What is the principle of electric vehicle braking? How to replace the brakes of electric vehicles and matters needing attention
Posted by Admin | 15 Oct
Electric cars help you to run, but no brakes will make you unable to stop. Only if you can run or stop can be controlled by you. Don't let an electric car without brakes control you into the abyss.
Let me talk about the replacement method of the brake principle and precautions! I don’t want to say that, I hope you can add suggestions to enrich the experience to make repairing the car easier.
Electric vehicle brakes are roughly divided into holding brakes, up brakes, drum brakes and disc brakes.
1. Hold the brake. The braking principle of the holding brake is to hold the wheel hub from the outside to the inside to brake. This brake adopts mechanical transmission. The brake effect of the lock brake is not good due to the abnormal sound of the brake. It has been almost eliminated at this stage, so I will not say more now!
2. Rising brake. The braking principle of the expansion brake is to brake from the inside to the outside, pulling the brake line, and only one side of the brake is quickly opened to achieve the braking effect. The brake effect is good, and it is widely used in electric bicycles, but it is inevitable to use it to a certain extent.
A. Spray the rust remover on the screws to be disassembled. It is inevitable that they will rust for a long time. Forcible disassembly will cause the screw pattern to be broken.
B. Disassemble the screws and gaskets at will, to provide convenience for installation.
C. Knock on the brake disc. Don't change the brake because it saves trouble. If the brake disc is not round for a long time, it will cause harm to the brake pad. Don't use brute force when knocking, it is easy to knock the aluminum cover of the motor and crack.
D. When installing, apply a little lubricating oil to the rocker arm on one side of the upbrake. Remember that the brake pads are not allowed to be stained with oil, so as to avoid rusting and inflexible resetting after a short time.
E. The clearance between the inside and outside of the brake should be moderate. Use shims to adjust the clearance! .
F. The screw to fix the brake motor shaft must be tightened, otherwise the brake will cause lock and fall.
G. Debug the brake to prevent it from rolling resistance. Check whether the brake is powered off. The non-electric parts of the brake are easy to break and it is not safe for people to ride.
3. Drum brakes. The principle of drum brake braking is to open the brake cable or brake lever, and the two brakes are simultaneously spread out and close to the brake ring to achieve the braking effect! The drum brake replacement method is relatively simple! After removing the wheel, use both hands to buckle it down. When installing, fold it to 90 degrees with both hands and move it up! Similarly, the joints should be a little oily, flexible and free to rebound!
4. Disc brakes. The brake principle of disc brakes is to use hydraulic oil to push the brake pads against the stainless steel plates to brake. The disc brakes need to be replaced after a period of time.
A. Open the brake fluid cup cover and loosen the vent screw on the lower pump slightly to allow the brake fluid to leak out.
B. Flow the turbid brake fluid from the vent hole and then add new brake fluid to the oil pump until the clean brake fluid is seen, and then tighten the vent hole screw.
c. Disc brake exhaust method skills: Open the lid of the upper pump oil cup, repeatedly pinch the brake lever of the pump several times, then pinch without letting go, then loosen the oil drain screw of the lower pump, and repeat the operation until The brake lever is under pressure. If the brake lever is too soft and there is no pressure, open the air exhaust screw on the lower pump. At this time, do not pinch the brake lever. Oil will flow out of the air exhaust screw hole, and air bubbles will also come out when the oil flows out. "The premise must not be lack of brakes. "Oil", drain until no bubbles come out, tighten the exhaust screw.
The quality of the brake determines the safe behavior on the road. Don’t run into a rampage, don’t change lanes randomly, don’t run a red light, and make sure you are driving when you turn safely. For yourself and others, the brakes will not stop. Please repair them in time! If the brake can't stop, it's helpless to stop! Pedestrians in the past could not be controlled, the tram brakes had to be helped, repairs in advance were no harm, and the riding safety was good!