Motor-Pump Unit PCB Segmentation for Multi-Voltage Adaptation
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Solution Overview
Problem
Existing motor-pump units in vehicles are not adaptable to different electrical systems with varying voltage levels, requiring significant effort to modify or replace components, which increases costs and complexity.
Innovation Solution
A motor-pump unit with a dual-circuit board design, where the power board is configured for high-voltage levels and the signal board for low-voltage levels, allowing easy adaptation to different electrical systems by replacing only the power board, and integrating both boards within a sealed housing to minimize electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a motor-pump unit is designed with integrated power electronics for a specific voltage level, then the unit provides optimized performance for that voltage level, but the unit cannot be adapted to different electrical systems without significant modification effort
Solution Approach 1:
The electronic unit is divided into two separate circuit boards: a power board containing all power electronics components (DC/DC converter, motor controller) and a signal board containing control electronics. This segmentation allows the power board to be replaced independently when adapting to different voltage levels, while the signal board and motor-pump group remain unchanged.
Solution Approach 2:
The signal board is designed with universal control functionality that can work with different power board configurations. The motor-pump group serves multiple functions (pumping hydraulic fluid and generating electrical energy) and can be controlled across different voltage systems through the adaptable electronic unit design.
2Adaptability or versatility
If the entire electronic unit is replaced to adapt to different voltage levels, then the adapted unit works correctly with the new electrical system, but the costs and complexity increase significantly
Solution Approach 1:
The electronic unit is segmented into replaceable power board modules designed for different voltage levels (e.g., 12V, 24V, 48V). Only the power board needs to be replaced when adapting to a new voltage system, while the signal board and mechanical components remain in place, significantly reducing modification effort.
Solution Approach 2:
The power board is designed as a parameterizable module where only the voltage-related parameters need to be changed by replacing the board itself, rather than modifying the entire electronic unit. This allows easy adaptation to different voltage levels through simple component replacement.
3Ease of operation
If power electronics components are distributed across the entire electronic unit, then the unit provides comprehensive control functionality, but adapting to different voltage levels requires modifying the entire unit
Solution Approach 1:
All power electronics components (DC/DC converter, motor controller, power switches) are concentrated on the power board, which is electrically connected to the signal board. This segmentation isolates the voltage-specific components from the control logic, allowing the power board to be replaced without affecting control functionality.
Solution Approach 2:
The signal board acts as an intermediary between the replaceable power board and the motor-pump group. It provides universal control signals and receives feedback regardless of which power board is installed, enabling easy adaptation while maintaining comprehensive control functionality.
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
Facilitates easy adaptation to different voltage levels by minimizing component changes, reduces costs through modular design, and enhances electromagnetic compatibility and heat dissipation, while reducing the need for additional control units and wiring.
Implementation Method 1
an electric motor or electric motor generator for driving the hydraulic pump
Implementation Method 2
a hydraulic pump and an electric motor or electric motor generator for driving the hydraulic pump
Implementation Method 3
which can optionally also drive this motor as an electric generator or electric motor generator (recuperation mode)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a motor-pump unit (1) for providing hydraulic energy, in particular in a chassis system (50) of a vehicle, wherein an electronic unit (10) comprises a power board (12) with power electronics and a preferably structurally separate signal board (11).