Panasonic BP-5917C40 Technical Handbook Download Page 40 | Manualshive

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Panasonic

Solar Cells Handbook, Page 39

August 1998

12. SOLAR CELL DESIGN

Solar cells are devices that convert light into electricity,
but they do not store electric power. In addition, since
the actual amount of power produced varies depending
on factors such as the installation conditions and
location, as well as the weather, there are a few
requirements which must be borne in mind when
designing a system. Power supply systems employing
solar cells generally fall into one of the following three
categories.

(1)

Direct connection to load

(2)

Paired with storage battery

(3)

Paired with commercial power supply

Presented below are a few simple guidelines and
equations to aid in the selection of solar cells and
storage batteries, based on the basic system
configuration and the load presented by the equipment
to be driven. Panasonic has been conducting research on
solar cell power supply systems for many years and has
collected a voluminous amount of data on the subject.
Please consult your Panasonic representative for specific
design details.

12.1

Solar Cell Power Supply System Basic Configuration

(1)

Direct Connection to Load

This type of configuration is suitable for applications
such as warehouse ventilation systems, car ventilators or

irrigation pumps in which equipment is driven only
when there is illumination.

(2)

Paired with Storage Battery (Direct load)

In this configuration the solar cell is paired with a
storage battery. It is suitable as an independent power
supply for applications such as lighting systems,

highway displays and communications equipment. Refer
to the Design Guide which follows for details on system
design.

(3)

Paired with Commercial Power Supply (Night
load)

This sort of configuration is suitable in cases where a
commercial power supply is needed to act as a backup

when the solar cell alone is insufficient. As the actual
system design is quite complex, please consult
Panasonic.

Solar cell

Load

Solar cell

Load

Charge/discharge
control circuit

Storage
battery

Diode to prevent reverse flow

Solar cell

Load

Charge/discharge
control circuit

Storage
battery

Diode to prevent reverse flow

Inverter

Commercial
power supply

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Summary of Contents for BP-5917C40

Page 1: ...anufactured by Matsushita Battery Industrial Co Ltd This information is generally descriptive only and is not intended to make or imply any representation guarantee or warranty with respect to any cells and batteries Cell and battery designs are subject to modification without notice All descriptions and warranties are solely as contained in formal offers to sell or quotations made by Matsushita B...

Page 2: ...ures Applications Specifications Dimensions Voltage Current Characteristics Precautions for use Thin Film Solar Cell Sunceram II Outdoor Solar Power Supply Units 18 General Information Features Applications Standard Specification Guidelines for the Usable Consumption Current External Dimensions Sunceram II Power Units for Outdoor Use 20 General Information Features Applications Specifications Dail...

Page 3: ...gn units which are used in combination with the company s own coin type rechargeable batteries With its sights firmly fixed on power sources for the new forms of soft energy which will be abundant in the twenty first century Panasonic is committed to developing new products which will fill the needs of the market 1 2 Principle of Power Generation The principle of power generation behind the Suncer...

Page 4: ...cells have wider spectral characteristics in various wavelength regions than crystalline silicon and are more sensitive over a wider wavelength region than amorphous silicon Emission spectrum of light sources Spectral sensitivity characteristics of solar cells 2 Excellent sunlight irradiation characteristics Compared with amorphous silicon Sunceram II operates more stabile over longer periods of t...

Page 5: ...Vp respectively The largest operating point in the square area is the maximum output of the solar cell 1 6 Dependence of cells on series connection When single solar cells are connected in series the voltage increases in proportion to the number of solar cells which have been connected as with ordinary batteries Single cell voltage x number of cells 1 7 Light sensing area and dependence on light i...

Page 6: ... also reduced However as far as the operating current is concerned since the operating voltage is generally set slightly toward the short circuit current side from the maximum output operating point the operating current peaks at around room temperature and gently falls both below and above the temperature For indoor applications 30 20 10 0 10 20 30 Rate of change 10 0 10 20 30 40 50 60 Temperatur...

Page 7: ...ness to the products in which they are used 2 2 Features These cells have a high spectral sensitivity to light ranging over a broad wavelength spectrum When they are used in a product under an incandescent light they deliver 5 times more power than amorphous silicon solar cells in internal testing It is possible to set an operating voltage that suits the application at hand because the solar cells...

Page 8: ...80 8 5 12 0 8 5 13 0 1 70 1 80 8 5 14 5 BP 3812C4C 38 0X12 5 8 0 11 0 1 70 1 80 8 0 12 0 8 0 13 0 1 70 1 80 8 0 14 5 BP 2911C4C 29 6X11 6 6 0 7 5 1 70 1 80 6 0 8 0 6 0 8 5 1 70 1 80 6 0 9 5 BP 2510C4C 25 0Xl0 0 4 0 5 4 1 70 1 80 5 2 5 8 4 0 5 8 1 70 1 80 5 2 6 5 Operating voltage Vp 1 55V BP 5513C5C 55 0X13 5 10 5 14 0 2 10 2 25 10 5 15 5 10 5 16 5 2 10 2 25 10 5 18 0 BP 551105C 55 0X11 0 8 5 11 5...

Page 9: ...urrent µA Current µA 40 30 20 10 0 0 0 5 1 0 1 5 2 0 2 5 40 x 10 x Incandescent lamp Voltage V 10 7 5 5 2 5 0 0 0 5 1 0 1 5 2 0 2 5 Voltage V 200 x 50 x Flourescent lamp Current µA Current µA 0 0 5 1 0 1 5 2 0 2 5 40 x 10 x Incandescent lamp Voltage V 10 7 5 5 2 5 0 20 16 12 8 0 0 0 5 1 0 1 5 2 0 2 5 3 0 Voltage V 200 x 50 x Flourescent lamp Current µA Current µA 40 x 10 x Incandescent lamp Voltag...

Page 10: ...th copper electrodes When the output terminal areas are to be reinforced by resin use a soft resin Please contact Panasonic when selecting the resin 2 7 2 General precautions 1 The Sunceram II cells for indoor use employ glass for the substrate and could result in injury Licking the cells or putting them in your mouth is dangerous and should not be done 2 Do not drop Sunceram II cells for indoor u...

Page 11: ...try 3 2 Features The specifications of these cells which are capable of utilizing sunlight irradiation make them ideal for outdoor use The cells have a special construction to enable higher currents to be transferred to outside applications than those generated by cells for indoor applications A variety of sizes and outputs can be supported by the production method applying screen printing It is p...

Page 12: ...BP 373334C 37 0X33 0 14 5 5 50 15 5 BP 376634C 37 0X66 0 31 5 5 50 33 0 BR 378234C 37 0X82 0 40 0 5 50 43 0 BR 160334C 165 0X27 0 650 5 50 71 5 BR 748264C 74 0X82 0 6 4 40 0 11 0 43 0 BR 111108C 110 0X110 0 8 0 76 0 12 0 84 0 BR 160416C 162 5X41 0 16 0 19 1 24 0 20 5 BP 160516C 162 5X48 0 22 1 24 0 23 5 BR 160716C 162 5X73 0 34 0 24 0 36 0 Note 1 Measurement temperature 25 C 77 F Note 2 Light sour...

Page 13: ...t mA 50 40 30 20 10 0 100mW cm 75mW cm 50mW cm 25mW cm Current mA Voltage V 0 1 2 3 4 5 AM1 5 BP 246618C BP 242221C AM1 5 Voltage V 0 1 2 3 4 5 100mW cm 75mW cm 50mW cm 25mW cm 100mW cm 75mW cm 50mW cm 25mW cm Current mA Voltage V 0 2 4 6 8 10 AM1 5 BP 373334C BP 376634C AM1 5 Voltage V 100mW cm 75mW cm 50mW cm 25mW cm 0 2 4 6 8 10 50 40 30 20 10 0 Current mA 50 40 30 20 10 0 Current mA Voltage V ...

Page 14: ... 3 seconds Soldering flux Must comply with JIS class B or milder or with MIL class RA or milder With lead wire L type Do not pull the leads beyond what is required Copper electrodes type is designated by the suffix not added to the model number C Standard units come with copper electrodes When the output terminal areas are to be reinforced by resin use a soft resin Please contact Panasonic when se...

Page 15: ...a strong impact They may suffer damage or their performance may be impaired 3 Since the electricity is generated by the irradiation of light from the light sensing side glass surface do not make this surface dirty with oil or other substances If this surface becomes dirty wipe off the dirt before use 4 The rear surface of the Sunceram II cells for outdoor use is coated with resin for protection Be...

Page 16: ... conditions Highly resistant to intense sunlight The resin frame is well suited to the environment The shape of the frame enables easy installation 4 3 Applications Roadway markation lights Outdoor clocks Garage and storeroom ventilation and lighting systems Battery Chargers Other outside power applications 4 4 Specifications Light source AM 1 5 100mW cm2 Model No Dimensions mm Vp V 1p mA Voc V 1s...

Page 17: ...mW cm 75mW cm 50mW cm 25mW cm 0 4 8 12 16 20 24 28 Voltage V 100 80 60 40 20 0 Current mA BP 181816M AM1 5 100mW cm 75mW cm 50mW cm 25mW cm 0 4 8 12 16 20 24 28 Voltage V 100 80 60 40 20 0 Current mA BP 181216M AM1 5 100mW cm 75mW cm 50mW cm 25mW cm 0 2 4 6 8 10 12 14 Voltage V 200 160 120 80 40 0 Current mA 100mW cm 75mW cm 50mW cm 25mW cm 0 2 4 6 8 10 12 14 Voltage V 200 160 120 80 40 0 Current ...

Page 18: ...g paint thinner or other organic solvents to clean the Sunceram II modules for outdoor use Under normal operating conditions grainy debris i e dirt dust will not significantly degrade performance However efficiency could be reduced if the module surface becomes extremely dirty If module becomes soiled wipe it using a cloth moistened with water 2 For safety the glass covering the module s collectin...

Page 19: ...oad variety of lighting methods and flash intervals such as simple flashing chasing etc These can be set using external switches The control circuitry and the Ni Cd batteries are water resistant and the external terminal parts can also be treated to make them resistant to water producing a high reliability power supply unit 5 2 Features The aluminum die cast frame provides long term reliability fo...

Page 20: ...f Use Daily Sunlight average installation Useable Consumption Current Winter in the cold regions of Japan 1 2 kWh m2 80 mAh day Winter in the Pacific Ocean side of Japan 2 0 kWh m2 130 mAh day Japanese average throughout the year 3 5 kWh m2 240 mAh day Japan in the summer 4 5 kWh m2 310 mAh day This assumes 85 charge and discharge efficiency Notes and Cautions Regarding Use 1 When the photorecepto...

Page 21: ...power supply N type and night time flashing F type are all available The Sunceram II power units for outdoor use can also be custom made according to the required specifications 6 2 Features Built in Ni Cd batteries and control circuit Solar cell distinguishes between night and day N type F type Short circuit protective device built in This unit can provide power output for automatic flashing of L...

Page 22: ...ttery storage capacity 1200mAh 1 5C Operating voltage and current of solar cell BP 181208M 8V Average l00mA Light intensity AM 1 5 l00mW cm2 Load current 1 5A Max Weight 800g N type and F type Illumination of switching 20 200 lux F type standard setting Flashing cycle 1 second Duty ratio 5 6 5 Dimensions mm 200 130 120 0 5 100 0 5 4 0 2 5 142 110 14 5 35 ...

Page 23: ...nuous lighting or flashing type of LED and flashing cycles are designed to meet users needs 7 2 Features Compact structure comprising a control circuit and rechargeable batteries Easy use design with solar cell and day night discriminating function long life high re liability design combining solar ray resistant solar cell with lithium rechargeable batteries or nickel cadmium batteries with excell...

Page 24: ...0mW cm2 or more Illuminance to trigger lighting 30 to 300 x outdoor light standard design Lighting duration approx 14 hours standard design Flashing cycle approx 1 0 second standard design battery voltage 1 3V LED High luminance 5φ red standard design Service temperature range 10 C to 50 C Weight approx 5g circuit board Dimensions unit mm Note For detailed dimensions of the solar cell refer to the...

Page 25: ...outdoor 10mW cm2 or more Illuminance to trigger lighting 30 to 300 x outdoor light standard design Lighting duration approx 14 hours standard design Flashing cycle approx 1 0 second standard design battery voltage 1 25V LED High luminance 5φ red standard design Service temperature range 10 C to 50 C Weight approx 5g circuit board Dimensions unit mm Note For detailed dimensions of the solar cell re...

Page 26: ...r more approx 10 hours cloudy outdoor 10mW cm2 or more Illuminance to trigger lighting 30 to 300 x outdoor light standard design Lighting duration approx 14 hours standard design Flashing cycle approx 3 5 second standard design battery voltage 1 25V LED High luminance 10φ green standard design Service temperature range 10 C to 50 C Weight approx 19g circuit board Dimensions unit mm Note For detail...

Page 27: ... and screw heads with epoxy adhesive ensures that the unit will not be easily dislodged The light can be designed to flash at the desired interval Panasonic is also open to consultation about special specifications concerning the unit casing the color of the LED the method used to secure the units etc 8 2 Features High brightness LED which automatically flashes at night Compact size and light weig...

Page 28: ...mp Color of unit casing Black standard also available in white depending on quantity ordered 8 5 Installation operating precautions Before securing the warning light set the switch at the back of the unit to ON and adhere the accessory seal to the groove provided for the switch Bear in mind that the amount of power generated will be significantly reduced if a tree or structure is situated to the s...

Page 29: ...agram below They consist of a sheet of silicon called a P type approximately 0 4mm thick with a second thinner 1 2 µm layer called a N type on top of it The place where the P type and N type meet is called a P N junction It constitutes the heart of the solar cell and plays the most important role in the conversion of light to electricity The solar cell consists of the P N junction with electrodes ...

Page 30: ...rcuit voltage V Voc 25 20 15 10 5 0 2 5 2 0 1 5 1 0 0 5 0 2 0 4 0 6 0 8 1 0 Light intensity kW m 2 Short circuit current A Isc Tc 25 C Voc Isc Operating voltage V Operating current A Ee 1 0kW m2 0 5 10 15 20 25 30 56 C 25 C 2 00 1 75 1 50 1 25 1 00 0 75 0 50 0 25 0 Open circuit voltage short circuit current vs light intensity Operating current vs operating voltage Fixing hole 4 9 5 Terminal box Al...

Page 31: ... Isc Tc 25 C Voc Isc 0 24 0 20 0 16 0 12 0 08 0 04 0 0 Open circuit voltage short circuit current vs light intensity Operating current vs operating voltage Al frame Terminal box Fixing hole Dimensions mm 4 0 9 5 30 30 30 201 21 187 145 Open circuit voltage V Voc 24 20 16 12 8 4 0 0 2 0 4 0 6 0 8 1 0 Light intensity kW m 2 Short circuit current A Isc Tc 25 C Voc Isc 0 42 0 35 0 28 0 21 0 14 0 07 0 ...

Page 32: ...orts are installed with the light collecting surface facing due south and at an angle of 30 degrees standard 10 2 Features Stands up to the elements for superior reliability over the long term Simple set up and maintenance make it easy to provide a stable power supply 10 3 Specifications Model No Output Number of modules series x parallel Array support installation method Approximate weight kg Ext...

Page 33: ... L30 x 30 x 3t 1 6 The cable 6 in this figure is optional However a cable that outputs 1 m from the terminal block is included PART TABLES Part No Product Matter Q ty 1 Solar module BP K36KS 2 2 Array support angle L40 x 40 x 3t 2 3 Array support angle L40 x 40 x 3t 2 4 Module fixing angle L40 x 40 x 3t 2 5 Strengthen angle L30 x 30 x 3t 1 6 The cable 6 in this figure is optional However a cable t...

Page 34: ...le L40 x 40 x 3t 1 6 The cable 6 in this figure is optional However a cable that outputs 1 m from the terminal block is included PART TABLES Part No Product Matter Q ty 1 Solar module BP HK36K 1 2 Array support angle L30 x 30 x 3t 2 3 Array support angle L30 x 30 x 3t 2 4 Module fixing angle L30 x 30 x 3t 2 5 Strengthen angle SUS304 1 5 3 6 The cable 6 in this figure is optional However a cable th...

Page 35: ...0 x 30 x 3t 2 4 Module fixing angle L30 x 30 x 3t 4 5 Strengthen angle SUS304 1 5 2 6 Dimensions table Model No Output W Dimensions A mm B mm C θ BP HK36KP1N 24 0 445 880 120 265 30 50 BP QK36HP1N 11 5 340 645 120 265 30 50 BP K36KSP1N 54 0 448 1500 120 265 30 50 Part tables Part No Product Matter Q ty 1 Solar module BP QK36 1 2 Array support angle L30 x 30 x 3t 2 3 Array support angle L30 x 30 x ...

Page 36: ...ng voltage V Return voltage V Maximum allowable input current External view and parts diagram No BP H3CCUL Lead storage battery Alkaline storage battery 14 5 15 5 13 5 14 5 3 7 BP H10CCUL 10 8 Discharge protection unit Model No Type of Battery Used Overcharge Protection Circuit Operating Voltage V Overcharge Protection Circuit Restore Voltage V Overdischarge Protection Circuit Operating Voltage V ...

Page 37: ...CUL H3CCU Figure 8 BP H10CCUL H10CCU Fixing hole 4 4 5 70 5 14 5 60 80 115 Terminal support Screw 7 M3 5 1 2 3 4 5 6 7 Solar cell Storage battery Load GND 105 125 19 51 15 Radiator fin Solar cell Storage battery Load GND 194 Screw 7 M4 Radiator fin 170 17 5 Terminal support 77 Fixing hole 4 3 5 100 5 184 80 ...

Page 38: ...Panasonic Solar Cells Handbook Page 37 August 1998 OVERCHARGE PROTECTION CIRCUITS CONTINUED Figure 9 BP CD10A12V PVIN BATT OUT 4 4 5 140 150 83 50 36 ...

Page 39: ... BSBM 1 12 Cover Polycarbonate 1 13 Change over switch for measuring 1 A B C D E F G H 3 4 1 2 5 6 7 8 9 10 11 12 13 365 335 300 265 235 200 4 8 5 136 190 I J K A B C D E H G F V I J K 335 365 53 134 187 200 400 4 8 5 300 30 3 4 1 2 5 6 7 8 9 10 11 12 13 Made to order Indication Indication A Constant position G Constant position B Output current H Waiting current C Output voltage I Solar cell D Lo...

Page 40: ...ase consult your Panasonic representative for specific design details 12 1 Solar Cell Power Supply System Basic Configuration 1 Direct Connection to Load This type of configuration is suitable for applications such as warehouse ventilation systems car ventilators or irrigation pumps in which equipment is driven only when there is illumination 2 Paired with Storage Battery Direct load In this confi...

Page 41: ... calculated 1 Calculation of average current consumption per day 1R Ah day IL A x T h day Equipment operating voltage VL V Equipment current consumption IL A Equipment operating time T h day 2 Calculation of operating current IP 3 Calculation of storage battery capacity C 4 Last the operating voltage VP of the solar cell is calculated VP storage battery charging voltage additional voltage required...

Page 42: ... solar cell 3 Calculation of storage battery capacity 4 Calculation of solar cell operating voltage On the basis of the above the most appropriate solar cell model is the solar module BP HK36K Vp 16 7V Ip 1 44A the most appropriate storage battery is the sealed lead acid battery LS 90 6E 12V 90Ah Number of non illumination backup days 20 Set at 7 30 days taking into account equipment performance S...

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