Intelligent charging method of electric automobile

An intelligent charging method and electric vehicle technology, applied in electric vehicles, secondary battery charging/discharging, battery circuit devices, etc., can solve the problem that the single battery charging method cannot be extended, the battery pack is not fully charged, and the battery charging stops, etc. problem, to achieve the effect of meeting temporary use needs, reducing charging time, and reducing usage rate

Active Publication Date: 2015-01-21
HUIZHOU EPOWER ELECTRONICS
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Problems solved by technology

In this method, because electric vehicle batteries are connected in series and in parallel, during the constant voltage charging process, due to the inconsistency of the voltage of the battery cells, that is, the voltage of each battery after the batteries are connected in series cannot be exactly the same, so the battery The group cannot continue to use the charging method of the single battery
For example: Lithium manganate battery pack 1 a

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  • Intelligent charging method of electric automobile

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[0047] In order to allow those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described below in conjunction with specific examples.

[0048] The present invention is a control function module based on the battery management system (BATTERY MANAGEMENT SYSTEM). The battery management system has the functions of single voltage collection, temperature collection, current collection, total voltage collection, bus communication, real-time clock, data storage and so on. The charger is an on-board charger, which is a programmable control device that exchanges data and instructions through communication lines. The charging control of the car battery is realized through the battery management system sending the opening or closing command, the charging current and the charging voltage. Wherein, the main relay is connected in series between the negative pole of the battery and the charging connection port, a...

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Abstract

The invention relates to an intelligent charging method of an electric automobile. The method includes the following steps: 1, inserting a charging plug, powering up a battery management system, and initializing the battery management system; 2, acquiring the current state information of a battery by the battery management system, and reading preserved history charging information, interlock switch state information and system time; and 3, selecting a corresponding charging mode according to the information acquired in step 2, wherein the system time is consistent with a current actual time. Compared with the prior art, the intelligent controlled charging method has the advantages of safety, high efficiency, effective use of electrical network valley loading time to charge, and prolongation of the service life of the battery.

Description

technical field [0001] The invention relates to the field of automotive electronics, in particular to an intelligent charging method for electric vehicles. Background technique [0002] At present, electric vehicles are still in the promotion stage, and charging control technology is still in a relatively simple stage. Existing charge control methods: The first method is to charge the battery by setting a small constant current charge, and end the charge when the voltage is fully charged. In this method, because the charging current is relatively small, the charging time is relatively long and the charging efficiency is low. The second method is to charge by setting a relatively large constant current. When charging reaches the voltage limit condition, it will switch to constant voltage charging. When the current drops to the set value, stop charging, or when the battery voltage reaches the limit condition, force Stop charging. In this method, because electric vehicle bat...

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Application Information

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IPC IPC(8): H01M10/44H02J7/00
CPCH01M10/443Y02E60/10
Inventor 刘飞文锋阮旭松余祖俊周东锡
Owner HUIZHOU EPOWER ELECTRONICS
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