2015年6月30日星期二

How to adjust the electric bicycle transmissions and brake systems

In electric vehicles in the process, shifting and braking it is very important, which involves the transmission of electric vehicles and braking systems. Specifically, how to adjust, the following methods.
1, adjust transmission
If you want to speed up the case, first put the chain on the large front chainring, chain dial back to the pinion gear. Then the top of a small guide wheels on the smallest pinion, stuck at the slowest shift cable, electric trike bicycles and then adjust the cable tension adjustment screw transmission. The chain behind appropriated largest pinion teeth on the front plate, during operation, the other adjustment screw transferred to the most tight, so the above small guide wheels accurately in the large gear shift movement arrived in the extreme.
With a screwdriver to the rear derailleur to the maximum between the upper pinion small guide wheel and the pedal backwards swirled after transmission to swing freely let the air out of the space of a half chain ring. Pedal forward and then rotate the dial to the third small chain gear, transmission adjustment screw after adjusting until the chain does not rub with the fourth pinion, in this way, one by one transform, until no jamming.
2, adjust the brake system
Centering, front axle, flywheel, fork pivot point of the shock absorber and other components, every six months or a year, it added butter or oil. The brake wire fixed seats spiral unscrew tightening or relaxation of the steel wire, so that the two brake pads from the circle edge at 1.5 to 2 mm, tighten the screws.
If the bike chain is loose, loosen the nut, adjust the chain, after the rear wheel and the frame parallel, tighten the nut. When adjusting the handlebars and saddle height, can not let the security thread exposed on the saddle. And the core screw, the bar, the saddle clamping nut and saddle tube clamp bolt, which torque is not less than 18N · m. Always check the braking performance is good, the rain, snow and downhill riding should increase braking distance.

2015年6月25日星期四

Bike troubleshooting method

If you find that the mountain electric bicycle is broken should be repaired, and that the first thing is to first find out the fault can be repaired. That general professional repair personnel in a short time how quickly determine the fault lies in where?
1, the electric car did not turn up
In the case of electric, open the electric door lock. Measured with a multimeter whether the voltage motor leads can immediately determine the fault lines and control lines. Bike specific measurement method is measured with a multimeter DC gear controller or motor leads, turn to the governor whether the voltage measured can find fault.
Measurement results are voltage, it is determined that: bad motor or controller circuit failure of the motor to the lead, should be excluded. No voltage measurements, it is determined that: control line failure, should the next check.
The controller brake power plug is disconnected, and then turn the power switch. Car rotating, it is determined that: the brake switch is bad, has been causing a short circuit fault, the brake switch should be renewed. If the car does not turn, then again a good to the governor, to replace the original turn to. Such as the car rotates, it is determined that: the original to the governor is bad, causing the foldable bike electric does not turn, should get a new controller.
Measuring the battery compartment contacts, the power supply section can be determined immediately because the car does not turn cause failure. It is to measure the battery contacts with a multimeter DC gear box, to see whether the voltage display. If no voltage display, find open power locks, dashboard does not light up, it is determined that: Fuse Fuse off, should be replaced by fuses, wires off, welding wire breakage or should be renewed. If voltage display, turn the power locks, dashboard light is off, it is determined that: power locks broken, no power to get a new lock.
2, the electric car stop switch
The speed controller regulator turn the plug off, it can be determined to the governor or controller failure immediately. If the plug is disconnected to the governor to open the electric door lock car does not turn, determine: the governor is bad, re-installed, repaired. If the plug is disconnected to the governor, open the electric door lock, the car still turn, determine: the controller is bad and should be replaced.
I know these things and then, in the face of a similar failure, if the situation is more urgent, then you can do it yourself repaired.

2015年6月19日星期五

electric trike bikes which tips

electric trike bikes design standard load of 75kg, when the load exceeds 90kg, the battery and the motor will be damaged. Battery not long hold, hold charge at least once a month. After riding the battery discharge must be fully charged storage, otherwise it will greatly affect battery life, severe cases can cause the battery scrap.
When the power runs out, the system will automatically power off. But after the power is turned off, the electric bicycle battery appears bounce "virtual" voltage (reactive power and voltage), then it must be charged before using it, otherwise it will cause the battery discharge, which would damage the battery can not be repaired . Actual mileage continued line of cargo electric bicycles will be affected by many factors (such as frequent braking, starting, uneven pavement, the temperature is too low, on the steep slopes, wind speed, tires inflated, excessive load) effects.
When riding slow acceleration. From 0-20km / h, acceleration time is not less than 10S, in order to maintain a smooth ride. Minimize the number of starts. Electric vehicle economic speed (most power can travel speed) is generally 16-18km / h. Note that the braking distance riding is generally 4m, rain increases the braking distance doubled.

2015年6月13日星期六

How to improve the electric vehicle battery capacity

In the electric vehicle battery case permit, try to increase the battery size. Increasing the plate thickness of the gate, the main positive plate thickness. Use this method to increase the amount of active substance, so as to achieve the purpose of increasing capacity. Thinning the plate thickness, to improve the utilization of the active material, increasing the number of plate sheet, plate area increase, so as to achieve the purpose of increasing the capacity.
Thinning the plate is more conducive to increase capacity, but because of an increase in the plate, positive and negative cargo electric bicycles increased interval, it will inevitably lead to thinning of the membrane, thereby increasing the risk of dendrite membrane penetration, while increasing the cast plate, coated plate, workload assembly. Both methods improve the capacity, we must increase the density of acid in order to ensure there is enough acid involved in the reaction.
Both methods currently made battery open circuit voltage is between 13.7V-14V (which is far beyond what we customarily acceptable value), 5A discharge all of 140 minutes or more.

2015年6月7日星期日

Development of China's electric bicycle technology

China electric bike on the application of the torque sensor technology and integrated circuit controller technology has been a world leader, the integrated electronics and digital technology in the controller, the motor valve-regulated charge control other components, intelligent electric bicycles will be the future the commanding heights of development.
The high-tech composite materials and high-strength light alloy material will be more used in electric bicycles manufacturing. While the successful application of aluminum alloy material, the use of titanium, chromium molybdenum steel and other lightweight, high strength carbon fiber and other materials and polymer composites. Increase the intensity of electric adult tricycles, electric bicycles to reduce the weight. The bicycle's performance and manufacturing process revolutionary change.
Wider application of computer and microelectronics technology in electric bicycle product design, mold processing and production process, continue to improve production automation and improvement of production technology. Accelerate international new technology, new materials, the use of tires, batteries and accessories manufacturing nano materials, so 3 wheel electric bicycles are lighter, faster and travel farther.
China's nickel-metal hydride battery technology has gradually matured applications, lithium battery safety issues once solved, it can be spread. Technology leading electric bicycle manufacturing enterprises to increase research on new energy, reduce the cost of the new battery to the electric bike more "source of life."

2015年6月1日星期一

Electric bicycle motor controller principle

Car fast motor controller pace of development in recent years, is hard to imagine, operating on increasingly "fool", and the display is more complicated. Drive connection, it also has an electric mountain bicycles performance and help functions, if the conversion to boosting state, with the chain tension dynamometer, or axis torque sensor, tandem electric bicycle pedal motion as long as the pedal, you can perform or help determine the booster's size.
The controller is a peripheral device and the main chip (or single-chip) components. SCM also called microcontrollers, are integrated on a single chip to memory, language has transformed signal decoder, sawtooth generator and pulse width modulation function circuit and make the power MOSFET switching circuits on or off, by side wave conduction time of the power control tube drive circuit to control the motor speed, integrated input and output ports, and the computer chip composition.
Design quality control, features, functions used in microprocessor, power switching devices and peripheral devices circuit layout is directly related to vehicle performance and operational status, also affect the performance and efficiency of the controller itself. Different quality controllers, used in the same car with the same state with the same set of battery charge and discharge, and sometimes show large differences in driving ability.