Battery pack heating control method

A heating control and battery pack technology, applied to secondary batteries, circuits, electrical components, etc., can solve the problems of inaccurate temperature rise control, incomplete heating, and slow heating speed, and achieve fast heating speed, uniform heating, and control The effect of temperature changes

Inactive Publication Date: 2018-05-18
安徽沃特玛新能源电池有限公司
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Problems solved by technology

[0003] In the prior art, since the performance of lithium-ion power batteries is greatly reduced in low-temperature environments, in order to improve the performance in low-temperature environments, heating belts are usually used for preheating treatment, but this heating method has the disadvantages of slow heating speed and incomplete heating. And the problem of inaccurate temperature rise control

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  • Battery pack heating control method

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[0013] In order to make the objectives, technical solutions, and beneficial technical effects of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described in this specification are only for explaining the present invention, not for limiting the present invention.

[0014] See figure 1 The present invention provides a battery pack heating control method, which uses a temperature detection device to detect the real-time temperature inside the battery pack and feeds the real-time temperature back to the battery management system. The battery management system obtains a real-time temperature lower than the first setting. Start the light wave heating device to heat the battery pack at a constant temperature. Compared with the heating belt in the prior art, the use of a light wave heating device to heat t...

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Abstract

The invention provides a battery pack heating control method. A temperature detection apparatus is adopted for detecting the internal real-time temperature of the battery pack and feeding back the real-time temperature to a battery management system; when the real-time temperature obtained by the battery management system is lower than a first set temperature, a light wave heating apparatus is started to heat the battery pack; the light wave heating apparatus performs heating on the battery pack in N sections, wherein N is a positive integer not smaller than 2, and the heating duration in thefirst section is the first set duration; and the battery management system estimates the heating duration of the second section according to the heating rate in the heating process of the first section, and then estimates the heating duration of the N section according to the heating rate in the heating process of the (N-1) section based on the rule, until the heating process of the Nsection is completed when the real-time temperature of the battery pack achieves the needed standard temperature.

Description

【Technical Field】 [0001] The invention relates to the technical field of power batteries, in particular to a method for controlling the heating of a battery pack. 【Background technique】 [0002] With the shortage of fossil energy and the increasingly serious environmental pollution problems, lithium-ion power batteries have been applied to the automotive industry because of their energy storage, fast charge and discharge, long cycle life, and environmental friendliness. In recent years, electric vehicles using lithium-ion power batteries as energy sources have been rapidly developed and applied. [0003] In the prior art, since the performance of lithium-ion power batteries in a low temperature environment is greatly reduced, in order to improve the performance in a low temperature environment, a heating belt is usually used for preheating. However, this heating method has slow heating speed and incomplete heating. And the temperature rise control is not precise and other problems...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/615H01M10/625H01M10/635
CPCH01M10/615H01M10/625H01M10/635Y02E60/10
Inventor 李湃张劲波张经国汪飞丁春貌吴翔宇李金林
Owner 安徽沃特玛新能源电池有限公司
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