CN211089237U

CN211089237U - Wireless charging transmitter with fan cooling

Info

Publication number: CN211089237U
Application number: CN201921519236.0U
Authority: CN
Inventors: 邢益涛
Original assignee: 邢益涛
Current assignee: Zhucaowei (Shenzhen) Electronics Co., Ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-07-24
Anticipated expiration: 2029-09-12

Abstract

The utility model relates to the technical field of wireless charging, in particular to a wireless charging transmitter with fan heat dissipation, which is applied to the wireless charging transmitter with fan heat dissipation, the wireless charging and transmitting module converts the transmitted energy into two parts of electric energy at the same time, one part of the electric energy is the electric energy which can be used by the fan module, the other part of the electric energy is the electric energy which can be charged by the intelligent terminal, the fan module is powered on the premise of not influencing the charging of the intelligent terminal, the second control circuit board is converted into current which can be directly utilized by the fan module, the fan module rotates, active heat dissipation of the wireless charging transmitting module is achieved, the problem of heat productivity in the wireless charging transmitting process is solved, and the whole wireless charging transmitter is guaranteed to be in a low-temperature state, so that high-level wireless charging efficiency is kept.

Description

Wireless charging transmitter with fan cooling

Technical Field

The utility model relates to a wireless charging technology field, concretely relates to wireless transmitter that charges with heat dissipation by fan.

Background

At present, with the popularization of mobile electronic devices such as mobile phones, great convenience is brought to the lives of people, the use frequency is higher and higher, the charging technology of the mobile electronic devices is also developed at a high speed, and particularly, the wireless charging technology also enters an application stage.

The wireless charging device is a charging device which is connected to a terminal device needing charging without a traditional charging power line and generally comprises a transmitting device and a receiving device, wherein the charging device is charged by utilizing an electromagnetic wave induction principle, a coil is respectively arranged at a transmitting end and a receiving end, the coil at the transmitting end is connected with a wired power supply to generate an electromagnetic signal, and the coil at the receiving end induces the electromagnetic signal at the transmitting end to generate current to charge a product.

In the wireless charging process of the current mobile phone, three kinds of heat are superposed due to the heating of an electromagnetic coil in a wireless charging seat, the heating of a power generation coil attached to the back of the mobile phone during working and the heating of the mobile phone during charging, so that the current mobile phone generates heat seriously during wireless charging and is damaged. On the other hand, in some mobile phones, in order to maintain safe charging, when the temperature is detected to rise to a certain threshold, the charging current is forcibly reduced, which results in an extension of the charging time. As the capacity of the built-in battery of the electronic device is increased, the heat dissipation requirement during charging is also increased. And no product for solving the technical problem well exists in the market for the heating problem of the wireless charging transmitter.

SUMMERY OF THE UTILITY MODEL

In order to effectively solve the problem, the utility model provides a wireless transmitter that charges with heat dissipation by fan.

The utility model discloses a concrete technical scheme as follows: a wireless charging transmitter with fan heat dissipation comprises at least one wireless charging transmitting module, at least one fan module for providing active heat dissipation, and at least one energy conversion module for receiving wireless electromagnetic energy and converting the wireless electromagnetic energy into direct current usable by a fan;

The energy conversion module is arranged on one side of the emitting surface of the wireless charging emitting module and is electrically connected with the fan module, the energy conversion module provides a current for the fan module to rotate and dissipate heat after receiving wireless energy, and the fan module is arranged on one side, opposite to the emitting surface, of the wireless charging emitting module.

Further, the energy conversion module comprises at least one wireless receiving coil and at least one second control circuit board;

The wireless receiving coil is attached to one side face of the wireless charging transmitting module and connected with a second control circuit board, and the second control circuit board is connected with the fan module.

further, the second control circuit board comprises a pcb substrate, Cr, RECT, C L, Vcc and GND, wherein the pcb substrate is provided with Cr, RECT, C L, Vcc and GND in an integrated mode;

one side of the RECT is connected with the Cr and then connected with the wireless receiving coil, and the other side of the RECT is connected with C L, Vcc and GND and is connected to the fan module through a lead.

Furthermore, a large-area metal sheet is arranged between the fan module and the wireless charging transmitting module, and the projection of the metal sheet on the wireless charging transmitting module surrounds the projection of the fan module on the wireless charging transmitting module.

Further, the material of the metal sheet includes, but is not limited to, one or a combination of copper, iron, aluminum, or a metal alloy.

furthermore, the circuit between Cr and Rect is provided with Ccr connected in parallel with Rect, forming a resonant circuit which cooperates with L, Cr to generate a specific higher frequency.

furthermore, a current limiting circuit for protecting the fan module from being burnt is connected in series between the C L and the fan module.

Further, the wireless charging transmitting module comprises at least one outer shell, at least one transmitting coil, at least one first control circuit board, at least one data connecting line and at least one USB terminal;

The shell is of a sheet-shaped structure, a transmitting coil is arranged in the shell and is connected to a USB terminal through a data connecting wire, and the USB terminal can be directly inserted into an adapter for power supply;

The first control circuit board is integrated on a circuit board of the USB terminal.

Furthermore, the fan module is fixedly arranged on one surface of the outer shell in a fixing mode, and the fixing mode comprises bonding, splicing or screwing.

The utility model discloses an useful part: use a wireless transmitter that charges with heat dissipation by fan, wireless transmitting module that charges turns into the transmission energy two parts electric energy simultaneously, and partly be the usable electric energy of fan module, the electric energy that another part can charge for intelligent terminal, realizes supplying power to fan module under the prerequisite that does not influence intelligent terminal and charge, through second control circuit board turns into the electric current that fan module can directly utilize, fan module rotates, realizes initiatively dispelling the heat to wireless transmitting module that charges, has solved the calorific capacity problem among the wireless transmitting process that charges, guarantees that whole wireless transmitter that charges is in the lower temperature state to keep high-level wireless charging efficiency.

Drawings

Fig. 1 is a schematic overall structure diagram of a first embodiment of the present invention;

Fig. 2 is another overall structure diagram of the first embodiment of the present invention;

FIG. 3 is a schematic structural unsealing view of the first embodiment of the present invention;

Fig. 4 is a schematic circuit diagram of the second control circuit board according to the first embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in order to provide a better understanding of the present invention to the public, certain specific details are set forth in the following detailed description of the invention. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details.

As shown in fig. 1 and 2, for the overall structural schematic diagram of the first embodiment of the present invention, this embodiment provides a wireless charging transmitter with a fan for heat dissipation, which includes at least one wireless charging transmitting module 1 for providing transmitting energy, at least one fan module 2 for providing active heat dissipation, and at least one energy conversion module 3 for receiving wireless electromagnetic energy and converting the wireless electromagnetic energy into direct current usable by the fan;

The wireless charging transmitting module 1 is a wireless charging transmitting device capable of transmitting wireless energy, and the wireless charging transmitting module 1 comprises at least one outer shell 101, at least one transmitting coil, at least one first control circuit board, at least one data connecting line 102 and at least one USB terminal 103;

In this embodiment, one surface of the outer shell 101 and an intelligent terminal with a wireless receiving coil 301 are close to each other, so as to realize a wireless charging function, where the intelligent terminal includes, but is not limited to, a mobile phone and an intelligent tablet with a wireless charging function;

The outer shell 101 is a sheet-like structure, a transmitting coil is arranged inside the outer shell 101, the transmitting coil is connected to a USB terminal 103 through a data connecting wire 102, and the USB terminal 103 can be directly inserted into an adapter for supplying power;

The first control circuit board is integrated on the circuit board of the USB terminal 103, so that the transmitting coil and the first control board are respectively disposed at two ends of the data connection line 102, and specifically, the wireless charging transmitting module 1 and the connection mode can be referred to, and the public (announcement) day is as follows: 2014-04-09CN103715781A is a setting mode of the technical scheme disclosed by the novel wireless charging transmission device.

The energy conversion module 3 is arranged on one side, facing the intelligent terminal, of the outer shell 101, and the fan module 2 is arranged on one side, opposite to the energy conversion module 3, of the outer shell 101, in this embodiment, the fan module 2 may be adhered or screwed to the outer shell 101;

As shown in fig. 3, the energy conversion module 3 includes at least one wireless receiving coil 301 and at least one second control circuit board 302;

The wireless receiving coil 301 is arranged on one surface of the outer shell 101 facing the intelligent terminal, the wireless receiving coil 301 can receive wireless energy of the wireless charging transmitting module 1, the transmitting energy of the wireless charging transmitting module 1 can penetrate through the wireless receiving coil 301 and then is continuously transmitted to the wireless receiving coil 301 of the intelligent terminal, and the intelligent terminal can still receive the wireless energy of the wireless charging transmitting module 1, so that the intelligent terminal is charged;

The wireless receiving coil 301 is connected with the second control circuit board 302, the second control circuit board 302 is connected with the fan module 2, the wireless receiving coil 301 converts the received energy into direct current through the second control circuit board 302, thereby supplying power to the fan module 2, realizing that the wireless charging transmitting module 1 converts the transmitting energy into two parts of electric energy at the same time, one part is the electric energy available for the fan module 2, the other part is the electric energy that the intelligent terminal can charge, realizing that the fan module 2 is supplied power on the premise of not influencing the charging of the intelligent terminal, and solving the problem of heat productivity in the wireless charging transmitting process.

In this embodiment, the fan module 2 is a conventional fan module 2 that is directly powered on in the field, and only a conventional device that is powered on to drive the fan to rotate and dissipate heat is required here, which is not particularly limited;

The second control circuit board 302 only converts wireless energy into current which can be used by the fan module 2, and the second control circuit board 302 is provided with a circuit for detecting the transmitting power of the wireless charging transmitting module 1, when the whole wireless charging transmitter is not close to the intelligent terminal and the intelligent terminal is not wirelessly charged, the second control circuit board 302 detects that the transmitting power of the wireless charging transmitting module 1 is in a low-level state through the wireless receiving coil 301, and at the moment, the second control circuit board 302 controls the fan module 2 to be in a static state; when the wireless charging transmitter is close to the intelligent terminal and the intelligent terminal is continuously charged wirelessly, the second control circuit board 302 obtains wireless energy by using the wireless receiving coil 301 and converts the wireless energy into current which can be directly used by the fan module 2 through the second control circuit board 302, and the fan module 2 rotates, so that the wireless charging transmitting module 1 is actively cooled, the whole wireless charging transmitter is ensured to be in a low-temperature state, and the high-level wireless charging efficiency is kept.

In other embodiments, the detecting operation of whether the second control circuit board 302 supplies power to the fan module 2 includes, but is not limited to, detecting the received power, the current and the voltage of the wireless receiving coil 301, and other detection signals that are conventional in the art, and are not limited in this respect.

further, the second control circuit board 302 includes a pcb substrate, Cr303, RECT304, C L305, Vcc306, and GND307, in this embodiment, Cr303 is a resonant capacitor, RECT304 is a rectifier bridge circuit, C L305 is an energy storage capacitor after the rectifier bridge, Vcc306 is a positive connection, and GND307 is a negative connection;

the pcb substrate is provided with Cr303, RECT304, C L305, Vcc306, and GND307, and a specific circuit of the second control circuit board 302 can refer to fig. 4, where one side of the RECT304 is connected to the Cr303 and then connected to the wireless receiving coil 301, and the other side of the RECT304 is connected to C L305, Vcc306, and GND307 and connected to the fan module 2 through a wire, so as to implement the wireless receiving coil 301, convert the received wireless energy into current usable by the fan module 2, and provide the fan module 2 with rotational heat dissipation.

further, the Cr303 is used to implement L C impedance matching of the series circuit, and the value of the Cr303 is (L tx multiplied by Cr303tx in the wireless charging transmitting module 1)/the wireless receiving coil 301, so as to ensure that the series ac resonant frequency center of the second control circuit board 302 is consistent with that of the wireless charging transmitting module 1, and achieve the purpose of ac transmission impedance matching.

In other embodiments, a large-area metal sheet is disposed between the fan module 2 and the wireless charging and transmitting module 1, the material of the metal sheet includes, but is not limited to, copper, iron, aluminum, or a metal alloy, and the projection of the metal sheet on the outer casing 101 is to surround the projection of the fan module 2 on the outer casing 101.

In other embodiments, the circuit between the Cr303 and the RECT304, and the CCr connected in parallel with the RECT304 are not shown in the figures to be specifically configured, and are used for generating a resonant circuit with a certain higher frequency in cooperation with the wireless receiving coil 301 and the Cr 303.

in other embodiments, a current limiting circuit is connected in series between C L305 and fan module 2 to ensure that the fan does not burn out.

For those skilled in the art, based on the teachings of the present invention, changes, modifications, substitutions and alterations to the embodiments will still fall within the scope of the invention.

Claims

1. A wireless charging transmitter with fan heat dissipation is characterized by comprising at least one wireless charging transmitting module, at least one fan module for providing active heat dissipation, and at least one energy conversion module for receiving wireless electromagnetic energy and converting the wireless electromagnetic energy into direct current usable by a fan;

2. The wireless charging transmitter with fanning heat dissipation of claim 1, wherein said energy conversion module comprises at least one wireless receiving coil, and at least one second control circuit board;

3. the wireless charging transmitter with fan cooling as claimed in claim 2, wherein the second control circuit board comprises a pcb substrate, Cr, RECT, C L, Vcc, and GND, and Cr, RECT, C L, Vcc, and GND are integrally disposed on the pcb substrate;

4. The wireless charging transmitter with fan cooling as claimed in claim 1, wherein a large-area metal sheet is disposed between the fan module and the wireless charging transmitter module, and a projection of the metal sheet on the wireless charging transmitter module is to surround a projection of the fan module on the wireless charging transmitter module.

5. The wireless charging transmitter with fanning heat dissipation of claim 4, wherein the metal sheet is made of a material including but not limited to one or a combination of copper, iron, aluminum or metal alloy.

6. the wireless charging transmitter with fan heat dissipation as recited in claim 3, wherein the circuit between Cr and Rect is provided with Ccr connected in parallel with Rect, forming a resonant circuit that works with L, Cr to generate a specific higher frequency.

7. the wireless charging transmitter with fan cooling of claim 3, wherein a current limiting circuit is connected in series between C L and the fan module to protect the fan module from being burned out.

8. The wireless charging transmitter with fanning heat dissipation of claim 1, wherein said wireless charging transmitter module comprises at least one outer housing, at least one transmitter coil, at least one first control circuit board, at least one data connection line, and at least one USB terminal;

9. The wireless charging transmitter with fan heat dissipation of claim 7, wherein the fan module is fixedly disposed on one surface of the outer casing by a fixing method, and the fixing method includes bonding, plugging or screwing.