Rechargeable double-color magnifier lighting circuit

Abstract

The utility model relates to the technical field of magnifying glass lighting, in particular to a rechargeable double-color magnifying glass lighting circuit, which comprises a battery charging and discharging protection module, a voltage stabilization output module and an LED lighting module which are sequentially connected. Wherein the battery charging and discharging protection module comprises a resistor R1, a light emitting diode DR, a chip U1, a resistor R2, a capacitor C1, a capacitor C2, a battery, a first charging input interface and a second charging input interface, and the resistor R1, the light emitting diode DR, the chip U1, the resistor R2, the capacitor C1, the capacitor C2, the battery, the first charging input interface and the second charging input interface are respectively connected through circuit board wiring. According to the utility model, the adopted circuit is the 5V charging input of the USB, the charging is convenient, and the LED illuminating lamp beads are low in power consumption and high in light efficiency, so that the service time is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of magnifying glass lighting, in particular to a rechargeable two-color magnifying glass lighting circuit. Background Art

[0002] LED has been rapidly developed in various industries in recent years due to its many advantages such as environmental protection, long life, and high photoelectric efficiency. Currently, for application scenarios such as magnifying glasses that require small-scale lighting, non-rechargeable power sources (such as button batteries, etc.) are usually used for power supply. The disadvantages of this power supply method are very obvious. Not only is it frequently replaced, which is troublesome to replace, the lighting is unstable, and discarded batteries will also cause environmental pollution. Other similar circuits that use lighting also have disadvantages such as complicated principles and many peripheral components, which cannot meet the requirements. Utility Model Content

[0003] The utility model aims to provide a rechargeable two-color magnifying glass lighting circuit to solve the problems pointed out in the background technology.

[0004] The embodiment of the utility model is realized by the following technical scheme: a rechargeable two-color magnifying glass lighting circuit, comprising a battery charging and discharging protection module, a voltage stabilizing output module and an LED lighting module, wherein the battery charging and discharging protection module, the voltage stabilizing output module and the LED lighting module are connected in sequence;

[0005] The battery charge and discharge protection module includes: a resistor R1, a light emitting diode DR, a chip U1, a resistor R2, a capacitor C1, a capacitor C2, a battery, a first charging input interface, and a second charging input interface;

[0006] The first end of the resistor R1 is connected to the first charging input interface, the second end of the resistor R1 is connected to the first end of the light-emitting diode DR, the second end of the light-emitting diode DR is connected to interface No. 1 of the chip U1, interface No. 2 of the chip U1 is grounded, interface No. 3 of the chip U1, the positive electrode of the capacitor C2, and the voltage-stabilizing output module are respectively connected to interface No. 2 of the battery, interface No. 1 of the battery is grounded, the second charging input interface is respectively connected to interface No. 4 of the chip U1 and the positive electrode of the capacitor C1, the negative electrode of the capacitor C1 and the negative electrode of the capacitor C2 are respectively grounded, interface No. 6 of the chip U1 is connected to the first end of the resistor R2, and the second end of the resistor R2 is grounded.

[0007] According to a preferred embodiment, the voltage-stabilized output module includes: a capacitor C3, a chip U2, a resistor R3, an inductor L, a switch SW and a capacitor C4, and the capacitor C3, the chip U2, the resistor R3, the inductor L, the switch SW and the capacitor C4 are respectively connected via circuit board wiring.

[0008] According to a preferred embodiment, interface No. 3 of the chip U1, the positive electrode of capacitor C2, the first end of capacitor C3, and interface No. 1 of chip U2 are respectively connected to interface No. 2 of the battery, the second end of the capacitor C3 is grounded, interface No. 2 of the chip U2 is grounded, interface No. 3 of the chip U2 is connected to the first end of the resistor R3, the second end of the resistor R3 is connected to static contact No. 1 of the switch SW, the moving contact No. 2 of the switch SW is grounded, static contact No. 3 and static contact No. 4 of the switch SW are respectively connected to the LED lighting module, interface No. 4 of the chip U2 is respectively connected to the first end of the inductor L, the first end of the capacitor C4 and the LED lighting module, interface No. 6 of the chip U2 is connected to the second end of the inductor L, and the second end of the capacitor C4 is grounded.

[0009] According to a preferred embodiment, the LED lighting module includes: a resistor RZ1, a resistor RZ2, a resistor RZ3, a resistor RZ4, a resistor RZ5, a resistor RZ6, a resistor RD1, a resistor RD2, a resistor RD3, a resistor RD4, a resistor RD5, a resistor RD6, a diode Z1, a diode Z2, a diode Z3, a diode Z4, a diode Z5, a diode Z6, a diode D1, a diode D2, a diode D3, a diode D4, a diode D5 and a diode D6, and the resistor RZ1, a resistor RZ2, a resistor RZ3, a resistor RZ4, a resistor RZ5, a resistor RZ6, a resistor RD1, a resistor RD2, a resistor RD3, a resistor RD4, a resistor RD5, a resistor RD6, a diode Z1, a diode Z2, a diode Z3, a diode Z4, a diode Z5, a diode Z6, a diode D1, a diode D2, a diode D3, a diode D4, a diode D5 and a diode D6 are respectively connected via circuit board wiring.

[0010] According to a preferred embodiment, the first end of the diode Z1, the first end of the diode Z2, the first end of the diode Z3, the first end of the diode Z4, the first end of the diode Z5 and the first end of the diode Z6 are respectively connected to the No. 3 static contact of the switch SW, the first end of the diode D1, the first end of the diode D2, the first end of the diode D3, the first end of the diode D4, the first end of the diode D5 and the first end of the diode D6 are respectively connected to the No. 4 static contact of the switch SW, the second end of the diode Z1 is connected to the first end of the resistor RZ1, the second end of the diode Z2 is connected to the first end of the resistor RZ2, the second end of the diode Z3 is connected to the first end of the resistor RZ3, the second end of the diode Z4 is connected to the first end of the resistor RZ4, the second end of the diode Z5 is connected to the first end of the resistor RZ5, and the second end of the diode Z6 is connected to the first end of the resistor RZ6. The first end is connected, the second end of the diode D1 is connected to the first end of the resistor RD1, the second end of the diode D2 is connected to the first end of the resistor RD2, the second end of the diode D3 is connected to the first end of the resistor RD3, the second end of the diode D4 is connected to the first end of the resistor RD4, the second end of the diode D5 is connected to the first end of the resistor RD5, the second end of the diode Z6 is connected to the first end of the resistor RZ6, the second end of the resistor RZ1, the second end of the resistor RZ2, the second end of the resistor RZ3, the second end of the resistor RZ4, the second end of the resistor RZ5, the second end of the resistor RZ6, the second end of the resistor RD1, the second end of the resistor RD2, the second end of the resistor RD3, the second end of the resistor RD4, the second end of the resistor RD5, the second end of the resistor RD6, the first end of the capacitor C4 and the first end of the inductor are respectively connected to interface No. 4 of the chip U2.

[0011] According to a preferred embodiment, the chip U1 is a charge and discharge protection chip, and the PL4054 model is selected.

[0012] According to a preferred implementation, the chip U2 is a DC-DC buck chip, and the PW5057 model is selected.

[0013] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects: the circuit is a 5V charging input of USB, which is convenient for charging; the charge and discharge protection IC is a PL4054 chip U1, which has battery reverse connection protection and linear charging management functions; the circuit has a charging indication function: DR is red and goes out when fully charged; the DC-DC step-down chip U2 in the circuit adopts PW5057, which has a wide input voltage range (2.2~5V), a high operating frequency, and an efficiency of up to 95%; the 3.3V voltage-stabilized output module ensures the stability of the LED lighting effect and extends the service life; both ICs are packaged in SO-23, which is small in size and has a low static current, thereby enhancing the battery life; in addition to the chip, this circuit has very few peripheral devices, only 9 components, which saves PCB space; the LED lighting lamp beads use low-power, high-light efficiency LED lamp beads to increase the use time; the lighting function realized by this circuit is: dial to 3 for purple light, dial to 1 for off, and dial to 4 for white light. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The circuit diagram of the rechargeable two-color magnifying glass lighting circuit provided in Example 1 of the utility model. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0016] Example 1

[0017] like Figure 1 As shown, this embodiment provides a rechargeable two-color magnifying glass lighting circuit, including: a battery charging and discharging protection module, a voltage stabilizing output module and an LED lighting module, wherein the battery charging and discharging protection module, the voltage stabilizing output module and the LED lighting module are connected in sequence.

[0018] In one implementation of the present embodiment, the battery charge and discharge protection module includes: a resistor R1, a light emitting diode DR, a chip U1, a resistor R2, a capacitor C1, a capacitor C2, a battery, a first charging input interface, and a second charging input interface. The resistor R1, the light emitting diode DR, the chip U1, the resistor R2, the capacitor C1, the capacitor C2, the battery, the first charging input interface, and the second charging input interface are respectively connected via circuit board wiring; wherein the chip U1 is a charge and discharge protection chip, and a PL4054 model with battery reverse connection protection and linear charging management functions is selected.

[0019] Preferably, the specific connection relationship of the battery charge and discharge protection module is as follows:

[0020] The first end of the resistor R1 is connected to the first charging input interface. In one implementation of the present embodiment, the circuit is a USB 5V charging input, which is convenient for charging; the second end of the resistor R1 is connected to the first end of the light-emitting diode DR, and the second end of the light-emitting diode DR is connected to the No. 1 interface of the chip U1. In one implementation of the present embodiment, the light-emitting diode DR is a red charging indicator light, which automatically goes out when fully charged; the No. 2 interface of the chip U1 is grounded, the No. 3 interface of the chip U1, the positive electrode of the capacitor C2, and the voltage-stabilizing output module are respectively connected to the No. 2 interface of the battery, the No. 1 interface of the battery is grounded, the second charging input interface is respectively connected to the No. 4 interface of the chip U1 and the positive electrode of the capacitor C1, the negative electrode of the capacitor C1 and the negative electrode of the capacitor C2 are respectively grounded, the No. 6 interface of the chip U1 is connected to the first end of the resistor R2, and the second end of the resistor R2 is grounded.

[0021] In one implementation of the present embodiment, the voltage-stabilized output module includes: a capacitor C3, a chip U2, a resistor R3, an inductor L, a switch SW and a capacitor C4, wherein the capacitor C3, the chip U2, the resistor R3, the inductor L, the switch SW and the capacitor C4 are respectively connected via circuit board wiring; wherein the chip U2 is a DC-DC step-down chip, the PW5057 model is selected, the input voltage range is wide (2.2 to 5V), the operating frequency is high, and the efficiency is as high as 95%. Both ICs are packaged in SO-23, which is small in size and has a low quiescent current, thereby increasing the battery life. The 3.3V voltage-stabilized output module ensures the stability of the LED lighting effect and extends the service life.

[0022] Preferably, the specific connection relationship of the battery charge and discharge protection module is as follows:

[0023] Interface No. 3 of the chip U1, the positive electrode of the capacitor C2, the first end of the capacitor C3, and interface No. 1 of the chip U2 are respectively connected to interface No. 2 of the battery, the second end of the capacitor C3 is grounded, interface No. 2 of the chip U2 is grounded, interface No. 3 of the chip U2 is connected to the first end of the resistor R3, the second end of the resistor R3 is connected to static contact No. 1 of the switch SW, the moving contact No. 2 of the switch SW is grounded, static contact No. 3 and static contact No. 4 of the switch SW are respectively connected to the LED lighting module, interface No. 4 of the chip U2 is respectively connected to the first end of the inductor L, the first end of the capacitor C4 and the LED lighting module, interface No. 6 of the chip U2 is connected to the second end of the inductor L, and the second end of the capacitor C4 is grounded.

[0024] In one implementation manner of the present embodiment, the LED lighting module includes: a resistor RZ1, a resistor RZ2, a resistor RZ3, a resistor RZ4, a resistor RZ5, a resistor RZ6, a resistor RD1, a resistor RD2, a resistor RD3, a resistor RD4, a resistor RD5, a resistor RD6, a diode Z1, a diode Z2, a diode Z3, a diode Z4, a diode Z5, a diode Z6, a diode D1, a diode D2, a diode D3, a diode D4, a diode D5 and a diode D6, and the resistor RZ1, a resistor RZ2, a resistor RZ3, a resistor RZ4, a resistor RZ5, a resistor RZ6, a resistor RD1, a resistor RD2, a resistor RD3, a resistor RD4, a resistor RD5, a resistor RD6, a diode Z1, a diode Z2, a diode Z3, a diode Z4, a diode Z5, a diode Z6, a diode D1, a diode D2, a diode D3, a diode D4, a diode D5 and a diode D6 are respectively connected via circuit board wiring.

[0025] Preferably, the specific connection relationship of the LED lighting modules is as follows:

[0026] The first end of the diode Z1, the first end of the diode Z2, the first end of the diode Z3, the first end of the diode Z4, the first end of the diode Z5 and the first end of the diode Z6 are respectively connected to the No. 3 static contact of the switch SW, the first end of the diode D1, the first end of the diode D2, the first end of the diode D3, the first end of the diode D4, the first end of the diode D5 and the first end of the diode D6 are respectively connected to the No. 4 static contact of the switch SW, the second end of the diode Z1 is connected to the first end of the resistor RZ1, the second end of the diode Z2 is connected to the first end of the resistor RZ2, the second end of the diode Z3 is connected to the first end of the resistor RZ3, the second end of the diode Z4 is connected to the first end of the resistor RZ4, the second end of the diode Z5 is connected to the first end of the resistor RZ5, and the second end of the diode Z6 is connected to the first end of the resistor RZ6 The second end of the diode D1 is connected to the first end of the resistor RD1, the second end of the diode D2 is connected to the first end of the resistor RD2, the second end of the diode D3 is connected to the first end of the resistor RD3, the second end of the diode D4 is connected to the first end of the resistor RD4, the second end of the diode D5 is connected to the first end of the resistor RD5, the second end of the diode Z6 is connected to the first end of the resistor RZ6, the second end of the resistor RZ1, the second end of the resistor RZ2, the second end of the resistor RZ3, the second end of the resistor RZ4, the second end of the resistor RZ5, the second end of the resistor RZ6, the second end of the resistor RD1, the second end of the resistor RD2, the second end of the resistor RD3, the second end of the resistor RD4, the second end of the resistor RD5, the second end of the resistor RD6, the first end of the capacitor C4 and the first end of the inductor are respectively connected to interface No. 4 of the chip U2.

[0027] The lighting function of the above-mentioned LED lighting module is: when the moving contact 2 is moved to connect with the static contact 3, the purple light turns on; when the moving contact 2 is moved to connect with the static contact 1, the light 1 is turned off; when the moving contact 2 is moved to connect with the static contact 4, the white light turns on.

[0028] The rechargeable two-color magnifying glass lighting circuit provided in the embodiment has the following advantages:

[0029] 1. The circuit uses USB 5V charging input, which is convenient for charging;

[0030] 2. The charge and discharge protection IC is PL4054 chip U1, which has battery reverse connection protection and linear charging management functions;

[0031] 3. The circuit has a charging indication function: DR is red and turns off when fully charged;

[0032] 4. The DC-DC step-down chip U2 in the circuit adopts PW5057, which has a wide input voltage range (2.2~5V), high operating frequency and an efficiency of up to 95%;

[0033] 5. The 3.3V voltage-stabilized output module ensures the stability of LED lighting effect and prolongs its service life;

[0034] 6. Both ICs adopt SO-23 package, which is small in size and has low quiescent current, thus enhancing the battery life.

[0035] 7. In addition to the chip, this circuit has very few peripheral devices, only 9 components, saving PCB space;

[0036] 8. LED lighting lamp beads use low power consumption and high light efficiency LED lamp beads to increase the use time;

[0037] 9. The lighting function realized by this circuit is: dial to 3 for purple light, dial to 1 for off, and dial to 4 for white light.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rechargeable two-color magnifying glass lighting circuit, characterized in that: It includes a battery charge and discharge protection module, a voltage stabilizing output module and an LED lighting module, which are connected in sequence; The battery charge and discharge protection module includes: a resistor R1, a light emitting diode DR, a chip U1, a resistor R2, a capacitor C1, a capacitor C2, a battery, a first charging input interface, and a second charging input interface; The first end of the resistor R1 is connected to the first charging input interface, the second end of the resistor R1 is connected to the first end of the light emitting diode DR, the second end of the light emitting diode DR is connected to the No. 1 interface of the chip U1, the No. 2 interface of the chip U1 is grounded, the No. 3 interface of the chip U1, the positive electrode of the capacitor C2, and the voltage stabilizing output module are respectively connected to the No. 2 interface of the battery, the No. 1 interface of the battery is grounded, the second charging input interface is respectively connected to the No. 4 interface of the chip U1 and the positive electrode of the capacitor C1, the negative electrode of the capacitor C1 and the negative electrode of the capacitor C2 are respectively grounded, the No. 6 interface of the chip U1 is connected to the first end of the resistor R2, and the second end of the resistor R2 is grounded; The voltage stabilization output module includes: a capacitor C3, a chip U2, a resistor R3, an inductor L, a switch SW and a capacitor C4, wherein the capacitor C3, the chip U2, the resistor R3, the inductor L, the switch SW and the capacitor C4 are respectively connected via circuit board wiring; Interface No. 3 of the chip U1, the positive electrode of the capacitor C2, the first end of the capacitor C3, and interface No. 1 of the chip U2 are respectively connected to interface No. 2 of the battery, the second end of the capacitor C3 is grounded, interface No. 2 of the chip U2 is grounded, interface No. 3 of the chip U2 is connected to the first end of the resistor R3, the second end of the resistor R3 is connected to static contact No. 1 of the switch SW, the moving contact No. 2 of the switch SW is grounded, static contact No. 3 and static contact No. 4 of the switch SW are respectively connected to the LED lighting module, interface No. 4 of the chip U2 is respectively connected to the first end of the inductor L, the first end of the capacitor C4 and the LED lighting module, interface No. 6 of the chip U2 is connected to the second end of the inductor L, and the second end of the capacitor C4 is grounded.

2. The rechargeable two-color magnifying glass lighting circuit as claimed in claim 1, characterized in that: The LED lighting module includes: a resistor RZ1, a resistor RZ2, a resistor RZ3, a resistor RZ4, a resistor RZ5, a resistor RZ6, a resistor RD1, a resistor RD2, a resistor RD3, a resistor RD4, a resistor RD5, a resistor RD6, a diode Z1, a diode Z2, a diode Z3, a diode Z4, a diode Z5, a diode Z6, a diode D1, a diode D2, a diode D3, a diode D4, a diode D5 and a diode D6. The resistor RZ1, the resistor RZ2, the resistor RZ3, the resistor RZ4, the resistor RZ5, the resistor RZ6, the resistor RD1, the resistor RD2, the resistor RD3, the resistor RD4, the resistor RD5, the resistor RD6, the diode Z1, the diode Z2, the diode Z3, the diode Z4, the diode Z5, the diode Z6, the diode D1, the diode D2, the diode D3, the diode D4, the diode D5 and the diode D6 are respectively connected via circuit board wiring.

3. The rechargeable two-color magnifying glass lighting circuit as claimed in claim 2, characterized in that: The first end of the diode Z1, the first end of the diode Z2, the first end of the diode Z3, the first end of the diode Z4, the first end of the diode Z5 and the first end of the diode Z6 are respectively connected to the No. 3 static contact of the switch SW, the first end of the diode D1, the first end of the diode D2, the first end of the diode D3, the first end of the diode D4, the first end of the diode D5 and the first end of the diode D6 are respectively connected to the No. 4 static contact of the switch SW, the second end of the diode Z1 is connected to the first end of the resistor RZ1, the second end of the diode Z2 is connected to the first end of the resistor RZ2, the second end of the diode Z3 is connected to the first end of the resistor RZ3, the second end of the diode Z4 is connected to the first end of the resistor RZ4, the second end of the diode Z5 is connected to the first end of the resistor RZ5, and the second end of the diode Z6 is connected to the first end of the resistor RZ6 The second end of the diode D1 is connected to the first end of the resistor RD1, the second end of the diode D2 is connected to the first end of the resistor RD2, the second end of the diode D3 is connected to the first end of the resistor RD3, the second end of the diode D4 is connected to the first end of the resistor RD4, the second end of the diode D5 is connected to the first end of the resistor RD5, the second end of the diode Z6 is connected to the first end of the resistor RZ6, the second end of the resistor RZ1, the second end of the resistor RZ2, the second end of the resistor RZ3, the second end of the resistor RZ4, the second end of the resistor RZ5, the second end of the resistor RZ6, the second end of the resistor RD1, the second end of the resistor RD2, the second end of the resistor RD3, the second end of the resistor RD4, the second end of the resistor RD5, the second end of the resistor RD6, the first end of the capacitor C4 and the first end of the inductor are respectively connected to interface No. 4 of the chip U2.

4. The rechargeable two-color magnifying glass lighting circuit according to any one of claims 1 to 3, characterized in that: The chip U1 is a charge and discharge protection chip, and the PL4054 model is selected.

5. The rechargeable two-color magnifying glass lighting circuit according to any one of claims 1 to 3, characterized in that: The chip U2 is a DC-DC step-down chip, and the PW5057 model is selected.

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