Quick-inserting type cooling device for power lithium battery

Abstract

The invention discloses a quick-inserting type cooling device for a power lithium battery. The device comprises current collectors at two ends and extrusion tubes, and tube joints are arranged on at least one current collector. The device is characterized in that at least one inserting port is formed in each current collector, and two ends of each extrusion tube are in inserted connection with theinserting port through a connector. According to the quick-inserting type cooling device for the power lithium battery, the extrusion tubes and the connectors are connected to form assemblies, and all that is required is that the extrusion tube and connector assemblies are in inserted connection with the current collectors during assembly. Due to the small processing area of the extrusion tubes and the connectors, the welding difficulty and product weight are greatly reduced, the manufacturing cost is saved, product flatness is improved, and product quality is guaranteed.

Description

technical field [0001] The invention relates to a power lithium battery cooling device, in particular to a power lithium battery cooling device for a pure electric vehicle or a hybrid power, in particular to a quick-plug type power lithium battery cooling device. Background technique [0002] Pure electric vehicles and hybrid vehicles use batteries as the power source, which can achieve zero pollution during use, and can use coal, water and other non-oil resources, and can effectively solve vehicle pollution and energy problems, so they are generally valued worldwide . The performance and quality of these vehicles depend to a large extent on the performance of the power battery packs they are equipped with. Temperature is a crucial factor affecting the performance of power batteries. When the vehicle is running under different driving conditions, the battery will be discharged at different rates and generate a large amount of heat at different heat generation rates. In add...

AI Technical Summary

Problems solved by technology

When the vehicle is running under different driving conditions, the battery will be discharged at different rates, and a large amount of heat will be generated at different heat generation rates. In addition to time accumulation and space effects, uneven heat accumulation will result, resulting in complex and variable operating temperatures of the battery pack.

Excessively high temperature will reduce the capacity, life and energy efficiency of the battery. If the heat accumulated in the battery cannot be dissipated in time, it will lead to thermal runaway. In severe cases, the battery may expand violently and explode. The power lithium battery cools down the battery so that its working temperature is in a better range

[0003] At this stage, new energy vehicles mainly use liquid-cooled batteries, and the liquid-cooled device mainly uses welded liquid-cooled plates. Due to the large area of ​​the current liquid-cooled plate, the welding process is difficult, and it is difficult to ensure that the final product will not be deformed.

The more the number of cooling tubes increases, the larger the area of ​​the liquid cooling plate, and the more obvious its defects

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