Battery Clip Output Protection Circuit for Stable Jump Starting
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Solution Overview
Problem
Existing emergency start power supply products face instability in output control signals due to hardware and software failures, leading to malfunction and unusability.
Innovation Solution
An output control circuit with a first protection module that disconnects or limits current between a power supply end and a load end based on the power supply state, ensuring circuit protection and stability without relying on complex software or hardware recognition circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a programmable control device (MCU) with hardware recognition circuit is used to control the ignition output electronic switch, then the control functionality is improved, but the stability and reliability deteriorate due to potential hardware and software failures
Solution Approach 1:
The patent extracts and removes the programmable control device (MCU) and hardware recognition circuit from the system. Instead of using complex software control, the invention employs a simple protection module that directly monitors power supply voltage and current, and automatically controls the electronic switch based on preset thresholds, eliminating the reliability issues associated with software and complex hardware recognition circuits
Solution Approach 2:
The protection module is designed to autonomously monitor power supply parameters and control the electronic switch without requiring external control signals from an MCU. The module self-adjusts its operation based on real-time detection of voltage and current levels, making the system self-regulating and eliminating dependencies on potentially failing software control
2Measurement precision
If complex hardware recognition circuits and software control are used, then the control precision is improved, but the device complexity increases
Solution Approach 1:
The patent applies local quality by implementing detection functions specifically at critical points in the circuit where power supply voltage and current are monitored. Rather than using complex system-wide control, simple detection circuits are placed locally at the power supply input and switch control points, achieving sufficient measurement precision for power supply state detection while keeping overall device complexity low
Solution Approach 2:
The protection module uses parameter changes by comparing real-time power supply voltage and current against preset threshold values. When parameters exceed or fall below these thresholds, the module automatically changes the state of the electronic switch. This approach achieves adequate detection precision through simple threshold comparison rather than complex measurement systems
3Device complexity
If no protection module is used, then the device complexity is reduced, but the reliability deteriorates due to inability to handle abnormal power supply states
Solution Approach 1:
The protection module is designed with preset threshold values for voltage and current that are determined before the product is put into use. These preliminary settings enable the module to automatically respond to abnormal power supply states without requiring complex real-time analysis or additional control systems, achieving reliable circuit protection with minimal added complexity
Solution Approach 2:
The protection module acts as an intermediary component between the power supply module and the electronic switch. It monitors the power supply state and controls the switch based on this information, providing a simple but effective layer of protection that isolates the switch from harmful electrical conditions without requiring complex system-level intervention
Data Source
AI summary
An output control circuit, a start power supply, and a battery clip are provided in the present disclosure. The output control circuit includes a power supply end, a load end, and a first protection module. The power supply end is configured to be connected with a power supply module. The load end is configured to be connected with an external load device. The power supply end is electrically connected with the load end at least through the first protection module, to implement the power supply module supplying power to the external load device at least through the first protection module. The first protection module is configured to monitor a power supply state of the power supply module supplying power to the external load device, and disconnect a connection between the power supply end and the load end or limit a current based on the power supply state.