Power battery heating control method applied to hybrid electric vehicles

A technology of a hybrid vehicle and a control method, which is applied in the directions of secondary batteries, secondary battery charging/discharging, and secondary battery repair/maintenance, etc., can solve the problems of occupying vehicle interior space, slow heating speed, and complicated heating structure, etc. To achieve the effect of ensuring controllability, simple structure, and ensuring heating current

Active Publication Date: 2017-11-03
XIAMEN GOLDEN DRAGON BUS
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  • Claims
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Problems solved by technology

[0003] The invention discloses a control method applied to the heating of a power battery of a hybrid electric vehicle to solve the problems in the prior art of slow heating speed, low efficiency, complicated heating structure and occupying space in the vehicle

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  • Power battery heating control method applied to hybrid electric vehicles

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Embodiment Construction

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is some embodiments of the present invention, but not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present invention, all other implement...

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Abstract

The invention discloses a power battery heating control method applied to hybrid electric vehicles. The power battery heating control method is characterized by comprising the following steps: S1, controlling electrification of a system, and detecting whether battery temperature is lower than a preset temperature, if yes, entering into step S2, and if not, entering into step S5; S2, starting an engine, and enabling engine speed to be a preset speed; S3, acquiring the allowable charging current upper limit I1 of BMS, the allowable discharging current upper limit I2 of BMS and the allowable charging and discharging current I3 of the engine; S4, controlling the engine to carry out cyclic charging and discharging on a battery according to I1, I2 and I3 so as to quickly heat the battery, so that the battery reaches the preset temperature; and S5, relieving an alarm, and controlling the system to be in a normal work mode. The power battery heating control method applied to the hybrid electric vehicles disclosed by the invention is simple and good in heating effect.

Description

technical field [0001] The invention relates to the technical field of automotive electronics, in particular to a control method for heating a power battery of a hybrid electric vehicle. Background technique [0002] With the development of new energy electric vehicles, lithium battery power battery packs are used more and more widely. However, due to their own electrochemical characteristics, they cannot perform high-power charging and discharging at low temperatures, and their output capacity decreases with temperature. Decrease rapidly, and the lower the temperature, the greater the decline. Therefore, when the temperature is low in winter in cold regions, if new energy electric vehicles do not have an effective battery heating system, it will be difficult to promote their use in alpine regions. In order to solve this problem, at present, heating system devices are mainly added on the basis of the original battery system, such as electric heating wire, PTC material heati...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/615H01M10/625H01M10/654H01M10/44
CPCH01M10/44H01M10/615H01M10/625H01M10/654Y02E60/10
Inventor 林剑健林必生王柏卫兰发祥谢延兴
Owner XIAMEN GOLDEN DRAGON BUS
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