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Technical Info
Spectron Technology
SuperMole Solar, the global leader in micro solar arrays, and the major distributor for the patent holder for a broad array of solar assisted consumer electronic devices is proud to introduce Spectron its newest line of solar cellular batteries, which charge three times as fast as the original PowerBooster models.
This new technology uses solar cells with much higher efficiency than conventional models. These cells have been used by years in space satellites but not until now have they been economical to use in consumer goods.
Also, Spectrons look different than ordinary solar cells, changing color from purple to gold in different kinds of light.
The charging power of these cells means that one might travel anywhere on earth and not need to bring a charger along. Spectron batteries can also charge in conventional home and car charging stations.
Spectron is the ultimate Solar Battery. And at a surprisingly affordable price.
See Spectron Chart
GrayWolf Technology
SuperMole Solar, the Global leader in micro solar arrays, and the major distributor for the patent holder for a broad array of solar assisted consumer electronic devices, is proud to introduce GrayWolf patent pending boosting technology. With GrayWolf installed in a cellular battery or phone, a significant extra amount of power to the battery can be supplied at a low cost.
With the advent of 3g phones and the broadband services that they offer, the GrayWolf solution becomes even more valuable adding up to 100 mA depending on the size of the phone and the configuration.
From a marketing point of view, a solar battery with GrayWolf brings a story that the Customer wants to hear, that the phone can receive power from sun that the phone can charge anywhere on earth, that phone has added safety, and the various functions on the phone: talk time, video time, and digital photography, are extended, for a small or no increment in price.
The GrayWolf technology has elicited great interest at a number of OEM's in the mobile communication field and the Company is positive that GrayWolf enhanced phones and chips will become standard in the next generation of cellular phones and batteries.
GrayWolf Enhanced Solar Charging Vs. Standard Solar Charging
See GrayWolf Chart
Empirical Solar Charging Test
Solar charging of batteries is a process complicated by many uncontrollable external factors. Unlike charging with traditional AC or DC power adapters, the charging current varies, depending on the environmental, geographic and atmospheric conditions present during the time of charging. For these reasons, performance varies, even when testing is performed in the exact same location but on different days. For more information regarding this phenomena, please refer to the SPS document entitled "Solar Charging Tutorial".
In order to effectively demonstrate the capability of solar battery charging, it is necessary to use laboratory-controlled equipment. While this process provides very accurate data, for the reasons indicated above, it is not a "practical" indication of the user's benefits associated with solar charging.
The following is a procedure that, when followed as specified, provides an accurate accounting of the effect of solar charging in a particular location. It may be applied to any battery model and two sets of sample data has been provided for reference.
- The battery pack is first cycled using an Alexander Optimizer 2003 or similar type battery analyzer. The result of the analysis is the exact capacity of the battery in mAh (milliamp-Hours) and the knowledge that the battery has no remaining capacity, therefore, following solar charging; any capacity exhibited will have been derived from solar charging.
- Testing should begin at 1100 Hours and end at 1500 Hours (4 hours total).
- The battery is positioned with a "zero angel of incidence" or directly in line with the sun. Optimum exposure can be determined using a solar array configured to a multimeter, indicating the "short-circuit" output current. Align for maximum current.
- The battery is re-positioned every hour to "track" the sun at a zero angel of incidence for a total exposure time of four (4) hours.
- Following the exposure period, the battery is rested for a period of one (1) hour. This interval permits the battery to adjust to room temperatures. In practice, this is not necessary but under controlled circumstances, the temperature at which the tests are conducted should remain constant.
- The battery is then discharged using the Alexander Optimizer 2003 at a constant rate of 500mA. The resulting value represents the capacity, or mAh, returned to the battery entirely by solar charging. This can be reduced to the average mAh per hour by dividing by four (4). You can determine the percentage of battery capacity returned per hour by dividing the returned capacity by the total battery capacity (Step 1) and then dividing by four (4).
- Test location and date:
- Date: August 13, 2001
- Location: Canoga Park, CA
- Latitude: 34° 11' 37"
- Longitude: 118° 35' 42"
- Elevation: 669 ft (203 m)
- Weather: Clear
- Air Temperature: 97°F
- Test Sample:
- Cell Phone Brand / Model: Nokia 6100
- SPS Spectron Model: PS9700
- SPS PowerBooster Model: PL9700
- Battery Type: Lithium Ion
Battery Capacity: 900mAh (Nominal)
Solar Charging Tutorial
1. Supplied with these instructions is a Silicon Micro-Solar Array. This array represents Sunpower's "typical" technology and is used to demonstrate the general concept of micro-solar battery charging. The engineer should always keep in mind that SuperMole has various sizes and types of arrays. Each size exhibits different a voltage and/or current output, depending on dimensions, material and intended purpose.
2. Under outdoor testing conditions at Canoga Park, California during the month of February and at peak day, this array produced a charging current of 45mA after adjusting to temperature.
3. The blocking diode in series with the output (Schottky type 1N5817 or equivalent) is required to prevent the Micro-Solar Array from draining the battery when it is not exposed to sufficient light to produce electricity. This is due to the condition where the solar array resistance is lower than that of the battery, producing, in effect a load on the battery. The diode prevents the flow of current from the battery into the solar array and draining the battery.
4. In some SuperMole charging systems, the blocking diode is not used; rather other techniques that are more efficient and cost-effective are employed.
5. The most realistic testing results from true outdoor conditions. In conducting such evaluations, it is extremely critical to factor in conditions such as the time of year, air temperature, solar filters, solar exposure, angle of declination and latitudinal position. (See Explanation of Terms)
6. Because of the variables noted above year-round evaluations and testing may not be practical. For this reason Sunpower has developed a simple demonstration that approximates outdoor exposure to the sun.
A) Assemble a light table following the guidelines in "LIGHT STATION SET-UP." These are only guidelines and other techniques may be employed provided that a usable fixture is created.
B) Adjust the distance of the lamp to the work surface by placing the discharged test unit under the lamp at adjusting the focus to achieve a charge current as noted below. Refer to the connection diagram below for details on battery / solar array assembly.
45mA Winter Setting = Approximately 12" to 13" (30cm to 33cm) 60mA Summer Setting = Approximately 11" to 12" (28cm to 30cm)
C) Solar charging may now be demonstrated for various samples using a consistent light source. Use a momentary contact switch to "pulse" the lamp on/off to avoid overheating the solar array.
D) By using multiple lamps, the distance from the solar array to the lamp may be increased proportionally and the solar array temperature will be reduced. By doing so, testing for extended periods may be conducted provided that the solar array surface temperature is continuously monitored. Cool the solar array by directing airflow from fans over the top of the surface. Do not permit the solar array to heat beyond 50°C (122°F).
Time of Year: The time of year is relative to the orientation of the earth to the sun in relation to the earth's axis (not distance from the sun). During summer months, this angle of exposure is at it's greatest and, therefore, more intense. This condition is antithetical for the two hemispheres and optimum charging will at opposite times of the year.
Air Temperature: Solar cells are affected by extremes is temperature and perform within the temperature range of 0°C to 90°C (32°F to 90°F). However, for optimal performance the maximum surface temperature of the Solar Array should be below 50°C (122°F). The rise in array surface temperature will be a factor of solar heat radiation and ambient temperature. Care should always be used to keep the Array temperature as low as possible by cautioning users to maintain adequate air circulation. When Array's are first exposed to the sun they inherently exhibit a higher than normal output. The Array must adjust or "warm-up" before it begins to deliver consistent output.
Solar Filters: Solar Filters are any objects that block the transmission of light to the Solar Array. These may be intermittent conditions such as a passing cloud or the shadow of a building or continuous impediments such as fog or air pollution or tinted glass. Since solar electricity is generated by the visible light spectrum, anything that reduces the intensity of the light reduces the charge rate.
Solar Exposure: The time of day at which charging takes place provides a varying degree of performance. At peak day, or when the sun is at the highest point in the sky, the maximum charge level will be obtained. Therefore, exposing for one hour at 0900 will provide less charge than one hour at 1200 on the same day. The total time of Solar Exposure will have a cumulative affect.
Angle of Declination: For optimum performance the Solar Array must be ori ented facing directly toward the sun. This is referred to as the Angle of Declination or Angle of Incidence. As the earth rotates, the position of the sun relative to the Solar Array changes throughout the day. If the Angle of Declination is not corrected, the effectiveness of charging decreases. Adjustments are not necessary to be made for slight changes, however, over a period of hours, the loss of efficiency can be significant.
L atitudinal Position: The strength of the sun is at its greatest along the equator. As one travels further north and south of the equator, the intensity of the sun diminishes and the effectiveness of solar charging decreases.
The image shows how the effectiveness changes by Latitudinal Position, north and south. This condition is the opposite in each of the hemispheres as maximum solar radiation impacts the earth during the summer months and when it is summer in the north, it is winter in the south.
Light Station Set-Up
1. Fabricate Wall Bracket using 2"X4" (1-3/4" X 3-1/2") construction lumber or equivalent material.
2. Secure one 15" piece of lumber and one 9" piece into an "L" shape assembly.
3. Drill sufficient holes in short side to mount securely to a Mounting Surface such as a wall. Note: Mounting surface should not connect to the Work Surface and must otherwise remain immovable.
4. Drill one 3/8" hole 1-3/4" centered from the end of the open end of the Wall Bracket to accept the Lamp Housing Support Rod. (See detail)
5. Drill one 1/4" hole with a 3/8" X 3/8" counterbore centered horizontally along the Wall Bracket meeting the hole for the Lamp Housing Support Rod. (See detail)
6. Thread the Adjustment Screw assembly (See detail) into the 1/4" hole. Remove and apply a small amount of lubricant such as hand soap and reinstall. (See detail)
7. Insert Lamp Housing Support Rod and hold in position with Adjustment Screw. Note: Do not over tighten.
8. Attach Lamp Housing Support Rod to the Lamp Housing mounting bracket.
9. Mount Wall Bracket approximately 36" from the top of Work Surface
10. Adjust height as indicated in test procedures.
Light Station Material List
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1ea 1-3/4" X 3-1/2" X 13-1/2" Wood board
1ea 1-3/4" X 3-1/2" X 9" Wood board
1ea 3/8" X 30" Wood dowel rod to fit Lamp Housing
1ea 5/16" X 3" bolt (Cut to size)
1ea 5/16" Wing Nut
1ea 5/16" Nut
1ea 5/16" Split Lock Washer
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1ea Halogen spot lamp, 90W @ 120VAC
1ea Lamp Housing assembly Note: Photographic light stand is ideal
1ea SP (MC) Toggle switch; 3A @ 120VAC
Misc. Fans or blowers.
Misc. Assembly hardware
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Light Station Assembly Details
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Light Station Components
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Fabricating Adjustment Screws
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Adjusting Lamp Height
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Focusing Light Beam
1. Create a Target Paper by marking the size of the solar panel to be evaluated in the center of a gray or light blue paper 8-1/2" X 11", or similar, in size.
2. Switch on Lamp and note the center point of the light beam on the Target Paper.
3. Position the center of the Target Paper at the visually maximum center point of the light beam.
4. Place the solar array (with discharged battery connected) attached to milliamp meter, within the target area.
5. Flash the Lamp and focus the light beam on the solar array within the calibration range (mA) specified by slightly adjusting the angle of the Lamp Housing.
45mA = Winter setting 60mA = Summer setting
NOTE: Flash the Lamp to avoid heating solar array.
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Target Paper shown with light beam image in target area.
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