Integrated Inverter Control Board for Park and Differential Lock
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Solution Overview
Problem
The traditional distributed design of inverter, park lock controller, and differential lock controller in vehicles increases layout space, costs, and failure risk due to multiple manufacturers and low safety levels.
Innovation Solution
An inverter integrating park lock and differential lock controllers with a shared microprocessor for closed-loop control, reducing the number of microprocessors and adding feedback control loops for improved stability and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If distributed controllers (inverter, park lock controller, differential lock controller) are used, then each controller can be supplied by different manufacturers, but the layout space increases, costs increase, and failure risk increases
Solution Approach 1:
The patent combines the inverter controller, park lock controller, and differential lock controller into a single integrated control unit. This merging eliminates the need for multiple separate controllers, reducing layout space and component count while maintaining the ability to work with different manufacturers through standardized communication protocols and modular design
2Adaptability or versatility
If distributed controllers are used, then each controller can be supplied by different manufacturers, but hardware costs increase
Solution Approach 1:
The patent integrates multiple control functions into a single controller unit, reducing hardware costs by eliminating redundant components such as multiple microprocessors, memory units, and communication interfaces. The integrated design allows for economies of scale and reduced assembly complexity while maintaining manufacturer flexibility through standardized interfaces
3Adaptability or versatility
If distributed controllers are used, then each controller can be supplied by different manufacturers, but development difficulty increases
Solution Approach 1:
The patent consolidates multiple control functions into a single integrated controller, simplifying development by reducing the number of interfaces, communication protocols, and coordination requirements between multiple manufacturers. The unified design allows for centralized testing, debugging, and validation while maintaining flexibility through modular architecture and standardized communication interfaces
4Adaptability or versatility
If distributed controllers are used, then each controller can be supplied by different manufacturers, but safety level decreases and failure risk increases
Solution Approach 1:
The patent integrates multiple control functions into a single controller with unified safety management, reducing failure risk by eliminating communication interfaces and coordination points between multiple controllers. The integrated design allows for centralized monitoring, consistent safety protocols, and reduced points of failure while maintaining manufacturer flexibility through modular design and standardized interfaces
5Ease of operation
If multiple microprocessors are used in distributed controllers, then each controller can function independently, but the number of microprocessors increases
Solution Approach 1:
The patent employs a single multi-functional microprocessor that can execute different control algorithms for the inverter, park lock, and differential lock functions. This universal controller maintains operational independence of each function through software-based control while reducing the total number of microprocessors from three to one, thereby simplifying the system architecture
Data Source
AI summary
An inverter is disclosed. The inverter comprises a housing and a control board provided inside the housing. By integrating the park lock control unit, the differential lock control unit and the motor control unit into the control board and controlling them with a same microprocessor, the layout space and hardware cost of the entire vehicle are saved. By adding a control loop between the position feedback acquisition and the park lock control unit, the closed-loop control of the parking function is realized. By adding a control loop between the state feedback acquisition and the differential lock control unit, the closed-loop control of the differential lock function is realized. In this way, the technical effects of sharing hardware resources, improving stability, and reducing failure rate are achieved.