Multi-path illumination control module

Abstract

The utility model relates to the technical field of lighting circuits, in particular to a multi-channel lighting control module, which comprises a multi-channel lighting circuit, the multi-channel lighting circuit comprises a transformer Ta1, an LED lamp group A1 and an LED lamp group A2, the LED lamp group A1 and the LED lamp group A2 are electrically connected with the transformer Ta1, the primary side of the transformer Ta1 is electrically connected with a single switch tube S1, the secondary side of the transformer Ta1 is connected with a high-frequency inductor L1 in series, and the secondary side of the transformer Ta1 is connected with a low-frequency inductor L2 in series. And a diode D1 is electrically connected between the transformer Ta1 and the LED lamp group A2. According to the utility model, in a forward loop, the resonant capacitor Cb1 and the high-frequency inductor L1 resonate, so that the diode D2 and the diode D3 work in a zero-current switching state, the reverse recovery loss of the diodes is reduced, the efficiency is improved, and when the voltage drop of two paths of loads is unbalanced, the capacitor Cb1 can still play a role in balancing the load current.

Description

TECHNICAL FIELD

[0001] The utility model relates to a control module, in particular to a kind of multi-path lighting control module, belong to lighting circuit technical field. BACKGROUND

[0002] Multi-path lighting refers to through a kind of equipment or system, multiple lighting areas or equipment can be controlled simultaneously, realize the flexible adjustment and optimization of lighting environment, this equipment or system is usually called multi-path lighting control module.

[0003] Multi-path lighting control module can independently control multiple lighting loops, each loop can be switched on and off, dimmed and the like, which means that users can make personalized settings and controls for different lighting areas according to different needs, high-frequency pulse ac source must be positive-negative symmetrical square wave voltage pulse, the existing multi-circuit control module is simple in structure, and does not have good current-sharing effect, which seriously affects the service life of LED lamp.

[0004] Therefore, it is urgent to improve the multi-path lighting control module to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of multi-path lighting control module, when the primary side switch tube S1 is off, transformer Ta1 releases energy, secondary side passes through diode D1, LED lamp group A2, diode D4 and capacitor Cb1 another current loop is formed, transformer works in flyback state, in forward loop, resonant capacitor Cb1, high-frequency inductor L1 resonates, so that diode D2, diode D3 work in zero-current switching state, reduce the reverse recovery loss of diode, improve efficiency, when the voltage drop of two-way load is unbalanced, capacitor Cb1 still can play the role of balancing load current.

[0006] In order to achieve the above purpose, the main technical scheme of the utility model comprises:

[0007] A kind of multi-path lighting control module, the module includes multi-path lighting circuit, the multi-path lighting circuit includes transformer Ta1 and LED lamp group A1 and LED lamp group A2 electrically connected with the transformer Ta1;

[0008] The primary side of the transformer Ta1 is electrically connected with single switch tube S1, and the secondary side of the transformer Ta1 is connected with high-frequency inductor L1 in series;

[0009] Capacitor Cb1 and diode D3 are electrically connected between the transformer Ta1 and the high-frequency inductor L1, and the LED lamp group A1 is electrically connected with the high-frequency inductor L1;

[0010] The diode D1 is electrically connected between the transformer Ta1 and the LED lamp set A2.

[0011] Preferably, the secondary side of the transformer Ta1 forms a current loop through the capacitor Cb1, the diode D3, the inductor L1, the LED lamp set A1 and the diode D2.

[0012] Preferably, the secondary side of the transformer Ta1 forms a current loop through the diode D1, the LED lamp set A2, the diode D4 and the capacitor Cb1.

[0013] Preferably, the LED lamp set A1 and the LED lamp set A2 each include a plurality of LED lamps.

[0014] Preferably, a MOS tube assembly is electrically connected between the transformer Ta1 and the diode D1, the MOS tube assembly including MOS tubes Q1 and Q2 connected in series, and diodes D5 connected in parallel to the MOS tubes Q1 and Q2.

[0015] Preferably, a compensator PI is electrically connected between the diode D2 and the diode D3, and the compensator PI includes an operational amplifier U1.

[0016] Preferably, capacitors C3 and C4 are connected in parallel to the operational amplifier U1, the capacitors C3 and C4 are electrically connected to the diode D2 through a resistor R1 after being connected in parallel, and a resistor R2 is connected in series to the capacitor C4.

[0017] The utility model at least has the following beneficial effects:

[0018] 1. When the primary side switch tube S1 is turned off, the transformer Ta1 releases energy, the secondary side forms another current loop through the diode D1, the LED lamp set A2, the diode D4 and the capacitor Cb1, the transformer works in a flyback state, in the forward circuit, the resonant capacitor Cb1 and the high-frequency inductor L1 resonate, so that the diode D2 and the diode D3 work in a zero-current switching state, the reverse recovery loss of the diode is reduced, and the efficiency is improved, when the voltage drops of the two-way load are unbalanced, the capacitor Cb1 can still balance the load current.

[0019] 2. When charging, the voltage is greater than or equal to the overcharge cutoff voltage and meets the delay time of the overcharge voltage, the MOS tube Q2 is turned off, the charging circuit is cut off after the MOS tube Q2 is turned off, at this time, the battery can only discharge to protect the overcharge recovery voltage of the IC, and the safety of the circuit is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0021] Figure 1 The circuit diagram of the utility model. DETAILED DESCRIPTION

[0022] The embodiments of the present application will be described in detail below with reference to the accompanying drawings and embodiments, so that the realization process of how to apply technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.

[0023] As Figure 1 shown, the multi-path lighting control module provided by the embodiment includes a multi-path lighting circuit, the multi-path lighting circuit includes a transformer Ta1, an LED lamp group A1 and an LED lamp group A2 electrically connected with the transformer Ta1, a single switch tube S1 electrically connected with the primary side of the transformer Ta1, a high-frequency inductor L1 connected in series with the secondary side of the transformer Ta1, a plurality of LED lamps included in the LED lamp group A1 and the LED lamp group A2, the single switch tube S1 used in the primary side of the transformer, the high-frequency inductor L1 connected in series in a rectifier loop of the secondary side of the transformer, the capacitor Cb1 and the diode D3 electrically connected between the transformer Ta1 and the high-frequency inductor L1, and the high-frequency inductor L1 electrically connected with the LED lamp group A1, the secondary side of the transformer Ta1 forming a current loop through the capacitor Cb1, the diode D3, the inductor L1, the LED lamp group A1 and the diode D2, when the primary side switch tube S1 is turned on, the transformer Ta1 stores energy, the secondary side forms a current loop through the capacitor Cb1, the diode D3, the inductor L1, the LED lamp group A1 and the diode D2, and the transformer works in a forward mode;

[0024] the diode D1 electrically connected between the transformer Ta1 and the LED lamp group A2, the secondary side of the transformer Ta1 forming a current loop through the diode D1, the LED lamp group A2, the diode D4 and the capacitor Cb1, when the primary side switch tube S1 is turned off, the transformer Ta1 releases energy, the secondary side forms another current loop through the diode D1, the LED lamp group A2, the diode D4 and the capacitor Cb1, and the transformer works in a flyback mode;

[0025] In the forward loop, the resonant capacitor Cb1 and the high-frequency inductor L1 resonate, so that the diode D2 and the diode D3 work in a zero-current switching state, the reverse recovery loss of the diode is reduced, and the efficiency is improved, when the voltage drops of the two paths of the load are unbalanced, the capacitor Cb1 can still balance the load current.

[0026] Further, as Figure 1As shown, the MOS tube assembly is electrically connected between the transformer Ta1 and the diode D1, the MOS tube assembly includes the MOS tube Q1 and the MOS tube Q2 arranged in series, and the diode D5 is arranged in parallel on the MOS tube Q1 and the MOS tube Q2. When charging, the voltage is greater than or equal to the overcharge cutoff voltage and meets the delay time of the overcharge voltage, the MOS tube Q2 is closed, and after the MOS tube Q2 is closed, the charging circuit is cut off. At this time, the battery can only discharge to protect the overcharge recovery voltage of the IC, and the safety of the circuit is improved.

[0027] Further, as shown in Figure 1 The diode D2 and the diode D3 are electrically connected with the compensator PI, the compensator PI includes the operational amplifier U1, the capacitor C3 and the capacitor C4 are arranged in parallel on the operational amplifier U1, the capacitor C4 and the capacitor C4 are connected in parallel and are electrically connected with the diode D2 through the resistor R1, the resistor R2 is arranged in series on the capacitor C4, and the value of the resistor R2 or the capacitor C3 and C4 of the compensator PI will change with the change of these factors, thereby effectively offsetting the error and improving the precision of the circuit. The compensator PI can be used to offset the distortion caused by temperature change, improve the linearity and stability of the amplifier.

[0028] As shown in Figure 1 The principle of the multi-channel lighting control module provided by the embodiment is as follows:

[0029] The multi-channel lighting circuit includes the transformer Ta1, the LED lamp group A1 and the LED lamp group A2 electrically connected with the transformer Ta1, the primary side of the transformer Ta1 is electrically connected with the single switch tube S1, the secondary side of the transformer Ta1 is connected in series with the high-frequency inductor L1, the LED lamp group A1 and the LED lamp group A2 each include a plurality of LED lamps, the single switch tube S1 is used for the primary side of the transformer, the high-frequency inductor L1 is connected in series in a rectifier loop of the secondary side of the transformer, the capacitor Cb1 and the diode D3 are electrically connected between the transformer Ta1 and the high-frequency inductor L1, and the high-frequency inductor L1 is electrically connected with the LED lamp group A1, the secondary side of the transformer Ta1 forms a current loop through the capacitor Cb1, the diode D3, the inductor L1, the LED lamp group A1 and the diode D2, when the primary side switch tube S1 is turned on, the transformer Ta1 stores energy, the secondary side forms a current loop through the capacitor Cb1, the diode D3, the inductor L1, the LED lamp group A1 and the diode D2, and the transformer works in a forward state.

[0030] A diode D1 is electrically connected between the transformer Ta1 and the LED lamp set A2, the secondary side of the transformer Ta1 forms a current loop through the diode D1, the LED lamp set A2, the diode D4 and the capacitor Cb1, when the primary side switch tube S1 is turned off, the transformer Ta1 releases energy, the secondary side forms another current loop through the diode D1, the LED lamp set A2, the diode D4 and the capacitor Cb1, and the transformer works in a flyback state;

[0031] In the forward circuit, the resonant capacitor Cb1 and the high-frequency inductor L1 resonate, so that the diode D2 and the diode D3 work in a zero-current switching state, the reverse recovery loss of the diodes is reduced, and the efficiency is improved; when the voltage drops of the two loads are unbalanced, the capacitor Cb1 can still balance the load current.

[0032] As some terms are used in the description and claims, those skilled in the art can understand that different names may be used by hardware manufacturers to refer to the same component. The description and claims of the present application do not distinguish components by name difference, but by functional difference. As mentioned throughout the description and claims, "comprising" is an open term, which should be interpreted as "comprising but not limited to". "Approximately" means within an acceptable error range, and those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0033] It should be noted that the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the goods or systems comprising a series of elements not only include those elements, but also include other elements not explicitly listed, or include elements inherent to such goods or systems. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of another identical element in the goods or system comprising the element.

[0034] The above description shows and describes several preferred embodiments of the present application, but as mentioned above, the present application is not limited to the forms disclosed herein, and should not be considered as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified by the above teachings or related art or knowledge within the scope of the application conceived herein. The modifications and changes made by those skilled in the art without departing from the spirit and scope of the present application shall be within the scope of protection of the appended claims of the present application.

Claims

1. A multiway lighting control module, characterized by The module comprises a multi-channel lighting circuit, the multi-channel lighting circuit comprises a transformer Ta1, an LED lamp group A1 and an LED lamp group A2 electrically connected with the transformer Ta1; The primary side of the transformer Ta1 is electrically connected with a single switch tube S1, and the secondary side of the transformer Ta1 is connected with a high-frequency inductor L1 in series; The transformer Ta1 and the high-frequency inductor L1 are electrically connected with a capacitor Cb1 and a diode D3, and are electrically connected with the LED lamp group A1 through the high-frequency inductor L1; The transformer Ta1 and the LED lamp group A2 are electrically connected with a diode D1.

2. A multi-way lighting control module according to claim 1, wherein: The secondary side of the transformer Ta1 passes through the capacitor Cb1, the diode D3, the inductor L1, the LED lamp group A1 and a diode D2 to form a current loop.

3. A multi-way lighting control module according to claim 1, wherein: The secondary side of the transformer Ta1 passes through the diode D1, the LED lamp group A2, the diode D4 and the capacitor Cb1 to form a current loop.

4. A multi-way lighting control module according to claim 1, wherein: The LED lamp group A1 and the LED lamp group A2 each comprise a plurality of LED lamps.

5. A multi-way lighting control module according to claim 1, wherein: The transformer Ta1 and the diode D1 are electrically connected with a MOS tube assembly, the MOS tube assembly comprises MOS tubes Q1 and Q2 arranged in series, and the MOS tubes Q1 and Q2 are each connected with a diode D5 in parallel.

6. A multi-way lighting control module according to claim 1, wherein: The diode D2 and the diode D3 are electrically connected with a compensator PI, and the compensator PI comprises an operational amplifier U1.

7. A multi-way lighting control module according to claim 6, wherein: The operational amplifier U1 is connected with a capacitor C3 and a capacitor C4 in parallel, the capacitor C3 and the capacitor C4 are connected in parallel and then electrically connected with the diode D2 through a resistor R1, and the capacitor C4 is connected with a resistor R2 in series.

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