What does energy recovery from new energy vehicles mean?

Introduction What does energy recovery of new energy vehicles mean? Energy recovery of electric vehicles means that the vehicle brakes and generates electricity via the motor when decelerating (in particular, how the generator generates electricity can be examined in

What does energy recovery from new energy vehicles mean?

Electric vehicle energy recovery involves braking and generating electricity via the motor when the vehicle decelerates (for more details on how the generator generates electricity you can read a manual of physics in college) and to recycle the electricity in the battery. pack. 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.

Energy recovery of electric vehicles is that the vehicle brakes and generates electricity through the motor when decelerating (you can read the college physics textbook for more details on the way the generator generateselectricity) and recycles the electricity. 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 is 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, the so-called recuperationof energy while coasting by rolling the throttle, called coasting recuperation.

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 freine first and the motor serves as the primary torque source. and the hydraulic brake acts as a brake.

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?

Regarding car selection: For thelowest 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 the intervention of other external forces, and braking energy recovery will consume a certain amount of low-voltage energy. When the CRBS is working, 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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