New Wenjie M5 declared, retaining extended range/increasing equipment at the cost of wind resistance

Introduction Application for the new Wenjie M5, retaining the extended range/sacrifice of wind resistance and additional equipment Author: Hao Yi Editor's opinion: The application drawing of the new Wenjie M5 is here, and it is estimated that it will be officially un

New Wenjie M5 declared, retaining extended range/increasing equipment at the cost of wind resistance

Author: Hao Yi

Editor's Notice: The application photos of the new Wenjie M5 are here, and it is expected to be held at the Shanghai Auto Show in April. It will be officially revealed. In the configuration upgrade, it is commendable to retain the extended-range electric models that consumers like, but in order to add lidar and full-screen lenses, they actually followed their own example and played with the design of a bag on the head... In other words, although new energy vehicles do not need to use the wind resistance coefficient to promote the consumption performance of fuel, they will also consume electricity when wind resistance increases. even several large bags are easy to lose in terms of the aesthetics of the overall lines. Many consumers cannot accept it. I hope that when thecar will be revealed, this bulge can be integrated into the rounded lines of the roof. Not to mention that the protruding design is prone to accidental damage. If a car wash shop finds a business opportunity, owners of cars with curved roofs will have to pay extra for car washes.

Recently, the application information for the mid-term refurbished Wenjie M5 extended range model was obtained from the website of the Ministry of Industry and Information Technology. The appearance of the new car has minor changes, focused on improvement. the assisted driving function and the addition of a rear-view mirror above the front of the car. Full-view radars and ADAS cameras are installed on the roof. It is reported that the computing unit will also be replaced by the MDC developed by Huawei, so there. there could be improvements in autonomous driving assistance tothe future. The length, width and height of the body are 4770/1930/1625mm respectively, and the wheelbase is 2880mm, which is consistent with the current model. Another source said that the new car is expected to add a “HUAWEI” logo on the rear.

The power system will continue to be equipped with extended range hybrid power. The range extender uses a 1.5T motor with a maximum power of 112kW (152Ps). The rated power of the range extender generator is 60 kW. The maximum declared value of the model is 200 kW, and fuel consumption in WLTC operating conditions is 0.53 L/100 km. ?

This article is from the author of Yichehao, Autospeaker. Copyright belongs to the author. Please contact the author for any form of reprinting. The content only represents the opinion of the author and has nothing to do with Bitauto

Recovery ofenergy of electric vehicles is that the vehicle brakes and generates electricity through the motor when decelerating (the specific method of the generator generates electricity (can be read in the junior high school physics textbook), recycle the energy back into the battery Since traditional fuel vehicles do not have engine recuperation, the only resistance the vehicle experiences when coasting or braking is the resistance of the engine. entire vehicle (wind resistance, ground friction resistance, etc., brake friction resistance) and the energy generated by deceleration is consumed

Energy recovery of electric vehicles consists. that the vehicle brakes and generates electricity from the motor when decelerating (you can read the college physics textbook for more details on how the generator generates electricity) and recycles theelectricity. in the battery. Since traditional fuel vehicles do not have engine recovery, the only resistance the vehicle experiences when coasting or braking is the resistance of the entire vehicle (wind resistance, ground friction resistance, etc., brake friction resistance) and the energy generated by deceleration is consumed.

3. What are the types of energy recovery for new energy vehicles? What's the difference? What types are there?

There are two main modes of energy recovery for electric vehicles: braking recuperation and coasting recuperation. The difference between the two is whether the brake pedal is depressed. As the name suggests, energy recovery is achieved by pressing the brake pedal, called brake recovery. Energy recoveryis achieved by coasting with the accelerator, called coasting recovery.

Currently there are two ways to realize motor braking energy recovery, one is parallel regenerative braking system (RBS) and the other is called a regenerative series braking system (RBS).

What is the difference between the two?

RBS Since the brake pedal and the brake wheel cylinder are connected in parallel, during the braking and deceleration process, the brake wheel cylinder will have hydraulic pressure to brake, and the motor will also generate braking. Therefore, some energy is still lost due to braking friction and the energy recovery rate is low.

The brake pedal and hydraulic mechanism of CRBS are connected in parallel during the braking and deceleration process, the motor brakes firstand the motor serves as the primary torque source. and the hydraulic brake acts as a brake to compensate for insufficient power torque.

So CRBS recovers more than RBS, but if the brakes are pushed to a certain depth the two are almost identical.

Currently, the Xpeng P7 uses Bosch's Iboost system, which is equipped with a highly efficient CRBS brake energy recovery system. This is one of the reasons why the P7 can achieve an ultra-long range of 706 kilometers. (Note: iBooster is an electromechanical power brake system launched by Bosch in 2013 that does not rely on a vacuum pump. It can achieve energy recovery of up to 0.3 g of deceleration and increase cruising range electric vehicles up to 20%.)

3. How to choose the energy recovery of an electric vehicle in real driving?

Regardingcar selection: In order to minimize energy consumption, of course choose a vehicle with CRBS function. Of course, if you can use coasting energy recovery, use coasting energy recovery more. The reason is that coasting energy recovery is 100% recovery without further external force intervention, and braking energy recovery will consume a certain amount of low-voltage power when CRBS. works. At the same time, under certain working conditions, there will be hydraulic braking intervention causing energy loss.

(Photo/Text/Photo: Q&A) Wenjie M5 Xpeng Motors P7 AION V Trumpchi GS8 Xpeng P5 Ideal ONE @2019

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