Multi-Output Power Conversion With Integrated 12V/48V Support
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Solution Overview
Problem
Conventional power conversion systems in eco-friendly vehicles face challenges with increased size, weight, and complexity due to multiple outputs and the need for auxiliary batteries, leading to reduced fuel efficiency and voltage control issues.
Innovation Solution
A multi-output power conversion apparatus and method that integrates an auxiliary battery, utilizing a high voltage converter and a low voltage conversion module with an integrated converter and energy storage element, capable of converting power to multiple outputs with different power consumption magnitudes, and includes a buck booster type converter and active clamp-forward type converter to improve efficiency and reduce weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple auxiliary batteries are mounted for 12V and 48V electric part loads, then the system can respond to different voltage requirements, but the overall weight and size of the system increase significantly
Solution Approach 1:
The patent merges the 12V and 48V auxiliary battery systems into a single integrated power conversion apparatus. The high voltage battery (400V or 800V) serves as a unified energy source that converts power to multiple low voltage outputs (12V and 48V) through an integrated converter, eliminating the need for separate auxiliary batteries and reducing overall system weight while maintaining the ability to respond to different voltage requirements.
Solution Approach 2:
The integrated power conversion apparatus performs multiple functions: it converts high voltage battery power to both 12V and 48V outputs, charges the high voltage battery from external sources, and manages power distribution to various electric part loads. This multi-functional design replaces multiple separate battery systems with a single universal power management solution.
2Adaptability or versatility
If separate auxiliary batteries are used for 12V and 48V loads, then each voltage level can be independently supported, but the system complexity and control difficulty increase
Solution Approach 1:
The patent combines multiple power conversion functions into a single integrated converter that handles both 12V and 48V output generation. This unified architecture reduces the number of separate components and control systems needed, thereby reducing overall system complexity while maintaining the capability to independently support different voltage levels through coordinated control of the integrated converter.
3Reliability
If conventional separate battery systems are used, then reliable power supply to electric part loads is ensured, but fuel efficiency decreases due to increased vehicle weight
Solution Approach 1:
The patent merges separate battery systems into a single high voltage battery with an integrated power conversion apparatus, significantly reducing vehicle weight. This weight reduction directly improves fuel efficiency while the integrated system maintains reliable power supply to all electric part loads through coordinated power conversion and distribution management.
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 reduces the size and weight of the system, improves power conversion efficiency, and enables broader voltage control, including intermediate levels, while minimizing magnetic body loss and material costs.
Implementation Method 1
a high voltage converter configured to convert the first power into the second power smaller or lower than the first power
Implementation Method 2
a low voltage conversion module configured to convert the second power into the third power equal to or smaller or lower than the second power
Implementation Method 3
an energy storage element configured to store the third power as backup or to supply the stored third power to the plurality of electric part loads
Data Source
AI summary
A multi-output power conversion apparatus capable of integrally operating an auxiliary battery includes a high voltage battery configured to output a first power and a power conversion unit. The power conversion unit is configured to convert the first power into a second power and to convert the second power into a third power with multiple outputs to supply it to each of a plurality of electric part loads with different power consumption magnitudes.