Integrated Oil Pump Controller Layout for Compact Power Converters
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Solution Overview
Problem
Conventional electric oil pumps have a large controller housing that occupies a significant area, degrading the packageability of transmissions and vehicles due to the size of the controller components.
Innovation Solution
A power converter integrates an oil pump controller into a control unit, reducing the number of components and allowing for direct control of the pump motor, while using a water-cooled cooling system and ensuring insulation between voltage regions with an insulator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the controller is provided with a housing, control board, and control elements, then the control function is achieved, but the oil pump occupies an absolutely large area
Solution Approach 1:
The patent integrates the oil pump controller into the transmission control unit by mounting the controller directly on the control board of the power converter. This merging of functions eliminates the need for a separate controller housing and reduces the overall occupied area in the transmission package.
2Ease of operation
If the controller includes housing and control elements, then control capability is provided, but packageability of transmission and vehicle is degraded
Solution Approach 1:
The controller is integrated into the existing transmission control structure by mounting it on the power converter control board, allowing the system to maintain full control capability while significantly improving packageability and adaptability to different vehicle platforms.
3Ease of operation
If the oil pump controller is mounted separately, then control function is achieved, but the number of components increases
Solution Approach 1:
The patent reduces device complexity by integrating the oil pump controller into the power converter control unit, eliminating separate controller housings and mounting structures. This merging reduces the total number of components while maintaining all necessary control functions.
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 integration increases the degree of freedom in package, reduces cost and weight, enhances control precision, and improves cooling efficiency of the oil pump.
Implementation Method 1
a power conversion module configured to receive direct current (DC) power to convert the DC power into alternating current (AC) power and to output the converted AC power to a drive motor
Implementation Method 2
an insulator formed between the first region and the second region of the control board to form a separation distance between the main controller and the oil pump controller
Implementation Method 3
control actuation of an oil pump for generating hydraulic pressure in a transmission
Data Source
AI summary
Disclosed herein is a power converter for integrated control of electric oil pumps, which includes a power conversion module configured to receive a direct current voltage to convert the same into an alternating current voltage and to output the converted alternating current voltage to a drive motor, and a control unit configured to control the power conversion module and to control actuation of an oil pump for generating hydraulic pressure in a transmission. The control unit includes a control board, a main controller installed in a partial region of the control board to supply power to the drive motor and to control the power conversion module, and an oil pump controller installed in a remaining region other than the partial region, connected to the main controller, and configured to supply power to a pump motor for actuating the oil pump and to control the oil pump.