FAW Toyota made a new move, and Takizawa E entered the black technology analysis. Can Tesla still sit still?

After 20 14 Tesla Model S officially entered China, the domestic new energy market ushered in a blood shed. Especially pure electric vehicle brands, all kinds of capital have poured in. At the craziest time, the number of brands increased to dozens in a short time, which was very exaggerated.

But it's the same sentence: I don't know who is swimming naked before the tide ebbs. There are very few brands that have survived so far. However, have you found that even now, car companies that started with fuel vehicles, except some domestic brands, are not in a hurry to launch pure electric vehicles on a large scale.

Well-known Toyota is one of them, but recently the first mass-produced pure electric vehicle of Toyota brand will be listed soon, that is, FAW Toyota Yize E will enter the engine.

Why did you mention Tesla before? First of all, Tesla, as the benchmark of pure electric vehicle brand, must be the benchmark brand that traditional car companies can't avoid on the road of promoting pure electric vehicles.

After all, Tesla's sales are there, and it can only be competitive if it is similar to or better than it. First of all, the Yize E engine uses Panasonic batteries of the same brand as Tesla, with a total battery capacity of 54.3Wkh and a battery life of 400km.

However, unlike the round battery of Tesla 4500-7000, Yize E uses a 288 square battery. In contrast, it is more advanced. Under the same volume, the battery pack has higher overall energy density, higher heat dissipation efficiency and safer.

In terms of battery life, it is certain that the battery will only be good and not bad, and even Toyota promises that "the battery capacity maintenance rate will reach more than 80% after ten years". In addition to using Toyota's accumulated technology and experience in hybrid vehicles, one of the reasons for this confidence is the use of refrigerant cooling.

As we all know, the temperature has an important influence on the service life and performance of the battery, and the most suitable temperature of the battery should be between 15-35. According to the time required for the battery to decay to 80% at different temperatures in the laboratory, it can be seen that 23 is a very suitable temperature for the battery.

Except for a few areas, this temperature range is rarely maintained in summer and winter, which requires heating and cooling measures to ensure the temperature of the battery. I won't elaborate on the heating system, because all pure electric vehicles made by normal car companies have this function. The main difference of Yize E engine is that there is a battery electric heating device under each battery.

There are many ways to cool down, among which air cooling and liquid cooling commonly used by car companies (including Tesla) have certain limitations. The biggest disadvantage is that the cooling effect depends on the weather.

No matter how bad it is, extreme temperature will have a certain impact on the cooling effect, and even have the risk of serious failure, and the refrigerant used in Yize E engine is more stable.

In the way of indoor air conditioning system, a special evaporator for battery cooling is set in the battery pack to blow cold air to the upper and lower parts of the battery cells respectively to achieve the effect of cooling the battery.

This method not only has a good heat dissipation effect, but also has a balanced temperature in all parts of the battery. As long as there is enough refrigerant in the air conditioner, it is not limited by the external environment temperature.

In addition, the safety of batteries has always been a special part of new energy vehicles, especially pure electric vehicles. After all, it is related to the safety of people inside and around the car. Take Tesla for example. Just search for the keyword "Tesla, Fire" on the Internet and you will get many search results.

Other brands, such as the well-known Weilai and Ideality Zhizao, have also experienced spontaneous combustion. In order to avoid this problem and better protect the passengers in the car, Yize E Jinqing used three means to deal with it.

The cold air duct serves as a buffer energy absorption area.

Protecting the battery from being squeezed and deformed during impact is an important means to prevent the battery from catching fire, and it is also one of the directions for car companies to study and upgrade.

Toyota engineers also arranged air-conditioning ducts to help cool the outer edge of Yize E's battery pack, which is the blue part below.

In the event of a collision, this pipe can play a certain role in absorbing energy and increase the battery's ability to withstand side collision. Moreover, the high-voltage pipeline is arranged in the middle of the battery cell, which can further reduce the danger caused by collision.

The battery pack is designed as a part of the body frame.

As I said just now, the huge deformation of the battery may cause spontaneous combustion. As a buffer energy absorption area, the cold air duct effectively protects the accidental impact on the side of the vehicle.

On the basis of body-in-white, Yize E engine also adds two horizontal and two vertical skeleton structures, and the bottom is covered with reinforced materials of box beam structure to prevent accidental dragging and collision. The integration of the battery pack and the car body improves the protective performance of the battery pack.

This design can not only protect the battery from front to back, but also protect the battery from top to bottom. In addition, the battery package is designed as a closed structure, and the sealing material adopts sealant tape, which gives consideration to waterproof and dustproof performance. At the same time, the bottom of the battery pack is coated with an antirust coating twice that of the conventional method.

Moreover, the benefits are not limited to this. Compared with the gasoline version, the torsional stiffness of the engine block of Yize E is increased by 20%, and the center of gravity is reduced by 14%. Better handling, but also improve the safety of the vehicle when rolling.

Why is it rolling? Take a look at the tumbling test of Tesla Model X below. Because of the low center of gravity, different levels of testing did not let Model X fall to the sky. This can effectively avoid the deformation of the body structure when an accident rollover occurs, and prevent the door from being difficult to open.

Triple safety monitoring system for battery pack

After all, the battery pack is also a relatively precise component, so it is very necessary to monitor all components in the battery pack, which requires a battery management system (BMS). The battery management system is actually an electronic component, which can detect and evaluate the state of the battery and give corresponding measures.

Yize e-Engine has a leading triple safety monitoring system for battery pack, which can monitor each battery cell, the block composed of multiple batteries and the total voltage in the battery pack, thus ensuring the stability of the system. When an abnormality occurs, it can be controlled in time.

Some people may doubt Toyota's technology of manufacturing pure electric vehicles, but there is no need to worry. As early as 1970s, Toyota began to develop electric vehicles. At that time, new energy vehicles were basically neglected, and Toyota dared to invest its profits in this project with unknown income, which proved Toyota's unique vision.

Regarding the hybrid system, there is a folk saying that there are only two kinds of hybrids in the world, one is Toyota hybrid and the other is others, which shows that everyone recognizes Toyota's new energy technology.

As can be seen from the history of Toyota's electric vehicles, Toyota launched the first Prius hybrid car in 1997, which is also the first hybrid car in the world. In 2000, the sales volume exceeded 50,000 units, and by the end of 20 17, the cumulative sales volume reached 4 million units.

Since then, Toyota's hybrid technology has been continuously improved and upgraded, and its models have become more and more abundant. So far, it has developed into the fourth generation THS-II hybrid system. After more than 20 years of technical precipitation, Toyota has profound attainments in the core technologies of electric vehicles such as batteries, motors and power control units.

There are150,000 HEV, PHEV, EV and FCV users all over the world, and the endorsement of battery 0 safety accident. It can be said that the EV technology of Yize E-Engine is very mature.

As we all know, Tesla's level in vehicle assembly technology is still relatively low, various joints are not aligned, the trunk is leaking, and the license plate frame is not in the middle position. In short, it is a car. Now netizens are teasing. As long as your Tesla finds any assembly process problems, congratulations on buying the genuine product.

As an automobile company founded in 1933, Toyota has been building cars for so many years, and its experience can't be richer. There will hardly be such a problem. I haven't seen many people complain about Toyota's assembly technology anyway.

Takizawa E-Engine will be manufactured in Toyota's first complete TNGA brand-new factory overseas. This brand-new factory has successively manufactured the flagship models of Asian Dragon, and its manufacturing strength is definitely stronger than Tesla.

Tesla also has a big injury, that is, you can't guard against unexpected official drop. Take the imported Model3 rear-drive long-life vehicle as an example. At that time, the starting price of the model was 407,000 yuan, including AP driver assistance system, the bare car price was 434,800 yuan, and the new car landing price was 48 1.800 yuan.

The starting price of the domestic Model 3 rear-drive long-life version subsidy is in the early 300,000 s, and AP is standard. In a year, this Model 3 lost nearly 1.5 million+,and you will never buy the lowest price Tesla.

In addition to this visible loss, the ultra-high depreciation rate of new energy brand models invisibly makes the car owners worse.

Take Weilai ES8 as an example, the depreciation rate of cars in one and a half years is as high as nearly 50%, and Tesla is relatively better. It will take at least 3-4 years for Weilai's depreciation level to be put on fuel trucks, not to mention those models with value preservation.

The hedge ratio has always been the advantage of FAW Toyota models. From Corolla to Prado and Wilfa, the hedging rate is still very gratifying. Although the actual hedge ratio of the pure electric version is still uncertain, Bian Xiao gives people the impression that even if it is not as high as the gasoline version of the same model, it will never be as low as Weilai's outrageous level.

After all, Tesla is considered as the most valuable pure electric vehicle, and the more advanced Yuzawa E engine using the same Panasonic battery is bound to be much better than Tesla.

To sum up, FAW Toyota Yueze E engine, as Toyota's first pure electric vehicle, has a cruising range of 400km, which is still above average. Moreover, in order to ensure the safety and life of the battery, we have made great efforts, such as cooling the refrigerant, designing the battery pack as a part of the body frame and so on.

As a veteran car company, Toyota is also the first car company to develop new energy, and its experience and strength are quite reliable. It is very suitable for car owners who want to buy pure electric vehicles but pursue safety to learn more.

This article comes from car home, the author of the car manufacturer, and does not represent car home's position.