Cooling device for battery pack

Abstract

The invention discloses a cooling device for a battery pack. The cooling device for the battery pack comprises a vehicle-mounted air conditioner. The vehicle-mounted air conditioner comprises an air conditioner controller which is respectively connected with an air conditioner panel, a compressor, a condensing fan and an air blower. The air blower comprises an air blower motor and an air door adjusting motor; an air blowing opening of the air door adjusting motor is respectively communicated with the battery pack and an in-vehicle space; a battery box and a temperature sensor are arranged inside the battery pack, and the temperature sensor is electrically connected with a battery heat management system of the battery box; and the battery heat management system is electrically connected with the air conditioner controller. The cooling device provided by the invention has the beneficial effects that by using the vehicle-mounted air conditioner and allocating a working state. different refrigeration methods are used according to different temperature levels in the battery pack and the cooling device is not influenced by ambient temperature in use, so that the temperature of the power battery pack is effectively reduced, the unnecessary energy consumption of a battery is avoided, the maximum utilization ratio of electric energy is reached, and the driving range of an electro-mobile is increased.

Description

technical field [0001] The invention belongs to the technical field of automotive power battery cooling systems, and in particular relates to a power battery pack cooling device utilizing a vehicle-mounted air conditioner for refrigeration. Background technique [0002] With the development of industrial technology, petroleum resources as a power source are decreasing due to their non-renewability. At the same time, in order to reduce environmental pollution, the exhaust emissions of fuel vehicles are also increasingly strictly controlled. Based on the above reasons, green new energy has become the development. Popular, electric vehicles have also become the focus of research and development in the current automotive industry; and the biggest feature of electric vehicles, including hybrid vehicles, is that they use power batteries to store energy and release it during driving. Therefore, power batteries are electric vehicles. A key part on the vehicle; the normal operation o...

AI Technical Summary

Problems solved by technology

[0003] At present, the power battery pack cooling system usually adopts two structural forms: air-cooled and water-cooled, but both have certain defects: the cooling effect of the air-cooled device is limited in the high temperature environment in summer, and the complete use of air-conditioning air cooling will increase the energy of the power battery Consumption; the structure of the water-cooling device is complicated and the cost is high, and once the water-cooling pipeline breaks, leakage will easily cause short circuit and other problems, resulting in damage to the battery and other equipment, so the water-cooling device is rarely used in current electric vehicles

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