# US 11,895,955 B2 · Combined LED lighting system for plant growth

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- Number: US 11,895,955 B2
- Document ID: US11895955B2
- Status: Granted
- Kind: B2
- Application number: 17/152,018
- Filed: 2021-01-19
- Published: 2021-07-15
- Granted: 2024-02-13
- Earliest claimed: 2020-01-15
- Assignees: Shenzhen Number Energy Saving Corporation
- Applicants: Shenzhen Number Energy Saving Corporation
- Inventors: Hongchuan Chen; Yuan Yang; Jiaqin Li; Bing Ma
- Web page: https://patentgrep.com/patent/US11895955B2

## CPC

- F21V 21/116: Fixing lighting devices to arms or standards (F21V21/002 takes precedence)
- H05B 47/185: via power line carrier transmission
- A01G 7/045: {with electric lighting}
- A01G 9/249: {Lighting means (with special arrangements for promoting growth A01G7/045)}
- F21S 2/005: {of modular construction}
- F21S 8/043: {mounted by means of a rigid support, e.g. bracket or arm}
- H05B 45/10: Controlling the intensity of the light
- H05B 45/20: Controlling the colour of the light
- H05B 45/325: Pulse-width modulation [PWM]
- H05B 45/345: Current stabilisation; Maintaining constant current
- H05B 45/355: Power factor correction [PFC]; Reactive power compensation
- H05B 45/39: Circuits containing inverter bridges
- F21V 23/06: the elements being coupling devices {, e.g. connectors}
- F21Y 2115/10: Light-emitting diodes [LED]
- H05B 45/30: Driver circuits
- Y02B 20/30: Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
- Y02P 60/14: Measures for saving energy, e.g. in green houses
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- A01G: HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING (picking of fruits, vegetables, hops or the like A01D46/00; propagating unicellular algae C12N1/12)
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

Disclosed is a combined LED grow lighting system, comprising an LED light track and at least one LED light strip which slidably connects with and longitudinally slides along the LED light track; wherein a remote control signal receiver to receive a remote control signal is configured within the LED light track, a processing device for processing the remote control signal received by the remote control signal receiver to generate a control signal for controlling a power of LED in each LED light strip is connected with each LED light strip, respectively; an LED constant current power supply and a constant current control circuit are configured within the LED light strip, and the constant current control circuit is connected with the processing device and receives the control signal regarding the power of the LED light strip sent from the processing device to control the LED constant current power supply.

## Claims

### Claim 1

A combined LED lighting system for plant growth, comprising an LED light track and at least one LED light strip which slidably connects with and longitudinally slides along the LED light track;
wherein:
a remote control signal receiver to receive a remote control signal is configured within the LED light track,
a processing device for processing the remote control signal received by the remote control signal receiver to generate a control signal for controlling a power of LED in each LED light strip is connected with each LED light strip, respectively;
an LED constant current power supply and a constant current control circuit are configured within the LED light strip, and
the constant current control circuit is connected with the processing device and receives the control signal regarding the power of the LED light strip sent from the processing device to control the LED constant current power supply;
wherein in the processing device, the control signal for controlling the power of the LED light strip in the remote control signal is converted into a PWM signal and sent to the constant current control circuit, and a duty ratio of the PWM signal is a percentage of a controlled maximum power of the LED light strip;
wherein the LED constant current power supply comprises an EMI filter and rectifier circuit, a critical conduction mode power factor correction (CRMPFC) circuit, an LLC half-bridge resonant circuit and an output rectifier and filter circuit,
a commercial power is filtered and rectified by the EMI filter and rectifier circuit and enters the CRMPFC circuit to form a high-voltage DC electrical signal, which enters the LLC half-bridge resonant circuit,
a switch of the LLC half-bridge resonant circuit is controlled by the PWM signal received by the constant current control circuit, and
a resonant signal output by the LLC half-bridge resonant circuit is rectified and filtered by the output rectifier and filter circuit and connected with an LED; and
wherein the combined LED lighting system for plant growth further comprises a negative feedback circuit, wherein the negative feedback circuit comprises an LED constant current sampling circuit, of which an output is connected with the constant current control circuit, and the constant current control circuit adjusts the PWM signal according to the output of the LED constant current sampling circuit.

### Claim 2 (depends on 1)

The combined LED lighting system for plant growth of claim 1, wherein the LLC half-bridge resonant circuit has two resonant frequencies, of which one is 45 kHz and the other is 120 kHz, and a working frequency is configured between the two resonant frequencies.

### Claim 3 (depends on 1)

The combined LED lighting system for plant growth of claim 1, wherein a connecting structure of the LED light strip which slidably connects with and longitudinally slides along the LED light track comprises a buckle connecting the LED light track with the LED light strip,
wherein the buckle comprises a hook plate, a pressing plate and a hanging plate, one end of the hook plate is configured with a hook, another end of the hook plate is configured with a hook plate connecting ear having an installation hole, one end of the pressing plate is configured with a pressing plate connecting ear, and a hook plate connecting hole and a hanging plate connecting hole are configured in parallel on the pressing plate connecting ear, one end of the hanging plate is configured with a hanging piece which is perpendicular to a main body, another end of the hanging plate is configured with a hanging plate connecting ear having an installation hole, the hook of the hook plate is arranged in a same direction with the hanging piece of the pressing plate, the pressing plate connecting ear is connected with axle holes of the hook plate connecting ear and the hanging plate connecting ear, respectively, forming a structure, in which the hook plate rotates around the pressing plate, and the pressing plate drives the hook plate to rotate around the hanging plate, a surface of the LED light track is configured with a convex ridge corresponding the hook of the hook plate, a surface of the light strip is configured with a slot corresponding the hanging piece of the hanging plate, one end of the buckle is hooked with the convex ridge of the LED light track via the hook, and another end of the buckle is plugged in the slot of the LED light strip via the hanging piece.

### Claim 4 (depends on 3)

The combined LED lighting system for plant growth of claim 3, wherein a spacing of the pressing plate connecting ear is greater than a spacing of the hook plate connecting ear, and a spacing of the hanging plate connecting ear is greater than a spacing of the pressing plate connecting ear.

### Claim 5 (depends on 3)

The combined LED lighting system for plant growth of claim 3, wherein another end of the pressing plate is configured with a bent hand pressing part.

### Claim 6

A combined LED lighting system for plant growth, comprising an LED light track and at least two LED light strips which slidably connect with and longitudinally slide along the LED light track, wherein the LED light track comprises:
a remote control signal receiver for receiving a remote control signal;
a processing device for processing the remote control signal received by the remote control signal receiver to generate a control signal for controlling powers of the LED light strips is connected with each of the LED light strips, respectively;
an LED constant current power supply and a constant current control circuit are configured within each of the LED light strips, and
the constant current control circuit is connected with the processing device and receives the control signal regarding the power of each of the LED light strips sent from the processing device to control the LED constant current power supply;
wherein the processing device converts the control signal for controlling the powers of the LED light strips in the remote control signal into a PWM signal and sends the PWM signal to the constant current control circuit, and a duty ratio of the PWM signal is a percentage of a controlled maximum power of the LED light strips; and
wherein the LED constant current power supply further comprises a negative feedback circuit, wherein the negative feedback circuit comprises an LED constant current sampling circuit, of which an output is connected with the constant current control circuit, and the constant current control circuit adjusts the PWM signal according to the output of the LED constant current sampling circuit.

### Claim 7 (depends on 6)

The combined LED lighting system for plant growth of claim 6, wherein the LED light strips have at least two different spectra.

### Claim 8 (depends on 6)

The combined LED lighting system for plant growth of claim 6, wherein the LED track is detachably connected with the LED strips by a buckle.

### Claim 9 (depends on 6)

The combined LED lighting system for plant growth of claim 6, wherein the LED strips can be freely combined.

### Claim 10 (depends on 6)

The combined LED lighting system for plant growth of claim 6, wherein
the LED constant current power supply comprises an EMI filter and rectifier circuit, a critical conduction mode power factor correction (CRMPFC) circuit, an LLC half-bridge resonant circuit and an output rectifier and filter circuit,
a commercial power is filtered and rectified by the EMI filter and rectifier circuit and enters the CRMPFC circuit to form a high-voltage DC electrical signal, which enters the LLC half-bridge resonant circuit,
a switch of the LLC half-bridge resonant circuit is controlled by the PWM signal received by the constant current control circuit, and
a resonant signal output by the LLC half-bridge resonant circuit is rectified and filtered by the output rectifier and filter circuit and connected with an LED.