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| Huahai assisted VinFast passenger car development project to |
In December 2019, VinFast, the largest automobile manufacturer in Vietnam, and Huahai signed a VCU development project for C-SUV models. In these short months, the Huahai technical team and the VinFsat technical team worked together remotely and finally completed the commissioning and release of the prototype according to the planned time.
On May 28th, on the city streets of Vingroup in Hanoi, VinFast experts and chiefs conducted a test drive of the prototype, and the test drive was highly praised.
Camouflage car in test drive
Sample car release
During this research and development process, Huahai Technology provided the complete vehicle controller hardware, bottom layer and application layer software, completed the system scheme design, software function realization and unit testing, software and hardware integration and testing, and remote assistance to complete the road test and Real vehicle calibration; the whole vehicle realizes the functions of high voltage power on and off, torque management, mode management, energy management, thermal management, fault diagnosis and protection, and at the same time, it also realizes the national standard AC and DC charging functions.
The controller development process adopts a model-based V-shaped development mode, and uses MATLAB/Simulink/Stateflow/ECUCoder graphical modeling methods to establish software projects, completely zero manual one-click automatic code generation, and application software (ASW) can be completed at the same time And basic software (BSW) model automatic code generation, ECUCoder is an automatic code generation tool based on Simulink, used to configure ECU control algorithm model and basic software model, and automatically generate product code. Support mainstream chips for automotive electronic control systems from well-known manufacturers such as Freescale, Infineon, and ST. ECUCoder provides a powerful basic software Simulink module library, which can conveniently and intuitively configure basic software parameters through a friendly user interface and automatically generate basic software codes from Simulink models. Because the software can flexibly and deeply access and configure basic software parameters, the basic software code generated by the model can support the two stages of controller rapid prototyping and product development.
The core value of ECUCoder is to shorten the development time of several months of controller basic software to several hours.
Main features of ECUCoder
• Automatic code generation of basic software and application software at the same time, without manual integration;
• The model automatically optimizes the configuration, no need to manually set Simulink configuration parameters;
• Powerful GUI interface, which can directly access and configure the entire basic software from the model;
• The compiler is automatically invoked in the background without manual intervention;
• Reliable code, good compromise between code readability and execution efficiency;
• Support the latest generation of multi-core processors that meet the ISO26262 standard, and support user-developed controller hardware.
The vehicle controller hardware U3B provided by Huahai Technology is a new generation of mass-produced electronic control unit, which supports the rapid prototyping and batch matching of controllers such as battery management system BMS and vehicle controller VCU. RapidECU-U3B is the third-generation product of Huahai Technology’s 32-bit automotive controller. The definition, design and verification of the entire product are carried out in accordance with the ISO26262 standard.
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Basic parameters |
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Micro controller |
MPC5744P,32-bit,frequency 160MHz,hardware floating point unit,ISO26262 |
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SRAM 384KB,Flash 2.5MB,EEPROM 64Kb |
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Power supply |
Power supply voltage: 9V~32V, 3-channels wake-up signal, ignition key, DC charging A+, AC charging CP |
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6-channels 5V sensor power supply |
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Input |
9 analog inputs, 7 voltage inputs (active sensor), 2 resistance inputs (passive sensor) |
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14-channels switch input, 7-channels high effective, 7-channels low effective |
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Ac charging interface, CP, CC, internal S2 switch, in line with relevant requirements of GB/T 20234.2-2015 |
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Dc charging interfaces, S+, S-, A+, A-, CC2, meet the relevant requirements of GB/T 20234.3-2015 |
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1-channel frequency input, support Hall type sensor signal (square wave signal) |
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Output |
8-channels high side drive, integrated hardware channel protection and diagnosis functions, among which 4-channels with current feedback |
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6-channels low edge driver, integrated hardware channel protection and diagnostic functions |
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1-channel H-bridge power drive output, rated 2A, integrated hardware channel protection function, with current feedback |
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2-channels OF PWM output, including 1-channel and low-side drive multiplexing pin, 1-channel and high-side drive multiplexing pin |
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Communication |
CAN,4-channels,CAN2.0B,ISO11898 |
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LIN,1-channel host |
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Environment |
Protection class: IP67, working temperature: -40℃~+85℃, weight about 400g
The protection of climate and environment conforms to ISO16750-4 and the protection of chemical environment conforms to ISO16750-5
Vibration, impact and drop tests conform to ISO16750-3 |
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EMC features |
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ESD |
Air ELECTROSTATIC discharge test and contact electrostatic discharge test meet the relevant requirements of ISO 10605-2008 |
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BCI |
Electromagnetic radiation immunity conforms to the relevant requirements of GB/T 17619-1998 |
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CE |
The related requirements of conducting disturbance are in line with 2008f GB/T 18655-2010 |
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RE |
Radiation harassment complies with the relevant requirements of GB/T 18655-2010 |
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CI |
The transient conduction immunity along the power line conforms to the relevant requirements of ISO 7637-2:2004 |
Through this cooperation, it is not only conducive to the establishment of a sustained and stable cooperative relationship, but also more conducive to the long-term development of the two companies. We firmly believe that the long-sleeved dance of Huahai and VinFast in their respective fields will definitely bring more surprises to each other's cooperation and development And possible.
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