CN219499588U - LED driving emergency lighting power supply - Google Patents
LED driving emergency lighting power supply Download PDFInfo
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- CN219499588U CN219499588U CN202320308304.9U CN202320308304U CN219499588U CN 219499588 U CN219499588 U CN 219499588U CN 202320308304 U CN202320308304 U CN 202320308304U CN 219499588 U CN219499588 U CN 219499588U
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Abstract
The utility model discloses an LED driving emergency lighting power supply, which comprises: an AC/DC converter provided with first and second DC output bypasses; an illumination DC/DC converter, an input of the illumination DC/DC converter being electrically connected to the first DC output bypass, the illumination DC/DC converter being electrically connected to the lamp; a dimming module electrically connected with the lighting DC/DC converter; the input end of the charging management module is electrically connected with the second direct current output bypass, and the charging management module is electrically connected with the storage battery pack; the emergency switching module is electrically connected with the lighting DC/DC converter and the lamp; the emergency inverter is electrically connected with the storage battery pack and the emergency switching module; and an emergency control module. The LED lamp panel is subjected to dimming, normal power supply and emergency power supply, and meanwhile, the manufacturing cost is lower.
Description
Technical Field
The utility model relates to the technical field of LED illumination power supply equipment, in particular to an LED driving emergency illumination power supply.
Background
Under the condition of normal use, the power supply of the LED illuminating lamp source is connected with the mains supply to realize the power supply of the lamp source, and after the mains supply is disconnected, the lamp source is subjected to emergency power supply through the storage battery to realize an emergency illuminating function.
The existing lamp source realizes normal power supply and emergency power supply by internally arranging a commercial power alternating current driving power supply and a storage battery direct current driving power supply, but the mode of switching between the two relatively independent power supplies is relatively high in manufacturing cost, the performance and the efficiency are relatively general, and the brightness of a lamp panel is obviously reduced after emergency power supply of part of the lamp source, so that emergency illumination is influenced.
Therefore, there is a need for a lighting power supply that can satisfy normal driving and emergency driving while improving power supply efficiency and performance.
Disclosure of Invention
The utility model provides an LED driving emergency lighting power supply for solving one or more problems in the prior art. The utility model adopts the technical proposal for solving the problems that: an LED driven emergency lighting power supply, comprising: the AC/DC converter is electrically connected with the mains supply input end, is provided with two output bypasses and is respectively marked as a first direct current output bypass and a second direct current output bypass;
an illumination DC/DC converter, an input of which is electrically connected to the first DC output bypass, an output of which is electrically connected to the lamp;
a dimming module electrically connected to the lighting DC/DC converter, the dimming module receiving an external dimming signal input;
the input end of the charging management module is electrically connected with the second direct current output bypass, and the charging management module is electrically connected with the storage battery pack;
the emergency switching module is electrically connected with the lighting DC/DC converter and the lamp;
the emergency inverter is electrically connected with the storage battery pack and the emergency switching module;
the emergency control module is electrically connected with the AC/DC converter, the emergency switching module and the emergency inverter.
In some embodiments, the AC/DC converter includes: the device comprises a protective tube, a rectifier bridge, a PWM power supply chip and a transformer, wherein the transformer is provided with two output windings;
the output bypass includes: the output winding, the anti-backflow diode and the energy storage capacitor are connected with one end of the output winding in a grounding mode.
In some embodiments, the charge management module is provided with a charge management DC/DC converter that is controlled by a PWM power supply chip.
In some embodiments, the emergency inverter is provided with an emergency DC/DC boost conversion circuit, the emergency inverter being controlled by a PWM power supply chip.
In some embodiments, the emergency switching module is a mos tube, and a gate of the mos tube is electrically connected to the emergency control module.
In some embodiments, the illumination DC/DC converter is provided with an illumination DC/DC conversion circuit, which is controlled by a PWM power supply chip.
The beneficial value obtained by the utility model is as follows: according to the LED lamp panel driving circuit, the AC/DC converter, the lighting DC/DC converter, the dimming module, the charging management module, the emergency switching module, the emergency inverter, the emergency control module, other components and circuits are connected together, so that the LED lamp panel driving circuit, the LED lamp panel power supply circuit and the LED lamp panel emergency power supply circuit are realized; two output bypasses are arranged through the AC/DC converter, the normal power supply of the LED lamp panel and the charging of the storage battery are realized by matching with the illumination DC/DC converter and the charging management module, and the emergency control module is connected to detect whether the commercial power outage occurs or not so as to switch to emergency power supply in time; the emergency power supply voltage of the LED lamp panel is regulated in real time through the emergency inverter and the emergency control module, so that the high brightness of the LED lamp panel can be maintained, and the use of emergency illumination is ensured; furthermore, on the basis of maintaining the functions, the circuit is more simplified, and the manufacturing cost can be effectively reduced. The practical value of the utility model is greatly improved.
Drawings
FIG. 1 is a schematic block diagram of the present utility model;
FIG. 2 is a schematic diagram of the present utility model;
FIG. 3 is a partial enlarged view I of a schematic diagram of the present utility model;
FIG. 4 is a partial enlarged view II of a schematic diagram of the present utility model;
fig. 5 is an enlarged view III of a portion of a schematic diagram of the present utility model.
Detailed Description
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model briefly described above will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described herein without departing from the spirit or scope of the utility model as defined in the following claims.
As shown in fig. 1-5, the present utility model discloses an LED driving emergency lighting power supply, which includes: the AC/DC converter is electrically connected with the mains supply input end, is provided with two output bypasses and is respectively marked as a first direct current output bypass and a second direct current output bypass;
an illumination DC/DC converter, an input of which is electrically connected to the first DC output bypass, an output of which is electrically connected to the lamp;
a dimming module electrically connected to the lighting DC/DC converter, the dimming module receiving an external dimming signal input;
the input end of the charging management module is electrically connected with the second direct current output bypass, and the charging management module is electrically connected with the storage battery pack;
the emergency switching module is electrically connected with the lighting DC/DC converter and the lamp;
the emergency inverter is electrically connected with the storage battery pack and the emergency switching module;
the emergency control module is electrically connected with the AC/DC converter, the emergency switching module and the emergency inverter.
It should be noted that, the emergency control module is generally an MCU or other power control chip and a supporting circuit, and is used for controlling the emergency power supply. The emergency control module is electrically connected with the charging management module and the PWM power supply chip to detect the voltage of the storage battery pack, or independently detects the voltage of the storage battery pack to determine the electric quantity of the storage battery pack, so as to determine whether the storage battery pack is charged or not, and then the emergency control module is matched with the emergency inverter to boost.
Specifically, as shown in fig. 2 and 3, the AC/DC converter includes: the transformer T101 is provided with two output windings; the output bypass includes: one end of the output winding is grounded, and the reverse flow prevention diode D101/D102 and the energy storage capacitor C101/C102 are connected with the other end of the output winding. The emergency control module is connected with any one or two output bypasses through an optical coupler U102 to control a PWM power supply chip U101 in the AC/DC converter, so that emergency AC power supply detection is realized. And converting the commercial power into a plurality of groups of direct current outputs through the AC/DC converter so as to ensure the normal power supply of the lamp panel and the charging of the storage battery.
The anti-backflow diode D101 is used for preventing the energy storage capacitor C101 from charging the output winding and generating a current branch when the storage battery pack supplies power to the lamp panel in an emergency mode, so that electric energy is saved, and the energy storage capacitor C101 is mainly used for storing the electric energy generated by the output winding and releasing the electric energy to the lamp panel after power failure so as to fully utilize the electric energy generated by the output winding.
Specifically, as shown in fig. 2 and 5, in the normal power supply state of the mains supply, a user may control the lighting DC/DC converter through an external controller, so as to control the on/off of the light under normal lighting, where the light coupler U401 is used to control the PWM power supply chip U201 in the lighting DC/DC converter. And similarly, the external light modulator is communicated with the light modulating module to control the PWM power supply chip U201 in the lighting DC/DC converter, so that light modulation is realized.
Specifically, as shown in fig. 2 and 4, the charge management module is provided with a charge management DC/DC converter, and the charge management DC/DC converter is controlled by a PWM power supply chip. In fig. 4, a voltage regulating circuit is formed by a MOS transistor Q701, an inductor L701, and a diode D701 in the charge management module, and a gate of the MOS transistor Q701 is electrically connected with a PWM power chip, so as to realize adjustment of suitable voltage and current to charge the storage battery.
Similarly, the emergency inverter is provided with an emergency DC/DC boost conversion circuit (comprising an inductor, an MOS tube and the like), and the emergency inverter is controlled by the PWM power supply chip so as to boost the output voltage of the storage battery, and further provide proper working voltage and current for the lamp panel.
Specifically, as shown in fig. 5, the emergency switching module is a mos tube Q301, and a gate of the mos tube Q301 is electrically connected with the emergency control module, so as to control the on-off of the power supply loop of the storage battery pack, and further control the emergency power supply.
The lighting DC/DC converter is provided with a lighting DC/DC conversion circuit, that is, a circuit formed by connecting a diode D201, an inductor L201 and a MOS transistor Q201 in fig. 5, wherein a gate of the MOS transistor Q201 is connected with a PWM power chip U201, and the lighting DC/DC converter is controlled by the PWM power chip U201 and is used for converting an output DC voltage so as to provide a proper working voltage and current for a lamp panel and receiving a dimming signal to perform dimming.
When the battery pack is used, under the condition that the commercial power is normally supplied, the lamp panel supplies power through the commercial power, and the storage battery pack is charged during the period; under the condition that the mains supply is disconnected, the lamp panel supplies power through the storage battery pack, and meanwhile, no matter the mains supply is disconnected or normal, the lighting DC/DC converter can realize dimming control and on-off control of the lamp panel according to external dimming signals and control signals.
In summary, the driving, power supply and emergency power supply of the LED lamp panel are realized by connecting the AC/DC converter, the lighting DC/DC converter, the dimming module, the charging management module, the emergency switching module, the emergency inverter, the emergency control module, other components and circuits together; two output bypasses are arranged through the AC/DC converter, the normal power supply of the LED lamp panel and the charging of the storage battery are realized by matching with the illumination DC/DC converter and the charging management module, and the emergency control module is connected to detect whether the commercial power outage occurs or not so as to switch to emergency power supply in time; the emergency power supply voltage of the LED lamp panel is regulated in real time through the emergency inverter and the emergency control module, so that the high brightness of the LED lamp panel can be maintained, and the use of emergency illumination is ensured; furthermore, on the basis of maintaining the functions, the circuit is more simplified, and the manufacturing cost can be effectively reduced.
The foregoing examples are merely representative of one or more embodiments of the present utility model and are described in more detail and are not to be construed as limiting the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of the utility model should be assessed as that of the appended claims.
Claims (7)
1. An LED driven emergency lighting power supply, comprising: the AC/DC converter is electrically connected with the mains supply input end, is provided with two output bypasses and is respectively marked as a first direct current output bypass and a second direct current output bypass;
an illumination DC/DC converter, an input of which is electrically connected to the first DC output bypass, an output of which is electrically connected to the lamp;
a dimming module electrically connected to the lighting DC/DC converter, the dimming module receiving an external dimming signal input;
the input end of the charging management module is electrically connected with the second direct current output bypass, and the charging management module is electrically connected with the storage battery pack;
the emergency switching module is electrically connected with the lighting DC/DC converter and the lamp;
the emergency inverter is electrically connected with the storage battery pack and the emergency switching module;
the emergency control module is electrically connected with the AC/DC converter, the emergency switching module and the emergency inverter.
2. The LED driven emergency lighting power supply of claim 1, wherein the AC/DC converter comprises: the transformer is provided with two output windings.
3. The LED driven emergency lighting power supply of claim 2, wherein said output bypass comprises: the output winding, the anti-backflow diode and the energy storage capacitor are connected with one end of the output winding in a grounding mode.
4. An LED driven emergency lighting power supply according to claim 1, wherein the charge management module is provided with a charge management DC/DC converter, which is controlled by a PWM power supply chip.
5. An LED driven emergency lighting power supply as defined in claim 1, wherein the emergency inverter is provided with an emergency DC/DC boost converter circuit, the emergency inverter being controlled by a PWM power supply chip.
6. The LED driven emergency lighting power supply of claim 1, wherein the emergency switching module is a mos tube, and the gate of the mos tube is electrically connected to the emergency control module.
7. An LED driven emergency lighting power supply as defined in claim 1, wherein the lighting DC/DC converter is provided with a lighting DC/DC conversion circuit, the lighting DC/DC converter being controlled by a PWM power supply chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320308304.9U CN219499588U (en) | 2023-02-23 | 2023-02-23 | LED driving emergency lighting power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320308304.9U CN219499588U (en) | 2023-02-23 | 2023-02-23 | LED driving emergency lighting power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219499588U true CN219499588U (en) | 2023-08-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320308304.9U Active CN219499588U (en) | 2023-02-23 | 2023-02-23 | LED driving emergency lighting power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219499588U (en) |
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2023
- 2023-02-23 CN CN202320308304.9U patent/CN219499588U/en active Active
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