CN112467889A - Segmented guide rail type wireless energy transmitting mechanism with signal coil and transmission system - Google Patents
Segmented guide rail type wireless energy transmitting mechanism with signal coil and transmission system Download PDFInfo
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- CN112467889A CN112467889A CN202011329324.1A CN202011329324A CN112467889A CN 112467889 A CN112467889 A CN 112467889A CN 202011329324 A CN202011329324 A CN 202011329324A CN 112467889 A CN112467889 A CN 112467889A
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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
- 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
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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
- 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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- H04B5/24—
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Abstract
The invention relates to the technical field of wireless power transmission, and particularly discloses a segmented guide rail type wireless energy transmitting mechanism with a signal coil and a transmission system, wherein the system comprises a transmitting end and a receiving end; the transmitting end is a wireless energy transmitting mechanism and comprises a plurality of guide rail type wireless energy transmitting coils and a primary side signal coil overlapped with the guide rail type wireless energy transmitting coils, wherein each guide rail type wireless energy transmitting coil is arranged in a DD type energy transmitting coil structure, and the primary side signal coil is arranged in parallel relative to the whole guide rail type wireless energy transmitting coils in the width direction to form a Q type primary side signal coil structure; the receiving end comprises a secondary signal coil and a wireless energy receiving coil, the secondary signal coil is in a Q-type secondary signal coil structure, and the wireless energy receiving coil is in a DD-type energy receiving coil structure. The energy and signal transmission channels of the invention respectively adopt the DD coil and the Q coil, and because the DD coil and the Q coil can realize natural decoupling, the parallel transmission of energy and signals is realized.
Description
Technical Field
The invention relates to the technical field of wireless power transmission, in particular to a segmented guide rail type wireless energy transmitting mechanism with a signal coil and a transmission system.
Background
The wireless charging technology has the advantages of flexibility, reliability, safety and the like. The method is more and more widely applied to the fields of unmanned aerial vehicles, household appliances, electric automobiles and the like. In order to realize optimal system energy efficiency and state monitoring and improve the performance of a wireless charging system, the wireless charging system often needs primary and secondary communication interaction information.
However, in the dynamic charging process, the power receiving end is in a fast moving state, the access time of the traditional communication modes such as WiFi and Zigbee is long, and the transmission speed is slow, so that the dynamic charging communication requirements cannot be met. Therefore, a communication mode of parallel transmission of short-delay and fast-access energy signals is urgently needed to be provided to correspond to the dynamic wireless charging system.
Disclosure of Invention
The invention provides a segmented guide rail type wireless energy transmitting mechanism with a signal coil and a transmission system, and solves the technical problems that: how to realize the parallel transmission of energy and signals in a dynamic wireless charging system.
In order to solve the technical problems, the invention provides a segmented guide rail type wireless energy transmitting mechanism with signal coils, which comprises a plurality of segments of guide rail type wireless energy transmitting coils and a primary side signal coil overlapped with the segments of guide rail type wireless energy transmitting coils, wherein each segment of guide rail type wireless energy transmitting coil is arranged in parallel in the width direction to form a DD type energy transmitting coil structure, and the primary side signal coil is integrally arranged relative to the plurality of segments of guide rail type wireless energy transmitting coils to form a Q type primary side signal coil structure.
Preferably, the DD type energy transmitting coil structure is formed by connecting two rectangular coils in series, the two rectangular coils are arranged in parallel on the same plane, and the two rectangular coils have the same number of turns but opposite winding directions.
Preferably, the primary side signal coil is located above the multi-section guide rail type wireless energy transmitting coil.
Preferably, a magnetic core structure is laid below the multi-section guide rail type wireless energy transmitting coil.
Preferably, the Q-type primary signal coil structure is a rectangular coil, and the width of the Q-type primary signal coil structure is adapted to the width of the DD-type energy transmitting coil structure.
Preferably, the DD-type energy transmitting coil and the Q-type primary side signal coil are respectively formed by winding a litz wire in a planar close-wound manner, and a hollow area is formed by surrounding an innermost layer of coil.
The invention also provides a segmented guide rail type wireless energy transmission system with the signal coil, which comprises a transmitting end and a receiving end, wherein the transmitting end adopts the segmented guide rail type wireless energy transmitting mechanism with the signal coil, the receiving end comprises a secondary signal coil and a wireless energy receiving coil, the secondary signal coil is arranged in a Q-type secondary signal coil structure, and the wireless energy receiving coil is arranged in a DD-type energy receiving coil structure.
Preferably, the DD type energy receiving coil structure is formed by connecting two rectangular coils in series, the two rectangular coils are arranged in parallel on the same plane, and the two rectangular coils have the same number of turns but opposite winding directions.
Preferably, the Q-type secondary signal coil structure is a rectangular coil, and the length of the rectangular coil is shorter than that of the Q-type primary signal coil structure, but the widths of the Q-type secondary signal coil structure and the Q-type primary signal coil structure are adaptive.
Preferably, the length of the DD type energy receiving coil structure is shorter than the length of the DD type energy transmitting coil structure, but the widths of the two are adapted.
The invention provides a segmented guide rail type wireless energy transmitting mechanism with a signal coil and a transmission system, wherein a signal transmission channel (comprising a Q-shaped primary side signal coil structure and a Q-shaped secondary side signal coil structure) adopts a Q-shaped coil, an energy transmission channel (comprising a DD-shaped energy transmitting coil structure and a DD-shaped energy receiving coil structure) adopts a DD-shaped coil, and the DD-shaped coil and the Q-shaped coil can realize natural decoupling, so that the cross influence between energy transmission and signal transmission is small, and the parallel transmission of energy and signals is realized.
Drawings
Fig. 1 is a front view of a segmented rail-type wireless energy transmitting mechanism with a signal coil provided in embodiment 1 of the invention;
fig. 2 is a plan view of a DD type energy transmitting coil structure provided in embodiment 1 of the present invention;
fig. 3 is a top view of a Q-type primary side signal coil structure provided in embodiment 1 of the present invention;
fig. 4 is a front view of a segmented rail-type wireless energy transmission system with signal coils provided in embodiment 2 of the invention;
fig. 5 is a circuit topology diagram of a segmented rail-type wireless energy transmission system with signal coils according to embodiment 2 of the present invention;
fig. 6 is a spatial magnetic field distribution diagram of a system after only a DD type energy transmitting coil structure is energized with an exciting current in an experiment provided in embodiment 2 of the present invention;
fig. 7 is a spatial magnetic field distribution diagram of a system after only a Q-type primary-side signal coil structure is supplied with an excitation current in an experiment provided in embodiment 2 of the present invention;
fig. 8 is a spatial magnetic field distribution diagram of a system in which an excitation current is simultaneously applied to a DD-type energy-emitting coil structure and a Q-type primary-side signal coil structure in an experiment provided in embodiment 2 of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which are given solely for the purpose of illustration and are not to be construed as limitations of the invention, including the drawings which are incorporated herein by reference and for illustration only and are not to be construed as limitations of the invention, since many variations thereof are possible without departing from the spirit and scope of the invention.
In order to realize parallel transmission of energy and signals in a dynamic wireless charging system, the present embodiment first provides a segmented rail-type wireless energy transmitting mechanism with a signal coil (as shown in embodiment 1 below), and simultaneously provides a segmented rail-type wireless energy transmitting system with a signal coil (as shown in embodiment 2 below) applying embodiment 1.
Example 1
This embodiment 1 provides a segmented guide rail type wireless energy transmitting mechanism with signal coils, as shown in a front view of fig. 1, which includes a multi-segment guide rail type wireless energy transmitting coil (in this embodiment, 3 segments are taken as an example) and a primary side signal coil overlapped with the multi-segment guide rail type wireless energy transmitting coil, where each segment of guide rail type wireless energy transmitting coil is arranged in a DD type energy transmitting coil structure, and the primary side signal coil is arranged in parallel in a width direction with respect to the whole multi-segment guide rail type wireless energy transmitting coil to form a Q type primary side signal coil structure. And the primary side signal coil is positioned above the multi-section guide rail type wireless energy transmitting coil. And a magnetic core structure is laid below the multi-section guide rail type wireless energy transmitting coil.
As a preferred embodiment of this embodiment, as shown in the top view of fig. 2, the DD type energy transmitting coil structure is formed by connecting two rectangular coils in series, the two rectangular coils are arranged in parallel on the same plane, and the number of turns of the two rectangular coils is the same but the winding directions are opposite. As shown in the top view of fig. 3, the Q-type primary signal coil structure is a rectangular coil, and the width of the coil is adapted to the width of the DD-type energy transmitting coil structure.
The Q-type primary side signal coil structure and the DD-type energy transmitting coil structure are respectively formed by winding a litz wire in a planar close-wound mode, and a hollow area is formed by surrounding the innermost layer of coil and the innermost turn of coil.
In this embodiment, a DDQ type wireless energy transmitting mechanism composed of a DD type energy transmitting coil structure and a Q type primary side signal coil structure may be combined with a DDQ type wireless energy receiving mechanism to form a DDQ type segmented guide rail type wireless energy transmission system, so as to implement parallel transmission of signals and energy.
Example 2
The present embodiment 2 provides a segmented rail-type wireless energy transmission system with a signal coil, as shown in the front view of fig. 4, which includes a transmitting end and a receiving end, where the transmitting end is the segmented rail-type wireless energy transmitting mechanism with the signal coil described in embodiment 1, and the receiving end includes a secondary signal coil and a wireless energy receiving coil, the secondary signal coil is configured to be a Q-type secondary signal coil structure (the shape of which can refer to fig. 3), and the wireless energy receiving coil is configured to be a DD-type energy receiving coil structure (the shape of which can refer to fig. 2).
The DD type energy receiving coil structure is formed by connecting two rectangular coils in series, the two rectangular coils are arranged on the same plane in parallel, and the number of turns of the two rectangular coils is the same but the winding directions are opposite. The Q-type secondary side signal coil structure is a rectangular coil, the length of the Q-type secondary side signal coil structure is shorter than that of the Q-type primary side signal coil structure, and the width of the Q-type secondary side signal coil structure is adaptive to that of the Q-type primary side signal coil structure. The length of the DD type energy receiving coil structure is shorter than that of the DD type energy transmitting coil structure, but the widths of the DD type energy receiving coil structure and the DD type energy transmitting coil structure are adaptive.
For any number of sections of multi-section guide rail type wireless energy transmitting coils, the circuit topological diagram of the segmented guide rail type wireless energy transmission system with the signal coil of the embodiment is shown in the figure5, respectively. Wherein, in the equivalent circuit diagram of the energy loop, Lpi(i-1, 2, …, n) represents the section i guide rail type wireless energy transmitting coil, and the energizing voltage, resonance capacitance, equivalent internal resistance and current in the circuit are respectively Upi、Cpi、RpiAnd IpiRepresents; l issThe resonance capacitance, equivalent internal resistance and current in the circuit of the wireless energy receiving coil are respectively represented by Cs、RsAnd IsIs represented by RLRepresenting the load equivalent resistance, M1～MnRespectively showing the mutual inductance between each DD type energy transmitting coil structure and the wireless energy receiving coil thereof. In the equivalent circuit diagram of the signal loop, LpIndicating the primary side signal coil, the induced voltage, resonance capacitance, equivalent internal resistance and current in the circuit are respectively Ui、Cp、RpAnd IpRepresents; l issThe secondary signal coil has a resonance capacitance, an equivalent internal resistance, and a current represented by Cs、RsAnd IsIs represented by RLAnd M represents the mutual inductance between the primary side signal coil and the secondary side signal coil.
In this embodiment, a DDQ type energy signal transmitting structure composed of a DD type energy transmitting coil structure and a Q type primary side signal coil structure, and a DDQ type energy signal receiving structure composed of a DD type energy receiving coil structure and a Q type secondary side signal coil structure are adopted to form a DDQ type segmented guide rail type wireless energy transmission system, and parallel transmission of signals and energy is realized based on decoupling between the DD type coil and the Q type coil.
To illustrate the natural decoupling effect of the DD-type coil and the Q-type coil, the following experimental verification is performed in this embodiment.
When only the DD type energy transmitting coil structure is energized with the exciting current, the spatial magnetic field distribution can be observed as shown in fig. 6. At this time, the DD type energy receiving coil structure induces energy, and the mutual inductance is 104 uH. And the mutual inductance of the Q-type secondary side signal coil structure and the DD-type energy transmitting coil structure is only 0.003uH, which can be ignored. Therefore, no coupling exists between the DD type energy transmitting coil structure and the Q type secondary side signal coil structure.
Similarly, when only the Q-type primary signal coil structure is supplied with the exciting current, the spatial magnetic field distribution can be observed as shown in fig. 7. At this time, the Q-type secondary signal coil structure senses a signal, and the mutual inductance is 415 uH. And mutual inductance between the DD type energy receiving coil structure and the Q type primary side signal coil structure is only 0.001uH, which can be ignored. Therefore, no coupling exists between the Q-type primary signal coil structure and the DD-type energy receiving coil structure.
When the DD-type energy-emitting coil structure and the Q-type primary-side signal coil structure are simultaneously supplied with the exciting current, it can be observed that the spatial magnetic field distribution is as shown in fig. 8. At this time, the Q-type secondary signal coil structure senses a signal, and the mutual inductance is 415 uH. And the DD type energy receiving coil structure induces energy, and the mutual inductance is 104 uH. It can be seen that the energy channel and the signal channel are independent from each other, and no cross coupling exists, so that synchronous transmission of energy and signals can be realized.
In the embodiment, the energy coil and the signal coil are decoupled based on the DDQ coil structure form, and synchronous transmission of digital signals is realized on the basis of not influencing the stability of electric energy transmission power and the optimal efficiency. Signals are transmitted based on the magnetic coupling characteristic of the DD type coil structure, and the signals comprise position information, voltage and current information and the like, so that primary and secondary side communication interaction is realized. When the Q-type primary side signal coil structure receives position information from a secondary side, switching of a primary side energy supply guide rail is realized according to control algorithm design. Meanwhile, according to the voltage and current information fed back by the secondary side, the output power requirement and the tracking optimal efficiency are met through the phase-shifting control of the primary side inverter.
To sum up, the wireless energy transmission system of segmentation guide tracked of taking signal coil that this embodiment provided, its beneficial effect lies in:
1. the decoupling of the energy channel and the signal channel is realized based on the DDQ coil structure form, the power transmission is not influenced while the signal transmission is ensured, and the stability of the power transmission is ensured;
2. the synchronous transmission of energy signals is realized based on the DDQ coil structure, the advantages of high communication speed, low time delay and the like are achieved, and the DDQ coil structure is particularly suitable for a dynamic wireless charging system;
3. the real-time positioning of the secondary side can be realized based on the energy signal simultaneous transmission communication mode, the switching of the primary side guide rail and the tracking control of the optimal efficiency are facilitated, and the optimal energy efficiency is realized.
Finally, it should be noted that the above-mentioned "DD", "Q" and "DDQ" are merely a convenient memorial metaphor, and do not limit the specific shape of the coil.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The segmented guide rail type wireless energy transmitting mechanism with the signal coils is characterized by comprising a plurality of guide rail type wireless energy transmitting coils and a primary side signal coil overlapped with the guide rail type wireless energy transmitting coils, wherein each guide rail type wireless energy transmitting coil is parallelly arranged in the width direction to form a DD type energy transmitting coil structure, and the primary side signal coil is integrally arranged relative to the guide rail type wireless energy transmitting coils to form a Q type primary side signal coil structure.
2. The segmented rail-mounted wireless energy transmitting mechanism with signal coils as claimed in claim 1, wherein: the DD type energy transmitting coil structure is formed by connecting two rectangular coils in series, the two rectangular coils are arranged on the same plane in parallel, the number of turns of the two rectangular coils is the same, and the winding directions of the two rectangular coils are opposite.
3. The segmented rail-mounted wireless energy transmission mechanism with signal coils according to claim 1 or 2, characterized in that: the primary side signal coil is positioned above the multi-section guide rail type wireless energy transmitting coil.
4. The segmented rail-mounted wireless energy transmitting mechanism with signal coils as claimed in claim 3, wherein: and a magnetic core structure is laid below the multi-section guide rail type wireless energy transmitting coil.
5. The segmented rail-mounted wireless energy transmitting mechanism with signal coils according to claim 1 or 4, characterized in that: the Q-type primary side signal coil structure is a rectangular coil, and the width of the Q-type primary side signal coil structure is adaptive to that of the DD-type energy transmitting coil structure.
6. The segmented rail-mounted wireless energy transmitting mechanism with signal coils according to claim 5, wherein: the DD-type energy transmitting coil and the Q-type primary side signal coil are respectively formed by winding a litz wire in a planar close-wound mode, and a hollow area is formed by surrounding the innermost one turn of coil.
7. The utility model provides a take signal coil's wireless energy transmission system of segmentation guide tracked, includes transmitting terminal and receiving terminal, its characterized in that: the transmitting end adopts the segmented guide rail type wireless energy transmitting mechanism with the signal coil as claimed in any one of claims 1 to 6, the receiving end comprises a secondary signal coil and a wireless energy receiving coil, the secondary signal coil is in a Q-type secondary signal coil structure, and the wireless energy receiving coil is in a DD-type energy receiving coil structure.
8. The segmented rail-mounted wireless energy transfer system with signal coils of claim 7, wherein: the DD type energy receiving coil structure is formed by connecting two rectangular coils in series, the two rectangular coils are arranged on the same plane in parallel, the number of turns of the two rectangular coils is the same, and the winding directions of the two rectangular coils are opposite.
9. The segmented rail-mounted wireless energy transfer system with signal coils of claim 7, wherein: the Q-type secondary side signal coil structure is a rectangular coil, the length of the Q-type secondary side signal coil structure is shorter than that of the Q-type primary side signal coil structure, and the width of the Q-type secondary side signal coil structure is adaptive to that of the Q-type primary side signal coil structure.
10. The segmented rail-based wireless energy transfer system with signal coils as claimed in any one of claims 7 to 9, wherein: the DD type energy receiving coil structure is shorter than the DD type energy transmitting coil structure in length, but the widths of the DD type energy receiving coil structure and the DD type energy transmitting coil structure are adaptive.
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| CN202011329324.1A CN112467889A (en) | 2020-11-24 | 2020-11-24 | Segmented guide rail type wireless energy transmitting mechanism with signal coil and transmission system |
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| CN202011329324.1A CN112467889A (en) | 2020-11-24 | 2020-11-24 | Segmented guide rail type wireless energy transmitting mechanism with signal coil and transmission system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113472090A (en) * | 2021-07-29 | 2021-10-01 | 江苏方天电力技术有限公司 | Energy and signal are with passing mechanism and high-tension line monitoring facilities's wireless power supply system |
| CN113964957A (en) * | 2021-11-18 | 2022-01-21 | 重庆前卫无线电能传输研究院有限公司 | Sleeve type wireless energy signal transmission coupling mechanism and system |
| CN114243944A (en) * | 2021-11-03 | 2022-03-25 | 三峡大学 | Asymmetric T-DD type wireless power transmission magnetic coupling structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113472090A (en) * | 2021-07-29 | 2021-10-01 | 江苏方天电力技术有限公司 | Energy and signal are with passing mechanism and high-tension line monitoring facilities's wireless power supply system |
| CN114243944A (en) * | 2021-11-03 | 2022-03-25 | 三峡大学 | Asymmetric T-DD type wireless power transmission magnetic coupling structure |
| CN114243944B (en) * | 2021-11-03 | 2023-07-11 | 三峡大学 | Asymmetric T-DD wireless power transmission magnetic coupling structure |
| CN113964957A (en) * | 2021-11-18 | 2022-01-21 | 重庆前卫无线电能传输研究院有限公司 | Sleeve type wireless energy signal transmission coupling mechanism and system |
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Application publication date: 20210309 |