CN113644729A - Integrated emergency power supply for lamp - Google Patents
Integrated emergency power supply for lamp Download PDFInfo
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- CN113644729A CN113644729A CN202110814531.4A CN202110814531A CN113644729A CN 113644729 A CN113644729 A CN 113644729A CN 202110814531 A CN202110814531 A CN 202110814531A CN 113644729 A CN113644729 A CN 113644729A
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- module
- power
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- detection
- power supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
Abstract
The invention discloses an integrated emergency power supply for a lamp, which comprises an automatic state switching module, a detection module and a power supply module, wherein the automatic state switching module is used for connecting a mains supply with the detection module when the mains supply is powered off, disconnecting the mains supply from the detection module when the mains supply is powered on, and disconnecting the power supply of the detection module when the mains supply is powered on and connecting the detection module with the mains supply; the battery module is used for supplying power to the lamp when the mains supply is powered off; the detection module detects whether the mains supply can normally supply power to the lamp and outputs a switch control signal according to the reflected impedance of the power grid, and is connected with the automatic state switching module; the switch module is used for switching the charging state or the power supply state of the battery module and is connected with the detection module; the inverter module is used for converting the direct current output by the battery module into alternating current for supplying power to a load and is connected with the battery module; according to the invention, the automatic state switching module is used for realizing that the lamp can be automatically switched to the battery module for supplying power when the mains supply is powered off, manual operation is not needed, the timeliness is strong, and the problem that the lamp cannot be used for lighting after the power off is effectively solved.
Description
Technical Field
The invention relates to the technical field of power supplies, in particular to an integrated emergency power supply for a lamp.
Background
With the development of new energy, new energy is adopted as power in more and more fields. Because of the advantages of high energy density, cyclic charging, safety, environmental protection and the like, the battery is widely applied to the fields of new energy automobiles, consumer electronics, energy storage systems and the like.
Emergency lighting plays a crucial role in production and life, for example, in occasions with two power supplies for supplying power, such as fire-fighting access emergency lamps, fire-fighting access marker lamps, buildings and the like, when one power supply fails, the lamp can be automatically switched to the other power supply as required, and the requirement of continuous uninterrupted lighting is met. The existing fire-fighting emergency lamp or indicator lamp is high in cost by using a mode that a single chip microcomputer is integrated into a power supply control loop. In the prior art, the emergency power supply of the lamp is difficult to be converted into the emergency power supply for power supply at the first time under the condition of power supply and power failure of a power grid, so that the timeliness is poor, and the lighting requirement of the emergency lighting lamp is difficult to meet.
For example, chinese patent CN201711491845.5 discloses a fire emergency lighting device and a fire emergency lighting control method. After the working voltage of the main power supply is abnormally switched to the standby power supply for power supply through the power supply controller, the lamp is switched to an emergency state, and after the emergency state is switched to the set time, the lamp is switched to a normal state, so that the lamp is automatically restored to the normal state after the emergency state is switched to. However, in the process of emergency switching, the power supply state of the power grid is not directly detected, the emergency power supply cannot be switched at the first time, and the emergency timeliness is poor.
Disclosure of Invention
The invention mainly solves the problem of poor emergency timeliness of the emergency power supply of the lamp in the prior art; the integrated emergency power supply for the lamp is provided, the power supply of the emergency power supply is switched at the first time of the power supply outage of the mains supply, the timely switching of the power supply of the lamp is achieved, and the timeliness is better.
The technical problem of the invention is mainly solved by the following technical scheme: an integrated emergency power supply for a lamp comprises an automatic state switching module, a detection module, a power supply module and a power supply module, wherein the automatic state switching module is used for connecting a mains supply with the detection module when the mains supply is powered off, disconnecting the mains supply from the detection module when the mains supply is powered on, and disconnecting the power supply of the detection module when the mains supply is powered on and connecting the detection module with the mains supply; the battery module is used for supplying power to the lamp when the mains supply is powered off; the detection module detects whether the mains supply can normally supply power to the lamp and outputs a switch control signal according to the reflected impedance of the power grid, and is connected with the automatic state switching module; the switch module is used for switching the charging state or the power supply state of the battery module and is connected with the detection module; the inverter module is used for converting the direct current output by the battery module into alternating current for supplying power to a load and is connected with the battery module; and the alternating current output conversion module is used for switching the lamp to supply power to the commercial power or the battery module and is connected with the detection module. When the commercial power is cut off, the state automatic switching module communicates the commercial power with the detection module, so that the detection module can detect the reflection impedance of the power grid, the power grid power-off detection and the power supply control of the battery module are realized, the reaction is rapid, and the timeliness is good.
Preferably, the detection module comprises a current sensor, a control unit and a signal generator, the input end of the current sensor is connected with the automatic state switching module, the current sensor is used for detecting the reflection impedance of the power grid, the output end of the current sensor is connected with the control unit, the control unit judges whether the mains supply can normally supply power to the lamp according to the reflection impedance of the power grid, if so, no action is generated, and if not, the signal generator is controlled to output a switch control signal. The current sensor is arranged to detect the reflection impedance of the power grid, so that the method is simple, reliable and suitable for application.
Preferably, the intelligent power supply further comprises a wall switch, and the wall switch is arranged between the commercial power and the automatic state switching module. Through the wall switch for emergency power source has the function of can turn-off, and the user can be according to the convenient wall switch of using of particular case and whether use emergency power source, even the power failure, the user still can turn off it when not needing the illumination, has improved the convenience that emergency power source used.
Preferably, the device further comprises a shell, the shell comprises an upper cover and a base, the upper cover is clamped with the base, and the automatic state switching module, the battery module, the detection module, the switch module, the inverter module and the alternating current output conversion module are all arranged in the base.
Preferably, the battery charging system further comprises a rectifying and charging module, wherein the rectifying and charging module comprises an AC-DC rectifying unit, a detection protection unit and a DC-DC conversion unit, an input end of the AC-DC rectifying unit is connected with the automatic state switching module, an output end of the AC-DC rectifying unit is connected with the detection protection unit, an input end of the DC-DC conversion unit is connected with the detection protection unit, and an output end of the DC-DC conversion unit is connected with the battery module. Through the rectification charging module, the commercial power is used for charging the battery module while supplying power to the lamp load, and the battery module is ensured to have sufficient electric quantity.
Preferably, the switch module includes a first switch module and a second switch module, a first end of the first switch module is connected to the battery module, a second end of the first switch module is connected to the inverter module, a control end of the first switch module is connected to the detection module, a first end of the second switch module is connected to the battery module, a second end of the second switch module is provided with a first contact and a second contact, the first contact is connected to an output end of the DC-DC conversion unit, the second contact is connected to the inverter module, and a control end of the second switch module is connected to the detection module. The first switch module and the second switch module are used for realizing the conversion from the charging state to the power supply state of the battery module, and meanwhile, the inversion module is enabled to work.
Preferably, the detection module further comprises a first DC-DC module and a second DC-DC module, the battery module supplies power to the detection module through the first DC-DC module, the second DC-DC module is connected between the second switch module and the inversion module, and the battery module supplies power to the inversion module through the second DC-DC module. The first DC-DC module and the second DC-DC module enable the detection module and the inversion module to work stably.
Preferably, the inverter module comprises a control IC unit, a DC-AC conversion circuit and a DC-DC boost circuit, the control IC unit is connected to the second DC-DC module, the control IC unit supplies power to generate an SPWM signal to the DC-AC conversion circuit, the DC-AC conversion circuit converts the direct current, which is transmitted after the battery module is boosted by the DC-DC boost circuit through the second switch module, into an alternating current according to the SPWM signal, and the DC-AC conversion circuit is connected to the alternating current output conversion module. The control IC unit with independent power supply is adopted, so that the control of the DC-AC conversion circuit is more stable, two-stage DC-DC-AC high-frequency sinusoidal modulation inversion is adopted, the SPWM adopts a bipolar three-order modulation method, the harmonic content of a power supply is greatly reduced, and standard sinusoidal voltage is output.
The invention has the beneficial effects that: (1) the automatic state switching module is used for automatically switching the lamp to the battery module for supplying power when the mains supply is powered off, manual operation is not needed, timeliness is high, and the problem that the lamp cannot be used for lighting after being powered off is effectively solved; (2) the wall switch is ordinary domestic switch need not to lay circuit in addition and control electricity for emergency power source's application occasion is more, and the range of application is wider.
Drawings
Fig. 1 is a circuit connection block diagram of an integrated emergency power supply according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a housing according to a first embodiment of the invention.
Fig. 3 is an exploded view of the housing according to the first embodiment of the present invention.
In the figure, the power supply module 1, the mains supply module 2, the rectifying and charging module 3, the automatic state switching module 4, the battery module 5, the detection module 6, the inverter module 7, the first DC-DC module 8, the second switch module 9, the alternating current output conversion module 10, the first switch module 11, the second DC-DC module 12, the upper cover 13, the base 14, the holding part 15, the PCB circuit board 16, the lithium battery 17, the mounting part 18 and the fixing part.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
The first embodiment is as follows: an integrated emergency power supply for a lamp, as shown in fig. 1, comprises an automatic state switching module 3, which is used for connecting a mains supply with a detection module when the mains supply is powered off, disconnecting the mains supply from the detection module when the mains supply is powered on, and disconnecting the power supply of the detection module when the mains supply is powered on, and is connected with the mains supply 1 through a wall switch S1; the battery module 4 is used for supplying power to the lamp when the mains supply is powered off; the detection module 5 detects whether the mains supply can normally supply power to the lamp and outputs a switch control signal according to the reflected impedance of the power grid, and is connected with the automatic state switching module; the switch module comprises a first switch module 10 and a second switch module 8, the first end of the first switch module is connected with the battery module, the second end of the first switch module is connected with the inversion module, the control end of the first switch module is connected with the detection module, the first end of the second switch module is connected with the battery module, the second end of the second switch module is provided with a first contact and a second contact, the first contact is connected with the output end of the DC-DC conversion unit, the second contact is connected with the inversion module, and the control end of the second switch module is connected with the detection module; the inverter module 6 is used for converting the direct current output by the battery module into alternating current for supplying power to a load and is connected with the battery module; the alternating current output conversion module 9 is used for switching the lamp to supply power to the commercial power or the battery module and is connected with the detection module; the rectifying and charging module comprises an AC-DC rectifying unit, a detection protection unit and a DC-DC conversion unit, wherein the input end of the AC-DC rectifying unit is connected with the automatic state switching module, the output end of the AC-DC rectifying unit is connected with the detection protection unit, the input end of the DC-DC conversion unit is connected with the detection protection unit, and the output end of the DC-DC conversion unit is connected with the battery module; the battery module supplies power for the detection module through the first DC-DC module, the second DC-DC module is connected between the second switch module and the inversion module, and the battery module supplies power for the inversion module through the second DC-DC module.
The detection module comprises a current inductor, a control unit and a signal generator, the input end of the current inductor is connected with the automatic state switching module, the current inductor is used for detecting the reflection impedance of a power grid, the output end of the current inductor is connected with the control unit, the control unit judges whether the mains supply can normally supply power to the lamp according to the reflection impedance of the power grid, if yes, no action is generated, and if not, the signal generator is controlled to output a switch control signal.
The inverter module comprises a control IC unit, a DC-AC conversion circuit and a DC-DC booster circuit, the control IC unit is connected with the second DC-DC module, the control IC unit generates SPWM signals to the DC-AC conversion circuit after supplying power, the DC-AC conversion circuit converts direct current transmitted after the battery module is boosted by the DC-DC booster circuit through the second switch module into alternating current according to the SPWM signals, and the DC-AC conversion circuit is connected with the alternating current output conversion module.
The battery module comprises a charging protection unit, a lithium battery pack and an output protection circuit, the charging protection unit is connected with the output end of the DC-DC conversion unit through the second switch module, the lithium battery pack is connected with the charging protection unit, and the output protection circuit is connected with the lithium battery pack.
The lithium battery pack comprises a plurality of battery packs which are connected in parallel, the battery packs comprise a plurality of battery units, the battery units are connected in series, and the battery units are lithium iron phosphate batteries 18730.
An operation switch S2 is arranged between the first DC-DC module and the battery modules, so that when the device is disconnected during storage, S2 can prevent all units of the whole system from working, and the power loss of the lithium battery can be prevented. And the electricity supplementing period is prolonged. And closes S2 when the device is installed for use.
The invention also comprises a shell, wherein the shell comprises an upper cover and a base, the upper cover 12 is clamped with the base 13, and the automatic state switching module, the battery module, the detection module, the switch module, the inversion module, the rectification charging module, the alternating current output conversion module, the first DC-DC module and the second DC-DC module are all arranged in the base.
Be provided with PCB circuit board 15 in the base, state automatic switch-over module, the detection module, switch module, the contravariant module, the rectification module of charging, exchange output conversion module, first DC-DC module and second DC-DC module are all integrated on PCB circuit board, battery module sets up on PCB circuit board, PCB circuit board fixed connection is in the base, the upper cover is fixed through the screw thread behind with the base joint, be provided with columniform portion of gripping 14 on the upper cover, make things convenient for taking of overall state, set up installation department 17 in the bottom of base, set up the fixed part 18 of hook claw form in the bottom of installation department, be used for fixing the casing on external equipment.
In the second embodiment, the invention also detects the state of the battery module by arranging a battery state sensor, a battery state sensing circuit and a fault detection circuit, wherein the battery state sensor is used for acquiring the current information and the temperature information of each battery unit; the battery state sensing circuit is connected with the battery state sensor and used for judging whether the battery unit is normal or not according to the acquired current information and the acquired temperature information; and the fault detection circuit is connected with the battery state inductor and judges whether the battery state inductor has a fault or not by acquiring terminal voltage information of two ends of the battery unit.
The working principle of the invention is as follows: when the wall switch closes the power grid and has a power failure, the automatic state switching module switches on the ACL phase line access end of the commercial power and the detection module, the ACL phase line access end and the detection module are disconnected, the connection port of the disconnection and the rear-stage circuit is connected, the output of the first DC-DC module is controlled to supply power to the detection module, the wall switch is closed to provide a system detection loop, so that the detection module can detect feedback signals (reflected impedance signals) of the power grid system certainly, the control unit control signal generator outputs switch control signals, the first switch module provides a path for the second DC-DC module under the action of the switch control signals, so that the control IC unit supplies power to work, the DC-AC conversion circuit is enabled, and the input and output switching of the inverter circuit completes the conversion under the action of the switch control signals: namely, the alternating current output end is converted to an inversion output end from the original power grid end; the positive pole of lithium cell group is switched to the contravariant input by original input that charges, and the power supply of lithium cell group is for the contravariant module, realizes supplying power for the load with low-voltage DC contravariant for standard sinusoidal power.
If the mains supply suddenly calls, the automatic state switching module immediately cuts off the power supply of the detection module, the ACL end of the mains supply is also switched to the rear-stage end, the detection loop is disconnected, the detection module does not output a switch control signal, the inversion module loses the DC-DC independent power supply and stops working, and the second switch module immediately connects the anode of the lithium battery pack with the rectification charging module and cuts off the connection with the inversion module; the alternating current output conversion module also completes output conversion, the output is directly connected with an external power grid, and the rectification charging module is connected with the commercial power to work at the moment to charge the battery module.
The power grid and the inversion output are standard sine voltages, and the power grid and the inversion output are controlled by the alternating current output conversion module to be electrically isolated, so that mutual influence is avoided. The system works reliably.
When the wall switch S1 is disconnected, the detection loop is cut off, and the inversion has no output; at the moment, the commercial power input is also cut off, no alternating voltage is output, and the system does not work. When the emergency lighting lamp is used for lighting, the emergency lighting lamp can be used in various occasions without limitation, and various areas of household lighting can be installed and used without being turned on or turned off when power is cut off like a common emergency lighting lamp. Even if the mains supply is powered off by the inverter module, the power can be cut off. This will be able to spread it to the place of lighting emergency in the home.
The output end of the alternating current output conversion module is connected with a standard two-phase alternating current socket, so that the alternating current output conversion module not only can supply power for a lamp, but also can be used for electric equipment such as a mobile phone, a charger and the like.
The invention adopts the new energy lithium battery as the backup clean energy, has enough energy storage, can supply 60W effective power output for more than 3 hours, is provided with the charging protection circuit, and has more stable and safer battery charging and power supply.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (8)
1. An integrated emergency power supply for a light fixture, comprising:
the state automatic switching module is used for connecting the commercial power with the detection module when the commercial power is cut off, disconnecting the commercial power from the detection module when the commercial power is electrified, and disconnecting the power supply of the detection module when the commercial power is electrified and connecting the detection module with the commercial power;
the battery module is used for supplying power to the lamp when the mains supply is powered off;
the detection module detects whether the mains supply can normally supply power to the lamp and outputs a switch control signal according to the reflected impedance of the power grid, and is connected with the automatic state switching module;
the switch module is used for switching the charging state or the power supply state of the battery module and is connected with the detection module;
the inverter module is used for converting the direct current output by the battery module into alternating current for supplying power to a load and is connected with the battery module;
and the alternating current output conversion module is used for switching the lamp to supply power to the commercial power or the battery module and is connected with the detection module.
2. An integrated emergency power supply for a light fixture, according to claim 1,
the detection module comprises a current inductor, a control unit and a signal generator, wherein the input end of the current inductor is connected with the automatic state switching module, the current inductor is used for detecting the reflection impedance of a power grid, the output end of the current inductor is connected with the control unit, the control unit judges whether the commercial power can normally supply power to the lamp according to the reflection impedance of the power grid, if yes, no action is generated, and if not, the signal generator outputs a switch control signal.
3. An integrated emergency power supply for a light fixture, according to claim 1,
the wall switch is arranged between the commercial power and the automatic state switching module.
4. The integrated emergency power supply of claim 1, further comprising
The automatic state switching device is characterized by further comprising a shell, the shell comprises an upper cover and a base, the upper cover is connected with the base in a clamped mode, and the automatic state switching module, the battery module, the detection module, the switch module, the inversion module and the alternating current output conversion module are all arranged in the base.
5. An integrated emergency power supply for a luminaire according to claim 1 or 2,
the battery module is characterized by further comprising a rectifying and charging module, wherein the rectifying and charging module comprises an AC-DC rectifying unit, a detection protection unit and a DC-DC conversion unit, the input end of the AC-DC rectifying unit is connected with the automatic state switching module, the output end of the AC-DC rectifying unit is connected with the detection protection unit, the input end of the DC-DC conversion unit is connected with the detection protection unit, and the output end of the DC-DC conversion unit is connected with the battery module.
6. An integrated emergency power supply for a light fixture, according to claim 5,
the switch module comprises a first switch module and a second switch module, the first end of the first switch module is connected with the battery module, the second end of the first switch module is connected with the inversion module, the control end of the first switch module is connected with the detection module, the first end of the second switch module is connected with the battery module, the second end of the second switch module is provided with a first contact and a second contact, the first contact is connected with the output end of the DC-DC conversion unit, the second contact is connected with the inversion module, and the control end of the second switch module is connected with the detection module.
7. An integrated emergency power supply for a light fixture, according to claim 6,
the battery module supplies power to the detection module through the first DC-DC module, the second DC-DC module is connected between the second switch module and the inversion module, and the battery module supplies power to the inversion module through the second DC-DC module.
8. An integrated emergency power supply for a light fixture, according to claim 7,
the inverter module comprises a control IC unit, a DC-AC conversion circuit and a DC-DC booster circuit, the control IC unit is connected with the second DC-DC module, the control IC unit generates an SPWM signal to the DC-AC conversion circuit after supplying power, the DC-AC conversion circuit converts direct current transmitted by the battery module after being boosted by the DC-DC booster circuit through the second switch module into alternating current according to the SPWM signal, and the DC-AC conversion circuit is connected with the alternating current output conversion module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110814531.4A CN113644729A (en) | 2021-07-19 | 2021-07-19 | Integrated emergency power supply for lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110814531.4A CN113644729A (en) | 2021-07-19 | 2021-07-19 | Integrated emergency power supply for lamp |
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| CN113644729A true CN113644729A (en) | 2021-11-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116208001A (en) * | 2023-02-17 | 2023-06-02 | 深圳市比尔达科技有限公司 | Constant-power pure sine wave output circuit, device and power supply system |
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2021
- 2021-07-19 CN CN202110814531.4A patent/CN113644729A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116208001A (en) * | 2023-02-17 | 2023-06-02 | 深圳市比尔达科技有限公司 | Constant-power pure sine wave output circuit, device and power supply system |
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