In the field of mixing, there is a word for a long time: there are only two mixed mixes in this world, one is Toyota, the other is other.
If you come from a Toyota owner’s mouth, you may have a smile, but if you have a self-developed senior R & D supervisor to speak this sentence in public, the feeling is big. .
Recently, on a technological salon held in Chery, Qirui Mother Transmission and Mixed R & D, the Deputy Director of Qirui Mr. Zhou Guang, who was responsible for the Qi Rui Mixed R & D, used this sentence to express their respect for Toyota mixed technology. At the same time, we will not be curious about us under the stage:
Chery is preparing to have a hard Toyota in the mixed field?
Toyota mixed: a major mountain
in this DHT (mixed special transmission) technology is at the technical sharing of the core content, Zhou Zhi’s doctors came, unveiled the more technical veil of Chery DHT, and in this Toyota mixed famous, he thought The expression is actually very clear: Chery DHT At the beginning of R & D, the target is the Toyota’s hybrid system.
This is not an easy thing.
If you have seen Toyota’s advertisement, it will be impressive to the “car to the mountain”, but if you are a R & D staff like Zhou, you may find that in mixing In the field, there is really not necessarily road before the car to the mountain, because Toyota is the mountain.
From 1997, Puruis, Toyota, which is based on THS hybrid system, has become the same as the existence of mixed domain in more than 20 years.
On sales, mixed models globally accumulated 15 million sales achievements universal enemy.
On the product, Toyota’s mixed model, not only the fuel consumption is ultra-low, but the urban area is more than 4 liters, almost half of the ordinary fuel truck, and the smoothness is extremely smooth, and the oil-electric switching is smooth. Many people impress Toyota mixed acceleration, this is actually misunderstanding, as long as the stronger motor and electricityThe acceleration performance of the pool, THS is also believers, such as the latest Wanta Phev, 100 kilometers acceleration reached 6.6 seconds.
On the brand, more than ten years ago, the opening of a Puruis is like a Tesla electric train, is a synonym of environmental protection and fashionable, and today, Toyota has long been mixed. Symptin of technical high-end players.
On the patent, Toyota has created an indestructible patent moat, anything you want to overcome Engineers of hybrid technology, in front of Toyota, will sigh the simple but exquisite design, one side that cannot use such a design to use this design.
Dr. Zhou Guang is also one of them. He describes Toyota’s patents like “the forest is terrible”. You drill in it, or leave a money, otherwise you can only detour.
Toyota can be so bovine in the mixed market because it successfully grasped a cow nose technology – planet gear.
This magical gear is not a Toyota inventive. For example, everyone’s familiar AT gear contains planetary gears, but it has successfully Toyota is the only one in the hybrid system.
This is not just because Toyota has a patent.
Toyota mixed oil, the core is to flexibly distribute the energy stream manufactured by the engine operation, how much to power generation, how much to transfer to the wheel, is always adjusted in real time, and assume this The heavy responsibility is the planetary gear.
It is precisely because high frequency operation and requires extremely high torque. Compared to in the AT transmission, the planetary gear is used in the mixing system, the requirements of the processing process are more than one grade, Toyota is also because there is a super-first-class supply chain integration control ability, and after more than 20 years of improvement optimization, the high quality and low cost batch production of this gear system can be achieved.
So,For other brands, even Toyota gives you drawings and patents, you are also difficult to achieve large-scale low-cost production vehicles.
In other words, I want to catch up with Toyota in the mixed field, or bypass Toyota patents on the basis of getting a mixed special planetary gear manufacturing process, or find it more powerful than Toyota. New solutions, otherwise giving up self-research hardness technology, or serving a soft, recognizing Toyota’s “Mountain King” status, spending money to buy technology.
Chasing Toyota Road
For most brands, the mixing technology is just a flower on the brown, no problem, such as BBA is not in this heart, because people still don’t sell it by fuel trucks, the public is no longer a strategic focus in 2019, and it is fully equipped with Tesla, bet electric vehicle.
The place to spend money is Ford.
In 2011, Ford and Toyota reached a deep cooperation including a mixing system, and launched a Mondeo mixed version of Toyota Mix Technology and a variety of pickup types.
But these do not hinder the minor manufacturer to determine the mixed technology, after all, in the era of hydrogen, hybrid power will inevitably become a long-term solution.
The exquisite of the planetary gear and wanted to bypass Toyota patent has general and Chery.
You Toyota’s patented only one set of planet gears and a set of drive motors? I am using Double!
Based on the design of the double randing star gear and the dual motor drive, universal also creates its own hybrid system, the efficiency is higher, more economical than Toyota, but generally discovery, this complex The extremely high system cost is too high, and there is no sales in quantity, and finally you have to put more resources to electric cars.
In 2016, the mixture was studied in 2001 and launched the first BSG hybrid car in 2009.Wellness, put a set of original ESS mixed architecture that combines planetary gears and CVT technology in its own first plug-in mixed model Ireze 7e.
In the technical salon site, Chery engineers revealed to us, at the time, in order to overcome the process, in this small planetary gear, Chery has invested more than 10 million, but the arm is screwed Thighs, domestic parts manufacturing process and Japan’s gap are not able to change within a short time, which also leads to the difficulty and cost of the large-scale mass production of the mixed system, so the final Chery did not continue to die. This mixing technology direction.
PK Toyota, of course, there is still less than Japanese iron Honda.
After several years of technology evolution, Honda finally created a “String parallel” formula I-MMD mixed with Toyota “power shunt” ideas, and successfully realized Large-scale low-cost production is currently a very small number of products that are capable of hardships with Toyota.
The same use of this “Scene-parallel” idea also includes China’s BYD, Great Wall, Guangqi and other manufacturers.
and Toyota contrary to the ultimate optimization of the engine of the planetary gear, such systems fully draw the advantages of the increase————————/ -., allowing the vehicle to run in pure electric drive mode, and the engine is mainly used. Power generation, can also be disconnected from the middle and high speed, and the motor is driven independently.
Of course, the string is also weak than Toyota THS, which is not balanced enough.
Nice, in the medium and low-speed pure electric mode, the string parallel-joint mixing train is about one electric vehicle, but it naturally has the starting torque of the electric vehicle, the power response is fast, smooth, quiet. Features, but once the engine works, the shortcomings will be exposed.
For example, when the engine is driven independently, because most of them use a single-stranded direct drive, there is no transmission, the engine’s working section is very narrow, and the fuel consumption is not ideal in medium high speed, but if to speed up the speed The noise of the vehicle will be large.
Since the clutch needs to be used to drive the drive motor and the engine connection / disconnection, the I-MMD system will not be able to do the silk-like smoothness like the TS system during power switching.
When power generation, since the speed of coordination of the engine and the motor is accurately coordinated like a THS system, it is difficult to operate in the high-efficiency interval, which will not achieve the ultimate fuel consumption …
That is to say, in the case of cost-controlled cases, more than 20 years have passed. At present, only Toyota’s mixing can make perfect balance in fuel consumption, smoothness, NVH, power, etc., and other brands have only recovery.
Write to Toyota’s “Strongest Battle”
In the face of such a situation, it has accumulated nearly 20 years in the field of mixing. Chery for the first generation of mixed technology accumulated again.
In 2018, Qi Rui officially led the national key research and development plan led by the Ministry of Science and Technology “new high-cost multiplier hybrid assembly development and vehicle integration.” 
In fact, in accordance with the information disclosed on the technology salon, Chery has begun the research and development of the second-generation PHEV hybrid system since 2016, and he also shared a lot about this set. Detail of the DHT system.
For example, in addition to the various indicators of Toyota Mixing System, Chery engineers spent a lot of effort to investigate the actual needs of consumers.
They found that Chinese consumers can use harsh to describe the expectations of the mixed car. They not only ask the fuel consumption enough to be low, the urban area can also open 4 points, but also hope to have 5 seconds The overhead stage accelerates, and the requirements for NVH sound insulation and smoothness are also high.
When the design of the life-fire target, Chery engineers found that the pure electrical life mileage of many mixed models on the market was designed according to the 40 mile (64 km) of the United States, and it is difficult to meet Chinese consumers. Demand, through research, they found that the actual life mileage reaches 50 kilometers to meet the daily needs of 80% of consumers, but if the battery is increased to 100 publicIn order to meet the 92% travel scene, so resolutely definitely definitely definitely 100 kilometers.
Finally, they determined the target to have DHTs with dual motor drives and three-stop structures.
On May 18, 2021, Chery had a full-featured mixed architecture of four years in four years in Wuhu officially laid offline.
This is a global mixed structure, or it is also a “strongest battle” that is currently written to Toyota.
From the structural design, this system has neither use Toyota-type planetary gear structure, and is not like most DHTs using a single-way single motor mechanism, but designed two drive motors and a group. The three-speed transmission is the core part of DHT.
Compared to the single-drive motor used in most DHTs, the Dual drive motor of Chery DHT has several advantages.
The first is to cooperate with the engine, so that the vehicle has three (two-driven) or even four (four-driven) power sources, thereby combining more gameplay, achieving the industry’s largest number of 9 Driving mode and 11 gear combinations, thereby meeting the complex driving scene under various working conditions worldwide, taking the DHT Tiggo 8Plus Phev as an example:
1, start, the front The motor is running simultaneously, can achieve smooth acceleration; the throttle is in the end, and the 3 motor simultaneously drives (quad-driven version), and the total power of the system of 338KW is outbreak out.
2, when driving, when driving, the single motor is pure electric drive, driving smoothly, and the energy consumption is lower.
3, when driving at high speed, the engine and the motor are driven in parallel and highly efficient.
4, when overtaking, the current industry unique engine and the three-motor parallel four-wheel drive can explode extreme power.
5, when the red light can be encountered, the storage electrical energy can be recycled during the process, and the fuel consumption can be reduced.
6, encounter congestion road conditions, can be charged during driving, parking during parkingElectricity.
7, when traveling at a high speed, the 1.5T turbocharged engine direct drive, and always keep the speed in medium low through the three-speed transmission In addition to maintaining low fuel consumption, you can achieve better mute effects.
8, long-distance travel, the incremental driver, the parallel drive mode, and the energy recovery function allow the vehicle to charge while driving.
9, when the slope of the mountain road, the parallel four-wheel drive mode can get an abundant power. Downhill can be recovered during the braking process, which can reduce fuel consumption.
10, when the high-speed steering, the front axis and the rear axis are calculated by the system, and the optimum torque is allocated, and the steering stability is achieved. 
11. Under extreme road conditions such as ice and snow, mud sand, the rear drive and four-wheel drive mode can improve the vehicle’s driving and control stability and take off in time.
At the same time, two groups of mature medium and low power motors were combined using a high-power motor system, whether it is a motor or The clutch system can improve stability, and better adapted to China’s parts level in the manufacturing process, thereby reducing the dependence on overseas technologies, avoiding the negotiator’s neck.
In addition, the three-speed transmission of the DHT can not only be used as a transmission when the engine direct drive mode. Further, it is also possible to combine two motors. When power generation, the speed adjustment is achieved, such a benefit is that the speed of the generator and the engine matches the respective optimal intervals, significantly increasing the efficiency of power generation. 
The result is:
100 kilometers no more than 5L power consumption, 100 kilometers acceleration time is less than 5 seconds, 100km pure electricity, one box of oil is more than 1000 kilometers, all-power four-wheel drive system, realize the effect of all kinds of excellent hybrid system in the current market with a mix system.
In contrast, Toyota is about to be listed in Wanta Phev, despite 100 kilometers of loss of electricity oil consumption of 5.2L (two drives), 5.5L (four-wheel drive), 100 kilometers accelerated 6.6 seconds, pure electricity regular 95km (two floods), 87km The score of the four flies is very good, but it is still more than Qi Rui.
Leading on the book data is still the most exciting place for the DHT system, when asked if other manufacturers imitate When this excellent architecture, Zhou Zhi’s Dr. Zhou said that Chery DHT not only obtained the national invention patent, but also had a complete independent intellectual property rights, but also in the development of Toyota R & D THS, building a solid Patent protection system. 
As far as, as of now, Chery Group has accumulated more than 21,000 patents, authorized more than 13,000 patents, ranking in front of the Chinese auto industry. A mixed patent “forest” belonging to China’s brand is thriving.
24 years ago, the first column of the Chery engine factory just stepped up, Toyota’s THS was shining under the magnesium lamp. After 24 years, Chery has already used himself. The struggle to catch up with prove, China’s brand is completely capable of pulling a wrench wrist in the mixed field and Toyota.
In this technological salon, the Expeditionary Executive Director of the Qi Rui Power System Technology Center, the Executive Director of the Qi Rui Power System Technology Center, is impressive.
20 years ago, on the way of returning from Europe, Chery young engineers suffered a luggage overweight at the airport, and they did not have time to consign, facing the two boxes of technical information and the other two boxes to their wife. The gift of the child, they didn’t think it was, and the latter was lost, with the technical information.
This story may be explained, why Chery can be in just 20 years, in various fields such as engine, new energy, mix Create a unwavering result.
Yucheng said that companies want to grow up,Can’t rely on the dead technology to buy, you must seize the “cattle nose” and master the technology.
This spirit, obviously has already been dissolved into the blood of Qirui, and is helping Chery step by step to Toyota’s height, becoming a great world-class car company.