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Method and device for controlling heating of battery

A battery heating and battery technology, applied in the secondary battery, sequence/logic controller program control, electrical program control and other directions, can solve the problem of not being able to better protect the battery, to ensure the charging and discharging performance and prolong the life. Effect

Active Publication Date: 2010-12-29
BYD CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the above-mentioned shortcomings that the existing methods and devices for controlling battery heating cannot better protect the battery, and provide a method and device for controlling battery heating that can better protect the battery

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  • Method and device for controlling heating of battery

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] First of all, it should be noted that in the present invention, the so-called "battery" includes not only a single battery cell, but also a battery pack composed of multiple battery cells. The various descriptions of "battery" are applicable to both single battery cells and battery packs. For example, for a single battery cell, the so-called "positive and negative poles of the battery" refers to the positive and negative poles of the battery cell, while for a battery pack, the so-called "positive and negative poles of the battery" refers to the positive and negative poles of the battery pack. positive and negative poles.

[0019] figure 1 It is a flowchart of a method for controlling battery heating according to the present invention, such as figure 1 As shown, the method for controlling battery heating provided by the present invention is generally divided i...

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Abstract

The invention provides a method and a device for controlling the heating of a battery. The method comprises the following steps of: when the starting heating condition is met, starting heating the battery; and when the stopping heating condition is met, stopping heating the battery, wherein the stopping heating condition is one of the following conditions that: the state of charge (SOC) of the battery is no smaller than an SOC set value and the discharge current of the battery reaches the rated current of the battery or heating time reaches first maximum heating time; and the SOC of the battery is smaller than the SOC set value and time for keeping the discharge current of the battery unchanged reaches set time or the discharge current is reduced or the heating time reaches second maximumheating time. The stopping heating condition is improved; and compared with the mode of stopping heating by single temperature judgment in the prior art, the method and the device provided by the invention have more diversified considered factors, better meet the requirement of the battery in different states of charge, cannot damage the battery and prolong the service life of the battery.

Description

technical field [0001] The invention relates to a method and a device for controlling the heating of a battery. Background technique [0002] At present, lithium batteries have become ideal power sources for portable electronic devices and electric vehicles. Considering that the car needs to drive under complex road conditions and environmental conditions, or some electronic equipment needs to be used in poor environmental conditions, the battery used as the power supply of electric vehicles or electronic equipment needs to adapt to these complex conditions, especially when electric When the vehicle or electronic equipment is in a low-temperature environment, the battery needs to have excellent low-temperature charge and discharge performance and high output and input power performance. [0003] Generally speaking, under low temperature conditions, during the charging process of lithium-ion batteries, the migration rate of lithium ions slows down, making it difficult to int...

Claims

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Application Information

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IPC IPC(8): H01M10/50G05B19/04H01M10/615
CPCY02E60/12Y02E60/10
Inventor 吴光麟刘进张浩沈晞
Owner BYD CO LTD
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