Heat radiating system for battery pack

Abstract

The invention relates to a heat radiating apparatus of a battery, in particular to a heat radiating system for a battery pack, which is used for cooling a power battery pack on an electric motor coach. A common heat radiating system of a battery pack is strong wind cooling and water cooling: the wind cooling drives an electronic fan to blow wind or extract wind by the electricity supplied by the power battery pack, thereby increasing the working load of the battery and shortening the operation mileage of the electric motor; the water cooling is provided with a complicated cooling water pipeline and a water pump motor with high performance, so that the technical requirement is high, a hidden trouble water leakage exists, and two cooling systems cost too much for long-time use. The invention provides the heat radiating system of the battery pack with simple structure, safe use and low cost. The heat radiating system comprises a gas supplying source a gas pipeline, wherein the gas supplying source is compressed gas, the input end of the gas pipeline is connected with the supplying source of the compressed gas, and the output end is connected with a battery box for placing the battery. In the invention, the power battery pack is radiated and cooled by the compressed gas without mounting the electronic fan or being embedded with a water channel and the water pump motor.

Description

【Technical field】 [0001] The invention relates to battery cooling equipment, in particular to a battery cooling system which uses compressed gas to cool a power battery used in an electric passenger car. 【Background technique】 [0002] As a pollution-free green transportation tool, the electric bus is energy-saving and environmentally friendly, and has a very good prospect of use. Since the power battery pack on an electric bus generates heat during operation and its temperature rises rapidly, in order to make the power battery work normally, it is necessary to effectively dissipate heat and cool down the battery pack. Common cooling systems are divided into forced air cooling and water cooling. Among them, the air-cooled heat dissipation system is powered by the power battery pack, and the electronic fan is used to blow or extract air to cool the battery pack. Using an electronic fan will increase the battery workload, increase operating costs, and shorten the average daily...

AI Technical Summary

Problems solved by technology

The water-cooling system needs to embed water channels in each module of the power battery pack, install a set of electronically controlled water circulation pumps, and take away the heat generated by the power battery pack through the circulation of water. It is composed of several modules and most of them are stacked on top of each other. The cooling water pipe passage structure used for installation and use is complex and has many elbows, resulting in large water flow damping and slow flow in the pipe. It has high requirements on the performance of the water pump motor, and an average of 10 hours per day. For example, if a 250W DC or other water pump motor is installed on an electric vehicle, the daily power consumption required for heat dissipation is about 2.5 degrees, the cost of use is high, the economy is poor, and maintenance costs are required for long-term use. security risks

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