All posts by Lynn

Self-heating, fast-charging battery makes electric vehicles climate-immune

Self-heating, fast-charging battery makes electric vehicles climate-immune

Date:

June 28, 2018

Source:

Penn State

Summary:

Californians buy EVs because they live in a warm climate. Conventional lithium-ion batteries cannot be rapidly charged at temperatures below 50 degrees Fahrenheit, but now a team of engineers has created a battery that can self-heat, allowing rapid charging regardless of the outside chill.

self-heating,fast charging electric battery
self-heating,fast charging electric battery
A fast charging battery for all outside temperatures that rapidly heats up internally prior to charging battery materials.
Credit: Chao-Yang Wang / Penn State Self-heating, fast-charging

 

I work in Qiangsheng Electric Tricycle Factory, the news that self-heat batteries can be created is really an excellent news to everyone that support environmental protection,we always pay attention to the environmental friendliness and are always engaged in promoting our E-Rickshaw efficiency.

When owners can recharge car batteries in 15 minutes at a charging station, electric vehicle refueling becomes nearly equivalent to gasoline refueling in the time it takes,which can greatly improve the development of Electric vehicles such as Electric cars, electric tricycles and electric motorcycles. Assuming that charging stations are liberally placed, drivers can lose their “range anxiety” and drive long distances without worries.

Previously, the researchers developed a battery that could self-heat to avoid below-freezing power drain. Now, the same principle is being applied to batteries to allow 15-minute rapid charging at all temperatures, even as low as minus 45 degrees F.

The self-heating battery uses a thin nickel foil with one end attached to the negative terminal and the other extending outside the cell to create a third terminal. A temperature sensor attached to a switch causes electrons to flow through the nickel foil to complete the circuit when the temperature is below room temperature. This rapidly heats up the nickel foil through resistance heating and warms the inside of the battery. Once the battery’s internal temperature is above room temperature, the switch turns opens and the electric current flows into the battery to rapidly charge it. “One unique feature of this cell is that it will do the heating and then switch to charging automatically,” said Chao-Yang Wang, William E.

Diefenderfer Chair of mechanical engineering, professor of chemical engineering and professor of materials science and engineering, and director of the Electrochemical Engine Center. “Also, the stations already out there do not have to be changed. Control off heating and charging is within the battery, not the chargers.”

The researchers report the results of their prototype testing in this week’s edition of the Proceedings of the National Academy of Sciences. They found that their self-heating battery could withstand 4,500 cycles of 15-minute charging at 32 degrees F with only a 20-percent capacity loss. This provides approximately 280,000 miles of driving and a lifetime of 12.5 years, longer than most warranties.

A conventional battery tested under the same conditions lost 20-percent capacity in 50 charging cycles.

Lithium-ion batteries degrade when rapidly charged under 50 degrees F because, rather than the lithium ions smoothly integrating with the carbon anodes, the lithium deposits in spikes on the anode surface. This lithium plating reduces cell capacity, but also can cause electrical spikes and unsafe battery conditions. Currently, long, slow charging is the only way to avoid lithium plating under 50 degrees F.

Batteries heated above the lithium plating threshold, whether by ambient temperature or by internal heating, will not exhibit lithium plating and will not lose capacity.

“This ubiquitous fast-charging method will also allow manufacturers to use smaller batteries that are lighter and also safer in a vehicle,” said Wang.

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Garbage Transportation Electric Tricycle For Environmental Sanitation Workers

Garbage Transportation Electric Tricycle For Environmental Sanitation Workers

garbage electric vehicle for dustman
garbage electric vehicle for dustman
garbage electric tricycle
garbage electric tricycle

600IMG_20170216_103256

Motor type:DC series excitation brushless
Power (watt) :48V/800w
Controller24 tube
Shock absorption dia 43mm shock absorption
Leaf spring8 layers
Charge Voltage:220V 50HZ
Charging time6-10hours
Transmission mode:GEAR
Top Speed (km/h) :≤40km/h
Continued trip mileage:≤60km
climbing ability≤20degree
Front wheel size:3.50-12
Rear Wheel Size:4.00-12
Brake type:double rear drum brake
Ground Clearence :250mm
Dimension:2750*930*1280mm
N.W :185kg
Max load capacity:400kg
Battery type:12v 120ah lead acid batteries
Battery Quantity:4
Container QTY14pcs/20’GP,40pcs/40’HQ

Please contact us if you wanna import . I’m Lynn^_^  Wechat: +8618201208641

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New Model Electric Auto Rickshaw Borac for Bangladesh

Updated Borac Model Auto Rickshaw Electric Tricycle for Bangladesh.

borac battery operated rickshaw for Bangladesh

borac battery operated rickshaw for Bangladesh

 

Specification:

  • Motor type:Brushless Direct Current Motor
  • Power (watt) :60V/1000W Datai
  • Controller:30 tube Datai
  • Charge Voltage:220V,50HZ
  • Charging time6-10hours
  • Transmission mode:Shaft(CVT)
  • Top Speed (km/h) :≤40km/h
  • Continued trip mileage:≤80km
  • Climbing ability≤20degree
  • Front Wheel Size         3.25-16
  • Rear Wheel Size:3.25-16
  • Brake type:double rear drum brake
  • Ground Clearence :250mm
  • Dimension:2950*1080*1900mm
  • N.W :325KG
  • Max load capacity:≤500kg
  • No of passenger (including driver):6 persons
  • Battery type:12v 120ah lead-acid
  • batteriesBattery Quantity:5pcs
  • Container QTY33pcs/40’HQ
borac front face auto rickshaw

borac front face auto rickshaw

 

borac front face auto rickshaw factory

borac front face auto rickshaw factory

 

electric auto rickshaw borac steel body

electric auto rickshaw borac steel body

 

borac pole auto rickshaw factory Bangladesh

borac pole auto rickshaw factory Bangladesh

 

electric auto rickshaw shaft

electric auto rickshaw shaft

 

borac rim auto electric rickshaw

borac rim factory

 

borac spring shock absorber damper

borac spring shock absorber damper

 

Qiangsheng e rickshaw factory

Qiangsheng borac auto rickshaw factory

 

Qiangsheng Auto Rickshaw

Qiangsheng Electric Tricycle Auto Rickshaw Factory

 

Let us know if you have any need of electric auto rickshaw or electric tricycle spare parts.

Lynn

Wechat: +8618201208641

 

 

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