Non-contact electric energy coupling device

Abstract

The invention discloses a non-contact electric energy coupling device which solves the problem that the radial size of an existing non-contact electric energy coupling device is difficult to further reduce. The non-contact electric energy coupling device comprises a sending end and a receiving end which can rotate relatively, the sending end comprises a sending magnetic ring and a sending conducting ring, the receiving end comprises a receiving magnetic ring and a receiving conducting ring, the sending magnetic ring and the receiving magnetic ring are oppositely arranged, and a rotating gap is axially formed between the sending magnetic ring and the receiving magnetic ring. The transmitting conducting ring and the receiving conducting ring are provided with a coupling gap in the radial direction and are at least partially overlapped in the axial direction, and the receiving conducting ring shields part of the rotating gap. According to the non-contact electric energy coupling device provided by the invention, the radial overlapping of the sending magnetic ring and the receiving magnetic ring is eliminated, so that the radial width of the non-contact electric energy coupling device is shortened, and the miniaturization requirement of the non-contact electric energy coupling device is met.

Description

Technical Field

[0001] The invention relates to the field of electric energy transmission, in particular to a contactless electric energy coupling device. Background Art

[0002] Realizing the transmission of power between relatively rotating shaft systems is a common difficulty in the industry. In the prior art, a non-contact power coupling transmission technology with a ring structure is usually used to realize dynamic energy transmission between rotating parts.

[0003] For example, the invention patent with publication number "CN115733260A" and name "A non-contact power supply and signal transmission device based on a dual-coil structure" provides a non-contact power supply and signal transmission device based on a dual-coil structure. However, due to the radial overlap between the inner and outer magnetic steels, the radial size of the non-contact power transmission device is difficult to reduce, making it difficult to meet the miniaturization requirements of the non-contact power coupling device. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and propose a non-contact power coupling device to solve the problem that the radial size of the existing non-contact power coupling device is difficult to further reduce.

[0005] In order to achieve the above technical objectives, the present invention proposes a contactless electric energy coupling device, including a transmitting end and a receiving end that can rotate relative to each other, the transmitting end includes a transmitting magnetic ring and a transmitting conductive ring, the receiving end includes a receiving magnetic ring and a receiving conductive ring, the transmitting magnetic ring and the receiving magnetic ring are arranged opposite to each other and a rotation gap is provided axially therebetween, the transmitting conductive ring and the receiving conductive ring are provided with a coupling gap in the radial direction and at least partially overlap in the axial direction, and the receiving conductive ring blocks part of the rotation gap.

[0006] Preferably, the sending magnetic ring is provided with a first receiving groove with an opening at one end, and the receiving magnetic ring is provided with a second receiving groove with an opening at one end, the openings of the first receiving groove and the second receiving groove are opposite to each other, the sending conductive ring is positioned in the first receiving groove, and the receiving conductive ring is positioned in the second receiving groove.

[0007] Preferably, part of the transmitting conductive ring extends into the second receiving groove through the rotating gap, and part of the receiving conductive ring extends into the first receiving groove through the rotating gap.

[0008] Preferably, the transmitting end further includes a first positioning ring, and the receiving end further includes a second positioning ring, the first positioning ring is received in the first receiving groove, the transmitting conductive ring is positioned on the first positioning ring, the second positioning ring is received in the second receiving groove, and the receiving conductive ring is positioned on the second positioning ring.

[0009] Preferably, the sending conductive ring includes a first pin, the receiving conductive ring includes a second pin, the first positioning ring is provided with a first pin groove, the second positioning ring is provided with a second pin groove, the sending magnetic ring is provided with a first pin notch, the receiving magnetic ring is provided with a second pin notch, the first pin passes through the first pin groove and the first pin notch and extends out of the sending end, and the second pin passes through the second pin groove and the second pin notch and extends out of the receiving end.

[0010] Preferably, the receiving conductive ring is arranged outside the transmitting conductive ring, and the first pin and the receiving conductive ring do not overlap in the axial direction. or, The transmitting conductive ring is arranged outside the receiving conductive ring, and the second pin and the transmitting conductive ring do not overlap in the axial direction.

[0011] Preferably, the transmitting end includes a first shell, the receiving end includes a second shell, the transmitting magnetic ring and the transmitting conductive ring are housed in the first shell, the receiving magnetic ring and the receiving conductive ring are housed in the second shell, a first flange is provided on the first shell, and a second flange is provided on the second shell.

[0012] Preferably, the transmitting conductive ring and the receiving conductive ring are copper rings.

[0013] Preferably, the transmitting magnetic ring and the receiving magnetic ring are made of soft magnets.

[0014] Preferably, the receiving conductive ring is arranged outside the sending conductive ring.

[0015] After adopting the above technical solution, the present invention has the following beneficial effects.

[0016] 1. A contactless electric energy coupling device proposed in the present invention comprises a transmitting end and a receiving end which can rotate relative to each other, wherein the transmitting end comprises a transmitting magnetic ring and a transmitting conductive ring, and the receiving end comprises a receiving magnetic ring and a receiving conductive ring, the transmitting magnetic ring and the receiving magnetic ring are arranged opposite to each other and a rotation gap is provided axially therebetween, the transmitting conductive ring and the receiving conductive ring are provided with a coupling gap in the radial direction and at least partially overlap in the axial direction, and the receiving conductive ring blocks part of the rotation gap. The transmitting magnetic ring and the receiving magnetic ring are arranged opposite to each other and a rotation gap is provided axially therebetween, thereby eliminating the radial overlap of the transmitting magnetic ring and the receiving magnetic ring and shortening the radial width of the non-contact electric energy coupling device. In addition, the transmitting conductive ring and the receiving conductive ring are partially overlapped in the axial direction and a coupling gap is provided in the radial direction, thereby realizing non-contact electric energy coupling between the transmitting end and the receiving end of the electric energy coupling device. Finally, since the receiving conductive ring blocks part of the rotation gap, the leakage of the high-frequency alternating magnetic field in the rotation gap is reduced, thereby improving the coupling efficiency of the non-contact electric energy coupling device. Through the above arrangement, the non-contact electric energy coupling device still has good coupling performance on the basis of reducing the radial size, meeting the need for miniaturization of the non-contact electric energy coupling device.

[0017] 2. Since the transmitting conductive ring is positioned in the first receiving groove and the receiving conductive ring is positioned in the second receiving groove, and the openings of the first receiving groove and the second receiving groove are opposite to each other, the transmitting conductive ring and the receiving conductive ring are placed in the center of the magnetic field of the transmitting magnetic ring and the receiving magnetic ring, so that the high-frequency alternating magnetic field of the part excited by the transmitting conductive ring is more easily gathered, and the receiving conductive ring can also induce more high-frequency alternating current. Such an arrangement can improve the coupling efficiency of the contactless power coupling device, thereby improving the power transmission efficiency of the contactless power coupling device and reducing the loss of power.

[0018] 3. Part of the transmitting conductive ring passes through the rotating gap and extends into the second receiving groove, and part of the receiving conductive ring passes through the rotating gap and extends into the first receiving groove. On the one hand, the high-frequency alternating magnetic field excited by the transmitting conductive ring is more and more easily gathered by the own magnetic field of the magnetic ring. On the other hand, the induction area of ​​the receiving conductive ring is increased, so that the receiving conductive ring can induce more high-frequency alternating current. Moreover, such an arrangement further increases the overlapping part between the transmitting conductive ring and the receiving conductive ring, thereby further increasing the induction effect of the receiving conductive ring. Finally, the arrangement of the receiving conductive ring passing through the rotating gap completely blocks the rotating gap on one side, thereby further reducing the leakage of the alternating magnetic field. Through the above arrangement, the coupling efficiency of the contactless power coupling device is improved, thereby improving the power transmission efficiency of the contactless power coupling device and reducing the loss of power.

[0019] 4. The transmitting end also includes a first positioning ring, and the receiving end also includes a second positioning ring. The first positioning ring is received in the first receiving groove, and the transmitting conductive ring is positioned on the first positioning ring. The second positioning ring is received in the second receiving groove, and the receiving conductive ring is positioned on the second positioning ring. This arrangement can, on the one hand, avoid the shaking of the conductive ring during the coupling process, and on the other hand, can also improve the installation positioning accuracy of the conductive ring and the coaxiality of the two conductive rings, thereby realizing high-efficiency power transmission of the contactless power coupling device.

[0020] 5. The transmitting conductive ring includes a first pin, the receiving conductive ring includes a second pin, the first positioning ring is provided with a first pin groove, the second positioning ring is provided with a second pin groove, the transmitting magnetic ring is provided with a first pin notch, the receiving magnetic ring is provided with a second pin notch, the first pin passes through the first pin groove and the first pin notch and extends out of the transmitting end, and the second pin passes through the second pin groove and the second pin notch and extends out of the receiving end. Such an arrangement facilitates the transmitting end and the receiving end to be electrically connected to the power supply and the power consumption device respectively, thereby improving the installation convenience of the contactless power coupling device.

[0021] 6. The receiving conductive ring is arranged outside the transmitting conductive ring, and the first pin and the receiving conductive ring do not overlap in the axial direction, or the transmitting conductive ring is arranged outside the receiving conductive ring, and the second pin and the transmitting conductive ring do not overlap in the axial direction. This arrangement avoids the interference of the pins with the rotation of the conductive ring, and the transmitting end and the receiving end can rotate freely, which broadens the application scenarios of the contactless power coupling device.

[0022] 7. The transmitting end includes a first shell, the receiving end includes a second shell, the transmitting magnetic ring and the transmitting conductive ring are housed in the first shell, the receiving magnetic ring and the receiving conductive ring are housed in the second shell, the first shell is provided with a first flange, and the second shell is provided with a second flange. With such a configuration, the shell is conducive to protecting the magnetic ring and the conductive ring, thereby reducing the possibility of damage to the non-contact power coupling device during use. Secondly, the flange provided on the shell is used to fix the transmitting end to the power supply and the receiving end to the power consumption device, so that the non-contact power coupling device can be more easily connected to the power supply and the power consumption device, simplifying the installation steps of the non-contact power coupling device and reducing the installation difficulty of the installer.

[0023] 8. The transmitting conductive ring and the receiving conductive ring are copper rings. Such a setting makes use of the high conductivity, good thermal conductivity and excellent processing performance of copper materials, so that the transmission efficiency of the non-contact power coupling device is higher and the heat generation is lower. At the same time, it also makes the processing of the conductive ring easier. In addition, the copper ring can be set to a thin-walled shape, that is, the copper ring is radially thin and axially wide, so as to further reduce the radial size occupied by the transmitting conductive ring and the receiving conductive ring, and further meet the needs of miniaturization of the non-contact power coupling device.

[0024] 9. The transmitting magnetic ring and the receiving magnetic ring are made of soft magnets. This arrangement makes use of the high magnetic permeability of soft magnets, which means that the magnetic rings can conduct magnetic lines of force more effectively, reduce magnetic resistance, and the magnetic field can be evenly distributed between the transmitting magnetic ring and the receiving magnetic ring, thereby significantly improving the coupling efficiency of the contactless power coupling device, thereby further improving the power transmission efficiency of the contactless power coupling device; at the same time, soft magnetic materials usually have a higher resistivity, which helps to reduce the eddy current loss generated in the high-frequency alternating magnetic field and reduce power loss; finally, soft magnetic materials also have good machinability and plasticity, making it easier to process soft magnetic materials into complex shapes, thereby reducing the processing cost of the magnetic rings.

[0025] 10. The receiving conductive ring is arranged outside the transmitting conductive ring. This arrangement can increase the area of ​​the receiving conductive ring, thereby increasing the induction area of ​​the induced alternating magnetic field, thereby improving the coupling efficiency of the contactless power coupling device, further increasing the transmission efficiency of the contactless power, and further reducing the loss of power.

[0026] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of a contactless power coupling device in an embodiment of the present invention; Figure 2 An exploded view of a contactless power coupling device according to an embodiment of the present invention; Figure 3 is a cross-sectional view of a contactless power coupling device according to an embodiment of the present invention; Reference numerals: 100, transmitting end, 110, transmitting magnetic ring, 111, first receiving groove, 112, first pin notch, 120, transmitting conductive ring, 121, first pin, 130, first positioning ring, 131, first pin groove, 140, first shell, 141, first flange; 200, receiving end, 210, receiving magnetic ring, 211, second receiving groove, 212, second pin notch, 220, receiving conductive ring, 221, second pin, 230, second positioning ring, 231, second pin groove, 240, second shell, 241, second flange; 300, rotation gap; 400. Coupling gap. DETAILED DESCRIPTION

[0028] The technical solutions of the embodiments of the present invention are explained and described below in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" and "several" mean two or more, unless otherwise clearly specified.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Embodiment 1: like Figures 1 to 3 As shown, a contactless power coupling device proposed in an embodiment of the present invention includes a transmitting end 100 and a receiving end 200 that can rotate relative to each other, the transmitting end 100 includes a transmitting magnetic ring 110 and a transmitting conductive ring 120, the receiving end 200 includes a receiving magnetic ring 210 and a receiving conductive ring 220, the transmitting magnetic ring 110 and the receiving magnetic ring 210 are arranged opposite to each other and a rotation gap 300 is axially provided therebetween, the transmitting conductive ring 120 and the receiving conductive ring 220 are provided with a coupling gap 400 in the radial direction and at least partially overlap in the axial direction, and the receiving conductive ring 220 blocks part of the rotation gap 300.

[0033] Among them, the receiving conductive ring 220 can be arranged on the inner side of the transmitting conductive ring 120, and the receiving conductive ring 220 blocks at least part of the rotating gap 300 on the inner side of the contactless power coupling device; the receiving conductive ring 220 can also be arranged on the outer side of the transmitting conductive ring 120, and the receiving conductive ring 220 blocks at least part of the rotating gap 300 on the outer side of the contactless power coupling device.

[0034] Working principle: A high-frequency alternating current is passed through the transmitting conductive ring 120, so that the transmitting conductive ring 120 generates a high-frequency alternating magnetic field, and the receiving conductive ring 220 induces high-frequency alternating current under the action of the high-frequency alternating magnetic field. A guiding magnetic field is generated between the transmitting magnetic ring 110 and the receiving magnetic ring 210, and the guiding magnetic field plays the role of gathering the high-frequency alternating magnetic field to reduce the leakage of the high-frequency alternating magnetic field.

[0035] The transmitting magnetic ring 110 and the receiving magnetic ring 210 are arranged opposite to each other and a rotating gap 300 is axially provided between the two, thereby eliminating the radial overlap of the transmitting magnetic ring 110 and the receiving magnetic ring 210, shortening the radial width of the non-contact power coupling device, and the transmitting conductive ring 120 and the receiving conductive ring 220 partially overlap in the axial direction and a coupling gap 400 is provided in the radial direction, thereby realizing non-contact power coupling between the transmitting end 100 and the receiving end 200 of the power coupling device. Finally, since the receiving conductive ring 220 blocks part of the rotating gap 300, the leakage of the high-frequency alternating magnetic field in the rotating gap 300 is reduced, thereby improving the coupling efficiency of the non-contact power coupling device. Through the above arrangement, the non-contact power coupling device still has good coupling performance on the basis of reducing the radial size, and the non-contact power coupling device has good power transmission efficiency, meeting the demand for miniaturization of the non-contact power coupling device.

[0036] In this embodiment, both the transmitting end 100 and the receiving end 200 are hollow, which makes it easy to rotatably sleeve the two on the shaft.

[0037] The axial direction refers to the direction in which the transmitting end 100 and the receiving end 200 are connected, and the radial direction is perpendicular to the axial direction.

[0038] In this preferred embodiment, the sending magnetic ring 110 is provided with a first receiving groove 111 with an opening at one end, and the receiving magnetic ring 210 is provided with a second receiving groove 211 with an opening at one end, the first receiving groove 111 and the second receiving groove 211 are opened relative to each other, the sending conductive ring 120 is positioned in the first receiving groove 111, and the receiving conductive ring 220 is positioned in the second receiving groove 211.

[0039] Since the transmitting conductive ring 120 is positioned in the first receiving groove 111, and the receiving conductive ring 220 is positioned in the second receiving groove 211, and the openings of the first receiving groove 111 and the second receiving groove 211 are opposite to each other, the transmitting conductive ring 120 and the receiving conductive ring 220 are placed in the center of the magnetic field of the transmitting magnetic ring 110 and the receiving magnetic ring 210, so that the high-frequency alternating magnetic field of the part excited by the transmitting conductive ring 120 is more easily gathered, and the receiving conductive ring 220 can also induce more high-frequency alternating current. Such an arrangement can improve the coupling efficiency of the contactless power coupling device, thereby improving the power transmission efficiency of the contactless power coupling device and reducing the loss of power.

[0040] More preferably, in this embodiment, part of the transmitting conductive ring 120 extends into the second receiving groove 211 through the rotating gap 300 , and part of the receiving conductive ring 220 extends into the first receiving groove 111 through the rotating gap 300 .

[0041] Part of the transmitting conductive ring 120 extends into the second receiving groove 211 through the rotating gap 300, and part of the receiving conductive ring 220 extends into the first receiving groove 111 through the rotating gap 300. On the one hand, the high-frequency alternating magnetic field excited by the transmitting conductive ring 120 is more and easier to be gathered by the inherent magnetic field of the magnetic ring. On the other hand, the induction area of ​​the receiving conductive ring 220 is increased, so that the receiving conductive ring 220 can induce more high-frequency alternating current. Moreover, such a configuration further increases the overlapping part between the transmitting conductive ring 120 and the receiving conductive ring 220, thereby further increasing the induction effect of the receiving conductive ring 220. Finally, the configuration of the receiving conductive ring 220 passing through the rotating gap 300 completely blocks the rotating gap 300 on one side, thereby further reducing the leakage of the alternating magnetic field. Through the above configuration, the coupling efficiency of the contactless power coupling device is improved, thereby improving the power transmission efficiency of the contactless power coupling device and reducing the loss of power.

[0042] In this embodiment, the transmitting conductive ring 120 and the receiving conductive ring 220 are copper rings. Such a configuration makes use of the high conductivity, good thermal conductivity and excellent processing performance of copper materials, so that the transmission efficiency of the contactless power coupling device is higher and the heat generation is lower, and the processing of the conductive ring is also easier, and the copper ring can be set to a thin-walled shape, that is, the copper ring is radially thin and axially wide, so that the radial size required to be occupied by the transmitting conductive ring 120 and the receiving conductive ring 220 can be further reduced, and the demand for miniaturization of the contactless power coupling device is further met.

[0043] The axial cross-section of the copper ring can be in an "I" shape or an "L" shape. It is understood that the bottom of the "L" shape must be placed in the receiving groove, which is beneficial to the gathering and induction of the high-frequency alternating magnetic field, and is also beneficial to the coupling of the transmitting end 100 and the receiving end 200 to avoid interference.

[0044] In some other embodiments, the transmitting conductive ring 120 and the receiving conductive ring 220 may also be coils, and the coils are wound on a ring-shaped substrate.

[0045] In this embodiment, the transmitting magnetic ring 110 and the receiving magnetic ring 210 are made of soft magnetic material. Such a configuration makes use of the high magnetic permeability of the soft magnetic material, which means that the magnetic ring can conduct magnetic lines of force more effectively, reduce magnetic resistance, and the magnetic field can be evenly distributed between the transmitting magnetic ring 110 and the receiving magnetic ring 210, thereby significantly improving the coupling efficiency of the contactless power coupling device, thereby further improving the power transmission efficiency of the contactless power coupling device; at the same time, soft magnetic materials usually have a high resistivity, which helps to reduce the eddy current loss generated in the high-frequency alternating magnetic field and reduce power loss; finally, soft magnetic materials also have good machinability and plasticity, making it easier to process soft magnetic materials into complex shapes, thereby reducing the processing cost of the magnetic ring.

[0046] In this embodiment, the receiving conductive ring 220 is preferably arranged outside the transmitting conductive ring 120. In this way, the area of ​​the receiving conductive ring 220 can be increased, thereby increasing the induction area of ​​the induced alternating magnetic field, thereby improving the coupling efficiency of the contactless power coupling device, further increasing the transmission efficiency of the contactless power, and further reducing the loss of power.

[0047] Embodiment 2: Based on the first embodiment, Figures 1 to 3 As shown, in this embodiment, the transmitting end 100 further includes a first positioning ring 130, and the receiving end 200 further includes a second positioning ring 230. The first positioning ring 130 is received in the first receiving groove 111, the transmitting conductive ring 120 is positioned on the first positioning ring 130, the second positioning ring 230 is received in the second receiving groove 211, and the receiving conductive ring 220 is positioned on the second positioning ring 230. The positioning ring and the magnetic ring are interference fit, and the conductive ring and the positioning ring are also interference fit. The positioning ring is embedded in the receiving groove of the magnetic ring, and the conductive ring is embedded on the positioning ring, so that the position between the conductive ring and the magnetic ring is relatively fixed.

[0048] Such arrangement, on the one hand, avoids the shaking of the conductive ring during the coupling process, and on the other hand, improves the installation positioning accuracy of the conductive ring and the coaxiality of the two conductive rings, thereby realizing efficient power transmission of the contactless power coupling device.

[0049] In some embodiments, the positioning ring is provided with an avoidance groove for avoiding the opposite conductive ring. Such a configuration can further increase the axial length of the receiving conductive ring 220 or the sending conductive ring 120, thereby further improving the coupling efficiency of the contactless power coupling device.

[0050] Preferably, in this embodiment, the sending conductive ring 120 includes a first pin 121, the receiving conductive ring 220 includes a second pin 221, the first positioning ring 130 is provided with a first pin groove 131, the second positioning ring 230 is provided with a second pin groove 231, the sending magnetic ring 110 is provided with a first pin notch 112, and the receiving magnetic ring 210 is provided with a second pin notch 212. The first pin 121 passes through the first pin groove 131 and the first pin notch 112 and extends out of the sending end 100, and the second pin 221 passes through the second pin groove 231 and the second pin notch 212 and extends out of the receiving end 200.

[0051] Such an arrangement facilitates the electrical connection between the transmitting end 100 and the receiving end 200 and the power supply and the power-consuming device respectively, thereby improving the installation convenience of the contactless power coupling device.

[0052] More preferably, in this embodiment, the receiving conductive ring 220 is arranged outside the transmitting conductive ring 120, and the first pin 121 does not overlap with the receiving conductive ring 220 in the axial direction, or the transmitting conductive ring 120 is arranged outside the receiving conductive ring 220, and the second pin 221 does not overlap with the transmitting conductive ring 120 in the axial direction.

[0053] Such a configuration avoids interference of the pins with the rotation of the conductive ring, and the transmitting end 100 and the receiving end 200 can rotate freely, thus broadening the application scenarios of the contactless power coupling device.

[0054] In some other embodiments, the pin may also axially pass through the positioning ring and the magnetic ring in a direction away from the conductive ring on the opposite side. In this way, on the one hand, the interference of the pin with the rotation of the transmitting end 100 and the receiving end 200 can be avoided. On the other hand, the conductive ring does not need to be limited in size to avoid the pin, thereby further improving the coupling efficiency of the contactless power coupling device.

[0055] Embodiment three: Based on the first and second embodiments, Figures 1 to 3 As shown, in this embodiment, the transmitting end 100 includes a first shell 140, the receiving end 200 includes a second shell 240, the transmitting magnetic ring 110 and the transmitting conductive ring 120 are accommodated in the first shell 140, the receiving magnetic ring 210 and the receiving conductive ring 220 are accommodated in the second shell 240, and a first flange 141 is provided on the first shell 140, and a second flange 241 is provided on the second shell 240.

[0056] With such arrangement, the shell is conducive to protecting the magnetic ring and the conductive ring, thereby reducing the possibility of damage to the contactless power coupling device during use. Secondly, the flange provided on the shell is used to fix the transmitting end 100 to the power supply and the receiving end 200 to the power consumption device, so that the contactless power coupling device can be more easily connected to the power supply and the power consumption device, simplifying the installation steps of the contactless power coupling device and reducing the installation difficulty of the installer.

[0057] In this embodiment, the first pin 121 passes through the first housing 140 and is connected to the power source, wherein the first pin 121 includes a first positive pin and a first negative pin, and the first positive pin and the first negative pin are respectively connected to the positive and negative electrodes of the power source. The second pin 221 passes through the second housing 240 and is connected to the electrical device, wherein the second pin 221 includes a second positive pin and a second negative pin, and the second positive pin and the second negative pin are respectively connected to the positive and negative electrodes of the electrical device.

[0058] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A non-contact power coupling device, characterized in that: It comprises a transmitting end and a receiving end which can rotate relative to each other, the transmitting end comprises a transmitting magnetic ring and a transmitting conductive ring, the receiving end comprises a receiving magnetic ring and a receiving conductive ring, the transmitting magnetic ring and the receiving magnetic ring are arranged opposite to each other and a rotation gap is provided axially therebetween, the transmitting conductive ring and the receiving conductive ring are provided with a coupling gap in the radial direction and at least partially overlap in the axial direction, and the receiving conductive ring blocks part of the rotation gap.

2. A non-contact power coupling device as claimed in claim 1, characterized in that: The sending magnetic ring is provided with a first receiving groove with an opening at one end, and the receiving magnetic ring is provided with a second receiving groove with an opening at one end, the first receiving groove and the second receiving groove are opened oppositely, the sending conductive ring is positioned in the first receiving groove, and the receiving conductive ring is positioned in the second receiving groove.

3. A non-contact power coupling device as claimed in claim 2, characterized in that: Part of the transmitting conductive ring extends into the second receiving groove through the rotating gap, and part of the receiving conductive ring extends into the first receiving groove through the rotating gap.

4. A non-contact power coupling device as claimed in claim 2, characterized in that: The transmitting end also includes a first positioning ring, and the receiving end also includes a second positioning ring. The first positioning ring is received in the first receiving groove, and the transmitting conductive ring is positioned on the first positioning ring. The second positioning ring is received in the second receiving groove, and the receiving conductive ring is positioned on the second positioning ring.

5. A non-contact power coupling device as claimed in claim 4, characterized in that: The transmitting conductive ring includes a first pin, the receiving conductive ring includes a second pin, the first positioning ring is provided with a first pin groove, the second positioning ring is provided with a second pin groove, the transmitting magnetic ring is provided with a first pin notch, the receiving magnetic ring is provided with a second pin notch, the first pin passes through the first pin groove and the first pin notch and extends out of the transmitting end, and the second pin passes through the second pin groove and the second pin notch and extends out of the receiving end.

6. A non-contact power coupling device as claimed in claim 5, characterized in that: The receiving conductive ring is arranged outside the transmitting conductive ring, and the first pin and the receiving conductive ring do not overlap in the axial direction, or, The transmitting conductive ring is arranged outside the receiving conductive ring, and the second pin and the transmitting conductive ring do not overlap in the axial direction.

7. A non-contact power coupling device as claimed in claim 1, characterized in that: The transmitting end includes a first shell, and the receiving end includes a second shell. The transmitting magnetic ring and the transmitting conductive ring are housed in the first shell, and the receiving magnetic ring and the receiving conductive ring are housed in the second shell. A first flange is provided on the first shell, and a second flange is provided on the second shell.

8. A non-contact power coupling device as claimed in claim 1, characterized in that: The transmitting conductive ring and the receiving conductive ring are copper rings.

9. A non-contact power coupling device as claimed in claim 1, characterized in that: The transmitting magnetic ring and the receiving magnetic ring are made of soft magnets.

10. A non-contact power coupling device as claimed in claim 1, characterized in that: The receiving conductive ring is arranged outside the sending conductive ring.

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