Power battery cooling system of new energy automobile

Abstract

The invention discloses a power battery cooling system of a new energy automobile. The power battery cooling system is characterized by comprising a heat exchanger, a first pump, a controller and an absorption refrigeration device connected with the heat exchanger, wherein the heat exchanger is connected with the first pump; a cooling channel is arranged between every two adjacent groups of batteries of a power battery module; each cooling channel is internally provided with a stereotyped phase-change material; one ends of the cooling channels are communicated with the heat exchanger by a first cooling pipe, and the other ends of the cooling channels are communicated with the first pump by a second cooling pipe; the first cooling pipe and the second cooling pipe are respectively and internally filled with cooling liquid; the power battery module is internally provided with a first temperature sensor used for measuring the maximum temperature of the batteries, and a second temperature sensor used for measuring the minimum temperature of the batteries; the first temperature sensor and the second temperature sensor are respectively and electrically connected with the controller; the controller is electrically connected with the first pump. The power battery cooling system of the new energy automobile has the advantages that the system can save the electric energy so as to improve the endurance of the new energy automobile; furthermore, the system is high in safety.

Description

technical field [0001] The invention relates to the field of new energy vehicles, in particular to a cooling system for a power battery of a new energy vehicle. Background technique [0002] As the problem of environmental pollution has become increasingly prominent, new energy vehicles have developed rapidly in recent years. New energy vehicles are generally divided into pure electric vehicles and hybrid vehicles. At present, most new energy vehicles use lithium-ion power batteries as the electric power source. However, the battery life of lithium-ion power batteries is limited. In high temperature weather, in order to meet the comfort of the car, the battery needs to provide electric energy cooling, and the battery itself also needs cooling capacity, which consumes a lot of electric energy, which further reduces the battery life. [0003] The existing power battery cooling system is to design an air-cooling or water-cooling system in the battery box to dissipate heat fro...

AI Technical Summary

Problems solved by technology

However, the price of phase change materials is high, which increases the cost of the battery cooling system. Moreover, most phase change materials use organic phase change materials with low thermal conductivity. When the thermal runaway of the power battery occurs, organic phase change materials are likely to cause fires Even explode, there is a safety hazard

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