BYD car as a new energy vehicle leader, has always led the development of new energy vehicles in the world, as of this year, its new energy vehicle accumulated sales will exceed 1 million, becoming the world’s largest new energy vehicle manufacturer. Since its new energy car flagship model, Handu has risen since the listing, but also sold over 10 consecutive months, which has become a large-scale holiday, which is the only monthly sales of China’s autonomous brands. BYD’s new energy car is not only ahead of sales, but also leads in technology. Since the global starting blade battery last year, the world will start another core technology MDSH; DTCs. On March 30th, BYD and Bosch held a DTCS distributed traction control system conference in Bosch (Donghai) Automotive Test Center, and its joint development of DTCs was equipped in Han EV four-wheel drive. The torque control time of the Han EV quad-driven version of DTCs has accelerated by 20 times, and the torque response is 10 times, which can minimize wheel slip, greatly improve the safety, efficiency of the Han EV four-wheel drive. , Handling and comfort.
Everyone knows that when the vehicle starts or accelerates in the ice and snow road, there is a phenomenon that slippery is out of control due to the adhesion of the wheel and the ground. Solving this problem, the TCS is successful, TCS has the full name of the TRACTION Control System, called the traction control system, also known as the tracking and control system. It is determined according to the revolution of the drive wheel and the rotation of the drive wheel, and when the drive wheel occurs, when the current is greater than the latter, thereby suppressing a non-slip control system of the drive wheel speed. It is very similar to the ABS mode mode, both use sensors and brake regulators. The principle of action is when the TCS senses the wheel slip, first pass through the engine to change the time of the engine ignition, reduce the engine torque output or apply a brake on the wheel to prevent the wheel slip, if the slip is very serious In terms of the control engine oil supply system. When the TCS is used, the gearbox will maintain a high gear. When the throttle is aggravated, it will avoid suddenness to avoid slipping. TCS has a great help to the stability of the car. When the car is driving on the easy road, there is no TCS car, drive when acceleratingThe wheel is easy to slip, if it is a rear wheel, it will cause a tail. If it is a front wheel, the car is easily out of control, causing the car to one side, and the car can avoid or alleviate this Phenomenon, keep the car travel in the correct direction.
Torque Response cycle speeds up to 10 ms, DTCs make it basically not slided into LDQUO; instinct RDQUO; 
from above We can see that TCS is mainly developed for fuel vehicles. Early new energy vehicles can only use this technology, but due to different ways of new energy vehicles and fuel vehicles, the application of TCS in new energy vehicles is not Perfect, with the rapid development of China’s new energy automotive industry, based on the advanced motor control technology of BYD, the company’s leading chassis control technology, the distributed driving force control system DTCs developed by new energy vehicles, the electric drive advantage is played At the same time, the working efficiency of the drive torque response has also increased several times.
DTCs (Distributed TCS) is a driving force control system created for new energy vehicles. Traditional TCS will be controlled in ESPREG; body electronic stability system or IPB integration In the brake system, by torque control by signal interaction with the power system, DTCs move the traction control system to the motor controller, which is directly determined by the motor controller, and the tire slip is controlled.
Torque transmission route and response closed loop time change
The upper shift of the control system shortens the torque transmission route, enhances the response speed, first, control the cycle time Quick 20 times, up to 1ms from 20ms to 1 ms, so that the control system operation cycle can delay the big dynamic changes to the wheel, reduce the anti-sense of the user’s acceleration; secondly, the control is greatly shortened by the signal interaction time The torque response cycle time is 100 ms to 10 ms, which is 10 times, and the signal transmission speed makes the response more rapidly, and the system control efficiency is improved, and the wheel sliding amount is reduced to ensure the safety of the vehicle.
Han EV four-wheel drive version of the world’s first, comprehensive improvement of the safety, efficiency, handling and comfort
As the first model with DTCS, Han EV four-wheel drive The version of the motor response DTCS torque request is about 10 times, which reduces the sliding amount of the tire sliding. At the same time, DTCs also realize multi-dimensional safety improvement in terms of vehicle performance, which brings more secure driving experience.
DTCS will cause the tire to start with the low wall, can always ensure sufficient tire grip, improve the acceleration performance of the vehicle under low access conditions, Therefore, the Han EV four-wheel drive version of the DTCS will be shortened in the low wall acceleration time. The test results show that the Han EV four-wheel drive version is accelerated on the ice. The acceleration time accelerates 2s, and the three-footed 0-60km / h acceleration time accelerates about 0.8 s, which is faster and more stable. By the low wall, the safety of the vehicle is guaranteed.
At the same time, DTCs can instantaneously reduce tire skid, so that the vehicle can reduce the possibility of dangerous conditions such as body instability when the vehicle is turned around. The driving control of the vehicle under low access road conditions. The test score shows that the Han EV four-wheel drive version can increase the maximum controllable fiber speed of the low adheres to approximately 5-10km / h, the speed controlled range of the vehicle is large, and the safety of the vehicle is more secure.
Furthermore, DTCs reduce the dynamic changes of the wheels brought by the signal transmission delay by reducing the torque signal transmission, reducing the feeling of the user accelerated, so that the driving will become safer and comfortable. What is worth looking forward is that the addition of DTCS functions does not require hardware input, and the Han EV electricity four-wheel drive users can complete OTA upgrade. 
Union Bosch’s efforts to create, BYD is the industry security tree pioneer
Strong union, BYD and Bosch have been develop and develop through 4 years. In the extremely cold environment, the Han EV four-wheel drive version of DTCs is used for ice, snow, and the road surface, ring, control channel, etc., etc., to simulate the complexity of users in different regions.The use of the car scene ensures the reliability of the technology. The cooperation is that after the IPB intelligent integrated brake system, the BYD and Bosch strategic cooperation have a major technical breakthrough. At the same time, DTCS’s global starting marks a major advancement in the safety technology in domestic electric vehicles, and has important significance to promote the development of the industry. 
End: As a new energy vehicle leader, BYD is not only in sales, but also attaches great importance to the research and development of new energy vehicle technology. Many years of development, BYD has accumulated a large number of new energy core technologies. Today, BYD has a world leading battery, motor, electric control, and vehicle core technology, and realizes multiple spans in power performance, safety protection and energy consumption. It is no wonder that the world’s largest automotive manufacturer Toyota has taken the initiative to find a new energy vehicle, using BYD’s technology to develop pure tram type, it seems that the technical strength of BYD in new energy cars is really ldquo; blowing rdquo; 
