Integrated-form water-cooling power battery shell used for new energy automobiles

Abstract

The invention discloses an integrated-form water-cooling power battery shell used for new energy automobiles. The integrated-form water-cooling power battery shell used for new energy automobiles comprises an upper shell body and a lower shell body; the lower shell body is composed of a bottom plate and a side plate; the bottom plate is a cuboid, and is of a double layer structure composed of an upper layer bottom plate and a lower layer bottom plate; vertical ribs are uniformly arranged between the upper layer bottom plate and the lower layer bottom plate; a plurality of cooling water runnersare arranged between the upper layer bottom plate and the lower layer bottom plate; the cooling water runners are arranged to be parallel to the width direction of the bottom plate; the side plate isa rectangle frame composed of two long edge side plates and two short edge side plates; a water inlet channel and a water outlet channel are arranged on the external sides of the two long edge side plates respectively; one end of each cooling water runner is communicated with the water inlet channel, and the other end is communicated with the water outlet channel. According to the integrated-formwater-cooling power battery shell, a cooling device is arranged on the lower shell body via integration, so that the battery shell whole structure is simplified greatly, and the cost of the battery shell is reduced; the cooling water runners are arranged in the bottom plate of the lower shell body, so that the risk of module short circuit caused by water leakage of conventional cooling pipelinesis reduced; and the external walls of the cooling water runners are contacted with battery modules, so that cooling effect is improved.

Description

Technical field [0001] The invention relates to an automobile component, in particular to an integrated water-cooled power battery casing for a new energy automobile. Background technique [0002] Based on the continuous shortage of energy and serious environmental pollution, under the dual effects of national regulations and environmental factors, vigorously developing new energy vehicles has become an inevitable trend. The power battery system of a new energy vehicle is mainly composed of battery modules, battery casings, pipelines, and circuits. The power battery system is a key component of an electric vehicle. Its safety, reliability and durability are crucial, and determine the performance of the entire vehicle. The automobile power battery system is usually arranged under the underbody of the vehicle body, and has to withstand harsher installation environments and harsh working environments. As the carrier of the power battery, the battery case plays a vital role in the s...

AI Technical Summary

Problems solved by technology

At present, the water cooling device used in the power battery system is a cooling pipeline developed independently. The cooling pipeline is equipped with many pipe fittings, which has many problems such as many interfaces, many parts occupied, high risk of water leakage, complex assembly structure, and low working reliability.

In order to improve the cooling effect, the pipelines are mostly arranged inside the battery case. Once water leakage occurs, it will directly lead to a short circuit of the power battery system, causing serious consequences.

In addition, the current general-purpose steel battery case is self-heavy, not conducive to lightweight, complicated manufacturing process, and high processing cost.

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