DC Charging Detection Circuit Merging Adhesion and Voltage Measurement
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Solution Overview
Problem
Conventional direct current charging piles require separate adhesion detection and battery voltage measurement circuits, increasing production costs due to similar fundamental principles and redundant components.
Innovation Solution
A detection circuit that combines switch adhesion detection and battery voltage measurement using a series-connected configuration of detection modules, allowing for shared components and simplified structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate adhesion detection circuit and battery voltage measurement circuit are arranged, then detection functions are complete, but production cost increases
Solution Approach 1:
The patent merges the adhesion detection circuit and battery voltage measurement circuit into a single integrated detection circuit. The same detection circuit performs both functions by switching between different measurement modes, eliminating redundant components and reducing production costs while maintaining complete detection functionality.
Solution Approach 2:
The detection circuit is designed with multi-functionality to perform both adhesion detection and battery voltage measurement. By incorporating switchable connection configurations and multiple detection modules, a single circuit achieves multiple detection purposes, replacing what would traditionally require separate dedicated circuits.
2Measurement precision
If separate adhesion detection circuit and battery voltage measurement circuit are arranged, then detection accuracy is ensured, but circuit structure becomes complex
Solution Approach 1:
The patent combines multiple detection functions into a single circuit structure, reducing the overall complexity. The integrated design uses shared components and switchable configurations rather than parallel separate circuits, simplifying the overall circuit architecture while preserving measurement precision through dedicated detection modules for each function.
Solution Approach 2:
The detection circuit employs dynamic switching mechanisms to adapt its configuration based on the detection mode. Switches and controllable connections allow the circuit to reconfigure itself for different measurement tasks (adhesion detection vs. voltage measurement), maintaining accuracy for each function while avoiding the need for static separate circuits.
Data Source
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AI summary
A detection circuit, a detection method and an application device are provided, applicable to the technical field of direct current charging. The detection circuit includes a first detection module, a second detection module, and a third detection module. The first detection module is connected in series to the third detection module to form a series branch. The series branch is connected between output terminals of a positive bus switch and a negative bus switch. A first end of the second detection module is connected to a node at which the first detection module is connected in series to the third detection module. A second end of the second detection module is connected to an input terminal of the positive bus switch or an input terminal of the negative bus switch. The conductive states of the first detection module and the third detection module are controllable. A connection relationship between the detection modules can be changed according to an on-off state of the bus switch and the control of conductive states of the first and third detection modules, thereby changing a voltage across each detection module. The detection circuit has a simpler structure.