With the Development of Electric Vehicles, the Industrial Connector Industry Has Also Ushered in Opportunities

PublishTime： 2023-04-01 Article Source：valnk Industry information

Although China's connector industry started late, the connector market concentration is not high, and there is still a certain gap between the industry's technical level and developed countries. However, China's connector industry has broad space and great development potential, and there is still much room for improvement in the future. As the largest connector market, China is the most powerful driving force of the global connector market.

At present, electric vehicles seem to have disadvantages such as insufficient power, low safety and inconvenient charging, but on the whole, electric vehicles have become a new industrial growth point and an irresistible new trend. This is undoubtedly a rare new opportunity for our connector industry. According to expert estimates, each vehicle will use 600 to 1000 electronic connectors in the future, much more than now. On the other hand, in the era of electric vehicles, the use of high-capacity lithium batteries is common to the diversified design choices of electric vehicles and hybrid vehicles. Therefore, the electrical structure of vehicles needs to be comprehensively improved, and the connector bears the brunt.

The above growth rate shows that manufacturers of electric vehicles, household and highway charging stations, as well as charging cables and other related new products will face huge market opportunities. The development trend of electric vehicles is accompanied by the change of fuel. When traditional vehicles still rely on petrochemical fuels, avant-garde electric vehicles will be connected with a more efficient new power transmission infrastructure - smart grid. With the advent of electric vehicles and related equipment, in order to meet the increasing market demand, a large number of software, hardware and software applications also came into being. However, in addition to pursuing faster R & D speed, in order to gain a foothold in this emerging market, consumers' safety of electric vehicles and related application parts is still the primary consideration.

The connector of the car includes the combination of plug and socket, as well as the combination of connector and connector. Its main function is to transmit electric energy from the power supply outside the car to the inside of the car. The equipment will contain a rubber shell contact, which can be used as the connection of power, grounding, communication and navigation control. In addition, the shell material used for the connector must be polymer insulating material, and must have specific combustion grade, electrical performance and heat resistance.

In order to ensure the safety of drivers and maintenance technicians in high pressure environment, a series of complex electrical system factors must be considered in order to ensure its reliability and best effect. The connection system is the key part of high-voltage electrical connection, especially the connection line design of high-power line. In terms of safety, two aspects should be paid attention to in the design of high-voltage connection system, namely, high-voltage interlocking ring (hvil) and environmental sealing of connector (avoiding short circuit between high-voltage terminals when the vehicle is used).

The sealing of high-voltage line is the key, because the absence of sealing will cause failure modes such as short circuit. As you know, water is not compatible with electricity. The guide rail seal and the surrounding seal of the connector can make the connector truly sealed, so as to ensure that moisture cannot enter and will not cause overheating or sparks. Compared with the traditional 12V system, the high-voltage system requires a stronger seal, because the higher the voltage, the greater the possibility of fire jump.

A high voltage interlock loop (hvil) is a major feature of a high-power connection system. It is necessary for live tripping and power failure of connectors used in power electronic equipment. In order to ensure that the system is not energized, special consideration must be given to the disconnection of the system. When the connector is about to be disconnected, the high-voltage interlock circuit sends a signal to cut off the power supply in time. This function is necessary when an accident occurs or maintenance personnel needs to cut off the power supply for vehicle repair. It can help protect passengers, maintenance personnel, or the first responder of the accident.

Future The electric vehicle industry has a huge demand for connectors. With the growth of automatic driving, consumer demand for cars, and the increasing popularity of onboard information entertainment, the demand for automotive connectors will continue to expand. The industry involves heavy machinery, manipulator, handheld measuring equipment, etc. in the future, with the improvement of automation, the performance of connectors will continue to improve. Electric vehicle connectors have high requirements for safety. Considering that the survival process of vehicles may involve factors such as electrical circuits, batteries, mechanical interference, and external fire sources, the cause analysis is very complex.

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