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Heating circuit of battery

A technology for heating circuits and batteries, applied in battery circuit devices, ohmic resistance heating, circuits, etc., can solve problems such as increased battery impedance, enhanced polarization, and decreased battery capacity, and achieve the effect of reducing energy loss

Active Publication Date: 2011-05-25
BYD SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a battery heating circuit for the problem that the battery will increase the impedance and polarization of the battery under low temperature conditions, which will lead to a decrease in the capacity of the battery

Method used

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Embodiment Construction

[0018] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0019] It should be pointed out that, unless otherwise specified, when mentioned below, the term "switch control module" refers to any control command (such as a pulse waveform) that can output control commands (such as pulse waveforms) according to set conditions or set moments to control the corresponding switching devices connected to it. The on-off controller, for example, can be a PLC; when mentioned below, the term "switch" refers to a switch that can realize on-off control through electrical signals or realize on-off control according to the characteristics of the components themselves, either It is a unidirectional switch, such as a unidirectional switch...

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PUM

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Abstract

The invention provides a heating circuit of a battery. The heating circuit comprises a switching device (10), a switching control module (100), a unidirectional semiconductor element D10, a damping element R and a transformer (T), wherein the switching control module (100) is electrically connected with the switching device (10); the battery, the damping element R, the first coil of the transformer (T) and the switching device (10) are mutually connected in series to form a battery discharging circuit; and the battery, the damping element R, the second coil of the transformer (T) and the unidirectional semiconductor element D10 are mutually connected in series to form a battery charging circuit. Current limit and energy storage are realized by using the transformer (T), the current in the charging and discharging circuits can be reduced to avoid damaging the battery, and the energy consumption of the whole heating process is reduced.

Description

technical field [0001] The invention belongs to the field of power electronics, in particular to a heating circuit for a battery. Background technique [0002] Considering that cars need to drive under complex road conditions and environmental conditions, or some electronic devices need to be used in poor environmental conditions, batteries used as power sources for electric vehicles or electronic devices need to adapt to these complex conditions. In addition to considering these conditions, the service life of the battery and the charge-discharge cycle performance of the battery also need to be considered, especially when the electric vehicle or electronic equipment is in a low-temperature environment, the battery needs to have excellent low-temperature charge-discharge performance and high input. output power performance. [0003] Generally speaking, under low temperature conditions, the impedance of the battery will increase, and the polarization will increase, thereby r...

Claims

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Application Information

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IPC IPC(8): H01M10/42H01M10/50H05B3/00H02J7/00
CPCH02J7/0057H01M10/443H01M2010/4271Y02E60/12H01M10/425H01M10/5083H01M10/5006H01M10/50H01L2924/0002H01M10/615H01M10/6571H02J7/0069Y02E60/10H01L2924/00
Inventor 韩瑶川徐文辉冯卫杨钦耀夏文锦马士宾
Owner BYD SEMICON CO LTD
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