Integrated Engine Start Charger With Energy Storage Switching
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Solution Overview
Problem
Existing chargers with integrated engine start functions suffer from unstable current, low charging efficiency, limited starting current, bulkiness, reliance on AC power, and excessive heat generation, leading to poor user experience and performance.
Innovation Solution
A charger integrating a high-frequency charger with an energy storage module, controlled by a controller, provides continuous stable charging current and instantaneous starting current through switches, ensuring efficient and safe operation, including reverse polarity protection and real-time monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a high-frequency charger is used, then charging efficiency is improved, but starting current is insufficient
Solution Approach 1:
The patent combines a high-frequency charger and a power-frequency transformer into a single integrated device. The high-frequency charger provides efficient charging during normal operation, while the power-frequency transformer delivers high starting current when needed, thus resolving the contradiction between charging efficiency and starting current capability.
Solution Approach 2:
The device dynamically switches between high-frequency charging mode and power-frequency starting mode based on real-time power requirements. The controller adjusts the operating mode according to whether the battery needs efficient charging or high-current starting, optimizing performance for each specific condition.
2Power
If a power-frequency transformer is used, then starting current is improved, but charging efficiency deteriorates
Solution Approach 1:
The system dynamically selects the appropriate operating mode based on power requirements. During engine starting operations, the power-frequency transformer is activated to deliver high current. During normal charging, the high-frequency charger operates to maintain high efficiency, thus resolving the contradiction between starting current and charging efficiency.
3Adaptability or versatility
If a hybrid charger design is used, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent merges two different charger architectures (high-frequency charger and power-frequency transformer) into a single integrated unit with shared components such as control circuits, switches, and output terminals. This reduces the overall complexity compared to having two separate devices while maintaining the ability to adapt to different power requirements.
4Productivity
If high current is provided during charging, then productivity is improved, but heat generation increases
Solution Approach 1:
The patent changes the operating parameters of the charger by switching between high-frequency operation (efficient, lower heat) for charging and power-frequency operation (high current capability) for starting. The high-frequency mode maintains higher efficiency even at elevated current levels, thereby enabling faster charging with reduced heat generation compared to traditional power-frequency chargers.
Data Source
AI summary
A charger with integrated engine start function, which is connected between an input terminal group and an output terminal group, comprising: a high-frequency charger, an input terminal of the high-frequency charger is connected to the input terminal group, an energy storage module, a first switch controllably connected to the high-frequency charger and the output terminal group, a second switch controllably connected to the high-frequency charger and the energy storage module, a third switch controllably connected to the energy storage module and the output terminal group; a controller connected to the first switch, the second switch and the third switch respectively. Through the combination of the high-frequency charger and the energy storage module, it can provide continuous and stable charging current for the battery, with high charging efficiency, and when the external battery fails, the energy storage module can provide a strong instantaneous current sufficient to start the engine.