Series-Parallel DC/DC Converter Control for Multi-Load Battery Output
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Solution Overview
Problem
Existing battery power supply systems cannot adapt to the voltage demands of multiple loads, limiting their applicability due to a fixed range of output voltage.
Innovation Solution
A battery power supply device with a DC/DC conversion module comprising N DC/DC converters that can connect in series or parallel, controlled by a control module to adjust output voltage or current based on detected voltage or preset thresholds, enabling the device to meet the voltage requirements of different loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single DC/DC converter is used with a fixed output voltage range, then the device complexity is low, but the adaptability to different load voltage demands is poor
Solution Approach 1:
The power supply system is divided into multiple independent DC/DC converter modules, each capable of operating autonomously. This segmentation allows the system to adapt to different voltage requirements by selectively activating appropriate modules or changing their connection configuration, thereby improving adaptability without requiring a completely different system design for each load type.
Solution Approach 2:
The same set of DC/DC converters can serve multiple functions by changing their connection mode between series and parallel. This multi-functionality allows a single hardware configuration to adapt to different voltage and current requirements, eliminating the need for multiple dedicated converter sets and reducing overall device complexity.
2Adaptability or versatility
If the battery power supply is designed for a fixed voltage range, then the manufacturing precision is high, but the versatility across different battery types and loads is poor
Solution Approach 1:
The power supply system is designed with universal DC/DC converter modules that can operate with different battery types (lead-acid, lithium-ion, etc.) and serve different load requirements. The modular design with switchable series-parallel configurations allows a single manufactured unit to adapt to various applications, reducing the need for precision-tuned custom designs for each specific battery-load combination while maintaining high performance.
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 system can provide either higher output voltage when converters are connected in series or higher output current when connected in parallel, enhancing the adaptability and applicability of the battery power supply to various loads.
Implementation Method 1
a DC/DC conversion module (13), wherein the DC/DC conversion module (13) comprises N DC/DC converters (131)
Data Source
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AI summary
The present application provides a battery power supply device and a battery power supply system. The battery power supply device includes a control module (11), a DC/DC conversion module (13) and a battery (12). The DC/DC conversion module (13) includes N DC/DC converters (131) connected in series or in parallel. When the battery power is constant, more output current can be obtained when the N DC/DC converters (131) are in parallel, and more output voltage can be obtained when the N DC/DC converters (131) are in series. Embodiments enable a battery power supply device or system to meet voltage requirements of different loads and improve applicability of a battery (12).