Intelligent charging method for electromobile

An intelligent charging method and electric vehicle technology, applied in the direction of secondary battery charging/discharging, secondary battery repair/maintenance, etc., can solve the problem of not considering the power load

Active Publication Date: 2011-05-04
奇瑞新能源汽车股份有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] At present, the charging methods of electric vehicle on-board chargers are basically constant current and then constant voltage. The method is relatively simple, and the charging power is 2.2-3.3kw. The power level is set according to the state of charge of the battery (SOC). It starts with high-power constant current charging, and then switches to low-power constant voltage charging when it is almost fully charged.

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  • Intelligent charging method for electromobile
  • Intelligent charging method for electromobile
  • Intelligent charging method for electromobile

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Embodiment Construction

[0019] The present invention will be described in detail below according to the accompanying drawings, which is a preferred embodiment among various implementations of the present invention.

[0020] The present invention provides an intelligent charging method for an electric vehicle on-board charger. The system structure is as follows: figure 1 As shown, the two-phase alternating current of the power grid passes through the power oscillator; then it is connected to the on-board charger through the charging cable and the charging socket. The charger is connected to the battery management system BMS and the battery pack, and the BMS is also connected to the battery pack.

[0021] After the two-phase alternating current of the grid passes through the oscillator, the oscillator calculates the current power load rate B of the grid in real time according to parameters such as grid voltage changes and current harmonics. The charger is connected to the AC power supply through the ch...

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Abstract

The invention relates to an intelligent charging method for electromobiles, comprising the following steps: introducing factors, such as electrical load factor of an electric network, identification charging time, electromobile battery states and the like on the basis of a common charger; automatically and optimally calculating the current charging policy for the whole electromobile; and automatically regulating charging power and charging time so as to achieve the design targets of safe charging (reducing impact on network load), economic charging (minimizing charging cost) and service life extension of the battery. The invention comprises an EC (Economic Charging) mode for maximizing charging quantity in the low power period of electric network, and a FC (Fast Charging) mode for fast charging the battery at allowable maximum charging power during initial charging.

Description

technical field [0001] The invention belongs to the design technology of electric vehicle charging system, in particular, it can intelligently and automatically calculate and allocate charging time, charging power, process and send battery charging status information, etc., and the whole vehicle can automatically recognize the driver's intention and automatically implement intelligent charging. , an intelligent charging system with the lowest charging cost and the fastest speed and a control method thereof. Background technique [0002] At present, the charging methods of electric vehicle on-board chargers are basically constant current and then constant voltage. The method is relatively simple, and the charging power is 2.2-3.3kw. The power level is set according to the state of charge (SOC) of the battery. It begins with high-power constant-current charging, and then switches to low-power constant-voltage charging when it is almost fully charged. From the power load chang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/44
CPCY02E60/10
Inventor 陈松先
Owner 奇瑞新能源汽车股份有限公司
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