CN216752176U - Quick discharge circuit and wisdom lamp pole - Google Patents
Quick discharge circuit and wisdom lamp pole Download PDFInfo
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- CN216752176U CN216752176U CN202123082768.2U CN202123082768U CN216752176U CN 216752176 U CN216752176 U CN 216752176U CN 202123082768 U CN202123082768 U CN 202123082768U CN 216752176 U CN216752176 U CN 216752176U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model relates to a quick discharge circuit is applied to LED drive power supply, include: a power supply terminal; the input end of the sampling circuit is respectively connected with a power supply end and a mains supply, the power supply end is connected to the input end of the sampling circuit through a rectifier bridge, and the grounding end of the sampling circuit is grounded; the input end of the discharge control circuit is connected with the output end of the sampling circuit, and the grounding end of the discharge control circuit is grounded; the input end of the energy storage circuit is respectively connected with the external power supply and the output end of the discharge control circuit; the grounding end of the energy storage circuit is grounded; and the input end of the power supply circuit is connected with the output end of the energy storage circuit, and the grounding end of the power supply circuit is grounded. The utility model discloses still relate to a wisdom lamp pole, including quick discharge circuit. The utility model discloses improved drive power supply's reliability greatly, also protected lamps and lanterns, improved product life, alleviateed the application and the maintenance at terminal, reduced the administrative cost of technical support department.
Description
Technical Field
The utility model relates to a LED technical field especially relates to a quick discharge circuit and wisdom lamp pole.
Background
As a novel energy-saving illumination product, under the situation that global energy is increasingly tense and under the large background of the national plan of energy conservation and emission reduction, the LED lamp has various characteristics which are not possessed by the traditional illumination product, such as: high luminous efficiency, high energy saving, long service life and no pollution, so that the LED lamp is an ideal lighting device.
The LED driving power supply is used as a core component of the whole lighting product, and the performance of the LED driving power supply directly determines the reliability, the comfort and the service life of the lighting product. The existing outdoor lighting equipment, such as night scene lighting and LED lighting, is used for most of driving power supplies of intelligent lamp poles, and adopts a design with an auxiliary source, wherein an important electrical index of the driving power supply is that output current overshoot is guaranteed within a reasonable range, and due to the existence of the auxiliary source, after AC input is turned off, the output of the auxiliary source cannot fall down immediately, but the time is kept for 3-5 s, and the power supply of an IC still exists in the period of time, so that the IC cannot be reset. When the IC is started for the second time, the IC cannot be soft-started, risks are brought, meanwhile, output current overshoot can exceed the standard, too high current spikes bring damages to the lamp, and the service life is influenced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in providing a solve LED drive power supply input outage back, quick discharge circuit and wisdom lamp pole of secondary start output current problem of overshooting.
The utility model provides a technical scheme that its technical problem adopted is: a quick discharge circuit is constructed and applied to an LED driving power supply, and comprises: a power supply terminal;
the input end of the sampling circuit is respectively connected with the power supply end and the mains supply, the power supply end is connected to the input end of the sampling circuit through a rectifier bridge, and the grounding end of the sampling circuit is grounded;
the input end of the discharge control circuit is connected with the output end of the sampling circuit, and the grounding end of the discharge control circuit is grounded;
the input end of the energy storage circuit is respectively connected with an external power supply and the output end of the discharge control circuit; the grounding end of the energy storage circuit is grounded;
and the input end of the power supply circuit is connected with the output end of the energy storage circuit, and the grounding end of the power supply circuit is grounded.
Preferably, the sampling circuit comprises a first diode D11, a first capacitor CBB5, a resistor group and a fourth resistor R61;
one path of the power supply end is connected with the first capacitor CBB5 through the first diode D11 and is grounded, and the other path of the power supply end is grounded through the resistor group and the fourth resistor R61 in sequence;
the first end of the resistor group is connected with the second end of the first diode D11, one path of the second end of the resistor group is grounded through the fourth resistor R61, and the other path of the second end of the resistor group is connected to the input end of the discharge control circuit.
Preferably, the discharge control circuit comprises a first transistor Q8, a fifth resistor R3, a sixth resistor R4, a third diode D2 and a second transistor Q1;
the base electrode of the first triode Q8 is connected with the output end of the sampling circuit, the collector electrode of the first triode Q8 is connected with the first end of the fifth resistor R3, one path of the second end of the fifth resistor R3 is grounded through the sixth resistor R4, and the other path of the second end of the fifth resistor R3 is connected with the base electrode of the second triode Q1;
the first end of the third diode D2 is connected to the emitter of the first transistor Q8, and the second end of the third diode D2 is connected to the collector of the second transistor Q1.
Preferably, the discharge control circuit further comprises a second capacitor C1; the second end of the fifth resistor R3 is grounded through the second capacitor C1.
Preferably, the discharge control circuit further includes a second diode D3;
the first end of the second diode D3 is connected with the output end of the sampling circuit, one path of the second end of the second diode D3 is connected to the emitter of the first triode Q8, one path is connected to the collector of the second triode Q1 through the third diode D2, and the other path is connected with the input end of the power supply circuit.
Preferably, the energy storage circuit includes a third capacitor CE1, the first end of the third capacitor CE1 is connected to an external power supply, the first end of the third capacitor CE1 is connected to an output terminal of the discharge control circuit, the second end of the third capacitor CE1 is grounded, and the other end of the third capacitor CE1 is connected to an input terminal of the power supply circuit.
Preferably, the power supply circuit comprises a third transistor Q9, a seventh resistor R2, an eighth resistor R1, a fourth capacitor C39, a power supply unit and a fourth diode D1;
an emitter of the third triode Q9 is connected with a first end of the third capacitor CE 1; a first end of the seventh resistor R2 is connected with the output end of the sampling circuit, and a second end of the seventh resistor R2 is connected with the base of the third triode Q9; a first end of the eighth resistor R1 is connected to the base of the third transistor Q9, and a second end of the eighth resistor R1 is grounded;
the first end of the power supply unit is connected with the collector of the third triode Q9 through the fourth diode D1, and the second end of the power supply unit is grounded.
Preferably, the power supply circuit further comprises a fourth capacitor C39, a first end of the fourth capacitor C39 is connected to the base of the third transistor Q9, and a second end of the fourth capacitor C39 is grounded.
Preferably, the power supply circuit further comprises a ninth resistor R5;
a first end of the ninth resistor R5 is connected to the collector of the third transistor Q9, and a second end of the ninth resistor R5 is connected to a first end of the fourth diode D1.
The utility model discloses a wisdom lamp pole has still been constructed, including above-mentioned quick discharge circuit.
Implement the utility model discloses following beneficial effect has: after the input of the LED driving power supply is powered off, the VCC capacitor is rapidly discharged to solve the problems of output current overshoot of the secondary startup, PF value abnormality possibly caused by rapid switching, and the like due to the fact that the IC cannot be reset and soft start. The reliability of the driving power supply is greatly improved, the lamp is protected, the service life of the product is prolonged, the application and maintenance of the terminal are reduced, and the management cost of a technical support department is reduced.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic circuit diagram of the fast discharge circuit of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention, but do not indicate that the device or element referred to must have a specific direction, and thus, should not be construed as limiting the present invention.
It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
As shown in fig. 1, for the utility model discloses a quick discharge circuit is applied to LED drive power supply, and this quick discharge circuit includes: and the power supply end is specifically connected with the L end and the N end of the power supply line.
The input end of the sampling circuit 1 is respectively connected with a power supply end and a mains supply, specifically, the power supply end is connected to the input end of the sampling circuit 1 through a rectifier bridge BD1, and the grounding end of the sampling circuit 1 is grounded;
the input end of the discharge control circuit 2 is connected with the output end of the sampling circuit 1, and the grounding end of the discharge control circuit 2 is grounded;
the input end of the energy storage circuit 3 is respectively connected with an external power supply VCC and the output end of the discharge control circuit 2; the grounding end of the energy storage circuit 3 is grounded;
and the input end of the power supply circuit 4 is connected with the output end of the energy storage circuit 3, and the grounding end of the power supply circuit 4 is grounded.
Further, the sampling circuit 1 includes a first diode D11, a first capacitor CBB5, a resistor group and a fourth resistor R61;
one path of a power supply end is connected with the first capacitor CBB5 through the first diode D11 and is grounded, and the other path of the power supply end is grounded through the resistor group and the fourth resistor R61 in sequence;
the first end of the resistor group is connected with the second end of the first diode D11, one path of the second end of the resistor group is grounded through the fourth resistor R61, and the other path is connected to the input end of the discharge control circuit 2.
Further, the battery pack comprises a first resistor R58, a second resistor R59, a third resistor R60; the power supply end is connected with the first capacitor CBB5 through a first diode D11 in one path and is grounded in the other path through a first resistor R58, a second resistor R59, a third resistor R60 and a fourth resistor R61 in sequence;
specifically, the first end of the third resistor R60 is connected to the second resistor R59, the second end of the third resistor R60 is grounded through the fourth resistor R61, and the other end is connected to the input end of the discharge control circuit 2.
The first diode D11 plays a role of rectification, the first capacitor CBB5 plays a role of filtering, and the first resistor R58, the second resistor R59, the third resistor R60 and the fourth resistor R61 play a role of voltage division. Understandably, considering the problems of cost and the like, the number of the resistors can be adjusted according to the actual situation, and one large resistor can be adopted to replace a plurality of series resistors.
Further, the discharge control circuit 2 includes a first transistor Q8, a fifth resistor R3, a sixth resistor R4, a third diode D2, and a second transistor Q1. Specifically, the first transistor Q8 is a PNP transistor, and the second transistor Q1 is an NPN transistor.
One path of the input end of the discharge control circuit 2 is grounded through a first triode Q8, a fifth resistor R3 and a sixth resistor R4; the base electrode of a first triode Q8 is connected with the output end of the sampling circuit 1, the collector electrode of the first triode Q8 is connected with the first end of a fifth resistor R3, one path of the second end of the fifth resistor R3 is grounded through a sixth resistor R4, and the other path of the second end of the fifth resistor R3 is connected with the base electrode of a second triode Q1;
a first end of a third diode D2 is connected with an emitter of the first triode Q8, and a second end of a third diode D2 is connected with a collector of the second triode Q1; the emitter of the second transistor Q1 is grounded.
Further, the discharge control circuit 2 further includes a second capacitor C1; the second terminal of the fifth resistor R3 is connected to ground through the second capacitor C1.
Further, the discharge control circuit 2 further includes a second diode D3 for protecting the first transistor Q8 from breakdown; the first end of the second diode D3 is connected with the output end of the sampling circuit 1, the second end of the second diode D3 is connected to the emitter of the first triode Q8, the first end of the second diode D3832 is connected to the collector of the second triode Q1 through the third diode D2, and the other end of the second diode D3832 is connected with the input end of the power supply circuit 4.
Further, the energy storage circuit 3 includes a third capacitor CE1, the first end of the third capacitor CE1 is connected to the external power VCC, the output end of the discharge control circuit 2 is connected to one of the first end and the second end of the third capacitor CE1, the other end of the third capacitor CE is connected to the input end of the power supply circuit 4, and the second end of the third capacitor CE1 is grounded. The energy storage circuit can realize charging or discharging, and when the energy storage element third capacitor CE1 in the energy storage circuit is in a discharging state, a reset signal is output, so that the IC can be reset.
Further, the power supply circuit 4 includes a third transistor Q9, a seventh resistor R2, an eighth resistor R1, a fourth capacitor C39, a power supply unit, and a fourth diode D1; the third capacitor CE1 is a VCC supply capacitor, and the third transistor Q9 is an NPN transistor.
An emitter of the third triode Q9 is connected with a first end of the third capacitor CE 1; the first end of the seventh resistor R2 is connected with the output end of the sampling circuit 1, and the second end of the seventh resistor R2 is connected with the base electrode of the third triode Q9; the first end of the eighth resistor R1 is connected with the base of the third triode Q9, and the second end of the eighth resistor R1 is grounded;
the first end of the power supply unit is connected with the collector of the third triode Q9 through a fourth diode D1, and the second end of the power supply unit is grounded.
Furthermore, the power supply circuit 4 further includes a fourth capacitor C39, a first end of the fourth capacitor C39 is connected to the base of the third transistor Q9, and a second end of the fourth capacitor C39 is grounded.
Furthermore, the power supply circuit 4 further includes a ninth resistor R5 for limiting current and protecting the third transistor Q9; the first end of the ninth resistor R5 is connected to the collector of the third triode Q9, the second end of the ninth resistor R5 is connected to the first end of the fourth diode D1, and the second end of the fourth diode D1 is grounded through the power supply unit.
Further, the power supply unit comprises a secondary winding coil, and a first end of the secondary winding coil and a collector of the third triode Q9 are connected with a second end of the secondary winding coil and grounded.
Further, the utility model discloses still include a wisdom lamp pole, including above-mentioned arbitrary quick discharge circuit for solve the lamp pole secondary start output current problem of overshooting.
The working principle of the fast discharge circuit is explained as follows:
when the L/N end of the power supply is not electrified, the first triode Q8 is conducted, and the third capacitor CE1 is in a discharging state; when the L/N end is connected with the mains supply, the bridge pile enters a sampling circuit, the sampling voltage is rectified by a first diode D11 and filtered by a first capacitor CBB5 to obtain a smooth direct-current voltage, the smooth direct-current voltage is divided and then is supplied to a first triode Q8, at the moment, the first triode Q8 is in a cut-off state, and a second triode Q1 is not conducted; conducting the third transistor Q9 to charge the third capacitor CE 1; when the L/N end is powered off, the base of the third triode Q9 is at a low level and is in a cut-off state, and the power supply circuit of the third capacitor CE1 is disconnected; meanwhile, since the base voltage of the first transistor Q8 is pulled low by the fourth resistor R61, the first transistor Q8 is turned on, so that the second transistor Q1 is turned on, and the third diode D2 is turned on, thereby rapidly discharging the third capacitor CE 1. When the L/N end is electrified again, the process is repeated. Because the third capacitor CE1 is discharged rapidly, the IC can be reset, the secondary starting can still realize soft starting, the overshoot of the output current is avoided, and the abnormal working state of the IC is also prevented.
The utility model discloses the realization principle is simple, through increasing first triode Q8, second triode Q1, third triode Q9, second diode D3 and a plurality of chip resistor electric capacity can realize VCC electric capacity fast discharge. The reliability of the driving power supply is greatly improved, the lamp is protected, the service life of the product is prolonged, the application and maintenance of the terminal are reduced, and the management cost of a technical support department is reduced.
It should be understood that the above examples only represent the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but should not be construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. The utility model provides a quick discharge circuit, is applied to LED drive power supply which characterized in that includes: a power supply terminal;
the input end of the sampling circuit is respectively connected with the power supply end and the mains supply, the power supply end is connected to the input end of the sampling circuit through a rectifier bridge, and the grounding end of the sampling circuit is grounded;
the input end of the discharge control circuit is connected with the output end of the sampling circuit, and the grounding end of the discharge control circuit is grounded;
the input end of the energy storage circuit is respectively connected with an external power supply and the output end of the discharge control circuit; the grounding end of the energy storage circuit is grounded;
and the input end of the power supply circuit is connected with the output end of the energy storage circuit, and the grounding end of the power supply circuit is grounded.
2. The fast discharge circuit of claim 1, wherein the sampling circuit comprises a first diode D11, a first capacitor CBB5, a resistor bank, and a fourth resistor R61;
one path of the power supply end is connected with the first capacitor CBB5 through the first diode D11 and is grounded, and the other path of the power supply end is grounded through the resistor group and the fourth resistor R61 in sequence;
the first end of the resistor group is connected with the second end of the first diode D11, one path of the second end of the resistor group is grounded through the fourth resistor R61, and the other path of the second end of the resistor group is connected to the input end of the discharge control circuit.
3. The fast discharge circuit of claim 2, wherein the discharge control circuit comprises a first transistor Q8, a fifth resistor R3, a sixth resistor R4, a third diode D2, and a second transistor Q1;
the base electrode of the first triode Q8 is connected with the output end of the sampling circuit, the collector electrode of the first triode Q8 is connected with the first end of the fifth resistor R3, one path of the second end of the fifth resistor R3 is grounded through the sixth resistor R4, and the other path of the second end of the fifth resistor R3 is connected with the base electrode of the second triode Q1;
the first end of the third diode D2 is connected to the emitter of the first transistor Q8, and the second end of the third diode D2 is connected to the collector of the second transistor Q1.
4. The fast discharge circuit of claim 3 wherein said discharge control circuit further comprises a second capacitor C1; the second end of the fifth resistor R3 is grounded through the second capacitor C1.
5. The fast discharge circuit of claim 4 wherein said discharge control circuit further comprises a second diode D3;
the first end of the second diode D3 is connected with the output end of the sampling circuit, one path of the second end of the second diode D3 is connected to the emitter of the first triode Q8, one path is connected to the collector of the second triode Q1 through the third diode D2, and the other path is connected with the input end of the power supply circuit.
6. The fast discharging circuit of claim 3, wherein the energy storage circuit comprises a third capacitor CE1, a first end of the third capacitor CE1 is connected to an external power source, one end of the third capacitor CE1 is connected to the output end of the discharging control circuit, the other end of the third capacitor CE1 is connected to the input end of the power supply circuit, and a second end of the third capacitor CE1 is connected to ground.
7. The fast discharge circuit of claim 6, wherein the power supply circuit comprises a third transistor Q9, a seventh resistor R2, an eighth resistor R1, a fourth capacitor C39, a power supply unit, and a fourth diode D1;
the emitter of the third transistor Q9 is connected with the first end of the third capacitor CE 1; a first end of the seventh resistor R2 is connected with the output end of the sampling circuit, and a second end of the seventh resistor R2 is connected with the base of the third triode Q9; a first end of the eighth resistor R1 is connected to the base of the third transistor Q9, and a second end of the eighth resistor R1 is grounded;
the first end of the power supply unit is connected with the collector of the third triode Q9 through the fourth diode D1, and the second end of the power supply unit is grounded.
8. The fast discharge circuit of claim 7, wherein the power supply circuit further comprises a fourth capacitor C39, a first terminal of the fourth capacitor C39 is connected to the base of the third transistor Q9, and a second terminal of the fourth capacitor C39 is connected to ground.
9. The fast discharge circuit of claim 7 wherein said power supply circuit further comprises a ninth resistor R5;
a first end of the ninth resistor R5 is connected to the collector of the third transistor Q9, and a second end of the ninth resistor R5 is connected to a first end of the fourth diode D1.
10. A smart light pole comprising the fast discharge circuit of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123082768.2U CN216752176U (en) | 2021-12-09 | 2021-12-09 | Quick discharge circuit and wisdom lamp pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123082768.2U CN216752176U (en) | 2021-12-09 | 2021-12-09 | Quick discharge circuit and wisdom lamp pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216752176U true CN216752176U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123082768.2U Active CN216752176U (en) | 2021-12-09 | 2021-12-09 | Quick discharge circuit and wisdom lamp pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216752176U (en) |
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2021
- 2021-12-09 CN CN202123082768.2U patent/CN216752176U/en active Active
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