CN104967222A - Multifrequency operation wireless power transfer transmitting terminal circuit - Google Patents
Multifrequency operation wireless power transfer transmitting terminal circuit Download PDFInfo
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- CN104967222A CN104967222A CN201510278086.9A CN201510278086A CN104967222A CN 104967222 A CN104967222 A CN 104967222A CN 201510278086 A CN201510278086 A CN 201510278086A CN 104967222 A CN104967222 A CN 104967222A
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Abstract
The invention discloses a multifrequency operation wireless power transfer (WPT) transmitting terminal circuit, comprising a transmitting coil and at least two receiving coils. The transmitting coil is in connection with a plurality of transmission circuits; each transmission circuit comprises an inverter or converting direct current into alternating current; the inverter is in connection with a transmitting terminal compensating circuit for synthesizing alternating current; the frequencies of the alternating current emitted by the inverters are different so as to adapt for different transmission distances. The transmitting coil can operate at different frequency points at the same time or at different time; when a coupling coil is closer, a system works in a low frequency close range mode so as to adapt for terminals with receiving terminals of lower work frequency, and when a coupling coil is farther, the system works in a high frequency middle range mode so as to adapt for terminals having receiving terminals of higher work frequency. The transmitting terminal circuit can meanwhile adapt for receiving terminal circuits of different work frequencies so as to reduce transmitting terminals, and avoid repetition and waste of wireless charging transmitting terminals.
Description
Technical field
The invention belongs to electric device field, particularly relate to a kind of wireless power transmission transmitting terminal circuit of multiple-frequency operation.
Background technology
Near field magnetic manifold type wireless power transmission technology (Wireless Power Transfer, WPT) is a kind of emerging electric energy transmission technology, and it utilizes the electromagnetic induction between coupling coil to realize the wireless transmission of electric energy.Compared to traditional wired delivery of electrical energy, wireless power transmission technology has the advantages such as safe, reliable, convenient, environmental suitability is strong.As shown in Figure 1, its system mainly comprises the regulator rectifier circuit etc. of the high-frequency inverter of transmitting terminal, coupling coil and compensating network thereof, receiving terminal to the structure of near field magnetic manifold type radio energy transmission system.
In recent years, along with the development of power electronic technology, this technology receives increasing research and apply.In existing near field magnetic manifold type radio energy transmission system, its transmitting terminal is usually operated near a frequency.For WPT system, lower operating frequency contributes to the loss reducing its transmitting terminal inverter and circuit, but its transmission range is very short.On the other hand, in order to improve the distance of electric energy wireless transmission, often need the design work frequency improving WPT system.According to faraday electromagnetic induction, higher operating frequency contributes to improving induced voltage when coupling coil mutual inductance is lower.Low frequency and the WPT system of high frequency have its corresponding application scenarios.The short-range transmission mode of low frequency is suitable for application as nearer in charging distances such as notebook computers, and the transmission mode of high frequency middle distance then can be used for the wireless chargers such as smart mobile phone and the application slightly far away of terminal distance.
In sum, in existing WPT system, its transmitting terminal is operated near a Frequency point, therefore, only can adaptive closely or the application of middle distance.Thus make dissimilar terminal need different transmitting terminal to carry out adaptation, cause the repetition and waste of adapter, be unfavorable for energy-conserving and environment-protective.
Summary of the invention
For solving the problem, the present invention discloses a kind of wireless power transmission transmitting terminal circuit of multiple-frequency operation.Transmitting coil of the present invention can simultaneously or time-sharing work in multiple Frequency point, involved transmitting terminal circuit can the receiving terminal circuit of adaptive different operating frequency simultaneously, thus reduce the quantity of transmitting terminal, avoid the repetition and waste of wireless charging transmitting terminal, the receiving terminal circuit of all right adaptive different operating frequency simultaneously, thus reduce the quantity of transmitting terminal, avoid the repetition and waste of wireless charging transmitting terminal.
For reaching above-mentioned technique effect, technical scheme of the present invention is:
A wireless power transmission transmitting terminal circuit for multiple-frequency operation, comprise 1 transmitting coil and the receiving coil being no less than 2, described transmitting coil is connected with multiple radiating circuit; Described radiating circuit comprises the inverter that direct current is become alternating current by, and inverter is connected with the transmitting terminal compensating circuit being carried out by alternating current synthesizing, and is connected after the parallel connection of each transmitting terminal compensating circuit with receiving coil; The frequency of the alternating current sent between each inverter is different, to adapt to different transmission ranges; The receiving coil that the alternating current that inverter sends is received respective frequencies alternating current by transmitting terminal compensating circuit and transmitting coil successively receives, alternating current is passed to receiving terminal compensating circuit by receiving coil, and receiving terminal compensating circuit is connected with and alternating current is carried out rectification and alternating current is become the rectifier that then direct current connect with corresponding load.
Further improvement, the ac frequency that each inverter spreads out of at least differs 5 times.
Further improvement, the inversion topological of described inverter is that full-bridge inverting is topological or semi-bridge inversion is topological or recommend inversion topological or E class inversion topological.
Further improvement, described receiving terminal compensating circuit is series resonance compensating circuit or non-series connection resonance compensation circuit.
Further improvement, described transmitting terminal compensating circuit comprises inductance component and capacitor element.
Advantage of the present invention:
Transmitting coil of the present invention can simultaneously or time-sharing work in multiple Frequency point.When the close together of coupling coil, system works is in low frequency closely pattern, thus the terminal that adaptive receiving terminal operating frequency is lower.When coupling coil distant, system works is in high frequency middle distance pattern, thus the terminal that adaptive receiving terminal operating frequency is higher.Transmitting terminal circuit involved in the present invention can the receiving terminal circuit of simultaneously adaptive different operating frequency, thus reduces the quantity of transmitting terminal, avoids the repetition and waste of wireless charging transmitting terminal.
Accompanying drawing explanation
The existing wireless power transmission schematic flow sheet of Fig. 1;
The wireless power transmission schematic flow sheet of Fig. 2 embodiment;
Fig. 3 embodiment radiating circuit artificial circuit figure;
The current/voltage simulation waveform schematic diagram of Fig. 4 embodiment radiating circuit;
Fig. 5 embodiment receiving circuit artificial circuit figure;
Fig. 6 embodiment transmitting coil electric current and receiving coil current simulations waveform schematic diagram.
Embodiment
Embodiment
The wireless power transmission transmitting terminal circuit of a kind of multiple-frequency operation as shown in figures 2-6, comprise a transmitting coil 11 and two receiving coils, two receiving coils are respectively receiving coil 1 and receiving coil 2 13, transmitting coil 12 is connected with two radiating circuits in parallel, a radiating circuit comprises the inverter 1 direct current being become high-frequency alternating current, and inverter 1 is connected with the transmitting terminal compensating circuit 1 being carried out by high-frequency alternating current synthesizing; Another radiating circuit comprises the inverter 26 direct current being become low frequency ac, and inverter 26 is connected with the transmitting terminal compensating circuit 27 being carried out by low frequency ac synthesizing; Be connected with transmitting coil 11 after transmitting terminal compensating circuit 1 is in parallel with transmitting terminal compensating circuit 27; After receiving coil 1 receives the high-frequency current that inverter 1 sends, high-frequency current is passed to receiving terminal compensating circuit 1, receiving terminal compensating circuit 1 is connected with and high-frequency alternating current is carried out rectification and alternating current is become direct current and the rectifier 1 that is connected of the load one 5 higher with operating frequency; After receiving coil 2 13 receives the low-frequency current that inverter 26 sends, low-frequency current is passed to receiving terminal compensating circuit 28, receiving terminal compensating circuit 28 is connected with and low frequency ac is carried out rectification and low frequency ac is become direct current and the rectifier 29 that is connected of the load two 10 lower with operating frequency; The frequency of the high-frequency alternating current that inverter 1 sends is 5 times of the frequency of the low frequency ac that inverter 26 sends.Described receiving terminal compensating circuit 1 is series resonance compensating circuit.
Transmitting terminal compensating circuit 1 shares a transmitting coil with transmitting terminal compensating circuit 27 as shown in Figure 2.The output voltage of inverter or electric current give transmitting coil 11 feed after corresponding compensating circuit, and the induced electromotive force of receiving coil carries out rectification and carries out direct current supply to respective load after corresponding receiving terminal compensating circuit.
Two inverters export the alternating voltage (electric current) of High-frequency and low-frequency respectively, and the power delivery of both is separate.Both synthesize by transmitting terminal compensating circuit, and both are separated by receiving terminal compensating circuit.Rectifier 1 and rectifier 29 carry out rectification to the alternating current of different frequency respectively, thus are utilized as respective load and carry out direct current supply.As can be seen here, the obvious difference of scheme proposed by the invention and prior art is, the radiating circuit of its WPT system works in two frequencies, and mode and the existing technical scheme of through-put power have obvious difference.
As shown in Figure 3, be the radiating circuit artificial circuit figure of the present embodiment.The direct current of three-phase electricity stable output after bridge rectifier, its input dc power is converted to alternating current by inverter 1 and inverter 26 respectively.In an embodiment, inverter is full-bridge inverter.According to different systems, its inversion topological also can for half-bridge, recommend, E class etc.Electric capacity 1 and the resonance frequency of inductance 1 of transmitting terminal compensating circuit 1 are the output frequency of inverter 1, and electric capacity 2 16 and the resonance frequency of inductance 2 17 of transmitting terminal compensating circuit 27 are the output frequency of inverter 26.By the filter action of resonance link, the output current of inverter is approximately sinusoidal.Inverter 1 superposes at transmitting coil with the output current of inverter 26.Transmitting terminal compensating circuit 1 also comprises electric capacity 3 18, and transmitting terminal compensating circuit 27 also comprises electric capacity 4 19, and electric capacity 3 18 and electric capacity 4 19 are for reconciling the load impedance of inverter one and inverter two.
Fig. 4 is the simulation waveform of electric current in embodiment, is respectively transmitting coil 11 electric current, inverter 1 output current, inverter 26 output current, inverter 1 output voltage, inverter 26 output voltage from top to bottom; As shown in Figure 6, the current simulations waveform of transmitting coil 11 electric current, receiving coil 1 is respectively from top to down.From embodiment simulation waveform, the current waveform of transmitting coil 11 is different from traditional WPT system.Its maximum difference is, its alternating current comprises the harmonic wave of two frequencies.The High-frequency and low-frequency harmonic component of transmitting coil 11 all can electric energy transmitting.According to different mode of operations, inverter 1 and inverter 26 can work simultaneously or only have one to carry out work.
As shown in Figure 5, in embodiment, receiving circuit uses series resonance to compensate, and resonance frequency is the output frequency of inverter 1.According to different application, its compensating circuit also can non-series connection resonance compensation.
As shown in Figure 6, transmitting coil 1 electric current, receiving coil 1 electric current is respectively from top to down.Therefore, receiving coil 1 only receives the active power exported by inverter 1, and automatic filtering low-order harmonic.Same, the resonance frequency of receiving coil 21 is also the output frequency of inverter 26, thus only receives the active power of inverter 26 output.
Can obviously infer from embodiment, radiating circuit and receiving circuit all can be multiple.
In the present invention, the inversion topological of inverter can be as full-bridge inverting is topological or semi-bridge inversion is topological or recommend the various structure such as inversion topological or E class inversion topological, is not limited to above-mentioned several.
The explanation of above example just understands core concept of the present invention for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (5)
1. a wireless power transmission transmitting terminal circuit for multiple-frequency operation, is characterized in that, comprise 1 transmitting coil and the receiving coil being no less than 2, described transmitting coil is connected with multiple radiating circuit; Described radiating circuit comprises the inverter that direct current is become alternating current by, and inverter is connected with the transmitting terminal compensating circuit being carried out by alternating current synthesizing, and is connected after the parallel connection of each transmitting terminal compensating circuit with receiving coil; The frequency of the alternating current sent between each inverter is different, to adapt to different transmission ranges; The receiving coil that the alternating current that inverter sends is received respective frequencies alternating current by transmitting terminal compensating circuit and transmitting coil successively receives, alternating current is passed to receiving terminal compensating circuit by receiving coil, and receiving terminal compensating circuit is connected with and alternating current is carried out rectification and alternating current is become the rectifier that then direct current connect with corresponding load.
2. the wireless power transmission transmitting terminal circuit of multiple-frequency operation as claimed in claim 1, it is characterized in that, the frequency of the alternating current that each inverter spreads out of at least differs 5 times.
3. the wireless power transmission transmitting terminal circuit of multiple-frequency operation as claimed in claim 1, is characterized in that, the inversion topological of described inverter is that full-bridge inverting is topological or semi-bridge inversion is topological or recommend inversion topological or E class inversion topological.
4. the wireless power transmission transmitting terminal circuit of multiple-frequency operation as claimed in claim 1, it is characterized in that, described receiving terminal compensating circuit is series resonance compensating circuit or non-series connection resonance compensation circuit.
5. the wireless power transmission transmitting terminal circuit of multiple-frequency operation as claimed in claim 1, it is characterized in that, described transmitting terminal compensating circuit comprises inductance component and capacitor element.
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| CN201510278086.9A CN104967222A (en) | 2015-05-27 | 2015-05-27 | Multifrequency operation wireless power transfer transmitting terminal circuit |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106887905A (en) * | 2015-12-14 | 2017-06-23 | 松下知识产权经营株式会社 | Electrical power transmission system and controller |
| CN107040040A (en) * | 2015-10-23 | 2017-08-11 | 松下知识产权经营株式会社 | Electric power route deivce device and power transmission system |
| CN107104613A (en) * | 2017-06-29 | 2017-08-29 | 同济大学 | A kind of synchronous electric motor rotor exciting method and device |
| CN107222002A (en) * | 2017-06-29 | 2017-09-29 | 广州吻吻科技有限公司 | A kind of wireless charging system |
| CN107222003A (en) * | 2017-07-07 | 2017-09-29 | 江南大学 | A kind of noncontact portable computer integrated wireless charger |
| CN107785985A (en) * | 2017-11-09 | 2018-03-09 | 黎辉 | A kind of low-and high-frequency combined type electric supply installation |
| CN108400657A (en) * | 2018-03-23 | 2018-08-14 | 武汉大学 | A kind of omnibearing selective radio energy transmission system |
| CN108808886A (en) * | 2018-01-10 | 2018-11-13 | 深圳市思坎普科技有限公司 | Transmitting equipment, wireless power supply system and the wireless lighting systems of wireless power supply system |
| CN108847706A (en) * | 2018-09-03 | 2018-11-20 | 北京有感科技有限责任公司 | A kind of multi-frequency wireless charging device and its application |
| US10416742B2 (en) * | 2017-02-17 | 2019-09-17 | Microsoft Technology Licensing, Llc | Smart battery for ultrafast charging |
| CN111725738A (en) * | 2020-07-27 | 2020-09-29 | 国网黑龙江省电力有限公司电力科学研究院 | High-voltage line insulator electromagnetic deicing system |
| CN112713666A (en) * | 2021-01-13 | 2021-04-27 | 重庆大学 | Double-frequency double-load multi-relay MC-WPT system based on shared energy channel |
| CN113517764A (en) * | 2021-09-13 | 2021-10-19 | 江苏鑫康微电子科技有限公司 | Wireless charging system for real-time calibration of resonant frequency of transmitting terminal |
| CN113997804A (en) * | 2021-10-27 | 2022-02-01 | 重庆前卫无线电能传输研究院有限公司 | Wireless power supply system for ship |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107040040A (en) * | 2015-10-23 | 2017-08-11 | 松下知识产权经营株式会社 | Electric power route deivce device and power transmission system |
| CN106887905A (en) * | 2015-12-14 | 2017-06-23 | 松下知识产权经营株式会社 | Electrical power transmission system and controller |
| CN106887905B (en) * | 2015-12-14 | 2021-11-26 | 松下知识产权经营株式会社 | Power transmission system and controller |
| US10416742B2 (en) * | 2017-02-17 | 2019-09-17 | Microsoft Technology Licensing, Llc | Smart battery for ultrafast charging |
| US11199891B2 (en) | 2017-02-17 | 2021-12-14 | Microsoft Technology Licensing, Llc | Smart battery for ultrafast charging |
| CN107104613A (en) * | 2017-06-29 | 2017-08-29 | 同济大学 | A kind of synchronous electric motor rotor exciting method and device |
| CN107222002A (en) * | 2017-06-29 | 2017-09-29 | 广州吻吻科技有限公司 | A kind of wireless charging system |
| CN107222003A (en) * | 2017-07-07 | 2017-09-29 | 江南大学 | A kind of noncontact portable computer integrated wireless charger |
| CN107785985A (en) * | 2017-11-09 | 2018-03-09 | 黎辉 | A kind of low-and high-frequency combined type electric supply installation |
| CN107785985B (en) * | 2017-11-09 | 2020-06-26 | 黎辉 | High-low frequency combined type power supply unit |
| CN108808886A (en) * | 2018-01-10 | 2018-11-13 | 深圳市思坎普科技有限公司 | Transmitting equipment, wireless power supply system and the wireless lighting systems of wireless power supply system |
| CN108400657A (en) * | 2018-03-23 | 2018-08-14 | 武汉大学 | A kind of omnibearing selective radio energy transmission system |
| CN108847706A (en) * | 2018-09-03 | 2018-11-20 | 北京有感科技有限责任公司 | A kind of multi-frequency wireless charging device and its application |
| CN111725738A (en) * | 2020-07-27 | 2020-09-29 | 国网黑龙江省电力有限公司电力科学研究院 | High-voltage line insulator electromagnetic deicing system |
| CN111725738B (en) * | 2020-07-27 | 2021-10-01 | 国网黑龙江省电力有限公司电力科学研究院 | High-voltage line insulator electromagnetic deicing system |
| CN112713666A (en) * | 2021-01-13 | 2021-04-27 | 重庆大学 | Double-frequency double-load multi-relay MC-WPT system based on shared energy channel |
| CN112713666B (en) * | 2021-01-13 | 2023-08-18 | 重庆大学 | Dual-frequency dual-load multi-relay MC-WPT system based on shared energy channel |
| CN113517764A (en) * | 2021-09-13 | 2021-10-19 | 江苏鑫康微电子科技有限公司 | Wireless charging system for real-time calibration of resonant frequency of transmitting terminal |
| CN113997804A (en) * | 2021-10-27 | 2022-02-01 | 重庆前卫无线电能传输研究院有限公司 | Wireless power supply system for ship |
| CN113997804B (en) * | 2021-10-27 | 2023-06-30 | 重庆前卫无线电能传输研究院有限公司 | Wireless power supply system for ship |
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Application publication date: 20151007 |