CN201496867U - Wireless charging and lighting device - Google Patents

Abstract

The utility model discloses a wireless charging lighting device, which comprises a charging device and a lighting device containing a rechargeable battery, wherein the charging device comprises a power supply conversion circuit, an oscillation generating circuit, a wireless transmitting circuit and an MCU control module; the light-emitting device consists of a wireless receiving circuit, a battery charging control circuit, a central processing unit, a driving circuit and an LED lamp. The utility model discloses a principle of electromagnetism coincidence, the mode through wireless charging will charge partly and luminous component separation to make luminous component volume littleer, it is more convenient to carry, moreover, the utility model discloses a LED lamp is as illuminator's light emitting source, makes the utility model discloses the illumination time is longer, certainly also more environmental protection and energy saving.

Description

A wireless charging lighting device

technical field

The utility model belongs to a lighting device, in particular to a wireless charging lighting device.

Background technique

At present, there are often sudden power outages at night in daily life, especially during the peak period of electricity consumption in summer. After the power outage, it is dark, which brings a lot of inconvenience to our life; emergency lighting is a very good power supply after power outage. Lighting devices, however, most of the emergency lights on the market are fixed on high walls and cannot be carried, and the single lighting time is short, which can no longer meet people's needs.

At present, the light of a general lighting device is turned on or off at the same time when the switch is turned on or off, without a gradual change process. People turn off the lights before going to bed every day, but it may take some time for low-light lighting after the action of turning off the lights; at the same time, people have the habit of seeing the light in the room gradually brighten when they get up, so that it will not be too dazzling and let the People don't feel well.

Utility model content

In order to solve the above problems, the purpose of this utility model is to provide a wireless charging lighting device which is more convenient to carry and has a longer lighting time.

In order to achieve the above object, the technical solution adopted in the utility model is:

A wireless charging lighting device, which is composed of a charging device and a light emitting device containing a rechargeable battery. After rectifying, filtering and reducing the voltage of the AC mains, it is sent to the oscillation generation circuit to convert it into a high-frequency voltage signal, and then transmitted to the light-emitting device through the wireless transmitting circuit; the light-emitting device is composed of a wireless receiving circuit, a battery charging control circuit, and a central processing unit. The battery charging control circuit is electrically connected with the wireless receiving circuit and the central processing unit to control the charging of the rechargeable battery. The driving circuit is connected with the output terminal of the battery, the central processing unit and the LED light respectively. electrical connection.

Preferably, the MCU control unit is also connected to a clock unit that triggers the switch of the LED light at regular intervals.

Preferably, the central processing unit is also connected to a human body touch sensing circuit that triggers the LED light switch.

Preferably, the charging device further includes a universal USB interface that can be connected to a computer USB output port to obtain power supply.

The utility model adopts the principle of electromagnetic coupling to generate a changing high-frequency electromagnetic field in the primary coil in the charging device. The changing electromagnetic field is coupled by the secondary coil in the light emitting device to charge the battery. This wireless charging method only needs to The light-emitting device can be charged when it is close to the charging device. Therefore, it is more convenient to use and avoids the possibility of electric shock between the human body and the middle conductor of the charging device during the plugging and unplugging process.

At the same time, the utility model adopts a wireless charging method to separate the charging part from the light emitting part, so that the volume of the light emitting part is smaller and it is more convenient to carry.

Not only that, the utility model adopts LED lights as the light source of the light emitting device, so that the utility model has a longer lighting time, and of course is more environmentally friendly and energy-saving.

Description of drawings

Fig. 1 is a structural block diagram of Embodiment 1 of a wireless charging lighting device of the present invention;

Fig. 2 is a structural block diagram of Embodiment 2 of a wireless charging lighting device of the present invention;

Fig. 3 is a structural block diagram of Embodiment 3 of a wireless charging lighting device of the present invention;

Fig. 4 is a power conversion circuit diagram of a charging device of a wireless charging lighting device of the present invention;

Fig. 5 is a circuit diagram of oscillation generation and a circuit diagram of wireless transmission of a charging device of a wireless charging lighting device of the present invention;

Fig. 6 is a circuit diagram of the MCU control unit and the clock unit of the charging device of a wireless charging lighting device of the present invention;

Fig. 7 is a circuit diagram of a light emitting device of a wireless charging lighting device of the present invention;

Fig. 8 is a structural block diagram of Embodiment 4 of a wireless charging lighting device of the present invention;

Fig. 9 is a structural block diagram of Embodiment 5 of a wireless charging lighting device of the present invention;

Fig. 10 is a structural block diagram of Embodiment 6 of a wireless charging lighting device of the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

Example 1:

As shown in Figure 1, a wireless charging lighting device of the present invention is composed of a charging device and a light emitting device containing a rechargeable battery. The charging device is composed of a power conversion circuit, an oscillation generation circuit, a wireless transmission circuit and an MCU control module. After the power conversion circuit rectifies, filters, and reduces the voltage of the AC mains, it is sent to the oscillation generation circuit to convert it into a high-frequency voltage signal, and then transmitted to the light-emitting device through the wireless transmission circuit; the light-emitting device is charged by the wireless receiving circuit and the battery. Control circuit, central processing unit, driving circuit and LED lights, the battery charging control circuit is electrically connected with the wireless receiving circuit and the central processing unit to control the charging of the rechargeable battery, the driving circuit is connected with the output end of the battery, the central The processor is electrically connected to the LED light.

As shown in FIG. 4 , the power conversion circuit of a wireless charging lighting device of the present invention mainly rectifies the mains power, and then controls the PWM to adjust and reduce the voltage through the switch, so as to operate the oscillation generation circuit.

As shown in Figure 5, the transistors Q3 and Q4 and other components together form a positive feedback oscillating circuit, so that a 75K high-frequency signal is generated on the coil L2.

As shown in Figure 6, the first leg of the chip U2 in the MCU control module is connected to the base of the transistor Q2 through the resistor R1, and the collector of the transistor Q1 is connected to the power supply line of the oscillation circuit to control the oscillation generating circuit.

As shown in Figure 7, when the coil L1 in the lighting device senses the oscillating signal emitted from the charging device, it is rectified by the diode D1 to charge the battery, and at the same time, another part of the signal is rectified by the diode D2 and then input to the central processing unit. On the No. 3 pin of the chip U2 in the chip, the chip U2 can use this signal to distinguish whether there is a charging device and whether there is power transmission, so as to determine whether the mains power exists.

When there is mains power, the wireless transmitting part is working with electricity. At this time, there is a change in the primary and secondary coils, and the receiving part senses the signal. When the power is cut off, because the transmitting part has no power, the oscillation part does not. Therefore, there is no changing electromagnetic Dang in the primary and secondary coils, and the receiving part does not sense the signal. Once the No. 3 pin of the chip U2 detects that there is no high-level signal, it will control the No. 7 port of the LED and turn on the LED lighting. , this is a very good emergency light.

Example 2:

As shown in Figure 2, this embodiment adds a clock unit on the basis of Embodiment 1, and the clock unit is connected with the MCU control module in the charging device to control the opening or closing of the LED at regular intervals; as shown in Figure 6, The chip U2 in the MCU control module controls a clock unit DISP (LCD display).

As shown in Figure 6, the first pin of the chip U2 in the MCU control module is connected to the base of the transistor Q2 through the resistor R1. When the time set by the clock unit in the charging device is up, the MCU control module will output a high level The signal controls Q2 to be turned on and off to control the power supply of the oscillating line to stop and activate the oscillating control signal. This regular oscillating signal is coupled to the receiving side of the light-emitting device through the coil. The number of times to distinguish is the function of the alarm signal to activate the corresponding command. For example, if 5 signals are received within 50m seconds, it is defined as a wake-up signal, and the LED light will slowly turn on; if 10 signals are received within 50m seconds, it is defined as a sleep signal, and the LED will slowly turn dark.

Example 3:

As shown in Figure 3, this embodiment adds a human body touch sensing circuit on the basis of Embodiment 2. The human body touch sensing circuit is connected to the central processing unit, and a metal touch piece is set on the sensing circuit to control the on or off of the LED. closure.

Utilizing the conductive function of the human body, when the human hand touches the metal sheet, the circuit is connected, and the circuit is disconnected after the hand is released. This signal is used as a switch to control the state of the LED light. When the light is off, touch the metal piece to turn on the LED light, and it will turn off after 5 minutes when you leave your hand. This function can be used as a sleep light for children (some children are used to falling asleep in an environment with lights, and before falling asleep Touch the metal piece, it will turn off when the hand leaves the metal piece after falling asleep) When the light is on, touch the metal piece twice in a row to turn off the LED.

Example 4

As shown in Figure 8, in order to facilitate the user to take power, this embodiment adds a general-purpose USB interface on the basis of Embodiment 1. The general-purpose USB interface is connected to the power conversion circuit, and the user only needs to use a USB cable to connect to the computer. It can take power from the computer and supply it to the wireless charging device.

Example 5

As shown in Figure 9, in order to facilitate the user to obtain electricity, this embodiment adds a general-purpose USB interface on the basis of embodiment 2. The general-purpose USB interface is connected to the power conversion circuit, and the user only needs to use a USB cable to connect to the computer. It can take power from the computer and supply it to the wireless charging device.

Example 6

As shown in Figure 10, in order to facilitate the user to take power, this embodiment adds a general-purpose USB interface on the basis of Embodiment 3. The general-purpose USB interface is connected to the power conversion circuit, and the user only needs to use a USB cable to connect to the computer. It can take power from the computer and supply it to the wireless charging device.

What is described above is only a typical implementation of a wireless charging lighting device of the present utility model. It should be pointed out that for those skilled in the art, some Deformation and improvement, these all belong to the protection domain of the present utility model.

Claims (4)

1. A wireless charging lighting device, which is composed of a charging device and a light emitting device containing a rechargeable battery, is characterized in that: the charging device is composed of a power conversion circuit, an oscillation generating circuit, a wireless transmitting circuit and an MCU control module, and the power supply After the conversion circuit rectifies, filters, and depressurizes the AC mains, it is sent to the oscillation generation circuit to convert it into a high-frequency voltage signal, and then transmitted to the light-emitting device through the wireless transmission circuit; the light-emitting device is composed of a wireless receiving circuit, a battery charging control circuit, The central processing unit, driving circuit and LED light constitute, the battery charging control circuit is electrically connected with the wireless receiving circuit and the central processing unit to control the charging situation of the rechargeable battery, and the driving circuit is respectively connected to the output end of the battery, the central processing unit and the LED lighting connection. 2. A wireless charging lighting device according to claim 1, characterized in that the MCU control unit is also connected to a clock unit that triggers the LED light switch at regular intervals. 3. A wireless charging lighting device according to claim 2, characterized in that the central processing unit is also connected to a human body touch sensing circuit that triggers an LED light switch. 4. A wireless charging lighting device according to any one of claims 1 to 3, characterized in that the charging device further includes a universal USB interface that can be connected to a computer USB output port to obtain power supply.

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