At present, fast charging generally takes 10-30 minutes, which can provide 50%-80% of sufficient battery capacity to ensure the endurance of the car, while slow charging aims to fully charge the battery. It takes a long time to protect the battery life, at least more than 3 hours.

2. product positioning
120KW double-gun DC charging pile, designed a series of products with family appearance, high brand recognition and dedicated to opening up new markets

3.
1. Analysis of advantages and disadvantages of similar products;
Problems encountered by old products: the existing old products have common appearance style, not prominent features and high cost.
Excellent DC piles need to have the following characteristics: meet the requirements of the national standard, safe and stable, fast charging speed, good heat dissipation performance, convenient operation, easy maintenance, low cost, high brand recognition, beautiful appearance, miniaturization, integration, intelligence, etc. Features.

2. Difficulties in design technology;
(1) Meet the national standard: Meet the GB/T standard. In the early stage of design, you need to have a full understanding of the national standard requirements in order to do a good job in the design and meet the basic requirements of the national standard.
(2) Safety and stability: For high-voltage piezoelectric products, safety is the most important. Stable products can give users a better experience. Electrical appliances, procedures, appearance, structure, and production are all related to product safety and stability.
(3) Fast charging speed: High-power charging piles are usually used, which have higher requirements for electronic circuits, materials, and heat dissipation.
(4) Good heat dissipation performance: heat dissipation is mainly divided into natural heat dissipation, air-cooled heat dissipation, and liquid-cooled heat dissipation.
Natural heat dissipation: It is usually used on products without a large heat source, such as AC piles.
Air-cooled heat dissipation: It is usually used for products with medium heat generation sources, such as DC piles, to dissipate heat by forced air cooling.
Liquid cooling heat dissipation: forced air cooling can no longer meet the heat dissipation requirements of high-power charging piles (HPC). not only power electronic devices, but also terminals and cables need to be cooled by liquid cooling.
(5) Convenient operation: UI interface is simple and easy to understand, intelligent and convenient. When designing the appearance, it is necessary to consider how to use it more conveniently, and the operation is simple and labor-saving.

(6) Easy installation and maintenance: The appearance and structure are all related to the convenience of installation and maintenance.
(7) Cost (cost-effective): Due to the competition in the market, it is necessary to consider the cost of the product, disassembly, structure, process, installation and maintenance convenience, etc.
(8) High brand recognition: by extracting the PI characteristics of the enterprise, simplifying the design and applying it to the product, the unique characteristics of the product are formed, which is simple and easy to remember, thus playing a role in promoting the brand. Can be reflected in (shape, color, quality).

4. User feedback, etc;
Become an industry benchmark case, the overall design meets the requirements of the national standard, has the characteristics of brand identification, safety and stability, intelligent communication, beautiful and firm, convenient operation, leading technology, strong sense of science and technology, and easy maintenance.