CN213847390U

CN213847390U - High-efficiency heat dissipation LED power supply

Info

Publication number: CN213847390U
Application number: CN202022754218.XU
Authority: CN
Inventors: 金小秀; 向健慧; 李建华
Original assignee: Shenzhen Shuangxiangcheng Technology Co ltd
Current assignee: Shenzhen Shuangxiangcheng Technology Co ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-07-30
Anticipated expiration: 2030-11-24

Abstract

The utility model discloses a high efficiency heat dissipation LED power, including voltage conversion module, rectifier filter circuit, heat dissipation module, LED drive module, voltage conversion module passes through transformer W and changes input voltage, and rectifier filter circuit turns into smooth direct current with the alternating current, and heat dissipation module is based on a high efficiency temperature control circuit of PWM speed governing principle design, and LED drive module orders about LED work through IC driven mode. The utility model discloses high efficiency heat dissipation LED power adopts the forced air cooling heat dissipation, simple structure, and low price, safe and reliable, the technique is ripe, has avoided the electric fan to be unnecessary at low temperature and has rotated, has effectively reduced moving noise, and is more high-efficient to adopt linear IC power, IC drive LED power has high reliability, high efficiency low cost.

Description

High-efficiency heat dissipation LED power supply

Technical Field

The utility model relates to a LED power technical field specifically is a high efficiency heat dissipation LED power.

Background

With the development of science and technology and the progress of society, energy conservation becomes a hot topic, and the development of society in the future is inevitable, an LED lamp is an energy-saving and environment-friendly green product, has a great effect in the increasingly developed lighting industry, but the LED lamp is poor in heat dissipation and is a semiconductor device with sensitive characteristics, and the LED lamp is usually formed by connecting a plurality of LED lamps in series at present, so that the current and the voltage are unstable, the LED lamps are not uniformly lightened, the heat dissipation is not good, the service life of the LED lamp is greatly shortened, the air-cooled heat dissipation on the market is too simple, the temperature can not be efficiently reduced, and the problems of temperature and wind speed cannot be effectively solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high efficiency heat dissipation LED power to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a high efficiency heat dissipation LED power, includes voltage conversion module, rectifier filter circuit, heat dissipation module, LED drive module, voltage conversion module changes input voltage through transformer W, and rectifier filter circuit turns into smooth direct current with the alternating current, and heat dissipation module is based on a high efficiency temperature control circuit that PWM speed governing principle designed, and LED drive module orders about LED work through IC driven mode.

As a further technical solution of the present invention: one end of a primary winding of the transformer W is connected with 220V alternating current, the other end of the primary winding of the transformer W is connected with 220V alternating current, a secondary winding of the transformer W is connected with two input ports of a rectifier T, an output port 2 of the rectifier T is connected with the anode of a capacitor C1, the VCC end of a heat dissipation module, the anode of a capacitor C2 and a resistor R1, a port 4 of the rectifier T is connected with the cathode of a capacitor C1, the GND end of the heat dissipation module, the cathode of a capacitor C2, a resistor R2, the GND end of a chip IC1, a capacitor C3 and the ground end, the other end of a resistor R1 is connected with the VBST end and the EN end of a chip IC1, the other end of a capacitor C3, the cathode of a diode D1, the capacitor C4 and the anode of a series diode group L, the RSET end of a chip IC1 is connected with the other end of a resistor R2, the SW end of a chip IC1 is connected with the anode of a diode D1 and a resistor R3, the other end of a resistor R3 is connected with the cathode of a capacitor C4 and the cathode of the series diode group L, a VCC end of the heat dissipation module is connected with a VCC end of a chip IC2, a REST end, a resistor R4, a potentiometer R7, a slider end of a potentiometer R7, an 8 end of a comparator A1, a resistor R8, a fan M and a cathode of a diode D4, a GND end of the heat dissipation module is connected with a resistor R6, a capacitor C5, a GND end of the chip IC2, a capacitor C2, a thermistor RT, a 4 end, a1 end of the comparator A2, an S end of a PMOS tube Q2 and an anode of a diode D2, an OUT end of the chip IC2 is connected with the other end of the resistor R2, a CONT end of the chip IC2 is connected with the other end of the capacitor C2, a DISCH end of the chip IC2 is connected with the other end of the resistor R2, the resistor R2 and the anode of the diode D2, a THRES end of the chip IC2 is connected with the other end of the resistor R2, the diode R2, the other end of the thermistor R2, the comparator R2, the other end of the comparator R2 and the comparator D2 are connected with the other end 2 of the thermistor R2, the 7 end of the comparator A1 is connected with the other end of the resistor R8 and is connected with the G pole of the PMOS tube Q1 through the resistor R9, and the D pole of the PMOS tube Q1 is connected with the cathode of the diode D5, the other end of the electric fan M and the cathode of the diode D4.

As a further technical solution of the present invention: the rectifier T and the capacitor C1 form a rectifying and filtering circuit, the heat dissipation module comprises a chip IC2, a comparator A1, a thermistor RT and a PMOS tube Q1, and the LED driving circuit comprises a chip IC1 and an LED lamp.

As a further technical solution of the present invention: the capacitor C1 and the capacitor C2 are polar capacitors, and the diode D1 is a voltage stabilizing diode.

As a further technical solution of the present invention: the chip IC1 is a CAT42912 driving chip.

As a further technical solution of the present invention: the chip IC2 adopts an NE555 time base integrated circuit.

As a further technical solution of the present invention: the comparator A1 is an LM311 comparator.

As a further technical solution of the present invention: the series diode group L is formed by connecting 1-7 LED lamps of 1W in series in the same direction.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses high efficiency heat dissipation LED power adopts the forced air cooling heat dissipation, simple structure, and low price, safe and reliable, the technique is ripe, has avoided the electric fan to be unnecessary at low temperature and has rotated, has effectively reduced moving noise, and is more high-efficient to adopt linear IC power, IC drive LED power has high reliability, high efficiency low cost.

Drawings

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

Fig. 2 is an overall circuit diagram of the present invention.

Fig. 3 is a circuit diagram of the heat dissipation module of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1: referring to fig. 1, the high-efficiency heat dissipation LED power supply includes a voltage conversion module, a rectifying and filtering circuit, a heat dissipation module, and an LED driving module, wherein the voltage conversion module changes an input voltage through a transformer W, the rectifying and filtering circuit converts an alternating current into a smooth direct current, the heat dissipation module is a high-efficiency temperature control circuit designed based on a PWM speed regulation principle, and the LED driving module drives an LED to operate in an IC driving manner.

Example 2: on the basis of embodiment 1, referring to fig. 2-3, one end of the primary winding of the transformer W is connected to 220V ac, the other end of the primary winding of the transformer W is connected to 220V ac, the secondary winding of the transformer W is connected to two input ports of the rectifier T, the output port 2 of the rectifier T is connected to the positive electrode of the capacitor C1, the VCC terminal of the heat dissipation module, the positive electrode of the capacitor C2 and the resistor R1, the port 4 of the rectifier T is connected to the negative electrode of the capacitor C1, the GND terminal of the heat dissipation module, the negative electrode of the capacitor C2, the resistor R2, the GND terminal of the chip IC1, the capacitor C3 and the ground terminal, the other end of the resistor R1 is connected to the VBST terminal of the chip IC1, the EN terminal, the other end of the capacitor C3, the cathode of the diode D1, the capacitor C4 and the anode of the series diode group L, the RSET terminal of the chip IC1 is connected to the other end of the resistor R2, the SW terminal of the chip IC1 is connected to the anode of the diode group and the cathode of the resistor R3, a VCC end of the heat dissipation module is connected with a VCC end of a chip IC2, a REST end, a resistor R4, a potentiometer R7, a slider end of a potentiometer R7, an 8 end of a comparator A1, a resistor R8, a fan M and a cathode of a diode D4, a GND end of the heat dissipation module is connected with a resistor R6, a capacitor C5, a GND end of the chip IC2, a capacitor C2, a thermistor RT, a 4 end, a1 end of the comparator A2, an S end of a PMOS tube Q2 and an anode of a diode D2, an OUT end of the chip IC2 is connected with the other end of the resistor R2, a CONT end of the chip IC2 is connected with the other end of the capacitor C2, a DISCH end of the chip IC2 is connected with the other end of the resistor R2, the resistor R2 and the anode of the diode D2, a THRES end of the chip IC2 is connected with the other end of the resistor R2, the diode R2, the other end of the thermistor R2, the comparator R2, the other end of the comparator R2 and the comparator D2 are connected with the other end 2 of the thermistor R2, the 7 end of the comparator A1 is connected with the other end of the resistor R8 and is connected with the G pole of the PMOS tube Q1 through the resistor R9, and the D pole of the PMOS tube Q1 is connected with the cathode of the diode D5, the other end of the electric fan M and the cathode of the diode D4.

The utility model discloses a theory of operation is: when the circuit is powered on, the LED lamp is powered through the LED driving module, the power supply temperature slowly rises, when a certain value is reached, the NTC negative temperature coefficient thermistor RT generates a modulation voltage signal which changes along with the temperature, the triangular wave and the modulation voltage generate PWM (pulse width modulation) waves with adjustable pulse width through the comparator LM311, so that the PMOS tube is conducted, the electric fan starts to work, when the temperature is higher, the conduction degree of the PMOS tube is better, the speed of the electric fan is higher, the PMOS tube is connected with a diode D5 in parallel, the MOS tube is protected, and the loss is reduced.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A high-efficiency heat-dissipation LED power supply comprises a voltage conversion module, a rectifying and filtering circuit, a heat dissipation module and an LED driving module, and is characterized in that the voltage conversion module comprises a transformer W, one end of a primary winding of the transformer W is connected with 220V alternating current, the other end of the primary winding of the transformer W is connected with 220V alternating current, a secondary winding of the transformer W is connected with two input ports of a rectifier T, an output port 2 of the rectifier T is connected with a positive electrode of a capacitor C1, a VCC end of the heat dissipation module, a positive electrode of a capacitor C2 and a resistor R1, a port 4 of the rectifier T is connected with a negative electrode of a capacitor C1, a GND end of the heat dissipation module, a negative electrode of a capacitor C2, a resistor R2, a GND end of a chip IC1, a capacitor C3 and a ground end, the other end of the resistor R1 is connected with a VBST end of a chip IC1, an EN end, the other end of the capacitor C3, a cathode of a diode D1, a capacitor C4 and an anode of a series diode group L, the RSET end of the chip IC1 is connected with the other end of the resistor R2, the SW end of the chip IC1 is connected with the anode of the diode D1 and the resistor R3, the other end of the resistor R3 is connected with the other end of the capacitor C4 and the cathode of the series diode group L, the VCC end of the heat dissipation module is connected with the VCC end of the chip IC 4, the REST end, the resistor R4, the potentiometer R4, the slider end of the potentiometer R4, the 8 end of the comparator A4, the resistor R4, the fan M and the cathode of the diode D4, the GND end of the heat dissipation module is connected with the other end of the resistor R4, the capacitor C4, the GND end of the chip IC 4, the capacitor C4, the thermistor RT, the 4 end, the 1 end of the comparator A4, the S end of the PMOS tube Q4 and the anode of the diode D4, the OUT end of the chip 4 is connected with the other end of the resistor R4, the resistor R4 and the anode of the diode D4 of the chip IC 4, the CH end of the chip IC 4 is connected with the other end of the capacitor C4, and the resistor RESR 4, the diode R4, the anode of the diode 4 of the chip 4, and the diode R4 are connected with the diode S end of the diode 4, and the diode S end of the diode 4 of the chip 4, and the diode S of the chip 4, the diode S end of the chip 4, and the diode S of the chip 4, and the diode S of the chip 4, and the diode S of the diode S of the diode S of the chip 4, and the diode S of the chip 4, and the diode of the chip 4, and the diode of the chip 4, and the diode of the chip 4, and the diode of the chip 4, and the diode of the chip 4, and the diode of the chip 4, and the diode of, The other end of the diode D3, the TRIG end of the chip IC2, the other end of the capacitor C8 and the 2 end of the comparator A1, the other end of the potentiometer R7 is connected with the other end of the thermistor RT and the 3 end of the comparator A1, the 7 end of the comparator A1 is connected with the other end of the resistor R8 and is connected with the G pole of the PMOS tube Q1 through the resistor R9, and the D pole of the PMOS tube Q1 is connected with the cathode of the diode D5, the other end of the fan M and the cathode of the diode D4.

2. The LED power supply with high heat dissipation efficiency as claimed in claim 1, wherein the rectifier T and the capacitor C1 form a rectifier filter circuit, the heat dissipation module comprises a chip IC2, a comparator A1, a thermistor RT and a PMOS tube Q1, and the LED driving circuit comprises a chip IC1 and an LED lamp.

3. The LED power supply as claimed in claim 2, wherein the capacitors C1 and C2 are polar capacitors, and the diode D1 is a zener diode.

4. The LED power supply with high heat dissipation efficiency as claimed in claim 3, wherein the chip IC1 is CAT42912 driver chip.

5. The LED power supply as claimed in claim 4, wherein said chip IC2 is an NE555 time base integrated circuit.

6. The LED power supply with high heat dissipation efficiency as recited in claim 5, wherein said comparator A1 is LM311 comparator.

7. The LED power supply with high heat dissipation efficiency as recited in claim 1, wherein the series diode group L is composed of 1-7 LED lamps of 1W connected in series in the same direction.