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Charging and discharging control method and system for electric vehicle

A charging and discharging control, electric vehicle technology, applied in electric vehicles, battery/fuel cell control devices, control devices, etc., can solve the problems of aggravated battery loss and aging, high cost, and reduced user enthusiasm, so as to reduce waiting time, The effect of prolonging life and improving overall efficiency

Active Publication Date: 2019-01-11
STATE GRID ELECTRIC VEHICLE SERVICE CO LTD +2
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Using aging batteries for V2G operation will not only fail to achieve satisfactory results, but will also aggravate battery loss and aging, which is unacceptable for electric vehicle users; rapid discharge or large Power discharge will also increase the aging speed of the battery, and the price paid by the user is too high, which will inevitably reduce the enthusiasm of the user to participate in V2G

Method used

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  • Charging and discharging control method and system for electric vehicle
  • Charging and discharging control method and system for electric vehicle
  • Charging and discharging control method and system for electric vehicle

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Embodiment Construction

[0075] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0076] In view of the weak current situation of users’ enthusiasm for participating in V2G in the general application of electric vehicles, it reflects the following problems in the existing charging and discharging strategies: electric vehicles of different brands and different years of operation are regarded as the same ideal model, and there is no Differentiated charging and discharging management, if the aging of the battery is not taken into account in G2V, fast charging is uniformly used in order to save time, which will cause huge damage to the battery. If slow charging is uniformly used to protect the battery, the waiting time will be increased; in V2G Rapid response to grid dispatching will also damage the battery. In order to protect the battery from not participating or responding less to grid dispatching, it will directly reduce user income, and at...

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Abstract

The invention provides a charging and discharging control method and system for an electric vehicle. The charging and discharging control method for an electric vehicle includes the steps: based on abattery state information stored in advance, making a battery charging and discharging scheme; according to the determined battery charging and discharging scheme, controlling the charging and discharging operation of the electric vehicle; and storing the state information of the battery after charging and discharging. The scheme can realize decentralized recording and management of battery life cycle state information of the electric vehicle, can help users to grasp the battery operation situation in real time, can reasonably select a charging and discharging mode, can improve comprehensive use efficiency of the battery, and can give full play to the maximum value of the battery.

Description

technical field [0001] The invention relates to the technical field of electric vehicle energy storage, in particular to a charging and discharging control method and system for an electric vehicle. Background technique [0002] At present, the charging and discharging mode of electric vehicle charging piles is not friendly to electric vehicle on-board batteries. Traditional charging and discharging strategies do not consider the aging factors of electric vehicle on-board batteries, and all electric vehicle on-board batteries are charged and discharged as a unified ideal model. [0003] From the perspective of G2V, different charging types have different effects on the charging effect of electric vehicle on-board batteries. The domestic GB / T 18487.1-2015 standard classifies the charging types (GBT 20234.3-2015 Electric vehicle conductive charging connection device Part 3: DC charging interface; GBT 20234.2-2015 Electric vehicle conductive charging connection device Part 2: A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L58/10B60L58/12B60L58/16
CPCB60L2240/547B60L2240/549Y02T10/70Y02T10/7072Y02T90/12
Inventor 严辉冯义苏舒丁宁秦俭曹曦陈吉奂张杨
Owner STATE GRID ELECTRIC VEHICLE SERVICE CO LTD
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