Electric bike are hot sale in Europe and USA

Electric bike are hot sale in Europe and USA.Electric bicycle refers to a vehicle that uses a battery as an auxiliary energy source on the basis of an ordinary bicycle, and is equipped with a motor, a controller, a battery, a turning handle and other control components and a display instrument system.

 

Most electric bicycles use a hub-type motor to directly drive the front or rear wheels to rotate. According to different output speeds, these in-wheel motors are matched with wheels of different wheel diameters to drive the whole vehicle, and the speed can reach 20km/h. Although the shape of these electric vehicles and the installation location of the battery are different, their driving and control principles have commonalities. This type of electric bicycle is the mainstream in electric vehicle products.

China’s electric bicycles have always been in the world’s leading position in the application of torque sensor technology and integrated circuit controller technology. Powerful companies have been applying integrated electronic and digital technology to controllers, motor valve control, charging control and other components. Intelligent Type electric bicycles will be the commanding heights of future development.

For the development history of electric bicycles in China, the industry generally agrees that there are three development stages: the initial stage of electric bicycles, the initial production scale stage, and the super-speed development stage.

The initial stage of electric bicycles is also known as the early experimental production stage of electric bicycles, which is from 1995 to 1999 in terms of time. This stage is mainly to explore and research the key technologies of the four major components of electric bicycles, motor, battery, charger and controller. In terms of R&D and production, it is mainly based on the spontaneous collection of information, tracking technology, organization of market observation, and small-batch market trial launch by production enterprises, which also makes electric bicycles begin to enter the vision of consumers, and they are gradually recognized and accepted by them. From a technical point of view, in the early electric bicycles, the new battery can only travel about 30 kilometers on a single charge, the battery life is short, the climbing ability is poor, and it is easy to wear, and the motors are also brushed and toothless motors. However, the accumulation in this period has laid the foundation for the current scale of industrialization in terms of talents, technology and product research and development.
The reason why the second stage is called the initial production scale stage is that there are several opportunities to promote electric bicycles during this time period, so that the electric bicycles that were struggling in the initial stage suddenly ushered in the spring, and more Yes, the development of the industry has entered a large-scale, and the most valuable of these opportunities are the “ban on motorcycles” in various cities and the “SARS” in 2003
This time period is generally recognized as the period from 2000 to 2004. During this time period, with the breakthrough in key technologies and the continuous improvement of the performance of electric bicycles, electric bicycles have become the most popular among motorcycles and bicycles. Alternative products, which are fast, environmentally friendly, convenient and cheap, have also stimulated the market’s appeal for electric bicycles. In the growing market demand, the companies that previously developed and produced have risen rapidly, and some new companies have also begun to enter, and their investment in electric bicycles has also continued to increase, resulting in rapid expansion of production capacity (see Appendix 1.1 for details). Moreover, the companies that jumped up quickly during this time period are all large-scale operations, leaving those older generation R&D and production companies behind. However, large-scale enterprises represented by some well-known brands have been formed, and according to the differences between the north and the south, three major industrial clusters represented by Wuxi, Zhejiang and Tianjin in the industry have also been formed.

The third stage is from 2005 to the present. This stage is the super-speed development stage of China’s electric bicycles, which is dubbed “the blowout stage” by the industry. During this time period, with the fierce competition among enterprises, the progress of technology and the diffusion of new technologies have been greatly stimulated, the technical level of the whole industry has been greatly improved, the life and capacity of the battery has increased by 35%, and the motor has changed from a single brush to a Gear motors have developed into the mainstream of brushless high-efficiency motors, with a lifespan increased by 5 times, efficiency increased by nearly 30%, and climbing and load capacity increased by about 3.5 times. While the performance is improved, the manufacturing cost is also greatly reduced, and the price power has dropped to 21% of the original; in the controller system and the charging system, the technical level has also been greatly improved. In particular, great progress has been made in battery technology and motor technology. The technological breakthrough of lead-acid batteries for electric vehicles has taken the lead in the world, and the Zhejiang Changxing Plate, Kang Lien, Jiangsu plate represented by Shuangdeng and Guangdong plate represented by Ruida. The battery also has a single lead-acid battery that has evolved into multiple types of high-performance batteries, and the emergence of lithium batteries has further driven the development of electric bicycles, especially simple models. In terms of motors, the invention of permanent magnet brushless motors has significantly accelerated the pace of industry development. The key to the performance of the motor is the performance of the strong magnetic material. Among the various permanent magnet materials, the rare earth permanent magnet material has the most superior performance. my country is recognized by the world as a big country in rare earth resources and a power in the manufacture of rare earth products. Due to the good performance, low price and strong manufacturing capacity of rare earth strong magnetic materials, the BLDC (Brushless DC Permanent Magnet Motor) system, which is expensive in the international market, has been widely used in Chinese enterprises, and the electric bicycle industry has obtained a unique resource advantage. Judging from the total production and sales volume of the industry, in 2005, the total output of various light electric vehicles (including electric bicycles) of hundreds of enterprises across the country is expected to exceed 9 million, and about 2 to 3 million are exported, achieving an industrial output value of 200 million. 100 million, profits and taxes of about 6 billion yuan, and employment of nearly 1 million people in related production and service fields. China’s light-duty electric vehicle production and sales have accounted for more than 90% of the world’s, and China has become the world’s largest producer, consumer and exporter of light-duty electric vehicles.
Birth history
In China, electric bicycles have been developed since the 1980s, and their structure has been continuously improved. It was not until the beginning of this century that electric bicycles were widely popularized and entered countless homes. Those who have made great contributions to the development of electric bicycles include: Mr. Wang Peiyuan, former director of Shanghai Bicycle Research Institute, and Li Zhijian, chairman of Hangzhou Jianye Electric Vehicle Co., Ltd., etc. Electric bicycles are already a means of transportation for energy saving and environmental protection.
Development Events
In 1983, Shanghai No. 2 Bicycle Factory successfully trial-produced the permanent brand DX-130 electric bicycle, which is the first electric bicycle recorded and industrialized in my country. It uses a 150W column motor and a 24V common lead-acid battery for passenger cars. This car was put into production in 1984. By 1991, a total of 45,000 units were produced, of which 805 were exported. In 1995, Tsinghua University developed an electric bicycle using in-wheel motors.
In 1999, Qianhe in Shanghai, Duiker in Suzhou, and Continental Pigeon in Nanjing successively made breakthroughs in the research and development of electric bicycles. The electric bicycles they produce all use 36V/10Ah maintenance-free lead-acid batteries and rear-wheel-drive in-wheel motors, which have ended years of lingering in various performance indicators, and have been recognized by the market for the first time. Since then, electric bicycles have entered the road of rapid development.
On May 28, 1999, the National Bureau of Quality and Technical Supervision issued the national standard GB17761-1999 “General Technical Conditions for Electric Bicycles”, which was implemented on October 1 of the same year. This standard is revised on the basis of the original light industry standard QB “General Technical Conditions for Electric Bicycle Safety”.
In 2001, the National Bicycle Information Center held an electric bicycle information exchange meeting and an electric bicycle zipper (mileage) competition. This competition strongly promoted the development of electric bicycle technology.