CN201339900Y - Energy-saving high-efficiency LED AC/DC lighting lamps - Google Patents

Abstract

The utility model discloses an energy-saving and high-efficiency LED AC-DC lighting lamp. The AC-DC lighting lamp adopts the method of LED series loading or multi-series parallel loading. The mode of comprehensive expansion of the load circuit; the AC lamp adopts resistance-capacity current limiting, decompression, rectification and filtering, and AC-DC valley compensation power supply to cooperate with the main power supply to control load, double rectification or constant voltage or load control constant voltage, frequency valley compensation The device is connected with various adjustable series LEDs to form a step-down lamp, a constant current control lamp, and a constant current lamp. The utility model overcomes the disadvantages of low voltage utilization rate of low voltage and high current parallel loading, low module load power and many controls, and has simple circuit and high light efficiency.

Description

Energy-saving and high-efficiency LED AC and DC lighting

technical field

The utility model relates to a lighting lamp, in particular to an energy-saving and high-efficiency LED AC and DC lighting lamp.

Background technique

Super bright LED will enter the lighting era as a new type of light source. At present, LED lighting applications are mostly in the form of low-voltage directional parallel loading or low-power module supply. The former requires a larger power control circuit or power module for voltage-limited power supply, which has step-down heat loss, low efficiency, and is uneconomical. The latter has The voltage utilization rate is low, the power is small, and there are many peripheral control parts, it is difficult to achieve the lighting effect, and the promotion has limitations.

Ultra-bright LED has high luminous efficiency and energy saving. It is also a delicate semiconductor device that needs to be improved in overload, heat resistance and aging resistance. It has strict requirements on the power supply. DC power supply is similar to DC power supply, while AC-DC DC power is a DC power source converted from 50HZ frequency cycle. Because there is no voltage output at the valley point of each cycle, it has no delay, and the voltage drop sometimes reaches ±10 due to the load of the external power grid. %, the stability is poor, and people prolong the DC supply time in the cycle by increasing the charging of the DC filter capacitor, but the problem of delayed load supply has not been fundamentally solved.

Contents of the invention

The purpose of the utility model is to provide energy-saving and high-efficiency LED AC and DC lighting lamps, overcome the disadvantages of low utilization rate of low-voltage and high-current load voltage, low module load power and many controls, simple circuit and high light efficiency.

The technical solution of the utility model is: the AC and DC lighting lamps are LED serial load or multi-string parallel load mode, and the DC lamp adopts current limiting, common voltage IC voltage stabilization, transistor voltage stabilization, and transistor constant current to form an adjustable load circuit comprehensive expansion AC lamp adopts resistance-capacity current limiting, decompression, rectification filter and AC-DC valley compensation power supply, compound filter, voltage stabilization, constant voltage, load control constant voltage, and frequency valley compensator to connect various series loads. The adjustable form of LED forms a step-down lamp, a current-controlled lamp, and a constant-current lamp.

The specific structure of the energy-saving and high-efficiency LED AC/DC lighting lamp of the present utility model is as follows: 1-90 LEDs are serially loaded or multi-string groups are connected and welded on the light-emitting board, and the control circuit is connected to the light-emitting circuit and assembled on the outer cover or the light-concentrating outer cover. It becomes the overall lighting, backlight or lighting fixture; that is, it is composed of AC or DC power supply, voltage reducer, pressure reducer, current limiter, rectifier, AC-DC valley compensation power supply, AC filter, DC filter, DC compound The whole filter, voltage stabilizer or constant voltage regulator or load control constant voltage regulator, frequency valley compensator, base stable potential limiter, constant current device and optical load connection form an electrical circuit; the DC lamp is a current limiting lamp, conventional Voltage IC voltage regulator lamps, transistor voltage regulator lamps or transistor constant current load lamps; AC lamps are basic or typical step-down lamps, transistor current control lamps or transistor constant current lamps.

The utility model has the following advantages: 1. The DC lamp adopts a constant voltage and constant current control mode to ensure a constant current and prolong the service life. 2. The power supply part of the AC lamp control circuit adopts an AC-DC valley compensation power supply to cooperate with the main power supply to control the load. The combination of compound filter, frequency valley compensator and ordinary rectifier circuit is suitable for various AC-DC conversion loads below 300 volts, and does not require inductance filtering. The voltage output waveform is better and the conversion efficiency is high. Suitable for LED light load power supply and working power supply of various non-isolated electronic circuits; 3. The current control and constant current part of the AC lamp control circuit adopts the load and light load voltage feed-control method, the flow control process is intuitive, the components are few, and the current Small, it has anti-aging effect on LED, and has no resonance, is compatible with EMI, has no vibration and magnetic radiation, supports PWM dimming, and the circuit setting can be controlled by voltage and load, depending on the application, energy-saving and efficient; 4. AC- The DC valley compensation power supply can effectively overcome the disadvantages of no-voltage load supply at the valley point within the cycle, that is, to shift the phase of the electric energy in the "energy storage" that is filled in the load supply area and second only to the load supply area to the valley point in each cycle. The voltage area is released to the load, and a second peak voltage supply area similar to the second peak voltage supply area is created. Then the process of the original power supply in the valley voltage area in the cycle evolves into the process of the valley supplementary power supply discharging and supplying the load. Compensate the superimposed waveform, so that the DC output is The period is in the working state of peak voltage power supply area plus "peak voltage compensation power supply area", which makes the AC-DC conversion and supply load have a slow-speed property, and overcomes the occurrence of various AC-DC DC electrical loads due to periodic valley voltage. 5. If you use an oscilloscope to observe the filtered DC wave pattern at the power output end of an ordinary rectifier, you can find that The output contains a certain amount of AC components and external clutter, and the LED optical load needs a relatively pure DC power supply. In order to overcome the above disadvantages, a compound or multi-rectifier filter is used to prevent the passage of AC clutter, which can approach the filtering of general inductance. As a result, there is no need to double the filter capacitor, and the DC output waveform can be greatly improved. Due to the small number of components, it is easy to manufacture, and it is also suitable for any similar AC-DC power supply equipment; 6. The frequency valley compensator is mainly used in Compensate the potential of the control part in the valley period, and release the electric energy in the "accumulator" that is full of electric energy in the load supply area of each cycle to the valley voltage area to ensure or maintain the instantaneous moment in the low valley voltage area. This kind of control circuit normally works from the power supply to the load, especially the light load, so that the working voltage in the low valley area can be fully used to overcome or reduce the occurrence of the frequency off phenomenon of the load, which constitutes the valley voltage of the load during the AC-DC conversion process The working process of continuous pressure or uninterrupted realization of soft transition.

Description of drawings

Figure 1 is a schematic diagram of the LED DC lighting circuit principle.

Figure 2-1 is a schematic diagram of an AC-DC valley compensation power supply for an AC lighting lamp, Figure 2-1 is a schematic waveform of Figure 2, and Figure 2-2 is an application schematic diagram of Figure 2.

Figure 3 is a schematic diagram of the principle of the compound filter.

Figure 4 is a schematic diagram of the principle of the frequency valley compensator, and Figure 4-1 is a schematic diagram of the application of Figure 4.

Fig. 5 is a schematic diagram of the principle of LED AC step-down series lights.

Fig. 6 is a schematic diagram of the principle of LED AC current-controlled series lights.

Fig. 7 is a schematic diagram of the principle of LED AC constant current series lights.

Detailed ways

The AC and DC lighting lamps are LED series or multi-series parallel load mode. The DC lamp adopts current limiting, common voltage IC voltage stabilization, transistor voltage stabilization, and transistor constant current to form a comprehensive expansion mode of adjustable load circuit; flow, decompression, rectification and filtering, and AC-DC valley compensation power supply, double rectification, voltage stabilization, constant voltage, load control constant voltage, and frequency valley compensator are connected to various series-loaded adjustable LEDs to form a step-down lamp, control Current lamp, constant current lamp.

The specific structure of the energy-saving and high-efficiency LED AC/DC lighting lamp of the present utility model is as follows: 1-90 LEDs are serially loaded or multi-string groups are connected and welded on the light-emitting board, and the control circuit is connected to the light-emitting circuit and assembled on the outer cover or the light-concentrating outer cover. It becomes the overall lighting, backlight or lighting fixture; that is, it is composed of AC or DC power supply, voltage reducer, pressure reducer, current limiter, rectifier, AC-DC valley compensation power supply, AC filter, DC filter, DC compound The whole filter, voltage stabilizer or constant voltage regulator or load control constant voltage regulator, frequency valley compensator, base stable potential limiter, constant current device and optical load connection form an electrical circuit; the DC lamp is a current limiting lamp, conventional Voltage IC voltage regulator lamps, transistor voltage regulator lamps, transistor constant current load lamps; AC lamps are basic or typical step-down lamps, transistor current-controlled lamps, and transistor constant-current lamps.

DC lamp: see Figure 1, the light load is LED1-18 series load or multi-string group parallel load; K1 resistor current limiting load adjustment lamp, suitable for lamps, torches, emergency lights, light indicators, long-range lights; K2 conventional voltage IC stable Voltage load adjustment lamps, suitable for lamps, flashlights, emergency lights, light indications, and long-range spotlights; K3 crystal voltage regulator lamps, K4 transistor constant current lamps; K3, K4 are suitable for lighting lamps: flashlights, miner's lamps, emergency charging and storage lamps, Long-distance spotlights, vehicle and ship lighting and lighting systems, field indoor emergency lighting, other lighting, light energy, wind energy AC-DC lighting, roads, shooting, flower scenes, advertisements, light indications, and light control lights as light sources.

AC lamp power supply part: Aiming at the AC power frequency property, the method of resistance-capacity current limiting and decompression is adopted, and AC-DC valley compensation power supply, double rectification filter, frequency valley compensation, voltage stabilization or constant voltage or load control are used to stabilize constant voltage and rectify , filtering, voltage stabilizing potential, current limiting potential, current controlling potential, and reference potential are combined to achieve load characteristics similar to slow-speed direct current, which meets the requirements of LED optical load characteristics for power supplies; AC-DC valley compensation power supply is shown in the figure 2. One path of the power circuit consists of a DC pulsation power supply at the initial rectification end, an energy storage device, and a power push output filter connection. The other route of the power circuit is composed of DC pulsation signal attenuation, frequency detection control potential, valley-opening peak-off follower, and power push output power supply And merge the common output of the main power supply to the control load output part to connect; Figure 2-1 is a schematic diagram of the waveform of the power supply per cycle per unit time of the valley compensation power supply, in the figure A is the AC positive arc wave waveform, and B is the rectified DC pulsation waveform diagram, C is the superimposed waveform diagram of the compensation output of the valley-compensated power supply and the output of the original power supply, D is the schematic diagram of the delay angle labeling of AC and DC operation in each period; the virtual frame in Figure 2-2 is the valley-compensated power supply Application schematic diagram; as shown in Figure 2-1, at 0 degrees, 180 degrees, and 360 degrees are the valley voltage points, almost no voltage output, and at 90 degrees and 270 degrees are the peak voltage points, here 0-45 degrees, 135-225 degrees Degrees, 315-360 degrees are valley pressure areas, and the rest are peak voltage supply areas. Here, the circuit in the figure will provide "valley-on" forward voltage to the power by the "electronic switch" valley-opening peak-off follower according to the frequency detection signal The output makes it turn on, and the electric energy fully charged in the peak voltage power supply area in the "energy storage" is phase-shifted and released to the valley voltage area, compensating the phenomenon of no voltage output at the valley point, and forming AC-DC conversion in each cycle. The process of adding a high-voltage power supply area to a similar peak-voltage power supply area to compensate for the load supply; the compound filter is shown in the dotted line box in Figure 3, which is composed of 220V, rectification, filtering, dotted line box double rectification, DC output and connection to the load control part; the solid line is usually The conversion method of AC-DC power supply, in order to overcome and hinder the AC miscellaneous filtering after rectification and filtering, the repeated or multi-repetition rectification and filtering shown in the dashed box can be close to the effect of general inductance filtering, and the quality of its output waveform can be improved. The valley-step pulse width compensator is shown in Figure 4. It is composed of a power supply of 220V, rectification, and DC pulse signal attenuation. Partial connections; Figure 4-1 is a schematic diagram of the application of the frequency valley compensator, and the dotted line box shows the connection between the frequency valley compensator and the overall circuit. And the control voltage is lower or even no voltage, causing the load to cut off the power instantaneously) Various control circuits have no voltage, maintain the overall smooth connection with the load when the power supply is low output, and avoid or reduce the frequency off phenomenon.

AC lights: use resistance-capacity current limiting, decompression, rectification and filtering and AC-DC valley compensation power supply, double rectification and filtering, frequency valley compensator for voltage stabilization or constant voltage or load control for constant voltage, voltage stabilization potential, current control potential, The optical load feed-amplification, power push output and various optical load combinations are connected to each other to form an electrical circuit, which is an LED step-down lamp, a current-controlled lamp, and a constant-current lamp.

Step-down lamps are shown in Figure 5, and there are five types of optical load connections: ① direct load, ② forward single-series load, ③ series load and stable series, ④ stabilized voltage or series load or multiple strings in parallel, ⑤ series load or multiple strings Series and parallel loading; K1 is a self-rectification circuit, K2 is a rectification RC filter circuit, and K3 is a rectification filter circuit, which is composed of 220V power supply, resistance or capacity matching, full-bridge rectification or half-rectification, RC filter, DC filter, current limiting potential adjustment and K1, K2, and K3 are connected to the optical load ①-⑤ to be grounded to form an electrical circuit; in order to improve power efficiency and optical load quality, K2 and K3 are mainly full-bridge rectifiers, and the typical application of the ③④ load type of the K3 circuit is especially recommended, suitable for lamps. Scenery lights, cursor lights, backlights, or lighting K1 is a self-rectifying type for basic applications, and is connected to an electrical circuit by 220V, resistance or capacity matching, RC filter limit adjustment, K1, optical load, and 220V neutral wire; K2 is for basic applications The whole filter type is composed of 220V, matching capacity or resistance matching, full-bridge or half-bridge rectification RC filter, current limiting potential adjustment, K2, and optical load connection to form an electrical circuit; K3 is a typical application of the whole filter type, which is composed of 220V, matching capacity or Resistance distribution, full bridge or half rectification, RC filter, DC filter, current limiting potential adjustment, K3, light load connection to form an electrical circuit; 2-90 LEDs are connected in series, and 40-90 LEDs are used in series or multi-series in parallel for conventional applications load, the input voltage is 215-240V, and the current of each string load group is adjusted at 10-12mA when the current is 220V, and the working voltage of a single LED is 2.8-2.9V.

As shown in Figure 6, the current control lamp is equal-voltage capacitor or full-voltage resistor, and the light-load connection is LED 10-90 in series or multiple strings in parallel, stabilized in series or multiple strings in parallel; full bridge is used Mainly rectification, K6 current control lamp is composed of 220V, matching capacity or resistance, rectification or half rectification, RC current limiting filter, DC filter, current limiting, frequency valley compensator, stable control potential, potential adjustment, power push output, main Power supply, K6, power push output, and optical load are connected to form an electrical circuit; K7 load-feed control current lamp is regulated by 220V, matching capacity or resistance, rectification or semi-rectification, RC current limiting filter, DC filter, frequency valley compensator or Constant voltage, stable control potential, load voltage sampling, amplification and promotion, power output, main power supply, K7, power output, and optical load are connected to form an electrical circuit; the adaptable voltage is 170-250V, and the current of K6 is adjusted at 10-12.5 mA at 220V. K7 adopts optical load feed voltage control current, adjusts it at 12.5-14 mA at 220V, and the current control accuracy at room temperature is ±3.5%. It is suitable for landscape lights, backlights, backlights or lighting.

The constant current lamp is shown in Figure 7. The optical load is connected in series or in parallel. The working power supply is composed of 220V, matching capacity or resistance, rectification, RC filter, DC filter, double rectification, rectification, and AC-DC valley compensation power supply. , compound rectification and constant voltage limit control connection; K8 optical load feed voltage self-control circuit consists of working power supply, base stability limit control potential, constant push output, base stability limit control potential, current control, base stability potential, feed voltage sampling, Current control, constant push output, light load, line stable clamp, K8 grounding; K9 light load differential pressure self-control circuit consists of working power supply, base stable limit control potential, constant current push, power output, base stable potential, comparison, Constant current drive, power output, No. 1 differential pressure sampling, K9, optical load, line stability clamp, and No. 2 differential pressure sampling grounding; main parameters of constant current lamp: its optical load LED 2-90 serial load or multiple strings Parallel load, suitable for input voltage 175-250V, current 12-14 mA; normal application input voltage 205V-250V, LED optical load 60-88 series load group, single LED working voltage 2.8-3.1V, single string group The working current is adjusted at 12.5-16.5mA, and the accuracy error of constant current at room temperature is less than 4.5%, which is suitable for various lighting fixtures.

Claims (10)

1. efficient energy-saving LED alternating current-direct current illuminating lamp is characterized in that: the alternating current-direct current illuminating lamp is that the LED string carries or goes here and there more and the mode of carrying, and the direct current lamp adopts current limliting, common voltage IC voltage stabilizing, transistor stabilized, pattern that constant-current transistor constitutes the comprehensive expansion in adjustable live road; AC Lamp adopt capacitance-resistance current limliting, decompression, rectifying and wave-filtering to mend power supply, compound whole filter, voltage stabilizing or constant voltage with AC-DC paddy or carry the permanent voltage stabilizing of control, the paddy compensator is connected all kinds of adjustable strings and carries LED and form step-down lamp, control stream perseverance, constant current lamp frequently.

2. efficient energy-saving LED alternating current-direct current illuminating lamp according to claim 1, it is characterized in that concrete structure is: carried or many strings group and carry to connect and be welded on luminous plaque by 1-90 LED string, control circuit connects illuminating circuit and is assembled in and becomes integral illumination lamp, backlight or illumination light fixture in outer cover or the optically focused outer cover; Promptly by exchange or dc source input, reducing transformer, pressure reducer, current limiter, rectifier, AC-DC paddy mend power supply, alternating current filter, DC filter, the compound whole filter of direct current, voltage-stablizer or barostat or carry the permanent voltage-stablizer of control, paddy compensator, the steady current potential limit of base control device, galvanostat and light carry and connect to form electric loop frequently; The direct current lamp is that current limliting transfers a year lamp, conventional voltage IC voltage stabilizing to transfer a year lamp, transistor stabilized accent to carry lamp or the constant-current transistor accent carries lamp; AC Lamp is basic or typical step-down lamp, crystal management and control stream lamp or constant-current transistor lamp.

3. efficient energy-saving LED alternating current-direct current illuminating lamp according to claim 2 is characterized in that: direct current light carries to LED1-18 string and carries or many strings group and carrying; K1 resistance current limliting transfers the LED1-18 string that carries lamp to carry; The conventional voltage IC of K2 voltage stabilizing transfers the LED2-18 string that carries lamp to carry or many strings group and carrying; The LED1-18 string that lamp transfer is carried in the voltage stabilizing of K3 crystal carries or many strings group and carrying; The LED1-18 of K4 constant-current transistor lamp string carries or many strings group and carrying.

4. efficient energy-saving LED alternating current-direct current illuminating lamp according to claim 2 is characterized in that: AC Lamp adopt capacitance-resistance current limliting, decompression, rectifying and wave-filtering to mend power supply, compound rectifying and wave-filtering, paddy compensator voltage stabilizing frequently or constant voltage with AC-DC paddy or carry that permanent steady, the voltage stabilizing current potential of control, control stream current potential, light carry that the feedback taking and placing are big, merit pushes away output and carries to make up with multiple light and be interconnected to form the loop.

5. efficient energy-saving LED alternating current-direct current illuminating lamp according to claim 4 is characterized in that: step-down light carries and connects 5 kinds: 1. toward carrying, 2. carry toward the single string of formula, 3. string carry and string steady, 4. voltage stabilizing or string carry or many strings group and carrying, 5. string carries or goes here and there more and carries; K1 is the self-rectifying loop, K2 rectification RC filter circuit, K3 is a rectification filtering circuit, by power supply 220V, join resistance or complexion, full-bridge rectification or half rectification, RC filtering, DC filtering, the adjusting of current limliting current potential and K1, K2, K3 and be connected to light and carry 1.-and 5. ground connection forms electric loop; K1 is the basic self-rectifying formula of using, by 220V, join that resistance or complexion, RC filtering limit accent, K1, light carry, the 220V zero line connects into electric loop; K2 is the basic whole filter formula of using, by 220V, complexion or join resistance, full-bridge or half-bridge rectification RC filtering, the adjusting of current limliting current potential, K2, light carries and connects into electric loop; K3 is that the typical case uses whole filter formula, by 220V, complexion or join resistance, full-bridge or half rectification, RC filtering, DC filtering, the adjusting of current limliting current potential, K3, light carries and connects into electric loop.

6. efficient energy-saving LED alternating current-direct current illuminating lamp according to claim 4 is characterized in that: control stream lamp is electric capacity equipressure or resistance total head class, and its light carries and is connected to that string carries or goes here and there more and carries, voltage stabilizing and string carry or go here and there more and carry; By 220V, complexion or join resistance, rectification or half rectification, the filtering of RC current limliting, DC filtering, current limliting, frequently the paddy compensator, surely control that current potential, current potential are regulated, merit pushes away output, main power source, K6, merit push away output, light carries and connects into electric loop; By 220V, complexion or join resistance, rectification or half rectification, the filtering of RC current limliting, DC filtering, paddy compensator voltage stabilizing frequently or constant voltage, surely control current potential, carry press sampling, amplify promotions, power output, main power source, K7, power are exported, light carries and connects into electric loop.

7. efficient energy-saving LED alternating current-direct current illuminating lamp according to claim 4, it is characterized in that: constant current light carries and is connected to string and carries or go here and there more and carry, and the working power part is by 220V, complexion or join resistance, rectification, RC filtering, DC filtering, compound whole filter, rectification, AC-DC paddy and mend power supply, compound whole filter and the control of voltage stabilizing limit and connect to form; K8 light carry feed voltage autocontrol loop by working power, the steady limit control of base current potential, perseverance push away that output, the steady limit control of base current potential, control stream, the steady current potential of base, feed voltage sampling, control are flowed, perseverance pushes away output, light carries, the steady clamp of line, K8 ground connection constitute; K9 light set differential pressure autocontrol loop by working power, the steady limit control of base current potential, constant current promotion, power output, the steady current potential of base, comparison, constant current promotion, power output, differential pressure sampling, K9, a light carry, the steady clamp of line, No. two differential pressure sampling ground connection constitute.

8. efficient energy-saving LED alternating current-direct current illuminating lamp according to claim 4, it is characterized in that: dc pulse power supply, accumulator, the merit of one tunnel initial rectifier terminal of the power supply of paddy benefit power supply push away output and connect to form, and another route dc pulse signal decay of power circuit, frequency prosecution system current potential, Gu Kaifeng close follower, merit pushes away out-put supply cooperation main power source to a control year part and connects to form.

9. efficient energy-saving LED alternating current-direct current illuminating lamp according to claim 4 is characterized in that: multiple rectifier exports a control year part to by 220V, rectification, filtering, the compound rectification of frame of broken lines, direct current and connects to form.

10. efficient energy-saving LED alternating current-direct current illuminating lamp according to claim 4, it is characterized in that: frequently the paddy compensator is by power supply 220V, rectification, dc pulse signal decay, and accumulator, paddy leave follower and working power, accumulator, paddy and drives follower and export control to and carry partly and connect to form.

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