Driving power supply device, emergency test system and emergency lighting system with same

Abstract

The invention discloses a driving power supply device, an emergency test system and an emergency lighting system having the same. The driving power supply device comprises an AC input interface configured to be connected with an external AC power supply; the driving circuit is configured to convert alternating current input by the alternating current input interface into direct current; the direct current output interface is configured to output the converted direct current to an external load; the emergency interface is provided with a positive voltage end and a negative voltage end, the positive voltage end is connected with the positive output end of the direct current output interface through a first diode, and the positive voltage end is connected with the positive electrode of the first diode; the negative voltage end is connected with the negative output end of the direct current output interface; the positive voltage end of the emergency interface is configured to be connected with the positive driving end of an external emergency driving power supply, and the negative electrode of the emergency interface is configured to be connected with the negative driving end of the external emergency driving power supply; and the emergency interface is configured to receive a control signal sent by an external emergency driving power supply so as to control the working state of the driving power supply device.

Description

Technical Field

[0001] The present invention relates to the field of emergency lighting, and in particular to a driving power supply device, an emergency test system and an emergency lighting system having the same. Background Art

[0002] Conventional LED driver power supplies are used to provide conventional DC output, such as 12V / 24V DC, for daily lighting. If you attempt to convert a conventional LED lamp into an emergency lighting fixture, there are two typical approaches:

[0003] The first method is to install the emergency drive part inside the lamp, but this will increase the inventory types and corresponding quantities of lamps, increase inventory costs and management difficulties;

[0004] The second method is to reserve a plug-in wiring harness for connection with the emergency drive, which requires at least four pairs of wiring harnesses for plug-in connection, which increases the cost and complexity of assembly.

[0005] The disclosure of the above background technology content is only used to assist in understanding the concept and technical solution of this application. It does not necessarily belong to the prior art of this application, nor does it necessarily provide technical guidance. In the absence of clear evidence that the above content has been disclosed before the filing date of this application, the above background technology should not be used to evaluate the novelty and creativity of this application. Summary of the Invention

[0006] The purpose of the present invention is to provide a driving power supply device, which is connected to an external emergency driving power supply by configuring an emergency interface, so as to realize the control of the LED driving power supply device by the external emergency driving power supply.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0008] A driving power supply device, comprising:

[0009] an AC input interface configured to connect to an external AC power source;

[0010] a driving circuit configured to convert the alternating current inputted from the alternating current input interface into direct current;

[0011] a DC output interface configured to output the converted DC power to an external load;

[0012] An emergency interface, which is configured with a positive voltage terminal and a negative voltage terminal, the positive voltage terminal being connected to the positive output terminal of the DC output interface through a first diode, and the positive voltage terminal being connected to the anode of the first diode; the negative voltage terminal being connected to the negative output terminal of the DC output interface;

[0013] The positive voltage terminal of the emergency interface is configured to be connected to the positive drive terminal of the external emergency drive power supply, and the negative terminal thereof is configured to be connected to the negative drive terminal of the external emergency drive power supply;

[0014] The emergency interface is configured to receive a control signal sent by an external emergency driving power supply to control the working state of the driving power supply device.

[0015] Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions described above, the driving circuit is configured with an enabling chip and a power supply. When the enabling chip is connected to the power supply, the driving circuit works; when the enabling chip is disconnected from the power supply, the driving circuit stops working.

[0016] Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions described above, the driving power supply device also includes a transistor, the base of the transistor is connected to the negative electrode of the first diode, the collector of the transistor is connected to the power supply of the driving circuit, and the emitter of the transistor is grounded.

[0017] Furthermore, based on any one of the above technical solutions or a combination of multiple technical solutions, the emergency interface is further configured with a control terminal, which is configured to be connected to the control signal sending terminal of the emergency driving power supply;

[0018] The driving power supply device further comprises a transistor, a base of which is connected to the control end of the emergency interface, a collector of which is connected to the power supply of the driving circuit, and an emitter of which is grounded.

[0019] Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions described above, the control end of the emergency interface is configured to receive a dial signal of the dial switch of the emergency drive power supply, and the dial signal is divided into a high-level signal and a low-level signal.

[0020] Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions described above, the control end of the emergency interface is connected to the base of the transistor through the first diode or the second diode, the control end is connected to the positive pole of the diode, and the base is connected to the negative pole of the diode.

[0021] Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions mentioned above, the driving circuit includes an input protection module, a rectifier, a power factor correction module, and a DC-DC conversion module.

[0022] According to another aspect of the present invention, an emergency test system is provided, comprising an emergency driving power supply and the driving power supply device as described above, wherein the emergency driving power supply is configured with a test dip switch, and the emergency interface of the driving power supply device is configured with a control terminal, which receives the dip signal of the test dip switch.

[0023] Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions described above, the emergency drive power supply includes an AC-DC converter, a battery management module, and an emergency conversion module, wherein the battery management module manages the DC power output by the AC-DC converter to charge the emergency battery pack, and the emergency conversion module is configured to connect the discharge circuit of the emergency battery pack to the external load when it detects that the external AC power supply is disconnected, and disconnect the discharge circuit of the emergency battery pack when it detects that the external AC power supply is restored.

[0024] According to yet another aspect of the present invention, an emergency lighting system is provided, comprising an emergency battery pack, a lighting load, and the emergency test system as described above.

[0025] The beneficial effects brought about by the technical solution provided by the present invention are as follows:

[0026] a. The working state of the LED driving power supply device can be controlled by sampling the positive electrode of the emergency driving power supply output: when the emergency driving power supply has output, the signal is sampled to control the LED driving power supply device to stop working;

[0027] b. The working status of the LED driver power supply device can be determined by dialing the emergency driver power supply terminal: when the dial outputs a high-level signal, the LED driver power supply device is controlled to stop working through the Ctrl control terminal;

[0028] c. When testing, you can leave the LED driver power output on and simulate AC power outage by dialing the emergency driver power terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 A schematic diagram of a driving power supply device with an emergency interface connected to an external emergency driving power supply according to an exemplary embodiment of the present invention;

[0031] Figure 2A schematic diagram of a first structure for realizing an emergency driving power supply to control the working state of a driving power supply device provided by an exemplary embodiment of the present invention;

[0032] Figure 3 A schematic diagram of a second structure for implementing an emergency driving power supply to control the working state of a driving power supply device is provided as an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] In one embodiment of the present invention, a driving power supply device is provided, such as Figure 1 As shown, the driving power supply device includes:

[0036] an AC input interface configured to connect to an external AC power source;

[0037] a driving circuit configured to convert the alternating current inputted from the alternating current input interface into direct current;

[0038] a DC output interface configured to output the converted DC power to an external load;

[0039] An emergency interface, which is configured with a positive voltage terminal and a negative voltage terminal, the positive voltage terminal being connected to the positive output terminal of the DC output interface through a first diode, and the positive voltage terminal being connected to the anode of the first diode; the negative voltage terminal being connected to the negative output terminal of the DC output interface;

[0040] The positive voltage terminal of the emergency interface is configured to be connected to the positive drive terminal of the external emergency drive power supply, and the negative terminal thereof is configured to be connected to the negative drive terminal of the external emergency drive power supply;

[0041] The emergency interface is configured to receive a control signal sent by an external emergency driving power supply to control the working state of the driving power supply device.

[0042] In this embodiment, the driving power supply device is an LED driving power supply. When the external AC power supply is working normally, the driving power supply device is used to convert the input power supply (such as 220V AC mains) into a stable current or voltage suitable for the operation of the LED load. The driving circuit conventionally includes an input protection module, a rectifier (rectifier bridge circuit), a power factor correction module, and a DC-DC conversion module. Among them, the input protection module may include a fuse to prevent short-circuit damage to the circuit, a varistor to absorb surge voltage, an NTC thermistor to suppress surge current during startup, etc., and an EMI filter may also be introduced to filter out high-frequency noise to meet electromagnetic compatibility standards. A common power factor correction module (PFC) can use a simple LC filter circuit to improve the power factor and reduce harmonic distortion. The DC-DC conversion module uses a Buck circuit to output a constant voltage after the voltage is stepped down (such as a 12V / 24V DC voltage), and output it to the external load through the DC output interface.

[0043] The emergency interface is configured to receive a control signal sent by an external emergency driving power supply to control the working state of the driving power supply device. There are two main ways:

[0044] Method 1: Figure 2 As shown, the drive circuit is configured with an enabling chip and a power supply. When the enabling chip is connected to the power supply, the drive circuit operates; when the enabling chip is disconnected from the power supply, the drive circuit stops operating. The drive power supply device also includes a transistor, the base of which is connected to the cathode of the first diode, the collector of which is connected to the power supply of the drive circuit, and the emitter of which is grounded.

[0045] The working principle is as follows: When the emergency drive power supply has output current / voltage, it is rectified to the base of the transistor through the first diode, satisfying the forward bias of the base-emitter voltage, and the transistor is turned on. At this time, the transistor pulls down the voltage of the VCC power supply pin of the enable chip, disconnecting the enable chip from the VCC power supply, and then the drive circuit stops working.

[0046] Method 2: Figure 3As shown, the drive circuit is equipped with an enabling chip and a power supply. When the enabling chip is connected to the power supply, the drive circuit operates; when the enabling chip is disconnected from the power supply, the drive circuit stops operating. The emergency interface is also equipped with a control terminal, which is configured to connect to the control signal sending terminal of the emergency drive power supply. The drive power supply device also includes a transistor, whose base is connected to the control terminal of the emergency interface, its collector is connected to the power supply of the drive circuit, and its emitter is grounded.

[0047] The control end of the emergency interface is configured to receive a dial signal of the dial switch of the emergency driving power supply, and the dial signal is divided into a high level signal and a low level signal.

[0048] In a further embodiment, the control terminal of the emergency interface and the base of the transistor can also be connected as follows: Figure 3 A diode is connected in this way. This diode can be the first diode mentioned above, or a second diode different from the first diode. The control end is connected to the anode of the diode, and the base is connected to the cathode of the diode.

[0049] Here’s how it works:

[0050] The emergency driver power supply controls the emergency battery pack connected to the load power supply circuit when the external AC power fails. This ensures that the lighting load can still illuminate in the event of a mains power failure. This is very useful in emergencies such as fires that cause the mains power to be cut off. Providing emergency lighting in the corridor facilitates orderly and rapid evacuation of the accident scene. Therefore, it is important to periodically test the emergency driver.

[0051] In this embodiment, a test DIP switch is specially configured on the emergency drive power supply. Even if the mains power is working normally, the mains power failure can be simulated by simply operating the DIP switch to send a high-level signal: the high-level signal of the DIP switch is applied to the base of the NPN transistor through a diode, causing the base-emitter voltage to be forward biased, turning on the transistor, and then pulling down the voltage of the VCC power supply pin of the enable chip, disconnecting the enable chip from the VCC power supply, and then stopping the drive circuit from working.

[0052] If the operating dial switch sends a high-level signal and the lighting load still illuminates, it means that the emergency drive power supply is working normally and the test passes; if the operating dial switch sends a high-level signal and the lighting load cannot illuminate, it means that the emergency drive power supply fails and needs maintenance.

[0053] According to another aspect of the present invention, an emergency test system is provided, comprising an emergency driving power supply and the driving power supply device as described above, wherein the emergency driving power supply is configured with a test dip switch, and the emergency interface of the driving power supply device is configured with a control terminal, which receives the dip signal of the test dip switch.

[0054] Furthermore, the emergency drive power supply includes an AC-DC converter, a battery management module, and an emergency conversion module. The battery management module manages the DC power output by the AC-DC converter to charge the emergency battery pack. The emergency conversion module is configured to connect the emergency battery pack's discharge circuit to an external load upon detecting a disconnection of the external AC power supply, and to disconnect the emergency battery pack's discharge circuit upon detecting a restoration of the external AC power supply. The emergency drive power supply described herein is prior art, and reference can be made to the disclosures of Chinese patents / patent applications such as CN222638220U, CN111194125A, and CN209462675U.

[0055] According to yet another aspect of the present invention, an emergency lighting system is provided, comprising an emergency battery pack, a lighting load, and the emergency test system as described above.

[0056] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0057] The above is only a specific implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A driving power supply device, characterized in that: include: an AC input interface configured to connect to an external AC power source; a driving circuit configured to convert the alternating current inputted from the alternating current input interface into direct current; a DC output interface configured to output the converted DC power to an external load; An emergency interface, which is configured with a positive voltage terminal and a negative voltage terminal, the positive voltage terminal being connected to the positive output terminal of the DC output interface through a first diode, and the positive voltage terminal being connected to the anode of the first diode; the negative voltage terminal being connected to the negative output terminal of the DC output interface; The positive voltage terminal of the emergency interface is configured to be connected to the positive drive terminal of the external emergency drive power supply, and the negative terminal thereof is configured to be connected to the negative drive terminal of the external emergency drive power supply; The emergency interface is configured to receive a control signal sent by an external emergency driving power supply to control the working state of the driving power supply device.

2. The driving power supply device according to claim 1, characterized in that: The driving circuit is configured with an enabling chip and a power supply. When the enabling chip is connected to the power supply, the driving circuit works; when the enabling chip is disconnected from the power supply, the driving circuit stops working.

3. The driving power supply device according to claim 2, characterized in that: It also includes a transistor, the base of the transistor is connected to the cathode of the first diode, the collector of the transistor is connected to the power supply of the driving circuit, and the emitter of the transistor is grounded.

4. The driving power supply device according to claim 2, characterized in that: The emergency interface is further configured with a control terminal, which is configured to be connected to a control signal sending terminal of the emergency driving power supply; The driving power supply device further comprises a transistor, a base of which is connected to the control end of the emergency interface, a collector of which is connected to the power supply of the driving circuit, and an emitter of which is grounded.

5. The driving power supply device according to claim 4, characterized in that: The control end of the emergency interface is configured to receive a dial signal of a dial switch of the emergency driving power supply, and the dial signal is divided into a high level signal and a low level signal.

6. The driving power supply device according to claim 4, characterized in that: The control end of the emergency interface is connected to the base of the transistor via the first diode or the second diode. The control end is connected to the anode of the diode, and the base is connected to the cathode of the diode.

7. The driving power supply device according to any one of claims 1 to 6, characterized in that: The driving circuit includes an input protection module, a rectifier, a power factor correction module, and a DC-DC conversion module.

8. An emergency test system, characterized in that: It comprises an emergency driving power supply and a driving power supply device as described in any one of claims 1 to 7, wherein the emergency driving power supply is configured with a test dip switch, and the emergency interface of the driving power supply device is configured with a control terminal, which receives the dip signal of the test dip switch.

9. The emergency test system according to claim 8, characterized in that: The emergency drive power supply includes an AC-DC converter, a battery management module, and an emergency conversion module, wherein the battery management module manages the DC power output by the AC-DC converter to charge the emergency battery pack, and the emergency conversion module is configured to connect the discharge circuit of the emergency battery pack to the external load when it detects that the external AC power supply is disconnected, and disconnect the discharge circuit of the emergency battery pack when it detects that the external AC power supply is restored.

10. An emergency lighting system, characterized in that: The device comprises an emergency battery pack, a lighting load and the emergency test system as claimed in claim 8 or 9.

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