Due to their portability and high cost performance, more and more people have chosen to purchase electric vehicles as short-distance transportation tools. There are so many electric vehicles on the market, and the prices are from seven to eight to seven or eight hundred. If you want to buy a car that you like, you won't believe it. If you want to be reliable, some basic knowledge of electric cars must be clearly understood.
Which points?
The battery is the heart of the electric vehicle and determines the length of the electric vehicle's mileage. Electric vehicles generally use lead-acid batteries or lithium batteries, of which mainly lead-acid batteries. Lead-acid batteries are low cost and cost-effective. Most of the electric bikes in the market are still sealed lead-acid batteries, which do not need to be frequently replenished with water and maintenance-free. However, it is easy to age and has a short service life.
Lithium-ion batteries have large specific energy, high specific power, small self-discharge, no memory effect, good cycle characteristics, and can be quickly discharged. They have high efficiency, small size, and light weight, and are currently the focus of research and development for many electric vehicle companies. However, the price of electric vehicles equipped with lithium batteries is significantly higher than that of lead-acid batteries. Therefore, consumers should decide which electric vehicle to buy based on the actual situation and demand.
How to choose the battery?
It is not enough to understand the battery classification of electric vehicles. The most important thing is to learn how to distinguish the advantages and disadvantages of batteries.
1. Whether the product vehicle battery's product mark is complete: including the manufacturer's name, product specification, model, date of manufacture, trademark; check whether the internal and external signs are the same, especially check whether the product has aspirational goal, production date, etc.
2. Battery appearance: Check for signs of deformation, cracks, scratches, and leakage. The battery terminals should be clean, free from corrosion, and the markings should be clear.
3. The rated capacity of the electric vehicle battery product is marked: The greater the rated capacity of the battery, the longer the battery discharges. It is best not to purchase a battery without a nominal mark. Note whether it is an electric vehicle only. If there are multiple capacity tags, the rated capacity shall prevail.
4, it is best to buy brand batteries, such as Chaowei, Tianneng and so on. Brand batteries are generally provided by professional battery manufacturers, with guaranteed quality and good after-sales service.
How to see the voltage?
Electric vehicle batteries are generally 12V, 48V is 4 batteries, 60V is 5, and 72V is 6. In terms of technical content, the higher the voltage, the better the performance and economy of electric vehicles. The overall performance of an electric vehicle equipped with five or six batteries is far better than that of an electric vehicle equipped with four batteries. The long-term use of electric vehicles with four batteries is also more economical and convenient than the four-cell battery. However, the production of high-voltage electric vehicles has a relatively high degree of difficulty. At present, electric vehicles equipped with four batteries are still on the market. High-voltage electric vehicles are generally more expensive and require matching voltage regulators, controllers, and motors, but they are powerful, fast, and far away.
How much is life?
Electric vehicles need to pay attention to the cruising range of the battery. In general, a 48V 500W new 20AH car can run about 55 kilometers; a 36V 250W 10AH new car can run 35--42 kilometers; a 48V 250W 10AH new car can run 50-60 kilometers. Theoretically, the stronger the electric vehicle is, the better the battery life can be, considering the purchase cost and travel distance. Consumers should rationally measure it.
What is the brake?
Riding on electric vehicles, safety is undoubtedly a top priority; and braking performance directly determines the safety factor of electric vehicles.
Electric vehicle brakes are generally divided into holding brakes, up brakes, disc brakes, iron brakes, and drum brakes.
Holding brake: mostly used for low-end electric vehicles, sound harsh, poor braking effect; up brake: similar to the holding brake, but the top and rear without screws, braking is relatively stronger than the holding brake; disc brakes: mostly for the former Brakes, brake discs, calipers, no oil pumps on the brake levers, ordinary brake lines, strong braking effects, iron brakes: good braking, no brake sounds, drum brakes: in five systems, drum brakes The cost is relatively modest, debugging is relatively simple, and the safety performance is also among other things.
Can you sign?
If the electric vehicle of another cow cannot be on the card, once the local electric vehicle has been severely inspected, only the detained one will have to ride out. Therefore, it is very necessary to understand the current national standard of electric vehicles and related local policies.
According to the “General Technical Conditions for Electric Bicycles†promulgated by China in 1999, it is stipulated that the maximum speed of an electric bicycle is no more than 20 kilometers per hour, and the weight of the entire vehicle is no more than 40 kilograms, which is currently valid as a national standard for electric bicycles.
Steel forgings improve the internal structure and mechanical properties of the forgings during the forging process. Therefore, forgings have high mechanical strength, are not easy to break, and improve toughness. They are generally used in parts that require large stress, or parts with harsh working environments, such as gears or engine shafts. In addition to improving mechanical properties, forging has the advantages of high utilization of materials and high productivity. For some parts that require precision assembly or high precision, it can be achieved by secondary precision CNC machining. However, due to the characteristics of the forging process, forging is not suitable for the production of workpieces with complex shapes, or requires a relatively large amount of subsequent CNC machining to achieve products with complex shapes.
For forged parts, the most important are the three processes of mold development, forging processing and secondary precision CNC processing. And these three processes are all completed in-house, we can better ensure product quality and production delivery. We take quality first and service first for our customers.
Steel Forging Parts, Steel Forgings, Carbon Steel Die Forging, Carbon Steel Forging Parts, Carbon Steel Forgings, Iron forgings, Cast Iron Forging, Steel Forging, Iron Forgin, Metal Forging
Shenzhen SCZY Technology Co.,Ltd , https://www.szsczycasting.com