CN217183042U - Wireless power supply device for rotating shaft - Google Patents
Wireless power supply device for rotating shaft Download PDFInfo
- Publication number
- CN217183042U CN217183042U CN202123276953.5U CN202123276953U CN217183042U CN 217183042 U CN217183042 U CN 217183042U CN 202123276953 U CN202123276953 U CN 202123276953U CN 217183042 U CN217183042 U CN 217183042U
- Authority
- CN
- China
- Prior art keywords
- power supply
- rotating shaft
- wireless power
- transmitting coil
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Near-Field Transmission Systems (AREA)
Abstract
The utility model discloses a rotation axis wireless power supply device for the electron device of setting on the rotation axis provides the power. The technical scheme is as follows: a disc (2) is arranged on the rotating shaft (1), and a plurality of receiving coils (3) are distributed on the end face of the disc (2); a transmitting coil (5) is arranged on the fixed support (4) close to the disc (2). High-frequency current is supplied to the transmitting coil (5), and output can be obtained on the corresponding receiving coil (3). The stable direct current voltage is output through the rectification and voltage stabilizing circuit.
Description
Technical Field
The utility model relates to the field of electronic technology, especially, relate to the wireless power supply unit who provides the power for the electronic equipment on the rotation axis.
Background
Some electronic devices require mounting on a rotating shaft and if batteries are not used, such electronic devices require specialized equipment to power them. The traditional power supply technology comprises slip ring power supply, rotary transformer power supply, high-frequency wireless power supply and the like. The slip ring device has the defects of complex installation, easy abrasion, no pollution resistance and easy poor contact; the rotary transformer has the disadvantages of complex installation and high cost.
The high-frequency wireless power supply uses a group of transmitting and receiving coils which are not in contact with each other, when high-frequency current is supplied to the transmitting coil, the current is generated in the receiving coil due to electromagnetic induction, and the receiving coil can be used as a power supply after proper treatment. This technique has the advantages of lower cost, long life and easier installation. However, in the conventional high-frequency wireless power supply device, the transmitting and receiving coils are sleeved on the rotating shaft, when the shaft is made of a metal material, the working efficiency is seriously reduced due to electromagnetic attenuation, and the transmitting coil is not easy to mount and adjust.
Disclosure of Invention
The utility model provides a rotation axis wireless power supply unit: a disc is arranged on the rotating shaft, the end face of the disc is perpendicular to the axis of the rotating shaft, the end face of the disc is made of nonmetal materials, and a plurality of receiving coils are distributed on the end face of the disc; positioning a transmitting coil at a fixed position adjacent to the disc; the transmitting coil is parallel and opposite to the plurality of receiving coils on the end face of the disk and is not contacted with each other.
High-frequency current is supplied to the transmitting coil, and output can be obtained on the corresponding receiving coil. The receiver coils are sequentially swept across the transmitter coil as the shaft rotates, the electromagnetic intensity of which varies constantly, so that the output of each receiver coil is unstable, and for this purpose, a rectifying and stabilizing circuit is provided to output a stabilized dc voltage.
In order to obtain a stable voltage output even when the rotary shaft is stationary, the area of the transmitting coil may be made larger than that of the receiving coil so that the number of the receiving coils opposed to the transmitting coil at any time is larger than 1.
The transmitting coil or the receiving coil can be wound by a lead wire with insulated outer surface such as a common enameled wire, a yarn-covered wire and the like, and can also be made by a printed circuit.
In order to further improve the efficiency, a magnetic conductive sheet can be arranged on the back of the transmitting coil or the receiving coil, so that the interference on other electrical appliances caused by the leakage of magnetic lines of force is also reduced.
The utility model provides a rotation axis wireless power supply device, because its electromagnetism major loop has avoided the rotation axis, can not cause the work efficiency to seriously descend because of metal material; the transmitting coil does not need to be sleeved on the rotating shaft, and the installation and the adjustment are very convenient.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a circuit block diagram of an embodiment of the present invention.
Detailed Description
The receiving coils 3 are distributed on the outer circular surface of a disk-shaped support 2, the support 2 is connected to the rotating shaft 1, and the rotating axis of the support 2 is coincident with the axis of the rotating shaft 1; a fixed non-rotating support 5 is arranged in the vicinity of the disc 2; the transmitting coil 4 is arranged on the bracket 5, and the transmitting coil 4 is opposite to the receiving coil 3 and is not contacted with each other.
Fig. 2 is a circuit block diagram of an embodiment of the present invention.
The transmitting part generates a high frequency current by an oscillator 10 to drive the transmitting coil 4.
The receiving section includes a plurality of groups, each of which includes a resonance circuit of the receiving coil 3 and the capacitor 6 and a rectifying circuit 7. The outputs of the groups are connected in parallel and then connected to a voltage stabilizing circuit 8, and the stabilized direct-current voltage output by the voltage stabilizing circuit supplies power to a load 9.
Claims (4)
1. A rotating shaft wireless power supply device, comprising: set up dish (2) on rotation axis (1), the terminal surface of dish (2) is mutually perpendicular with the axis of rotation axis (1), and its terminal surface material is nonmetal, along a plurality of receiving coil (3) of terminal surface distribution of dish (2), sets up transmitting coil (5) in the fixed position that is close to dish (2), its characterized in that: the transmitting coil (5) and the plurality of receiving coils (3) on the end face of the disc (2) are parallel and opposite and are not contacted with each other.
2. The wireless power supply apparatus for a rotating shaft according to claim 1, wherein: the number of receiving coils opposite to the transmitting coil at any time is more than 1.
3. The wireless power supply apparatus for a rotating shaft according to claim 1, wherein: the transmitting coil or the receiving coil is made of a printed circuit.
4. The wireless power supply apparatus for a rotating shaft according to claim 1, wherein: and the back of the transmitting coil or the receiving coil is provided with a magnetic conductive sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123276953.5U CN217183042U (en) | 2021-12-24 | 2021-12-24 | Wireless power supply device for rotating shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123276953.5U CN217183042U (en) | 2021-12-24 | 2021-12-24 | Wireless power supply device for rotating shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217183042U true CN217183042U (en) | 2022-08-12 |
Family
ID=82731133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123276953.5U Active CN217183042U (en) | 2021-12-24 | 2021-12-24 | Wireless power supply device for rotating shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217183042U (en) |
-
2021
- 2021-12-24 CN CN202123276953.5U patent/CN217183042U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW499788B (en) | Series motor with less electromagnetic interference | |
| CN103560632B (en) | A kind of brushless excitation mechanism based on electric energy wireless transmission | |
| EP3316448B1 (en) | Wireless power reception apparatus | |
| CN106026410B (en) | A kind of wireless electric energy transmission device | |
| CN217183042U (en) | Wireless power supply device for rotating shaft | |
| CN110635576A (en) | Rotary wireless energy transfer device for replacing electric excitation motor brush slip ring | |
| CN102946178B (en) | Self-powered device for supplying power for measuring sensor on rotary machine | |
| CN217642882U (en) | Radial wireless power supply device of rotation axis | |
| CN105226835A (en) | A kind of induction electric energy transmitting device for aeroengine rotor telemetry system | |
| CN207518356U (en) | Wireless power unit and wireless power supply | |
| CN208110826U (en) | Rotating platform and rotating radar platform | |
| CN210577963U (en) | Energy-saving control device of dynamic motor | |
| CN105656212B (en) | Contactless charging equipment based on rotating excitation field and charging method | |
| CN202503405U (en) | AC generator | |
| CN208285313U (en) | A kind of contactless energy and signal transmit slip ring | |
| EP2996220B1 (en) | Wireless power reception device | |
| CN105375651B (en) | A kind of long-life wireless electric energy transmission device between movable part rotary interface | |
| CN109088482B (en) | Plane parallel coil device suitable for wireless induction power supply of rotating shafts with different axes | |
| CN108305455A (en) | Rotating platform and rotating radar platform | |
| EP3961872A1 (en) | Brushless electric motor and electrical device | |
| CN111884355A (en) | Non-contact electric energy transmission device applied to CT system and CT system | |
| CN209046370U (en) | It is applicable in the plane-parallel type coil device of different diameter of axle shaft wireless induction power supplies | |
| CN202759356U (en) | AC generator | |
| CN105529986A (en) | Space driving mechanism based on wireless energy transmission of loosely coupled transformer | |
| WO2020039502A1 (en) | Power reception device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |