Galaxy Technology Empire

In the factory of Pengpai Motor.

Wen Weiping, the president of The Paper Motor Company, is accompanying Huang Haojie on the production line of The Paper 1 motor, looking at the motors being trial-produced.

The Pengpai 1 motor being produced is actually not a rare earth permanent magnet synchronous motor, but a permanent magnet synchronous motor.

After all, the price of rare earths is too high, and they are also strategic materials. The cost of using a rare earth permanent magnet synchronous motor is estimated to be 20,000 yuan. Obviously, this price will make Pengpai Motor less competitive.

Moreover, the power of permanent magnet synchronous motors generally used in electric vehicles is only about 80%.

Huang Junjie felt that there was no need to launch a total power equivalent to 124% of the rare earth permanent magnet synchronous motor all at once.

The ordinary permanent magnet synchronous motor with the self-generating coating can already increase the heavy power to about 103% of the equivalent of the rare earth permanent magnet synchronous motor, killing all motors at once. The even more incredible rare earth permanent magnet synchronous motor, Just treat it as a technical reserve.

The Paper 1 motor is composed of a permanent magnet rotor, a multi-pole winding stator, and a position sensor.

It is a brushless DC motor that uses semiconductor Hall switching elements to achieve electronic commutation, that is, electronic switching devices are used to replace traditional contact commutators and brushes.

It has the advantages of high reliability, no commutation sparks, and low mechanical noise.

The position sensor commutates the current of the stator winding in a certain order according to the change of the rotor position (that is, detects the position of the rotor magnetic pole relative to the stator winding, and generates a position sensing signal at the determined position, which is processed by the signal conversion circuit) Control the power switching circuit and switch the winding current according to a certain logical relationship).

The self-generating coating is electroplated on the silicon steel sheets in the permanent magnet rotor.

The difference between permanent magnet synchronous motors and rare earth permanent magnet synchronous motors lies in the material of the permanent magnets.

Commonly used permanent magnet materials in motors include sintered magnets and bonded magnets. The main types are alnico, ferrite, samarium cobalt, neodymium iron boron, etc.

Among them, samarium cobalt and neodymium iron boron are rare earth permanent magnets.

The permanent magnet rotor in the Pengpai motor uses ferrite permanent magnets.

Ferrite permanent magnet is a kind of permanent magnet mainly made of SrO or BaO and Fe2O3 as raw materials.

Ferrite magnets are hard and brittle and have lower magnetic energy than other permanent magnets.

However, it is not easy to demagnetize and corrode, and the production process is simple and cheap. Therefore, ferrite magnets have the highest output in the entire magnet industry and are widely used in industrial production.

Obviously, for Pengpai motors with self-generated power generation technology, the performance of permanent magnets is no longer the first factor, but price and difficulty of acquisition.

The self-generating coating electroplated on the permanent magnet rotor will not interfere with the work of the motor itself due to the restrained properties of the coating material.

Instead, with the overall spatial displacement of the motor, the magnetic field lines that continuously cut the earth's magnetic field generate current and reversely charge the battery.

For example, the battery supplies 1 kWh of electrical energy to the motor for work, then the self-generating coating will feed back 0.23 kWh of electrical energy to the battery.

Of course, this is under ideal conditions. Wen Weiping and Yang bought an electric car, removed the battery and motor, and then installed the Thor battery and Pengpai motor.

After testing, they found that for every 1 kilowatt hour of electricity consumed by the Pengpai motor, the self-generating coating feeds back 0.15 to 0.18 kilowatt hours of electricity to the battery.

If you drive on the highway, the feedback electric energy can reach 0.18 to 0.21 kilowatt hours.

In other words, even without Thor batteries, Pengpai Motor can already increase the battery life of electric vehicles by 15 to 20% (actual measurement data).

Coupled with Thor batteries, Pengpai Power's electric vehicles are expected to have an actual range of 300 kilometers.

After all, Thor batteries have 11% higher energy density than lithium batteries.

The domestic electric vehicle BYD E6 has a battery weight of about 620 kilograms and a total power storage of 57 kWh. The theoretical range is 360 kilometers and the actual range is 260 kilometers.

Just thinking about it makes my head spin. What is the concept of a 620 kilogram lithium battery, which is equivalent to one-third to one-quarter of the weight of a car.

If Pengpai Power also has so many batteries, the battery life will be incredible.

Think about the 620 kilogram Thor battery, with a total power storage of 117 kilowatt hours, plus the 15 to 20% increase in the Pengpai motor.

The actual range can reach 600 to 630 kilometers, and if the low-speed cruise mode is used, the range can be increased to 750 to 800 kilometers.

The problem is that the production cost of a 620 kilogram Thor battery is 16,700 Chinese yuan. Even if the Thor battery is sold to Pengpai Power for 50 per kilogram, a 620 kilogram battery will cost 31,000 Chinese yuan.

So stacking batteries is not cost-effective.

For the Pengpai Power electric vehicle planned by Huang Haojie, all Thor batteries will not exceed 350 kilograms.

This can not only reduce costs, but also use the extra weight to strengthen the body.

Huang Junjie looked at the sparse workers and empty factory buildings and said:

"Weiping! The Pengpai Motor production line must be improved as soon as possible, and more employees must be recruited. In addition, more suppliers of raw materials and spare parts must be found. Try not to use spare parts from foreign companies to avoid being controlled by others."

Wen Weiping wrote it down and nodded in reply:

"Don't worry, Mr. Huang! I will definitely supervise you."

After Huang Junjie gave instructions to Wen Weiping, he and Yang He came to the electrochemical laboratory. A group of figures wearing full-body protective clothing were busy in the laboratory.

Yang He knocked on the isolation door, and Li Xiang, who was doing experiments, reacted.

Looking at Li Xiang who looked haggard, Huang Junjie frowned: "Didn't I tell you? Work is work, but you should rest when you need to. You will die young sooner or later like this. You are not allowed to work overtime at night."

Yang He on the side suddenly smiled bitterly. The boss Huang Junjie can be said to be a maverick. Other bosses would like their employees to work overtime every day.

But Galaxy is different. Even the production lines that cannot be stopped use three shifts, plus one shift shift. Each employee has at least two days off per week and triples the salary on holidays. It can be said that among Galaxy companies, employees are relatively happy.

"I know, I'm going to rest after finishing this experiment. Boss, I already have some ideas about the compound you calculated and deduced." Li Xiang changed the subject nonchalantly.

"Yes! Take your time with the experiment and pay attention to rest. Our technical reserves can handle it for the time being." Huang Haojie nodded.

He turned to Yang He and asked, "Mr. Yang, how is your motor design going?"

"Mr. Huang! Come with me." Yang He took Huang Haojie to the electrical engineering laboratory nearby.

There were also four people working inside. When they saw Huang Junjie, he quickly put down what he was doing.

"Mr. Huang!" "Mr. Huang!"...

After all, engineers are more straightforward, and they sincerely admire Huang Haojie, who invented the Thor battery and Pengpai motor.

"Okay! Keep busy, everyone." Huang Haojie often works in various laboratories and is familiar with these engineers and researchers.

"Mr. Huang! Look, this is the self-generating induction motor we designed." Yang He said, pointing to a squirrel cage-shaped motor.

Huang Haojie looked at it and found that the self-generating induction motor was much more complicated than the permanent magnet synchronous motor. He raised his head and asked:

"What about efficiency and other performance?"

Yang and Rushu Jiazhen reported: "The efficiency is about 90 to 92%, and the speed exceeds 9500 to 9600 rpm..."

The reason why Huang Haojie asked Yang He to develop induction motors was mainly for future high-end models.

After all, if you want to have strong explosive power and start quickly, an induction motor is essential. The disadvantage of an induction motor is its low efficiency, especially at low speeds.

Therefore, domestic electric vehicle companies mostly use permanent magnet synchronous motors, while foreign companies such as Tesla mostly use induction motors.