CN113437788A - Wireless charging circuit and wireless charging system - Google Patents

Wireless charging circuit and wireless charging system Download PDF

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Publication number
CN113437788A
CN113437788A CN202110848611.1A CN202110848611A CN113437788A CN 113437788 A CN113437788 A CN 113437788A CN 202110848611 A CN202110848611 A CN 202110848611A CN 113437788 A CN113437788 A CN 113437788A
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China
Prior art keywords
module
energy storage
wireless charging
charging circuit
control
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Pending
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CN202110848611.1A
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Chinese (zh)
Inventor
唐徽艳
李观鸿
梁锦星
陈灿
李世林
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EELY Guangzhou Electronic Technology Co Ltd
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EELY Guangzhou Electronic Technology Co Ltd
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Priority to CN202110848611.1A priority Critical patent/CN113437788A/en
Publication of CN113437788A publication Critical patent/CN113437788A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The embodiment of the invention discloses a wireless charging circuit and a wireless charging system. The wireless charging circuit comprises a transmitting module, a receiving module and a transmitting module, wherein the transmitting module is used for transmitting electric energy with preset frequency; the receiving module is electrically connected with the load and used for receiving the electric energy transmitted by the transmitting module and supplying power to the load; the detection module is connected with the receiving module and is used for detecting the electric energy required by the receiving module; and the control module is respectively connected with the detection module and the transmitting module and is used for adjusting the output electric energy of the transmitting module according to the signal detected by the detection module. According to the technical scheme provided by the embodiment of the invention, wireless charging is realized through mutual inductance between the transmitting module and the receiving module, the safety problem of the existing wired charging is solved, and the electric energy output by the transmitting module can be adjusted according to the requirement of a load, so that energy-saving wireless charging is realized.

Description

Wireless charging circuit and wireless charging system
Technical Field
The embodiment of the invention relates to the technical field of wireless charging, in particular to a wireless charging circuit and a wireless charging system.
Background
With the development of information technology and the improvement of living standard of people, the requirements on convenience and safety of charging equipment are higher and higher. The existing wired charging equipment has the risk of electric leakage, for example, when the existing wired charging equipment is not used properly, a certain electric shock probability exists, and the safety requirement of a user on the charging equipment is difficult to meet.
The safety problem existing in the existing wired charging becomes a problem to be solved urgently in the industry.
Disclosure of Invention
The embodiment of the invention provides a wireless charging circuit and a wireless charging system, which are used for solving the safety problem of the existing wired charging.
In order to realize the technical problem, the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a wireless charging circuit, including:
the transmitting module is used for transmitting electric energy with preset frequency;
the receiving module is electrically connected with the load and used for receiving the electric energy transmitted by the transmitting module and supplying power to the load;
the detection module is connected with the receiving module and is used for detecting the electric energy required by the receiving module;
and the control module is respectively connected with the detection module and the transmitting module and is used for adjusting the output electric energy of the transmitting module according to the signal detected by the detection module.
Optionally, the transmitting module includes:
the energy storage device comprises a first energy storage coil, a first energy storage module and a switch unit;
the first end of the first energy storage coil is connected with the first end of the first energy storage module and the power supply; the second end of the first energy storage coil is connected with the second end of the first energy storage module and the first end of the switch unit; the second end of the switch unit is grounded;
the switch unit is used for switching on or off according to the control signal of the control module;
the first energy storage coil is used for charging through a power supply in a conducting state of the switch unit; discharging to the first energy storage module when the switch unit is turned off;
the first energy storage module is used for discharging to the first energy storage coil under the switching-off state of the switching unit.
Optionally, the transmitting module further includes:
a control interface and a detection interface;
the control interface is connected with the control end of the switch unit and the control module; the switch unit is used for switching on or switching off according to a control signal output by the control module through the control interface;
the detection interface is connected with the second end of the first energy storage module and the control module, and the detection interface is used for detecting an electric signal of the second end of the first energy storage module.
Optionally, the transmitting module further includes:
a first resistor and a second resistor;
the first end of the first resistor is connected with the first end of the first energy storage module, and the second end of the first resistor is connected with the first end of the second resistor and the detection interface.
Optionally, the receiving module includes:
the second energy storage coil and the second energy storage module;
the first end of the second energy storage coil is connected with the first end of the second energy storage module; the second end of the second energy storage coil is connected with the second end of the second energy storage module;
the second energy storage coil is used for receiving electric energy through the transmitting module and discharging electricity to the second energy storage module;
the second energy storage module is used for supplying power to the load.
Optionally, the receiving module further includes:
and the input end of the rectifying unit is connected with the first end and the second end of the second energy storage module, the output end of the rectifying unit is connected with a load, and the rectifying unit is used for rectifying the alternating current output by the second energy storage module into direct current.
Optionally, the receiving module further includes:
and the first end of the filtering unit is connected with the first end of the load, and the second end of the filtering unit is connected with the second end of the load.
Optionally, the detection module includes:
a first NFC unit and a second NFC unit;
the first NFC unit is electrically connected with the receiving module and used for receiving the electric energy demand of the load;
the second NFC unit is electrically connected with the control module and used for sensing the sensing signal sent by the first NFC unit and outputting the sensing signal to the control module.
Optionally, the control module includes an I/O interface; the I/O interface is respectively connected with the detection module and the transmission module.
In a second aspect, an embodiment of the present invention provides a wireless charging system, including: the wireless charging circuit of any of the preceding aspects;
the wireless charging circuit comprises a transmitting module, a receiving module, a detecting module and a control module;
the wireless charging system also comprises a charging base and a mobile terminal, wherein the transmitting module, the detecting module and the control module are arranged in the charging base;
the receiving module and the detecting module are arranged in the mobile terminal.
The wireless charging circuit provided by the embodiment of the invention comprises a transmitting module, a receiving module and a transmitting module, wherein the transmitting module is used for transmitting electric energy with preset frequency; the receiving module is electrically connected with the load and used for receiving the electric energy transmitted by the transmitting module and supplying power to the load; the detection module is connected with the receiving module and is used for detecting the electric energy required by the receiving module; and the control module is respectively connected with the detection module and the transmitting module and is used for adjusting the output electric energy of the transmitting module according to the signal detected by the detection module. The wireless charging circuit provided by the embodiment of the invention realizes wireless charging through mutual inductance between the transmitting module and the receiving module, solves the safety problem of the existing wired charging, and on the other hand, the wireless charging circuit provided by the embodiment of the invention can adjust the electric energy output by the transmitting module according to the load requirement, thereby realizing energy-saving wireless charging.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a wireless charging circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another wireless charging circuit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another wireless charging circuit according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another wireless charging circuit according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another wireless charging circuit according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another wireless charging circuit according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another wireless charging circuit according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a wireless charging system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Based on the above technical problem, the present embodiment proposes the following solutions:
fig. 1 is a schematic structural diagram of a wireless charging circuit according to an embodiment of the present invention. Referring to fig. 1, the wireless charging circuit provided in the embodiment of the present invention includes a transmitting module 1, configured to transmit electric energy with a preset frequency; the receiving module 2 is electrically connected with the load, and the receiving module 2 is used for receiving the electric energy transmitted by the transmitting module 1 and supplying power to the load; the detection module 3 is connected with the receiving module 2, and the detection module 3 is used for detecting the electric energy required by the receiving module 2; and the control module 4 is connected with the detection module 3 and the transmission module 1 respectively, and the control module 4 is used for adjusting the output electric energy of the transmission module 1 according to the signal detected by the detection module 3.
Specifically, the control module 4 may be a single chip or an ARM, and the control module 4 may adjust the charging power of the transmitting module 1. Because the transmitting module 1 can include a coil and a capacitor, the coil of the transmitting module 1 stores alternating current with a certain frequency, the receiving module 2 can include a coil and a capacitor, mutual inductance can be generated between the coil of the receiving module 2 and the coil of the transmitting module 1, and current is generated through electromagnetic induction, so that electric energy is transmitted from the transmitting module 1 to the receiving module 2. The power supply is connected with the transmitting module 1, and the power supply can charge the transmitting module 1 under the control of the control module 4. Because the charging and discharging time of the transmitting module 1 is different under the condition of load or no load, the charging frequency of the transmitting module 1 is higher and the charging time is shorter under the condition of load; when the load is no, the charging frequency of the transmitting module 1 is low, and the charging time is long. The control module 4 can control the power supply to output the electric energy to the transmitting module 1 according to the electric energy signal required by the receiving module 2 detected by the detecting module 3, so as to realize the power self-adaption of wireless charging, consume no redundant electric energy when the receiving module 2 is empty, and output enough electric energy when the receiving module 2 is fully loaded.
The wireless charging circuit that this embodiment provided, on the one hand, through the electric energy of the preset frequency of emission module transmission, through the electric energy of receiving module transmission, and to the load power supply, realize wireless charging through mutual inductance between emission module and the receiving module, solve the security problem that current wired charging exists. On the other hand, the detection module detects the electric energy required by the receiving module, the control module adjusts the output electric energy of the transmitting module according to the signal detected by the detection module, the electric energy output by the transmitting module can be adjusted according to the load requirement, and energy-saving wireless charging is achieved.
Optionally, fig. 2 is a schematic structural diagram of another wireless charging circuit provided in the embodiment of the present invention. On the basis of the above embodiment, referring to fig. 2, the transmitting module 1 of the wireless charging circuit provided in the embodiment of the present invention includes a first energy storage coil 11, a first energy storage module 12, and a switch unit 13; the first end of the first energy storage coil 11 is connected with the first end of the first energy storage module 12 and a power supply; the second end of the first energy storage coil is connected with the second end of the first energy storage module and the first end of the switch unit; the second end of the switch unit is grounded; the switch unit is used for switching on or off according to a control signal of the control module 4; the first energy storage coil 11 is used for charging through a power supply when the switch unit is in a conducting state; discharging the first energy storage module 12 when the switching unit is turned off; the first energy storage module 12 is configured to discharge to the first energy storage coil 11 in an off state of the switching unit.
In particular, the first energy storage coil 11 may include an inductor coil, the first energy storage module 12 may include a thin film capacitor, and the switching unit 13 may include a switching tube. When the switch unit is switched on according to the control signal of the control module 4, the first energy storage coil 11 is charged through the power supply; when the switch unit is turned off according to the control signal of the control module 4, the first energy storage coil 11 charges the first energy storage module 12, and when the first energy storage coil 11 charges the first energy storage module 12, the first energy storage module 12 discharges to the first energy storage coil 11. Because the charging and discharging time of the transmitting module 1 is different under the condition of load or no load, when the load exists, the charging frequency of the first energy storage coil 11 and the first energy storage module 12 of the transmitting module 1 is higher, and the charging time is shorter; when the transmitter module 1 is unloaded, the first energy storage coil 11 and the first energy storage module 12 of the transmitter module 1 are charged with low frequency and long charging time. The detection module 3 may detect the charging time of the first energy storage coil 11 and the first energy storage module 12 of the transmission module 1 when the switch unit is in the off state. The control module 4 can judge the current load condition according to the charging time of the first energy storage coil 11 and the first energy storage module 12 of the transmitting module 1 detected by the detection module 3, and control the power output from the power supply to the transmitting module 1, so as to realize the power self-adaptation of wireless charging, and when the receiving module 2 is empty, the control module does not consume redundant power, and when the receiving module 2 is full, the control module outputs enough power.
Optionally, fig. 3 is a schematic structural diagram of another wireless charging circuit provided in the embodiment of the present invention. On the basis of the above embodiment, referring to fig. 3, the transmitting module 1 of the wireless charging circuit provided in the embodiment of the present invention further includes a control interface 14 and a detection interface 15; the control interface 14 is connected with the control end of the switch unit and the control module 4; the switch unit is used for switching on or off according to a control signal output by the control module 4 through the control interface 14; the detection interface 15 is connected to the second end of the first energy storage module 12 and the control module 4, and the detection interface 15 is configured to detect an electrical signal at the second end of the first energy storage module 12.
Specifically, the control interface 14 is connected with the control end of the switch unit and the control module 4; the switch unit acts on the control end of the switch unit according to the control signal output by the control module 4 through the control interface 14, so as to control the switch unit to be switched on or switched off. A detection interface 15 may be provided to connect to the second end of the first energy storage module 12, and the detection interface 15 may detect an electrical signal at the second end of the first energy storage module 12, for example, a waveform of a voltage at the second end of the first energy storage module 12. The voltage of the second end of the first energy storage module 12 corresponding to the turn-off time of the switch unit is zero, the control module 4 is electrically connected with the detection interface 15, and according to the electric signal output by the detection interface 15, the time from zero to the peak gradually in the waveform of the voltage of the second end of the first energy storage module 12 is calculated, and then the time from the peak to the trough is gradually reduced. The control module 4 calculates the time as the time for the next power supply to charge and store the energy in the first energy storage coil 11 of the transmitting module 1. The voltage at the second end of the first energy storage module 12 corresponding to the moment when the switching unit is turned off gradually rises to a peak from zero, which corresponds to a process of charging the first energy storage module 12 by the first energy storage coil 11. The voltage at the second end of the first energy storage module 12 is gradually reduced from the peak to the trough, corresponding to the process of outputting the electric energy from the first energy storage module 12 to the first energy storage coil 11.
Because the charging and discharging time of the transmitting module 1 is different under the condition of load or no load, when the load exists, the charging frequency of the first energy storage coil 11 and the first energy storage module 12 of the transmitting module 1 is higher, and the charging time is shorter; when the transmitter module 1 is unloaded, the first energy storage coil 11 and the first energy storage module 12 of the transmitter module 1 are charged with low frequency and long charging time. The detection module 3 may detect the charging time of the first energy storage coil 11 and the first energy storage module 12 of the transmission module 1, which is detected by the detection interface 15 when the switch unit is in the off state. The control module 4 can determine the current load condition according to the charging time of the first energy storage coil 11 and the first energy storage module 12 of the transmitting module 1 detected by the detection interface 15, and control the electric energy output from the power supply to the transmitting module 1 through the control interface 14, so as to realize the power self-adaptation of wireless charging, and when the receiving module 2 is empty, the control module does not consume redundant electric energy, and when the receiving module 2 is full, enough electric energy is output.
Optionally, fig. 4 is a schematic structural diagram of another wireless charging circuit provided in the embodiment of the present invention. On the basis of the above embodiment, referring to fig. 4, the transmitting module 1 of the wireless charging circuit according to the embodiment of the present invention further includes a first resistor R1 and a second resistor R2; a first terminal of the first resistor R1 is connected to a first terminal of the first energy storage module 12, and a second terminal of the first resistor R1 is connected to a first terminal of the second resistor R2 and the detection interface 15.
Specifically, the first resistor R1 and the second resistor R2 perform a voltage division function, so that the first energy storage module 12 is connected to the detection interface 15 through the first resistor R1, the voltage of the detection interface 15 is lower, the voltage of the detection interface 15 is reduced under the condition that the waveform and the period of the electrical signal output by the detection interface 15 are not affected, and the impact of the larger voltage output by the detection interface 15 on the control module 4 is reduced. Alternatively, the first resistor R1 may be set to be smaller than the resistance of the second resistor R2.
Optionally, fig. 5 is a schematic structural diagram of another wireless charging circuit provided in an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 5, the receiving module 2 of the wireless charging circuit provided in the embodiment of the present invention includes a second energy storage coil 21 and a second energy storage module 22; a first end of the second energy storage coil 21 is connected with a first end of the second energy storage module 22; the second end of the second energy storage coil is connected with the second end of the second energy storage module; the second energy storage coil 21 is used for receiving electric energy through the transmitting module 1 and discharging electricity to the second energy storage module 22; the second energy storage module 22 is used to supply power to the load.
In particular, the second energy storage coil 21 may comprise an inductor coil, and the second energy storage module 22 may comprise a thin film capacitor. The capacitance value of the first energy storage module 12 may be greater than the capacitance value of the second energy storage module 22. For example, the second tank coil 21 may be the same as the first tank coil 11, and the capacitance of the first tank module 12 may be 4 times the capacitance of the second tank module 22. The second tank coil 21 and the second tank module 22 are connected in parallel to form an oscillating circuit, and will resonate when the frequency reaches a certain value, which is the resonant frequency.
Optionally, fig. 6 is a schematic structural diagram of another wireless charging circuit provided in the embodiment of the present invention. On the basis of the above embodiment, referring to fig. 6, the receiving module 2 of the wireless charging circuit according to the embodiment of the present invention further includes a rectifying unit 23, an input end of the rectifying unit 23 is connected to the first end and the second end of the second energy storage module 22, an output end of the rectifying unit 23 is connected to a load, and the rectifying unit 23 is configured to rectify the ac power output by the second energy storage module 22 into a dc power.
Specifically, the second energy storage coil 21 obtains the alternating current from the transmitting module 1 through electromagnetic induction, outputs the alternating current through the second energy storage module 22, converts the alternating current into the direct current through the rectifying unit 23, and supplies power to the load.
Optionally, on the basis of the foregoing embodiment, referring to fig. 6, the receiving module 2 of the wireless charging circuit according to the embodiment of the present invention further includes a filtering unit 24, a first end of the filtering unit 24 is connected to a first end of a load, and a second end of the filtering unit 24 is connected to a second end of the load.
Specifically, the filtering unit 24 may include a capacitor, and the filtering unit 24 is used for filtering out noise.
Optionally, fig. 7 is a schematic structural diagram of another wireless charging circuit provided in the embodiment of the present invention. On the basis of the above embodiment, referring to fig. 7, the detection module 3 of the wireless charging circuit provided in the embodiment of the present invention includes a first NFC unit 31 and a second NFC unit 32; the first NFC unit 31 is electrically connected to the receiving module 2, and the first NFC unit 31 is configured to receive a power demand of a load; the second NFC unit 32 is electrically connected to the control module 4, and the second NFC unit 32 is configured to sense the sensing signal sent by the first NFC unit 31 and output the sensing signal to the control module 4.
Specifically, the first NFC unit 31 detects an electric energy demand of the load, electromagnetic induction is performed between the second NFC unit 32 and the first NFC unit 31, and the second NFC unit 32 may induce an induction signal sent by the first NFC unit 31 and output the induction signal to the control module 4.
Optionally, the control module includes an I/O interface; the I/O interface is respectively connected with the detection module and the transmission module.
Fig. 8 is a schematic structural diagram of a wireless charging system according to an embodiment of the present invention. On the basis of the above embodiments, referring to fig. 8, an embodiment of the present invention provides a wireless charging system 300 including the above-mentioned wireless charging circuit; the wireless charging circuit comprises a transmitting module 1, a receiving module 2, a detecting module 3 and a control module 4; the wireless charging system further comprises a charging base 100 and a mobile terminal 200, wherein the transmitting module 1, the detecting module 3 and the control module 4 are arranged in the charging base 100; the receiving module 2 and the detecting module 3 are disposed in the mobile terminal 200.
Specifically, the wireless charging system 300 provided in this embodiment may charge the load of the mobile terminal 200 in a wireless manner, when the load needs to be charged, the receiving module 2 is fully loaded with sufficient electric energy, when there is no load, the receiving module 2 is unloaded, and does not consume excessive electric energy, thereby implementing energy-saving wireless charging, and implementing wireless charging through mutual inductance between the transmitting module 1 and the receiving module 2, thereby solving the security problem existing in the existing wired charging. The mobile terminal 200 may include mobile terminals such as a mobile phone, a tablet computer, and a wearable device.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A wireless charging circuit, comprising:
the transmitting module is used for transmitting electric energy with preset frequency;
the receiving module is electrically connected with a load and used for receiving the electric energy transmitted by the transmitting module and supplying power to the load;
the detection module is connected with the receiving module and is used for detecting the electric energy required by the receiving module;
the control module is respectively connected with the detection module and the emission module, and is used for adjusting the output electric energy of the emission module according to the signal detected by the detection module.
2. The wireless charging circuit of claim 1, wherein the transmitting module comprises:
the energy storage device comprises a first energy storage coil, a first energy storage module and a switch unit;
the first end of the first energy storage coil is connected with the first end of the first energy storage module and a power supply; the second end of the first energy storage coil is connected with the second end of the first energy storage module and the first end of the switch unit; the second end of the switch unit is grounded;
the switch unit is used for switching on or off according to the control signal of the control module;
the first energy storage coil is used for charging through the power supply when the switch unit is in a conducting state; discharging to the first energy storage module when the switching unit is turned off;
the first energy storage module is used for discharging to the first energy storage coil when the switch unit is in an off state.
3. The wireless charging circuit of claim 2, wherein the transmitting module further comprises:
a control interface and a detection interface;
the control interface is connected with the control end of the switch unit and the control module; the switch unit is used for switching on or off according to a control signal output by the control module through the control interface;
the detection interface is connected with the second end of the first energy storage module and the control module, and the detection interface is used for detecting an electric signal of the second end of the first energy storage module.
4. The wireless charging circuit of claim 3, wherein the transmitting module further comprises:
a first resistor and a second resistor;
the first end of the first resistor is connected with the first end of the first energy storage module, and the second end of the first resistor is connected with the first end of the second resistor and the detection interface.
5. The wireless charging circuit of claim 1, wherein the receiving module comprises:
the second energy storage coil and the second energy storage module;
the first end of the second energy storage coil is connected with the first end of the second energy storage module; the second end of the second energy storage coil is connected with the second end of the second energy storage module;
the second energy storage coil is used for receiving electric energy through the transmitting module and discharging electricity to the second energy storage module;
the second energy storage module is used for supplying power to the load.
6. The wireless charging circuit of claim 5, wherein the receiving module further comprises:
and the input end of the rectifying unit is connected with the first end and the second end of the second energy storage module, the output end of the rectifying unit is connected with the load, and the rectifying unit is used for rectifying the alternating current output by the second energy storage module into direct current.
7. The wireless charging circuit of claim 6, wherein the receiving module further comprises:
and the first end of the filtering unit is connected with the first end of the load, and the second end of the filtering unit is connected with the second end of the load.
8. The wireless charging circuit of claim 1, wherein the detection module comprises:
a first NFC unit and a second NFC unit;
the first NFC unit is electrically connected with the receiving module and is used for receiving the electric energy demand of the load;
the second NFC unit is electrically connected with the control module and used for sensing the sensing signal sent by the first NFC unit and outputting the sensing signal to the control module.
9. The wireless charging circuit of claim 1, wherein the control module comprises an I/O interface; the I/O interface is respectively connected with the detection module and the emission module.
10. A wireless charging system, comprising: the wireless charging circuit of any of claims 1-9;
the wireless charging circuit comprises a transmitting module, a receiving module, a detecting module and a control module;
the wireless charging system further comprises a charging base and a mobile terminal, and the transmitting module, the detecting module and the control module are arranged in the charging base;
the receiving module and the detecting module are arranged in the mobile terminal.
CN202110848611.1A 2021-07-27 2021-07-27 Wireless charging circuit and wireless charging system Pending CN113437788A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110848611.1A CN113437788A (en) 2021-07-27 2021-07-27 Wireless charging circuit and wireless charging system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110848611.1A CN113437788A (en) 2021-07-27 2021-07-27 Wireless charging circuit and wireless charging system

Publications (1)

Publication Number Publication Date
CN113437788A true CN113437788A (en) 2021-09-24

Family

ID=77761853

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110848611.1A Pending CN113437788A (en) 2021-07-27 2021-07-27 Wireless charging circuit and wireless charging system

Country Status (1)

Country Link
CN (1) CN113437788A (en)

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