LED uninterruptible power supply emergency power supply

Abstract

The utility model discloses an LED uninterruptible power supply emergency power supply, which relates to the technical field of LED power supplies, and comprises a power supply module used for supplying power; the power supply detection module is used for detecting power failure and outputting a signal in a high-level state in a delayed manner when the power supply module is powered down; the electric energy control module is used for controlling transmission of electric energy; the charging control module is used for adjusting voltage and outputting charging electric energy; the uninterruptible power supply module is used for storing energy, discharging and supplying power to the LED driving module; and the LED driving module is used for carrying out constant-current regulation processing on the input electric energy and carrying out LED illumination work. According to the LED uninterruptible power supply emergency power supply, the power supply detection module carries out power failure detection, when the power supply module is in power failure, the uninterruptible power supply module is controlled to supply power to the LED driving module, when the power supply module supplies power again, the uninterruptible power supply module is controlled to supply power in a delayed mode, and meanwhile the charging control module provides charging electric energy for the uninterruptible power supply module.

Description

Technical Field

[0001] The utility model relates to the technical field of LED power supplies, in particular to an LED uninterruptible power supply emergency power supply. Background Art

[0002] LED (light emitting diode) has gradually become the main light source for machine vision due to its advantages such as high brightness, high shape freedom, high directivity, high-efficiency illumination, wavelength selectivity, high-speed responsiveness, high efficiency, low power consumption and long life. LED can be driven by a constant current power supply to achieve high-efficiency lighting control, and the existing LED power supply has an emergency power supply to ensure that in the event of a power outage, the emergency power supply can provide uninterrupted power supply to maintain the LED lighting work. However, when the emergency power supply starts to provide uninterrupted power supply, if frequent power switching occurs in a short period of time, it is easy to cause the LED to flicker and shorten the service life of the switching device, so it needs to be improved. Utility Model Content

[0003] The embodiment of the utility model provides an LED uninterruptible power supply emergency power supply to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An LED uninterruptible power supply emergency power supply, comprising: a power supply module, a power supply detection module, a power control module, a charging control module, an uninterruptible power supply module and an LED driving module;

[0006] A power module, used to access DC power;

[0007] A power supply detection module, connected to the power supply module, for isolating the DC power and detecting power failure, and outputting a first control signal when power failure occurs, and for delaying the first control signal and delaying the output of a second control signal;

[0008] A power control module, connected to the power supply module, the power supply detection module and the LED driving module, for transmitting DC power to the LED driving module, and for receiving a second control signal and stopping the transmission of power;

[0009] a charging control module, connected to the power supply module and the power supply detection module, for receiving a second control signal and performing DC-DC regulation processing on the direct current power, so as to output charging power;

[0010] An uninterruptible power supply module, connected to the power supply detection module, the charging control module and the LED driving module, used for storing the charged electric energy and releasing the stored electric energy, and used for receiving the second control signal and transmitting the released electric energy to the LED driving module;

[0011] The LED driving module is used to perform constant current regulation on the electric energy output by the uninterruptible power supply module and the electric energy control module and perform LED lighting work.

[0012] As a further solution of the utility model: the power supply module includes a power supply interface and a first capacitor; the power supply detection module includes a first resistor, a first optical coupler, a second resistor, a first power supply, a first switch tube, a second capacitor and a third resistor;

[0013] Preferably, the first end of the power interface is connected to one end of the first capacitor and to the first end of the first optocoupler through the first resistor, the second end of the first optocoupler, the other end of the first capacitor and the second end of the power interface are all grounded, the third end of the first optocoupler is connected to one end of the second capacitor and the collector of the first switch tube, the power control module, the charging control module and the uninterruptible power supply module are connected and the first power supply and the collector of the first switch tube are connected through the second resistor, and the emitter of the first switch tube is connected to the other end of the second capacitor, the fourth end of the first optocoupler and the ground through the third resistor.

[0014] As a further solution of the utility model: the power control module includes a sixth resistor, a fourth power tube and a second switch tube;

[0015] Preferably, the drain of the fourth power tube is connected to the first end of the power supply interface and is connected to the gate of the fourth power tube and the collector of the second switch tube through the sixth resistor, the emitter interface of the second switch tube, the source of the fourth power tube is connected to the LED driving module, and the base of the second switch tube is connected to the emitter of the first switch tube.

[0016] As a further solution of the utility model: the uninterruptible power supply module includes a second power tube and a battery pack;

[0017] Preferably, the gate of the second power tube is connected to the emitter of the first switch tube, the source of the second power tube is connected to the LED driving module, the drain of the second power tube is connected to the first end of the battery pack, and the second end of the battery pack is grounded.

[0018] As a further solution of the utility model: the charging control module includes a first power tube and a charging device;

[0019] Preferably, the drain of the first power tube is connected to the first end of the power interface, the source of the first power tube is connected to the input end of the charging device, the ground end of the charging device is grounded, and the output end of the charging device is connected to the first end of the battery pack.

[0020] As a further solution of the utility model: the LED driving module includes a third capacitor, a fourth capacitor, a first driver, a fourth resistor, a third power tube, a first diode, a fifth capacitor, a first inductor, a fifth resistor and an LED module;

[0021] Preferably, one end of the third capacitor is connected to the first end of the first driver, the cathode of the first diode, one end of the fifth capacitor, the first end of the LEE module, the source of the second power tube and the source of the fourth power tube, the sixth end, the seventh end and the fifth end of the first driver are all connected to the ground through the fourth capacitor, the eighth end of the first driver is connected to the other end of the third capacitor, the third end of the first driver, one end of the fifth resistor and the ground through the fourth resistor, the fourth end of the first driver is connected to the gate of the third power tube, the second end of the first driver is connected to the other end of the fifth resistor and the source of the third power tube, and the drain of the third power tube is connected to the anode of the first diode and the other end of the fifth capacitor and is connected to the second end of the LED module through the first resistor.

[0022] Compared with the prior art, the beneficial effects of the utility model are as follows: the LED uninterruptible power supply emergency power supply of the utility model detects power failure of the power module by the power supply detection module, and when the power module is supplying power, it cooperates with the power supply detection module to control the power control module to supply power to the LED driver module, and the LED driver module performs constant current regulation and lighting control, and when the power module loses power, the uninterruptible power supply module is controlled to supply power to the LED driver module to achieve uninterruptible power supply, and when the power module is powered on again, the power supply detection module will delay the control of the uninterruptible power supply module to supply power, avoiding frequent closing of the switch device and frequent flickering of the LED driver module, and at the same time, the charging control module provides charging power to the uninterruptible power supply module to improve the power supply endurance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 The utility model provides a schematic block diagram of the principle of an LED uninterruptible power supply emergency power supply.

[0025] Figure 2 A circuit diagram of an LED uninterruptible power supply emergency power supply provided by an example of the utility model.

[0026] Figure 3 This is a connection circuit diagram of the power control module provided by the example of the utility model. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In one embodiment, see Figure 1 , an LED uninterruptible power supply emergency power supply, comprising: a power supply module 1, a power supply detection module 2, a power control module 3, a charging control module 4, an uninterruptible power supply module 5 and an LED driving module 6;

[0029] Power module 1, used for receiving direct current power;

[0030] A power supply detection module 2, connected to the power supply module 1, for isolating the DC power and detecting power failure, and outputting a first control signal when power failure occurs, and for delaying the first control signal and delaying the output of a second control signal;

[0031] The power control module 3 is connected to the power supply module 1, the power supply detection module 2 and the LED driving module 6, and is used to transmit DC power to the LED driving module 6, and is used to receive the second control signal and stop the transmission of power;

[0032] A charging control module 4 is connected to the power supply module 1 and the power supply detection module 2, and is used to receive the second control signal and perform DC-DC regulation on the direct current power to output charging power;

[0033] An uninterruptible power supply module 5, connected to the power supply detection module 2, the charging control module 4 and the LED driving module 6, for storing the charged electric energy and releasing the stored electric energy, for receiving the second control signal and transmitting the released electric energy to the LED driving module 6;

[0034] The LED driving module 6 is used to perform constant current regulation processing on the electric energy output by the uninterruptible power supply module 5 and the electric energy control module 3 and perform LED lighting work.

[0035] In a specific embodiment, the power supply module 1 can adopt a power supply circuit composed of a power supply interface and a capacitor to access DC power; the power supply detection module 2 can adopt a power supply detection circuit composed of a photocoupler, a capacitor, a transistor, etc., which can detect power failure of the power supply module 1 and delay the output of a high-level state signal when the power supply module 1 is re-powered; the power control module 3 can adopt a power control circuit composed of a power tube, a transistor, etc. to control the transmission of power; the charging control module 4 can adopt a charging control circuit composed of a charging device and a power tube to perform DC-DC regulation on the input power so as to provide charging power for the uninterruptible power supply module 5; the uninterruptible power supply module 5 can adopt an uninterruptible power supply circuit composed of a battery pack and a power tube to store and release power; the LED drive module 6 can adopt an LED drive circuit composed of an LED driver, a capacitor, a power tube, an LED module, etc., which can realize constant current regulation and lighting control and regulation.

[0036] In another embodiment, see Figure 1 , Figure 2 and Figure 3 The power supply module 1 includes a power supply interface and a first capacitor C1; the power supply detection module 2 includes a first resistor R1, a first optical coupler U1, a second resistor R2, a first power supply VCC1, a first switch tube VT1, a second capacitor C2 and a third resistor R3;

[0037] Specifically, the first end of the power interface is connected to one end of the first capacitor C1 and is connected to the first end of the first optocoupler U1 through the first resistor R1, the second end of the first optocoupler U1, the other end of the first capacitor C1 and the second end of the power interface are all grounded, the third end of the first optocoupler U1 is connected to one end of the second capacitor C2 and the collector of the first switch tube VT1, the power control module 3, the charging control module 4 and the uninterruptible power supply module 5 are connected to the first power supply VCC1 and the collector of the first switch tube VT1 through the second resistor R2, and the emitter of the first switch tube VT1 is connected to the other end of the second capacitor C2, the fourth end of the first optocoupler U1 and the ground through the third resistor R3.

[0038] In a specific embodiment, the first optical coupler U1 can be a PC817 photoelectric coupler; the second capacitor C2 performs energy storage and delay control on the first switch tube VT1, wherein the first switch tube VT1 can be an NPN transistor.

[0039] Furthermore, the power control module 3 includes a sixth resistor R6, a fourth power tube Q4 and a second switch tube VT2;

[0040] Specifically, the drain of the fourth power tube Q4 is connected to the first end of the power interface and is connected to the gate of the fourth power tube Q4 and the collector of the second switch tube VT2 through the sixth resistor R6, the emitter interface of the second switch tube VT2, the source of the fourth power tube Q4 is connected to the LED driving module 6, and the base of the second switch tube VT2 is connected to the emitter of the first switch tube VT1.

[0041] In a specific embodiment, the fourth power tube Q4 may be an N-channel field effect tube; and the second switch tube VT2 may be an NPN transistor.

[0042] Furthermore, the uninterruptible power supply module 5 includes a second power tube Q2 and a battery pack;

[0043] Specifically, the gate of the second power tube Q2 is connected to the emitter of the first switch tube VT1, the source of the second power tube Q2 is connected to the LED driving module 6, the drain of the second power tube Q2 is connected to the first end of the battery pack, and the second end of the battery pack is grounded.

[0044] In a specific embodiment, the second power tube Q2 can be an N-channel field effect tube.

[0045] Furthermore, the charging control module 4 includes a first power tube Q1 and a charging device;

[0046] Specifically, the drain of the first power tube Q1 is connected to the first end of the power interface, the source of the first power tube Q1 is connected to the input end of the charging device, the ground end of the charging device is grounded, and the output end of the charging device is connected to the first end of the battery pack.

[0047] In a specific embodiment, the first power tube Q1 may be an N-channel field effect tube; the charging device may be a charging circuit composed of FM6316FE for DC-DC regulation.

[0048] Further, the LED driving module 6 includes a third capacitor C3, a fourth capacitor C4, a first driver U2, a fourth resistor R4, a third power tube Q3, a first diode D1, a fifth capacitor C5, a first inductor L1, a fifth resistor R5 and an LED module;

[0049] Specifically, one end of the third capacitor C3 is connected to the first end of the first driver U2, the cathode of the first diode D1, one end of the fifth capacitor C5, the first end of the LEE module, the source of the second power tube Q2 and the source of the fourth power tube Q4. The sixth end, the seventh end and the fifth end of the first driver U2 are all connected to the ground through the fourth capacitor C4. The eighth end of the first driver U2 is connected to the other end of the third capacitor C3, the third end of the first driver U2, one end of the fifth resistor R5 and the ground through the fourth resistor R4. The fourth end of the first driver U2 is connected to the gate of the third power tube Q3. The second end of the first driver U2 is connected to the other end of the fifth resistor R5 and the source of the third power tube Q3. The drain of the third power tube Q3 is connected to the anode of the first diode D1 and the other end of the fifth capacitor C5 and is connected to the second end of the LED module through the first resistor R1.

[0050] In a specific embodiment, the first driver U2 may be a HV9910B driver; the third power tube Q3 may be an N-channel field effect tube.

[0051] In the present embodiment, a LED uninterruptible power supply emergency power supply is connected to the DC power supply interface. When the power supply interface is connected to the power supply interface, the first optical coupler U1 is turned on, and the sixth resistor R6 controls the fourth power tube Q4 to be turned on, so as to provide power to the first driver U2. The fourth output frequency of the first driver U2 is a square wave pulse signal with a certain frequency, so as to drive the conduction state of the third power tube Q3. The frequency of the square wave pulse signal is set by the fourth resistor R4, and the pulse width is determined by the power fed back to the second end of the first driver U2 by the fifth resistor R5. The first inductor L1 performs filtering and energy storage, and provides continuous current power supply for the LED module to maintain the current balance of the LED module. The first diode D1 and the fifth capacitor C5 are used to complete the driving of the LED module. When the power supply interface loses power, the first optical coupler U1 is turned off, and the first power supply VCC1 supplies power to the second capacitor C2 through the second resistor R2, and controls the first power supply VCC1 to supply power to the second capacitor C2 through the second resistor R2. A switch tube VT1 is turned on, so that the first power tube Q1, the second power tube Q2 and the second switch tube VT2 are turned on, the battery pack starts to discharge and supplies power to the first driver U2, the fourth power tube Q4 is turned off and the power transmission is stopped, when the power interface is re-connected to the DC power, due to the energy storage of the second capacitor C2, the first switch tube VT1 will be delayed to turn on, at this time the DC power connected to the power interface is transmitted through the first power tube Q1, and the charging device performs DC-DC processing to provide charging power for the battery pack, if the power interface is powered off again before the second capacitor C2 cannot trigger the first switch tube VT1 to turn on, the second capacitor C2 starts to store energy again until the power connected to the power interface is maintained after the power released by the second capacitor C2 cannot trigger the first switch tube VT1 to turn on, the fourth power tube Q4 is turned on again, and the DC power connected to the power interface supplies power to the first driver U2 again.

[0052] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0053] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An LED uninterruptible power supply emergency power supply, characterized in that: The LED uninterruptible power supply emergency power supply includes: a power supply module, a power supply detection module, a power control module, a charging control module, an uninterruptible power supply module and an LED driving module; The power module is used to access direct current power; The power supply detection module is connected to the power supply module, and is used to perform isolation power-off detection on the DC power and output a first control signal when the power is off, and is used to delay processing of the first control signal and delay output of a second control signal; The power control module is connected to the power supply module, the power supply detection module and the LED driving module, and is used to transmit DC power to the LED driving module, and is used to receive the second control signal and stop the transmission of power; The charging control module is connected to the power supply module and the power supply detection module, and is used to receive the second control signal and perform DC-DC regulation on the direct current power to output charging power; The uninterruptible power supply module is connected to the power supply detection module, the charging control module and the LED driving module, and is used to store the charged electric energy and release the stored electric energy, and is used to receive the second control signal and transmit the released electric energy to the LED driving module; The LED driving module is used to perform constant current regulation processing on the electric energy output by the uninterruptible power supply module and the electric energy control module and to perform LED lighting work.

2. The LED uninterruptible power supply emergency power supply according to claim 1, characterized in that: The power supply module includes a power supply interface and a first capacitor; the power supply detection module includes a first resistor, a first optical coupler, a second resistor, a first power supply, a first switch tube, a second capacitor and a third resistor; The first end of the power interface is connected to one end of the first capacitor and to the first end of the first optocoupler through the first resistor, the second end of the first optocoupler, the other end of the first capacitor and the second end of the power interface are all grounded, the third end of the first optocoupler is connected to one end of the second capacitor and the collector of the first switch tube, the power control module, the charging control module and the uninterruptible power supply module are connected and the first power supply and the collector of the first switch tube are connected through the second resistor, and the emitter of the first switch tube is connected to the other end of the second capacitor, the fourth end of the first optocoupler and the ground through the third resistor.

3. The LED uninterruptible power supply emergency power supply according to claim 2, characterized in that: The power control module includes a sixth resistor, a fourth power tube and a second switch tube; The drain of the fourth power tube is connected to the first end of the power interface and is connected to the gate of the fourth power tube and the collector of the second switch tube through the sixth resistor, the emitter interface of the second switch tube, the source of the fourth power tube is connected to the LED driving module, and the base of the second switch tube is connected to the emitter of the first switch tube.

4. The LED uninterruptible power supply emergency power supply according to claim 3, characterized in that: The uninterruptible power supply module includes a second power tube and a battery pack; The gate of the second power tube is connected to the emitter of the first switch tube, the source of the second power tube is connected to the LED driving module, the drain of the second power tube is connected to the first end of the battery pack, and the second end of the battery pack is grounded.

5. The LED uninterruptible power supply emergency power supply according to claim 4, characterized in that: The charging control module includes a first power tube and a charging device; The drain of the first power tube is connected to the first end of the power interface, the source of the first power tube is connected to the input end of the charging device, the ground end of the charging device is grounded, and the output end of the charging device is connected to the first end of the battery pack.

6. The LED uninterruptible power supply emergency power supply according to claim 5, characterized in that: The LED driving module includes a third capacitor, a fourth capacitor, a first driver, a fourth resistor, a third power tube, a first diode, a fifth capacitor, a first inductor, a fifth resistor and an LED module; One end of the third capacitor is connected to the first end of the first driver, the cathode of the first diode, one end of the fifth capacitor, the first end of the LEE module, the source of the second power tube and the source of the fourth power tube. The sixth end, the seventh end and the fifth end of the first driver are all connected to the ground through the fourth capacitor. The eighth end of the first driver is connected to the other end of the third capacitor, the third end of the first driver, one end of the fifth resistor and the ground through the fourth resistor. The fourth end of the first driver is connected to the gate of the third power tube. The second end of the first driver is connected to the other end of the fifth resistor and the source of the third power tube. The drain of the third power tube is connected to the anode of the first diode and the other end of the fifth capacitor and is connected to the second end of the LED module through the first resistor.

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