CN201904661U - Wireless charging device - Google Patents

Abstract

The utility model discloses a wireless charging device, which comprises a charging emitting plate and a receiver. The circuit structure of the charging emitting plate is composed of a direct-current input end and a primary induction coil, and the primary induction coil is electrically connected between two connecting ends of the direct-current input end. The circuit structure of the receiver consists of a direct-current output end, a secondary induction coil and a rectifying depressurization circuit, wherein the secondary induction coil is connected between two connecting ends of the direct-current output end in series. According to the electromagnetic induction theory, power can be transferred from the charging emitting plate to the receiver embedded or appended onto electronics, and thereby the electronics can be effectively charged wirelessly. Compared with conventional chargers, the wireless charging device is high in safety. Besides, the service life of chargers of electronic products can be prolonged according to the design of the receiver.

Description

A wireless charging device

technical field

The utility model relates to a charging device, in particular to a wireless charging device for wireless charging of electronic products such as mobile phones.

Background technique

At present, portable electronic devices such as mobile phones and MP3 are generally charged through a power adapter, which adopts a traditional charging method in which one end is connected to an AC power supply and the other end is connected to a rechargeable battery of the portable electronic device. Consumers must unplug the power cord and carry the power cord when in use. This charging method has many disadvantages. On the one hand, frequent plugging and unplugging can easily damage the connectors. On the other hand, it may also cause the risk of electric shock.

Utility model content

The purpose of the utility model is to solve the above problems and provide a wireless charging device capable of wireless charging.

The technical solution adopted by the utility model is: a wireless charging device, including a charging transmitting board and a receiver, the circuit structure of the charging transmitting board includes a direct current input terminal and two connecting terminals electrically connected to the direct current input terminal The primary induction coil; the circuit structure of the receiver includes a DC output terminal and a secondary induction coil connected in series between the two connection terminals of the DC output terminal and a rectification and step-down circuit.

Preferably, the charging transmitting board includes a charging board housing, the charging board housing is provided with a charging position mark for placing the receiver, and the circuit board integrated with the circuit structure of the charging transmitting board is placed in the charging board housing Inside the body, the direct current input terminal outputs to the outside through the charging board housing.

Preferably, the receiver is a sheath-type receiver, and the sheath-type receiver includes a sheath matching the housing of the electronic product, and a circuit board integrated with the circuit structure of the receiver is placed in the sheath, The direct current output end is output through the position of the casing corresponding to the charging port of the electronic product.

Preferably, the sleeve includes first and second sleeves, both sides of the first and second sleeves have chute for inserting electronic products, the first sleeve and the second sleeve The opposite end is provided with a docking piece, and the end of the second sleeve body opposite to the first sleeve is provided with a docking notch matched with the docking piece.

Preferably, the receiver is a universal receiver, and the universal receiver includes a receiver housing and a charging output line for connecting with a charging product for charging, and the circuit board integrated with the circuit structure of the receiver In the receiver housing, the DC output end is electrically connected to the input end of the charging output line.

Preferably, it also includes a power adapter for supplying direct current to the charging and emitting board.

The beneficial effects of the utility model are: the wireless charging device of the utility model utilizes the principle of electromagnetic induction to transmit electric energy from the charging transmitting board to the receiver built in or attached to the electronic product, thereby effectively wirelessly charging the electronic product, relatively Compared with traditional chargers, it has higher safety characteristics. In addition, the service life of electronic product chargers can be improved through the design of the receiver.

Description of drawings

Fig. 1 shows the connection structure of the wireless charging device described in the present invention in the charging state;

Figures 2a and 2b are a front view and a top view of the charging launch plate shown in Figure 1, respectively;

3a and 3b are respectively a front view and a side view of an implementation structure of the receiver shown in FIG. 1;

Fig. 4 shows the installation structure of the receiver and the electronic product shown in Fig. 3a and 3b;

Fig. 5 is a perspective view according to another implementation structure of the receiver shown in Fig. 1;

FIG. 6 shows the circuit structure of the charging transmitting board and the receiver shown in FIG. 1 .

Detailed ways

As shown in Figure 1, the wireless charging device of the present invention includes a charging transmitting board 10 and a receiver 20, and as shown in Figure 6, the circuit structure of the charging transmitting board 10 includes a DC input terminal 13 and an electrical connection to the DC input terminal. The primary induction coil L1 between the two connection terminals; the circuit structure of the receiver 20 includes a DC output terminal 23a, a secondary induction coil L2 and a rectification and step-down circuit connected in series between the two connection terminals of the DC output terminal. The charging port of the electronic product is electrically connected to the direct current output terminal of the receiver 20, so that a closed charging loop is formed between the receiver 20 and the battery of the electronic product. When charging is required, the receiver 20 is placed on the charging transmitter board 10, The charging transmitting board 10 can transmit electric energy to the receiver 20 through the electromagnetic induction between the primary and secondary induction coils, thereby realizing wireless charging of electronic products.

In this embodiment, the charging transmitting board 10 inputs 18V direct current, and the receiver 20 outputs 5V direct current. As shown in FIG. 1 , the wireless charging device can be configured with a power adapter 30 for the charging launch board 10 , and the power adapter 30 can convert 110V-220V AC power into 18V DC power for output.

As shown in Figures 2a and 2b, the charging transmitting board 10 includes a charging board housing 11, the charging board housing 11 is provided with a charging position mark 12 for placing the receiver 20, and the circuit of the circuit structure of the charging transmitting board is integrated. The board is placed in the charging board housing 11 , and the DC input end 13 is connected to the outside through the charging board housing 11 . The charging board housing 11 can be provided with multiple charging position marks 12, so that multiple electronic products can be charged at the same time. Here, it is only necessary to place the receiver 20 on the approximate position of the charging position mark 12, and the receiver 20 will be automatically aligned for charging under the action of the magnetic force.

In order to facilitate the charging operation, as shown in Figures 3a, 3b and 4, the receiver 20 can be designed in the form of a protective case as a certain electronic product, defined as a protective case receiver 20a, the protective case receiver 20a It includes a casing that matches the shell of an electronic product 50, such as a mobile phone. The circuit board integrated with the circuit structure of the receiver 20 is placed in the casing, and the DC output terminal 23a is connected to the charging port of the electronic product 50 through the casing. The corresponding position is exposed to the outside. Thus, the receiver 20a can be used as a protective cover of the electronic product and is always placed on the shell of the electronic product. When the two are socketed together, the direct current output terminal 23a is directly connected to the charging port of the electronic product. Here, the casing will not hinder the normal use of the electronic product, that is, all the function buttons, various interfaces except the charging port, and the screen of the electronic product can be exposed through the casing.

In this way, as long as the existing electronic products such as mobile phones and game consoles are equipped with a dedicated protective cover receiver, the electronic products can be charged directly on the charging transmitter without connecting wires. The charging launch board 10 can also be equipped with a number of special designs to ensure that the charging process is absolutely convenient and neat. For example, the position of the contact point of the charging position mark 12 is marked, and a confirmation display light and sound effect are provided to ensure that the electronic product is placed accurately. Electromagnetic induction exerts the strongest performance, so the time required for charging will never be slower than the traditional wired charging method, and it only takes a short time to fill up the battery. In addition, the charging launch board 10 can also provide a power control function, which can automatically adjust the energy transmission according to the needs. After the electronic product is fully charged, it will automatically stop the power supply and turn off the product power supply, which can save energy and avoid overcharging. It can also protect electronic product.

As shown in FIG. 4 , in order to put the protective cover receiver 20a on the shell of the electronic product, the cover can be designed as a split type, that is, it includes a first cover 21a and a second cover 22a, the first Both sides of the sleeve body 21a and the second sleeve body 22a have slide grooves for inserting electronic products, and the end of the first sleeve body 21a abutting with the second sleeve body 22a is provided with a butt joint 211a, and the second sleeve body 21a The end of the body 22a that is connected to the first cover body 21a is provided with a docking notch 221a that matches the docking piece 211a. When assembling, a part of the electronic product 50 is now inserted into the second cover body 22a, and then the electronic product is inserted into the second cover body 22a. The other part of 50 is inserted into the first sleeve body 21a, and when fully inserted, the first sleeve body 21a and the second sleeve body 22a are butted against each other to achieve engagement.

In addition, the receiver 20 can also be designed as a universal receiver 20b generally applicable to electronic products as shown in FIG. The circuit board of the circuit structure is placed in the receiver housing 21b. When using the universal receiver 20b, when charging, it is necessary to electrically connect the other end of the charging output line 22b to the charging port of the electronic product 50, or to charge an electronic product equipped with a different type of USB port through a different type of adapter.

As for the charging emitting board 10 shown in Fig. 2a and 2b, it can charge three electronic products at the same time, or only charge one electronic product. The charging transmitting board 10 can detect the magnetic induction signal emitted when starting up and save it as an initial value, and use it as a reference to determine whether the load is connected, and whether the load is fully charged, so the wireless charging device of the present invention can Do not take any load. The specific operation steps are as follows: (1) After the charging and launching board 10 is powered on, its internal buzzer sounds briefly, and at the same time the backlight is on, and the charging and launching board enters the initialization process; Place the receiver on the charging transmitter board 10 for charging.

In summary, the above are only preferred embodiments of the present utility model, and are not intended to limit the implementation scope of the present utility model. That is, all equivalent changes and modifications made according to the patent scope of the utility model should belong to the technical category of the utility model.

Claims (6)

1. A wireless charging device, characterized in that: it includes a charging transmitting board and a receiver, and the circuit structure of the charging transmitting board includes a direct current input terminal and a primary induction between two connection terminals electrically connected to the direct current input terminal. Coil; the circuit structure of the receiver includes a direct current output terminal, a secondary induction coil and a rectification and step-down circuit connected in series between the two connection terminals of the direct current output terminal. 2. The wireless charging device according to claim 1, characterized in that: the charging transmitter board includes a charging board housing, the charging board housing is provided with a charging position mark for placing the receiver, and is integrated with a charging transmitter The circuit board of the circuit structure of the board is placed in the housing of the charging board, and the DC input terminal is output through the housing of the charging board. 3. The wireless charging device according to claim 1 or 2, characterized in that: the receiver is a protective cover receiver, and the protective cover receiver includes a cover that matches the shell of the electronic product, integrated The circuit board with the circuit structure of the receiver is placed in the casing, and the direct current output terminal is output through the casing corresponding to the charging port of the electronic product. 4. The wireless charging device according to claim 3, characterized in that: the casing includes first and second casings, both sides of the first and second casings have slides for inserting electronic products. slot, the end of the first sleeve that is connected to the second sleeve is provided with a butt joint, and the end of the second sleeve that is opposite to the first sleeve is provided with a butt that matches the dock notch. 5. The wireless charging device according to claim 1 or 2, characterized in that: the receiver is a universal receiver, the universal receiver includes a receiver housing and is used to connect with a charging product for charging The charging output line, the circuit board integrated with the circuit structure of the receiver is placed in the receiver housing, and the DC output end is electrically connected to the input end of the charging output line. 6. The wireless charging device according to claim 1, further comprising a power adapter for providing DC power to the charging transmitting board. the

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