Vehicle Battery Power Conversion for Low-Voltage Load Isolation
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Solution Overview
Problem
Existing power battery and starting battery systems in vehicles are independent, leading to high costs and complex power supply methods with potential safety hazards.
Innovation Solution
Integration of a first voltage conversion module in a battery apparatus that allows the power battery to function as both an energy supply unit for high voltage power sections and a starting battery, with electrical isolation between high and low voltage during energy conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power battery and starting battery are used as two independent batteries, then the vehicle can ensure power supply for both high voltage power sections and low voltage loads, but the cost increases and the power supply system becomes complex
Solution Approach 1:
The power battery is designed to perform multiple functions: it serves as both the high voltage power source for power sections and, through the voltage conversion module, as the starting battery for low voltage loads. This multi-functionality eliminates the need for a separate starting battery while ensuring reliable power supply for both high voltage and low voltage systems.
Solution Approach 2:
A voltage conversion module is introduced as an intermediary device between the power battery and low voltage loads. This module converts the high voltage output from the power battery to the appropriate low voltage level, enabling the power battery to indirectly power low voltage loads while maintaining electrical isolation and system safety.
2Reliability
If power battery and starting battery are used as two independent batteries, then the vehicle can ensure power supply for both high voltage power sections and low voltage loads, but the cost increases
Solution Approach 1:
The power battery is designed to perform multiple functions: it serves as both the high voltage power source for power sections and, through the voltage conversion module, as the starting battery for low voltage loads. This multi-functionality eliminates the need for a separate starting battery while ensuring reliable power supply for both high voltage and low voltage systems.
3Reliability
If voltage conversion module is added to enable power battery to supply low voltage loads, then the system complexity increases, but electrical isolation between high and low voltage is achieved
Solution Approach 1:
A voltage conversion module is introduced as an intermediary device between the power battery and low voltage loads. This module converts the high voltage output from the power battery to the appropriate low voltage level, enabling the power battery to indirectly power low voltage loads while maintaining electrical isolation and system safety.
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 simple and safe power supply methods, reducing costs and ensuring power consumption safety by allowing the power battery to serve multiple scenarios, including power-off states, while maintaining electrical isolation.
Implementation Method 1
the first voltage conversion module includes: a transformer, a primary winding of the transformer connected to the power battery, a secondary winding of the transformer connected to the first load
Data Source
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AI summary
A battery apparatus, which is applied to a power supply system and a vehicle. The battery apparatus comprises a power battery and a first voltage conversion module, wherein a first end of the first voltage conversion module is connected to the power battery, and a second end of the first voltage conversion module is directly connected to a first load; and the first voltage conversion module is configured to: in a power-off state of a vehicle, process a voltage which is output by the power battery, so as to supply power to the first load. Further disclosed are a power supply system and a vehicle.