Tips for analyzing and choosing an electric vehicle purchase.
Daily close travel (within 40km-50km per week), commuting and other occasions.
Brand: According to the understanding in the electric vehicle forum, the first-line well-known brands will be about 10% more in the same type of electric vehicles. However, first-line brands have advantages in terms of technical strength and after-sales.
The existing EV brand rankings and market share are as follows, and the information comes from Zhongguancun**.
Performance: This section provides an understanding of the components and functions related to electric vehicles
Brakes (brakes):
It's about safety, it's important;It is divided into disc brake and drum brake, including front and rear drum brake, front disc rear drum, front and rear disc brake;
Drum brake: advantages: low cost, large absolute braking force;Disadvantages: poor heat dissipation, easy heat exhaustion leads to weakened braking force.
Disc brake: advantages: fast heat dissipation, light weight, fast braking, easy adjustment;Disadvantages: high cost, absolute braking force slightly lower than drum brakes.
Controller:
Function: 1. Drive the motor to rotate.
2. Change the motor driving current under the control of the handlebar, so as to realize the adjustment of the motor speed.
3. Cut off the output current under the control of the brake handle (brake handle) to achieve brake control.
4. Detect the battery voltage, when the voltage stored in the battery is close to the "discharge termination voltage", the power is insufficient through the controller panel (or instrument display panel) to remind the rider to adjust his stroke, when the termination voltage is reached, the signal is sent to the comparator through the sampling resistance, and the protection signal is output by the circuit, so that the protection circuit issues instructions according to the preset program to cut off the current to protect the charger and the battery.
5. Over-current protection, when the current is too large, the over-current protection circuit will act to stop the motor and avoid the harm caused by over-current to the motor and controller. In addition, some controllers also have functions such as anti-speeding protection and patrol speed limit.
Generally according to the motor adaptation, the common motor size: 350W, 400W, 450W, 500W, Yadea 600W, 800W, 1000W, etc.;As long as the controller is not weightless, it will not be broken if it is too funny to climb hard.
Motor:
Convert the electrical energy of the battery into mechanical energy to drive the wheels of the electric vehicle to rotate to achieve the purpose of continuous riding of the electric vehicle
Recommended brands: Bosch Motors, etc.;
In terms of later maintenance, as long as the motor does not enter the water, it will not break.
Battery (distance):
The battery capacity is generally 48v20ah, 60v20ah 32ah, 72v20ah 32ah;Commonly used batteries for electric vehicles are 36V12Ah, 48V12Ah, 48V20Ah, 48V24Ah, 48V28Ah, recommended for urban commuting: 60V20A, no need to buy 72V high power, generally speaking, the battery range of 48V12Ah is about 30km, 48V20Ah is about 40km, 60V20Ah is about 55km, and 60V30Ah is about 75km. These values are only an approximation, if the body is lighter or uses a lighter lithium battery pack, and the driving Xi is better, then the battery life will increase accordingly, and the cold weather or the vehicle load is large, then the range level will be reduced.
Lead-acid: super energy and natural energy, there is no difference between normal use experience;
Lithium battery: Tianneng, Xingheng, Panasonic, Chaowei, etc. With the same voltage of 60 (to determine the speed) * 20 battery capacity (to determine the mileage), lithium battery is lighter than lead-acid battery;
Plastic parts baking paint: wind and sun fade peeling, bump easy;
Vehicle line: the line route is made of better materials, and it is not easy to age the line for a long time.
Frame: Whether the frame is of high quality, the iron parts will rust when exposed to water after a long time in the wind and sun, and the material used in a good frame is relatively thick. The frame is also about load-bearing.
Anti-theft: GPS+AGPS dual anti-theft.
Headlights: halogen headlights and LED headlights, there is a difference between single and double lights on the number, as well as the so-called lens headlights, light-sensitive lights, and night travel is also guaranteed.
Tires: wear-resistant, not easy to slip when braking in rainy days.
Bucket cushion: Comfort.
Car cover: When it rains, it is good for the lights and horns.
*: Generally** within 2000-5000, online shopping for electric vehicles needs to take into account the freight (I understand that Jingdong is about 200), you can also consider local buyers, self-pickup. It can also be called cargo pulling, according to the distance, generally add about 100 yuan;
Where to buy:
Electric car city *** car purchase is the most expensive, followed by specialty stores, car dealers again, and small street shops are the cheapest.
In addition, the ** of electric vehicles in different cities is not the same, Hangzhou and Shanghai have the same model, and the quality of second-hand cars needs to be considered when purchasing, especially the battery, which requires the original owner to provide proof of purchase to ensure the safety and quality of the car.
Timing:
7.8.September (summer vacation) is the peak period for traditional electric vehicles, and it is also the most expensive time to buy a car;Buying a car before the Spring Festival is also;The purchase of electric vehicles generally chooses to buy monthly or in March and April, which is the traditional off-season, and there is a lot of room for negotiation
The number of local shops, the strength of the car mechanic, the convenient distance, insurance, the cost of replacing the tram, and charging.
Insurance:
Lost car compensation: need to see the restrictions clearly, such as the purchase of the car needs to purchase the corresponding insurance services, if the vehicle is really stolen, the user also needs to provide the manufacturer with the car purchase voucher, invoice, receipt of the case and other information, the material is complex, not to mention, and finally according to the length of time you buy the car will be deducted high depreciation expenses. There are also many big brands in China that have done a relatively complete job in the insurance of electric vehicles.
Battery Charging & Replacement:
Service life: pay attention to the brand and production date, the normal battery life is in one and a half to three years, depending on personal maintenance (why at least one and a half years, because the battery warranty is one year, if you feel that the battery is not durable, you can go to the after-sales department for free to worse a set of turnover batteries. That is, the warranty battery. No matter how bad it is, it can be used for half a year. Good battery every 2-3 years;
The new national standard policy, the speed can not exceed 25 kilometers per hour, the weight of the vehicle including the battery can not exceed 55 kg, there must be a pedal riding function, and the motor power cannot exceed 400 watts. And there are corresponding requirements for the registration of electric vehicle licenses.
Beijing: From May 1, 2019, unlicensed electric vehicles will be prohibited from driving on the road. The new national standard electric bicycle needs to be registered before April 30, 2019. After the purchase of the new national standard electric vehicle should be from the date of purchase of the car within 15 days to the traffic management department to apply for registration. Temporary signs will be installed for electric vehicles exceeding the standard. The transition period is three years, and no more road driving is allowed after the expiration of the transition period from November 1, 2018 to October 31, 2021.