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

Abstract

The utility model discloses a kind of driving power supply device, emergency test system and the emergency lighting system with it, driving power supply device includes: configuration is connected external ac power supply AC input interface;Driving circuit, it is configured as the AC power conversion of AC input interface input;DC output interface, it is configured as the DC power output converted to external load;Emergency interface, it is configured with positive voltage end and negative voltage end, the positive voltage end is connected the positive output end of DC output interface by first diode, and the positive voltage end is connected with the anode of first diode;The negative voltage end is connected with the negative output end of DC output interface;The positive voltage end of emergency interface is configured as with the positive drive end of external emergency driving power supply connection, its negative pole is configured as with the negative drive end of external emergency driving power supply connection;Emergency interface is configured as receiving the control signal sent by external emergency driving power supply, to control the working condition of driving power supply device.

Description

Technical Field

[0001] This utility model relates to the field of emergency lighting, and in particular to a driving power supply device, an emergency testing system, and an emergency lighting system having the same. Background Technology

[0002] Conventional LED driver power supplies are used to provide standard DC output, such as 12V / 24V DC, for everyday lighting. If you want to convert a conventional LED light fixture into an emergency lighting device, there are typically two approaches:

[0003] The first method is to install the emergency drive component inside the light fixture, but this will increase the variety and quantity of light fixtures in stock, increasing inventory costs and management difficulty.

[0004] The second method involves reserving a pre-installed plug-in harness for connection to the emergency drive. This requires at least four pairs of harnesses for plugging, which increases cost and assembly complexity.

[0005] The above background information is provided only to aid 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 information was disclosed before the filing date of this application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0006] The purpose of this invention is to provide a driver power supply device that connects to an external emergency driver power supply via an emergency interface, thereby enabling the external emergency driver power supply to control the LED driver power supply device.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A drive power supply device, comprising:

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

[0010] A drive circuit configured to convert AC power input from the AC input interface into DC power;

[0011] A DC output interface, which is configured to output converted DC power to an external load;

[0012] An emergency interface is configured with a positive voltage terminal and a negative voltage terminal. The positive voltage terminal is connected to the positive output terminal of the DC output interface through a first diode, and the positive voltage terminal is connected to the anode of the first diode. The negative voltage terminal is 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 an external emergency drive power supply, and its negative terminal is configured to be connected to the negative drive terminal of an external emergency drive power supply.

[0014] The emergency interface is configured to receive control signals sent by an external emergency power supply to control the operating status of the power supply device.

[0015] Furthermore, following any one or a combination of the aforementioned technical solutions, the driving circuit is configured with an enable chip and a power supply. When the enable chip connects to the power supply, the driving circuit operates; when the enable chip disconnects from the power supply, the driving circuit stops operating.

[0016] Furthermore, in accordance with any or a combination of the aforementioned technical solutions, the driving power supply device further includes a transistor, the base of which is connected to the negative terminal of the first diode, the collector of which is connected to the power supply of the driving circuit, and the emitter of which is grounded.

[0017] Furthermore, in accordance with any or a combination of the aforementioned technical solutions, the emergency interface is also configured with a control terminal, which is configured to be connected to the control signal transmitting terminal of the emergency drive power supply.

[0018] The drive power supply device also includes a transistor, whose base is connected to the control terminal of the emergency interface, whose collector is connected to the power supply of the drive circuit, and whose emitter is grounded.

[0019] Furthermore, following any one or a combination of the aforementioned technical solutions, the control terminal of the emergency interface is configured to receive the DIP switch signal of the emergency drive power supply, wherein the DIP switch signal is divided into a high-level signal and a low-level signal.

[0020] Furthermore, following any one or a combination of the aforementioned technical solutions, the control terminal of the emergency interface is connected to the base of the transistor via a first diode or a second diode, the control terminal is connected to the positive terminal of the diode, and the base is connected to the negative terminal of the diode.

[0021] Furthermore, based on any or a combination of the aforementioned technical solutions, 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 testing system is provided, including an emergency driving power supply and a driving power supply device as described above, wherein the emergency driving power supply is equipped with a test DIP switch, and the emergency interface of the driving power supply device is equipped with a control terminal, which receives the DIP signal from the test DIP switch.

[0023] Furthermore, following any one or a combination of the aforementioned technical solutions, 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 charging of the emergency battery pack using the DC power output from the AC-DC converter. The emergency conversion module is configured to connect the discharge circuit of the emergency battery pack to an external load when an external AC power supply is detected to be disconnected, and to disconnect the discharge circuit of the emergency battery pack when an external AC power supply is detected to be restored.

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

[0025] The beneficial effects of the technical solution provided by this utility model are as follows:

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

[0027] b. The working status of the LED driver power supply can be determined by using a DIP switch on the emergency driver power supply terminal: when the DIP switch outputs a high-level signal, the LED driver power supply can be stopped by controlling the Ctrl control terminal.

[0028] c. During testing, the output of the LED driver power supply can be left on, and an AC power interruption can be simulated by operating the DIP switch on the emergency driver power supply terminal. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A schematic diagram showing the connection between a drive power supply device with an emergency interface and an external emergency drive power supply, provided as an exemplary embodiment of the present invention.

[0031] Figure 2 A schematic diagram of the structure for implementing the working state of the emergency drive power supply control drive power supply device, provided as an exemplary embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of a second structure for implementing the working state of an emergency drive power supply control drive power supply device, provided as an exemplary embodiment of the present invention. Detailed Implementation

[0033] To enable those skilled in the art to better understand the solutions of this application, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present utility model.

[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, apparatus, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0035] In one embodiment of this utility model, a driving power supply device is provided, such as... Figure 1 As shown, the drive power supply device includes:

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

[0037] A drive circuit configured to convert AC power input from the AC input interface into DC power;

[0038] A DC output interface, which is configured to output converted DC power to an external load;

[0039] An emergency interface is configured with a positive voltage terminal and a negative voltage terminal. The positive voltage terminal is connected to the positive output terminal of the DC output interface through a first diode, and the positive voltage terminal is connected to the anode of the first diode. The negative voltage terminal is 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 an external emergency drive power supply, and its negative terminal is configured to be connected to the negative drive terminal of an external emergency drive power supply.

[0041] The emergency interface is configured to receive control signals sent by an external emergency power supply to control the operating status of the power supply device.

[0042] In this embodiment, the driving power supply is an LED driver. When the external AC power supply is working normally, the driving power supply is used to convert the input power (such as 220V AC mains) into a stable current or voltage suitable for 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. The input protection module may include a fuse to prevent short circuit damage, a varistor to absorb surge voltage, an NTC thermistor to suppress surge current during startup, etc. An EMI filter can 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 stepping down (such as 12V / 24V DC voltage) and output it to the external load through the DC output interface.

[0043] The emergency interface is configured to receive control signals from an external emergency power supply to control the operating state of the power supply device, primarily in two ways:

[0044] Method 1, such as Figure 2 As shown, the driving circuit is equipped with an enable chip and a power supply. When the enable chip is connected to the power supply, the driving circuit operates; when the enable chip is disconnected from the power supply, the driving circuit stops operating. The driving power supply device also includes a transistor, the base of which is connected to the negative terminal of the first diode, the collector of which is connected to the power supply of the driving circuit, and the emitter of which is grounded.

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

[0046] Method 2, such as Figure 3As shown, the driving circuit is equipped with an enable chip and a power supply. When the enable chip connects to the power supply, the driving circuit operates; when the enable chip disconnects from the power supply, the driving circuit stops operating. The emergency interface is also equipped with a control terminal, which is configured to connect to the control signal transmitting terminal of the emergency driving power supply. The driving power supply also includes a transistor, whose base is connected to the control terminal of the emergency interface, whose collector is connected to the power supply of the driving circuit, and whose emitter is grounded.

[0047] The control terminal of the emergency interface is configured to receive the DIP switch signal of the emergency drive power supply, which 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 Connect a diode in that way. This diode can be the first diode mentioned above, or it can be a second diode different from the first diode. The control terminal is connected to the positive terminal of the diode, and the base is connected to the negative terminal of the diode.

[0049] The working principle is as follows:

[0050] An emergency power supply is a circuit that controls the connection of an emergency battery pack to the load when the external AC power supply fails. This ensures that the lighting load can still operate even when the mains power fails. In emergencies such as a fire causing a power outage, providing emergency lighting in corridors facilitates the orderly and rapid evacuation of people from the accident scene. Therefore, periodic testing of the emergency power supply is important.

[0051] In this embodiment, a test DIP switch is specially configured on the emergency drive power supply. Even when the mains power is working normally, simply operating the DIP switch to send a high-level signal can simulate a mains power failure: the high-level signal of the DIP switch is applied to the base of the NPN transistor through the diode, which forward biases the base-emitter voltage, turns on the transistor, and then pulls down the voltage of the VCC power supply pin of the enable chip, causing the enable chip to disconnect from the VCC power supply, and thus the drive circuit stops working.

[0052] If the lighting load continues to illuminate when the DIP switch sends a high-level signal, the emergency drive power supply is working normally and the test is passed. If the lighting load fails to illuminate when the DIP switch sends a high-level signal, the emergency drive power supply is faulty and needs to be repaired.

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

[0054] Furthermore, the emergency power supply includes an AC-DC converter, a battery management module, and an emergency conversion module. The battery management module manages the charging of the emergency battery pack using the DC power output from the AC-DC converter. The emergency conversion module is configured to connect the discharge circuit of the emergency battery pack to an external load when an external AC power supply is detected to be disconnected, and to disconnect the discharge circuit of the emergency battery pack when an external AC power supply is detected to be restored. This emergency power supply is prior art, and reference can be made to the publications of Chinese patents / patent applications with publication numbers CN222638220U, CN111194125A, and CN209462675U.

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

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0057] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this 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 drive circuit configured to convert AC power input from the AC input interface into DC power; A DC output interface, which is configured to output converted DC power to an external load; An emergency interface is configured with a positive voltage terminal and a negative voltage terminal. The positive voltage terminal is connected to the positive output terminal of the DC output interface through a first diode, and the positive voltage terminal is connected to the anode of the first diode. The negative voltage terminal is 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 an external emergency drive power supply, and its negative terminal is configured to be connected to the negative drive terminal of an external emergency drive power supply. The emergency interface is configured to receive control signals sent by an external emergency power supply to control the operating status of the power supply device.

2. The driving power supply device according to claim 1, characterized in that, The driving circuit is equipped with an enable chip and a power supply. When the enable chip is connected to the power supply, the driving circuit operates; when the enable chip is disconnected from the power supply, the driving circuit stops operating.

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

4. The driving power supply device according to claim 2, characterized in that, The emergency interface is also equipped with a control terminal, which is configured to be connected to the control signal transmitting 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, whose collector is connected to the power supply of the drive circuit, and whose emitter is grounded.

5. The driving power supply device according to claim 4, characterized in that, The control terminal of the emergency interface is configured to receive the DIP switch signal of the emergency drive power supply, which 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 terminal of the emergency interface is connected to the base of the transistor via a first diode or a second diode. The control terminal is connected to the positive terminal of the diode, and the base is connected to the negative terminal of the diode.

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

8. An emergency testing system, characterized in that, The device includes an emergency drive power supply and a drive power supply device as described in any one of claims 1 to 7, wherein the emergency drive power supply is equipped with a test DIP switch, and the emergency interface of the drive power supply device is equipped with a control terminal that receives the DIP signal from the test DIP switch.

9. The emergency testing system according to claim 8, characterized in that, The emergency power supply includes an AC-DC converter, a battery management module, and an emergency conversion module. The battery management module manages the charging of the emergency battery pack using the DC power output from the AC-DC converter. The emergency conversion module is configured to connect the discharge circuit of the emergency battery pack to an external load when an external AC power supply is detected to be disconnected, and to disconnect the discharge circuit of the emergency battery pack when an external AC power supply is detected to be restored.

10. An emergency lighting system, characterized in that, This includes an emergency battery pack, a lighting load, and an emergency testing system as described in claim 8 or 9.

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