Summary of advantages of Chinese motor stator manufacturers and Chinese starter stator manufacturers

With the popularity of China’s new energy electric vehicles, the advantages in the field of auto parts have gradually opened up with peers, especially in the field of stator manufacturing has a unique geographical advantage.

The geographical advantages of Chinese stator manufacturers are summarized as follows:

Item		Advantage
Technological innovation capability advantage	Technological achievement	Chinese enterprises have made remarkable breakthroughs in advanced manufacturing technologies such as flat wire stator technology and insulating paper foam forming technology. The flat stator technology can increase the power density, reduce the copper consumption and improve the heat dissipation performance of the motor. The foam forming technology of insulating paper reduces the drip paint process and improves the production efficiency and quality.
Technological innovation capability advantage	Research and development capability	More and more enterprises and scientific research institutions are increasing their investment in stator technology research and development, actively carrying out industry-universation-research cooperation projects, and constantly improving the performance and quality of stator to meet the demand for high-performance motors in new energy vehicles, wind power generation, high-end equipment manufacturing and other fields.
The advantage of perfect industrial chain	Sufficient supply of raw materials	China is a big producer of the main raw materials required for stator production such as copper and silicon steel, and its rich raw material resources provide a stable supply guarantee for stator production, reducing raw material procurement costs and supply risks.
The advantage of perfect industrial chain	Complete parts	China has a complete motor industry chain, in addition to stator manufacturers, there are a large number of upstream and downstream enterprises, such as rotor manufacturers, insulation material suppliers, motor controller manufacturers, etc., can easily achieve the supporting parts procurement and collaborative production, improve production efficiency and product quality stability.
Manufacturing capability advantage	Leading production scale	China’s stator production enterprises have the ability and experience of large-scale production, and can quickly respond to market demand to meet large orders from domestic and foreign customers. At the same time, through continuous optimization of the production process and technology, the production efficiency is improved and the production cost is reduced.
Manufacturing capability advantage	Advanced production equipment	In recent years, Chinese enterprises have actively introduced and independently developed advanced production equipment and automatic production lines, such as high-speed winding machine, automatic wire insertion machine, precision welding equipment, etc., which has improved the precision and consistency of stator production and improved product quality.
Cost advantage	Labor costs are relatively low	Although China’s labor cost has risen in recent years, it still has a certain cost advantage compared with developed countries. In the stator production process, some labor-intensive processes such as winding, wiring and so on still need a lot of labor, relatively low labor costs help to reduce production costs.
Cost advantage	The effect of industrial cluster is remarkable	China has formed a number of motor industrial clusters, such as the Yangtze River Delta, Pearl River Delta, Beijing-Tianjin-Hebei and other regions, industrial clusters between the enterprises through the sharing of resources, technical exchanges and collaborative cooperation, reduce production costs, improve the overall competitiveness。
The advantage of abundant human resources	The reserve of technical personnel is sufficient	With the popularization of higher education in China and the development of motor related professions, a large number of motor professional and technical personnel have been trained, including R & D engineers, process engineers, quality engineers, etc., providing strong talent support for stator production enterprises.
The advantage of abundant human resources	Skilled workers are plentiful	In the long-term motor production practice, trained a large number of skilled technical workers, they have accumulated rich experience in all aspects of stator production, to ensure product quality and production efficiency.

As an important part of the car, the stator is mainly used in the drive motor and starter, to understand the stator, we must first understand the difference between the drive motor and the starter;

Drive motor	VS	starter
It is mainly used to drive vehicles to continue driving, and is a power source for electric vehicles. For example, in pure electric vehicles, the drive motor converts electrical energy into mechanical energy, pushes the vehicle forward or backward, and can adjust the output torque and speed in real time according to the speed, road conditions and driving needs.	Applicatiion	The main function is to start the engine. When the key is turned or the start button is pressed, the starter works, driving the engine crankshaft to rotate, so that the engine starts to run, once the engine starts, the starter stops working.
Long working hours. In the process of vehicle driving, as long as the vehicle is in a power drive state, the drive motor continues to work	Working hours	The working time is very short, usually only a few seconds or ten seconds when the engine starts.
Wide power and torque adjustment range. It can output different torques in different speed ranges, for example, it can output larger torques in the starting stage, so that the vehicle can start quickly; It can maintain a certain power output at high speed to ensure the speed of the vehicle.	Power and torque characteristics	Need to have a large starting torque, can overcome the static friction and compression resistance of the engine, so that the engine starts smoothly, but it generally does not need to have a wide range of power and torque adjustment.
The speed range is wide. It can stabilize the output torque at a lower speed, and can also reach a higher speed to meet the requirements of different vehicle speeds.	Speed range	The speed is relatively low, mainly in order to be able to smoothly drive the engine crankshaft rotation, so that the engine starts.

The difference between drive motor stator and starter stator;

Drive motor stator	VS	Starter stator
The stator of drive motor is one of the core components of drive motor. The main function is to convert electrical energy into mechanical energy to provide continuous power for vehicle driving. In new energy vehicles, the rotating magnetic field generated by the stator of the drive motor interacts with the rotor, so that the rotor rotates, and then the wheel of the vehicle is driven by the transmission device, so that the vehicle can move forward, backward or maintain a certain speed.	Functions and application scenarios	The main function is to generate a rotating magnetic field when the engine starts, which drives the rotor of the starter to rotate, and the rotor transmits power to the crankshaft of the engine through gear transmission and other ways, so that the engine starts to run. Once the engine is started successfully, the starter stator stops working.
The stator core is usually stacked with silicon steel sheets to reduce iron consumption. The silicon steel sheet is punched into a ring punch with a tooth groove, and the armature winding is embedded in the groove. Stator windings are generally composed of polyphase windings, such as three-phase windings, to generate a rotating magnetic field. In order to improve heat dissipation and insulation performance, the stator winding is usually wrapped with high-performance insulation materials and installed in the slot of the stator core.	Structure and material	It is generally composed of a frame, a stator core, a coil and other structural parts that fix these parts. The stator core is usually composed of 0.35~0.5 mm thick silicon steel sheets with a ring punching groove coated with insulating paint. The coil forms the circuit of the generator, and its winding method and connection method vary according to the type of starter and design requirements.
Higher efficiency and power density are needed to convert more electrical energy into mechanical energy and improve vehicle driving range and power performance. At the same time, the stator of the drive motor also needs to have good speed regulation performance and control accuracy, and can adjust the output torque and speed in real time according to the driving demand of the vehicle.	Performance requirement	It is required to produce enough starting torque in a short time to overcome the static friction and compression resistance of the engine, so that the engine can start smoothly. In addition, the reliability and durability of the starter stator are also very important, because it needs to maintain stable working performance during frequent start-up processes.
The continuous operation of the vehicle during the driving process requires high temperature, vibration and electromagnetic interference. Therefore, the heat dissipation design and electromagnetic compatibility design of the stator of the drive motor are very critical to ensure that the stator can operate normally under harsh working conditions.	Working conditions and environment	The working time is short, but it needs to withstand large current shock and mechanical stress at the start moment. At the same time, the starter stator is usually installed in the engine compartment, the working environment is relatively harsh, and it needs to have good corrosion resistance and vibration resistance.