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A low-temperature battery hybrid self-heating device and self-heating method based on it

A low-temperature battery and self-heating technology, which is 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., to save overall space Occupancy rate, low energy loss, and the effect of increasing the heat exchange area

Active Publication Date: 2021-11-19
XI AN JIAOTONG UNIV
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  • Claims
  • Application Information

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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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  • A low-temperature battery hybrid self-heating device and self-heating method based on it
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  • A low-temperature battery hybrid self-heating device and self-heating method based on it

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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 thereon, which belong to the technical field of lithium-ion battery self-heating. Two heat sources of a battery and a transistor are provided, and the two heat sources jointly heat the low-temperature battery. On the one hand, through The transistor driver controls the transistor to generate a heating current, and the heating current flows through the battery to generate self-heating heat inside the battery. On the other hand, by controlling the transistor to operate in the heated area, the transistor itself generates heat. The heat of the transistor is transferred to the battery through the hot plate and the internal heat of the battery is combined to heat the battery, forming a hybrid heating method of internal self-heating of the battery and heating of the transistor circuit, and realizing rapid self-heating of the low-temperature battery. The device can make full use of the self-heating of the battery and the heat generated in the heating circuit, which greatly improves the energy efficiency of the self-heating device, 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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Patent Type & Authority Patents(China)
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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