WO2014176836A1

WO2014176836A1 - Wireless electric energy transmission system, receiving end, transmitting end, and wakeup method for the system

Info

Publication number: WO2014176836A1
Application number: PCT/CN2013/080764
Authority: WO
Inventors: 李聃; 龙海岸; 赵金华
Original assignee: 海尔集团技术研发中心; 海尔集团公司
Priority date: 2013-04-28
Filing date: 2013-08-02
Publication date: 2014-11-06
Also published as: CN104124766A; CN104124766B

Abstract

A wireless electric energy transmission system comprising a transmitting end (21) and a receiving end (22). The receiving end (22) is provided with a physical switch (224) used for controlling power supply to a control circuit (223) of the receiving end (22). The control circuit (223) transmits an activation signal to a wireless receiver module (212) of the transmitting end (21) via a wireless transmitter module (222). The transmitting end (21) wakes up, on the basis of the activation signal, the transmitting end (21) to enter a working state. The wireless electric energy transmission system, the receiving end, the transmitting end, and the wakeup method for the system allow for wakeup of a concealed transmitting end and an embedded transmitting end for implementation of electric energy transmission, while at the same time reduce safety problems caused by user misoperation, and are highly automated.

Description

Radio energy transmission system, receiving end, transmitting end and wake-up method thereof

The present invention relates to the field of radio energy transmission, and in particular, to a radio energy transmission system, a receiving end, a transmitting end, and a wake-up method thereof. Background technique

In a wireless power transmission system, in order to avoid energy loss, the transmitting end is usually in a low-power standby state when there is no receiving end. When the transmitting end is in the standby state, to start the energy transmission, it is usually necessary to place the receiving end on the transmitting end, then wake up the transmitting end, and control the transmitting end to start the power transmission, but if the transmitting end is hidden or embedded, it may not be possible. Wake-up from the transmitter is very inconvenient for the user to use.

In the traditional wireless power transmission system, starting the transmitting end to transmit electrical energy is usually done by controlling the transmitting end. There are two common methods:

1. By controlling the physical switch of the transmitting end to wake up, the method is less intelligent, and when the transmitting end is hidden or embedded, the wake-up from the transmitting end cannot be realized, which is very inconvenient for the user to use, if the transmitting end is on the transmitting end When there is metal, the user may easily operate the triggering end to emit energy, which may cause a fire or other safety accident.

2. Control the transmitter to wake up by remote control. This method is convenient for users, but the degree of automation is low, and the remote controller needs to be used separately. Before and after use, the remote controller needs to be placed in a specific position to prevent the remote controller from being lost. .

The wireless energy transmission system can be an inductive coupled power transmission system, and Inductive Coupled Power Transfer (Inductive Coupled Power Transfer) is one of the wireless energy transmission technologies, referred to as ICPT technology, which is non-contact to the load through electromagnetic coupling. (receiving end) transmitting electricity A technology that can be.

1 is a structural block diagram of an inductively coupled power transmission system provided by the prior art. The transmitting end 11 includes a transmitting end driving circuit 111, a wireless receiving module 112, and a transmitting end control circuit 113. The receiving end 12 includes a receiving end driving circuit 121, a wireless receiving module 122, and a receiving end control circuit 123. The transmitting end driving circuit 111 includes a rectifying and filtering module and a half bridge converter module, and the receiving end driving circuit 121 includes a rectifying and filtering module and a DC load module. As shown in FIG. 1 , the inductively coupled power transmission process is as follows: In the transmitting end driving circuit 111, the power frequency alternating current (such as the voltage of 220V and the frequency of 50Hz alternating current) is rectified and filtered by the rectifying and filtering module, and then passed through the half bridge converter module. The direct current is converted into high frequency alternating current and supplied to the transmitting coil 115 to generate a high frequency magnetic field around the transmitting coil 115. The receiving end drive circuit 121 picks up energy by changing the magnetic field of the receiving coil 125, and then supplies it to the DC load after rectifying and filtering.

When a receiving end is placed on the transmitting end, the user turns on the physical switch of the mains input of the transmitting end to start the transmitting end to perform radio energy transmission to the receiving end. However, when the transmitting end is hidden or embedded, it is impossible to wake up from the transmitting end, which is very inconvenient for the user. If there is metal on the transmitting end, the user may easily operate the triggering end to transmit energy, which may be Causes a safety incident such as a fire. Summary of the invention

The invention provides a radio energy transmission system, a receiving end, a transmitting end and a wake-up method thereof, which can wake up the hidden transmitting end and the embedded transmitting end to realize power transmission.

To this end, the present invention provides a radio energy transmission system including a transmitting end and a receiving end, the receiving end is provided with a physical switch, and the physical switch is used to control power supply to the control circuit of the receiving end, and the receiving The control circuit of the terminal sends a start signal to the transmission through the wireless transmitting module The wireless receiving module of the terminal, the transmitting end wakes up the transmitting end to enter a working state according to the starting signal.

Preferably, the receiving end comprises a starting power source, and when the physical switch is turned on, the starting power source supplies power to the control circuit of the receiving end.

Preferably, when the transmitting end enters an active state to start power transmission, the converting module of the receiving end converts the received electrical energy to supply power to the control circuit of the receiving end.

Preferably, the mains input of the transmitting end is directly connected to the driving circuit of the transmitting end. Preferably, the wireless power transmission system is an inductively coupled power transmission system.

The invention also provides a receiving end of a radio energy transmission system,

The receiving end is provided with a physical switch, and the physical switch is configured to control power supply to the control circuit of the receiving end, and the control circuit sends a start signal to the wireless receiving module of the transmitting end of the wireless power transmission system through the wireless transmitting module, It is used to wake up the transmitting end to enter a working state.

Preferably, the receiving end of the wireless power transmission system is received by the inductively coupled power transmission system.

The invention further provides a transmitting end of a wireless power transmission system, the mains input of the transmitting end being directly connected to the driving circuit of the transmitting end.

The present invention further provides a wake-up method for a wireless power transmission system, the wake-up method comprising: powering a control circuit of the receiving end in response to turning on a physical switch provided in a receiving end of the wireless power transmission system ; The control circuit of the receiving end sends a start signal to the wireless receiving module of the transmitting end of the wireless power transmission system through the wireless transmitting module of the receiving end;

The transmitting end wakes up the transmitting end to enter a working state according to the startup signal.

Preferably, when the physical switch is turned on, the control circuit of the receiving end is powered by a starting power source provided in the receiving end.

The radio energy transmission system, the receiving end, the transmitting end and the waking method thereof of the invention can realize the power transmission by waking up the hidden transmitting end and the embedded transmitting end by setting a physical switch at the receiving end, and reducing the user's misoperation. Security issues, and the degree of automation is high. DRAWINGS

1 is a structural block diagram of an inductively coupled power transmission system provided by the prior art;

2 is a structural block diagram of a wireless power transmission system provided by the present invention;

FIG. 3 is a control flow chart of the wake-up of the wireless power transmission system provided by the present invention. detailed description

The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

2 is a block diagram showing the structure of a wireless power transmission system provided by the present invention. As shown in FIG. 2, the present invention provides a radio energy transmission system including a transmitting end 21 and a receiving end 22, a receiving end 22 provided with a physical switch 224, and a physical switch 224 for controlling a control circuit 223 (for example, a single chip microcomputer) to the receiving end. The power supply, the control circuit 223 of the receiving end 22 sends a start signal to the wireless receiving module 212 of the transmitting end through the wireless transmitting module 222, and the transmitting end 21 wakes up the transmitting end to enter the working state according to the starting signal. Preferably, the receiving end 22 includes a starting power supply 226, and when the physical switch is turned on, the starting power supply 226 supplies power to the control circuit 223 of the receiving end. The start power source 226 is preferably a button battery. When the transmitting end 21 enters the working state to start the power transmission, the conversion module of the receiving end 22 converts the received electric energy, that is, converts the strong electric power into a weak electric power, and supplies power to the control circuit 223 of the receiving end. Thus, after entering the working state, the starting power supply 226 no longer supplies power to the control circuit 223 of the receiving end, and the starting power supply 226 consumes only power at the moment of starting.

Further, the mains input terminal of the transmitting end is directly connected to the driving circuit 211 of the transmitting end. Since the physical switch 224 is set up at the receiving end 22, there is no need to set up a physical switch at the mains input of the transmitting end, but directly to the driving circuit 211 of the transmitting end.

Wherein, the wireless energy transmission system can be an inductively coupled power transmission system.

The transmitting end 21 of the present invention comprises a transmitting end driving circuit 211, a wireless receiving module 212 and a transmitting end control circuit 213. The receiving end 22 comprises a receiving end control circuit 221, a wireless receiving module 222 and a receiving end control circuit 223. The transmitting end driving circuit 211 includes a rectifying and filtering module and a half bridge converter module, and the receiving end driving circuit 221 includes a rectifying and filtering module and a DC load module. As shown in FIG. 2, the inductively coupled power transmission process is: After the power frequency alternating current is rectified and filtered by the rectifying and filtering module in the transmitter driving circuit 211, the direct current is directly converted into high frequency alternating current to be transmitted through the half bridge converter module. The coil 215 is configured to generate a high frequency magnetic field around the transmitting coil 215. The receiving end driving circuit 221 picks up energy by a variable magnetic field in the receiving coil 215, and then rectifies and filters it to supply a DC load.

When the transmitting end is not placed on the receiving end, the transmitting end will always be in the standby state, and the standby power is usually less than 3W. When the transmitting end needs to wake up the transmitting end and perform power transmission to the receiving end, after the receiving end is placed on the transmitting end, the physical is turned on. The switch starts to supply power to the control circuit of the receiving end, and after the power is turned on, the control circuit sends a start signal to the wireless receiving module of the transmitting end through the wireless transmitting module, and the transmitting end starts according to the received The signal enters the working state, and then the power is transferred until the end.

Wherein, by turning on the physical switch, a power source (such as a button battery) can be turned on to supply power to the control circuit of the receiving end. When the transmitting end enters the working state and starts the power transmission, the receiving end will generate the working voltage (for example, 15V), and the conversion module of the receiving end converts the received electric energy, and converts the strong electric power into weak electric power to supply power to the control circuit of the receiving end. In this way, after entering the working state, the starting power supply no longer supplies power to the control circuit of the receiving end, and the starting power supply only consumes power at the moment of starting.

The radio energy transmission system of the present invention can realize the power transmission by waking up the hidden transmitting end and the embedded transmitting end by setting a physical switch at the receiving end, and at the same time reducing the safety problem caused by the user's misoperation, and the degree of automation is high.

The present invention also provides a receiving end 22 of a radio energy transmission system. The receiving end 22 is provided with a physical switch 224. The physical switch 224 is used to control the power supply to the control circuit 223 of the receiving end. The control circuit 223 sends a start signal through the wireless transmitting module 222. The wireless receiving module 212 of the transmitting end is configured to wake up the transmitting end to enter a working state.

Preferably, the receiving end 22 includes a starting power source 226, and when the physical switch is turned on, the power source is turned on to supply power to the control circuit 223 of the receiving end. The start power source 226 is preferably a button battery. When the transmitting end 21 enters the working state and starts the power transmission, the converting module of the receiving end converts the received electric energy, that is, converts the strong electric power into a weak electric power, and supplies power to the control circuit 223 of the receiving end. Thus, after entering the working state, the starting power supply 226 no longer supplies power to the control circuit 223 of the receiving end, and the starting power supply 226 only consumes power at the instant of starting.

The control flow of the receiving end of the present invention is: when the receiving end is not placed on the transmitting end, the transmitting end will always be in the standby state, and the standby power is usually less than 3W. When the transmitting end needs to wake up the transmitting end and perform power transmission to the receiving end, After the receiving end is placed on the transmitting end, the physical switch is turned on to start the receiving end to control The circuit is powered. After the control circuit is powered on, the wireless transmitting module sends a start signal to the wireless receiving module of the transmitting end, which is used to wake up the transmitting end to enter the working state.

Wherein, by turning on the physical switch 224, the power source 226 (e.g., button battery) is activated to supply power to the control circuit 223 of the receiving terminal. When the transmitting end enters the working state and starts power transmission, the receiving end 22 will generate an operating voltage (for example, 15V), and the converting module at the receiving end converts the received electric energy, that is, converts the strong electric power into a weak electric power, and supplies power to the control circuit 223 of the receiving end. . Thus, after entering the working state, the starting power supply 226 no longer supplies power to the control circuit 223 of the receiving end, and the starting power supply 226 only consumes power at the moment of starting.

The receiving end of the radio energy transmission system of the present invention can set the physical switch to wake up the hidden transmitting end and the embedded transmitting end to realize power transmission, and at the same time reduce the safety problem caused by user misoperation, and the degree of automation is high.

The present invention further provides a transmitting end 21 of a radio energy transmission system, the mains input of the transmitting end 21 being directly connected to the driving circuit 21 of the transmitting end. Since the physical switch 224 is set up at the receiving end to wake up the transmitting end, it is not necessary to set up a physical switch at the mains input end of the transmitting end, but a driving circuit 211 directly connected to the transmitting end.

FIG. 3 is a control flow chart of the inductively coupled power transmission system provided by the present invention for wake-up. As shown in FIG. 3, the present invention further provides a wake-up method for a wireless power transmission system, the wake-up method comprising - step 301, in response to turning on a physical switch set in a receiving end of the wireless power transmission system The control circuit of the terminal is powered.

Step 302: The control circuit at the receiving end sends a start signal to the wireless receiving module of the transmitting end of the wireless power transmission system through the wireless transmitting module of the receiving end.

Step 303: The transmitting end wakes up the transmitting end according to the startup signal to enter a working state, and then starts the electrical energy. Transmission.

Preferably, when the physical switch is turned on, the control circuit of the receiving end is powered by the starting power source provided in the receiving end. The starting power source is preferably a button battery. When the transmitting end enters the working state and starts the power transmission, the conversion module of the receiving end converts the received electric energy, that is, converts the strong electric power into a weak electric power, and supplies power to the control circuit of the receiving end. In this way, after entering the working state, the starting power supply no longer supplies power to the control circuit of the receiving end, and the starting power supply only consumes power at the moment of starting.

The wake-up method of the wireless power transmission system of the present invention can wake up the hidden transmitting end and the embedded transmitting end to realize power transmission, and at the same time reduce the safety problem caused by user misoperation, and the degree of automation is high.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

claims

1. A wireless power transmission system, including a transmitting end and a receiving end, characterized in that the receiving end is provided with a physical switch, and the physical switch is used to control power supply to the control circuit of the receiving end. The control of the receiving end The circuit sends a starting signal to the wireless receiving module of the transmitting end through the wireless transmitting module, and the transmitting end wakes up the transmitting end to enter the working state according to the starting signal.

2. The wireless power transmission system according to claim 1, wherein the receiving end includes a starting power supply, and when the physical switch is turned on, the starting power supply supplies power to the control circuit of the receiving end.

3. The wireless power transmission system according to claim 2, characterized in that, when the transmitter enters the working state and starts power transmission, the conversion module of the receiver converts the received power into Control circuit power supply.

4. The wireless power transmission system according to claim 1, characterized in that the mains input end of the transmitter end is directly connected to the drive circuit of the transmitter end.

5. The wireless power transmission system according to claim 1, characterized in that the wireless power transmission system is an inductive coupling power transmission system.

6. A receiving end of a wireless power transmission system, characterized by:

The receiving end is provided with a physical switch. The physical switch is used to control power supply to the control circuit of the receiving end. The control circuit of the receiving end sends a start signal to the wireless receiving end of the transmitting end of the wireless power transmission system through a wireless transmitting module. Module, used to wake up the transmitter to enter the working state.

7. The receiving end of the wireless power transmission system according to claim 6, wherein the receiving end includes a starting power supply, and when the physical switch is turned on, the starting power supply controls the control circuit of the receiving end. powered by.

8. The receiving end of the wireless power transmission system according to claim 7, characterized in that, when the transmitting end enters the working state and starts power transmission, the conversion module of the receiving end converts the received electric energy. The control circuit at the receiving end is powered.

9. The receiving end of the wireless power transmission system according to claim 6, characterized in that the receiving end of the wireless power transmission system is a receiving end of an inductive coupling power transmission system.

10. A transmitter end of a wireless power transmission system, characterized in that the mains input end of the transmitter end is directly connected to the drive circuit of the transmitter end.

11. A wake-up method for a wireless power transmission system, characterized in that the wake-up method includes:

In response to the turning on of the physical switch provided in the receiving end of the wireless power transmission system, power is supplied to the control circuit of the receiving end;

The control circuit of the receiving end sends a start signal to the wireless receiving module of the transmitting end of the wireless power transmission system through the wireless transmitting module of the receiving end;

The transmitting end wakes up the transmitting end to enter the working state according to the start signal.

12. The method for waking up the wireless power transmission system according to claim 11, wherein when the physical switch is turned on, the control circuit of the receiving end is powered by a starting power supply provided in the receiving end.

13. The wake-up method of the wireless power transmission system according to claim 12, characterized in that when the transmitter enters the working state and starts power transmission, the conversion module of the receiver converts the received power into The control circuit at the receiving end is powered.