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Battery

Lithium Iron Phosphate(LiFePO4) battery is a new kind of Li-ion battery with excellent safety, environment friendly, high energy density, long cycle life and nice temperature performance. Soft packing lithium cobalt(LiCO2) battery is also a kind of high-safety lithium-ion battery with high energy density and nice characteristics. Historically, lead-acid, nickel-cadmium(Ni-Cd), and nickel-metal hydride(Ni-MH) batteries have been the conventional choice for small-sized rechargeable batteries. In line with the recent trends toward mobile and cordless electronic equipment, rechargeable batteries are required to provide higher energy density to meet the needs of ever smaller and lighter devices. Moreover, the attention being focused on protecting the environment has resulted in demand for products that are environmentally friendly.

Features
1. High Energy Density
The weight of a lithium ion battery is approximately one half compared to a nickel-cadmium or nickel-metal hydride battery of similar capacity. Moreover, the volume of the lithium ion battery is 40 to 50% smaller than that of a nickel-cadmium and 20 to 30% smaller than that of a nickel-metal hydride battery.
High Performance
Provides a high LiFePO4 Anode capacity of 145mah/g which belong to the highest among all our competitor in the world.
Extremely Safe/Stable Chemistry
High intrinsic safety, non-explosive & will not catch fire under collision, even over-charging, or from a short circuit.
High thermal stability of phases up to 500C.
High Discharge Rate Capacity
Among the best for all high power output demands, thus when climbing mountain and accelerate, out battery have better powerful performance than the other lithium battery. 3C continuous discharge rate for our single cell.
Long Service Life
Over 6-7 years, up to 2000 cycles(under 80% DOD)
Rapid Charging Ability
The battery can be quckly and safely be 85% charged within half hour under 2C fast charge and can stand high discharge rate(5C-10C), which is 5 times faster than other lithium battery used at present.
Have Deep DOD(Depth of Discharge)
Can be fully discharged, lead-acid battery can only be 70% discharged, over discharge may destroy the lead acid battery. So with the same capacity, out battery would be more powerful.
High Volt and stable
Our voltage is better than Lead-acid, Ni-Mh and Ni-Cd battery, Lead-acid 2V/cell; Ni-Mh/Ni-Cd: 1.2V/cell, operating voltage of li-ion-Fe 3.2V/cell, moreover, the voltage would remain from 3.2V-2.80V within 85% of its discharge time.
No Memory Effect
Nickel Batteries exhibit memory problems
Environmentally Friendly
Non-toxic, Non-contaminating, no rare metals, CE, and SGS/ROHS approved, easy to dispose, No Heavy metals
Wide working temperature range
From -25℃~70℃(extremely cold and extremely hot weather will not affect its performance)
Flexible Form Factor
Small in size and light in weight. 1/3 weight of Lead Acid and 65% weight of NiMH. 2/3 size of Lead Acid but twice run-time of Lead Acid battery.
Standard & Custom Design
Life cycle up to 2000 cycles which is 7 times of Lead Acid and 2 time of NiMH and Li-ion cobalt, Li-MN battery.
COMPARISON DATA AMONG VARIOUS LITHIUM BASE BATTERIES

Features C-LiFePO4 LiCoO2 LiMn2O4 NiMH
Safety and
Environmental Concerns
Safest: no explosion, no smoke, no fire under
abused working condition and the most environmentally friendly. Non-toxic, no rare metal, fire
resistant, easily disposed
Not stable very dangerous Acceptable but also be
explosive and one fire under abused working condition
Not stable, will be be fire
even just uder high temp.
Cycle Life Best among all the listed groups-up to 2000
times(80% DOD condition)
Acceptable
(less than 500 times)
Unacceptable(around 300
times)
Below 500 times
Power Weight Density Acceptable 65% weight of NiMH Best Acceptable Low
Long Term Cost Most Economical High Acceptable High
Thermal Performan Excellent (45℃~70℃) Decays beyond 55℃~-22℃ Decays extremely fast over 50℃ Decays faster in high temp.
Remarks Lead Acid: though lower in cost and safety acceptable, it is extremely toxic, the worst for the environment, short cycle life, heavy in
weight, not the best choice for many reasons. Nickel Hydride: exhibits low power weight density, decays faster in high temp., memory effect, not suitable for high output usage.
Iron Phosphate Battery: have been proven as the most environmental friendly battery. It is the safest with longest life cycle and most suitable for high output usage. It is also the best for storage and back-up applicaions.
2. High Voltage
A single lithium ion cell has a voltage of 3.6V (Cobalt 3.6V, phosphate 3.2V), which is equal to either three nickel-cadmium or nickel-metal hydride cells connected in series.
3. Pollution-free
The lithium ion battery does not contain any polluting substances such as cadmium, lead, mercury, etc.
4. Non-metal Lithium
The lithium ion battery does not employ any lithium metal. It is not governed by aircraft transportation rules relating to carrying lithium batteries in passenger airplanes.
5. Long Cycle Life
Under normal conditions, the LiFePO4 battery has a life of more than 2000 cycles and LiCO2 battery has a life of more than 800 cycles.
6. No Memory Effect
The lithium ion battery is free from the so-called memory effect, a phenomenon seen in nickel-cadmium in which the apparent battery capacity decreases when shallow charge and discharge cycles are repeated.
7. Fast Charge Capacity
The lithium ion battery can be fully charged in 1 to 2 hours, using a constant-current / constant-voltage (CC/CV) type dedicated charger with a rated voltage of 4.00V per cell.

   


Solar Panel
A photovoltaic module or photovoltaic panel is a packaged interconnected assembly of photovoltaic cells, also known as solar cells. The photovoltaic module, known more commonly as the solar panel, is then used as a component in a larger photovoltaic system to offer electricity for commercial and residential applications.

Because a single photovoltaic module can only produce a certain amount of wattage, installations intended to produce larger electrical power capacity require an installation of several modules or panels and this is known as a photovoltaic array. A photovoltaic installation typically includes an array of photovoltaic modules or panels, an inverter, batteries and interconnection wiring.

Photovoltaic systems are used for either on- or off-grid applications, and for solar panels on spacecraft. As the financial and environmental cost of relying on traditional fossil fuels rises, harnessing the energy of sun continually proves itself to be a renewable, clean, and affordable solution for a green future. Solar power is inexhaustible and available virtually anywhere, making it an ideal resource for energy generation.

PV panel design allows for flexible installation options. A site with unobstructed blue-sky exposure, such as the roof of a commercial building, is a perfect candidate for PV panel installation. For panel installation in the northern hemisphere, maximize southern exposure, especially for the winter season. You can mount a solar system to a home roof or use stand-alone pole-mounts, specifically designed to withstand hurricane force wind.

In green energy industry, T&W provides Solar Module widely used in energy storage system, solar power system, Hybrid energy system and other green energy solution. In the future, T&W will continue to lead the new energy revolution, to help people get rid of environment issues.

Key Features

  • High efficiency
  • Excellent optical performance
  • Steady output voltage in direct current
  • Easy to be installed
Recommended Applications
  • Roof top systems
  • On-grid commercial systems
  • On-grid utility systems
  • Off-grid commercial systems
  • Off-grid utility systems

       


Chargers/Inverters/Converters
We supply a series of LiFePO4 charger, solar controller, inverters, converters and other EV accessories to meet our client’s requirement.

  


Technical documents download