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Sine alternating-current lithium battery low-temperature self-heating device and method

A technology of sinusoidal AC and heating method, applied in battery circuit devices, circuit devices, secondary batteries, etc., can solve the problems of battery life and capacity, self-heating is not universal, and lithium batteries are not uniformly heated, etc. Low, reduced impact, uniform heating effect

Active Publication Date: 2021-10-22
FUJIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the heating speed of this method is fast, it needs to be equipped with a lithium battery temperature controller. At the same time, this heating method will cause uneven heating of the lithium battery, which will affect the battery life and capacity.
[0009]2. The existing internal heating uses high-current discharge to heat the battery, and this solution is based on the case of a large battery; This method cannot be used when the lithium battery is over-discharged, which will also reduce its life and capacity
And self-heating using a self-discharge scheme is not universal
[0010] At the same time, there is currently no available technical solution that can realize charging and heating of lithium batteries

Method used

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  • Sine alternating-current lithium battery low-temperature self-heating device and method
  • Sine alternating-current lithium battery low-temperature self-heating device and method
  • Sine alternating-current lithium battery low-temperature self-heating device and method

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Embodiment Construction

[0046] As shown in the figure, a kind of sinusoidal alternating current lithium battery low-temperature self-heating device, the self-heating device includes a sinusoidal alternating current circuit connected to the lithium battery charging interface; the sinusoidal alternating current circuit outputs alternating current to the lithium battery charging interface to recharge the lithium battery for charging or heating.

[0047] The self-heating device includes a control system. When the self-heating device outputs AC current to the charging interface of the lithium battery, its working mode includes a single heating mode and a charging heating mode; the alternating current output in the single heating mode heats the lithium battery; The alternating current output in the above charging and heating mode can heat and charge the lithium battery at the same time.

[0048] The self-heating device also includes a temperature sensor that can detect the temperature of the lithium batter...

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Abstract

The invention provides a sine alternating-current lithium battery low-temperature self-heating device. The self-heating device comprises a sine alternating-current circuit connected with a lithium battery charging interface, and the sine alternating-current circuit outputs alternating current to the lithium battery charging interface to charge or heat the lithium battery. According to the invention, the lithium battery can be charged and heated at the same time in low-temperature and normal-temperature environments.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a low-temperature self-heating device and method for a sinusoidal alternating current lithium battery. Background technique [0002] In terms of circuit structure design, CLC resonant network is often used in electric field coupled wireless power transmission and inductively coupled wireless power transmission; its resonant network composed of inductors and capacitors has high efficiency and can greatly reduce the overall loss of the circuit; at the same time, The CLC resonant network also has the function of impedance amplification. Different parameter values ​​are designed, and the amplification factors are also different, and the structure is simple. [0003] With the continuous advancement of technology, lithium batteries are widely used in rail transit, photovoltaic power generation, smart power supply and military power supply due to their high energy density and long lif...

Claims

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Application Information

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IPC IPC(8): H01M10/615H01M10/635H01M10/637H01M10/44H02J7/00
CPCH01M10/615H01M10/635H01M10/637H01M10/44H02J7/007192H02J7/0029Y02E60/10
Inventor 黄晓生俞智坤林抒毅宋慧姝詹鑫斐黄靖郑荣进
Owner FUJIAN UNIV OF TECH
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