Hybrid Battery-Supercapacitor Supply for Fast Engine Startup
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional lead-acid batteries in automobiles are inefficient in supplying an initial instant large current for engine startup, resulting in slow and weak engine acceleration due to their slow discharging and charging speeds.
Innovation Solution
A power supply apparatus combining a battery unit with a supercapacitor, a switch unit, a bidirectional voltage buck/boost converter, and control units to provide an initial instant large current to the engine startup motor, allowing the supercapacitor to supply high current and the battery to supply steady power, with the option to recharge both components from an external power source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a lead-acid battery is used to supply power to the startup motor, then the battery can provide continuous power supply, but the discharging speed is slow and the initial current is small
Solution Approach 1:
The patent combines a supercapacitor module and a lead-acid battery module into a hybrid power supply system. The supercapacitor provides high-speed discharging for initial current, while the battery provides continuous power supply, resolving the contradiction between fast discharging speed and high initial current capability.
Solution Approach 2:
The power supply function is segmented into two distinct modules: a supercapacitor module for high-power instantaneous discharge and a battery module for continuous power supply. This segmentation allows each module to optimize its specific function, with the supercapacitor handling the initial current surge and the battery maintaining continuous operation.
2Force
If a lead-acid battery is used for engine startup, then the battery can maintain steady power supply, but the initial accelerating force is weak and startup is slow
Solution Approach 1:
By merging the supercapacitor and battery into a hybrid system, the patent enables the supercapacitor to deliver the high initial current needed for strong accelerating force, while the battery provides sustained power. This combination reduces startup time while maintaining steady power supply throughout the operation.
3Power
If a supercapacitor is used to supply initial large current, then the initial current and accelerating force are improved, but the supercapacitor requires frequent recharging
Solution Approach 1:
The hybrid system merges the supercapacitor's high-power capability with the battery's long-duration energy storage. The supercapacitor handles instantaneous high current demands, while the battery provides extended operating duration, eliminating the need for frequent recharging while maintaining high initial current output.
4Power
If a hybrid power supply system combining supercapacitor and battery is used, then the initial current and startup performance are improved, but the device complexity increases
Solution Approach 1:
The patent introduces a control module as an intermediary that manages the complex interactions between the supercapacitor and battery. This control module automatically switches between different power sources and modes, simplifying the user interface while enabling the sophisticated hybrid power supply functionality.
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
Enables a more powerful and rapid engine startup by providing an initial instant large current, improving acceleration force and allowing for efficient recharging of both the battery and supercapacitor.
Implementation Method 1
a supercapacitor connected to the second node N2; the supercapacitor to supply an initial instant large current via the switch unit to the load
Implementation Method 2
a battery unit connected to a first node N1; the battery unit to supply a steady current via the bidirectional voltage buck/boost converter unit to the load
Implementation Method 3
a bidirectional voltage buck/boost converter unit having a first port P1 connected to the first node N1 and a second port P2 connected to the second node N2
Data Source
AI summary
A power supply apparatus is proposed, which uses a battery unit integrally combined with a supercapacitor for supplying power to a load of the type that requires an initial instant large current for quick startup, such as the engine startup motor of an automobile. in operation, the invention uses both the battery unit and the supercapacitor to supply power to the load, characterized in that the supplied power contains an initial instant large current for quick startup of the load. When recharging is required, an external recharging power unit can be used to recharge both the battery unit and the supercapacitor, In the application on automobiles, the invention can replace traditional lead-acid batteries for supplying power with an initial instant large current to the engine startup motor of the automobile, thereby allowing the startup motor to produce a more powerful and rapid accelerating force for quick engine startup.