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Whether it is an electric bike that exceeds the standard or a national standard electric bicycle, it will be a means of transportation for the general public in the near future. Electric bicycles or electric bicycles have entered thousands of households and are closely related to people's lives and work. As time goes by, we will find that the voltage of electric vehicles drops very quickly with just a slight acceleration. The rapid decrease in voltage indicates that the electric vehicle will not be able to run far. Bringing a certain impact to the work and life of friends, afraid of breaking down halfway. Some people don't understand what caused it and spent some money in vain. Actually, many problems can be solved by oneself. I have compiled my personal experience for everyone's reference.

The first reason is that the configured battery capacity is not reasonable enough and performance degradation occurs. For the configuration of battery capacity, most manufacturers will consider it. Small and lightweight electric vehicles are generally equipped with 12, 13, 14, 16, and 20AH batteries. Vehicles that exceed the standard and electric motorcycles both start at 20AH. A normal start or acceleration while riding should not exceed a voltage drop of 2V. But some people, in order to lower the purchase price, should be equipped with a 2020Ah configuration, and the configuration should be changed to 14Ah or lower. Or choose a lower capacity battery when replacing the battery. There is another situation to discuss here, which is that the lifespan of the battery is approaching. If this problem occurs a year later, it is possible that the capacity of the originally configured battery has decreased, so try to replace it after a period of time.

The second reason is that the vehicle is overloaded. For example, when riding, carrying heavy goods or carrying people. Alternatively, during the uphill phase of cycling, the electric vehicle's motor requires higher power, which requires more current to support. At this point, a significant decrease in current is a normal phenomenon.

The third reason is that the plug has become loose and burnt out. The plug referred to here includes the controller connection plug and the battery connection plug. If the plugs are not tightly and firmly connected, resulting in a small contact area, it will correspondingly increase the resistance of the circuit. Everyone should regularly check the power connection wires of the controller and the interface of the battery connection bus.

Loose or loosely connected areas of the interface can lead to erosion in severe cases. At this point, one should be vigilant, as the contact surface is too small, resulting in a high resistance. When the current flows through, there will be a phenomenon of heating here. When the situation is severe, it can cause the plastic of the joint to melt, resulting in a short circuit. In extreme cases, it can be a fire or battery explosion in an electric vehicle. So I advise everyone to regularly check the various interfaces of the wires. Promptly address any issues, replace plugs or wires, or solder the connection points.

The fourth reason is to blindly modify the wiring of electric vehicles. Some people blindly install various lighting fixtures and even sound systems on electric vehicles, which adds a lot of burden to the battery. Unqualified wires were used during the modification of discarded wires. For example, using relatively thin wires or inferior products. Resulting in an increase in the overall resistance of the circuit. An increase in resistance consumes energy, and the battery incurs an additional cost when supplying power to the motor. So generally, do not change the circuit arbitrarily.

Some people replace their controllers and motors with higher power in order to run faster. In fact, doing so is very dangerous. Firstly, it has a serious impact on the lifespan of the battery. The output of high current is a fatal injury to the battery. The output of high current may cause heating of the wires, which can have very serious consequences. You can test it by touching the power cord or interface with your hand after long-distance cycling. Any slight heating is not allowed. This indicates that the wires cannot withstand such high currents and power, and the consequences should be understood by everyone.

The fifth reason is the decrease in power and performance of the motor. In fact, for electric motors, they can be used for a long time. However, electric motors may experience a decrease in power and torque due to various reasons, resulting in a decrease in energy efficiency. For example, if the electric motor has been submerged in water, long-term high-speed driving can cause demagnetization, bearing damage, and lack of lubrication. This requires us to develop good cycling habits and regularly maintain electric vehicles.

I have conducted destructive experiments before. The 3V small motor was powered by a 16V power supply for more than 10 minutes, but it generated a lot of heat but was not damaged. It indicates that the motor has strong voltage resistance, but please do not try it. Just understand what I want to explain. In short, we should pay attention to two things when cycling. The first is not to let the motor get wet, and the second is not to let the motor drive at high speed for a long time. The motor of an electric vehicle is really difficult to damage, of course, miscellaneous motors are another matter.

What is the reason for the rapid voltage drop when riding an electric bike? Come and take a look

What is the reason for the rapid voltage drop when riding an electric bike? Come and take a look

The sixth reason is that the brake is set too tightly or the brake rebound is weak. In practical experience, some users prioritize safety and a suitable feel for themselves. Adjust the spacing between the brake pads to be particularly tight, and the brake lever will lock when pinched. According to the standard, there should actually be a certain margin. The usual practice is to brake the vehicle to a standstill when the brakes are pressed halfway. Which one is a problem that many people overlook. Especially for drum brakes and expansion brakes, the brake springs and adjustment screws are all on the outside, which are covered with rainwater and soil for a long time. Sometimes there may be jamming and non rebound phenomena. It's strange that riding with the brakes doesn't consume electricity. So the spring should be cleaned and lubricated in a timely manner.

The above is my personal experience, and I hope to help friends who encounter the above situations. I also hope that all friends can criticize and correct me. Finally, I wish everyone a pleasant cycling experience!

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