BOOST voltage boosting and multiplying emergency lamp circuit

Abstract

The utility model discloses a BOOST voltage-boosting and voltage-multiplying emergency lamp circuit, which comprises a main control module, and a battery BAT, an LED module, a Boost module and a voltage-multiplying boosting module which are electrically connected with the main control module respectively, the Boost module comprises an inductor L1, an MOS tube Q1, a diode D1 and a capacitor C1, the positive electrode of the battery BAT is used for inputting charging voltage, the negative electrode of the battery BAT is grounded, one end of the inductor L1 is electrically connected with the positive electrode of the battery BAT, the other end of the inductor L1 is electrically connected with the positive electrode of the diode D1 and the drain electrode of the MOS tube Q1, the source electrode of the MOS tube Q1 is grounded, the grid electrode of the MOS tube Q1 is electrically connected with the PWM signal end of the main control module, and the capacitor C1 is connected with the capacitor C1. One end of the capacitor C1 is connected with the negative electrode of the diode D1, and the negative electrode of the capacitor C1 is grounded; the voltage-multiplying boosting module comprises an MOS tube Q2, a resistor R1, a diode D2 and a capacitor C2. According to the BOOST voltage boosting and multiplying emergency lamp circuit, voltage multiplication is achieved through combination of Boost and voltage multiplying, the utilization efficiency of a battery is effectively improved, and the working time of a lamp is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency power supply, in particular to a BOOST voltage-doubling emergency lamp circuit. Background Art

[0002] With the improvement of safety awareness, the importance of fire emergency lights in the field of public safety has become increasingly prominent. Traditional fire emergency lights mostly use transformer boost circuits, but the transformer is too large and occupies the limited storage space of the lamp, which limits the flexibility of PCB board layout. Therefore, there is an urgent need for a fire emergency lamp that can provide portability and higher efficiency while reducing manufacturing costs. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art and to provide a BOOST voltage-doubling emergency light circuit which is cost-saving and highly reliable.

[0004] According to the BOOST voltage-doubling emergency light circuit of the embodiment of the utility model, it includes a main control module and a battery BAT, an LED module, a Boost voltage-doubling module, and a voltage-doubling boost module, which are electrically connected to the main control module respectively; the Boost voltage-doubling module includes an inductor L1, a MOS tube Q1, a diode D1, and a capacitor C1; the positive electrode of the battery BAT is used to input a charging voltage, the negative electrode of the battery BAT is grounded, one end of the inductor L1 is electrically connected to the positive electrode of the battery BAT, the other end of the inductor L1 is electrically connected to the positive electrode of the diode D1 and the drain of the MOS tube Q1 respectively, the source of the MOS tube Q1 is grounded, and the gate of the MOS tube Q1 is connected to the main control module. The PWM signal end is electrically connected, one end of the capacitor C1 is connected to the cathode of the diode D1, and the cathode of the capacitor C1 is grounded; the voltage doubling boost module includes a MOS tube Q2, a resistor R1, a diode D2, and a capacitor C2, the source of the MOS tube Q2 is electrically connected to one end of the capacitor C1, one end of the resistor R1 is electrically connected to the anode of the battery BAT, the other end of the resistor R1 is electrically connected to the gate of the MOS tube Q2, the anode of the diode D2 is electrically connected to the drain of the MOS tube Q2, the cathode of the diode D2 and one end of the capacitor C2 are respectively electrically connected to the anode of the LED module to power the LED module, and the other end of the capacitor C2 is electrically connected to the anode of the diode D1.

[0005] According to some embodiments of the present invention, the Boost module includes a fuse F2 , one end of the fuse F2 is connected to the positive electrode of the battery BAT, and the other end of the fuse F2 is connected to one end of the inductor L1 .

[0006] According to some embodiments of the present invention, the voltage doubling and boosting module further includes a diode D3, the anode of the diode D3 is electrically connected to the cathode of the diode D2 and one end of the capacitor C2, respectively, and the cathode of the diode D3 is electrically connected to the LED module.

[0007] According to some embodiments of the present invention, a filter capacitor C3 is further included, and a filter capacitor C8 is connected in parallel with the LED module to filter the output voltage.

[0008] According to some embodiments of the present invention, a boost sampling module is also included, which includes a resistor R3 and a resistor R4, one end of the resistor R3 and one end of the resistor R4 are electrically connected to the negative electrode of the LED module respectively, the other end of the resistor R4 is electrically connected to the signal feedback end of the main control module, and the other end of the resistor R3 is grounded.

[0009] According to some embodiments of the present invention, the boost sampling module further includes a capacitor C4, one end of the capacitor C4 is electrically connected to the other end of the resistor R4, and the other end of the capacitor C4 is grounded.

[0010] According to some embodiments of the utility model, a battery charging module is also included, which includes a transistor Q3, a resistor R5, and a resistor R6. The collector of the transistor Q3 is input with a 5V voltage via a series resistor, the base of the transistor Q3 is electrically connected to one end of the resistor R5, the other end of the resistor R5 is electrically connected to one end of the resistor R6 and the main control module, the other end of the resistor R6 is grounded, and the emitter of the transistor Q3 is connected to the positive electrode of the battery.

[0011] According to some embodiments of the present invention, a battery sampling module is further included, the battery sampling module includes a sampling resistor R20 and a sampling resistor R21 connected in series, and two ends of the battery sampling module are respectively connected in parallel with two ends of the battery BAT; the sampling resistor R20 and the sampling resistor R21 are electrically connected to the AD sampling end of the main control module.

[0012] According to some embodiments of the present invention, a communication module electrically connected to the main control module is further included, and the main control module communicates with the fire control system through the communication module to detect the status of the fire emergency lighting in real time.

[0013] The BOOST voltage-doubling emergency light circuit according to the embodiment of the utility model has at least the following beneficial effects: the BOOST voltage-doubling emergency light circuit combines the Boost voltage-boosting module with the voltage-doubling boosting module, and only needs to control the switch of the Boost voltage-boosting module to increase the low voltage of the battery BAT to the intermediate voltage level. The capacitor C1 is used to provide input power to the voltage-doubling boosting module, and the voltage-doubling boosting module is used to further increase the intermediate voltage to the required working voltage. The voltage is doubled by combining the Boost voltage-boosting and the voltage-doubling boosting, which effectively improves the utilization efficiency of the battery and extends the working time of the lamp. The circuit is simple to implement and makes full use of the characteristics of each component. Compared with the traditional transformer voltage-boosting circuit, the entire circuit elements are reduced, the layout area of ​​the PCB board is reduced, the layout is more flexible, the lamp design is compact, the installation is convenient, and the manufacturing cost is lower.

[0014] 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

[0015] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings;

[0016] Figure 1 This is the structural block diagram of the BOOST voltage-doubler emergency light circuit;

[0017] Figure 2 This is the schematic diagram of the BOOST voltage-doubling emergency light circuit. DETAILED DESCRIPTION

[0018] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[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] Reference Figure 1 and Figure 2 The utility model discloses a BOOST voltage-doubling emergency light circuit, including a main control module 40 and a battery BAT, an LED module 10, a Boost voltage-doubling module 20 and a voltage-doubling boost module 30, which are electrically connected to the main control module 40 respectively. The main control module 40 adopts an existing main control chip with a battery management function. The Boost voltage-doubling module 20 includes an inductor L1, a MOS tube Q1, a diode D1 and a capacitor C1. The positive electrode of the battery BAT is used to input a charging voltage, the negative electrode of the battery BAT is grounded, one end of the inductor L1 is electrically connected to the positive electrode of the battery BAT, the other end of the inductor L1 is electrically connected to the positive electrode of the diode D1 and the drain of the MOS tube Q1 respectively, the source of the MOS tube Q1 is grounded, the gate of the MOS tube Q1 is electrically connected to the PWM signal end of the main control module 40, the PWM signal provides a level signal for the control end of the MOS tube Q1 to control the conduction and cutoff of the MOS tube Q1, one end of the capacitor C1 is connected to the diode D1 and the capacitor C1 is connected to the positive electrode of the battery BAT. The cathode of the LED module 10 is connected to the cathode of the LED module 10, and the cathode of the capacitor C1 is grounded; the voltage doubling boost module 30 includes a MOS tube Q2, a resistor R1, a diode D2, and a capacitor C2, the source of the MOS tube Q2 is electrically connected to one end of the capacitor C1, one end of the resistor R1 is electrically connected to the anode of the battery BAT, the other end of the resistor R1 is electrically connected to the gate of the MOS tube Q2, the anode of the diode D2 is electrically connected to the drain of the MOS tube Q2, the cathode of the diode D2 and one end of the capacitor C2 are electrically connected to the anode of the LED module 10 respectively to supply power to the LED module 10, and the other end of the capacitor C2 is electrically connected to the anode of the diode D1. When the Boost boost module 20 and the voltage doubling boost module 30 are boosting, the MOS tube Q2 is in a conducting state, and when the Boost boost module 20 and the voltage doubling boost module 30 are in a static state, the MOS tube Q2 is in a cut-off state to prevent the battery from discharging current, causing the battery to be in a power-deficient state for a long time, thereby protecting the battery.

[0022] The BOOST voltage-doubling emergency light circuit combines the Boost module 20 with the voltage-doubling module 30. It only needs to control the switch of the Boost module 20 to increase the low voltage of the battery BAT to the intermediate voltage level. The capacitor C1 is used to provide input power to the voltage-doubling module 30. The voltage-doubling module 30 is used to further increase the intermediate voltage to the required working voltage. The voltage is doubled by combining the Boost and voltage-doubling, which effectively improves the utilization efficiency of the battery and extends the working time of the lamp. The circuit is simple to implement and makes full use of the characteristics of each component. Compared with the traditional transformer boost circuit, the number of circuit elements is reduced, the layout area of ​​the PCB board is reduced, the layout is more flexible, the lamp design is compact, the installation is convenient, and the manufacturing cost is lower.

[0023] Furthermore, the Boost module 20 includes a fuse F2 , one end of which is connected to the positive electrode of the battery BAT, and the other end of which is connected to one end of the inductor L1 to protect the circuit.

[0024] Furthermore, the voltage doubling and boosting module 30 also includes a diode D3, the anode of the diode D3 is electrically connected to the cathode of the diode D2 and one end of the capacitor C2 respectively, the cathode of the diode D3 is electrically connected to the LED module 10, and the diode D3 has the functions of rectifying and preventing current reverse.

[0025] Furthermore, a filter capacitor C3 and a filter capacitor C8 are connected in parallel with the LED module 10 to filter the output voltage.

[0026] In some embodiments, a boost sampling module 50 is also included, and the boost sampling module 50 includes a resistor R3 and a resistor R4, one end of the resistor R3 and one end of the resistor R4 are electrically connected to the negative electrode of the LED module 10 respectively, and the other end of the resistor R4 is electrically connected to the signal feedback end of the main control module 40, and the other end of the resistor R3 is grounded to sample the voltage signal in the boost process and feed it back to the main control module 40.

[0027] Furthermore, the boost sampling module 50 further includes a capacitor C4, one end of the capacitor C4 is electrically connected to the other end of the resistor R4, and the other end of the capacitor C4 is grounded, and the capacitor C4 plays a filtering role.

[0028] In some embodiments, a battery charging module 60 is also included. The battery charging module 60 includes a transistor Q3, a resistor R5, and a resistor R6. The collector of the transistor Q3 inputs a 5V voltage through a series resistor, the base of the transistor Q3 is electrically connected to one end of the resistor R5, the other end of the resistor R5 is electrically connected to one end of the resistor R6 and the main control module 40 respectively, the other end of the resistor R6 is grounded, and the emitter of the transistor Q3 is connected to the positive electrode of the battery. When the main power supply is working normally, the main control module 40 controls the transistor Q3 to be turned on to charge the battery BAT.

[0029] Furthermore, it also includes a battery sampling module 70, which includes a sampling resistor R20 and a sampling resistor R21 connected in series, and the two ends of the battery sampling module 70 are respectively connected in parallel with the two ends of the battery BAT; the sampling resistor R20 and the sampling resistor R21 are electrically connected to the AD sampling end of the main control module 40 to sample the battery voltage signal during the charging process. That is, when the main power supply is interrupted, the main control module 40 automatically switches to the emergency mode, and controls the Boost boost module 20 and the voltage doubling boost module 30 to work, and power the LED module 10. When the main power supply is normal, the main control module 40 is connected to the battery charging module 60 to form a battery charging management to charge the battery to a full power state.

[0030] In some embodiments, a communication module electrically connected to the main control module 40 is further included. The main control module 40 communicates with the fire control system through the communication module to detect the status of the fire emergency lighting in real time.

[0031] It is easy for those skilled in the art to understand that the above preferred embodiments can be freely combined and superimposed without conflict.

[0032] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A BOOST voltage-doubling emergency light circuit, characterized in that: include: A main control module (40), and a battery BAT, an LED module (10), a Boost module (20), and a voltage doubling module (30) electrically connected to the main control module (40); The Boost module (20) comprises an inductor L1, a MOS tube Q1, a diode D1 and a capacitor C1; the positive electrode of the battery BAT is used to input a charging voltage; the negative electrode of the battery BAT is grounded; one end of the inductor L1 is electrically connected to the positive electrode of the battery BAT; the other end of the inductor L1 is electrically connected to the positive electrode of the diode D1 and the drain of the MOS tube Q1 respectively; the source of the MOS tube Q1 is grounded; the gate of the MOS tube Q1 is electrically connected to the PWM signal terminal of the main control module (40); one end of the capacitor C1 is connected to the negative electrode of the diode D1; and the negative electrode of the capacitor C1 is grounded; The voltage doubling and boosting module (30) comprises a MOS tube Q2, a resistor R1, a diode D2, and a capacitor C2; the source of the MOS tube Q2 is electrically connected to one end of the capacitor C1; one end of the resistor R1 is electrically connected to the positive electrode of a battery BAT; the other end of the resistor R1 is electrically connected to the gate of the MOS tube Q2; the positive electrode of the diode D2 is electrically connected to the drain of the MOS tube Q2; the negative electrode of the diode D2 and one end of the capacitor C2 are respectively electrically connected to the positive electrode of the LED module (10) to supply power to the LED module (10); and the other end of the capacitor C2 is electrically connected to the positive electrode of the diode D1.

2. The BOOST voltage-doubling emergency light circuit according to claim 1 is characterized in that: The Boost module (20) comprises a fuse F2, one end of the fuse F2 is connected to the positive electrode of the battery BAT, and the other end of the fuse F2 is connected to one end of the inductor L1.

3. The BOOST voltage-doubling emergency light circuit according to claim 1 is characterized in that: The voltage doubling and boosting module (30) further comprises a diode D3, the anode of the diode D3 being electrically connected to the cathode of the diode D2 and one end of the capacitor C2 respectively, and the cathode of the diode D3 being electrically connected to the LED module (10).

4. The BOOST voltage-doubling emergency light circuit according to claim 1 is characterized in that: It also includes a filter capacitor C3, and a filter capacitor C8 is connected in parallel with the LED module (10) to filter the output voltage.

5. The BOOST voltage-doubling emergency light circuit according to claim 1 is characterized in that: It also includes a boost sampling module (50), the boost sampling module (50) including a resistor R3 and a resistor R4, one end of the resistor R3 and one end of the resistor R4 are respectively electrically connected to the negative electrode of the LED module (10), the other end of the resistor R4 is electrically connected to the signal feedback end of the main control module (40), and the other end of the resistor R3 is grounded.

6. The BOOST voltage-doubling emergency light circuit according to claim 5 is characterized in that: The boost sampling module (50) further comprises a capacitor C4, one end of the capacitor C4 is electrically connected to the other end of the resistor R4, and the other end of the capacitor C4 is grounded.

7. The BOOST voltage-doubling emergency light circuit according to claim 1 is characterized in that: It also includes a battery charging module (60), the battery charging module (60) includes a transistor Q3, a resistor R5, and a resistor R6, the collector of the transistor Q3 inputs a 5V voltage via a series resistor, the base of the transistor Q3 is electrically connected to one end of the resistor R5, the other end of the resistor R5 is electrically connected to one end of the resistor R6 and the main control module (40), the other end of the resistor R6 is grounded, and the emitter of the transistor Q3 is connected to the positive electrode of the battery.

8. The BOOST voltage-doubling emergency light circuit according to claim 1 is characterized in that: It also comprises a battery sampling module (70), the battery sampling module (70) comprising a sampling resistor R20 and a sampling resistor R21 connected in series, the two ends of the battery sampling module (70) being respectively connected in parallel with the two ends of the battery BAT; the sampling resistor R20 and the sampling resistor R21 are electrically connected to the AD sampling end of the main control module (40).

9. The BOOST voltage-doubling emergency light circuit according to claim 1 is characterized in that: It also comprises a communication module electrically connected to the main control module (40), and the main control module (40) communicates with the fire control system via the communication module to detect the status of the fire emergency lighting fixture in real time.

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