[YesAuto Test Drive] With the deteriorating environment and the increasing shortage of energy, environmentally friendly cars with low energy consumption are bound to be the development trend of future cars. Nowadays, more and more manufacturers are also shifting their focus to the field of hybrid power. As a hybrid model that was put on the market in the early stage, Toyota Prius has now launched the third generation of products, and the plug-in hybrid power used in new cars The system is a major technical highlight. Although the time to market for the car in the Chinese market is still far away, testing in China has already begun. Recently, we were fortunate to be exposed to this new product and experience this hybrid system. .
The test drive of this event is short, and the vehicle speed is required to not exceed 50km/h, so this article mainly explains the working status of the plug-in hybrid power system promoted by the new Prius.
● Appearance: the shape has not changed, the details have been changed
In terms of appearance, the third-generation Prius has no changes compared with the old one, but the details of the design have been changed. The front face has relatively large changes, the headlights have become sharper, the width indicator lights and the fog lights are parallel to form a rectangular shape, and the slender air intake grille is matched with the blue logo representing Toyota's hybrid power, which is very futuristic.
The body still maintains the old style, and a charging socket has been added under the left rearview mirror, which can be charged by an external power supply. The wheel hub adopts a new five-frame design, and the size still maintains 15 inches. Same as the old model, the battery is still placed under the tail box, so the rear shape has not changed, and the details have been changed very little.
● Interior: full sense of science and technology, good workmanship, general materials
The changes to the interior should be considered complete. Compared with the old Prius's somewhat old-fashioned central control design, the new model uses design elements with a sense of science and technology. The integrated center control panel extends from the upper end of the center console to the armrest box. The streamlined slope is not only visually very technological, but the bottom of the panel just forms a large and very practical storage space.
The center console adopts an irregular color scheme. The buttons on both sides of the multifunctional steering wheel are concentrated in a circular area. The one-button start button and the shift lever are in blue, which represents hybrid power. All of this blends together to make people The style feels a bit jumpy but not awkward.
Although the center console adopts a brushed-like design, the performance of the Prius is relatively general from the perspective of materials. Some areas of the center console and door panels are made of harder materials, and the seats and door panel elbows are all made of flannel materials. However, the overall workmanship is worthy of recognition.
Toyota uses plug-in hybrid technology on the new Prius. Before introducing the hybrid system of the new car, let us first understand what a plug-in hybrid system is.
The traditional charging method of hybrid electric vehicles mainly relies on two aspects: the energy produced by the engine during driving and the energy recovered during braking. This energy will be converted into electric energy to charge the vehicle battery; as a plug-in hybrid system, the traditional On the basis of the charging method, a more direct external power supply is added.
● Compared with the previous generation models, the third-generation Prius power changes
1: Engine displacement: increased from 1.5L of the old model to 1.8L
2: Battery type: from the nickel battery of the old model to a more stable and durable lithium battery
3: New charging method: the biggest change is that the charging method adds an external plug-in form
● Whose power output is based on: oil and electricity are used together / electric energy is used first
Since it is a hybrid, the generator and gasoline engine must work together in daily use, and the car is equipped with two systems, a gasoline engine and an electric motor. When the vehicle speed is lower than 100km/h, you can see a series of green arrows representing electric energy flowing from the battery into the wheels through the schematic diagram of the central control display, which means that the power is completely provided by the electric motor at this time;
When the vehicle speed is higher than 100km/h or accelerates rapidly, a series of brown arrows will be added in the schematic diagram to point to the inside of the vehicle, which means that the gasoline engine is involved and works with the electric motor. In daily use, the trip computer will follow the principle of power priority for power distribution, without human control.
● How to recycle power: three ways to charge
Method 1: Charge the battery while the gasoline engine is working
Except for sudden acceleration or uphill conditions, the gasoline engine and the motor need to work together. Normally, the motor will stop working when the gasoline engine is working, and the gasoline will charge the battery. At this time, it can be seen from the schematic diagram that the brown arrow represents the gasoline engine. Will appear, and at the same time the green arrow representing the electrical energy will flow into the battery in the reverse direction, and charging will begin.
Method 2: Braking force charging
As with all hybrid models, the energy during braking will be stored in the battery in the reverse direction. No matter what kind of power system is working, as long as the brake pedal is depressed, the green arrow representing electric energy will enter the battery in the reverse direction to charge the battery.
Method three: external power supply charging
This is also the biggest feature of plug-in hybrid power that is different from traditional hybrid models. The battery can be charged through the power plug in life. However, because the battery is inconvenient to remove and carry, there are certain requirements for charging.
● Add two driving modes
There are two mode selection buttons in the center control panel of Prius, namely environmental protection mode and power mode. The intervention of the former gasoline engine will lag as far as possible. At this time, we depress the accelerator pedal to about two-thirds of the depth, and the gasoline engine will be displayed on the screen. The latter only needs to step on about one-third of the gasoline engine to enter the working state very sensitively, and the power output will be more direct and abundant.
Summary of this article: Difficulty in promotion / urgent need for policy support
There is no doubt that hybrid and even new energy vehicles will be the direction of future automobile development. However, as far as the current overall environment is concerned, it is still very difficult to popularize hybrid vehicles in recent years. The main reasons are as follows:
First of all: expensive
The expensive price is not cost-effective in any respect. If you spend 100,000 or more higher than the same-level model to buy a hybrid model, the fuel value saved may drive the car to scrap It also saves no less than 100,000 yuan. Therefore, only some successful people with certain economic strength and a strong sense of social responsibility will buy this type of car.
Secondly: the technology is not yet mature and the use cost is high
Although it has been more than ten years since the launch of the first hybrid Prius, the market is still in its infancy, and more manufacturers have just stepped into it or even stayed at the stage of attention. And at present, this type of model is much more expensive than the same-level models from maintenance to maintenance, and it is indeed very difficult to promote.
Third: Incomplete supporting facilities such as charging
Plug-in hybrid electric vehicles have certain requirements for charging stations and other supporting facilities. At present, very few families have private garages in my country, and public charging places are not popular, so the convenience of use is greatly reduced.
Of course, looking forward to the future, hybrid power will definitely replace traditional energy vehicles. It is not a dream to enter ordinary households with mature hybrid models in terms of technology. However, the current objective conditions do hinder its development. In this case, the government will soon Promulgating a complete and powerful subsidy policy and related infrastructure construction is the top priority.