Electric Oil Pump Control Board Axial Layout
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Solution Overview
Problem
Conventional electric oil pumps face an issue of increased planar size due to the concentration of power supply input and output portions on one side of the control board, which limits the compact design and efficiency of the pump system.
Innovation Solution
The electric oil pump design includes a control board with power supply input and output portions positioned on opposite sides in the axial direction, allowing for a more balanced layout that avoids the concentration of these components on a single side, thereby reducing the overall size of the control board and improving connectivity and mounting efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If both the connector pin and the bus bar are electrically connected in the vicinity of the first side of the control board, then the electrical connection is simplified, but the planar size of the control board increases
Solution Approach 1:
The patent utilizes the axial direction (third dimension relative to the control board plane) to separate the positions of the connector pin and bus bar. The connector pin is positioned at the first side while the bus bar is positioned at the other side, with wiring extending through the axial depth of the control board. This dimensional approach allows electrical connections to be distributed in three-dimensional space rather than concentrated on a single plane, thereby reducing the planar size requirement while maintaining connection simplicity.
2Ease of manufacture
If the power supply input portion and power supply output portion are concentrated on one side of the control board, then the wiring layout is simplified, but the control board size increases
Solution Approach 1:
The patent distributes power supply components along the axial direction of the control board rather than concentrating them on one side of the planar surface. The power supply input portion and output portion are positioned at different axial locations, allowing wiring to traverse the thickness of the board. This reduces the required planar area while keeping the wiring layout manageable through vertical routing paths.
Solution Approach 2:
The power supply system is segmented into distinct input and output portions positioned at different locations along the axial direction. This segmentation allows each portion to be independently optimized and connected to different functional areas of the control board, reducing the need for concentrated power routing on a single side and thereby reducing overall board size.
3Ease of operation
If the bus bar terminal is disposed on the front side of the main body portion, then the connectivity to the pump is improved, but the control board size increases
Solution Approach 1:
The bus bar terminal is positioned on the front side of the main body portion at a location that optimizes connectivity to the pump, while the control board utilizes its axial depth to accommodate this positioning without increasing planar size. The terminal is placed at the axial extremity closest to the pump, allowing direct connection paths while keeping the control board's footprint compact.
Data Source
AI summary
In an electric oil pump, a motor includes a main body including a coil, bus bars electrically connected to lead wires of the coil, and a shaft including a portion on one side in an axial direction protruding from an end of the main body on the one side in the axial direction and connected to a pump, a control board includes a power supply input portion and a power supply output portion and is disposed in a posture in which any one of a first surface and a second surface of the control board lies in the axial direction, the power supply input portion is at an end portion of the control board on the other side in the axial direction, and bus bar terminals are disposed on one side of the main body in the axial direction.