Transformer Power Circuit for Battery Feedback and Motor Charging
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Solution Overview
Problem
Current power management systems for electric auxiliary vehicles increase design costs due to the use of different power converters for charging and power feedback mechanisms.
Innovation Solution
A power management circuit that includes a transformer, primary and secondary power transmission circuits, and a controller, enabling multiple power transmission functions such as feeding back battery power to a power receiving terminal and using motor power to charge the battery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different power converters are used for charging mechanism and power feedback mechanism, then the charging and power feedback functions can be independently implemented, but the design cost increases
Solution Approach 1:
The patent combines the charging mechanism and power feedback mechanism into a single power management circuit that shares common components (transformer, controller, power transmission circuits). This merging reduces the overall component count and design complexity while maintaining both charging and power feedback functionalities through different operating modes of the same circuit.
Solution Approach 2:
The power management circuit is designed to perform multiple functions: it can operate as a charging circuit when external power is supplied, and as a power feedback circuit when battery power needs to be transmitted back. The same transformer and power transmission circuits serve both purposes by switching between different operating modes, eliminating the need for separate dedicated converters.
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 power management circuit reduces design costs by integrating multiple power transmission functions into a single circuit, enhancing the endurance of electric auxiliary vehicles by efficiently charging the battery using motor power.
Implementation Method 1
The transformer includes a primary winding and a secondary winding. The primary circuit is electrically connected to the primary winding... The first power transmission circuit is electrically connected to the secondary winding...
Data Source
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AI summary
Disclosed is a power management circuit (100) for an electric auxiliary vehicle (10) including a battery (BT), a motor (MT), and a power receiving terminal (TC). The power management circuit includes a transformer (TR), a primary circuit (110), first (120) and second power transmission circuits (130), and a controller (140). The transformer includes primary (LP) and secondary windings (LS). The primary circuit (110) is connected to primary winding and power receiving terminal. The first power transmission circuit is connected to secondary winding and battery. The second power transmission circuit is connected to secondary winding, battery, and motor. The controller controls primary circuit and first power transmission circuit to provide battery power (PB) of battery to power receiving terminal in a first operating mode. The controller controls second power transmission circuit in a second operating mode, so that second power transmission circuit uses power of motor (PM) to charge the battery.