection in the battery pack box body. The lithium ion battery pack has a simple structure; the heat-transfer oil can serve as not only a cooling medium, but also an insulator, can continuously flow in the closed battery pack box body and the radiating pipe, without being corroded by moisture, is high in radiating, and can ensure the normal working of the super-capacity lithium ion battery pack.

Description

technical field [0001] The invention relates to a super-large-capacity lithium-ion battery pack with a heat-conducting oil circulation heat dissipation device, belonging to the technical field of new energy sources. Background technique [0002] Large-capacity lithium-ion battery packs have been tried in electric vehicles and will become one of the main power sources for electric vehicles in the 21st century, and will be used in satellites, aerospace and energy storage. [0003] The charging and discharging capacity of lithium-ion batteries is closely related to temperature, but a large amount of heat will be generated during the charging and discharging process of lithium-ion batteries. If the heat is not dissipated in time, it will affect the charging and discharging efficiency of the battery, reduce the service life of the battery and damage its use. security. In order to improve the performance of the battery pack, it is necessary to effectively cool the battery pack wh...

AI Technical Summary

Problems solved by technology

[0004] The heat dissipation of large-capacity lithium-ion battery packs in the prior art mainly relies on forced ventilation to take away the heat from the surface of the battery pack. The heat is not easy to dissipate in the place where the battery packs are densely packed inside the box, resulting in low charging and discharging efficiency of the battery, reducing the service life of the battery, and affecting the safety of use

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