Charging Interface Voltage Detection for Reliable Power Bank Control
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Solution Overview
Problem
Existing charging control circuits for mobile power supplies have poor reliability due to their complexity, often implemented by integrated circuits or discrete devices, leading to inefficiencies and potential safety issues.
Innovation Solution
A charging control circuit design featuring a communications interface housing with insulating parts between conductive elements, a control sub-circuit, and load detection, which simplifies the circuit by reducing components and enhances reliability through intelligent voltage detection and load connection management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an integrated circuit IC or detection circuit built by discrete devices is used to implement automatic charging control, then the charging control function can be achieved, but the circuit complexity increases and reliability decreases
Solution Approach 1:
The patent merges the detection circuit and control circuit into a single integrated charging control chip. The detection module detects charging parameters (current, voltage, temperature) and the control module adjusts charging parameters, both functions are integrated into one chip rather than using separate discrete devices, thereby reducing circuit complexity and improving reliability.
Solution Approach 2:
The charging control chip performs multiple functions including detection of charging parameters, control of charging current and voltage, temperature monitoring, and communication with the terminal device. By making the chip multi-functional, the patent eliminates the need for multiple separate components, reducing overall circuit complexity while maintaining comprehensive charging control capabilities.
2Ease of operation
If manual charging control with a switch is used, then the user can control power output, but the circuit structure becomes more complex
Solution Approach 1:
The charging control chip automatically detects whether a terminal device is connected and autonomously controls the charging process. The detection module detects the connection status and charging parameters, and the control module automatically adjusts charging parameters without requiring manual switch operation, thereby eliminating the need for manual switches while maintaining ease of use.
3Ease of manufacture
If the charging control circuit uses multiple discrete devices, then the circuit can be built, but the number of components increases leading to more potential failure points
Solution Approach 1:
The patent combines multiple discrete devices (detection circuit, control circuit, communication interface) into a single integrated charging control chip. This integration reduces the total number of components that need to be assembled and connected, thereby simplifying manufacturing while simultaneously reducing the number of potential failure points and improving overall circuit reliability.
Data Source
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AI summary
A charging control circuit, a charging circuit, and a charging control method. The charging control circuit (100, 500) comprises: a communication interface housing (102, 502), a communication interface (103, 503), and a control sub-circuit (101, 501). ,The communication interface housing (102, 502) comprises a first conductive portion (1021, 5021), a second conductive portion (1023, 5023), and an insulating portion (1022, 5022). The insulating portion (1022, 5022) is provided between the first conductive portion (1021, 5021) and the second conductive portion (1023, 5023). The first conductive portion (1021, 5021) is connected to a first voltage terminal, the second conductive portion (1023, 5023) is connected to a second voltage terminal, and a first voltage connected to the first voltage terminal is greater than a second voltage connected to the second voltage terminal. The control sub-circuit (101, 501) is separately connected to the first conductive portion (1021, 5021) and the communication interface (103, 503) and is configured for controlling a power supply apparatus (504) electrically connected to the communication interface (103, 503) to start when detected that the voltage of the first conductive portion (1021, 5021) changes from the first voltage to the second voltage, such that the power supply apparatus (504) provides a charging voltage for the communication interface (103, 503).