Power cell module with reinforced heat radiation function

Abstract

The invention discloses a power cell module with a reinforced heat radiation function. The power cell module comprises a cell module case, a case top cover and a high heat conduction phase change sheet. The sheet is prepared from several high heat conduction graphite films and a composite material of a composite phase change material and high heat conduction plastic through physical or physical compression. The sheet is provided with several pores arranged in an array and is used for a single cell implemented by multiple series connection or parallel connection. The surface of each single cell tightly contacts with the sheet section so that contact thermal resistance is reduced. Through physical or physical compression, the graphite films and the composite material are pressed to form the sheet in a sandwich form so that uniformity of the fused graphite films and composite material is realized. The sheet is coated with heat-conduction insulative film so that electrical insulating properties of the power cell module and the environment are good.

Description

technical field [0001] The invention relates to a pure electric vehicle power battery module, in particular to a power battery module with enhanced heat dissipation function. Background technique [0002] With the rapid development of science and technology and the growth of social economy, the contradiction between global population and energy has become increasingly prominent. The transportation industry is one of the largest industries in the market, and the emergence of electric vehicles has attracted much attention from all walks of life. China's electric vehicles have grown from scratch, and the technology is in a state of continuous progress. A technology system for the entire electric vehicle industry chain with independent intellectual property rights has been established. However, the two core issues of electric vehicle batteries - driving range and safety issues, restrict whether electric vehicles can be industrialized. When the power battery is running, with th...

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Problems solved by technology

The use of air cooling can cool the battery to a certain extent, but as the heat dissipation requirements for the battery increase, only simple forced air cooling cannot meet the demand for cooling the battery; according to the theory of convective heat transfer, the effect of liquid cooling is excellent, but considering its The complex system, high requirements for leak-proof sealing, and the need for additional booster pumps and pipelines to achieve circulation and other factors lead to high process costs; using the high latent heat and temperature stability characteristics of phase change materials in the phase change range can make the battery module work stably It works in the temperature range, but its high heat storage capacity makes it difficult to transfer heat to the outside

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