Electric vehicle discharging system, discharging control method and electric vehicle

Abstract

The invention discloses an electric vehicle discharging system, a discharging control method and an electric vehicle, wherein the electric vehicle discharging system comprises a charging and discharging module and a discharging device, the input end of the discharging device is connected to the charging and discharging module, and the output end of the discharging device is connected to a load ora to-be-charged vehicle; the charging and discharging module comprises a discharging control module, and the discharging control module is connected with the control guide signal output end of the discharging device and is used for receiving a control guide signal sent by the discharging device and controlling the charging and discharging module to discharge outwards according to the control guidesignal. According to the electric vehicle discharging system, the discharging control method and the electric vehicle, the discharging module is additionally arranged in the charging system of the electric vehicle and is internally provided with the discharging control module, a controllable discharging strategy for preventing mistaken discharging is formed through the cooperation of the discharging control module and the discharging device, and meanwhile, other unauthorized discharging guns can be prevented from being mistakenly used.

Description

technical field [0001] The invention relates to the field of electric vehicle charging and discharging, in particular to an electric vehicle discharging system, a discharge control method and the electric vehicle. Background technique [0002] With the popularity of new energy vehicles, in addition to converting external energy and charging the vehicle power battery, the on-board charging system also has the ability to convert the excess energy of the power battery of the electric vehicle into alternating current and discharge it outside the vehicle to charge other vehicles. Or for loads such as household appliances. [0003] However, the external discharge conditions of electric vehicles are complex and there are different modes of discharge. Due to the connection confirmation (CC, Connection Confirm) signal resistance range defined in the "Electric Vehicle Conductive Charging System" (national standard GB / T 18487, hereinafter referred to as the national standard) Limited,...

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Problems solved by technology

[0005] 1) Distinguish the discharge mode and discharge capacity completely through the CC resistance range, there are few discharge combinations, and the functions are not rich enough;

[0006] 2) Because the range of CC resistance used for discharge defined by each manufacturer is inconsistent, and there is no other control strategy, it is easy to cause misuse, damage equipment and affect personal safety;

[0007] 3) Plug in the discharge gun whose CC resistance is defined within the V2L discharge range, and then discharge, which may cause the V2L discharge gun to be charged and endanger personal safety when it is not in use, and may also cause the V2V discharge gun to be mistaken for a V2L discharge gun. Charge the gun tip of the charging end in advance (insert the V2V discharge gun, and the other end has not been inserted into the charging port of another vehicle that needs to be charged at this time. If it is mistaken for a V2L gun by the discharge car, it will directly output electric energy. The gun head is already charged, which may endanger personal safety), and the V2L discharge gun must be plugged in and out, which does not meet the national standard and may damage the vehicle

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