Detection and single wake-up circuit for charging CC signal

Abstract

The invention discloses a detection and single wake-up circuit for a charging CC signal. The circuit comprises a protection module, wherein an external charging gun is connected with the protection module through a charging interface, the protection module is connected with a CC signal detection module, and the CC signal detection module is connected with a wake-up module and a capacitor quick discharge module. According to the detection and single wake-up circuit for the charging CC signal, one-time awakening of an electric control unit is realized while the charging connection confirmation signal CC connection detection is completed, the single wake-up duration can be subjected to parameter configuration according to the requirements of an electric automobile or an electric control unit,the response of the quick plug-in charging gun is ensured, and the charging connection confirmation signal CC is ensured to be effectively awakened when the charging gun is inserted in a single time;and in addition, the wake-up does not continuously last, it is guaranteed that the fast plug-in operation is supported at the same time, and the use habit of a user is not affected.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a circuit for detecting and single-time wake-up of a charging CC signal. Background technique [0002] With the rapid development of the electric vehicle industry, the state has strengthened the relevant standard requirements for vehicle charging management and control. For electric vehicle AC slow charging, the charging gun and vehicle connection confirmation CC signal and charging guidance CP signal requirements have been added. The charging connection confirmation signal CC is used to confirm the connection status of the charging gun and the electric vehicle, and to specify the maximum current that the charging cable can withstand. The control confirmation signal CP is used to monitor the function of interaction between the electric vehicle and the power supply equipment. [0003] The CP signal is an active signal and can be used as a wake-up source, but its state has various...

AI Technical Summary

Problems solved by technology

[0005] When the charging gun is inserted, that is, when the charging connection confirmation signal CC is connected, the external resistor voltage divider will continue to exist, and the wake-up signal will always exist, and the existence of the wake-up signal will cause the wake-up loop to have a continuous working current, and at the same time it will be woken up. The unit will also not be able to be powered off, and will always be in working condition. At this time, the lead-acid battery on the car will maintain a certain current consumption, which will easily lead to the failure of the lead-acid battery to start normally due to power loss, or the battery will be damaged due to repeated charging, causing potential safety hazards.

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