CN210327155U - Suspension wireless power transmission device and suspension charger - Google Patents
Suspension wireless power transmission device and suspension charger Download PDFInfo
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- CN210327155U CN210327155U CN201920976505.XU CN201920976505U CN210327155U CN 210327155 U CN210327155 U CN 210327155U CN 201920976505 U CN201920976505 U CN 201920976505U CN 210327155 U CN210327155 U CN 210327155U
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Abstract
The utility model discloses a wireless power transmission device suspends, including suspension system, establish the wireless power transmission system on suspension system, suspension system includes base magnet, suspends and establishes at the float magnet of base magnet top, establish the detecting system in the base magnet outside. Float magnet suspension is in base magnet top, detects the float magnet of suspension in base magnet top through detecting system and whether takes place offset and adjust float magnet position, above suspension wireless power transmission device realized magnetic suspension wireless power transmission's function, solved the weak point that traditional wired power transmission exists, just the utility model discloses a suspension wireless power transmission device has advantages such as the cost of manufacture is low, the practicality is strong, noiselessness, use flexibility, expansibility are strong, long service life. The utility model also discloses a suspension charger, including foretell wireless power transmission device of suspension.
Description
Technical Field
The utility model relates to a wireless power transmission field, in particular to wireless power transmission device and suspension charger suspend.
Background
Traditional electric power generally relies on the electric wire medium to transmit, carries out power transmission with the help of the electric wire and takes place accident such as electric wire wearing and tearing even burnout easily, has the potential safety hazard, and in practical application, the electric wire is crisscross mixed and disorderly very easily, and is inconvenient in the use.
And cell phones are currently the most common personal consumer electronics. People's trip basically can not leave the cell-phone, and traditional cell-phone charge mode is wired charging, and traditional wired charge mode brings a great deal of inconvenience for people, probably has the potential safety hazard of spark and electric shock during the charging, and the mouth that charges after long-term the use still can leave the laying dust, and the part can be ageing, still can intake, and the interface also has wearing and tearing, rusty, deformation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve the not enough of prior art, provide a wireless power transmission device of suspension and suspension charger.
The utility model provides a technical scheme that above-mentioned technical problem adopted is:
suspension wireless power transmission device, including suspension system, establish the wireless power transmission system on suspension system, suspension system includes base magnet, suspension establishes the float magnet in base magnet top, establishes the detecting system in the base magnet outside. In the technical scheme, the base magnet and the floater magnet are oppositely arranged in the same magnetic level, the floater magnet is suspended above the base magnet under the action of magnetic field force with like poles repelling each other, and the detection system detects whether the position of the floater magnet suspended above the base magnet deviates or not and adjusts the position of the floater magnet; the wireless power transmission system comprises a power transmitting module arranged on the base magnet and a power receiving module arranged on the floater magnet. The power transmitting module comprises a power transmission coil with the outer diameter of 81mm and the inner diameter of 70mm and a voltage stabilizing module mainly made of an XKT-412 chip; the power receiving module comprises a power receiving coil with an outer diameter of 52mm and an inner diameter of 30mm and a voltage stabilizing module mainly made of an LM7805 voltage stabilizer. After the power supply is switched on, the power transmitting module generates a certain current in the power receiving coil through electromagnetic induction based on alternating current with a certain frequency, so that point energy is transferred from the power transmitting module to the power receiving module; when the suspension wireless power transmission device is applied to charging of a mobile phone, the current received by the power receiving module is output by the voltage stabilizing module to be 5v, and the voltage is stably charged to the mobile phone through the charging head at the mobile phone end. Above suspension wireless power transmission device realized magnetic suspension wireless power transmission's function, solved the weak point that traditional wired power transmission exists, just the utility model discloses a suspension wireless power transmission device has advantages such as cost of manufacture is low, the practicality is strong, noiselessness, use nimble, the expansibility is strong, long service life.
Preferably, the detection system includes a detection circuit provided outside the base magnet for detecting the float magnet. In the technical scheme, the detection circuit is used for detecting whether the floater magnet exists above the base magnet, and when the detection circuit detects that the floater magnet exists above the base magnet, the detection system detects whether the position of the floater magnet suspended above the base magnet deviates in real time and adjusts the position of the floater magnet; when the detection circuit does not detect that the float magnet exists above the base magnet, the detection system stops detecting the positional deviation of the float magnet. The design saves the electric power of the suspension wireless power transmission device in a standby state, and has stronger expansibility, technicians can combine the detection circuit design into the alarm circuit, and when the floater magnet falls off from the upper part of the base magnet, the signal received by the detection circuit changes, so that the alarm is triggered to prompt peripheral personnel.
Preferably, the detection system further comprises an adjusting circuit connected with the detection circuit and used for generating a magnetic field to adjust the position of the floater magnet, and a displacement amplification comparison circuit connected with the adjusting circuit and used for collecting a displacement deviation signal of the floater magnet. In the technical scheme, when the detection circuit detects that the floater magnet is above the base magnet, the adjusting circuit is started to work, and adjusts the position of the floater magnet according to a floater magnet displacement deviation signal acquired by the displacement amplification and comparison circuit; the adjusting circuit controls the coil arranged at the periphery of the base magnet, so that the coil generates a magnetic field and generates magnetic field force to the floater magnet, and the position of the floater magnet is adjusted.
Preferably, the detection circuit includes a first hall linear sensor U1, a voltage comparator U5 connected to the first hall linear sensor U1, and a MOS transistor Q1 connected to the voltage comparator, and the MOS transistor Q1 is further connected to the adjustment circuit and is used for controlling a switch of the input voltage of the adjustment circuit. In the above technical solution, when the first hall linear sensor U1 has no magnetic field passing through in the front and back directions, it is the midpoint voltage of the output power, and when the S pole passes through the front of the first hall linear sensor U1, the output voltage increases as the magnetic force increases, otherwise, the output voltage decreases. When the center of the float magnet is horizontally placed at the top of the first hall linear sensor U1, the center N, S poles of the float magnet are mutually offset, so that the first hall linear sensor U1 does not measure the magnetic field, and therefore, an intermediate voltage is output, when the float magnet is slightly offset from the center, the first hall linear sensor U1 is no longer in the equilibrium state of the magnetic field, or appears as an N pole or an S pole, the first hall linear sensor U1 outputs a corresponding voltage signal, and the changed signal can be used as a displacement signal after being amplified and compared; similarly, when the first hall linear sensor U1 faces the float magnet, the change signal of the first hall linear sensor U1 indicates whether the float magnet is placed thereon, i.e., detection of the float magnet is achieved. The first hall linear sensor U1 sends a detected signal to the voltage comparator U5, and the signal detected by the first hall linear sensor U1 is sent to the pin 6 IN-pin of the U5 of the voltage comparator and compared with the reference voltage of the pin 5, which is 2.5V. When the first hall linear sensor U1 detects the signal that the floater magnet exists, the first hall linear sensor U1 outputs a voltage higher than 2.5 volts, the 7 th pin OUT1 of the voltage comparator U5 outputs a low potential, and the MOS transistor Q1 is conducted to output VCC voltage to supply power to the adjusting circuit. Voltage comparator U5 includes a LM393 comparator.
Preferably, the displacement amplification comparison circuit comprises a second hall linear sensor U2 and an inverse proportional amplifier U3 connected with the second hall linear sensor U2, the second hall linear sensor U2 transmits the collected displacement signal of the floater magnet to an inverse input end of the inverse proportional amplifier U3, a positive input end of the inverse proportional amplifier U3 is connected with the first divider resistor R1, and an output end of the inverse proportional amplifier U3 is connected with the adjusting circuit. In the above technical solution, the external stable VDD voltage is divided by the first voltage dividing resistor R1 and then transmitted to the 3 rd pin of the inverse proportional amplifier U3, and is used as the reference signal of the inverse proportional amplifier U3; the second hall linear sensor U2 transmits the detected position signal of the float magnet to the 2 nd leg of the inverse proportional amplifier U3 and compares it with the reference signal, thereby generating an effective displacement error signal, which is transmitted from the first leg of the inverse proportional amplifier U3 to the adjusting circuit, which performs position adjustment of the float magnet.
Preferably, the adjustment circuit includes a coil for generating a magnetic field and adjusting the displacement of the float magnet, a driver connected to the coil for driving the coil to change the magnetic field, and a switching circuit connected to the driver for generating and transmitting a positive and negative rotation logic signal to the driver. Among the above technical scheme, the coil is evenly established in float magnet below, the utility model discloses a four coils, coil produce the horizontal displacement of magnetic force adjustment float magnet, and magnetic force requirement is stronger, so the centre of coil has increased the iron core in order to strengthen magnetic force, and every a set of all ends of the same name link to each other moreover, and the purpose is used in when float magnet, when float magnet is partial to one side, can adjust float magnet through magnetic field force. The driver comprises an integrated chip PT5126A, two input ends of the driver input opposite logic to enable the coil to be phase-switched, namely two paths of opposite phase signals output by the switching circuit are respectively sent to a pin 6 and a pin 7 of the driver, and a driving signal is output according to a truth table to control the coil to generate a corresponding adjusting magnetic field. The truth table is as follows:
preferably, the conversion circuit includes a first dual operational amplifier U4 and a second dual operational amplifier U5, the first dual operational amplifier U4 is connected to a forward input terminal of the second dual operational amplifier U5, an inverting input terminal of the first dual operational amplifier U4 is connected to an output terminal of the inverse proportional amplifier U3, an inverting input terminal of the second dual operational amplifier U5 is connected to one end of a second voltage-dividing resistor R2 and one end of a third voltage-dividing resistor R3, the other end of the second voltage-dividing resistor R2 is further connected to an output terminal of the first dual operational amplifier U4, the other end of the third voltage-dividing resistor R3 is further connected to an output terminal of the second dual operational amplifier U5, and output terminals of the first dual operational amplifier U4 and the second dual operational amplifier U5 are connected to the driver, respectively. In the technical scheme, two paths of operational amplifiers U4 and U5 made of LM358 chips are connected into forward and reverse logic signal conversion, the forward input ends of the two paths of amplifiers are connected together, and the divided voltage formed by R4 and R5 is used as a reference signal for the reverse rotation of the two paths of operational amplifiers; meanwhile, R19, C10, R19, R17, R16 and a first double operational amplifier U4 in the conversion circuit form a proportional amplification and differentiation circuit to amplify and differentiate an input error deviation signal, so that when the floater magnet suddenly deviates from a central point, the error signal is amplified and sent to a driver after passing through a first double operational amplifier U4 differentiation circuit, and the expressed result is that the driving time of a certain corresponding direction in the first half section is longer, and the magnet is quickly pulled back to the central point; the driving time sent to the corresponding driving direction is gradually reduced when the driving time gradually returns to the vicinity of the middle point, thereby realizing the PD control. The second dual operational amplifier U5 is divided by R2 and R3, then input to the inverting input terminal of the second dual operational amplifier U5 through R15, and compared with the divided voltage 2.5V composed of R4 and R5 to be used as the slave output, that is, the first dual operational amplifier U4 is the master, the second dual operational amplifier U5 is the slave, but the outputs of the two are opposite. When the first dual operational amplifier U4 outputs a low level, the voltage at the node is less than 2.5V after the voltage division by R2 and R3, i.e. the voltage at the inverting terminal of the second dual operational amplifier U5 is lower than 2.5V at the positive terminal, and the second dual operational amplifier U5 outputs a high level, or vice versa. The first double operational amplifier U4 and the second double operational amplifier U5 form a master-slave positive and negative rotation logic signal conversion circuit, and the function of adjusting the position of the float magnet is realized through a driver.
Preferably, the wireless power transmission system includes a power transmitting module, and a power receiving module connected to the power transmitting module. In the above technical solution, the wireless power transmission system includes a power transmitting module disposed on the base magnet, and a power receiving module disposed on the float magnet. The power transmitting module comprises a power transmission coil with the outer diameter of 81mm and the inner diameter of 70mm and a voltage stabilizing module mainly made of an XKT-412 chip; the power receiving module comprises a power receiving coil with an outer diameter of 52mm and an inner diameter of 30mm and a voltage stabilizing module mainly made of an LM7805 voltage stabilizer. After the power supply is switched on, the power transmitting module generates a certain current in the power receiving coil through electromagnetic induction based on alternating current with a certain frequency, so that point energy is transferred from the power transmitting module to the power receiving module; when the suspension wireless power transmission device is applied to charging of a mobile phone, the current received by the power receiving module is output by the voltage stabilizing module to be 5v, and the voltage is stably charged to the mobile phone through the charging head at the mobile phone end.
Preferably, the power transmitting module includes a wireless transmitting circuit; the power receiving module comprises a power receiving coil and a three-terminal regulator connected with the power receiving coil. Among the above technical scheme, power transmission module charges the head through removing the end and transmits electric power to removing the end, removes the end and charges the head and be connected with three terminal regulator. The power transmitting circuit comprises a high-frequency high-power integrated circuit XKT-412 chip, the chip has small volume and strong output power, can work in a higher frequency range, can greatly reduce the volume and the size of a transmitting coil, enhance the transmitting power and reduce the coil cost, and can also directly adopt a PCB as transmitting to ensure that the production and the application are simpler and more convenient due to small requirement on the inductance of the coil; the XKT-412 chip adopts the most advanced chip design process of the wide voltage self-adaptive technology, the same transmitting circuit can be used in any working range without changing any device, the use is very convenient, the circuit is very simple, the characteristics are that the precision is high, the stability is good, the function of automatically adapting to the power supply voltage regulation is realized, the XKT-412 chip can work under a wider voltage, the automatic frequency locking is realized, the load is automatically detected negatively, the automatic power control is realized, the high-speed energy power transmission is realized, the intelligent detection system is free from debugging and the like, and the XKT-412 chip is specially used in a wireless induction intelligent charging and power supply management system and has high reliability. The XKT-412 is responsible for processing the wireless power transmission function in the system, adopts the electromagnetic energy conversion principle and is matched with the receiving part to carry out energy conversion and real-time monitoring of a circuit; the XKT-412 can be made into a highly reliable wireless quick charger and a wireless power supply by matching with few external elements.
The power receiving module comprises an LM7805 three-terminal voltage-stabilizing integrated chip, the LM7805 three-terminal voltage-stabilizing integrated chip provides the output voltage of the DC5V, and an overcurrent and overload protection circuit is arranged in the LM7805 three-terminal voltage-stabilizing integrated chip. As the name suggests, the three-terminal voltage-stabilizing integrated chip only has three pin outputs, namely an input terminal, a grounding terminal and an output terminal. The internal circuit of the three-terminal voltage-stabilizing integrated chip has the functions of overvoltage protection, overcurrent protection and overheat protection, so that the performance of the three-terminal voltage-stabilizing integrated chip is stable, and the output current of more than 1A can be realized. The three-terminal voltage stabilization integrated chip can also eliminate noise influence by using local regulation, the dispersion problem related to single-point regulation is solved, and the error precision of output voltage is +/-3% and +/-5%. Of course, the use of LM7805 requires extra attention, and the input-output voltage difference cannot be too large, and if the input-output voltage difference is too large, the conversion efficiency is rapidly reduced, and the breakdown and the damage are easy. The highest input voltage cannot exceed 35V; the output current cannot be too large, 1.5A is the limit value, the input-output voltage difference cannot be too small, and the voltage stabilizing efficiency of the voltage stabilizing circuit can be rapidly reduced due to the input-output voltage difference lower than 2V. Make the stable output of power receiving module accord with the 5V voltage that the cell-phone charges through LM7805 three-terminal steady voltage integrated chip, increased the utility model discloses a practicality.
The utility model also provides a suspension charger, including suspension wireless power transmission device. Among the above technical scheme, the suspension charger that uses suspension wireless power transmission device to make has low cost, low-power consumption, low noise, the stable advantage of charging to solved traditional wired charger charging wire easy wear, have the potential safety hazard, the mouth that charges after long-term the use still can leave laying dust, interface can wear and tear, rust, shortcomings such as deformation.
Right the utility model discloses a power transmission module in suspension wireless power transmission device and the suspension charger stabilizes input 12V voltage to measure the output voltage who obtains power transmission module, gather power transmission module's output voltage and stabilize input 12V voltage contrast with the theory, reachs the utility model discloses a suspension wireless power transmission device and suspension charger have good practicality, and the experimental data is as follows:
will the utility model discloses a suspension wireless power transmission device and suspension charger are connected or break off with the cell-phone to gather its output voltage who is connected or the disconnection of power transmission module with the cell-phone, and carry out the comparison to its output voltage who is connected or the disconnection of power transmission module with the cell-phone, thereby reachs the utility model discloses a suspension wireless power transmission device and suspension charger have good practicality, and the experimental data is as follows:
the utility model has the advantages that:
1. the utility model discloses a suspension wireless power transmission device has solved the easy ageing wearing and tearing of traditional wired power transmission device line, has had the weak point of potential safety hazard etc to promoted power transmission's stability, security, practicality, reduced the noise among the power transmission process and the utility model discloses a suspension wireless power transmission device has good expansibility.
2. The utility model discloses a suspension charger has solved the easy ageing wearing and tearing of traditional charger line, has the weak point of potential safety hazard etc to the security, stability and the practicality of suspension charger have been promoted.
Drawings
Fig. 1 is a system schematic diagram of a suspension system of the present invention;
fig. 2 is a schematic circuit diagram of the detection circuit of the present invention;
fig. 3 is a schematic circuit diagram of the displacement amplification comparison circuit of the present invention;
fig. 4 is a schematic circuit diagram of the adjusting circuit of the present invention;
FIG. 5 is a schematic circuit diagram of the displacement amplifying and comparing circuit and the adjusting circuit according to the present invention;
fig. 6 is a schematic circuit diagram of the conversion circuit of the present invention;
fig. 7 is a schematic circuit diagram of the wireless transmitting circuit of the present invention.
In the figure: 1. the device comprises a floater magnet, 2, a base magnet, 3, a coil, 4, a displacement amplification comparison circuit, 5, a detection circuit, 6 and a driver.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments.
The first embodiment is as follows:
as shown in fig. 1-7, the levitation wireless power transmission device includes a levitation system, and a wireless power transmission system connected to the levitation system, where the levitation system includes a base magnet 2, a float magnet 1 levitated above the base magnet 2, and a detection system disposed outside the base magnet 2.
In the present embodiment, the detection system includes a detection circuit 5 provided outside the base magnet 2 and detecting the float magnet 1.
In this embodiment, the detection system further includes an adjustment circuit connected to the detection circuit 5 for generating a magnetic field to adjust the position of the float magnet 1, and a displacement amplification comparison circuit 4 connected to the adjustment circuit for acquiring a displacement deviation signal of the float magnet 1.
In this embodiment, the detection circuit 5 includes a first hall linear sensor U1, a voltage comparator U6 connected to the first hall linear sensor U1, and a MOS transistor Q1 connected to the voltage comparator U6, and the MOS transistor Q1 is further connected to the adjustment circuit and is configured to control a switch of an input voltage of the adjustment circuit.
In this embodiment, the displacement amplification comparison circuit 4 includes a second hall linear sensor U2 and a reverse proportional amplifier U3 connected to the second hall linear sensor U2, the second hall linear sensor U2 transmits the collected displacement signal of the float magnet 1 to a reverse input terminal of the reverse proportional amplifier U3, a forward input terminal of the reverse proportional amplifier U3 is connected to the first voltage dividing resistor R1, and an output terminal of the reverse proportional amplifier U3 is connected to the adjustment circuit.
In the present embodiment, the adjusting circuit includes a coil 3 for generating a magnetic field and adjusting the displacement of the float magnet 1, a driver 6 connected to the coil 3 and for driving the coil 3 to change the magnetic field, and a switching circuit connected to the driver 6 and for generating and transmitting a forward/reverse logic signal to the driver 6.
In this embodiment, the conversion circuit includes a first dual operational amplifier U4 and a second dual operational amplifier U5, the first dual operational amplifier U4 is connected to a forward input terminal of the second dual operational amplifier U5, an inverting input terminal of the first dual operational amplifier U4 is connected to an output terminal of the inverse proportional amplifier U3, an inverting input terminal of the second dual operational amplifier U5 is connected to one end of a second voltage-dividing resistor R2 and one end of a third voltage-dividing resistor R3, the other end of the second voltage-dividing resistor R2 is further connected to an output terminal of the first dual operational amplifier U4, the other end of the third voltage-dividing resistor R3 is further connected to an output terminal of the second dual operational amplifier U5, and output terminals of the first dual operational amplifier U4 and the second dual operational amplifier U5 are connected to the driver 6.
In this embodiment, the wireless power transmission system includes a power transmitting module and a power receiving module connected to the power transmitting module.
In this embodiment, the power transmitting module includes a wireless transmitting circuit; the power receiving module comprises a power receiving coil and a three-terminal regulator connected with the power receiving coil.
Example two:
as shown in fig. 1 to 7, the present embodiment is different from the first embodiment in that the levitation charger of the present embodiment includes the levitation wireless power transmission device of the first embodiment.
In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or positional relationship thereof is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The same creation is considered to be simply replaced without changing the creation content of the present invention. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. Suspension wireless power transmission device, its characterized in that: including suspension system, the wireless power transmission system who is connected with suspension system, suspension system includes base magnet (2), suspends and establishes float magnet (1) in base magnet (2) top, establishes the detecting system in the base magnet (2) outside.
2. The floating wireless power transfer apparatus of claim 1, wherein: the detection system comprises a detection circuit (5) which is arranged outside the base magnet (2) and is used for detecting the floater magnet (1).
3. The floating wireless power transfer apparatus of claim 2, wherein: the detection system also comprises an adjusting circuit which is connected with the detection circuit (5) and used for generating a magnetic field to adjust the position of the floater magnet (1), and a displacement amplification comparison circuit (4) which is connected with the adjusting circuit and used for collecting displacement deviation signals of the floater magnet (1).
4. The floating wireless power transfer apparatus of claim 2 or 3, wherein: the detection circuit (5) comprises a first Hall linear sensor (U1), a voltage comparator (U6) connected with the first Hall linear sensor (U1) and an MOS (Q1) connected with the voltage comparator (U6), and the MOS (Q1) is further connected with the adjusting circuit.
5. The floating wireless power transfer apparatus of claim 4, wherein: the displacement amplification comparison circuit (4) comprises a second Hall linear sensor (U2) and a reverse proportional amplifier (U3) connected with the second Hall linear sensor (U2), the second Hall linear sensor (U2) transmits collected displacement signals of the floater magnet (1) to the reverse input end of the reverse proportional amplifier (U3), the forward input end of the reverse proportional amplifier (U3) is connected with a first voltage dividing resistor (R1), and the output end of the reverse proportional amplifier (U3) is connected with the adjusting circuit.
6. The floating wireless power transfer apparatus of claim 3 or 5, wherein: the adjusting circuit comprises a coil (3) for generating a magnetic field and adjusting the displacement of the float magnet (1), a driver (6) connected with the coil (3) and used for driving the coil (3) to change the magnetic field, and a switching circuit connected with the driver (6) and used for generating and transmitting a positive and negative rotation logic signal to the driver (6).
7. The floating wireless power transfer apparatus of claim 6, wherein: the conversion circuit comprises a first dual operational amplifier (U4) and a second dual operational amplifier (U5), wherein the first dual operational amplifier (U4) is connected with the forward input end of the second dual operational amplifier (U5), the inverting input end of the first dual operational amplifier (U4) is connected with the output end of an inverting proportional amplifier (U3), the inverting input end of the second dual operational amplifier (U5) is respectively connected with one ends of a second divider resistor (R2) and a third divider resistor (R3), the other end of the second divider resistor (R2) is further connected with the output end of the first dual operational amplifier (U4), the other end of the third divider resistor (R3) is further connected with the output end of the second dual operational amplifier (U5), and the output ends of the first dual operational amplifier (U4) and the second dual operational amplifier (U5) are respectively connected with a driver (6).
8. The floating wireless power transfer device of claim 1, 2, 3, 5 or 7, wherein: the wireless power transmission system comprises a power transmitting module and a power receiving module connected with the power transmitting module.
9. The floating wireless power transfer apparatus of claim 8, wherein: the power transmitting module comprises a wireless transmitting circuit; the power receiving module comprises a power receiving coil and a three-terminal regulator connected with the power receiving coil.
10. Suspension charger, its characterized in that: comprising the floating wireless power transfer device of claim 9.
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| CN201920976505.XU CN210327155U (en) | 2019-06-26 | 2019-06-26 | Suspension wireless power transmission device and suspension charger |
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| CN201920976505.XU CN210327155U (en) | 2019-06-26 | 2019-06-26 | Suspension wireless power transmission device and suspension charger |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110138098A (en) * | 2019-06-26 | 2019-08-16 | 中国计量大学 | A kind of suspension wireless power transmission device and suspension charger |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110138098A (en) * | 2019-06-26 | 2019-08-16 | 中国计量大学 | A kind of suspension wireless power transmission device and suspension charger |
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