Power battery low-temperature starting emergency heating device and control method based on thermochemical energy storage

Abstract

The invention discloses an emergency heating device for low-temperature start-up of a power battery based on thermochemical energy storage and a control method thereof. Sensors and controllers; there are heat exchange coils inside the battery pack, electric heaters and heat exchange coils inside the adsorption bed and liquid receiver, and the battery heat exchange coils are connected to the heat exchange coils of the adsorption bed through heat transfer pipelines The thermal circulation pipeline and the adsorption bed are used for thermochemical adsorption energy storage, and the sensors are respectively connected to the controller; the invention is suitable for heating up the components of the power battery of the car in the alpine region, and can solve the difficulty of starting the power battery at low temperature and the low capacity and stability issues.

Description

technical field [0001] The invention belongs to the field of new energy vehicles, and in particular relates to a power battery low-temperature starting emergency heating device based on thermochemical energy storage and a control method thereof. Background technique [0002] After entering the 21st century, with the rapid economic and social development, people's demand for travel continues to increase. At the same time, traditional fossil energy such as petroleum is gradually in short supply, and people's awareness of environmental protection is increasing day by day. In this context, the research and development and manufacture of new energy vehicles have received more and more attention from more and more countries, and power batteries are widely used as the main power components of new energy vehicles. [0003] Lead-acid batteries, lithium-ion batteries, nickel-hydrogen batteries, etc. have been widely used in the field of power batteries. However, power batteries have...

AI Technical Summary

Problems solved by technology

However, power batteries have disadvantages such as difficulty in starting at low temperatures, reduced capacity, and reduced lifespan.

The existence of these shortcomings has greatly hindered the use and promotion of power batteries in alpine regions, and at the same time makes electric vehicle power batteries full of potential in emergency heating

[0004] So far, there are fuel heating, wind heating, and water heating methods for heating low-temperature batteries, but each of these methods has limitations such as excessive pollution, large power consumption, and complex structure.

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