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Among the new energy technologies of pure electric vehicles, pure electric vehicles will get more support from the government, but there are also problems such as hard to find, endurance anxiety, power battery attenuation and so on. Hybrid technology has accumulated quite a lot of experience and mature technology since it was developed in the 1990s. Daily use does not worry about lack of endurance mileage and difficult to find charging piles and so on. When it comes to hybrid technology, the first thought should be Honda's i-mmd and its ths-ii. Why does the Japanese automobile industry focus on hybrid technology rather than pure electric technology? At the 2020 Honda media annual meeting, titanium media interviewed Yukio Hasegawa, former director of F1 technology project of Honda and now vice general manager of Honda technology research technology (China), who told titanium media: "oil and electricity have always been scarce resources in Japan, so why do we choose to develop hybrid technology? Because oil resources can rely on or be exploited by sea, we just need to Limited resources can play their maximum value, we return to F1 in 2015 is to collect data from the track to improve the hybrid technology. ". Why is Yukio Hasegawa, vice general manager of Honda Technology Research (China) not so active in development? According to Hasegawa, "on the one hand, the development is for daily travel and environmental protection. On the other hand, when encountering natural disasters, pure electric vehicles can be used for reverse power supply in daily life. At present, the reverse power transmission capacity of power batteries does not meet our requirements, so the research and development of pure electric vehicle technology is relatively conservative. Later, he added that for pure electric research and development of Honda It is also developing steadily. This year, it will launch a model with sport hybrid e + technology in China. ". From the perspective of naming, Honda sport hybrid e + is based on the upgrading of the third generation sport hybrid i-mmd light hybrid platform. In the analysis of sport hybrid Before e +, we have a brief understanding of the third generation of i-mmd. The whole system is composed of a 2.0L Atkinson cycle natural suction + small capacity and PCU power control unit + dual motors. The core technology of i-mmd is that one of the two motors equipped is responsible for generating power and the other motor is responsible for driving the vehicle. The third generation i-mmd hybrid technology the third generation i-mmd system is officially called "intelligent multi-mode drive". The system is equipped with internal combustion engine drive, hybrid drive and pure electric drive. When the vehicle is in the starting and low-speed stage, the system will drive the vehicle in pure electric mode. When the vehicle is accelerating rapidly and driving at medium and high speed, the system will actively switch to hybrid mode, and when cruising at high speed, the system will switch to internal combustion engine drive. Sport hybrid e + upgraded the dual motor system, VCU voltage control unit and PCU power control unit on the basis of sport hybrid i-mmd, and increased the battery power and capacitance in the IPU intelligent power unit. In the sport hybrid e + system, Honda optimized and upgraded the core dual motor of IPU intelligent power unit, from the round coil winding of sport hybrid i-mmd to the square coil winding, the change of coil winding shape reduced the motor volume and increased the motor torque density and power density by 1.3 times and 1.4 times compared with the round coil equipped in sport hybrid i-mmd. The IPU intelligent power unit sport hybrid e + uses the 17 kwh high-power, high-capacity lithium-ion battery provided by Panasonic to increase the endurance mileage under the pure electric mode to 160km. According to Honda officials, sport hybrid e + will use the NCM 811 three yuan lithium battery set after being listed in China this year. SPORT HYBRID e+SPORT HYBRID E + in addition to improving the power of voltage control unit in power control unit, increasing the endurance mileage in pure electric mode and reducing the volume of motor, Honda also provides high power. In addition, in order to improve the durability of battery, the integrated water-cooling device is equipped in the system to cool the battery pack, expand the scope of use of vehicle in pure electric mode and reduce the involvement of engine Frequency makes driving experience close to pure electric vehicle. In 2014, the power unit of F1 changed from the original V8 2.4 naturally aspirated engine to the V6 1.6T hybrid turbo engine. In terms of the arrangement and placement of power units, take Honda's 10th generation as an example, the power system is placed in the front engine compartment with the engine as the core, while the F1 racing car is placed in the rear of the vehicle. Because the body design pursues aerodynamics, the engine pod space will be much smaller than that of the civil vehicle, so the vertical layout is vertical. At present, the return of Honda to F1 with Honda power unit can be divided into the following two points. One is to improve the brand influence, because F1 is known as the world cup in the racing industry, and getting good results in this event can effectively improve brand awareness. The other is that part of the data collected on the track can improve the development of hybrid technology, and also to cope with Toyota's WEC (World Endurance Championship) the improvement of the hybrid technique. In 2015, Honda returned to F1 as a power system supplier and successively provided engines, mgu-k (kinetic energy recovery system), mgu-h (thermal energy recovery system), motors and batteries for the team and Red Bull team. Nowadays, the power of F1 racing car is not only provided by internal combustion engine, but also equipped with ers electric drive system. The power recovered by braking on the racing track is converted into electric energy. Part of the heat generated by the engine will be converted into electric energy and the other part of the heat will be discharged through the rear diffuser to reduce the heat in the engine pod and improve the electric energy conversion efficiency. How can Honda accumulate data to improve its hybrid system in F1? "Because the size of the power battery pack in F1 is smaller than our sport hybrid e + and sport hybrid," Hasegawa said I-mmd is equipped with battery pack, but its power and capacity are larger than the two hybrid systems we currently use in civil vehicles. We improve the power system through cooperation with Red Bull team. In this year's Austria station, we have upgraded the mgu-k and battery pack. Odili red bull ring track belongs to the type of high-speed track. The car will provide more battery pack after strong braking With more electricity, the car in the high-speed straight road will output the electricity in the battery pack to the car through the motor to provide additional power, which is similar to the hybrid technology we currently use in civil vehicles. " The electric vehicle has become a trend of future development driven by national policies. Because pure electric vehicles cannot be fully accepted by consumers at the current stage of development, and the car has been recognized by many consumers, Honda has completed its electric technology route layout by returning to F1 arena to accumulate technology and experience. And introduce domestic sport hybrid e + models this year, and more than 20 electric models will be launched in China by 2025. The introduction of multiple new cars and PHEV technology will not only accelerate Honda's layout of electric strategy, but also provide consumers with more diversified electric travel programs. (the first titanium media of this article, author / Yao Shengqi)