CN210670671U

CN210670671U - LED lamp power supply drive for controlling light source balance

Info

Publication number: CN210670671U
Application number: CN201921951421.7U
Authority: CN
Inventors: 马彬; 马金刚
Original assignee: Zhejiang Chenglian Electric Technology Co Ltd
Current assignee: Zhejiang Chenglian Electric Technology Co Ltd
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-06-02
Anticipated expiration: 2029-11-12

Abstract

The utility model discloses a LED lamp power drive for controlling light source balance, which comprises at least two lamp belts, wherein the front ends of the lamp belts are connected with input voltage, a power module and a plurality of LED lamps are arranged on the lamp belts, an output end is arranged on the power module, the output end is connected with the LED lamps in parallel, and the output ends of two adjacent lamp belts are connected in parallel; the utility model discloses characteristics such as power supply stability, light source balance.

Description

LED lamp power supply drive for controlling light source balance

Technical Field

The utility model relates to a balanced LED lamp power drive of control light source.

Background

With the progress of society, the technology of the LED lamp is more mature, and the LED lamp has the characteristics of high efficiency, energy conservation, long service life and the like, so the use amount of the LED lamp is increased rapidly. Especially, the decorative lamp on the house is usually formed by surrounding the LED strips, but the LED strips are limited in number and are usually connected in series, and the connection mode of the structure brings about the problems that one LED strip is short-circuited, and the whole strip is totally short-circuited, so that the whole lamp strip does not work.

Disclosure of Invention

The utility model discloses the technical problem of main solution provides a balanced LED lamp power drive of control light source.

The utility model discloses the technical scheme who solves its technical problem and adopt is: the utility model provides a control balanced LED lamp power drive of light source, includes two at least lamp areas, and the lamp area front end is connected with input voltage, wherein, is equipped with power module and a plurality of LED lamp on the lamp area, is equipped with the output on the power module, and the output is parallelly connected with the output in two adjacent lamp areas of LED lamp parallelly connected.

Adopt this kind of structure for every lamp area is through solitary power module power supply, makes holistic power supply more stable, and the output in two adjacent lamp areas of rethread makes in the use, if one of them power module outage or damage, can supply power through the power module in other lamp areas, guarantees in the use, and holistic all can work, can not have solitary out of work.

The power module is provided with a power control chip, and the power control chip detects current in the circuit and controls the power module to output in a constant voltage mode or in a constant current mode.

Control through power control chip for when power module all normally worked lamp area power was less than power module power, power module work is at CV (constant voltage mode) mode of operation, makes LED lamp work at normal operating condition, and when some power module broke down, other power modules detected the load increase through inside detection circuitry. If the current exceeds the maximum set current of the power module, the power module is automatically switched to a CC (constant current mode) working mode, so that the remaining power supply is prevented from generating a fault due to overload heating, and the current is redistributed equally according to the load because the anode and the cathode of the LED lamp strip and the anode and the cathode of the power module are all in parallel connection, so that the current is less than the maximum current of the LED lamp, the LED is prevented from being damaged, the whole LED can still work normally, the purpose of reducing the fault rate of the whole light source is achieved, and the whole fault of the light source can be even avoided completely.

The power supply module is provided with an isolation unit, and the isolation unit isolates input voltage from an output end.

The setting of isolation unit for input voltage carries out electrical isolation with the output, takes place the electric shock accident when preventing human touch lamp area.

Wherein, the isolation unit is provided with a transformer, and the input voltage is isolated from the output end.

The electric isolation effect can be well realized through the transformer.

The power supply module comprises a power supply module, an indicating lamp and a power supply module, wherein the power supply module also comprises the indicating lamp, and the indicating lamp indicates the working state of the power supply module.

The setting of pilot lamp, better display circuit's operating condition.

The circuit also comprises a capacitor CY1, the output end comprises a 24V + end and a V-end, and the V-end is grounded through the capacitor CY 1.

The isolation effect is better formed by the capacitance CY 1.

The LED lamp also comprises a current-limiting resistor, wherein the current-limiting resistor is connected with the LED lamp in series.

The LED lamp works more stably due to the arrangement of the current-limiting resistor.

The power module is provided with a protection unit, and the protection unit comprises a fuse and a bidirectional voltage-stabilizing tube.

The arrangement of the protection unit improves the stability of the whole circuit.

Wherein, the output ends of two adjacent lamp belts are connected in parallel through a wire or a wiring terminal.

The wires or the wiring terminals are electrically connected to form parallel connection, so that the connection is more convenient.

Drawings

Fig. 1 is a schematic block diagram of embodiment 1 of the present invention;

FIG. 2 is a structural view of embodiment 1 of the present invention;

fig. 3 is an electrical schematic diagram of embodiment 1 of the present invention;

fig. 4 is an electrical schematic diagram of embodiment 2 of the present invention.

Detailed Description

Example 1:

referring to fig. 1-3, a LED lamp power driver for controlling light source balance includes at least two strips 1, where the number of the strips 1 may be set according to actual requirements, and this embodiment only uses two strips 1 as an example for description, and since the structures of the two strips 1 are the same, only the structure of one strip 1 is described here. The output ends of the two lamp belts 1 are connected in parallel through a wire or a wiring terminal. The wires or the wiring terminals are electrically connected to form parallel connection, so that the connection is more convenient. Here, in order to secure the stability of the electrical connection, the parallel connection may be performed by two sets of wires.

The LED lamp strip comprises a specific structure, wherein a power supply module and a plurality of LED lamps are arranged on a lamp strip 1, an input end, an output end, a protection unit, a transformer, an indicator lamp and a power supply control chip U1 are arranged on the power supply module, the input end is communicated with input voltage, the input end comprises a live wire end and a zero wire end, and the input voltage can be AC 110V-265V.

The protection unit comprises a fuse F1 and a bidirectional voltage-stabilizing tube, the fuse F1 is connected with the live wire end in series, the other end of the fuse F1 is connected with the rectifier bridge BD1, one end of the bidirectional voltage-stabilizing tube is connected with the live wire end, and the other end of the bidirectional voltage-stabilizing tube is connected with the zero line end. Four pins of the rectifier bridge BD1 are respectively connected with the fuse F1, the zero line end, the positive electrode of the capacitor C1 and the ground wire, and the negative electrode of the capacitor C1 is grounded.

The power control chip can be controlled to form constant voltage mode output or constant current mode output, and can be power control chips of different models, the power control chip U1 includes a VDD end, an INV end, a COMP end, a CS end, a GND end and a DRAIN end, the VDD end is respectively connected with one end of a capacitor C2, one end of a resistor R6 and one end of a resistor R1, and the other end of the resistor R1 is connected with the anode of a capacitor C1 through a resistor R2. The INV end is connected to one end of the resistor R7, one end of the resistor R8, and one end of the resistor R9, respectively, and the other end of the resistor R7 is connected to the other end of the capacitor C2 after being connected in parallel with the resistor R8 and is grounded. The other end of the resistor R6 is connected to the cathode of the diode D1, the anode of the diode D1 is connected to the other end of the resistor R9 and the coil T3, respectively, and the other end of the coil T3 is grounded. The COMP terminal is connected to ground through a capacitor C6. After the resistor R10 and the resistor R3 are connected in parallel, one end is connected with the CS end, and the other end is grounded. The GND terminal is grounded. The DRAIN terminal is connected to the anode of the diode D2 and the T1 pin 1 of the transformer, respectively. One end of the capacitor C3 is connected to the anode of the capacitor C1, and the other end is connected to the cathode of the diode D2. After the resistor R4 and the resistor R5 are connected in parallel, one end of the resistor R4 is connected with the anode of the capacitor C1, and the other end of the resistor R4 is connected with the cathode of the diode D2. The positive terminal of capacitor C1 is also connected to pin 4 of transformer T1. Pin 2 of the transformer T1 is connected to the anode of the diode D4 and the anode of the diode D3, respectively. The electrical isolation effect can be achieved well by the transformer T1.

The cathode of the diode D4 is connected with the anode of the capacitor C4, one end of the resistor R12 and the 24V + end respectively, the cathode of the diode D3 is connected with the anode of the LED1 through the resistor R11, and the cathode of the LED1 is connected with the cathode of the capacitor C4, the other end of the resistor R12 and the V-end respectively. The LED1 is here an indicator light that indicates the operating status of the power module.

The cathode of the LED lamp is connected with the V-end, and the anode of the LED lamp is connected with the 24V + end. The V-terminal is connected to ground through a capacitor CY 1.

Adopt this kind of structure for every lamp area 1 is through solitary power module power supply, makes holistic power supply more stable, and the output in two adjacent lamp areas 1 of rethread makes in the use, if one of them power module outage or damage, can supply power through the power module in other lamp areas 1, guarantees in the use, holistically all can work, can not have solitary out of work. Control through power control chip for when power module all normally worked 1 power in lamp area was less than power module power, power module work is at CV (constant voltage mode) mode of operation, makes LED lamp work at normal operating condition, and when some power module broke down, other power modules detected the load increase through inside detection circuitry. If the current exceeds the maximum set current of the power module, the power module is automatically switched to a CC (constant current mode) working mode, so that the remaining power supply is prevented from being failed due to overload heating, and the current is redistributed averagely according to the load at the moment because the anode and the cathode of the LED lamp strip 1 and the anode and the cathode of the power module are all in parallel connection, so that the current is less than the maximum current of the LED lamp, the LED is not damaged, the whole LED can still work normally, the purpose of reducing the failure rate of the whole light source is achieved, and the occurrence of the whole failure of the light source can be even avoided completely.

Example 2:

referring to fig. 4, embodiment 2 is different from embodiment 1 in that the LED lighting device further includes a current limiting resistor, the current limiting resistor is connected in series with the LED lamp, and specifically, the anode of the LED lamp is connected to the V-terminal through the current limiting resistor. The LED lamp works more stably due to the arrangement of the current-limiting resistor.

Claims

1. The utility model provides a balanced LED lamp power drive of control light source, includes two at least lamp areas, and the lamp area front end is connected its characterized in that with input voltage: the LED lamp strip is provided with a power supply module and a plurality of LED lamps, the power supply module is provided with an output end, and the output end is connected with the LED lamps in parallel and the output ends of two adjacent lamp strips in parallel.

2. The power driver of an LED lamp for controlling the balance of a light source as claimed in claim 1, wherein: the power supply module is provided with a power supply control chip, and the power supply control chip detects the current in the circuit and controls the power supply module to output in a constant voltage mode or in a constant current mode.

3. The power driver of an LED lamp for controlling the balance of a light source as claimed in claim 1, wherein: the power module is provided with an isolation unit which isolates the input voltage from the output end.

4. The power driver of an LED lamp for controlling the balance of a light source according to claim 3, wherein: the isolation unit is provided with a transformer which isolates the input voltage from the output end.

5. The power driver of an LED lamp for controlling the balance of a light source as claimed in claim 1, wherein: the power supply module also comprises an indicator light which indicates the working state of the power supply module.

6. The power driver of an LED lamp for controlling the balance of a light source as claimed in claim 1, wherein: the circuit also comprises a capacitor CY1, the output end comprises a 24V + end and a V-end, and the V-end is grounded through a capacitor CY 1.

7. The power driver of an LED lamp for controlling the balance of a light source as claimed in claim 1, wherein: the LED lamp also comprises a current-limiting resistor, wherein the current-limiting resistor is connected with the LED lamp in series.

8. The power driver of an LED lamp for controlling the balance of a light source as claimed in claim 1, wherein: the power module is provided with a protection unit, and the protection unit comprises a fuse and a bidirectional voltage-stabilizing tube.

9. The power driver of an LED lamp for controlling the balance of a light source as claimed in claim 1, wherein: the output ends of two adjacent lamp belts are connected in parallel through a wire or a wiring terminal.