Switched Power Supply Device with Multi-Function Energy Storer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing switched power supply devices for motor vehicles with 'Stop & Start' systems face challenges in efficiently managing high electrical power demands without oversizing the supply or causing voltage drops, which can impact vehicle performance and safety.
Innovation Solution
A switched power supply device with a controller and DC/DC converter that selectively uses multiple electrical energy storage devices for start-up, restart, voltage increase, and voltage maintenance tasks, allowing for optimized power distribution and reduced stress on individual storage devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If an auxiliary energy source (second battery) is added to the on-board network, then the power supply capacity is improved, but the device complexity and space requirements increase
Solution Approach 1:
The additional electrical energy storer is designed to perform multiple functions: it can increase voltage during engine start-up by connecting in series with the first battery, and it can maintain voltage during restart operations by connecting in parallel. This multi-functionality resolves the contradiction by eliminating the need for separate dedicated components for each function, thereby improving power supply capacity without proportionally increasing device complexity
2Power
If high-capacity capacitors are added to temporarily increase voltage, then the power delivery capability is improved, but the device complexity and cost increase
Solution Approach 1:
The additional electrical energy storer serves as a universal component that can provide voltage boosting during start-up and voltage maintenance during restart operations. By using a single component for multiple purposes rather than separate dedicated components, the solution improves power delivery capability while minimizing the increase in device complexity
3Device complexity
If the additional energy storer is dedicated to a single mission, then the system simplicity is improved, but the adaptability and efficiency decrease
Solution Approach 1:
The system employs dynamic switching mechanisms that allow the additional electrical energy storer to be connected in series or parallel with the first battery depending on the operational phase. During start-up, it connects in series to boost voltage; during restart operations, it connects in parallel to maintain voltage. This dynamic reconfiguration enables a single component to adapt to different task requirements, resolving the contradiction between system simplicity and task flexibility
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 enables efficient power management across different driving phases, maintaining network stability and extending the lifespan of storage devices by allowing multiple tasks to be performed by the same additional energy storer, thus preventing voltage drops and optimizing energy use.
Implementation Method 1
a DC/DC electrical power converter
Data Source
Figure 1~2
AI summary
The invention relates to a switched supply device for supplying electricity to the on-board network a motor vehicle. The device is characterized in that it includes a programmable controller which enables the performances to be adapted to the needs of the motor vehicle. The device uses three power storage devices in order to provide adequate power supply to the entire on-board network of a vehicle during the different driving phases.