Electric wheelchair as a means of action for the elderly or the disabled, now the demand is growing, more and more types of options are available, domestic and domestic brands are also under dozens, styles are hundreds of thousands, how to choose?
Electric wheelchair has four parts: drive system - motor, control system - controller, power system - battery, skeleton system - frame and wheel.
At present, the drive of electric wheelchair includes gear motor, caterpillar motor and hub motor. Gear motors are the most powerful and stop on the ramp, but they are expensive and heavy. Track motor power is small, and the track will loosen after a long time. Hub motor has the lowest cost and light weight, but its power is weak, the ramp can not stop, it will slide backward and its safety is poor. In general, the advantage is low power consumption, the same battery hub motor will last much longer, the overall recommendation is to choose the electric wheelchair of gear motor.
At present, the control system has domestic controllers, imported British PG controllers and new dynamic controllers. Whether the controller is good or not depends on the steering sensitivity and start-stop sensitivity. Turning is to see if you can rotate 360 degrees in situ, and what you can do is the controller of Niu B. Look at the start-stop speed, some cars start the controller at the lowest speed, the car will start slowly, loosen the controller, the car will stop slowly within a limited distance. Some of them start very quickly. For the old people, they rush too hard and stop immediately. It's a bad experience.
Batteries are divided into lead-acid batteries and lithium batteries. At present, 24V voltage is used in electric wheelchairs. The larger the power is, the farther the theoretical endurance will be. Generally, most batteries are in 35AH, and the endurance is 20 kilometers. The bigger ones are 55AH and 75AH, which can last about 30-40 kilometers, and the smaller ones are 12-20AH, which is like 10 kilometers. Lithium batteries are lighter and easier to maintain than lead-acid batteries, but they are expensive. At present, the technology of lithium batteries in China is uneven, and there are potential safety hazards. Although lithium batteries are used in electric bicycles, the electric wheelchair industry is more cautious. Large manufacturers still choose lead-acid batteries. Also lead-acid batteries, the identification depends on the self-discharge time. I have seen a brand of batteries put in three months without charging, the battery is still full, and some half of the discharge in half a month.
Skeleton is material and design, fixed design or folding design, which varies from person to person. If the skeleton is inclined to carry, it should consider ultra-light material and easy folding. If stability is considered and folding is not required, the rigid wake-up structure with fixed skeleton is chosen, because this kind of structure is the strongest and durable. Wheels are mainly flexible and shock absorber. The pneumatic tire has good shock absorption and is easy to pass through small steps (usually less than 5 cm). Solid tires slip when they meet small steps. It's not too great to have shock absorbers through ditches and ridges. Generally four wheels, two front wheels are universal wheels, and two rear wheels are driving wheels. The smaller the front wheel, the more flexible it is, but when it comes to ditches or ground seams, it is easy to sink in. If the front wheel is thicker than 18 inches, it will be all right.
Choosing an electric wheelchair also requires rational thinking. The lighter it is, the better it is. In fact, there are not many opportunities to move it. Now it is accessible. On the contrary, the performance and failure rate of the wheelchair should be considered a little more. Under the premise that this wheelchair has excellent performance and super light weight, the cost is at least 1W+, and the price of three or four thousand wheelchairs is still far away. Old people buy electric wheelchairs, the core purpose is to go out for a walk, get rid of the shackles of his family, let him go out to the park, community strolls, they also need their own space and elderly life, which is the core of the appeal. All I want to do is buy a portable car to follow the old man and drive out with an electric wheelchair. In fact, the old man wants to go out by himself. So the stability and driving performance of the car is the most critical!
From the Internet