A charging cc signal detection and single wake-up circuit

Abstract

The invention discloses a charging CC signal detection and single wake-up circuit, which includes a protection module, an external charging gun is connected to the protection module through a charging interface, the protection module is connected to the CC signal detection module, and the CC signal detection module is respectively connected to the wake-up The module and the capacitor fast discharge module are connected. One-time wake-up of the electronic control unit is realized while completing the detection of the charging connection confirmation signal CC connection, and the duration of a single wake-up can be parameterized according to the requirements of the electric vehicle or the electronic control unit to ensure the response of the quick plug-in and pull-out charging gun, ensuring The charging connection confirmation signal CC effectively wakes up when the charging gun is plugged in once, and it will not wake up continuously. At the same time, it is guaranteed to support quick plug-in and unplug operation, without affecting the user's usage habits.

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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