Electronic control unit acceptable for fuel cell power assembly control

Abstract

An electronic control unit suitable for fuel cell powertrain control, the control unit includes a hardware platform and a software platform. The hardware platform includes a digital core module using Motorola68MC376 single-chip microcomputer, a signal processing module with rich input and output ports, and a communication module with serial communication and CAN communication capabilities; the software platform includes a multi-tasking system designed with a real-time operating system and an in-system programming submodule that depends on the hardware implementation. The invention can meet the requirements of the fuel cell powertrain control system with large measurement quantity and high measurement accuracy, large control quantity and high control precision; it can be used in conjunction with various fuel cell powertrain control algorithms. Due to the above hardware and software capabilities, the control unit can be used as a complete fuel cell powertrain system controller in conjunction with the control algorithm to effectively control the fuel cell powertrain system.

Description

technical field [0001] The invention relates to an electronic controller, in particular to an electronic control unit suitable for power assembly control of a fuel cell hybrid electric vehicle, and belongs to the technical field of vehicle electronic control. Background technique [0002] Fuel cell hybrid electric vehicle is a new type of power vehicle, and its powertrain control system has a complex distributed control structure and harsh electromagnetic environment. [0003] The fuel cell electric vehicle powertrain control network is a distributed control system formed around the CAN bus network. In this system, the powertrain electronic control unit (ECU) communicates with the fuel cell controller and the main DC-DC respectively through the CAN bus network. The converter controller, battery controller and motor controller are connected to form a distributed control network; the powertrain electronic control unit (hereinafter referred to as ECU) is at the core of the dist...

AI Technical Summary

Problems solved by technology

At present, most of the existing ECU hardware is designed and implemented for traditional diesel engines or gasoline engines, and cannot be directly used for fuel cell hybrid electric vehicles.

In addition, the old-style ECU has the following problems in varying degrees in terms of hardware: In the system core, the processing capability of the microcontroller chip of the ECU cannot meet the needs of the new generation of control, and the storage space expanded for the ECU cannot meet the requirements of data storage; In terms of functional modules, the input and output ports of the ECU are not rich enough to meet the complex application requirements of the controller; in the communication link, there is no communication module supporting CAN2.0B, which cannot meet the basic capabilities of the nodes of the distributed control network; In terms of overall design, it does not have a strong electromagnetic compatibility quality, and cannot meet the more complex and harsh electromagnetic environment of electric vehicle on-board control sites

At the same time, because the ECU software must be designed in accordance with the structure and specific conditions of the ECU, it is impossible to directly use the previous ECU software.

[0006] To sum up, the existing ECU cannot be directly applied to the powertrain control of fuel cell hybrid electric vehicles

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