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Battery heating control method for electric vehicle battery management system

A battery management system and heating control technology, applied in secondary batteries, circuits, electrical components, etc., can solve problems such as the inability to charge and discharge the battery pack, and the inability to meet the driver's needs for power battery characteristics.

Active Publication Date: 2018-01-19
JASMIN INT AUTO RES ANDDEV BEIJING CO LTD
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Problems solved by technology

[0006] The purpose of the present invention is to provide a battery heating control method for the electric vehicle battery management system, to solve the problem that the battery pack in the existing BMS cannot be charged and discharged under low temperature conditions, and cannot meet the characteristic requirements of the power battery and the needs of the driver. question

Method used

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  • Battery heating control method for electric vehicle battery management system

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Embodiment Construction

[0047] 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 drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0048] An embodiment of the present invention provides a battery heating control method for a battery management system of an electric vehicle, including a PTC heating control mode before charging, a PTC heating control mode before discharging, and a PTC heat preservation heating control mode, wherein PTC is the English abbreviation of Positiv...

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Abstract

The invention relates to the technical field of electric vehicle battery management, in particular to a battery heating control method for an electric vehicle battery management system. According to the method, PTC power supply switching of an on-board charger or off-board charger and batteries is achieved through information interaction with the charger, thereby completing the function of PTC heating before charging, PTC heating before discharging or PTC heat-insulating heating. The problem of limitations of a battery pack in the BMS to charging and discharging of the batteries in a low-temperature condition is solved; the charging and discharging security of the batteries at a relatively low environment temperature is ensured; the characteristics and security needs of power batteries ofa hybrid electric vehicle and a pure electric vehicle are fully considered; and meanwhile, the requirements of a driver are met.

Description

technical field [0001] The invention relates to the technical field of electric vehicle battery management, in particular to a battery heating control method used in an electric vehicle battery management system. Background technique [0002] With the shortage of energy and the increasingly serious environmental pollution, countries have higher and higher requirements for vehicle emissions. Electric vehicles, as a kind of green transportation with almost zero pollution, have been paid more and more attention by governments. As one of the core components of electric vehicles, the battery management system (Battery Management System, referred to as BMS) is directly related to the industrialization process of electric vehicles. Many domestic universities and enterprises have also invested a lot of manpower and material resources in the design and development of electric vehicle BMS, and completed the debugging or small batch trial production of functional samples. [0003] At ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/615H01M10/625H01M10/637
CPCY02E60/10
Inventor 张毅高贺然吴红
Owner JASMIN INT AUTO RES ANDDEV BEIJING CO LTD
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