Flexibly-packaged cell water-cooling module mechanism

Abstract

The invention discloses a flexibly-packaged cell water-cooling module mechanism of a flexibly-packaged battery cooling system used for an electric vehicle, and aims to solve the problems of high probability of puncturing, large dimensional tolerance, complex assembling process, difficulty in dissipating single cell heat, and the like when an aluminum plastic film is used as external protection in an assembling process. The flexibly-packaged cell water-cooling module mechanism is characterized in that each flexibly-packaged cell is protected by a frame; an insulating water-cooling heat dissipation sheet is arranged on one side of each flexibly-packaged cell; capillary holes are formed in the insulating water-cooling heat dissipation sheet for performing heat exchange with the surface of the flexibly-packaged cell; a foaming plate with buffering and damping effects is arranged on the other side of the flexibly-packaged cell to eliminate expansion of the flexibly-packaged cell; a group of the flexibly-packaged cells are connected in series and in parallel to form a cycling structure of the insulating water-cooling heat dissipation sheet plus the flexibly-packaged cell plus the foaming plate and plus the insulating water-cooling heat dissipation sheet and the like; a cell tab is connected with a current converging plate through an ultrasonic wave welding way; coolant liquid and outlet are formed in end plates; and a liquid flow loop is formed in a module by the coolant. By virtue of the flexibly-packaged cell water-cooling module mechanism, a good heat dissipation effect and long service life of the battery are realized.

Description

technical field [0001] The invention relates to lithium-ion battery technology, in particular to a pouch cell water-cooling module mechanism of a pouch battery cooling system for electric vehicles. Background technique [0002] At present, the lithium-ion battery market is becoming more and more mature, and the advantages of soft-pack battery packs are gradually emerging. Existing batteries have their own characteristics in terms of battery cells and water-cooling structures, but their effects are not satisfactory. For example, the patent publication number is CN104916880A, a battery water cooling device for electric vehicles, including several batteries arranged in a matrix and several groups of cooling pipelines connected to each other through connecting pipes. The water inlet pipe and the water outlet pipe connected to the chamber, and the water inlet chamber and the water outlet chamber of a group of cooling pipelines are connected through a serpentine tube, and the serp...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the following problems: the traditional aluminum-plastic film is used as the external protection, which is easy to be punctured during the assembly process, and the dimensional tolerance is large after grouping, which is not conducive to the assembly of battery modules, and it is difficult to realize automatic production; the assembly process is complicated , the heat generated when the battery cells are charged and discharged is difficult to dissipate, and the cooling system cannot pass through each single battery cell, resulting in the battery operating in a high temperature environment in summer and reducing the service life of the battery

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