The performance of the leisure electric tricycle is relatively stable, moderate in speed, and it is driven by electric power without refueling, which is environmentally friendly. At present, there are many energy sources used in electric tricycles, such as lead-acid batteries (including lead-acid colloidal batteries), nickel-hydrogen batteries, nickel-cadmium batteries, nickel-iron batteries, lithium-ion batteries, and fuel cells.
In order to ensure the normal use of this type of electric tricycle, a variety of protection functions are particularly adopted. The so-called protection function mainly refers to the commutation power tube in the controller, the power supply is not over-discharged, and the vehicle is in operation, and any failure that may be caused due to a fault or misoperation may occur. Signal protection measures. The basic protective functions and extended functions of the car are as follows:
The first is the brake power-off function. We know that in the event of an emergency or a power outage during driving, the brake system must be used to stop the vehicle. It is common to install a contact switch in the handlebars of the tricycle on the two clamp-type handlebars. This feature not only protects the vehicle itself, but also avoids wasting power.
The second is the undervoltage protection function, which mainly refers to the voltage of the power supply. In the process of driving the electric tricycle, when the final stage of discharge, under the load state, the power supply voltage has approached the "discharge termination voltage", the controller panel shows that the power is insufficient, causing the cyclist's attention and planning his own itinerary. When the power supply voltage has reached the end of life, the voltage sampling resistor feeds the shunt information to the comparator, and the protection circuit issues an instruction according to a preset program to cut off the current to protect the electronic device and the power supply.
In addition, in order to ensure safe travel, electric tricycles often have overcurrent protection, overload protection, underspeed protection and speed limit protection. The speed limit protection function mainly refers to that the speed can be avoided during the driving of the electric tricycle so as to achieve the goal of safe driving.