What is the scope of use and correct use of low-temperature lithium-ion battery packs?

What is the scope of use and correct use of low-temperature lithium-ion battery packs?

The scope of use and correct use of low-temperature lithium-ion battery packs. Low-temperature lithium-ion batteries refer to operating temperatures below -20°C, and low temperatures have an impact on the positive and negative electrodes, electrolyte, and adhesives of lithium iron phosphate battery packs. The exploration and research on the low-temperature resistance of lithium-ion batteries by industry enterprises and scientific research institutions mainly focus on the process improvement of the existing positive and negative materials, and by increasing the local environmental temperature of the battery to create conditions for the battery to work at low temperatures.   The scope of use of low-temperature lithium-ion battery packs   In recent years, the use of lithium ion batteries has become more and more widespread....

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Why is the 4 wheel electric scooters still using Hall sensors ?

Why is the 4 wheel electric scooters still using Hall sensors ?

Recently, I heard that 4 wheel electric scooters like Benjamin’s have become popular again. It seems that they are used as transportation vehicles abroad. This is not surprising to me. What surprised me is that the industry uses Hall-powered drives instead of No sense drive! After Benjamin launched the open source design of non-sense square wave and non-sense foc, we believe that 90% of people will try to transplant to cheap chips, especially domestic m0 cores. In addition, the parameter measurement function inside is used as a symbol of independent intellectual property rights in advertising. This is just as normal as turning foreigners' open source into closed source. I asked my friends: Many people have developed open source solutions, and...

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What should you pay attention to when choosing skateboard motor bearings ?

What should you pay attention to when choosing skateboard motor bearings ?

Skateboard brushless DC motor bearing, also known as motor bearing or motor bearing, is a special bearing specially applied to the motor or motor. The bearing used in the motor is a part that supports the shaft. It can guide the rotation of the shaft and can also withstand the idling parts on the shaft. The concept of the bearing is very broad. There are four types of bearings commonly used in motors, namely rolling bearings, sliding bearings, joint bearings and oil-impregnated bearings. Common motor bearings are rolling bearings, and DC brushless motors use rolling bearings. Today we will briefly analyze the precautions when selecting bearings for brushless DC motors: Used in a low temperature environment, the design of the...

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How to make the voltage of the electric skateboard brushless motor more stable ?

How to make the voltage of the electric skateboard brushless motor more stable ?

The brushless DC motor is connected to electricity during use, and the efficiency of the motor can be higher when the power is turned on. The voltage of the motor also fluctuates slightly during operation, but overall, the voltage is still very stable. How to make the voltage of the electric skateboard motor more stable? 1.Connect a suitable resistor in parallel with both ends of the brushless DC motor resistance. According to the principle of resistive load, the resistance value changes after heating to obtain a non-linear resistance characteristic, which makes the field resistance line and the initial segment of the excitation characteristic larger. Obtain a point of intersection with the no-load characteristic curve. 2.Use generator automatic excitation adjustment device,...

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