Emergency lighting circuits and lamps
By designing an emergency lamp circuit including rectifier module, control chip, MOS tube, lithium battery and LED module, the problem that existing emergency lamps are difficult to continuously illuminate in the event of power outages, and a compact and efficient lighting effect in complex environments is achieved.
Patent Information
- Application Number
- CN202420574577.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-03-22
AI Technical Summary
In the event of power outage, existing emergency lights are difficult to continuously illuminate, and high-power lighting lamps are large in size and are inconvenient to move, especially in complex environments.
An emergency lamp circuit is designed, including a rectifier module, control chip, MOS tube, lithium battery and LED module. The rectifier module converts the alternating current into DC. The control chip and MOS tube are used in conjunction with each other to ensure that the DC power output from the lithium battery is converted into the working current required by the LED module, and the LED lighting is achieved.
In the event of power outage, power supply through lithium batteries, the coordination of the control chip and MOS tube can maintain the working state of the control chip and light up the LED module to achieve continuous lighting. At the same time, due to the compact design, it is suitable for mobile use in complex environments.
Smart Images
Figure CN222706670U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of emergency circuits, in particular to an emergency light circuit and a light fixture. Background Art
[0002] With the increase in electricity consumption, especially during peak hours, power outages caused by insufficient power supply in the electric field are prone to occur. For large public places, factories or blocks, although simple emergency lights can be used to provide lighting, they will not be able to provide continuous lighting when the power outage lasts for a long time. High-power lighting lamps are large in size, making them inconvenient to move, especially in some complex environments. Utility Model Content
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an emergency light circuit and a lamp, which can realize the lighting function in the event of a power outage.
[0004] The utility model also provides a lamp having the emergency lamp circuit.
[0005] According to the first aspect of the utility model, the emergency light circuit includes: a first power line, a second power line, a wiring output end, a rectifier module, a protection line, a control chip, a transistor, a transformer, a MOS tube, a first capacitor, a lithium battery connection end, a first diode and an LED module, wherein the first power line is connected to the first input end of the rectifier module, the second power line is respectively connected to the second input end of the rectifier module and the second end of the LED module, the output end of the rectifier module is connected to the input end of the control chip, the first end of the relay and the collector of the transistor, and the lithium battery connection end is respectively connected to the second end of the relay. The first capacitor is connected to the cathode end of the first diode, the anode end of the first diode is connected to the primary winding of the transformer and the drain of the MOS tube, the common end of the relay is connected to the wiring output end, the normally closed end of the relay is connected to the protection line, and the normally open end of the relay is connected to the secondary winding of the transformer and the LED module.
[0006] The emergency light circuit according to the embodiment of the utility model has at least the following beneficial effects: the alternating current input from the first power line and the second power line is converted into direct current through the rectifier module, and then the working voltage required for the control chip is provided. When a power outage occurs, the control chip can be powered by the lithium battery to maintain the working state of the control chip. In addition, when a power outage occurs, the control chip can output a high-frequency PWM pulse signal to the gate of the MOS tube through the control terminal with a fixed duty cycle, so that the MOS tube is in an alternating conduction and disconnection state, so that the direct current output by the lithium battery is converted into the working current required for the LED module to work, thereby lighting the LED module.
[0007] According to some embodiments of the utility model, a step-down module is also included, which includes a step-down chip, a second diode, a second capacitor, a first resistor and a first inductor. The input end of the step-down chip is connected to the output end of the rectifier module, the output end of the step-down chip is respectively connected to the negative end of the second diode and the first end of the second capacitor, the positive end of the second diode is respectively connected to the second end of the first inductor, the input end of the control chip, the first end of the relay and the collector of the transistor, the first end of the first inductor is respectively connected to the second end of the second capacitor and the second end of the first resistor, and the first end of the first resistor is connected to the ground end of the step-down chip.
[0008] According to some embodiments of the present invention, a buzzer is further included, wherein a first end of the buzzer is connected to the positive end of the second diode, and a second end of the buzzer is connected to the alarm control end of the control chip.
[0009] According to some embodiments of the present invention, an indicator light module is also included, which includes a switch button, multiple input ports and indicator lights corresponding to the multiple input ports one-to-one, and the multiple input ports are connected to the multiple detection ports of the control chip one-to-one.
[0010] According to some embodiments of the utility model, a voltage regulator diode is included, the positive terminal of the voltage regulator diode is connected to the first end of the relay and the collector of the transistor, and the negative terminal of the voltage regulator diode is connected to the positive terminal of the second diode.
[0011] According to some embodiments of the utility model, it also includes a third diode, a third capacitor and a second resistor, the positive terminal of the third diode is connected to the first end of the secondary winding, the negative terminal of the third diode is respectively connected to the first end of the LED module, the second end of the third capacitor and the second end of the second resistor, the second end of the secondary winding is respectively connected to the first end of the second resistor and the second end of the LED module, and the first end of the third capacitor is connected between the second end of the secondary winding and the second end of the LED module.
[0012] According to some embodiments of the present invention, a fourth diode is further included, wherein a positive terminal of the fourth diode is connected to the first end of the relay, and a negative terminal of the fourth diode is connected to the positive terminal of the second diode.
[0013] According to some embodiments of the utility model, a third resistor and a fourth resistor are also included, the first end of the third resistor is connected to the output end of the rectifier module, the second end of the third resistor is connected to the first end of the fourth resistor, the second end of the fourth resistor is grounded, and the current detection end of the control chip is connected between the second end of the third resistor and the first end of the fourth resistor.
[0014] The lamp according to the second aspect of the present invention comprises a box body and a cover plate, wherein the box body is provided with a lithium battery mounting slot, a circuit board mounting slot and an LED lamp mounting slot, and the outer side of the box body is provided with a first through hole and a second through hole, wherein the first through hole is directly opposite to the lithium battery mounting slot, and the second through hole is directly opposite to the LED lamp mounting slot, the cover plate is used to close the lithium battery mounting slot, and the circuit board mounting slot is used to place the emergency light circuit as described in any of the above embodiments.
[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:
[0017] Figure 1 Schematic diagram of an emergency light circuit according to an embodiment of the present utility model. DETAILED DESCRIPTION
[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0019] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0020] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0021] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0022] Reference Figure 1 In an embodiment of the utility model, the emergency light circuit includes: a first power line 100, a second power line 200, a wiring output end, a rectifier module 300, a protection line 600, a control chip U1, a transistor Q1, a transformer T1, a MOS tube Q2, a first capacitor C1, a lithium battery connection end 800, a first diode D1 and an LED module 700. The first power line 100 is connected to the first input end of the rectifier module 300, the second power line 200 is respectively connected to the second input end of the rectifier module 300 and the second end of the LED module 700, the output end of the rectifier module 300 is connected to the input end of the control chip U1, the first end of the relay K1 and the collector of the transistor Q1, and the lithium battery connection end 800 is respectively connected to the relay K1. The second end of the transformer K1 is connected to the input end of the control chip U1, the primary winding of the transformer T1 is respectively connected to the lithium battery connection end 800 and the drain of the MOS tube Q2, the gate of the MOS tube Q2 is connected to the control end of the control module, the secondary winding of the transformer T1 is connected to the LED module 700, the first capacitor C1 is connected to the negative end of the first diode D1, the positive end of the first diode D1 is connected between the primary winding of the transformer T1 and the drain of the MOS tube Q2, the common end of the relay K1 is connected to the wiring output end, the normally closed end of the relay K1 is connected to the protection line 600, and the normally open end of the relay K1 is connected between the secondary winding of the transformer T1 and the LED module 700, wherein the lithium battery connection end 800 is used to connect a lithium battery.
[0023] It should be noted that the alternating current input from the first power line 100 and the second power line 200 is converted into direct current through the rectifier module 300, and then the working voltage required for the control chip U1 is provided. When a power outage occurs, the control chip U1 can be powered by the lithium battery to maintain the working state of the control chip U1. In addition, when a power outage occurs, the control chip U1 can output a high-frequency PWM pulse signal to the gate of the MOS tube Q2 through the control terminal with a fixed duty cycle, so that the MOS tube Q2 is in an alternating conduction and disconnection state, so that the direct current output by the lithium battery is converted into the working current required for the LED module 700 to work, thereby lighting the LED module 700.
[0024] It should be noted that when the lithium battery is in working state, the normally open end of relay K1 is connected to the common end, and when the lithium battery is in cut-off state, the normally closed end of relay K1 is connected to the common end. The wiring output end can be connected to other devices that need to maintain working state during power outages.
[0025] It can be understood that the emergency light circuit also includes a step-down module 400, which includes a step-down chip U2, a second diode D2, a second capacitor C2, a first resistor R1 and a first inductor L1. The input end of the step-down chip U2 is connected to the output end of the rectifier module 300, and the output end of the step-down chip U2 is respectively connected to the negative end of the second diode D2 and the first end of the second capacitor C2, the positive end of the second diode D2 is respectively connected to the second end of the first inductor L1, the input end of the control chip U1, the first end of the relay K1 and the collector of the transistor Q1, the first end of the first inductor L1 is respectively connected to the second end of the second capacitor C2 and the second end of the first resistor R1, the first end of the first resistor R1 is connected to the ground end of the step-down chip U2, and the DC power rectified and output by the rectifier module 300 can be stepped down through the step-down chip U2 to prevent the subsequent circuit from being damaged by large current.
[0026] It can be understood that the emergency light circuit also includes a buzzer LS1, the first end of the buzzer LS1 is connected to the positive end of the second diode D2, and the second end of the buzzer LS1 is connected to the alarm control end of the control chip U1. When a power outage occurs, the control chip U1 can control the buzzer LS1 to work to remind the user.
[0027] It can be understood that the emergency light circuit also includes an indicator light module 500, which includes a switch button, multiple input ports and indicator lights corresponding to the multiple input ports one-to-one. The multiple input ports are connected one-to-one with the multiple detection ports of the control chip U1. For example, in some embodiments, there are 3 input ports, each of which is connected to an indicator light, and the three indicator lights are all connected to the switch button so that the switch button can control the conduction of the indicator lights. The control chip U1 can control different detection ports to output high-level signals according to different working states to light up different indicator lights, and the user can judge the working state of the emergency light circuit by observing the lighting and extinguishing of the indicator lights.
[0028] It is understandable that the emergency light circuit further includes a Zener diode ZD1, a positive terminal of the Zener diode ZD1 is connected to the first terminal of the relay K1 and the collector of the transistor Q1, and a negative terminal of the Zener diode ZD1 is connected to the positive terminal of the second diode D2.
[0029] It can be understood that the emergency light circuit also includes a third diode D3, a third capacitor C3 and a second resistor R2, the positive terminal of the third diode D3 is connected to the first end of the secondary winding, the negative terminal of the third diode D3 is respectively connected to the first end of the LED module 700, the second end of the third capacitor C3 and the second end of the second resistor R2, the second end of the secondary winding is respectively connected to the first end of the second resistor R2 and the second end of the LED module 700, and the first end of the third capacitor C3 is connected between the second end of the secondary winding and the second end of the LED module 700.
[0030] It can be understood that the emergency light circuit further includes a fourth diode D4, a positive terminal of the fourth diode D4 is connected to the first end of the relay K1, and a negative terminal of the fourth diode D4 is connected to the positive terminal of the second diode D2.
[0031] It can be understood that the emergency light circuit also includes a third resistor R3 and a fourth resistor R4, the first end of the third resistor R3 is connected to the output end of the rectifier module 300, the second end of the third resistor R3 is connected to the first end of the fourth resistor R4, the second end of the fourth resistor R4 is grounded, and the current detection end of the control chip U1 is connected between the second end of the third resistor R3 and the first end of the fourth resistor R4.
[0032] In an embodiment of the second aspect, the lamp includes a box body and a cover plate, the interior of the box body is provided with a lithium battery mounting slot, a circuit board mounting slot and an LED lamp mounting slot, the outer side of the box body is provided with a first through hole and a second through hole, the first through hole is opposite to the lithium battery mounting slot, and the second through hole is opposite to the LED lamp mounting slot, the cover plate is used to close the lithium battery mounting slot, and the circuit board mounting slot is used to place the emergency light circuit as in any of the above embodiments.
[0033] It can be understood that the lithium battery mounting slot is used to place the lithium battery. The lithium battery placed in the lithium battery mounting slot is connected to the lithium battery connection terminal 800 of the emergency light circuit. When the power of the lithium battery is consumed, the user can replace the lithium battery in the lithium battery mounting slot through the first through hole.
[0034] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.
Claims
1. An emergency light circuit, characterized in that: include: A first power line, a second power line, a wiring output end, a rectifier module, a protection line, a control chip, a transistor, a transformer, a MOS tube, a first capacitor, a lithium battery connection end, a first diode and an LED module, wherein the first power line is connected to the first input end of the rectifier module, the second power line is respectively connected to the second input end of the rectifier module and the second end of the LED module, the output end of the rectifier module is connected to the input end of the control chip, the first end of the relay and the collector of the transistor, and the lithium battery connection end is respectively connected to the second end of the relay and the input end of the control chip, The primary winding of the transformer is respectively connected to the lithium battery connection end and the drain of the MOS tube, the gate of the MOS tube is connected to the control end of the control chip, the secondary winding of the transformer is connected to the LED module, the first capacitor is connected to the negative end of the first diode, the positive end of the first diode is connected between the primary winding of the transformer and the drain of the MOS tube, the common end of the relay is connected to the wiring output end, the normally closed end of the relay is connected to the protection line, and the normally open end of the relay is connected between the secondary winding of the transformer and the LED module.
2. The emergency light circuit according to claim 1, characterized in that: It also includes a step-down module, which includes a step-down chip, a second diode, a second capacitor, a first resistor and a first inductor. The input end of the step-down chip is connected to the output end of the rectifier module, the output end of the step-down chip is respectively connected to the negative end of the second diode and the first end of the second capacitor, the positive end of the second diode is respectively connected to the second end of the first inductor, the input end of the control chip, the first end of the relay and the collector of the transistor, the first end of the first inductor is respectively connected to the second end of the second capacitor and the second end of the first resistor, and the first end of the first resistor is connected to the ground end of the step-down chip.
3. The emergency light circuit according to claim 2, characterized in that: It also includes a buzzer, wherein a first end of the buzzer is connected to the positive end of the second diode, and a second end of the buzzer is connected to the alarm control end of the control chip.
4. The emergency light circuit according to claim 1, characterized in that: It also includes an indicator light module, which includes a switch button, multiple input ports and indicator lights corresponding to the multiple input ports one-to-one, and the multiple input ports are connected to the multiple detection ports of the control chip one-to-one.
5. The emergency light circuit according to claim 2, characterized in that: It also includes a voltage-stabilizing diode, a positive terminal of the voltage-stabilizing diode is connected to the first end of the relay and the collector of the transistor, and a negative terminal of the voltage-stabilizing diode is connected to the positive terminal of the second diode.
6. The emergency light circuit according to claim 1, characterized in that: It also includes a third diode, a third capacitor and a second resistor, the positive terminal of the third diode is connected to the first end of the secondary winding, the negative terminal of the third diode is respectively connected to the first end of the LED module, the second end of the third capacitor and the second end of the second resistor, the second end of the secondary winding is respectively connected to the first end of the second resistor and the second end of the LED module, and the first end of the third capacitor is connected between the second end of the secondary winding and the second end of the LED module.
7. The emergency light circuit according to claim 2, characterized in that: A fourth diode is also included, wherein a positive terminal of the fourth diode is connected to the first end of the relay, and a negative terminal of the fourth diode is connected to the positive terminal of the second diode.
8. The emergency light circuit according to claim 1, characterized in that: It also includes a third resistor and a fourth resistor, wherein the first end of the third resistor is connected to the output end of the rectifier module, the second end of the third resistor is connected to the first end of the fourth resistor, the second end of the fourth resistor is grounded, and the current detection end of the control chip is connected between the second end of the third resistor and the first end of the fourth resistor.
9. A lamp, characterized in that: The invention comprises a box body and a cover plate, wherein a lithium battery mounting slot, a circuit board mounting slot and an LED lamp mounting slot are arranged inside the box body, and a first through hole and a second through hole are opened on the outer side of the box body, wherein the first through hole is directly opposite to the lithium battery mounting slot, and the second through hole is directly opposite to the LED lamp mounting slot, the cover plate is used to close the lithium battery mounting slot, and the circuit board mounting slot is used to place the emergency light circuit as claimed in any one of claims 1 to 8.