#新Energy Vehicle# #BYD# $BYD(SZ002594)$ $BYD STOCK(01211)$ @Today’s topic @雪ball creator center
On September 13, BYD announced a new hybrid patent, which is a bit interesting.
Today, I will talk to you about the “key core features” of this patent (Note: For the most authoritative interpretation, please look forward to BYD’s official press conference )
1. Core Features:
The following is an excerpt from the original text of the patent application: The hybrid power system according to the embodiment of the present invention has the advantages of compact and simple structure, small axial size, low cost, fast mode switching speed, good vehicle fuel economy and good energy saving effect.
1. The structure is simpler and more compact, and it is easy to install: through the arrangement of the first planetary row 110 and the second planetary row 210, the hybrid power system 1 of the embodiment of the present invention can perform the hybrid mode and pure operation of the vehicle without setting a clutch. The switching of the electric mode can greatly reduce the production cost, further simplify the structure, and reduce the installation space while ensuring the driving force range and the variable driving force range of the hybrid power system 1 .
2. Fast mode switching and low production cost: Since the hybrid power system 1 of the embodiment of the present invention can change the power used by the engine 100 to drive the vehicle, the vehicle also has good power performance even when the vehicle is climbing with medium and low loads, which is beneficial to The working efficiency of the engine 100 is improved, and the economy of the hybrid power system 1 is better.
3. Improve the adaptability of the vehicle to the driving environment: the engine 100 is transmitted to the first motor 200 through the double planetary rows, so the load that each planetary row bears individually is reduced. In this way, the service life of the two planetary rows can be improved, the volume of each planetary row can be reduced, the required installation space is small, and the miniaturized setting of the hybrid power system 1 is facilitated . Since the upper limit of the load and the upper limit of the torque that the two planetary rows can bear as a whole are increased , the hybrid system 1 can select the engine 100 with a larger output power to provide a larger driving force range, which is beneficial to improve the vehicle’s ability to Adaptability to the driving environment.
4. Good ride comfort and good fuel economy: The hybrid power system 1 can realize electronically controlled continuously variable transmission to achieve more flexible speed regulation and a wider range of speed regulation, thereby optimizing the working range of the engine 100 and improving the hybrid power The efficiency of system 1.
Most of my friends, after reading the descriptions of so many patent texts, may say that they do not understand, understand, or understand!
In a nutshell, there are four advantages:
First, the installation size and cost: the current DM-i system is mainly used for A-class cars, but it is still difficult to fit into smaller-sized A0-class cars. However, the next-generation DM system, in terms of cost and size, has no problem at all down to the A0 level.
Second, lower fuel consumption and smoother driving experience: the current fuel consumption of 3.8L on the A-class sedan and the 4.2-liter fuel consumption on the A-class SUV are already surprisingly low. The lower space is relatively limited, but the ride comfort will be further improved;
Third, solve the problem of extreme scenarios of “small horses and big horses”: in some extreme scenarios, there will indeed be extreme situations where the engine is not enough. The next-generation DM system can be equipped with an engine with a larger output power to provide a larger driving range, so that it can maintain sufficient power in scenarios such as “low-medium-heavy-load climbing”, “continuous high-speed overspeed”, etc. Improve the adaptability of the vehicle to the rainy driving environment.
Fourth, the rear-wheel drive P4 motor + differential lock: Let the next-generation DM technology have more models and scenes that can be matched, such as the plug-in version of the “Jimney”, such as the new coupe model?
2. Simple working principle and logic (if there is something wrong, I hope you will correct it)
This is a dual-planetary gear hybrid system, dual-motor + conventional differential front/rear-drive hybrid, no mistake, this system can be a rear-drive hybrid.
The starter motor is removed, and the starter motor + generator + drive motor are combined into one.
The first motor, that is, the first motor 200 mentioned in the patent, is the driving motor, the generator and the starting motor.
The engine can be directly driven, or it can drive the first motor to generate electricity through a planetary gear. In the extended-range mode, it is equivalent to a rear-drive vehicle.
With the second motor, there are four working modes: pure electric four-wheel drive, hybrid four-wheel drive, extended-range rear drive and high-speed direct drive (the first motor is driven in parallel, and the second motor generates electricity)
In terms of logic and structure, it is very close to Toyota’s THS, but the working conditions are more extensive than THS, and it is suitable for more special working conditions, such as: power performance when climbing a hill with medium and low loads, continuous power loss at high speed Stability while driving.
It is also more universal than the existing DM-i and can cover more special scenarios and working conditions.
This power combination can be composed of: a higher-power engine + 2 slightly smaller generators, so as to avoid the phenomenon of a small horse-drawn cart with a small-power engine during high-speed direct drive.
Finally, is it time for many friends to say “backstab” again.
If we look at the filing date of this patent , March 9, 2021, which is the day after the Qin Pluys DM-i model with the new DM-i technology was released.
This time, I finally understood: the true meaning of “pre-research generation, trial production generation, mass production generation”, co-authored a new car mass-produced and launched, and the next-generation patent has been applied for? How does this make friends pursue?
According to BYD’s conventional routine, it is expected that the next generation of DM products will be officially released around Q1 2023 at the earliest .
At that time, the first-generation DHT products of the friends were just starting to be sold.
Maybe this is the confidence and reason why BYD said that its technology has been ahead for 3 years?
As for, will the older generation of products be phased out?
Of course not, the old product BYD can also be sold to overseas markets.
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