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Low-temperature battery hybrid self-heating device and self-heating method based on same

A low-temperature battery and self-heating technology, applied to secondary batteries, circuits, electrical components, etc., can solve the problems of low heating efficiency of self-heating methods, insufficient use of external energy, excessive energy consumption, etc.

Active Publication Date: 2021-01-05
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the external energy generated by the heating circuit in the existing method is not fully utilized, the self-heating method has the problem of low heating efficiency.
If you want to improve the heating efficiency, you need to increase the heating current, resulting in excessive energy consumption

Method used

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  • Low-temperature battery hybrid self-heating device and self-heating method based on same
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  • Low-temperature battery hybrid self-heating device and self-heating method based on same

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Embodiment Construction

[0039] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0040] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...

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Abstract

The invention discloses a low-temperature battery hybrid self-heating device and a self-heating method based on the same, and belongs to the technical field of lithium ion battery self-heating. Two heat sources of a battery and a transistor are arranged and jointly heat a low-temperature battery, on one hand, a transistor driver controls the transistor to generate heating current, and the heatingcurrent flows through the battery to generate self-heating heat in the battery. On the other hand, the transistor is controlled to work in the heating area, and the transistor generates heat. Heat ofthe transistor is transmitted to the battery through the hot plate to jointly heat the battery with heat generated in the battery, a hybrid heating mode of battery internal self-heating and transistorloop heating is formed, and rapid self-heating of the low-temperature battery is realized. The device can fully utilize the self-heating of the battery and the heat generated in the heating loop, sothat the energy efficiency of the self-heating device is greatly improved, and the energy loss is extremely low.

Description

technical field [0001] The invention belongs to the technical field of lithium-ion battery self-heating, and relates to a low-temperature battery hybrid self-heating device and a self-heating method based thereon. Background technique [0002] Lithium-ion batteries have been widely used to store electrical energy in electric vehicles, mobile robots, and sustainable energy systems due to their high energy density, high specific power, long cycle life, and low self-discharge rate. For regions with high latitudes (the temperature can be as low as 40°C), lithium-ion batteries in the above devices will inevitably be used in lower temperature environments. In a low temperature environment, the internal resistance of the lithium-ion battery will increase sharply (up to 10 times), and at the same time, the capacity of the battery will decline irreversibly, which greatly affects the power output of the battery, so that the performance of the lithium-ion battery will be greatly improv...

Claims

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Application Information

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IPC IPC(8): H01M10/615H01M10/637H01M10/6554H01M10/667H01M10/0525
CPCH01M10/0525H01M10/615H01M10/637H01M10/6554H01M10/667Y02E60/10
Inventor 徐俊徐梓铭王海涛梅雪松
Owner XI AN JIAOTONG UNIV
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