Lighting control circuit

Abstract

The invention belongs to the technical field of lighting, and discloses a lighting control circuit which comprises a main lighting management unit and an auxiliary lighting management unit, the auxiliary lighting management unit is composed of an auxiliary lighting lamp, a battery control circuit, an auxiliary lighting control circuit and a sensing module, the auxiliary lighting control circuit can adjust the brightness of the auxiliary lighting lamp, and the sensing module can sense the brightness of the auxiliary lighting lamp. The requirements of users on different light intensities are met; the sensing module can automatically control on and off of the auxiliary illuminating lamp according to external environment light and a moving object, the induction self-extinguishing function is achieved, and the purposes of saving energy and being more user-friendly in design are achieved. The battery control circuit supplies power to the auxiliary lighting lamp normally after power failure, lighting is guaranteed not to be interrupted, by combining the three modules, the small night lamp has the multiple functions of being adjustable in brightness, sensing and self-extinguishing, available in power failure and the like, user experience is improved, the application range of the product in different scenes such as daily life, night and power failure is widened, and the small night lamp is worthy of popularization and application. The defects of a traditional small night lamp in the aspects of control convenience, functional diversity and the like are overcome.

Description

Technical Field

[0001] The present invention relates to the field of lighting technology, and in particular to a lighting control circuit. Background Art

[0002] In the field of indoor lighting, products with both light strip and night light functions are widely used. At present, the night light control of such products mostly relies on multiple switching of wall switches to achieve lighting. If the user does not need to use it, he needs to manually turn off the switch again, which makes the existing night lights generally only have a constant light mode, lack of photosensitivity and the ability to sense objects and human bodies, and cannot automatically control the lighting according to the ambient light and surrounding objects, making it difficult to meet energy-saving needs. In addition, the existing night lights are completely dependent on AC power. Once the AC power is interrupted, they will not work, and the usage scenarios are limited. At the same time, the brightness of the existing night lights is fixed and cannot be adjusted, and cannot adapt to the personalized needs of different users for light intensity in different environments. As a result, the existing indoor light strip night light products have obvious deficiencies in terms of control convenience, functional diversity, energy saving, power supply flexibility and brightness adjustment, and urgently need innovation and improvement to enhance user experience. Summary of the invention

[0003] The main purpose of the present invention is to provide a lighting control circuit, which aims to solve the technical problems that the brightness of the night light in the existing products with both light strip and night light functions cannot be adjusted, does not have an induction self-extinguishing function and cannot be used during power outages, resulting in obvious deficiencies in the existing indoor light strip night light products in terms of control convenience, functional diversity, energy saving, power supply flexibility and brightness adjustment.

[0004] In order to achieve the above-mentioned object of the invention, the present invention provides a lighting control circuit, comprising a main lighting management unit, and an auxiliary lighting management unit connected to the main lighting management unit;

[0005] The auxiliary lighting management unit includes an auxiliary lighting lamp, a battery control circuit, an auxiliary lighting control circuit, and a sensor module. The auxiliary lighting lamp is connected to the auxiliary lighting control circuit, and the auxiliary lighting control circuit is used to adjust the brightness of the auxiliary lighting lamp.

[0006] The battery control circuit is connected to the auxiliary lighting lamp through the auxiliary lighting control circuit, and the battery control circuit is used to supply power to the auxiliary lighting lamp normally after a power outage;

[0007] The first end of the sensor module is connected to the main lighting management unit, and the second end of the sensor module is connected to the auxiliary lighting control circuit through the battery control circuit. The sensor module is used to control the on and off state of the auxiliary lighting according to the external ambient light and whether there are moving objects.

[0008] Furthermore, the battery control circuit includes a battery pack, and a charging management circuit, a signal detection circuit and a battery charging circuit respectively connected to the battery pack, the signal detection circuit is used to detect the sensing signal of the sensor module, and control the on and off status of the auxiliary lighting control circuit and the battery pack; the battery charging circuit is used to charge the battery pack; and the charging management circuit is used to control the charging status of the battery pack.

[0009] Further, the battery charging circuit includes a battery charging chip and a filtering battery protection circuit;

[0010] The first end of the battery charging chip is connected to the charging management circuit through a first inductor, and the second end of the battery charging chip is connected to the signal detection circuit and grounded through a first polarized capacitor;

[0011] The first end of the filtering battery protection circuit is connected to the first end of the battery charging chip, and the second end of the filtering battery protection circuit is connected to the second end of the battery charging chip.

[0012] Furthermore, the signal detection circuit includes a detection chip, a voltage stabilizing filter circuit and a decoupling filter circuit;

[0013] The first end of the detection chip is connected to the charging management circuit, and the second end of the detection chip is connected to the second end of the battery charging chip;

[0014] The first end of the voltage stabilizing filter circuit is connected to the positive terminal of the bus, and the second end of the voltage stabilizing filter circuit is connected to the connection line between the second end of the detection chip and the second end of the battery charging chip;

[0015] The first end of the decoupling filter circuit is connected to the connection line between the first end of the detection chip and the charging management circuit, and the second end of the decoupling filter circuit is grounded.

[0016] Furthermore, the charging management circuit includes a charging management chip, a rectification protection circuit and an indication circuit;

[0017] The rectification protection circuit is respectively connected to the first end of the battery charging chip, the first end of the detection chip and the charging management chip;

[0018] The first end of the charging management chip is connected to the positive terminal of the battery pack, and the second end of the charging management chip is connected to the negative terminal of the battery pack and grounded;

[0019] The first end of the indication circuit is connected to the first end of the charging management chip, and the second end of the indication circuit is connected to the second end of the charging management chip.

[0020] Further, the auxiliary lighting control circuit includes an auxiliary lighting control chip, a first transistor and a power switching protection circuit;

[0021] The source of the first transistor is connected to the battery control circuit, and the drain of the first transistor is connected to the first end of the auxiliary lighting control chip through a first resistor;

[0022] The second end of the auxiliary lighting control chip is connected to the power switching protection circuit through a second resistor, the first end of the auxiliary lighting lamp is connected to the second end of the auxiliary lighting control chip, and the second end of the auxiliary lighting lamp is connected to the power switching protection circuit.

[0023] Further, the power switching protection circuit includes a second transistor, a third resistor and a diode group;

[0024] The drain of the second transistor is connected to the second end of the auxiliary lighting lamp, the gate of the second transistor is connected to the first end of the third resistor, and the second end of the third resistor is grounded;

[0025] The first end of the diode group is connected to the connection line between the gate of the second transistor and the first end of the third resistor, and the second end of the diode group is connected to the connection line between the second end of the second resistor and the second end of the auxiliary lighting lamp.

[0026] Further, the main lighting management unit includes a rectifying and filtering circuit, a main lighting control circuit and a main lighting lamp, the rectifying and filtering circuit is connected to the main lighting lamp through the main lighting control circuit, and the rectifying and filtering circuit includes a rectifying diode, a resistor group and a surge circuit;

[0027] The first end of the rectifier diode is used to connect to the mains; the second end of the rectifier diode is respectively connected to the resistor group and the surge circuit, and the resistor group is connected to the surge circuit.

[0028] Furthermore, the main lighting control circuit includes a main lighting control chip, a linear step-down dimming circuit and a filtering phase shift circuit;

[0029] The first end of the main lighting control chip is connected to the first end of the filtering phase shift circuit, and the second end of the filtering phase shift circuit is connected to the first leg of the second end of the rectifying diode;

[0030] The second end of the main lighting control chip is connected to the first end of the linear buck dimming circuit, and the second end of the linear buck dimming circuit is respectively connected to the fourth leg of the second end of the rectifier diode and the main lighting lamp.

[0031] Furthermore, the main lighting management unit also includes a color temperature control circuit;

[0032] The color temperature control circuit includes a multi-position switch and a current distribution circuit, and the multi-position switch is connected to the main lighting lamp through the current distribution circuit.

[0033] Beneficial effects:

[0034] A lighting control circuit of the present invention includes a main lighting management unit and an auxiliary lighting management unit connected to the main lighting management unit; the auxiliary lighting management unit includes an auxiliary lighting lamp, a battery control circuit, an auxiliary lighting control circuit, and a sensor module, the auxiliary lighting lamp is connected to the auxiliary lighting control circuit, and the auxiliary lighting control circuit is used to adjust the brightness of the auxiliary lighting lamp; the battery control circuit is connected to the auxiliary lighting lamp through the auxiliary lighting control circuit, and the battery control circuit is used to supply normal power to the auxiliary lighting lamp after a power outage; the first end of the sensor module is connected to the main lighting management unit, and the second end of the sensor module is connected to the auxiliary lighting control circuit through the battery control circuit, and the sensor module is used to control the on and off state of the auxiliary lighting lamp according to external ambient light and whether there are moving objects. Therefore, by combining the battery control circuit, the auxiliary lighting control circuit and the sensor module and arranging them in the lighting control circuit, the auxiliary lighting control circuit of this circuit can adjust the brightness of the auxiliary lighting lamp, the sensor module realizes the induction self-extinguishing function, and the battery control circuit powers the night light during a power outage, giving the night light a variety of practical functions to meet the lighting needs in different scenarios, thereby realizing the functions of adjustable brightness, induction self-extinguishing, and power outage availability, thereby improving the user experience, integrating multiple functions, and broadening the application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of a battery control circuit according to an embodiment of the present invention;

[0036] Figure 2 A schematic diagram of a battery charging circuit according to an embodiment of the present invention;

[0037] Figure 3 A schematic diagram of a signal detection circuit according to an embodiment of the present invention;

[0038] Figure 4 A schematic diagram of a charging management circuit according to an embodiment of the present invention;

[0039] Figure 5 A schematic diagram of an auxiliary lighting control circuit according to an embodiment of the present invention;

[0040] Figure 6 A schematic diagram of a main lighting management unit according to an embodiment of the present invention;

[0041] Figure 7 A schematic diagram of a rectifier and filter circuit according to an embodiment of the present invention;

[0042] Figure 8 A schematic diagram of a main lighting control circuit according to an embodiment of the present invention;

[0043] Fig. 9 Schematic diagram of a color temperature control circuit and a main lighting lamp according to an embodiment of the present invention.

[0044] in:

[0045] 1. Main lighting management unit; 2. Auxiliary lighting management unit;

[0046] 10. Rectification and filtering circuit; 11. Main lighting control circuit; 12. Color temperature control circuit; 13. Main lighting lamp;

[0047] BD1, rectifier diode; 101, resistor group; 102, surge circuit;

[0048] SW, multi-position switch; 120, current distribution circuit;

[0049] LED5, auxiliary lighting; 20, battery control circuit; 21, auxiliary lighting control circuit; U5, sensor module;

[0050] BAT, battery pack; 201, charging management circuit; 202, signal detection circuit; 203, battery charging circuit;

[0051] 2030, filter battery protection circuit; U4, battery charging chip; L1, first inductor; EC2, first polarized capacitor;

[0052] U6, detection chip; 2020, voltage stabilizing filter circuit; 2021, decoupling filter circuit;

[0053] U7, charging management chip; 2010, rectification protection circuit; 2011, indication circuit;

[0054] 210, power switching protection circuit; U8, auxiliary lighting control chip; Q1, first transistor; RS, first resistor; RVC, second resistor;

[0055] Q10, the second transistor; R5+, the third resistor.

[0056] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0057] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0059] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0061] Reference Figure 1-Figure 6 , this embodiment provides a lighting control circuit, including a main lighting management unit 1, and an auxiliary lighting management unit 2 connected to the main lighting management unit 1;

[0062] The auxiliary lighting management unit 2 includes an auxiliary lighting lamp LED5, a battery control circuit 20, an auxiliary lighting control circuit 21, and a sensor module U5. The auxiliary lighting lamp LED5 is connected to the auxiliary lighting control circuit 21, and the auxiliary lighting control circuit 21 is used to adjust the brightness of the auxiliary lighting lamp LED5;

[0063] The battery control circuit 20 is connected to the auxiliary lighting lamp LED5 through the auxiliary lighting control circuit 21, and the battery control circuit 20 is used to supply power to the auxiliary lighting lamp LED5 normally after a power outage;

[0064] The first end of the sensor module U5 is connected to the main lighting management unit 1, and the second end of the sensor module U5 is connected to the auxiliary lighting control circuit 21 through the battery control circuit 20. The sensor module U5 is used to control the on and off state of the auxiliary lighting LED5 according to the external ambient light and whether there is a moving object.

[0065] In the above embodiments, the lighting control circuit includes a main lighting management unit 1 and an auxiliary lighting management unit 2. The main lighting management unit 1 is responsible for the power supply and control of the main lighting lamp 13. It is powered by the mains electricity and provides power support for the entire system. The auxiliary lighting management unit 2 focuses on the function realization of the night light (i.e., the auxiliary lighting lamp LED5) and consists of multiple key components, specifically including the auxiliary lighting lamp LED5, a battery control circuit 20, an auxiliary lighting control circuit 21, and a sensing module U5. The auxiliary lighting lamp LED5 is used to provide auxiliary lighting at night or under specific conditions. The battery control circuit 20, as the emergency power supply part, includes a battery pack BAT and related control circuits to ensure that the auxiliary lighting lamp LED5 can still be powered when the mains electricity is interrupted. It is connected to the auxiliary lighting lamp LED5 through the auxiliary lighting control circuit 21 to achieve stable power supply for the auxiliary lighting lamp LED5. The auxiliary lighting control circuit 21 is mainly used to adjust the brightness of the auxiliary lighting lamp LED5. It controls the light emission intensity by adjusting the current size to meet the requirements in different scenarios. The sensing module U5 is a chip with built-in light sensing and microwave sensing functions, responsible for controlling the on / off state of the auxiliary lighting lamp LED5 according to the external environmental light and the state of moving objects. The first end of the sensing module U5 is connected to the main lighting management unit 1, and the second end is connected to the auxiliary lighting control circuit 21 through the battery control circuit 20, enabling the sensing module U5 to sense environmental changes in real time and transmit signals to the auxiliary lighting control circuit 21, thereby controlling the working state of the auxiliary lighting lamp LED5. For example, during the day, when the light sensing module detects strong light, the auxiliary lighting lamp LED5 is kept off; at night, when the light sensing module detects weak light and at the same time the microwave sensing module detects a moving object, the auxiliary lighting lamp LED5 is lit and automatically turns off after 90 seconds without a moving object. Therefore, by combining and arranging the battery control circuit 20, the auxiliary lighting control circuit 21, and the sensing module U5 in the lighting control circuit, the auxiliary lighting control circuit 21 of this circuit can adjust the brightness of the auxiliary lighting lamp LED5, the sensing module U5 realizes the function of automatic extinguishing upon sensing, and the battery control circuit 20 powers the night light during a power outage, endowing the night light with multiple practical functions, meeting the lighting requirements in different scenarios, and thus realizing the functions of adjustable brightness, automatic extinguishing upon sensing, and usability during a power outage, improving the user experience, and integrating multiple functions to broaden the application scenarios.

[0066] Referring to Figure 1 , in one embodiment, the battery control circuit 20 includes a battery pack BAT, and a charging management circuit 201, a signal detection circuit 202, and a battery charging circuit 203 that are respectively connected to the battery pack BAT. The signal detection circuit 202 is used to detect the induction signal of the sensing module U5 and control the on / off state of the auxiliary lighting control circuit 21 and the battery pack BAT. The battery charging circuit 203 is used to charge the battery pack BAT. The charging management circuit 201 is used to control the charging state of the battery pack BAT.

[0067] In the above embodiment, the battery control circuit 20 is a key backup power supply part in the lighting system, which is composed of a battery pack BAT, a charging management circuit 201, a signal detection circuit 202 and a battery charging circuit 203. The battery pack BAT serves as an energy storage unit to provide emergency power support for the auxiliary lighting LED5. The charging management circuit 201 is responsible for monitoring and protecting the charging process of the battery pack BAT to prevent overcharging or over-discharging, thereby ensuring the safety and life of the battery pack BAT. The battery charging circuit 203 charges the battery pack BAT through an external power supply. Its core function is to efficiently store electrical energy in the battery pack BAT. The signal detection circuit 202 is used to sense the sensing signal of the sensor module U5 and control the on-off connection between the auxiliary lighting control circuit 21 and the battery pack BAT according to the signal status. The battery pack BAT is respectively connected to the charging management circuit 201, the signal detection circuit 202 and the battery charging circuit 203 to form a complete charging and power supply circuit. The charging management circuit 201 monitors the voltage state of the battery pack BAT and adjusts the output current of the battery charging circuit 203 to avoid overcharging of the battery pack BAT. The signal detection circuit 202 receives a signal from the sensor module U5 (such as ambient light changes or moving object detection). When it is detected that the auxiliary lighting lamp LED5 needs to be lit, the signal detection circuit 202 turns on the connection between the auxiliary lighting control circuit 21 and the battery pack BAT, thereby supplying power to the auxiliary lighting lamp LED5. The entire circuit design is compact and works in coordination, ensuring that the auxiliary lighting lamp LED5 can operate normally under mains power outages or other specific conditions, thereby improving the reliability of the system.

[0068] Reference Figure 1-Figure 2 , in one embodiment, the battery charging circuit 203 includes a battery charging chip U4 and a filtering battery protection circuit 2030;

[0069] The first end of the battery charging chip U4 is connected to the charging management circuit 201 through the first inductor L1, and the second end of the battery charging chip U4 is connected to the signal detection circuit 202 and grounded through the first polarized capacitor EC2;

[0070] A first end of the filtering battery protection circuit 2030 is connected to a first end of the battery charging chip U4, and a second end of the filtering battery protection circuit 2030 is connected to a second end of the battery charging chip U4.

[0071] In the above embodiment, the battery charging circuit 203 mainly includes a battery charging chip U4 and a filtering battery protection circuit 2030, the first end of the battery charging chip U4 is connected to the charging management circuit 201 through the first inductor L1, the second end of the battery charging chip U4 is connected to the signal detection circuit 202 and grounded through the first polarized capacitor EC2, wherein the first end of the battery charging chip U4 includes the first, second, third and fourth pins, the second end of the battery charging chip U4 includes the fifth, sixth, seventh and eighth pins, the second pin of the battery charging chip U4 is connected to the first end of the first inductor L1, the second end of the first inductor L1 is connected to the charging management circuit 201, the fifth, sixth, seventh and eighth pins of the battery charging chip U4 are simultaneously connected in parallel to the first end of the first polarized capacitor EC2 and connected to the positive end of the bus through the diode D8, and the second end of the first polarized capacitor EC2 is connected to the signal detection circuit 202 and grounded;

[0072] The first end of the filter battery protection circuit 2030 is connected to the first end of the battery charging chip U4, and the second end of the filter battery protection circuit 2030 is connected to the second end of the battery charging chip U4. The filter battery protection circuit 2030 includes a diode D9, a diode D10, a polarized capacitor EC3, a resistor R26, and a capacitor C1; the polarized capacitor EC3 and the resistor R26 are connected in parallel, and the first ends of the two are connected to the connection line between the second end of the first inductor L1 and the charging management circuit 201, and the second ends of the two are connected to the connection line between the second end of the first polarized capacitor EC2 and the signal detection circuit 202; the first end of the diode D10 is connected to the connection line between the first end of the first inductor L1 and the second leg of the battery charging chip U4, and the second end of the diode D10 is connected to the connection line between the first polarized capacitor EC2 and the signal detection circuit 202. The second end of capacitor EC2 is connected to the connection line between the signal detection circuit 202; the first end of the diode D9 is connected to the first leg of the battery charging chip U4, and the second end of the diode D9 is connected to the connection line between the second end of the first inductor L1 and the charging management circuit 201; the first end of the capacitor C1 is connected to the connection line between the first end of the diode D9 and the first leg of the battery charging chip U4, and the second end of the capacitor C1 is connected to the connection line between the second leg of the battery charging chip U4 and the first end of the first inductor L1. Therefore, through the combination of the battery charging chip U4 and the filtering battery protection circuit 2030, the high-frequency noise in the input current can be effectively filtered, the stability of the charging process can be improved, the damage to the battery pack BAT can be reduced, the occurrence of reverse current and overvoltage can be effectively prevented, and the system safety can be improved.

[0073] Reference Figure 1-Figure 3 In one embodiment, the signal detection circuit 202 includes a detection chip U6, a voltage stabilizing filter circuit 2020 and a decoupling filter circuit 2021;

[0074] The first end of the detection chip U6 is connected to the charging management circuit 201, and the second end of the detection chip U6 is connected to the second end of the battery charging chip U4;

[0075] The first end of the voltage stabilizing filter circuit 2020 is connected to the positive terminal of the bus, and the second end of the voltage stabilizing filter circuit 2020 is connected to the connection line between the second end of the detection chip U6 and the second end of the battery charging chip U4;

[0076] The first end of the decoupling filter circuit 2021 is connected to the connection line between the first end of the detection chip U6 and the charging management circuit 201 , and the second end of the decoupling filter circuit 2021 is grounded.

[0077] In the above embodiment, the signal detection circuit 202 includes a detection chip U6, a voltage stabilizing filter circuit 2020 and a decoupling filter circuit 2021. The detection chip U6 is a core component responsible for receiving the signal from the sensor module U5 and controlling the on / off between the battery pack BAT and the auxiliary lighting LED5 according to the signal state. Its first end (including the first, second, fourth and fifth pins) is connected to the charging management circuit 201, and the second end (including the third, sixth, seventh and eighth pins) is connected to the second end of the battery charging chip U4, thereby forming a complete signal transmission path. The first pin of the detection chip U6 is connected to the charging management circuit 201 for receiving power input; the second pin is connected to the second pin of the sensor module U5 for receiving the sensing signal from the sensor module U5; the seventh pin is connected to the positive end of the bus through the voltage stabilizing filter circuit 2020 for stabilizing the voltage; the eighth pin is connected to the second end of the battery charging chip U4 to transmit the processed signal to the battery charging chip U4. At the same time, the first leg of the sensor module U5 is connected to the main lighting management unit 1, and the third leg is connected between the first leg of the detection chip U6 and the charging management circuit 201 to ensure accurate signal transmission;

[0078] The voltage stabilizing filter circuit 2020 includes a resistor R27, a capacitor C2, a voltage stabilizing diode ZD1A, a resistor R27A, and a resistor R27B; the resistor R27, the capacitor C2, and the voltage stabilizing diode ZD1A are connected in parallel, the first ends of the three are connected to the positive end of the bus, and the second ends of the three are connected to the connection line between the eighth leg of the detection chip U6 and the second end of the battery charging chip U4, and the resistor R27A and the resistor R27B are connected in series, the first ends of the two are connected to the positive end of the bus, and the second ends of the two are connected to the three (resistor R27, capacitor C2, voltage stabilizing diode ZD1A). The seventh leg of the detection chip U6 is connected to the first end of the three (resistor R27, capacitor C2, and voltage stabilizing diode ZD1A); the decoupling filter circuit 2021 includes a capacitor CA and a capacitor CB, and the capacitor CA and the capacitor CB are connected in parallel, and the first ends of the two are connected to the connection line between the first end of the detection chip U6 and the charging management circuit 201, and the second ends of the two are grounded. Through the combination of the detection chip U6 and the voltage stabilizing filter circuit 2020, the noise in the input signal can be effectively filtered, the accuracy of signal detection is improved, and the occurrence of false operation is avoided.

[0079] Reference Figure 1-Figure 4 In one embodiment, the charging management circuit 201 includes a charging management chip U7, a rectification protection circuit 2010 and an indication circuit 2011;

[0080] The rectification protection circuit 2010 is respectively connected to the first end of the battery charging chip U4, the first end of the detection chip U6 and the charging management chip U7;

[0081] A first end of the charging management chip U7 is connected to the positive terminal of the battery pack BAT, and a second end of the charging management chip U7 is connected to the negative terminal of the battery pack BAT and is grounded;

[0082] The first end of the indication circuit 2011 is connected to the first end of the charging management chip U7, and the second end of the indication circuit 2011 is connected to the second end of the charging management chip U7.

[0083] In the above embodiment, the charging management circuit 201 includes a charging management chip U7, a rectifier protection circuit 2010 and an indication circuit 2011. The charging management chip U7 is a core component responsible for controlling the charging state of the battery pack BAT. Its first end (including the fifth, sixth, seventh and eighth pins) is connected to the positive terminal of the battery pack BAT, and the second end (including the first, second, third and fourth pins) is connected to the negative terminal of the battery pack BAT and grounded. The fourth pin of the charging management chip U7 is connected to the negative terminal of the battery pack BAT and grounded through two parallel capacitors C3 and C4 for filtering; the first pin is connected to the negative terminal of the battery pack BAT and the grounding line through a resistor R30 for detecting current; the second pin is connected to the negative terminal of the battery pack BAT and the grounding line through a resistor R29 for further stabilizing the circuit; the third pin is directly grounded;

[0084] The rectifier protection circuit 2010 is composed of a diode DM and a diode DA, which prevents reverse current and protects the circuit. The first end of the diode DM is connected to the fourth pin of the charging management chip U7, and the second end is connected to the first pin of the detection chip U6; the first end of the battery charging chip U4 is connected between the first end of the diode DM and the fourth pin of the charging management chip U7, the first end of the diode DA is connected to the fifth pin of the charging management chip U7, and the second end is connected between the second end of the diode DM and the first pin of the detection chip U6 to ensure the stability of signal transmission; the indicator circuit 2011 is composed of light-emitting diodes LED3 and LED4, which are used to display the charging status. The first end of LED3 is connected to the sixth pin of the charging management chip U7. , the first end of LED4 is connected to the seventh pin, and the second ends of the two are connected and connected to the fifth pin of the charging management chip U7. In addition, the charging management circuit 201 also includes a capacitor C6, a first end of which is connected between the fifth pin of the charging management chip U7 and the positive terminal of the battery pack BAT, and a second end is connected between the fourth pin of the charging management chip U7 and the negative terminal of the battery pack BAT, which is used to further smooth the voltage fluctuation. The third pin of the charging management chip U7 (pin 3 of U7) is the control current pin, and the conduction current is adjusted by detecting the resistor RS, thereby controlling the current of the night light and realizing the brightness adjustment function. Through the precise control of the charging management chip U7, it can effectively prevent the battery pack BAT from being overcharged or over-discharged, extend the battery life, and improve the system safety.

[0085] Reference Figure 1 , Figure 5 In one embodiment, the auxiliary lighting control circuit 21 includes an auxiliary lighting control chip U8, a first transistor Q1 and a power switching protection circuit 210;

[0086] The source of the first transistor Q1 is connected to the battery control circuit 20, and the drain of the first transistor Q1 is connected to the first end of the auxiliary lighting control chip U8 through the first resistor RS;

[0087] The second end of the auxiliary lighting control chip U8 is connected to the power switching protection circuit 210 through a second resistor RVC, the first end of the auxiliary lighting lamp LED5 is connected to the second end of the auxiliary lighting control chip U8, and the second end of the auxiliary lighting lamp LED5 is connected to the power switching protection circuit 210.

[0088] In the above embodiment, the auxiliary lighting control circuit 21 includes an auxiliary lighting control chip U8, a first transistor Q1 and a power switching protection circuit 210. The auxiliary lighting control chip U8 is a core component responsible for receiving signals and controlling current output. Its first end (including the first, second and third pins) is connected to the drain of the first transistor Q1 through the first resistor RS, and the second end (including the fourth and fifth pins) is connected to the power switching protection circuit 210 through the second resistor RVC, and directly drives the auxiliary lighting lamp LED5. The first transistor Q1 is an N-channel MOS tube, and its source is connected to the battery control circuit 20, and the drain is connected to the first end (the third pin) of the auxiliary lighting control chip U8 through the first resistor RS. The first pin and the second pin of the auxiliary lighting control chip U8 are simultaneously connected to the connection line between the second end of the first resistor RS and the drain of the first transistor Q1, which is used to receive input signals and control the current flow direction. The first end of the auxiliary lighting control chip U8 Four pins are connected to the power switching protection circuit 210 through the second resistor RVC, the fifth pin is directly connected to the first end of the auxiliary lighting lamp LED5 (one end of LED5), and the second end of the auxiliary lighting lamp LED5 is connected to the power switching protection circuit 210, forming a parallel relationship with the second resistor RVC. In addition, when the 7th pin of U6 detects a low level through R27A, R27B, R27, ZD1, and C2, the sensor module U5 outputs a high level to the 2nd pin of U6, and the 6th pin of U6 then outputs a high level, so that the first transistor Q1G1 is turned on. At this time, the positive electrode of the lithium battery passes through the first transistor Q1Q10 to power the auxiliary lighting control chip U8U7, forming a complete loop and lighting the auxiliary lighting lamp LED5. Through the cooperation of the auxiliary lighting control chip U8 and the first transistor Q1, the current flowing through the auxiliary lighting lamp LED5 can be accurately adjusted, thereby realizing flexible adjustment of the brightness to meet the needs of different scenarios.

[0089] Reference Figure 1 , Figure 5 In one embodiment, the power switching protection circuit 210 includes a second transistor Q10, a third resistor R5+ and a diode group;

[0090] The drain of the second transistor Q10 is connected to the second end of the auxiliary lighting lamp LED5, the gate of the second transistor Q10 is connected to the first end of the third resistor R5+, and the second end of the third resistor R5+ is grounded;

[0091] The first end of the diode group is connected to the connection line between the gate of the second transistor Q10 and the first end of the third resistor R5+, and the second end of the diode group is connected to the connection line between the second end of the second resistor RVC and the second end of the auxiliary lighting lamp LED5.

[0092] In the above embodiment, the power switching protection circuit 210 includes a second transistor Q10, a third resistor R5+ and a diode group. The second transistor Q10 is an N-channel MOS tube, the drain of which is connected to the second end of the auxiliary lighting lamp LED5, the gate is grounded through the third resistor R5+, the source is connected to the positive electrode of the battery, and a diode is built in to prevent overvoltage damage. The third resistor R5+ plays a current limiting role, the first end of which is connected to the gate of the second transistor Q10, and the second end is grounded; the diode group includes a diode D10, a diode D11 and a capacitor C5+, which are used to further protect the circuit and provide stable voltage support. The first end of the diode D10 is connected between the gate of the second transistor Q10 and the first end of the third resistor R5+, and the second end is connected to the first end of the capacitor C5+ and connected to the 5V+ voltage; the second end of the capacitor C5+ is connected to the second end of the third resistor R5+ and the ground line, and is used to filter and smooth voltage fluctuations. The first end of the diode D11 is connected between the first end of the diode D10 and the first end of the capacitor C5+, and the second end is connected between the second end of the second resistor RVC and the second end of the auxiliary lighting lamp LED5, forming a complete current loop.

[0093] When the wall switch is turned off, U5 is a module with built-in light and microwave sensors. During the day, the light sensor causes U5's pin 2 to output a low level, so U6 always outputs a low level, causing G1 (the first transistor Q1) to not conduct, and the night light remains off. At night, the light sensor resistance becomes smaller. After U5 detects a moving object, its pin 2 outputs a high level, and U6's pin 6 then outputs a high level, turning G1 on. The lithium battery current flows to the auxiliary lighting LED5 through the second transistor Q10, lighting the night light. If no moving object is detected within 90 seconds, U5's pin 2 outputs a low level again, and U6's pin 6 also outputs a low level, G1 is disconnected, and the night light is off. Through the cooperation of the second transistor Q10 and the third resistor R5+, the current flow can be accurately controlled to ensure the safe operation of the auxiliary lighting LED5, while avoiding damage caused by excessive current or voltage fluctuations, thereby improving the reliability of the overall system and user experience.

[0094] Reference Figure 1 , Figure 6-Figure 7In one embodiment, the main lighting management unit 1 includes a rectifying and filtering circuit 10, a main lighting control circuit 11 and a main lighting lamp 13, the rectifying and filtering circuit 10 is connected to the main lighting lamp 13 through the main lighting control circuit 11, and the rectifying and filtering circuit 10 includes a rectifying diode BD1, a resistor group 101 and a surge circuit 102;

[0095] The first end of the rectifier diode BD1 is used to connect to the mains; the second end of the rectifier diode BD1 is respectively connected to the resistor group 101 and the surge circuit 102 , and the resistor group 101 is connected to the surge circuit 102 .

[0096] In the above embodiment, the main lighting management unit 1 is responsible for converting the AC power into direct current suitable for the operation of the main lighting lamp 13, and driving the main lighting lamp 13 through the main lighting control circuit 11. The main lighting management unit 1 mainly includes a rectifier filter circuit 10, a main lighting control circuit 11 and a main lighting lamp 13, wherein the rectifier filter circuit 10 is composed of a rectifier diode BD1, a resistor group 101 and a surge circuit 102; the rectifier diode BD1 is used to convert the AC AC power into a unidirectional pulsating DC power, and its first end (including the second and third legs) is respectively connected to the L end (through the fuse FR1) and the N end of the AC power, and the second end (including the first and fourth legs) is connected to the subsequent circuit, the second leg of the rectifier diode BD1 is connected to the L end of the AC power through the fuse FR1, and the third leg is connected to the N end of the AC power, the resistor group 101 is composed of three resistors RC, RA and RB connected in parallel, which play the role of current limiting and voltage dividing, and the first end of the resistor group 101 is connected to It is connected to the fourth leg of the rectifier diode BD1, and the second end is connected to the first end of the diode RV1 in the surge circuit 102; the surge circuit 102 is composed of a diode RV1 and a capacitor CB, and is used to filter out voltage fluctuations after rectification and limit the voltage within a safe range. The first end of the diode RV1 is connected to the second end of the resistor group 101, and the second end is connected to the connection line between the first leg of the rectifier diode BD1 and the main lighting control circuit 11 and is grounded. The first end of the capacitor CB is connected to the connection line between the first end of the resistor group 101 and the main lighting control circuit 11, and the second end is connected to the connection line between the first leg of the rectifier diode BD1 and the main lighting control circuit 11 and is grounded. Through the design of the rectifier and filter circuit 10, the AC power can be effectively converted into stable DC power, ensuring the normal operation of the main lighting lamp 13, and can provide users with efficient and stable lighting support in various environments, thereby improving the performance of the overall system and user experience.

[0097] Reference Figure 1 , Figure 6-Figure 8 In one embodiment, the main lighting control circuit 11 includes a main lighting control chip, a linear buck dimming circuit and a filtering phase shift circuit;

[0098] The first end of the main lighting control chip is connected to the first end of the filtering phase shift circuit, and the second end of the filtering phase shift circuit is connected to the first leg of the second end of the rectifier diode BD1;

[0099] The second end of the main lighting control chip is connected to the first end of the linear buck dimming circuit, and the second end of the linear buck dimming circuit is respectively connected to the fourth leg of the second end of the rectifier diode BD1 and the main lighting lamp 13 .

[0100] In the above embodiment, the main lighting control circuit 11 includes a main lighting control chip, a linear step-down dimming circuit and a filtering phase shifting circuit, wherein the main lighting control circuit 11 is formed by three identical circuits connected in parallel, and the number of main lighting control chips is also three (U1, U2, U3); this embodiment is illustrated by taking the main lighting control chip U1 as an example, the first end of the main lighting control chip includes the first, second, third and fourth pins, the second end of the main lighting control chip includes the fifth, sixth, seventh and eighth pins, the filtering phase shifting circuit includes a resistor R5, a resistor R6, a resistor R7 and a capacitor CV; the first pin of the main lighting control chip is connected between the first pin of the rectifier diode BD1 and the On the grounded connection line, the second leg of the main lighting control chip is connected to the first end of the resistor R5, the second end of the resistor R5 is connected to the first end of the resistor R6, the second end of the resistor R6 is connected to the first leg of the rectifier diode BD1 and the grounded connection line, the resistors R5 and R6 are connected in series, the third leg of the main lighting control chip is connected to the first end of the resistor R7, the fourth leg of the main lighting control chip is connected to the first end of the capacitor CV, the second end of the capacitor CV is connected to the second end of the resistor R6 and the grounded line, the second end of the resistor R7 is connected to the line between the second end of the resistor R6 and the second end of the capacitor CV, and the resistors R6 and R7 are connected in parallel;

[0101] The linear step-down dimming circuit includes a resistor R3, a resistor R4, a capacitor CB, a diode D1, a resistor R21, and a polarized capacitor EC1. The sixth pin of the main lighting control chip is connected to the negative terminal of the main lighting lamp 13. At the same time, the sixth pin of the main lighting control chip is also connected to the first pin of the rectifier diode BD1 through the diode TVS1. The seventh pin of the main lighting control chip is connected to the positive terminal of the main lighting lamp 13 through the resistor R3 and the diode D1 in sequence. The eighth pin of the main lighting control chip is connected to the first end of the resistor R4. The second end of the resistor R4 is connected to the line between the resistor R3 and the diode D1. The first end of the capacitor CB is connected to the connection line between the eighth pin of the main lighting control chip and the first end of the resistor R4. The capacitor CB The second end is connected to the first leg of the main lighting control chip, the resistor R21 and the polarized capacitor EC1 are connected in parallel, the first ends of the two are connected to the connection line between the diode D1 and the positive terminal of the main lighting lamp 13, and the second ends of the two are connected to the connection line between the sixth leg of the main lighting control chip and the negative terminal of the main lighting lamp 13. Therefore, through the design of the filtering phase shifting circuit, the phase of the input signal can be effectively adjusted and high-frequency noise can be filtered out, thereby improving the stability of the circuit. Secondly, the addition of the linear step-down dimming circuit provides a stable current output for the main lighting lamp 13, avoiding damage caused by voltage fluctuations. In addition, the multi-channel parallel design of the main lighting control chip enhances the reliability of the system, and can continue to operate stably under high load conditions.

[0102] Reference Figure 1 , Figure 6-Figure 9 , in one embodiment, the main lighting management unit 1 further includes a color temperature control circuit 12;

[0103] The color temperature control circuit 12 includes a multi-position switch SW and a current distribution circuit 120 . The multi-position switch SW is connected to the main lighting lamp 13 through the current distribution circuit 120 .

[0104] In the above embodiment, the main lighting management unit 1 also includes a color temperature control circuit 12, the color temperature control circuit 12 includes a multi-position switch SW and a current distribution circuit 120, the multi-position switch SW is connected to the main lighting lamp 13 through the current distribution circuit 120, wherein the multi-position switch SW is a six-position switch including the first, second, third, fourth, fifth, and sixth legs, the main lighting lamp 13 is two including light-emitting diodes LED1 and LED2, the current distribution circuit 120 includes a diode D2, a diode D3, a diode D4, a diode D5, a diode D6, a diode D7 and resistors R22, R23, and R24. The diode D2, the resistor R22 and the diode D3 are sequentially connected in series to form a first color temperature mixing circuit of the current distribution circuit 120, the resistor R23, the diode D4, the resistor R24 ​​and the diode D5 are sequentially connected in series to form a second color temperature mixing circuit of the current distribution circuit 120, and the first color temperature mixing circuit and the second color temperature mixing circuit are connected in parallel. The first leg of the multi-position switch SW is connected to the first end of the light emitting diode LED1 and to the LEDC- end in the color temperature control circuit 12, and the second end of the light emitting diode LED1 is connected to the main lighting control circuit 11;

[0105] The second leg of the multi-position switch SW is respectively connected to the first end of the first color temperature mixing circuit and the second color temperature mixing circuit, the fifth leg of the multi-position switch SW is respectively connected to the second end of the first color temperature mixing circuit and the second color temperature mixing circuit, the fourth leg of the multi-position switch SW is connected to the line between the resistor R22 and the diode D3, the sixth leg of the multi-position switch SW is connected to the first end of the diode D7 and to the LEDW- end in the color temperature control circuit 12, the second end of the diode D7 is connected to the connection line between the diode D5 and the fifth leg of the multi-position switch SW, the first end of the light emitting diode LED2 is connected to the connection line between the sixth leg of the multi-position switch SW and the first end of the diode D7, and the light emitting diode L The second end of ED2 is connected to the main lighting control circuit 11, the first end of the diode D6 is connected to the connection line between the first leg of the multi-position switch SW and the first end of the light-emitting diode LED1, the second end of the diode D6 is connected to the connection line between the second leg of the multi-position switch SW and the second end of the resistor R23 in the second group of color temperature mixing circuits, and the third leg of the multi-position switch SW is connected to the LED-end. Therefore, through the selection function of the multi-position switch SW, the user can easily switch between different color temperature modes to meet diverse needs. Secondly, the design of the current distribution circuit 120 accurately adjusts the current ratio flowing through LED1 and LED2, realizes the dynamic mixing of cold white light and warm white light, and provides a smooth color temperature transition effect.

[0106] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A lighting control circuit, characterized in that: It includes a main lighting management unit, and an auxiliary lighting management unit connected to the main lighting management unit; The auxiliary lighting management unit includes an auxiliary lighting lamp, a battery control circuit, an auxiliary lighting control circuit, and a sensor module. The auxiliary lighting lamp is connected to the auxiliary lighting control circuit, and the auxiliary lighting control circuit is used to adjust the brightness of the auxiliary lighting lamp. The battery control circuit is connected to the auxiliary lighting lamp through the auxiliary lighting control circuit, and the battery control circuit is used to supply power to the auxiliary lighting lamp normally after a power outage; The first end of the sensor module is connected to the main lighting management unit, and the second end of the sensor module is connected to the auxiliary lighting control circuit through the battery control circuit. The sensor module is used to control the on and off state of the auxiliary lighting according to the external ambient light and whether there are moving objects.

2. The lighting control circuit according to claim 1, characterized in that: The battery control circuit includes a battery pack, and a charging management circuit, a signal detection circuit and a battery charging circuit respectively connected to the battery pack, the signal detection circuit is used to detect the sensing signal of the sensor module, and control the on and off status of the auxiliary lighting control circuit and the battery pack; the battery charging circuit is used to charge the battery pack; and the charging management circuit is used to control the charging status of the battery pack.

3. The lighting control circuit according to claim 2, characterized in that: The battery charging circuit includes a battery charging chip and a filtering battery protection circuit; The first end of the battery charging chip is connected to the charging management circuit through a first inductor, and the second end of the battery charging chip is connected to the signal detection circuit and grounded through a first polarized capacitor; The first end of the filtering battery protection circuit is connected to the first end of the battery charging chip, and the second end of the filtering battery protection circuit is connected to the second end of the battery charging chip.

4. The lighting control circuit according to claim 3, characterized in that: The signal detection circuit includes a detection chip, a voltage stabilization filter circuit and a decoupling filter circuit; The first end of the detection chip is connected to the charging management circuit, and the second end of the detection chip is connected to the second end of the battery charging chip; The first end of the voltage stabilizing filter circuit is connected to the positive terminal of the bus, and the second end of the voltage stabilizing filter circuit is connected to the connection line between the second end of the detection chip and the second end of the battery charging chip; The first end of the decoupling filter circuit is connected to the connection line between the first end of the detection chip and the charging management circuit, and the second end of the decoupling filter circuit is grounded.

5. The lighting control circuit according to claim 4, characterized in that: The charging management circuit includes a charging management chip, a rectification protection circuit and an indication circuit; The rectification protection circuit is respectively connected to the first end of the battery charging chip, the first end of the detection chip and the charging management chip; The first end of the charging management chip is connected to the positive terminal of the battery pack, and the second end of the charging management chip is connected to the negative terminal of the battery pack and grounded; The first end of the indication circuit is connected to the first end of the charging management chip, and the second end of the indication circuit is connected to the second end of the charging management chip.

6. The lighting control circuit according to claim 1, characterized in that: The auxiliary lighting control circuit includes an auxiliary lighting control chip, a first transistor and a power switching protection circuit; The source of the first transistor is connected to the battery control circuit, and the drain of the first transistor is connected to the first end of the auxiliary lighting control chip through a first resistor; The second end of the auxiliary lighting control chip is connected to the power switching protection circuit through a second resistor, the first end of the auxiliary lighting lamp is connected to the second end of the auxiliary lighting control chip, and the second end of the auxiliary lighting lamp is connected to the power switching protection circuit.

7. The lighting control circuit according to claim 6, characterized in that: The power switching protection circuit includes a second transistor, a third resistor and a diode group; The drain of the second transistor is connected to the second end of the auxiliary lighting lamp, the gate of the second transistor is connected to the first end of the third resistor, and the second end of the third resistor is grounded; The first end of the diode group is connected to the connection line between the gate of the second transistor and the first end of the third resistor, and the second end of the diode group is connected to the connection line between the second end of the second resistor and the second end of the auxiliary lighting lamp.

8. The lighting control circuit according to claim 1, characterized in that: The main lighting management unit includes a rectifying and filtering circuit, a main lighting control circuit and a main lighting lamp, the rectifying and filtering circuit is connected to the main lighting lamp through the main lighting control circuit, and the rectifying and filtering circuit includes a rectifying diode, a resistor group and a surge circuit; The first end of the rectifier diode is used to connect to the mains; the second end of the rectifier diode is respectively connected to the resistor group and the surge circuit, and the resistor group is connected to the surge circuit.

9. The lighting control circuit according to claim 8, characterized in that: The main lighting control circuit includes a main lighting control chip, a linear step-down dimming circuit and a filtering phase shift circuit; The first end of the main lighting control chip is connected to the first end of the filtering phase shift circuit, and the second end of the filtering phase shift circuit is connected to the first leg of the second end of the rectifying diode; The second end of the main lighting control chip is connected to the first end of the linear buck dimming circuit, and the second end of the linear buck dimming circuit is respectively connected to the fourth leg of the second end of the rectifier diode and the main lighting lamp.

10. The lighting control circuit according to claim 8, characterized in that: The main lighting management unit also includes a color temperature control circuit; The color temperature control circuit includes a multi-position switch and a current distribution circuit, and the multi-position switch is connected to the main lighting lamp through the current distribution circuit.

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