CN217445062U - Charging module and wireless charging system with same - Google Patents
Charging module and wireless charging system with same Download PDFInfo
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- CN217445062U CN217445062U CN202221053188.2U CN202221053188U CN217445062U CN 217445062 U CN217445062 U CN 217445062U CN 202221053188 U CN202221053188 U CN 202221053188U CN 217445062 U CN217445062 U CN 217445062U
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Abstract
The utility model relates to a wireless technical field that charges, specifically speaking relates to a module and have this wireless charging system who charges of module of charging. It includes transmission of electricity circuit, detection circuitry, transmitting circuit and control circuit, wherein: the power transmission circuit reduces voltage and rectifies mains supply and then transmits the mains supply to the terminal equipment; in this module of charging and the wireless charging system who has this module of charging, a period of time through when charging terminal equipment monitors, do not produce unusual back in this time quantum, then with the detection circuitry disconnection, make charging equipment can be in the charged state always, prevent to charge the disconnection on the way, some bluetooth headset have been solved because the reason of design, its inside metal axle that needs to set up, this has just led to some wireless chargers can produce the FOD warning, can't charge, some terminal equipment can produce high temperature when charging simultaneously, equipment automatic disconnection, and FOD also can report to the police this moment, make the compatibility of wireless charger worsen.
Description
Technical Field
The utility model relates to a wireless technical field that charges, specifically speaking relates to a module and have this wireless charging system who charges of module of charging.
Background
Along with the development of the terminal charging technology, the wireless charging technology is developed according to the requirement of people on convenient charging, and is popularized more and more. Wireless charging refers to transferring electric energy by using an alternating magnetic field generated between coils, instead of a conventional charger connected to a terminal device to be charged by a charging power line. In order to realize wireless charging, a wireless transmitting terminal is arranged in a general wireless charger, and a wireless receiving terminal is arranged in a charged terminal device (such as a mobile phone) to receive electric energy.
Along with the improvement gradually of science and technology level, the equipment that supports wireless charging is also more and more, wherein just including wireless bluetooth headset, however, some bluetooth headsets are because the reason of design, and its inside metal axle that needs to set up, and this has just led to partial wireless charger can produce FOD (foreign matter detection) and report to the police, can't charge, can produce the high temperature when some terminal equipment charge simultaneously, equipment automatic disconnection, and FOD (foreign matter detection) also can report to the police this moment, makes wireless charger's compatibility worsen.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a module of charging and have this wireless charging system of module of charging to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a charging module, including transmission circuit, detection circuitry, transmitting circuit and control circuit, wherein:
the power transmission circuit reduces voltage and rectifies mains supply and then transmits the mains supply to the terminal equipment;
the detection circuit detects whether a metal foreign body exists between the wireless charger and the terminal equipment or not, and controls the on-off of the power transmission circuit according to the result;
the transmitting circuit comprises a coil T2;
the control circuit comprises a chip U1, the chip U1 obtains terminal equipment information through a coil T2, a pin VCC of the chip U1 is connected with the output end of a power transmission circuit, a pin RX of the chip U1 is connected with a coil T2, a pin TX of the chip U1 is connected with a base of a switch tube Q5, a collector of the switch tube Q5 is connected with the output end of the power transmission circuit, and an emitter of the switch tube Q5 is connected with the input end of a detection circuit.
As a further improvement of the technical solution, the power transmission circuit includes a transformer T1, an output terminal of the transformer T1 is connected to a pin VCC of a chip U1, an output terminal of the transformer T1 is further connected to a collector of a switching tube Q5, and an output terminal of the transformer T1 is connected to a rectifier diode D1.
As a further improvement of the present technical solution, the detection circuit includes a switch S5, an input end of the switch S5 is connected to an emitter of a switching tube Q5, an output end of the switch S5 is sequentially connected to transistors Q1, Q2, Q3, and Q4, an oscillation circuit is formed among the transistors Q1, Q2, Q3, and Q4, an output end of the switch S5 is connected to a capacitor C1 after passing through the transistors Q1, Q2, Q3, and Q4, an output end of the capacitor C1 is connected to an output end of a coil T2, and an input end of the coil T2 is connected in parallel between the transistor Q2 and the transistor Q4.
As a further improvement of the technical solution, the transmitting circuit includes an oscillator U4, a pin NC of the oscillator U4 is connected to an output end of a rectifier diode, a pin 2 of the oscillator U4 is connected to a capacitor C5 and a resistor R3, the capacitor C5 and a resistor R3 are connected to a collector of a triode Q6, an output end of the resistor R3 is connected to a coil T2, an input end of the coil T2 is connected in parallel to a capacitor C7, an output end of the capacitor C7 is connected to a base of a triode Q6, and an emitter of the triode Q6 is connected to a resistor R5 and a capacitor C6.
As a further improvement of the present technical solution, the output end of the transformer T1 is connected with a fuse F1.
The utility model discloses a second purpose lies in, provides a wireless charging system:
the receiving circuit comprises a coil T3, the output end of the coil T3 is connected with a capacitor C8, the output end of the capacitor C8 is connected with a rectifier diode D5, and the output end of the rectifier diode D5 is connected with a capacitor C9 and a capacitor C10
As a further improvement of the present technical solution, the charging circuit includes an indicator LED1 and a switch K1, the indicator LED1 is connected in parallel with the output end of the rectifier diode D5, and the switch K1 is connected in series with the negative electrode of the rectifier diode D5.
Compared with the prior art, the beneficial effects of the utility model are that:
in this module of charging and the wireless charging system who has this module of charging, a period of time through when charging terminal equipment is monitored, after this time quantum does not produce unusually, then the detection circuitry disconnection, make charging equipment can be in the charged state always, prevent to charge the disconnection on the way, some bluetooth headset because the reason of design has been solved, its inside needs set up the metal axle, this has just led to partial wireless charger can produce FOD (foreign matter detection) and report to the police, can't charge, some terminal equipment can produce high temperature when charging simultaneously, equipment automatic disconnection, and FOD (foreign matter detection) also can report to the police this moment, make the compatibility of wireless charger worsen.
Drawings
FIG. 1 is a schematic view of the overall working principle of the present invention;
fig. 2 is a schematic view of the working principle of the charging module of the present invention;
fig. 3 is the utility model discloses a wireless charging system theory of operation schematic diagram.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Referring to fig. 1 to fig. 3, the present embodiment provides a charging module and a wireless charging system having the same, including a power transmission circuit, a detection circuit, a transmitting circuit, and a control circuit, wherein:
the power transmission circuit reduces voltage and rectifies mains supply and then transmits the mains supply to the terminal equipment;
the detection circuit detects whether a metal foreign body exists between the wireless charger and the terminal equipment, and controls the on-off of the power transmission circuit according to the result;
the transmitting circuit includes a coil T2;
the control circuit comprises a chip U1, the chip U1 acquires terminal equipment information through a coil T2, a pin VCC of the chip U1 is connected with an output end of a power transmission circuit, a pin RX of the chip U1 is connected with a coil T2, a pin TX of the chip U1 is connected with a base electrode of a switch tube Q5, a collector electrode of the switch tube Q5 is connected with an output end of the power transmission circuit, an emitter electrode of a switch tube Q5 is connected with an input end of a detection circuit, the chip U1 is connected with the terminal equipment through the coils T2 and T3, the equipment information is acquired, charging monitoring is carried out on the terminal equipment for 30 seconds (time can be adjusted according to the chip U1), and after the time period is not abnormal, the detection circuit is disconnected, and halfway charging is prevented from being disconnected.
Besides, the power transmission circuit comprises a transformer T1, the output end of the transformer T1 is connected with a pin VCC of a chip U1, the output end of the transformer T1 is also connected with a collector of a switch tube Q5, the output end of the transformer T1 is connected with a rectifier diode D1, mains supply is subjected to voltage reduction through the transformer T1, then power is supplied to the chip U1 and the detection circuit, and rectification output is performed through a rectifier diode D1.
Further, the detection circuit comprises a switch S5, the input end of a switch S5 is connected with the emitter of a switch tube Q5, the output end of the switch S5 is sequentially connected with a triode Q1, a Q2, a Q3 and a Q4, an oscillation circuit is formed among the triodes Q1, Q2, Q3 and Q4, the output end of the switch S5 is connected with a capacitor C1 after passing through the triodes Q1, Q2, Q3 and Q4, the output end of the capacitor C1 is connected with the output end of a coil T2, the input end of the coil T2 is connected between the triode Q2 and the triode Q4 in parallel, the switch S5 and the triode Q4 are opened, the switch S5 is disconnected when the voltage reaches a preset value, the triode Q3 is switched on, and the current of the capacitor C1 can oscillate and gradually attenuate to 0; the presence or absence of the foreign object causes the current decay time to change, which is then calculated by the chip U1.
Further, the transmitting circuit comprises an oscillator U4, a pin NC of the oscillator U4 is connected with an output end of a rectifier diode, a pin 2 of the oscillator U4 is connected with a capacitor C5 and a resistor R3, a collector of a triode Q6 is connected between the capacitor C5 and a resistor R3, an output end of the resistor R3 is connected with a coil T2, an input end of the coil T2 is connected with a capacitor C7 in parallel, an output end of the capacitor C7 is connected with a base of a triode Q6, an emitter of the triode Q6 is connected with a resistor R5 and a capacitor C6, high-order harmonics are filtered through a second-order low-pass filter, stable sine wave output is obtained, the sine wave is output to a parallel resonant loop formed by a coil T2 and a capacitor C7 after passing through a class-C amplifying circuit formed by a peripheral circuit of the triode Q6, and energy is supplied to the receiving part.
In addition, in order to prevent the circuit from being damaged due to excessive current, a fuse F1 is connected to the output end of the transformer T1, and when the current is large, the fuse F1 starts to blow under the influence of the large current, so that the current cannot be continuously transmitted, thereby protecting the following circuit.
The utility model discloses a second purpose lies in, provides a wireless charging system:
the receiving circuit comprises a coil T3, the output end of the coil T3 is connected with a capacitor C8, the output end of the capacitor C8 is connected with a rectifier diode D5, the output end of the rectifier diode D5 is connected with a capacitor C9 and a capacitor C10, and currents of the coil T3 and a receiving coil T2 are rectified by the rectifier diode after passing through the capacitor C8 and then output to the charging circuit.
Further, the charging circuit comprises an indicator light LED1 and a switch K1, the indicator light LED1 is connected with the output end of the rectifier diode D5 in parallel, the switch K1 is connected with the negative electrode of the rectifier diode D5 in series, when the terminal equipment is charged, the indicator light LED1 lights a red light, when the terminal equipment is fully charged, the indicator light LED1 lights a green light, and meanwhile, the switch K1 is switched off, so that the overshoot phenomenon of the terminal equipment is prevented.
The foregoing shows and describes the basic principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A charging module, comprising: including transmission of electricity circuit, detection circuitry, transmitting circuit and control circuit, wherein:
the power transmission circuit reduces voltage and rectifies mains supply and then transmits the mains supply to the terminal equipment;
the detection circuit detects whether a metal foreign body exists between the wireless charger and the terminal equipment or not, and controls the on-off of the power transmission circuit according to the result;
the transmitting circuit comprises a coil T2;
the control circuit comprises a chip U1, the chip U1 obtains terminal equipment information through a coil T2, a pin VCC of the chip U1 is connected with the output end of a power transmission circuit, a pin RX of the chip U1 is connected with a coil T2, a pin TX of the chip U1 is connected with a base of a switch tube Q5, a collector of the switch tube Q5 is connected with the output end of the power transmission circuit, and an emitter of the switch tube Q5 is connected with the input end of a detection circuit.
2. The charging module of claim 1, wherein: the power transmission circuit comprises a transformer T1, the output end of the transformer T1 is connected with a pin VCC of a chip U1, the output end of the transformer T1 is also connected with a collector of a switch tube Q5, and the output end of the transformer T1 is connected with a rectifier diode D1.
3. The charging module of claim 1, wherein: the detection circuit comprises a switch S5, the input end of the switch S5 is connected with the emitter of a switch tube Q5, the output end of the switch S5 is sequentially connected with triodes Q1, Q2, Q3 and Q4, an oscillation circuit is formed among the triodes Q1, Q2, Q3 and Q4, the output end of the switch S5 is connected with a capacitor C1 after passing through the triodes Q1, Q2, Q3 and Q4, the output end of the capacitor C1 is connected with the output end of a coil T2, and the input end of the coil T2 is connected between the triode Q2 and the triode Q4 in parallel.
4. The charging module of claim 1, wherein: the transmitting circuit comprises an oscillator U4, a pin NC of the oscillator U4 is connected with an output end of a rectifier diode, a pin 2 of the oscillator U4 is connected with a capacitor C5 and a resistor R3, a collector of a triode Q6 is connected between the capacitor C5 and the resistor R3, an output end of the resistor R3 is connected with a coil T2, an input end of the coil T2 is connected with a capacitor C7 in parallel, an output end of the capacitor C7 is connected with a base of a triode Q6, and an emitter of the triode Q6 is connected with a resistor R5 and a capacitor C6.
5. The charging module of claim 2, wherein: the output end of the transformer T1 is connected with a fuse F1.
6. A wireless charging system comprising the charging module of any one of claims 1-5, wherein: the receiving circuit comprises a coil T3, the output end of the coil T3 is connected with a capacitor C8, the output end of the capacitor C8 is connected with a rectifier diode D5, and the output end of the rectifier diode D5 is connected with a capacitor C9 and a capacitor C10.
7. The wireless charging system of claim 6, wherein: the charging circuit comprises an indicator light LED1 and a switch K1, wherein the indicator light LED1 is connected with the output end of a rectifier diode D5 in parallel, and the switch K1 is connected with the negative electrode of a rectifier diode D5 in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221053188.2U CN217445062U (en) | 2022-05-05 | 2022-05-05 | Charging module and wireless charging system with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221053188.2U CN217445062U (en) | 2022-05-05 | 2022-05-05 | Charging module and wireless charging system with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217445062U true CN217445062U (en) | 2022-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221053188.2U Active CN217445062U (en) | 2022-05-05 | 2022-05-05 | Charging module and wireless charging system with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217445062U (en) |
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- 2022-05-05 CN CN202221053188.2U patent/CN217445062U/en active Active
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