CN216626120U - Constant voltage power supply centralized power supply system - Google Patents
Constant voltage power supply centralized power supply system Download PDFInfo
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- CN216626120U CN216626120U CN202122710216.5U CN202122710216U CN216626120U CN 216626120 U CN216626120 U CN 216626120U CN 202122710216 U CN202122710216 U CN 202122710216U CN 216626120 U CN216626120 U CN 216626120U
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Abstract
The utility model provides a constant-voltage power supply centralized power supply system which comprises a power supply module connected with a direct-current bus and a load connected with two poles of the power supply module, wherein the power supply module comprises a power supply module, a communication module connected with the power supply module, an MOSFET connected with the communication module and a diode connected with the MOSFET in parallel, the grid of the MOSFET is connected with the communication module, the source electrode of the MOSFET and the cathode of the diode are connected to the cathode of the power supply module, the drain electrode of the MOSFET and the anode of the diode are connected to the cathode of the load, and the load comprises a power supply unit, a signal separation unit, a signal conversion unit, a current regulation unit and an LED lamp load. The communication module of the constant voltage power supply centralized power supply system is integrated into the power supply module, so that the communication and power supply are integrated, and the design ensures that the wiring of the constant voltage power supply centralized power supply system is simple and the cost is reduced.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to the technical field of circuits, in particular to a constant-voltage power supply centralized power supply system.
[ background of the utility model ]
The LED (light emitting diode) with the name of "green lighting" is receiving attention, and compared with the traditional light source, the LED has the characteristics of green environmental protection, small size, low power consumption, long service life and the like, and is very suitable for being used as a light source of a lamp. The constant voltage power supply centralized power supply system designed for the LED load can convert power supply into specific voltage and current to drive the LED load to emit light. Meanwhile, in order to meet the personalized requirements of users or adjust the light according to the environmental requirements to reduce the energy consumption, the constant-voltage power supply centralized power supply system further comprises a communication module to exchange data with the LED load, so that the control equipment and the monitoring lamp are realized.
Currently, one of the LED dimming technologies that is widely used is a Pulse Width Modulation (PWM) technology, in which a duty ratio of a PWM signal is adjusted to adjust a lighting time of an LED light source, and when the duty ratio of the PWM signal is larger, the lighting time of the LED light source in one period is longer, and brightness perceived by human eyes is higher, so as to implement dimming.
An existing centralized power supply system with a constant voltage power supply generally includes a power supply module, a communication module and a load, which are independent of each other. The power module is used for providing driving voltage for the load, and the communication module can emit PWM signals to control the current flowing through the load so as to realize dimming of the LED lamp load. However, in the wiring, since there are 2 wires between the power module and the load and there are 2 wires between the communication module and the load, 4 wires are required for the entire system, which makes the wiring complicated, and especially when the number of loads increases, the wiring becomes more complicated and the cost increases.
Therefore, there is a need to provide a new constant voltage power centralized power supply system to solve the above-mentioned technical problems.
[ Utility model ] content
The utility model aims to provide a constant voltage power supply centralized power supply system which integrates communication and power supply and has simple wiring and low cost so as to solve the problems in the related technology.
In order to achieve the above object, the present invention provides a constant voltage power supply centralized power supply system, which includes a power module connected to a dc bus and a load connected to two poles of the power module, wherein the power module includes a power module, a communication module connected to the power module, a MOSFET connected to the communication module, and a diode connected in parallel to the MOSFET, a gate of the MOSFET is connected to the communication module, a source of the MOSFET and a cathode of the diode are connected to a cathode of the power module, a drain of the MOSFET and an anode of the diode are connected to a cathode of the load, and the load includes a power supply unit, a signal separation unit, a signal conversion unit, a current regulation unit, and an LED lamp load.
Preferably, the signal separation unit is connected to the power supply unit, and the signal conversion unit is connected to the signal separation unit and the power supply unit.
Preferably, the current adjusting unit is connected to the signal converting unit and the power supply unit, and the LED lamp load is connected to the current adjusting unit.
Preferably, the communication module sends out a high level when communication is not required, the MOSFET is turned on, and the diode is short-circuited.
Preferably, the communication module transmits a PWM signal to make the MOSFET in a PWM control state when communication is required.
Preferably, during communication, voltage fluctuation is generated across the load, and the signal separation unit detects the voltage fluctuation and restores the PWM signal to be transmitted to the signal conversion unit.
More preferably, the voltage fluctuation is the same as the voltage drop of the diode.
More preferably, the signal conversion unit converts the PWM signal into a reference voltage signal that changes a current and transmits the reference voltage signal to the current adjustment unit.
Preferably, the current regulating unit changes the current flowing through the LED lamp load after receiving the reference voltage signal for changing the current.
More preferably, the number of the loads is two and connected in parallel.
The utility model has the technical effects that: integrate into the power module with communication module, through set up parallelly connected MOSFET between communication module and load, the diode, when not communicating, power module supplies power to the load, and when needing to communicate, communication module realizes controlling the load through transmission PWM signal, two unifications of communication and power supply have been realized, the benefit lies in that only need two wires between load and the power, just can accomplish the power and supply power and the communication function between power and the load for the load, the degree of difficulty and the cost of wiring in the engineering that has significantly reduced and in communication process, LED lamp load is supplied power by the power supply unit, the phenomenon of power supply interrupt can not appear, and communication module can reach the electrodeless regulation of adjusting luminance to LED lamp load.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a block schematic diagram of a prior art constant voltage power centralized power supply system;
fig. 2 is a block diagram of a centralized power supply system of a constant voltage power supply according to a first embodiment of the present invention.
Fig. 3 is a block diagram of a constant voltage power supply centralized power supply system according to a second embodiment of the present invention.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a conventional constant voltage power supply centralized system 100 'includes a power module 1', a communication module 2 ', and a load 3'. The load 3 'includes a signal conversion unit 31', a current regulation unit 32 ', and an LED lamp load 33'.
Two poles of power module 1 'are connected direct current bus DCBUS, and power module 1' is used for providing drive voltage for load 3 ', and communication module 2' can transmit the PWM signal. The two poles of the load 3 'are connected to the two poles of the power module 1', the two signal poles of the communication module 2 'are connected to the load 3', the signal conversion unit 31 'is connected to the current regulation unit 32', and the current regulation unit 32 'is connected to the LED lamp load 33'. The signal conversion unit 31 ' receives the PWM signal and converts the PWM signal into a communication command, and transmits the communication command to the current adjustment unit 32 ', and the current adjustment unit 32 ' changes the magnitude of the current flowing through the load 3 ' according to the communication command, thereby implementing dimming of the LED lamp load 33 '. However, such a design makes wiring complicated and increases cost.
As shown in fig. 2, a constant voltage power centralized power supply system 100 according to a first embodiment of the present invention includes a power module 1 and a load 2 connected to two poles of the power module 1. Two poles of the power module 1 are connected with the positive pole and the negative pole of the DC bus DCBUS.
The power module 1 comprises a power module 11, a communication module 12 connected with the power module 11, a MOS transistor Q1 connected with the communication module 12, and a diode D1 connected in parallel with the MOS transistor Q1, wherein the MOS transistor Q1 is a MOSFET field effect transistor. The power module 11 functions as power conversion and supplies power to the communication module 12.
The G-pole (gate) of the MOS transistor Q1 is connected to the communication module 12, the S-pole (source) of the MOS transistor Q1 and the cathode of the diode D1 are connected to the cathode of the power module 1, and the D-pole (drain) of the MOS transistor Q1 and the anode of the diode D1 are connected to the cathode of the load 2.
The load 2 includes a power supply unit 21, a signal separation unit 22 connected to the power supply unit 21, a signal conversion unit 23 connected to the power supply unit 21 and the signal separation unit 22, a current adjustment unit 24 connected to the power supply unit 21 and the signal conversion unit 23, and an LED lamp load 25 connected to the current adjustment unit 24. The power supply unit 21 functions as power conversion, and supplies power to the signal separation unit 22, the signal conversion unit 23, the current adjustment unit 24, and the LED lamp load 25.
The working principle of the constant voltage power supply centralized power supply system is as follows:
when the power supply is powered on, the direct current bus DCBUS has stable voltage output, and the power supply module 11 plays a role in power conversion and supplies power to the communication module 12 and the load 2.
When the communication is not performed, the communication module 12 sends out a high level to make the MOS transistor Q1 in a conducting state, and the diode D1 is short-circuited, so that the loss of the diode D1 can be reduced, and the load 2 operates normally.
During communication, the communication module 12 sends out a PWM (pulse width modulation) signal to make the MOS transistor Q1 in a PWM control state, and the MOS transistor Q1 short-circuits the diode D1 and repeatedly cycles the short-circuit to form a diode drop VdSo that a fluctuation V of the diode drop occurs on the buspI.e. voltage fluctuations V will occur across the load 2pVoltage fluctuation VpIs equal to the voltage drop V of the diode D1d。
When the signal separation unit 22 of the load 2 detects the voltage fluctuation VpIn this case, the ripple signal is separated and restored to a PWM signal, and then transmitted to the signal conversion unit 23, the signal conversion unit 23 converts the PWM signal into a reference voltage signal for changing a current and transmits the reference voltage signal to the current adjustment unit 24, and the current adjustment unit 24 changes the current flowing through the LED lamp load 25, thereby adjusting the brightness of the LED lamp load.
As shown in fig. 3, the constant voltage power centralized feeding system 200 according to the second embodiment of the present invention is the same as the power module 1, the MOS transistor Q1, and the diode D1 of the constant voltage power centralized feeding system 100 according to the first embodiment of the present invention, except that the load includes a load 2 and a load 3 connected in parallel. The load 3 has the same structure as the load 2, and includes a power supply unit 31, a signal separation unit 32 connected to the power supply unit 31, a signal conversion unit 33 connected to the power supply unit 31 and the signal separation unit 32, a current adjustment unit 34 connected to the power supply unit 31 and the signal conversion unit 33, and an LED lamp load 35 connected to the current adjustment unit 34. The power supply unit 31 functions as power conversion, and supplies power to the signal separation unit 32, the signal conversion unit 33, the current adjustment unit 34, and the LED lamp load 35.
The G-pole (gate) of the MOS transistor Q1 is connected to the communication module 12, the S-pole (source) of the MOS transistor Q1 and the cathode of the diode D1 are connected to the cathode of the power module 1, and the D-pole (drain) of the MOS transistor Q1 and the anode of the diode D1 are connected to the cathodes of the loads 2 and 3.
When the power supply is powered on, the direct current bus DCBUS has stable voltage output, and the power supply module 11 plays a role in power conversion and supplies power to the communication module 12, the load 2 and the load 3.
When the communication is not performed, the communication module 12 sends out a high level to make the MOS transistor Q1 in a conducting state, and the diode D1 is short-circuited, so that the loss of the diode D1 can be reduced, and the load 2 and the load 3 operate normally.
During communication, the communication module 12 sends out a PWM (pulse width modulation) signal to make the MOS transistor Q1 in a PWM control state, and the MOS transistor Q1 short-circuits the diode D1 and repeatedly cycles the short-circuit to form a diode drop VdSo that a fluctuation V of the diode drop occurs on the buspThat is, voltage fluctuation V is generated between both ends of the load 2 and the load 3pVoltage fluctuation VpIs equal to the voltage drop V of the diode D1d。
The signal separation unit 22 of the load 2 detects the voltage fluctuation VpIn this case, the ripple signal is separated and restored to the PWM signal, and then transmitted to the signal conversion unit 23, the signal conversion unit 23 converts the PWM signal into a reference voltage signal for changing the current and transmits the reference voltage signal to the current adjustment unit 24, and the current adjustment unit 24 changes the current flowing through the LED lamp load 25, thereby adjusting the brightness of the LED lamp load 25.
The signal separation unit 32 of the load 3 detects the voltage fluctuation VpIn this case, the ripple signal is separated and reduced to a PWM signal, and then transmitted to the signal conversion unit 33, the signal conversion unit 33 converts the PWM signal to a reference voltage signal for changing a current and transmits the reference voltage signal to the current adjustment unit 34, and the current adjustment unit 34 changes the current flowing through the LED lamp load 35, thereby adjusting the LED lampThe brightness of the load 35.
In other embodiments, the number of loads is plural and is connected in parallel, the number of loads is determined by the power level of the power module 1, and if the power of the power module 1 is large enough, the number of loads 2 may be any number.
Compared with the prior art, the constant-voltage power supply centralized power supply system has the advantages that the communication module is integrated into the power supply module, the MOSFET and the diode which are connected in parallel are arranged between the communication module and the load, when the communication is not carried out, the power supply module supplies power to the load, and when the communication is needed, the communication module controls the load by emitting the PWM signal. In addition, in actual operation, for example, in scenes such as factories, offices, greenhouses and the like, a great number of LED lamp loads are often required to work simultaneously.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. The utility model provides a constant voltage power supply centralized power supply system, its is including the power module of connecting DC bus and connecting the load of the two poles of the earth of power module, its characterized in that: the power module includes power module, connects power module's communication module, connects communication module's MOSFET, with the parallelly connected diode of MOSFET, MOSFET's grid is connected communication module, MOSFET's source electrode, the negative pole of diode is connected to power module's negative pole, MOSFET's drain electrode, the positive pole of diode is connected to the negative pole of load, the load includes power supply unit, signal separation unit, signal conversion unit, current regulation unit and LED lamp load.
2. The constant voltage power supply system as claimed in claim 1, wherein the signal splitting unit is connected to the power supply unit, and the signal converting unit is connected to the signal splitting unit and the power supply unit.
3. The constant voltage power supply system as claimed in claim 2, wherein the current adjusting unit is connected to the signal converting unit and the power supply unit, and the LED lamp load is connected to the current adjusting unit.
4. The constant voltage power supply system as claimed in claim 3, wherein said communication module sends out a high level when communication is not required, said MOSFET is turned on, and said diode is short-circuited.
5. The constant voltage power supply system as claimed in claim 4, wherein the communication module transmits a PWM signal to make the MOSFET in a PWM control state when communication is required.
6. The constant voltage power supply system as claimed in claim 5, wherein during communication, voltage fluctuation occurs across the load, and the signal separation unit detects the voltage fluctuation and restores the PWM signal to the signal conversion unit.
7. The centralized power supply system of claim 6, wherein the voltage fluctuation is the same as the voltage drop of the diode.
8. The constant-voltage power supply centralized power supply system according to claim 7, wherein the signal conversion unit converts the PWM signal into a reference voltage signal that changes a current and transmits the reference voltage signal to the current regulation unit.
9. The system as claimed in claim 8, wherein the current adjusting unit changes the current flowing through the LED lamp load after receiving the reference voltage signal for changing the current.
10. The constant-voltage power supply centralized power supply system according to claim 1, wherein the number of the loads is two and the loads are connected in parallel.
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| CN202122710216.5U CN216626120U (en) | 2021-11-05 | 2021-11-05 | Constant voltage power supply centralized power supply system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113873720A (en) * | 2021-11-05 | 2021-12-31 | 深圳市角度控光智能照明技术有限公司 | Constant voltage power supply centralized power supply system and communication signal transmission method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113873720A (en) * | 2021-11-05 | 2021-12-31 | 深圳市角度控光智能照明技术有限公司 | Constant voltage power supply centralized power supply system and communication signal transmission method thereof |
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