High-Voltage Balancing Circuit for Lower-Voltage Components
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High voltage systems, particularly in electric vehicles and aircraft, require components designed for high voltages, leading to increased complexity and cost, and it is desirable to use lower voltage-rated components safely without altering the system's operating voltage.
Innovation Solution
A balancing and measuring circuit is implemented with capacitors and resistive elements to equalize voltages and measure impedances, allowing the use of lower voltage-rated components by reducing isolation barrier voltage and managing leakage, thus extending component lifespan and improving system efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high voltage-rated components are used in high voltage systems, then system safety and reliability are improved, but component size, cost, and assembly difficulty increase
Solution Approach 1:
The patent introduces a voltage balancing circuit with resistive elements and switching elements as an intermediary mechanism. This circuit actively manages voltage distribution across capacitors, allowing lower voltage-rated components to operate safely in high voltage environments by dynamically controlling voltage exposure through the intermediary balancing circuitry.
Solution Approach 2:
The patent changes the voltage parameter experienced by components through active control. By using switching elements to dynamically connect and disconnect capacitors from high voltage lines, and resistive elements to control voltage division, the actual voltage parameter across individual components is reduced below their rating thresholds, enabling the use of smaller, lower-voltage components.
2Reliability
If high voltage-rated components are used in high voltage systems, then system reliability is improved, but manufacturing cost and assembly difficulty increase
Solution Approach 1:
The voltage balancing circuit acts as an intermediary that enables the use of standard lower voltage components in high voltage systems. This intermediary control mechanism simplifies manufacturing by allowing assembly of components with lower voltage ratings, which are more readily available and easier to handle, while still ensuring system reliability through active voltage management.
Solution Approach 2:
By dynamically changing the voltage parameter across components through controlled switching and resistive division, the patent enables use of components designed for lower voltage environments. This parameter control makes assembly easier as components with lower voltage ratings are mechanically smaller, more standardized, and require less stringent handling procedures.
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 enables the safe use of lower voltage-rated components, reducing component size, cost, and assembly difficulty while increasing system efficiency and reliability.
Implementation Method 1
a resistive element; a switching element; wherein the resistive element and the switching element are connected in series
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present disclosure relates generally to high voltage systems. In one embodiment, a balancing and measuring circuit is disclosed, comprising: a first capacitor electrically coupled between a first voltage and a chassis voltage, wherein the first voltage is greater than the chassis voltage; a second capacitor electrically coupled between a second voltage and the chassis voltage, wherein the second voltage is less than the chassis voltage; a first circuit associated with the first capacitor; and a second circuit associated with the second capacitor, wherein the first circuit and the second circuit each comprise: a resistive element; a switching element; a voltage circuit configured to generate a reference voltage; and a controller configured to monitor a voltage of a reference capacitor and to control the switching element based on the monitored voltage, wherein the resistive element and the switching element are connected in series.