New energy sharing vehicle and blockchain

1. The circuit board must be flame-resistant. It can't burn at a certain temperature. It can only soften. This temperature point is called glass transition temperature (TG point), which is related to the dimensional stability of PCB
TG refers to the glass transition temperature of sheet metal. The normal TG is about 130 ~ 150C, and the Tg of high Tg is 170-210c. In addition, FR4 CCL is the abbreviation of glass fiber epoxy resin CCL. FR4 CCL can be divided into the following levels:
First: fr-4a1 CCL
this level is mainly used in military instry, communication, computer, digital circuit, instrial instrument, automobile circuit and other electronic procts. The quality of this series of procts has reached the world-class level, the highest grade and the best performance
Second: FR-4 A2 copper clad laminate
this grade is mainly used for ordinary computers, instruments, advanced household appliances and general electronic procts. This series of copper clad laminates are widely used, and all performance indexes can meet the needs of general instrial electronic procts. It has a good price performance ratio. Can enable customers to effectively improve the price competitiveness
Third: FR-4 A3 grade copper clad laminate
this grade copper clad laminate is a FR-4 proct specially developed and proced by our company for home appliance instry, computer peripheral procts and ordinary electronic procts (such as toys, calculators, game machines, etc.). Its characteristic is that the price has a competitive advantage on the premise that the performance meets the requirements
Fourth: FR-4 A4 copper clad laminate
this grade of laminate belongs to the low-end material of FR-4 copper clad laminate. However, the performance indicators can still meet the needs of ordinary household appliances, computers and general electronic procts. The price is the most competitive, and the performance price ratio is also excellent
fifthly: fr-4b copper clad laminate
this grade is relatively poor in quality stability, so it is not suitable for circuit board procts with large area, and generally suitable for procts with size of 100mmx200mm.

3. Look at where TG is, if it is woodlouse ☭ in the military forum. You should be able to understand.

4.

Evcard is widely used in Shanghai

evcard features:

1. Time sharing leasing: different from general vehicle leasing, the rental settlement is calculated in hours or minutes

2. Whole process self-service: user self-service mode is adopted in the process of car collection, use and return

3. Improve efficiency: a shared car can replace 5 to 10 private cars

4. Short distance demand: fully meet the demand of medium and short distance consumer groups within 10-100km city every day

5. Maybe you don't need it. You don't know what you need
car sharing is a new type of travel mode, and travel is just needed. In addition, most of car sharing are new energy vehicles, which are energy-saving and environmental friendly. Car sharing can effectively rece the number of vehicles on the road, improve the use efficiency of vehicles, and rece the occupation of social public resources. It is an absolute future development trend
I think car sharing is only a transitional stage, and the ultimate stage in the future will be driverless. The car is just a means of transportation, no longer a personal possession (except luxury cars).

6. Before sharing cars, there were cars in Shenyang and Beijing. Recently, Shenzhen airport has started to have famous cars that can be driven, and the price is less than one third of that of taxis. It's also very convenient to use. Just download an app called "Jianxing"

and operate it on the mobile phone, because it's the "T-box" hardware device and software platform provided by the Internet of things. The market application store should not have it now, and I'm not sure. Just ask their company

7. The general brands of sharing cars are domestic brands, but BYD's is better for new energy

8. No, there are new energy vehicles and fuel vehicles in gofun. There are more new energy vehicles in Beijing. After all, the number limit is quite serious. There are many fuel vehicles in other cities. They are all automatic and easy to drive.

9.

Similar to bike sharing, car sharing only requires mobile phones to download the special app software for car sharing, then register an account and verify the information such as ID card and driver's license, and finally submit a deposit to rent the car

it is understood that the current charging method of shared car is 1 yuan / km + 0.1 yuan / min, which will be charged after use

< H2 > extended data

car sharing means that many people share a car, that is, the driver has only the right to use the car, but no ownership, which is a bit similar to renting a car for a short time in a car rental shop. It's easy to go through. You can book a car by phone or online

car sharing is generally through a company to coordinate vehicles, and responsible for vehicle insurance and parking. This way can not only save money, but also help to ease traffic jams, as well as road wear and tear, rece air pollution, rece the dependence on energy, the development prospect is extremely broad

< H2 > reference: network car sharing

10. It's not easy to sell. Battery life, battery life, charging time and convenience. It's only a short-distance walking tool. Heating in winter, power and other problems
any EFI gasoline engine can be equipped with intelligent al fuel control system, which can save half of the fuel cost.