Vehicle Boosting Circuit Control for Coil Protection
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Solution Overview
Problem
The existing power supply devices in vehicles face challenges in reducing size and weight due to the need for large, heat-resistant coils in boosting circuits, which can lead to malfunction or burning when engines are repeatedly started and stopped, causing battery voltage drops that affect electronic devices.
Innovation Solution
A power supply device with a boosting circuit that detects engine start counts and temperature, allowing voltage boosting only within predetermined limits to prevent coil burning, thereby reducing the size and weight of the device while ensuring reliable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large rated value boosting circuit is used to ensure reliable operation during repeated engine starts, then the reliability is improved, but the device size and weight increase
Solution Approach 1:
The patent applies dynamics by making the boosting circuit operation conditional rather than continuous. The control unit dynamically adjusts the boosting circuit based on engine start count and temperature conditions, allowing the circuit to operate only when necessary and within safe limits. This dynamic control enables the use of a smaller boosting circuit while maintaining reliability through intelligent operation management.
Solution Approach 2:
The patent changes operational parameters (engine start count and temperature) to control the boosting circuit. By monitoring these parameters and adjusting the circuit operation accordingly, the system achieves reliable voltage boosting only under appropriate conditions. This parameter-based control allows reduction of the boosting circuit rated value while ensuring reliability when needed.
2Reliability
If a large rated value boosting circuit is used to prevent coil burning during repeated engine starts, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The patent implements feedback control by having the control unit monitor engine start count and temperature conditions, then adjust the boosting circuit operation accordingly. The control unit receives feedback from sensors and adjusts the circuit operation to prevent coil burning while maintaining reliability. This feedback mechanism replaces the need for an oversized circuit with intelligent control logic.
Solution Approach 2:
The system performs self-service by automatically monitoring its own operational conditions (engine start count and temperature) and adjusting the boosting circuit operation accordingly. The control unit manages the circuit protection without external intervention, enabling the use of a smaller circuit while maintaining reliability through self-regulation.
3Stability of the object's composition
If voltage boosting is continuously enabled to maintain battery voltage during engine starts, then the voltage stability is improved, but the coil temperature increases leading to potential burning
Solution Approach 1:
The patent applies periodic action by enabling voltage boosting only during specific periods when engine start is detected and temperature conditions are appropriate. The control unit periodically checks engine start status and temperature, activating the boosting circuit only when both conditions are satisfied. This periodic operation maintains voltage stability during critical moments while preventing continuous operation that would cause excessive coil temperature.
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
The solution effectively prevents coil burning and ensures stable voltage boosting within safe operational ranges, reducing the risk of device malfunction and enabling a more compact power supply system.
Implementation Method 1
a boosting circuit configured to boost voltage supplied from the battery
Data Source
AI summary
A power supply device is mounted in a vehicle capable of starting an engine with power supplied from a battery, and includes a booster configured to boost voltage supplied from the battery, a detecting unit configured to detect an engine start, a counting unit configured to count an engine start count based on the detecting unit, and a control unit configured to control the booster. The control unit outputs a control signal to permit the booster to boost the voltage in response to the engine start when the engine start count counted by the counting unit within a timer period does not exceed an allowable number of times.