EV Power Distribution Common Line Noise Suppression
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Solution Overview
Problem
Existing electric power distribution apparatuses in electric vehicles face challenges in effectively suppressing electromagnetic noise, which can interfere with the power supply and affect the performance of in-vehicle electrical devices.
Innovation Solution
The proposed electric power distribution apparatus incorporates a common conductive member connected to a power source connector and branched conductive members, with a noise reduction element placed on the common conductive member to suppress electromagnetic noise, reducing the number of noise reduction elements required compared to having them on each branched member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If noise reduction elements are disposed on each branched conductive member, then electromagnetic noise suppression is improved, but the number of elements and device complexity increases
Solution Approach 1:
The patent merges multiple noise reduction functions into a single noise reduction element disposed on the common conductive member. This single element suppresses electromagnetic noise across all branched conductive members simultaneously, replacing the need for multiple separate noise reduction elements on each branch, thereby reducing device complexity while maintaining effective noise suppression.
2Object-affected harmful factors
If noise reduction elements are disposed on each branched conductive member, then electromagnetic noise suppression is improved, but manufacturing cost increases
Solution Approach 1:
The patent combines multiple noise reduction functions into a single noise reduction element on the common conductive member. This reduces the total number of components that need to be manufactured, procured, and installed, thereby lowering manufacturing costs while still achieving effective electromagnetic noise suppression across all power distribution branches.
3Device complexity
If a single noise reduction element is disposed on the common conductive member, then device complexity is reduced, but noise suppression effectiveness may be compromised
Solution Approach 1:
The noise reduction element on the common conductive member is designed to perform multiple noise suppression functions simultaneously for all branched conductive members. By positioning it on the common conductor that feeds all branches, a single element can suppress noise across the entire power distribution network, achieving universal noise reduction without requiring multiple specialized elements.
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 effectively suppresses electromagnetic noise at the common conductive member, preventing its entry into the in-vehicle power source and reducing the complexity and cost of noise reduction by minimizing the number of elements needed, thereby enhancing the reliability and efficiency of the power distribution system.
Implementation Method 1
a noise reduction element provided on a common conductive member... the electromagnetic noise is suppressed at the common conductive member
Data Source
AI summary
A positive common line and a negative common line are connected to a power source connector connected to a battery pack. First filters are provided on these two common lines, respectively. The positive common line is branched into a positive front line and a positive rear line. The negative common line is branched into a negative front line and a negative rear line. These two front lines are connected to a front power connector that is connected to a front power control unit. These two rear lines are connected to a rear power connector that is connected to a rear power control unit. It is possible to suppress electromagnetic noise on common lines.