charger
The charger is a device that supplements the battery with electric energy. It is generally divided into two-phase charging mode and three-phase mode. The two-phase charging mode: First, constant voltage charging, the charging current gradually decreases as the battery voltage rises, etc. After the degree, the battery voltage will rise to the charger's set value, and it will be converted into trickle charge. Three-phase charge mode: When the charge starts, the constant current charge will be used to quickly recharge the battery; after the battery voltage rises, it will turn to Constant voltage charging, at this time the battery energy is slowly added, the battery voltage continues to rise; when the charger's charge termination voltage value is reached, it is switched to trickle charge to maintain the self-discharge current of the battery and the supplied battery.
battery
The battery is the vehicle-carrying energy that provides electric vehicle energy. The lithium-ion battery electric vehicle uses the latest lithium ion battery.
Tips for use: The main control board of the controller is the main circuit of the electric car, which has a large working current and will generate a large amount of heat. Therefore, do not park the electric car in the sun or expose it to rain for a long time to avoid controller failure.
1. The battery below the market average wholesale price will not buy.
2. Products that have not passed the market test of more than two years.
3. There is no battery for electric vehicle manufacturers to resolutely not buy.
4. High-priced battery, if it is not produced by a big factory, it will not buy it.
5. Change the battery of national standard size and do not buy it.
Discharge 6.5A, 30 seconds when the voltage is higher than 12.68V will not buy, more than 90% is a short-lived battery.
The simplest way to test the battery is to discharge the battery at 5A, and the voltage is lower than 12.63 at 30 seconds. The voltage of the first 3 minutes does not drop and rise, the more it rises, the better the quality.
Controller
The controller is the component that controls the speed of the motor and is the core of the electrical system of the electric vehicle. It has undervoltage, current limiting or overcurrent protection functions. The intelligent controller also has multiple riding modes and the self-test function of the vehicle's electrical components. The device is the core component of energy management and various control signal processing for electric vehicles.
Turn handle, brake handle
Turning handles, brake handles, etc. are the signal input components of the controller. The turn signal is the drive signal for the rotation of the electric vehicle motor. The brake handle signal is an electrical signal that the internal electronic circuit of the brake outputs to the controller when the electric vehicle brakes; After the controller receives this signal, it will cut off the power supply to the motor, so as to achieve the brake power off function.
Assist sensor
When the electric vehicle is in the assisting state, the assisting force sensor is a device that detects the pedaling force and returns the speed signal of the pedal. According to the electric driving power, the controller can automatically match the human power and the electric power to jointly drive the rotation of the electric vehicle.
Motor
The most important part of an electric bicycle is a motor. The electric motor of an electric bicycle basically determines the performance and grade of the vehicle. Most of the motors used in electric bicycles today are high-efficiency rare-earth permanent magnet motors, which are mainly divided into high-speed brushes and gears. Geared motors, low-speed brushed motors and low-speed brushless motors. At present, high-speed brushed + geared motors have the best performance and are expensive; low-speed brushed motors are cheaper, but their performance is worse; brushless motors are The quality of the controller is very high. There are not many brands listed. The best consumers choose the brand when they buy.
(Enda Lithium-ion electric bicycles in the United States) As we know, electric bicycles (hereinafter referred to as electric vehicles) use electric energy such as batteries and lithium batteries as an auxiliary energy source, and have two wheels to enable human-powered riding, electric or electric assistance. Functional special bike.
Motor is the part that converts battery power into mechanical energy to drive the rotation of electric wheels. The motor used in electric vehicles has many kinds of mechanical structure, speed range and power supply form. Common are: Brushed hub motor, Brushed Gearless hub motor, brushless gearless hub motor, brushless hub motor, high-disk motor, side-mounted motor, etc.
Tips for use: When charging, keep the charger well-ventilated. If the odor is smelling during the charging process or the temperature of the charger case is too high, stop charging, checking, and processing immediately.
Lighting, instrument
Lamps and meters are parts that provide lighting and display the status of the electric vehicle. Meters generally provide battery voltage display, vehicle speed display, riding status display, lamp status display, etc. Smart meters can also display the vehicle's electrical components Fault conditions.
Common structure
Most electric bicycles use a hub-type motor to directly drive the front or rear wheels. These hub-type motors are used with wheels of different wheel diameters depending on the output speed to drive the vehicle. The speed can reach 20km/h. Although the styling of these electric vehicles is not the same as the installation position of the battery, its driving and control principle is common. Such electric bicycles are the mainstream in today's electric vehicle products.
Specially constructed electric bicycle
A small number of electric vehicles are driven by non-wheel-type motors. These electric vehicles use side-mounted or columnar motors, mid-mounted motors, and friction tire motors. Generally, electric vehicles driven by such motors will have reduced overall vehicle weight and motor efficiency. It is less efficient than the hub type. With the same battery power, the whole vehicle using these motors is generally reduced by 5%-10% compared to the hub-type vehicle continuous mileage.
