More and more new energy vehicles are entering ordinary households. For the convenience of charging, owners often buy rechargeable guns. With a charging gun, the owner will first consider safety. Safety issues are also a crucial factor affecting the development of electric vehicles, and it is very likely to restrict the healthy development of China's electric vehicle industry.
It is reported that the National Energy Administration has issued the "Notice on the Special Inspection of Electric Vehicle Charging Infrastructure Safety" recently, and organized a special inspection on the safety of electric vehicle charging infrastructure nationwide. Charging equipment manufacturers are also working hard to create the safest charging guns.
To build a safe charging gun, not only the core technical support inside the control box, but also reliable material support, the material requires flame retardant, environmental protection, wear resistance, weather resistance, impact resistance, high oil resistance, UV resistance, high and low temperature resistance. Next, follow Xiaobian to learn about the secrets of charging gun selection.
The charging gun is used as a bridge between the connecting car and the pile. The quality of the charging gun directly affects the safety of the charging experience. Therefore, it is especially important to select a high-quality charging gun. So how do we choose a quality rechargeable gun?
At present, the quality of the charging guns on the market is mixed. Whether it is a charging operator, a car company or a car owner, you should not take it lightly when purchasing a charging gun. You must purchase well-known brand products with good performance in the formal channels. In terms of materials, it is not only safe and waterproof, but also durable. At the same time, the products must have excellent insulation, flame retardant and high temperature resistance.
The core component of a portable car charging gun is the control box. Although it seems to be inconspicuous, in fact, there is a core technology in the control box. There are several items related to the invention patent. Therefore, when consumers buy a car charging gun, they can't just look at the price of the car charging gun. It is too cheap to buy.
First, on the technical nature of charging gun design
The charging gun is not only connected to the electric car and the charging pile, but also is tied to the safety of the user when charging. As an excellent charger gun, not only must the charging performance be good, but also an absolutely safe charging gun.
The charging gun should not only be safe and waterproof but also durable in terms of materials. At the same time, it must have excellent insulation, flame retardant and high temperature resistance. Before it is put into production, it must be tested continuously and all the performances are qualified before it can be put into use. !
A good charging gun not only has a good material selection, but also a well-designed design. The design of the handle should conform to the principles of human mechanics. In this case, it will be convenient to use, and it must have a temperature monitoring function and a locking mechanism, so that the safety of charging can be fully ensured.
Charging guns have such demanding requirements. Let's take a look at the companies that do electric vehicle charging guns.
In the process of designing the charging gun, there are strict requirements on the material, and it is necessary to attach great importance to the stability and safety of the design. In general, its material needs to have the following characteristics:
1. The material of the charging gun casing not only requires good insulation performance, but also high CTI, high glow wire, especially fast charging and charging pile. The high voltage current requires higher performance of the material.
2, excellent weather resistance, anti-oxidation and anti-UV. Since the charging piles are all in an open space, even if it is exposed to the sun, rain, and rain, the charging gun should have excellent weather resistance to ensure safety during long-term use.
3, super low temperature toughness resistance, -40 ° C can maintain good impact performance.
4, high flow, with excellent processing performance.
5, to meet the needs of various color preparation, designers need to choose the right material according to their own design needs.
Second, the selection requirements of the charging gun
1. Mechanical performance insertion force test vehicle rolling test -25 °C × 16h low temperature impact service life 10000 times
2, temperature resistance performance 80 ° C × 168h heat aging 100 ° C × 1h heat storage test
3, flame retardant properties UL94, V-0.GWFI ≥ 650 ° Cor850 ° C
4, electrical performance insulation resistance ≥ 5MΩ (500Vd.c) CTI ≥ 175V dielectric strength: no flashover or breakdown phenomenon
Third, the material characteristics
1, halogen-free flame retardant
2, the surface gloss is high
3, excellent electrical insulation properties
4, excellent mechanical properties
Fourth, the selection of materials recommended
Plug and socket
Option 1: PBT-GF25FR, PBT-GF30FR
ØMaterial characteristics 1. Excellent mechanical properties 2. Excellent electrical insulation properties 3. Excellent thermal properties 4. Excellent flame retardant performance
Option 2: PA66-GF25FR, PA66-GF30FR
ØMaterial characteristics 1. Excellent mechanical properties 2. Excellent electrical insulation properties 3. Excellent thermal properties 4. Excellent flame retardant performance 5. High CTI value
Charge gun housing solution: PCFR weather resistant flame retardant PC
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Zhejiang Casnovo Materials Co., Ltd. , https://www.casnovonewenergy.com