A heat pipe temperature control system for a vehicle power battery box

Abstract

The present invention relates to the technical field of electrically powered automobiles, and in particular relates to a temperature control system with thermal tubes for a vehicle power battery box. The temperature control system with thermal tubes comprises an outer battery box, an inner battery box, and a plurality of battery cells provided inside the inner battery box, with heat-sink thermal tubes or heating thermal tubes closely clamped between the battery cells; the heat-sink thermal tubes or heating thermal tubes are separated from each other; a heat-preserving plate for the outer box is provided on the body of the outer battery box, and a cover plate for the inner box is provided on the top of the body of the inner battery box; the other parts of the body of the inner battery box are provided with heat-preserving plates for the inner box; heating devices are provided on the bottom of the inner battery box; heat-sink fans are provided on the outer battery box. The temperature control system with thermal tubes can be used to heat the battery during subzero winters in northern regions as well as to dissipate heat from the battery during hot weather in summers, providing a good operating environment for the battery cells and playing an important role in improving the service performance and the safety of the battery cells.

Description

Technical field: [0001] The invention relates to the technical field of electric vehicles, and more specifically relates to a heat pipe temperature control system for a vehicle power battery box. Background technique: [0002] One of the core technologies of electric vehicles is the energy storage and supply system, especially for lithium batteries, the uniformity of heat dissipation and temperature of the battery pack in the vehicle plays an important role in improving the performance and safety of the battery pack. The temperature is controlled between 20-45°C, which is good for both the electrical performance and safety performance of the battery. The lower the temperature, the lower the ionic conductivity of the electrolyte, and the slower the electrode reaction will be, which will not only cause a decrease in battery capacity and power performance, but also cause lithium precipitation on the surface of the negative electrode when charged at low temperature, which will b...

AI Technical Summary

Problems solved by technology

[0004] Due to the narrow operating temperature range of lithium batteries, the temperature environment of lithium batteries used in electric vehicles is relatively poor at present, and the heat dissipation of batteries in summer is poor, resulting in a decrease in capacity and power, which may easily lead to safety accidents; extreme cold in winter in the north Under such circumstances, the battery discharge performance of the currently used electric vehicles is very serious, and even the car cannot be driven.

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