Vehicle Traction Network Using DC/DC Converter for Inductive AC Charging
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Solution Overview
Problem
Current traction networks for vehicles face challenges in efficiently implementing inductive AC charging, particularly in terms of component complexity, space requirements, and costs, as they often require additional components for different charging functionalities.
Innovation Solution
A traction network configuration that includes a DC/DC converter arranged between a high-voltage battery and an inverter, with the DC/DC converter's phases connectable to center taps of half-bridges, allowing for both voltage level adjustment and inductive AC charging current rectification using existing components, thereby minimizing the number of components needed and reducing complexity and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional components are added to support inductive AC charging functionality, then charging functionality is improved, but device complexity increases
Solution Approach 1:
The DC/DC converter is designed to perform multiple functions: it serves as a voltage regulator for the high-voltage battery and simultaneously functions as a rectifier for inductive AC charging. By making the DC/DC converter universal, the patent eliminates the need for separate rectifier components, thereby reducing device complexity while maintaining enhanced charging functionality
Solution Approach 2:
The patent combines the rectifier function with the existing DC/DC converter by connecting the inductive AC charger phases to the center taps of the DC/DC converter's half-bridges. This merging of functions allows the same components to handle both voltage regulation and AC charging rectification, reducing the overall number of components needed
2Adaptability or versatility
If additional components are added to support inductive AC charging, then charging functionality is improved, but installation space increases
Solution Approach 1:
The DC/DC converter is designed to perform multiple functions: it serves as a voltage regulator for the high-voltage battery and simultaneously functions as a rectifier for inductive AC charging. By making the DC/DC converter universal, the patent eliminates the need for separate rectifier components, thereby reducing device complexity while maintaining enhanced charging functionality
Solution Approach 2:
The patent combines the rectifier function with the existing DC/DC converter by connecting the inductive AC charger phases to the center taps of the DC/DC converter's half-bridges. This merging of functions allows the same components to handle both voltage regulation and AC charging rectification, reducing the overall number of components needed
3Adaptability or versatility
If additional components are added to support inductive AC charging, then charging functionality is improved, but costs increase
Solution Approach 1:
The DC/DC converter is designed to perform multiple functions: it serves as a voltage regulator for the high-voltage battery and simultaneously functions as a rectifier for inductive AC charging. By making the DC/DC converter universal, the patent eliminates the need for separate rectifier components, thereby reducing device complexity while maintaining enhanced charging functionality
Solution Approach 2:
The patent combines the rectifier function with the existing DC/DC converter by connecting the inductive AC charger phases to the center taps of the DC/DC converter's half-bridges. This merging of functions allows the same components to handle both voltage regulation and AC charging rectification, reducing the overall number of components needed
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
This configuration enables efficient inductive AC charging while maintaining a constant number of components, reducing complexity, installation space, and costs, and allows for independent voltage level adjustment regardless of the battery's state of charge.
Implementation Method 1
use components of the DC/DC converter to rectify an (inductive) AC charging current for charging the high-voltage battery
Implementation Method 2
inductive AC charging
Data Source
AI summary
A traction network for a vehicle, which comprises at least one high-voltage battery, an inverter, an electric machine, and a DC/DC converter. The DC/DC converter being arranged between the at least one high-voltage battery and the inverter. The inverter being arranged between the DC/DC converter and the electric machine. The DC/DC converter being configured in such a way that at least one phase for an inductive AC charger connection is connectable to center taps of half-bridges of the DC/DC converter. A DC/DC converter for a traction network and a method for operating a traction network are also provided.