What relay does the bus use?

The bus relay you mentioned refers to the relay specially applied to the control of automobile electrical appliances, which is developed with the automobile electronic and electrical products. Automobile industry is the second largest application market of relays after communication industry, and the sales of automobile relays account for about 18.4% of the total sales of relays. Automobile relays are widely used in automobile starting, preheating, air conditioning, lighting, wiper, EFI, oil pump, anti-theft, audio, navigation, electric fan, cooling fan, electric doors and windows, airbags, anti-lock braking, suspension control, automobile electronic instruments and fault diagnosis. It is one of the most widely used automotive electronic components after sensors. In the future market application, the automobile power supply system will change from 14V to 42V. The development of new electric vehicles and dual-power vehicles will open up new market opportunities for the application of relays in the automobile field.

In 2005, the total number of automobile relays in China could reach 76.6 million.

In 2005, the production and sales of automobiles in China will exceed 6.3 million, among which cars are still the locomotive of rapid growth. It is estimated that the national automobile output will be 3.4 million in 2005. According to the estimated data of automobile output in China in 2005, if the average consumption of relays on each car is 15 and that on each truck and bus is 6, the amount of social repairs will be calculated as 10% of the car ownership, and the consumption of automobile relays (assuming that each truck and bus has 5 maintenance relays and 3 cars), The total domestic demand for automobile relays by 2005 is as follows: In the above figure, we add 8.2 million relays maintained by 20 million vehicles, and it is estimated that the total demand for automobile relays in China automobile market will reach 76.6 million in 2005.

In 2005, China will also become an important relay supply base in the world. It is estimated that the total output of relays will reach 3 billion, accounting for 25.57% of the global total. China's automobile relays are in the stage of multi-variety and small batch. As far as the production of automobile relays in China is concerned, it has not reached the level of large-scale production at present, and the quality gap is small. It can be said that large enterprises and small enterprises go hand in hand and compete for development. Coupled with the diversification of imported models, it is necessary to import a high proportion of relays every year, accounting for more than 60% of the total output of automobile relays. At present, there are more than 100 domestic automobile relay manufacturers, most of which are distributed around major automobile production groups, realizing localized supporting production. Domestic automobile relays are comparable to foreign manufacturers in product design level, but there is a big gap in material application and process technology level; At the same time, foreign automobile relays are basically produced by automatic or semi-automatic production lines, while in China, except for a few companies such as Xiamen Hongfa, which can realize automatic or semi-automatic production, most of them are manually operated and are in the stage of multi-variety and small batch production.

The supply of automobile relays in China has the following characteristics: the supporting market is concentrated in the domestic supporting of imported cars and light buses, mainly from large automobile groups; The maintenance market is obviously regional; The marketing method is mainly direct selling, and there is no perfect distribution system; Automobile relay production enterprises set production by sales and expand production by sales; While expanding domestic demand, with the product quality in line with international standards, we will gradually change from indirect export to direct export, and establish a regional international marketing mix. The production trend of special control relays for automobiles in China is mostly in two aspects. One is to imitate Germany and France (or introduce technology from Germany and France) to support the European model; The second is to imitate Japan and support the Japanese-Korean model.

At present, domestic automobile relay manufacturers mainly include Xiamen Hongfa Audio Co., Ltd., Shanghai Gong Hu Automobile Electric Co., Ltd. and Guizhou Tianyi. Among them, Xiamen Hongfa Company is a professional relay manufacturer with an annual output of 250 million relays. In 2004, the output of automobile relays ranked first in China. At present, the automobile relays produced by Xiamen Hongfa Company include PCB relays, plug-in relays and intelligent combination relays.

The global automotive relay market has exceeded 2.5 billion.

With the improvement of people's requirements for humanization and comfort of automobiles, the production and sales of global automobile relays are on the rise. It is understood that in 2003, nearly 57 million cars were produced worldwide, and the global car ownership reached 740 million. If the average number of relays used per vehicle is 20, the average number of relays used per vehicle for maintenance is 10, and the number of vehicle maintenance is 10%, the world demand for automotive relays will reach 1.88 billion in 2003. By the year of 20 10, if the average production consumption per vehicle is 20 and the maintenance consumption is 10, the market demand for automobile relays will exceed 2.5 billion according to the reference figure of 10%. It can be seen that the development space of automobile relay is very huge. In 2004, the global sales of relays reached 42.7 billion yuan, of which the sales of automobile relays reached 7.9 billion yuan. The following figure shows the estimated global sales of automotive relays from 20065438+0 to 2005: It is understood that Tyco is the main manufacturer of automotive relays worldwide, followed by Omron, Panasonic, Andian, Fujitsu, NEC- Jin Dong, TAIKO and Xiamen Hongfa, among which Xiamen Hongfa Company is the largest supplier of automotive relays in China. The attractive market prospect of automobile relay provides a good development opportunity for relay industry. China automobile relay manufacturers should speed up product research and development, actively participate in international technical exchanges and cooperation, and strengthen market research and promotion.