CN109451623B - Control method and circuit of low-power external power supply adaptive to built-in drive of lamp - Google Patents
Control method and circuit of low-power external power supply adaptive to built-in drive of lamp Download PDFInfo
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- CN109451623B CN109451623B CN201811192785.1A CN201811192785A CN109451623B CN 109451623 B CN109451623 B CN 109451623B CN 201811192785 A CN201811192785 A CN 201811192785A CN 109451623 B CN109451623 B CN 109451623B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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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]
Abstract
The invention discloses a control method and a circuit of a low-power external power supply adaptive to built-in drive of a lamp, which comprises a commercial power, a standby power supply, a switch control unit, a drive unit and an LED load, wherein the power of the standby power supply is less than that of the LED load, the standby power supply comprises a standby battery and a boost unit, the commercial power is connected with the standby battery, the commercial power at the output end of the boost unit is connected with the input end of the drive unit through the switch control unit, under the condition of commercial power failure, the output voltage of the boost unit is more than or equal to the starting voltage of the drive unit at the moment when the switch control unit is conducted with the drive unit, the drive unit is started, the LED load works, then the boost unit is forcibly pulled down to lower the voltage, the limited energy provided by the drive unit and the standby power supply is in self-adaptive balance to achieve the law of energy conservation, and the LED load of the drive unit continues to work under the, the production cost is reduced and the endurance capacity of the emergency power supply is improved.
Description
Technical Field
The invention relates to the field of emergency lighting, in particular to a control method and a circuit of a low-power external power supply adaptive to built-in driving of a lamp.
Background
The emergency lamp is mainly used for providing illumination after a normal illumination power supply is cut off or a power grid loses power. It is often used in factories, mines, institutions, schools, buildings and tunnels. The emergency lighting system used in China is mainly of an independent control type with a power supply, a normal power supply is connected with a common lighting power supply loop and charges a battery of an emergency lamp at ordinary times, when the normal power supply is cut off, the standby power supply (battery) automatically supplies power, the emergency lamp in the form can only work under the emergency condition, the emergency lamp in the other form has normal lighting power, the normal lighting and the emergency are integrated, at the moment, an emergency power supply is generally externally connected to the exterior of the emergency lamp, the emergency lamp in the form of the emergency lamp generally needs to connect a mains supply and the emergency power supply with a built-in driving module of the lamp respectively, wiring is complex, control is inconvenient, and most importantly, under normal lighting and emergency conditions, the requirements for the luminosity of the lamp are different, and the requirement for the luminosity of the lamp is higher during normal lighting, so that the power of the emergency lamp is required to be higher, and the requirement for normal illumination is met; when under emergency situation, it mainly plays be emergent effect, only need the emergency light luminance of low power to satisfy, but current emergency light, can normally start under emergency situation in order to guarantee emergency light, the power when all saying standby power source's power adaptation emergency light normal lighting, it is extravagant to cause under the emergency situation, high in production cost and emergency power source's duration is low not enough, and in the prior art, in order to satisfy the different demands under normal lighting and the emergency situation, adopt the form of independent emergency light usually, but it has the multiple lamps and lanterns of production and increases the installation control, the high problem of on the other hand manufacturing cost.
Disclosure of Invention
Aiming at the defects in the technology, the invention provides a control method and a circuit of a low-power external power supply adaptive to the built-in drive of a lamp, which can enable an LED load to work in a low-power standby battery state in an emergency state and save the production cost.
In order to achieve the above object, the present invention provides a control method of a low-power external power supply adapted to a built-in driver of a lamp, wherein the power of a standby battery is smaller than the power of an LED load, the method comprising:
judging whether the power supply state of the LED load is normal or not, and if the power supply state is normal, conducting the switch control unit with the commercial power, conducting the commercial power with the driving unit, and then currently in a common lighting mode; if the power supply state is abnormal, the switch control unit is conducted with the boost unit, the output end of the boost unit is conducted with the input end of the driving unit, and the emergency lighting mode is entered;
in an emergency lighting mode, the output voltage of the boost unit is instantaneously greater than or equal to the starting voltage of the driving unit, so that the driving unit is started, and the LED load emits light;
after the start is finished, the output power of the boost unit input by the standby battery is smaller than the output power of the driving unit connected with the output end of the boost unit, the output voltage of the boost unit is forcibly pulled down, and at the moment, the output unit of the boost unit is smaller than the starting voltage of the driving unit.
The input end of the driving unit inputs output voltage which is lower than starting voltage from the boost unit, the limited energy provided by the driving unit and the standby battery achieves self-adaptive balance, the energy conservation law is achieved, and the driving unit works under the condition that the power of the driving unit is less than or equal to the low power of the standby battery.
In the step of judging the power supply state of the LED load, specifically, when the commercial power is normally supplied, the electromagnetic relay adsorbs the switch, and the commercial power is conducted with the driving unit; when the commercial power is cut off, the electromagnetic relay is not electrified, the switch is connected with the boost unit, and then the output end of the boost unit is conducted with the input end of the driving unit.
When the emergency lighting mode is used, the output voltage of the boost unit is instantaneously greater than or equal to the starting voltage of the driving unit, the driving unit is started, and the LED load emits light, wherein the method specifically comprises the following steps: and entering an emergency lighting mode, the standby battery provides direct current, the inductor charges the capacitor C5, the voltage at two ends of the capacitor C5 is increased, and the output voltage of the boost unit is greater than or equal to the starting voltage, so that the driving unit is started and the LED load works.
After the start is completed, the output power of the boost unit input by the standby battery is smaller than the output power of the driving unit connected with the output end of the boost unit, the output voltage of the boost unit is forcibly pulled down, and at the moment, the output voltage of the boost unit is smaller than the start voltage in the step, specifically: after the start-up is completed, the LED load of the driving unit outputs the starting voltage, so that the mos tube is conducted, the power of the input end of the boost unit is smaller than that of the output end of the boost unit, and the output voltage of the boost unit is smaller than the starting voltage.
The emergency battery further comprises an energy storage capacitor C1 and a filter capacitor C2, wherein the energy storage capacitor C1 and the filter capacitor C2 are respectively connected in parallel to two ends of the emergency battery.
The invention also provides a low-power external power supply circuit adaptive to the built-in drive of the lamp, which comprises a commercial power supply, a standby power supply, a switch control unit, a drive unit and an LED load, wherein the power of the standby power supply is smaller than that of the LED load; when the mains supply is powered off, the switch control unit enables the output end of the boost unit to be connected with the input end of the driving unit, the instantaneous output voltage of the boost unit is larger than or equal to the starting voltage of the driving unit, the driving unit is enabled to start, the LED load works, at the moment, the input power of the driving unit is larger than the output power of the standby battery, and the boost unit is forced to be pulled down to enable the output voltage to be smaller than the starting voltage of the driving unit; and then the limited energy provided by the driving unit and the standby battery achieves self-adaptive balance, and the energy conservation law is achieved, namely the driving unit works under the condition that the low power of the standby battery is less than or equal to the low power of the standby battery.
Wherein, the switch control unit includes electromagnetic relay and the switch by electromagnetic relay control, during the commercial power circular telegram, electromagnetic relay adsorbs during the switch, switch and mains connection, during the commercial power disconnection, electromagnetic relay outage, the switch with boost unit connection.
The boost unit comprises a capacitor C5, an inductor and a diode which are sequentially connected, the output end of the standby battery is connected with the input end of the inductor, the diode is connected with the input end of the driving unit, and the capacitor C5 is connected between the diode and the driving unit in parallel.
The boost unit further comprises a mos tube, a control end of the mos tube is connected with an output end of the driving unit, and the capacitor C5 is connected in parallel between the diode and the connection of the mos tube and the driving unit.
The standby power supply is characterized by further comprising an energy storage capacitor C1 and a filter capacitor C2, wherein the energy storage capacitor C1 and the filter capacitor C2 are respectively connected in parallel to two ends of the standby battery.
The invention has the beneficial effects that: compared with the prior art, the control method and the circuit thereof for the low-power external power supply adaptive to the built-in drive of the lamp adopt the switch control circuit to control the working state of the drive unit, the commercial power and the standby power supply are respectively connected with the switch control unit, the commercial power and the standby power supply are not directly connected with the drive unit but are connected with the drive unit through the switch control unit, the wiring is simple, the power of the standby power supply is set to be less than the power of an LED load, and the standby power supply comprises a standby battery and a boost unit, so that the boost unit outputs voltage which is more than or equal to the starting voltage of the drive unit at the moment when the switch control unit is conducted with the drive unit under the condition of commercial power failure, the drive unit is started, the LED load works, the boost unit is forcibly pulled to be low voltage due to the unbalanced power at two ends of the boost unit, and the output voltage of the boost unit is less than the starting voltage of the drive unit, at the moment, the limited energy provided by the driving unit and the standby power supply reaches self-adaptive balance to reach the law of energy conservation, and then the LED load of the driving unit continues to work under the condition of low power, so that the production cost is reduced, and the cruising ability of the emergency power supply is improved.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a circuit diagram of a switch control unit of the present invention;
FIG. 3 is a circuit diagram of a backup power supply and boost unit of the present invention;
FIG. 4 is a flow chart of a control method of the present invention.
The main element symbols are as follows:
1. commercial power 2, standby power supply
3. Switch control unit 4 and drive unit
5. LED load 21 and backup battery
22. boost unit.
Detailed Description
In order to more clearly describe the present invention, the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, the low-power external power circuit adapted to the built-in driving of the lamp of the present invention includes a commercial power 1, a standby power 2, a switch control unit 3, a driving unit 4 and an LED load 5, where the power of the standby power 2 is smaller than the power of the LED load 5, the standby power 2 includes a standby battery 21 and a boost unit 22, the commercial power 1 is connected to the standby battery 21, it should be understood that the standby power 2 further includes a filtered dc power 23 and a charging unit 24, and the commercial power 1, the filtered dc power 23, the charging unit 24 and the standby battery 21 are sequentially connected, which is a conventional option, the boost unit 22 is connected to the standby battery 21 to form a discharge start-up loop, the boost unit 22 and the commercial power 1 are connected to the driving unit 4 through the switch control unit 3, the boost unit 22 can form a closed power supply loop with the driving unit 4 and the LED load 5, so that in the case of commercial power outage, in the moment that the switch control unit 3 and the driving unit 4 are conducted, the output voltage of the boost unit 22 is greater than or equal to the starting voltage of the driving unit 4, the driving unit 4 is enabled to be started, the LED load 5 works, because the power at the two ends of the boost unit 22 is unbalanced, the boost unit 22 is forced to pull down the voltage, the output voltage of the boost unit 22 is lower than the starting voltage of the driving unit 4, the driving unit 4 and the limited energy provided by the standby power supply 2 achieve self-adaptive balance, the law of energy conservation is reached, and then the LED load 5 of the driving unit 4 continues to work under the condition of low power, the production cost is reduced, and the cruising ability of the emergency power supply is improved.
In this embodiment, referring to fig. 2-3, the switch control unit 3 includes an electromagnetic relay and a switch controlled by the electromagnetic relay, for example, the L terminal and the N terminal of fig. 2 are connected to the utility power, the 90V + and 90V interfaces are connected to the boost unit 22, the 12V in fig. 2 is that the utility power is the power supply terminal of the electromagnetic relay, wherein OUT-and OUT + are connected to the driving unit 4, when the utility power is powered on, the electromagnetic relay adsorbs the switch SW, the switch SW is connected to the L terminal and the N terminal and further connected to the utility power 1, the utility power 1 is connected to the driving unit 4, the utility power supplies power to the driving unit, when the utility power is powered off, the electromagnetic relay is powered off, the switch SW is connected to the 90V + and 90V interfaces and further connected to the boost unit 22, the utility power 1 and the backup power supply are connected to the driving; preferably, the boost unit 22 includes a capacitor C5, and an inductor and a diode connected in sequence, the output terminal of the backup battery 21 is connected to the input terminal of the inductor, the diode is connected to the input terminal of the driving unit 4, and the capacitor C5 is connected in parallel between the diode and the driving unit 4; preferably, the boost unit 22 further includes a mos tube, a control end of the mos tube is connected to the output end of the driving unit 4, and the capacitor C5 is connected in parallel between the diode and the connection between the mos tube and the driving unit 4; the standby power supply 1 further comprises an energy storage capacitor C1 and a filter capacitor C2, wherein the energy storage capacitor C1 and the filter capacitor C2 are respectively connected in parallel at two ends of the standby battery to ensure the power supply stability of the standby battery.
The invention also discloses a control method of a low-power external power supply adaptive to the built-in drive of a lamp, which is shown in fig. 3-4, wherein the power of the standby battery is less than that of the LED load, and the method comprises the following steps:
s1, judging whether the power supply state of the LED load 5 is normal, when the power supply state is normal, the switch control unit 3 is conducted with the mains supply 1, the mains supply 1 is conducted with the driving unit 4, and then the LED load is currently in a common lighting mode; if the power supply state is abnormal, the switch control unit 3 is conducted with the boost unit 22, the output end of the boost unit 22 is conducted with the input end of the driving unit 4, and the emergency lighting mode is started;
s2, in the emergency lighting mode, the output voltage of the boost unit 22 is instantly larger than or equal to the starting voltage of the driving unit 4, so that the driving unit 4 is started, and the LED load 5 emits light;
and S3, after the start is finished, the output power of the backup battery 21 input into the boost unit 22 is smaller than the output power of the driving unit 4 connected with the output end of the boost unit 22, the output voltage of the boost unit 22 is forcibly pulled down, and at the moment, the output unit of the boost unit 22 is smaller than the 4 start voltage of the driving unit.
And S4, inputting the output voltage lower than the starting voltage from the boost unit 22 to the input end of the driving unit 4, and achieving self-adaptive balance between the driving unit 4 and the limited energy provided by the backup battery 21 to achieve the energy conservation law, so that the driving unit 4 works under the condition that the power is less than or equal to the low power of the backup battery 21.
In step S1, specifically, when the commercial power is normally supplied, the electromagnetic relay adsorbs the switch, and the commercial power 1 is conducted with the driving unit 4; when the commercial power is cut off, the electromagnetic relay is cut off, the switch is connected with the boost unit 22, and the output end of the boost unit 22 is conducted with the input end of the driving unit 4.
In step S2, specifically, in the emergency lighting mode, the step of momentarily setting the output voltage of the boost unit 22 to be equal to or higher than the start voltage of the driving unit 4, starting the driving unit 4, and lighting the LED load 5 includes the specific steps of: entering an emergency lighting mode, wherein the standby battery 21 provides direct current, the inductor charges the capacitor C5, the voltage at two ends of the capacitor C5 is increased, and at this time, the output voltage of the boost unit 22 is greater than or equal to the starting voltage of the driving unit 4, so that the driving unit 4 is started, and the LED load works; after the start is completed, the output power of the backup battery 21 input to the boost unit 22 is smaller than the output power of the driving unit 4 connected to the output end of the boost unit 22, the output voltage of the boost unit 22 is forcibly pulled down, and at this time, the step of the boost unit 22 outputting the voltage smaller than the start voltage specifically includes: after the start is finished, the LED load 5 of the driving unit 4 outputs a start voltage to turn on the mos transistor, at this time, the power of the input end of the boost unit 22 is smaller than the power of the output end of the boost unit 22, and the output voltage of the boost unit 22 is smaller than the start voltage; and an energy storage capacitor C1 and a filter capacitor C2 are connected in parallel at two ends of the standby battery to ensure the stability of power supply.
Taking the power of the standby power supply as 5W, the voltage as 12V, the power of the LED load as 50W, and the voltage as 90V as an example, the starting voltage at this time is 90V;
s1: judging whether the power supply state of the LED load 5 is normal or not, when the power supply state is normal and the commercial power 1 is normally supplied, the electromagnetic relay adsorbs the switch, the commercial power 1 is conducted with the driving unit 4, and the commercial power outputs 90V voltage to the LED load 5 to work and is in a normal lighting mode; after the mains supply 1 is powered off, the electromagnetic relay is powered off, and the switch is conducted with the boost unit 22 to enter an emergency lighting mode;
s2, in the emergency lighting mode, the standby battery 21 provides direct current, the standby battery 21 outputs 12V voltage, the inductor charges the capacitor C5, the voltage at the two ends of the capacitor C5 rises, and at the moment, the boost unit 22 outputs voltage larger than or equal to 90V, so that the driving unit 4 is started, and the LED load works; after the start is completed, the inductance of the boost unit 22 finishes discharging, at this time, the output power of the driving unit 4 is 50W and is greater than the input power 5W of the backup battery 21, and the boost unit 22 forcibly outputs a voltage lower than 90V;
s3, after the start-up is completed, the negative electrode of the LED load 5 of the driving unit 4 outputs 90V, so that the mos tube is conducted, and at the moment, the power of the input end of the boost unit 22 is smaller than the power of the output end of the boost unit 22, so that the output voltage of the boost unit 22 is smaller than 90V;
s4, when the input voltage of the driving unit 4 is less than 90V, the driving unit 4 and the limited energy provided by the backup power source 21 achieve adaptive balance, so that the energy is conserved and the LED load 5 of the driving unit 4 continues to operate under low power.
The above disclosure is only one or more specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (9)
1. A control method of a low-power external power supply adaptive to built-in driving of a lamp is characterized in that the power of a standby battery is smaller than that of an LED load, and the method comprises the following steps:
judging whether the power supply state of the LED load is normal or not, and if the power supply state is normal, conducting the switch control unit with the commercial power, conducting the commercial power with the driving unit, and then currently in a common lighting mode; if the power supply state is abnormal, the switch control unit is conducted with the boost unit, the output end of the boost unit is conducted with the input end of the driving unit, and the emergency lighting mode is entered;
in an emergency lighting mode, the output voltage of the boost unit is instantaneously greater than or equal to the starting voltage of the driving unit, so that the driving unit is started, and the LED load emits light;
after the start is finished, the output power of the backup battery input boost unit is smaller than the output power of the driving unit connected with the output end of the boost unit, the output voltage of the boost unit is forcibly pulled down, and at the moment, the output unit of the boost unit is smaller than the starting voltage of the driving unit;
the input end of the driving unit inputs output voltage which is lower than starting voltage from the boost unit, and the driving unit and the limited energy provided by the standby battery achieve self-adaptive balance to achieve the law of energy conservation, so that the driving unit works under the condition that the power of the driving unit is less than or equal to the low power of the standby battery;
in the step of judging the power supply state of the LED, specifically, when the commercial power is normally supplied, the electromagnetic relay adsorbs the switch, and the commercial power is conducted with the driving unit; when the commercial power is cut off, the electromagnetic relay is not electrified, the switch is connected with the boost unit, and then the output end of the boost unit is conducted with the input end of the driving unit.
2. The control method of the low-power external power supply adaptive to the built-in drive of the lamp according to claim 1, wherein in the emergency lighting mode, the output voltage of the boost unit is instantaneously greater than or equal to the starting voltage of the drive unit, so that the drive unit is started, and the LED load emits light, specifically comprising the steps of: and entering an emergency lighting mode, the standby battery provides direct current, the inductor charges the capacitor C5, the voltage at two ends of the capacitor C5 is increased, and the output voltage of the boost unit is greater than or equal to the starting voltage, so that the driving unit is started and the LED load works.
3. The method for controlling a low-power external power supply adapted to be driven by a built-in lamp according to claim 2, wherein after the start-up is completed, the output power of the boost unit input by the backup battery is smaller than the output power of the driving unit connected to the output terminal of the boost unit, the output voltage of the boost unit is forcibly pulled down, and at this time, the step of making the output voltage of the boost unit smaller than the start-up voltage specifically comprises: after the start-up is completed, the LED load of the driving unit outputs the starting voltage, so that the mos tube is conducted, the power of the input end of the boost unit is smaller than that of the output end of the boost unit, and the output voltage of the boost unit is smaller than the starting voltage.
4. The method for controlling the low-power external power supply of the built-in driver of the adaptive lamp as claimed in claim 1, further comprising an energy storage capacitor C1 and a filter capacitor C2, wherein the energy storage capacitor C1 and the filter capacitor C2 are respectively connected in parallel to two ends of the backup battery.
5. A low-power external power supply circuit adaptive to built-in drive of a lamp is characterized by comprising a commercial power supply, a standby power supply, a switch control unit, a drive unit and an LED load, wherein the power of the standby power supply is smaller than that of the LED load; when the mains supply is powered off, the switch control unit enables the output end of the boost unit to be connected with the input end of the driving unit, the instantaneous output voltage of the boost unit is larger than or equal to the starting voltage of the driving unit, the driving unit is enabled to start, the LED load works, at the moment, the input power of the driving unit is larger than the output power of the standby battery, and the boost unit is forced to be pulled down to enable the output voltage to be smaller than the starting voltage of the driving unit; and then the limited energy provided by the driving unit and the standby battery achieves self-adaptive balance, and the energy conservation law is achieved, namely the driving unit works under the condition that the low power of the standby battery is less than or equal to the low power of the standby battery.
6. The low-power external power supply circuit internally driven by an adaptive lamp according to claim 5, wherein the switch control unit comprises an electromagnetic relay and a switch controlled by the electromagnetic relay, when the mains supply is powered on, the electromagnetic relay adsorbs the switch, the switch is connected with the mains supply, when the mains supply is disconnected, the electromagnetic relay is powered off, and the switch is connected with the boost unit.
7. The low-power external power supply circuit matched with the built-in driving of the lamp as claimed in claim 5, wherein the boost unit comprises a capacitor C5 and an inductor and a diode which are connected in sequence, the output end of the backup battery is connected with the input end of the inductor, the diode is connected with the input end of the driving unit, and the capacitor C5 is connected in parallel between the diode and the driving unit.
8. The low-power external power supply circuit matched with the built-in driving of the lamp as claimed in claim 7, wherein the boost unit further comprises a mos tube, a control end of the mos tube is connected with an output end of the driving unit, and the capacitor C5 is connected in parallel between the diode and the mos tube and the driving unit.
9. The low-power external power supply circuit matched with the built-in drive of the lamp as claimed in claim 5, wherein the standby power supply further comprises an energy storage capacitor C1 and a filter capacitor C2, and the energy storage capacitor C1 and the filter capacitor C2 are respectively connected in parallel to two ends of the standby battery.
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| CN201811192785.1A CN109451623B (en) | 2018-10-13 | 2018-10-13 | Control method and circuit of low-power external power supply adaptive to built-in drive of lamp |
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| CN201811192785.1A CN109451623B (en) | 2018-10-13 | 2018-10-13 | Control method and circuit of low-power external power supply adaptive to built-in drive of lamp |
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| CN114352983A (en) * | 2022-03-17 | 2022-04-15 | 深圳市爱图仕影像器材有限公司 | Method and device for distributing power, electronic equipment and storage medium |
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| CN103148452B (en) * | 2012-12-18 | 2015-04-08 | 北京中科知创电器有限公司 | Light sparing device for fire-fighting emergency indicating lamp |
| CN203884057U (en) * | 2014-06-11 | 2014-10-15 | 宁波博煌光能科技有限公司 | Circuit used for controlling chargeable work lamp and capable of adjusting light |
| CN203968472U (en) * | 2014-07-14 | 2014-11-26 | 毛昭祺 | A kind of emergency lighting system for LED |
| CN108463028A (en) * | 2018-02-26 | 2018-08-28 | 珠海澳米嘉电子有限公司 | A kind of emergency power supply and emergency system being suitable for driving external LED lamp |
| CN108307563A (en) * | 2018-03-01 | 2018-07-20 | 宁波市普乐电器有限公司 | Integral LED driving with emergent self-checking function and its self checking method |
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