CP Contact Power Supply for Charging Station Standby Loads
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Solution Overview
Problem
Current charging stations do not supply power to plugged-in loads in standby mode, requiring additional external power sources or energy storage devices for operation.
Innovation Solution
A device connected to the charging station's CP contact and protective conductor, utilizing a current limiter to maintain a voltage above the threshold for standby mode, optionally with a voltage converter and storage device, allowing continuous power supply to external loads without activating the charging station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a load is directly connected to the CP contact to enable power supply in standby mode, then the load can be powered, but the voltage level drops below the threshold causing the charging station to exit standby mode
Solution Approach 1:
A current limiter is introduced as an intermediary component between the CP contact and the load. This current limiter restricts the current flowing to the load, thereby preventing excessive voltage drop at the CP contact. The load receives sufficient power through the current limiter while the CP contact maintains its voltage level above the threshold, keeping the charging station in standby mode.
2Use of energy by moving object
If additional external power supply or energy storage device is used to power the load in standby mode, then the load can operate continuously, but the device complexity increases
Solution Approach 1:
The charging station's own CP contact is utilized to power the load during standby mode, eliminating the need for separate external power supplies or energy storage devices. The current limiter enables the CP contact to directly serve dual purposes: maintaining standby mode detection and providing power to the load, thereby simplifying the overall system architecture.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables continuous power supply to external loads during standby mode without exiting the charging station's standby state, ensuring stable operation and energy availability.
Implementation Method 1
the current limiter is configured to limit a current drawn by the CP contact in such a way that a voltage drop of a potential between the CP contact and a protective conductor is less than 3 V
Data Source
AI summary
A device is disclosed which is configured to receive electrical energy from a Control Pilot (CP) contact of a charging station, the device having at least one load that, in operation, is supplied with the energy from the CP contact of the charging station, and a current limiter connected between the CP contact of the charging station and the load. The at least one load, in operation, is supplied with the electrical energy from the charging station in a standby mode of the charging station via the current limiter. Furthermore, an arrangement having a device and a charging station is disclosed.