Distributed power supply and lamp assembly

Abstract

The utility model relates to a distributed power supply, comprising an electronic ballast, the input end of which is connected with commercial power and is used for converting the commercial power into high frequency square wave output; the input ends of the processing assemblies are connected with the output end of the electronic ballast, the output ends of the processing assemblies are connected with at least one lamp, and the processing assemblies are used for processing the high-frequency square waves output by the electronic ballast and then supplying power to the lamp; and the processing assembly comprises an isolation conversion module for changing voltage amplitude, a bridge rectifier module for converting high-frequency square waves into pulsating direct-current voltage and a voltage filtering module for filtering the pulsating direct-current voltage into direct-current voltage, which are connected in sequence. Through the arrangement of one electronic ballast, a plurality of processing assemblies and lamps, a small number of electric appliance elements can provide constant current for a plurality of lamps, and the use cost of the lamps is reduced.

Description

Technical Field

[0001] The utility model relates to the field of power supplies, and particularly to a power supply for a plant lighting LED lamp. Background Art

[0002] An LED is a current-driven semiconductor device, and its brightness and color are greatly affected by current. The brightness of an LED is directly proportional to the current passing through it. If the current fluctuates, the brightness of the LED will also change accordingly. In addition, the color of the LED is also affected by current. Therefore, an LED lamp must be driven by a constant current source. When using an LED lamp for plant lighting, the light intensity required for plant lighting is large, and the power of the lamp is required to be large to provide sufficient light intensity. Therefore, LED lamps are formed by connecting multiple LED bulbs in series and parallel. Limited by the safety voltage, they usually work in multiple groups. And working in multiple groups means that each group requires a constant current source driving power supply. Summary of the Utility Model

[0003] Based on this, it is necessary to provide a low-cost distributed power supply for the above technical problems.

[0004] A distributed power supply includes:

[0005] An electronic ballast, the input end of the electronic ballast is connected to the commercial power, and is used to change the commercial power into a high-frequency square wave for output.

[0006] Multiple groups of processing components connected in parallel with each other, the input end of the processing component is connected to the output end of the electronic rectifier, and the output end of the processing component is connected to at least one lamp, and is used to process the high-frequency square wave output by the electronic ballast and supply power to the lamp; the processing component includes an isolation transformation module for changing the voltage amplitude, a bridge rectification module for changing the high-frequency square wave into a pulsating DC voltage, and a voltage filtering module for filtering the pulsating DC voltage into a DC voltage, which are connected in sequence.

[0007] In some embodiments, the processing component further includes an anti-interference module for suppressing the common-mode voltage, and the anti-interference module is arranged between the voltage filtering module and the lamp.

[0008] In some embodiments, the anti-interference module includes a choke coil and a Y capacitor.

[0009] In some embodiments, the isolation transformation module includes a capacitor for isolating the DC component and a transformer for changing the voltage amplitude.

[0010] In some embodiments, the bridge rectification module includes a single-phase bridge rectification circuit.

[0011] In some embodiments, the voltage filtering module includes a capacitor.

[0012] In some embodiments, the lighting fixture includes an LED lighting fixture.

[0013] A lighting fixture assembly includes the distributed power supply as described above and a lighting fixture connected to the distributed power supply.

[0014] For the above-mentioned distributed power supply and lighting fixture assembly, by using one electronic ballast, multiple processing components and the setting of the lighting fixtures, when the current of a certain lighting fixture changes, since the current in the output loop of the ballast remains unchanged, the input voltage of the isolation transformation part drops, the power obtained by this lighting fixture decreases, and the increase in the current of this lighting fixture is suppressed. The constant current characteristic is achieved, so that multiple processing components can provide constant current for multiple lighting fixtures, reducing the usage cost of multiple lighting fixtures. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the architecture of the distributed power supply in one embodiment.

[0016] Figure 2 It is a circuit diagram of a group of processing components in one embodiment. Detailed Description of the Invention

[0017] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] As Figure 1 shown, the present invention provides a distributed power supply, including:

[0019] An electronic ballast, the input end of the electronic ballast is connected to the mains power, and is used to convert the mains power into a high-frequency square wave for output.

[0020] Multiple groups of processing components connected in parallel with each other, the input end of the processing components is connected to the output end of the electronic rectifier, and the output end of the processing components is connected to at least one lighting fixture, and is used to process the high-frequency square wave output by the electronic ballast and supply power to the lighting fixture; the processing components include an isolation transformation module for changing the voltage amplitude, a bridge rectification module for converting the high-frequency square wave into a pulsating DC voltage, and a voltage filtering module for filtering the pulsating DC voltage into a DC voltage, which are connected in sequence.

[0021] When using the above distributed power supply, when the current of a certain lighting fixture increases, since the current in the output loop of the ballast remains unchanged, the input voltage of the isolation transformation part drops, the power obtained by this lighting fixture decreases, and the increase in the current of this lighting fixture is suppressed, achieving the constant current characteristic, and a constant current power supply can be provided for multiple lighting fixtures. Only one electronic ballast and a small number of electrical components are needed to supply power to multiple lighting fixtures, reducing the electrical cost.

[0022] Figure 2 It is the circuit diagram of a set of processing components in an embodiment.

[0023] In one embodiment, the processing component further includes an anti-interference module for suppressing the common-mode voltage. The anti-interference module is arranged between the voltage filtering module and the lamp. In one embodiment, the anti-interference module includes a choke coil L1, Y capacitors CY1 and CY2. The setting of the anti-interference module can prevent the voltage impact of the pre-stage common-mode voltage on the lamp, thereby causing damage to the LED lamp group.

[0024] In one embodiment, the isolation transformation module includes a capacitor C1 for isolating the DC component and a transformer T1 for changing the voltage amplitude. The isolation transformation module can convert the high-frequency square wave output by the electronic ballast into a high-frequency AC square wave voltage matching the lamp voltage. By designing the transformation ratio of the transformer T1, it can adapt to the rated voltages of different LED lamp groups and maintain the stability of power.

[0025] In one embodiment, the bridge rectification module includes a single-phase bridge rectification circuit. Four diodes D1, D2, D3, and D4 form a single-phase bridge rectification circuit to shape the high-frequency square wave signal transformed by the transformer T1 into a pulsating DC voltage.

[0026] In one embodiment, the voltage filtering module includes a capacitor E1 for filtering the pulsating DC voltage into a stable DC voltage.

[0027] In one embodiment, the lamp includes an LED lamp. The LED lamp connected to a set of processing components can be one or more.

[0028] A lamp assembly includes the distributed power supply as described above and a lamp connected to the distributed power supply.

[0029] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0030] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be understood as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A distributed power source, characterized in that: include: An electronic ballast, the input end of which is connected to the mains power supply and is used to convert the mains power supply into a high-frequency square wave output; A plurality of processing components are connected in parallel, wherein the input end of the processing component is connected to the output end of the electronic ballast, and the output end of the processing component is connected to at least one lamp, and is used to power the lamp after processing the high-frequency square wave output by the electronic ballast; the processing component includes an isolation conversion module for changing the voltage amplitude, a bridge rectifier module for converting the high-frequency square wave into a pulsating DC voltage, and a voltage filtering module for filtering the pulsating DC voltage into a DC voltage, which are connected in sequence.

2. The distributed power supply according to claim 1, characterized in that: The processing component further includes an anti-interference module for suppressing common mode voltage, and the anti-interference module is arranged between the voltage filtering module and the lamp.

3. The distributed power source according to claim 2, characterized in that: The anti-interference module includes a choke coil and a Y capacitor.

4. The distributed power supply according to claim 1, characterized in that: The isolation conversion module includes a capacitor for isolating a DC component and a transformer for changing a voltage amplitude.

5. The distributed power source according to claim 1, characterized in that: The bridge rectifier module includes a single-phase bridge rectifier circuit.

6. The distributed power source according to claim 1, characterized in that: The voltage filtering module includes a capacitor.

7. The distributed power source according to claim 1, characterized in that: The lamp comprises an LED lamp.

8. A lamp assembly, comprising a distributed power supply as claimed in any one of claims 1 to 7 and a lamp connected to the distributed power supply.

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