CN103765723A - Dual power SMPS for a modular lighting system - Google Patents
Dual power SMPS for a modular lighting system Download PDFInfo
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- CN103765723A CN103765723A CN201280040187.7A CN201280040187A CN103765723A CN 103765723 A CN103765723 A CN 103765723A CN 201280040187 A CN201280040187 A CN 201280040187A CN 103765723 A CN103765723 A CN 103765723A
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- electric power
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
- H02J9/065—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads for lighting purposes
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- Circuit Arrangement For Electric Light Sources In General (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Methods and systems described herein provide efficient lighting where electric grid systems are unreliable. One aspect includes a light assembly that includes an input to receive power from a power source, a controllable power supply having a control input, a power input coupled to the first input, and an output to provide a voltage level controllable based on a control signal received at the control input, a light circuit coupled to the output of the controllable power supply and configured to provide output light in response to the output voltage, a feedback circuit configured to detect a current to a battery and a voltage across the battery and having an output coupled to the control input of the controllable power supply to provide the control signal to the controllable power supply based on at least one of the current to the battery input and the voltage across the battery.
Description
Background
1. invention field
According at least one execution mode of the present invention, be usually directed to switch-mode power supply and be particularly related to the system and method for the twin-power switch mode power supply (SMPS) that is provided for modular illuminator.
2. the discussion of correlation technique
Solar energy, battery and electrical network illuminator are well-known, comprise and use incandescent lamp bulb, fluorescent lamp bulb and light-emitting diode (LED) as those illuminators of light source.At undeveloped and/or developing country and rural area, bad when the availability of grid power system keeps fashion at most reliably, and spare energy system may installation and operation somewhat expensive and always not compatible with available light source.Efficiently illuminator can be used in particular for having insecure and or the region of undue expensive network system.The designer of these illuminators, when providing reliable power supply to lighting module, tries every possible means to reduce the parts in illuminator.
Summary of the invention
At least one execution mode as herein described is for efficient illuminator, and it is used in particular for having the region of the network system of insecure and/or undue costliness.
A first aspect of the present invention is for a kind of light fixture, it comprises first input end, controlled electric power supply department, cell input terminal, lighting circuit and feedback circuit, described first input end receives electric power from power supply, described controlled electric power supply department has control input end, be coupled to the power input end of first input end, with the output that output voltage is provided, described output voltage has the controlled voltage level of control signal based on receiving at place, control input end, described cell input terminal is coupled to the output of controlled electric power supply department, and be configured to be coupled to battery, described lighting circuit is coupled to the output of controlled electric power supply department and is configured to provide output light in response to output voltage, described feedback circuit is configured to detect to the electric current of battery and the voltage at battery two ends and has the output of the control input end of being coupled to controlled electric power supply department, with at least one in the voltage at the electric current based on to cell input terminal and battery two ends, to controlled electric power supply department, provide control signal.
In light fixture, controlled electric power supply department can also comprise the PWM controller that is coupled to power input end.PWM can be configured to produce the pulse width modulating signal with duty ratio.PWM controller can also be configured to have to indicate at least one in the electric current of cell input terminal and the voltage at battery two ends based on control signal higher than the first state of threshold value, reduce the duty ratio of pulse width modulating signal.PWM controller also can be configured to have based on control signal the duty ratio that the second state that is different from the first state increases output voltage.Controlled electric power supply department can comprise the transformer that is configured to receive from power input end electric power.First input end can be configured to receive electric power from AC power supplies.
Light fixture can also comprise the second input, and it is configured to receive electric power from sun-generated electric power.In addition, light fixture can comprise DC-DC transducer and transducer feedback circuit in addition, described DC-DC transducer has transducer control input end, be coupled to the power input end of the second input, with the converter output end that converter output voltage is provided, described converter output voltage has the controlled transducer voltage level of transducer control signal based on receiving at place, transducer control input end, described transducer feedback circuit is configured to detect to the electric current of battery and the voltage at battery two ends and has the output of the transducer control input end of being coupled to DC-DC transducer, at least one in the voltage at its electric current based on to cell input terminal and battery two ends provides transducer control signal to DC-DC transducer.Lighting circuit can be coupled to converter output end and be configured to provides output light in response to converter output voltage.
Another aspect of the present invention is for a kind of method of the room that throws light on.The method comprises from power supply reception electric power, generation derives from the DC voltage of the electric power of reception, this DC voltage has a voltage level, DC voltage is put on to lighting circuit, DC voltage is put on to battery, detect the electric current to battery, detect the voltage at battery two ends, and at least one the control voltage level in the voltage at the electric current based on to battery and battery two ends.
In the method, the action of control voltage level can also comprise that generation has the pulse width modulating signal of duty ratio.If higher than threshold value, the action of controlling voltage level can also comprise the duty ratio that reduces pulse width modulating signal at least one in the electric current of battery and the voltage at battery two ends.The action of controlling voltage level can also comprise the duty ratio that increases pulse width modulating signal, until the voltage that reaches threshold value or battery two ends to the electric current of battery reaches threshold value.The action that produces DC voltage can also comprise the voltage that uses transformer to reduce the electric power that derives from reception.The action that receives electric power from power supply can also comprise at least one the reception electric power from AC power supplies and sun-generated electric power.The method can also comprise from battery provides electric power to lighting circuit.
Another aspect of the present invention is for a kind of light fixture, it comprises at least one input that receives electric power from power supply, controlled electric power supply department, cell input terminal, lighting circuit and control device, described controlled electric power supply department has control input end, be coupled to the power input end of at least one input, and output, described cell input terminal is coupled to the output of controlled electric power supply department, described lighting circuit is coupled to the output of controlled electric power supply department and is configured to provide output light, described control device is used for control power supply portion so that the voltage through regulating to be provided to lighting circuit, and provide charging current and the charging voltage through regulating to the battery that is coupled to cell input terminal.
In this light fixture, at least one input can comprise the second input that is configured to be coupled to the first input end of AC power supplies and is configured to be coupled to sun-generated electric power.Controlled electric power supply department can be configured to provide output DC electric power to cell input terminal and lighting circuit.This light fixture can also comprise the forfeiture for detection of the AC electric power at least one input end, and for the device of electric power is provided from battery to lighting circuit.In this light fixture, for the device of controlling, can comprise device and the device for charging the battery with the second pattern for charging the battery with first mode, the constant in fact electric current of described first mode supply is to battery, the constant in fact voltage at described the second pattern supply battery two ends.
Accompanying drawing summary
Accompanying drawing needn't proportionally be drawn.In the accompanying drawings, each identical or almost identical parts shown in each figure of identical digitized representation.For object clearly, be not that each parts is marked in each accompanying drawing.In the accompanying drawings:
Fig. 1 shows according to the functional block diagram of the illuminator of an execution mode.
Fig. 2 A shows the functional block diagram for the duplicate supply SMPS of the execution mode of Fig. 1.
Fig. 2 B shows the more detailed functional block diagram of the duplicate supply SMPS showing in Fig. 2 A.
Fig. 2 C shows the functional block diagram for the DC-DC transducer of the execution mode of Fig. 1.
Fig. 3 shows the LED array for the execution mode of Fig. 1.
Fig. 4 shows according to the exploded view of the light fixture of an execution mode.
Fig. 5 shows the first perspective view of the light fixture in Fig. 4.
Fig. 6 shows the second perspective view of the light fixture in Fig. 4.
Describe in detail
As mentioned above, need to reduce the quantity of the parts in efficient illuminator, to reduce the cost of whole system, the solution that provides uncomplicated in function simultaneously and be easy to realize.
Apparatus and method described herein are not limited to their application aspect structure detail described in specification or parts shown in the drawings and arrangement details.Described apparatus and method can have other execution modes and can be put into practice or be performed in every way.Only, for exemplary purpose, provide specific embodiment herein, and be not intended to limit.Particularly, the similar action being not intended to from any other execution mode in conjunction with action, element and the characteristic of any one or a plurality of execution mode discussion is got rid of.And phrase used herein and term are for descriptive object, and should not be considered as restrictive." comprising " used herein, " comprising " or " having ", " containing ", " relating to " and its variant, mean and contain list and its equivalent terms and addition Item thereafter.
At least some execution modes disclosed herein are for modular, efficient illuminator and method, it comprises LED illuminator that can be based on the operation of DC power supply and AC power supplies, described DC power supply comprises battery supply, fuel cell and solar energy, and described AC power supplies comprises communal facility electrical network, generator or other AC power supplies.At least some execution modes are for LED illuminator, and it can be arranged to duplicate supply mode operation, to support the low power operation based on battery electric power.At least some execution modes are for the supply of twin-power switch mode power is provided, and it is configured to regulate the supply of electric power from AC power supplies and DC power supply, and its electric power that is configured to provide constant is to LED light source and battery, with rechargeable battery.
Fig. 1 is for the functional block diagram of the Modular LED illuminator 100 according to an execution mode.Illuminator 100 comprises LED array 102, duplicate supply output control circuit 104, LED driver circuit 106, testing circuit 108, mode switch 110 and 112, battery monitor circuit 114, DC-DC transducer 118, twin-power switch mode power supply (SMPS) 120, battery 122, sun-generated electric power 124 and AC power supplies 126.In different execution modes, functional circuit can with the differently combination shown in Fig. 1.
Be in operation, at least one electric power providing based in AC power supplies 126, sun-generated electric power 124 and battery 122, LED array provides light.When moving based on AC power supplies 126 or based on solar energy operational mode, duplicate supply SMPS120 provides a road output voltage to LED driver 106 and LED array 102, and provides another road output voltage and constant electric current to battery 122.
In AC operational mode, mode switch 112 disconnects isolating battery, and mode switch 110 is configured to the output of duplicate supply SMPS120 to be coupled to LED driver circuit 106.LED driver circuit 106 receives the output voltage of duplicate supply SMPS120, and for LED array 102 provides constant output current, to light LED.In solar energy operational mode, mode switch 110 is configured to the output of DC-DC transducer 118 to be coupled to LED driver circuit 106.In one embodiment, DC-DC transducer is configured to receive and have the DC electric power of the voltage between 16 volts and 21 volts from external solar electric power system 124, and is configured to provide the output DC electric power of 14.5 volts to battery 112 and LED driver circuit 106.In other embodiments, can use other voltages, so that operation is adapted to other solar electric power systems.
When duplicate supply output control circuit 104 moves based on battery electric power in illuminator 100, for the low power operation pattern of illuminator 100 is provided.In AC and solar energy operational mode, duplicate supply output control circuit 104 is controlled as and operates in normal, high power consumption operating mode.
In battery operation pattern, from battery 122, to internal switch 112, provide DC electric power, and mode switch 112 and mode switch 110 both be configured to battery output to be coupled to the input of LED driver.In one embodiment, illuminator is configured to use the battery operation of the output voltage with 11.5 volts to 13.5 volts, but in other embodiments, can use other cell voltages.In at least one execution mode, illuminator be configured to use hold more greatly, the more external cell operation of the battery of high power capacity, yet, in other embodiments, except external cell, can use internal cell, or can use internal cell to replace external cell.
In one embodiment, use the resistors in parallel of connecting with LED array to realize duplicate supply output control circuit 104, and use switch (for example triode) to change the resistance value of connecting with LED array, to be restricted to the drive current of LED array.In one embodiment, in high power consumption operating mode, the total current of passing LED array is 580mA, but in low power operation pattern, drops to 500mA.Yet, according to the quantity of the LED for array and type, in other embodiments, can use other driving current value.
As shown in Figure 1, mode switch 110 is pulling switches, and user can use this pulling switch electric power to be provided or electric power is not provided to illuminator 100.As shown in Figure 1, in one embodiment, pulling switch is connected between duplicate supply SMPS120 output, internal switch 112 and LED driver 106.
In one embodiment, internal switch 112 is gate-controlled switches, for example diode.By forward bias or reversed biased diodes, can control this switch.When can use from duplicate supply SMPS120 and/or DC-DC transducer 118 any one power time, reversed biased diodes, thus from battery 122, disconnect LED drivers 106.When can not use from duplicate supply SMPS120 or DC-DC transducer 118 any one electric power time, forward bias diode, thus from battery 122, to illuminator 100, provide electric power.In one embodiment, if can use solar energy or AC electric power, switch 112 is controlled in open position, and if cannot use both, closing switch 112 is to be coupled to LED driver 106 by battery 122.
In one embodiment, if can use the solar electric power from DC-DC transducer 118, between battery 122 and LED driver 106, share electric power.Available power from solar energy source can be used for providing electric power to LED array 102, and any dump power will be for giving battery 122 chargings.
In one embodiment, battery monitor circuit 114 is coupled to output and the LED driver 106 of battery 122.The residual charge of this circuit monitors battery, and when its whole charge level of battery consumption 50% time, to driver 106 transmitted signals to cut off the power supply of LED array 102.In other embodiments, battery may consume 80% of its whole charge level.When its whole charge capacities of battery consumption 50% time, red indication LED is bright, and pulling switch 110 is on-position.
With reference now to Fig. 2 A,, it shows the block diagram of an example of the duplicate supply SMPS120 that is coupled to battery 122 and load 210.Duplicate supply SMPS120 comprises PWM(pulse-width modulation) controller 202, transformer 204, feedback circuit 206, rectifier and filter 214 and multiplexer 208.In one embodiment, the lighting circuit of load 210 for comprising LED driver 106 and LED array 102.
When based on AC power supplies 126 operation, duplicate supply SMPS120 receives the AC electric power of input and converts AC electric power to DC electric power.During converting AC electric power to DC electric power, the AC electric power of input can be by EMI(electromagnetic interference) filter carrys out filtering, and by rectifier, convert DC electric power to and by capacitive filter, come level and smooth.In one embodiment, due to the input AC voltage of 230 volts of 50Hz, the DC electric power of generation has the relative high voltage of 230 volts.In other embodiments, other input voltages can be used and single-phase or polyphase electric power can be used.
Duplicate supply SMPS120 also provides electric power to charge the battery.Can be based on AC electric power to battery 122 charging, if or can not use AC electric power time, the solar electric power based on being provided by DC-DC transducer 118 is to battery 122 chargings.Charge the battery based on two kinds of patterns: constant-current mode and constant-voltage mode.These two kinds of charge modes make battery when charge cycle finishes, avoid overcharging, and when charging finishes complete charge preferably.If battery discharges, duplicate supply SMPS charges the battery the electric current with constant in constant-current mode, until the electric charge on this battery reaches battery current charge threshold.Once the voltage on battery reaches battery current charge threshold, duplicate supply SMPS120 charges the battery the voltage with constant in constant-voltage mode.Duplicate supply SMPS120 charges the battery the voltage with constant, until this battery reaches cell voltage charge threshold, it indicates this battery has been completely charged.
For switching between pattern, duplicate supply SMPS120 determines electric current and the voltage on battery.In order to determine electric current and the voltage on battery, the voltage that feedback circuit 206 receives from transformer 204, and provide the voltage of the electric current output of sensing to indicate to multiplexer 208.The voltage signal indication of the voltage at battery 122 two ends is also provided to multiplexer 208.If reach battery current charge threshold through the electric current of battery, if or the voltage on battery reach cell voltage charge threshold, multiplexer 208 triggers feedback signals to PWM controller 202.
The feedback providing to PWM controller is described in more detail with reference to figure 2B.As shown in Figure 2 B, transformer 204 comprises primary coil, secondary coil and ancillary coil.202 modulation of PWM controller are to the electric power of the primary coil supply of transformer 204.Primary coil is responded to AC voltage in secondary coil, usings and produces compared with the AC voltage of short arc as secondary output.Primary coil is also responded to AC voltage in ancillary coil, usings and produces compared with the AC voltage of short arc as auxiliary output.Auxiliary output is for providing bias voltage to optical coupler switch 212, and this optical coupler switch 212 is for isolating the feedback of PWM controller 202.In one embodiment, controlled output voltage is according to the variation from 11.5 volts to 14.3 volts of the charged state of battery.
In one embodiment, if can use the solar electric power from solar energy input 124, will use solar electric power to battery 122 chargings.In an example, on node 224, provide the DC electric power from DC-DC transducer 118.In an example, if simultaneously can use AC electric power and solar electric power, preferentially select solar electric power because from the voltage of DC-DC transducer 118 voltage higher than the output from rectifier and filter circuit 214.In an example, from the voltage of DC-DC transducer 118, be 14.5 volts, and be 14.3 volts from the voltage of rectifier and filter circuit 214.When the supply of solar electric power diminishes, AC electric power is taken over and is provided electric power to battery 122 and load 210.
As shown in Figure 2 B, feedback circuit 206 comprises current-sense resistor R3, and it and in an example, has the resistance in 0.03 Europe between SMPS120 ground connection and battery 122 ground connection.Feedback circuit has operational amplifier comparator 216, it compares the pressure drop on current-sense resistor R3 and reference voltage 218, and give the electric current of multiplexer 208 output sensings, the pressure drop on described current-sense resistor R3 is as the voltage indication of the electric current on battery.Multiplexer 208 is comprised of two diode D4 and D5.Diode D4 receives the output from operational amplifier comparator 216, and the sensing voltage on diode D5 reception battery, and it is reduced in proportion by voltage divider 220.Multiplexing feedback signal from D4 and D5 is applied to shunt regulator 220.In one embodiment, shunt regulator 220 is for having the voltage stabilizing didoe of 2.5 volts of internal reference voltages.
To describe according to the function of the double mode charging circuit of an execution mode now.Magnitude of voltage used herein, current value and resistance value be only for exemplary purpose, and can use other values according to the different qualities of battery.According to an execution mode, if battery is 80% electric discharge, cell voltage will be approximately 11.5 volts.The voltage that approaches full electric charge is that 13.5 volts and full charge voltage are approximately 14.1 volts.Yet other batteries can have other charge characteristics.In one embodiment, giving the constant current of battery supplied is 3 amperes, yet also can use other constant currents.
Due to the electrical potential difference between SMPS voltage and cell voltage, be connected to the discharge battery of duplicate supply SMPS120 by the large electric current causing to battery.This large electric current to battery is by the voltage producing on sense resistor R3, and described sense resistor R3 is connected to the non-inverting input of operational amplifier comparator 216.The reference voltage being produced by reference voltage circuit 218 is 0.09 volt, and is applied to the reverse input end of operational amplifier 216.
When the non-return input voltage of operational amplifier is greater than reverse input voltage, operational amplifier output voltage is by forward biased diode D4.The voltage being provided by D4 diode at shunt regulator 222 places is by the internal reference voltage that is greater than 2.5 volts, and shunt regulator 222 will provide feedback control signal to PWM controller by optical coupler, to reduce the pulse duration of the PWM voltage at primary coil place.Diode D4 will be down to 3 amperes in forward bias until to the electric current of battery.
When battery is recharged, cell voltage will be reduced to the electrical potential difference between increase and charger voltage and cell voltage and go to zero.In one embodiment, for the electric current with constant charges the battery, PWM controller 202 will increase the duty ratio of PWM controller potential pulse, and the feedback signal that comes from optical coupler 212 is disappeared.By this way, during constant-current mode, battery current remains on 3 amperes.
When the voltage in battery charger and load increases, the electrical potential difference between charger voltage and cell voltage reduces.When the voltage in load reaches 14.3 volts, voltage divider is forward bias diode D5, and sends feedback signal to PWM controller.When battery in or while approaching full electric charge, in battery 122 and load 210, keep constant voltage.
With reference now to Fig. 2 C,, it shows with the electric power that feedback scheme is controlled solar electric power input 124 and to load, provides electric power and the block diagram of an example charging the battery.Be similar to reference to the feedback scheme for AC electric power described in figure 2A and 2B, the feedback scheme in Fig. 2 C can be used in the solar electric power that is adjusted to battery 122 and load 210.As shown in Figure 2 C, this feedback scheme comprises and uses DC-DC transducer 118, and it comprises PWM(pulse-width modulation) controller 226, transformer 228, rectifier and filter circuit 230 and multiplexer 232.
In the time can using solar electric power, DC-DC transducer 118 receives the DC electric power that comes from sun-generated electric power 124.PWM controller 226 receives the DC electric power that comes from sun-generated electric power, and the output power of high-frequency impulse width modulated is provided to transformer 228.In one embodiment, DC electric power has the voltage level between 16 volts and 21 volts.Transformer 228 receives electric power from PWM controller 226, and reduces the DC voltage receiving and export AC voltage to provide.By rectifier and filter circuit 230, can carry out rectification, Filtering and smoothing to the output AC voltage of transformer 228, to provide the output DC electric power of 14.5 volts to battery 112 and load 210.
Be similar to the feedback scheme in Fig. 2 A and 2B, resistor R3 allows DC-DC transducer 118 sensings to the electric current of battery 122 and the voltage on battery 122.If battery reaches battery charge thresholds, multiplexer 208 is triggered to the feedback signal of PWM controller 202.
In one embodiment, as shown in Figure 3, use the 3x30 array of compact arranged LED to realize LED array 102.In one embodiment, 3 between-line spacing 6.985mm, every row LED interval 8.6mm, each LED has 5mm diameter.In one embodiment, LED has the forward voltage of 3.0 to 3.5 volts, the peak forward current of 20mA, reverse voltage, the reverse current of 10 micromicroamperes, the luminous intensity of 1500 – 2000mod of 5 volts, and is white light at 5800K wavelength.In other embodiments, can use the LED with different qualities.In one embodiment, green LED, red LED and yellow led are also provided, and in this embodiment, the luminous indication of green LED can be used and comes from the electric power of mains supply or solar panels and charging the battery, the luminous pilot cell of yellow led is full electric charge, and the luminous pilot cell of red LED exhausts and cut off load from battery.
Fig. 4 shows according to the exploded view of the LED light fixture 400 of an execution mode, and Fig. 5 and Fig. 6 show the perspective view of LED light fixture 400.Except AC power supplies, sun-generated electric power and battery are all arranged in LED light fixture and at Fig. 4, do not show, the parts of the functional block diagram of illuminator 100 are included in LED light fixture 400.Light fixture 400 comprises protecgulum 402, housing 404, LED board bar 406, switched-mode power supply plate 408, LED driver plate 410, solar panels 411, bonnet 412, solar electric power input terminal 414, battery electric power input terminal 415 and AC power input end 416.LED light fixture also comprises pulling switch 418 and three LED light 419.In one embodiment, as shown in Figure 4, use screw rod 417 that LED light fixture 400 is tightened up.
As more detailed discussion below, at least one execution mode, LED light fixture 400 is modular, upgradeable assembly, and it has several versions, and the particular version based on assembly can change the concrete electronic device comprising in assembly.More particularly, can remove or upgrade SMPS plate and solar panels to change the version of LED light fixture.In order easily adapting to, SMPS plate and solar panels to be changed, in one embodiment, to use the flexible cable between these plates, connector box connector is coupled to cable on these plate bodys, has realized the connection between these plate bodys.As shown in Figure 4, LED driver plate, solar panels and SMPS plate are installed in bonnet 412.
LED board bar in an execution mode comprises the LED array 102 being arranged on printed circuit board (PCB), and this plate is electrically coupled to LED driver plate 410.When assembling, LED be arranged on housing 404 before.
In execution mode discussed above, PWM controller as a part of controlled SMPS so that the voltage and current of adjusting to be provided to battery and load.In other embodiments, can use the controlled electric power supply department of other types.
The execution mode of duplicate supply SMPS as above can be applied for other, comprises computer and computer peripheral, and for example the consumer electronics product of mobile phone, also has battery charger.In at least some execution modes, SMPS is used single PWM controller to provide the adjusting to battery charger and voltage to load.In the above-described embodiment, three kinds of main power supplys have been discussed, AC electrical network, battery and solar energy.In other embodiments, light fixture also can be configured to use other power supply operations, comprises fuel cell and wind energy.
Above-mentionedly for front and rear, left and right, top and bottom, upper and lower and analog any, mention that object is to be convenient to describe, rather than by native system and method or their component limitations in orientation any position or space.
Some execution modes of system and method as herein described or mentioning also of any singulative of element or action can be included the execution mode that comprises a plurality of these elements, and any one execution mode herein or the mentioning also of plural form of element or action can be included the execution mode that only comprises an element.It is the configuration of odd number or plural number that the mentioning of odd number or plural form is not intended to the system of announcing at present or method, their parts, action or element limits.
Any execution mode disclosed herein can be in conjunction with any other execution mode, and for mentioning of " execution mode ", " some execution modes ", " alternate embodiments ", " various execution mode ", " execution mode " or homologue, need not to be mutual repulsion and be intended to show that specific feature, structure or characteristic in conjunction with described in this execution mode can be included at least one execution mode.These terms used herein needn't all relate to identical execution mode.Any execution mode can be combined with any other execution mode in any mode being consistent with aspect disclosed herein and execution mode.For mentioning of "or", can be interpreted as exhaustive, to such an extent as to use any term described in "or" can indicate one of described term, a plurality of and whole any in these three kinds.
After technical characterictic in accompanying drawing, detailed description or any one claim, follow reference symbol place, only, for the object that increases the intelligibility of accompanying drawing, detailed description and claim, comprised these reference symbols.Therefore, having or not of reference symbol can not have any restrictive impact to the scope of any claim element.
Several aspects of so having described at least one execution mode, are understandable that, for those skilled in the art, various substitute, revise and improve will be easy to occur.These substitute, revise and improve a part that is intended to belong to present disclosure, and meaning within the scope of the invention.Therefore, description above and accompanying drawing are only exemplary, and the claim that scope of the present invention should be based on appended and the suitable explanation of equivalent thereof are determined.
Claims (20)
1. a light fixture, it comprises;
First input end, described first input end receives electric power from power supply;
Controlled electric power supply department, described controlled electric power supply department has control input end, be coupled to the power input end of described first input end and the output of output voltage is provided, and described output voltage has the controlled voltage level of control signal based on receiving in described control input end;
Cell input terminal, described cell input terminal is coupled to the output of described controlled electric power supply department and is configured to be coupled to battery;
Lighting circuit, described lighting circuit is coupled to the output of described controlled electric power supply department and is configured to provide output light in response to described output voltage; And
Feedback circuit, described feedback circuit is configured to detect to the electric current of described battery and the voltage at described battery two ends and has the output of the control input end of being coupled to described controlled electric power supply department, with based at least one to the electric current of described cell input terminal and the voltage at described battery two ends, to described controlled electric power supply department, provide described control signal.
2. light fixture according to claim 1, wherein said controlled electric power supply department also comprises the PWM controller that is coupled to described power input end, described PWM controller is configured to produce the pulse width modulating signal with duty ratio.
3. light fixture according to claim 2, wherein said PWM controller is configured to have indication at least one in the electric current of described cell input terminal and the voltage at described battery two ends based on described control signal and higher than the first state of threshold value, reduces the duty ratio of described pulse width modulating signal.
4. light fixture according to claim 2, wherein said PWM controller is configured to have the second state that is different from described the first state and the duty ratio that increases described output voltage based on described control signal.
5. light fixture according to claim 1, wherein said controlled electric power supply department also comprises transformer, described transformer is configured to receive electric power from described power input end.
6. light fixture according to claim 1, wherein said first input end is configured to receive electric power from AC power supplies.
7. light fixture according to claim 1, also comprises the second input that is configured to receive from sun-generated electric power electric power.
8. light fixture according to claim 7, also comprises:
DC-DC transducer, described DC-DC transducer has transducer control input end, be coupled to the power input end of described the second input and the converter output end of converter output voltage is provided, and described converter output voltage has the controlled transducer voltage level of transducer control signal based on receiving at place, described transducer control input end; And
Transducer feedback circuit, described transducer feedback circuit is configured to detect to the electric current of described battery and the voltage at described battery two ends and has the output of the described transducer control input end of being coupled to described DC-DC transducer, to provide described transducer control signal based at least one to the electric current of described cell input terminal and the voltage at described battery two ends to described DC-DC transducer
Wherein said lighting circuit is coupled to described converter output end and is configured to provides output light in response to described converter output voltage.
9. a method of controlling the operation of light fixture, comprising:
From power supply, receive electric power;
Generation derives from the DC voltage of received electric power, and described DC voltage has a voltage level;
Described DC voltage is applied to lighting circuit;
Described DC voltage is applied to battery;
Detect the electric current to described battery;
Detect the voltage at described battery two ends; And
Based at least one to the electric current of described battery and the voltage at described battery two ends, control described voltage level.
10. method according to claim 9, wherein controls described voltage level and also comprises that generation has the pulse width modulating signal of duty ratio.
11. methods according to claim 10, wherein control described voltage level and also comprise: if at least one in the electric current of described battery and the voltage at described battery two ends higher than threshold value, reduce the duty ratio of described pulse width modulating signal.
12. methods according to claim 10, wherein control described voltage level and also comprise: increase the duty ratio of described pulse width modulating signal, until the voltage that has reached threshold value or described battery two ends to the electric current of described battery has reached threshold value.
13. methods according to claim 9, wherein produce DC voltage and also comprise: use transformer to reduce the voltage that derives from received electric power.
14. methods according to claim 9, wherein receive electric power from power supply and also comprise: at least one from AC power supplies and sun-generated electric power receives electric power.
15. methods according to claim 9, also comprise from described battery and provide electric power to described lighting circuit.
16. 1 kinds of light fixtures, comprising:
At least one input, described at least one input receives electric power from power supply;
Controlled electric power supply department, described controlled electric power supply department has control input end, output and is coupled to the power input end of described at least one input;
Cell input terminal, described cell input terminal is coupled to the output of described controlled electric power supply department;
Lighting circuit, described lighting circuit is coupled to the output of described controlled electric power supply department and is configured to provide output light; And
Control device, described control device is for controlling described supply of electric power portion so that the voltage through regulating to be provided to described lighting circuit, and provides charging current and the charging voltage through regulating to the battery that is coupled to described cell input terminal.
17. light fixtures according to claim 16, wherein said at least one input comprises the second input that is configured to be coupled to the first input end of AC power supplies and is configured to be coupled to sun-generated electric power.
18. light fixtures according to claim 16, wherein said controlled electric power supply department is configured to provide output DC electric power to described cell input terminal and described lighting circuit.
19. light fixtures according to claim 16, also comprise for detection of the forfeiture of the AC electric power at described at least one input end and for the device of electric power is provided from described battery to described lighting circuit.
20. light fixtures according to claim 16, wherein said control device comprises for the first mode with to the constant in fact electric current of described battery supplied to the device of described battery charging with for the device to charge to described battery in the second pattern of the constant in fact voltage of described battery two ends supply.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN874/KOL/2011 | 2011-06-30 | ||
| IN874KO2011 | 2011-06-30 | ||
| PCT/IN2012/000462 WO2013001548A1 (en) | 2011-06-30 | 2012-06-29 | Dual power smps for a modular lighting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103765723A true CN103765723A (en) | 2014-04-30 |
Family
ID=46754737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280040187.7A Pending CN103765723A (en) | 2011-06-30 | 2012-06-29 | Dual power SMPS for a modular lighting system |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2727214A1 (en) |
| CN (1) | CN103765723A (en) |
| AU (1) | AU2012277331B2 (en) |
| WO (1) | WO2013001548A1 (en) |
Cited By (1)
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| CN106796254A (en) * | 2014-08-22 | 2017-05-31 | 伊顿保护系统Ip有限两合公司 | Supply voltage detection device and the method for detecting supply voltage |
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| GB2544562A (en) * | 2015-11-23 | 2017-05-24 | Hanslod Mohamed | LED light fitting and emergency power supply therefor |
| GB2558674B (en) * | 2017-01-10 | 2022-01-19 | Tridonic Gmbh & Co Kg | Apparatus for operating one or more lighting devices |
| US10873206B2 (en) | 2017-05-30 | 2020-12-22 | Schneider Electric It Corporation | System and method for power storage and distribution |
| CN110768236B (en) * | 2019-11-12 | 2023-09-05 | 腾讯科技（深圳）有限公司 | Dual power management device |
| CN113783280A (en) * | 2021-07-21 | 2021-12-10 | 上海汉想新能源科技有限公司 | Lithium battery charging power supply suitable for 1500V photovoltaic system |
| EP4451804A1 (en) * | 2023-04-17 | 2024-10-23 | Tridonic GmbH & Co. KG | Driver and power supply system for lighting means |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2013001548A1 (en) | 2013-01-03 |
| AU2012277331B2 (en) | 2017-01-19 |
| AU2012277331A1 (en) | 2014-01-30 |
| EP2727214A1 (en) | 2014-05-07 |
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