Multipath output semiconductor crown block vehicle-mounted non-contact power supply module
By using a multi-output semiconductor crane on-board non-contact power supply module, the problems of large size, heavy weight, and easy power failure in the control circuit of the existing technology have been solved, achieving stable power supply and efficient energy utilization, and avoiding production line paralysis.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING QIANWEI WIRELESS TECH CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-05-12
AI Technical Summary
In the existing technology, the non-contact power supply solution for semiconductor crane systems has problems such as large size and heavy weight, low energy utilization efficiency, and the control circuit being susceptible to main circuit failures that can lead to production line paralysis.
The semiconductor crane on-board non-contact power supply module with multiple outputs includes a ground control cabinet and track cables. It converts the three-phase power of the power frequency into a high-frequency current to excite the magnetic field. It uses a power take-off device and a voltage regulator and energy storage power supply to output two paths, 300V and 48V, to achieve isolation between power and control power.
It achieves stable power supply, reduces module size and weight, improves energy utilization efficiency, and prevents the entire production line from being paralyzed in the event of a main circuit failure.
Smart Images
Figure CN224233401U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power and control electrical isolation technology, specifically to a multi-output semiconductor crane on-board contactless power supply module. Background Technology
[0002] The semiconductor overhead crane system is the carrier for automated wafer handling and is required to operate without failure for 10 years under power-on conditions. If an alarm occurs, manual intervention is needed at the main control console to read the data reported by the crane control system and analyze the cause of the alarm. If it is a general alarm, manual intervention is required to issue a continue-operation command. In case of a malfunction, the crane must be moved off the production line within one minute. If the crane control system loses power and is then restored, it requires more than one minute of system self-checking and communication reconnection, causing a blockage throughout the production line. This necessitates that the power supply to the crane's onboard control circuit be kept constantly energized and cannot be interrupted.
[0003] The overhead crane's servo system requires 300V DC power, while the control system requires 48V DC power. The current technical solution involves a unified 300V DC power supply to the crane-end modules via a non-contact power supply system, with an additional branch inside the crane converting the 300V DC to 48V via a switching power supply to power the control system. To ensure uninterrupted power supply to the control system, a supercapacitor is typically added to the 300V output terminal to provide energy. This approach is simple to design for the non-contact power supply system, but it has limitations for the entire overhead crane system.
[0004] 1. A 300V to 48V switching power supply needs to be added inside the vehicle body, which is both large in size and heavy;
[0005] 2. The voltage limit of a single supercapacitor is only 4V, so to form a supercapacitor array with a voltage level of 300V would also result in a very large size and weight;
[0006] The 3,300V supercapacitor powers both the servo motor system and the control system. Only a small portion of the energy is allocated to the control system, and the energy conversion efficiency is too low after passing through the switching power supply.
[0007] 4. Since they share a single power supply system, if the main circuit fails, the control circuit will immediately lose power, causing the entire production line to shut down.
[0008] The operating speed and acceleration of the overhead crane system determine the production efficiency and capacity of the entire production line. The volume and weight of its internal modules determine the crane's maximum speed and acceleration. Therefore, reducing the weight of the overhead crane by optimizing the volume and weight of the contactless power supply system modules is an important way to improve the production efficiency of the wafer fab. Utility Model Content
[0009] This invention improves the traditional single-channel DC 300V output to a dual-channel output of 300V and 48V, achieving isolation between power and control circuits and ensuring stable power supply to the overhead crane system.
[0010] To solve the above problems, the technical solution adopted by this utility model is as follows: This utility model is a multi-output semiconductor crane on-board non-contact power supply module, including a fixed part, which includes a ground control cabinet PTC and a track cable PTU. The track cable PTU is electrically connected to the ground control cabinet PTC. The ground control cabinet PTC and the track cable PTU cooperate to convert the three-phase power of the power frequency into a high-frequency current with constant amplitude and excite a high-frequency magnetic field in the track cable. It also includes a moving part, which includes a power collector PPU and a voltage regulator PPC. The power collector PPU senses the high-frequency magnetic field of the track cable PTU and converts it into voltage. The voltage regulator PPC receives the voltage output by the power collector PPU and stabilizes the voltage output by the power collector PPU within the range required by the load. The voltage regulator PPC divides the power into two outputs: 300V and 48V.
[0011] Furthermore, the power supply unit (PPU) adopts an I-shaped design and uses single-wire partitioned winding to output two voltages.
[0012] Furthermore, the ground control cabinet PTC is equipped with a power distribution unit, and the power distribution power supply is a three-phase voltage input.
[0013] Furthermore, the ground control cabinet PTC is equipped with a rectifier unit, which is a full-bridge rectifier.
[0014] Furthermore, the ground control cabinet PTC is equipped with a power factor correction unit.
[0015] Furthermore, the ground control cabinet PTC is equipped with an inverter circuit, and a power transmitting coil is connected after the inverter circuit. The power transmitting coil sends the magnetic field signal to the power pickup unit PPU.
[0016] The beneficial effects of this utility model by adopting the above structure are as follows:
[0017] 1. The voltage-stabilized energy storage power supply (PPC) divides electrical energy into two outputs: 300V and 48V. It can operate on two voltages and is compact in size.
[0018] 2. It has high conversion efficiency, and even if the main circuit fails, it will not cause the entire production line to be paralyzed. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;
[0020] Figure 2This is a schematic diagram of the waveform changes proposed in this utility model;
[0021] Figure 3 This is a conventional design drawing of the power collector PPU proposed in this utility model.
[0022] Figure 4 This is a conventional design drawing of the power collector PPU proposed in this utility model. Detailed Implementation
[0023] As per the instruction manual Figures 1-2 As shown, this utility model is a multi-output semiconductor crane on-board non-contact power supply module, including a fixed part, also called a fixed end, which includes a ground control cabinet PTC and a track cable PTU. The track cable PTU is electrically connected to the ground control cabinet PTC. The ground control cabinet PTC and the track cable PTU work together to convert the three-phase power of the power frequency into a high-frequency current with a constant amplitude and to excite a high-frequency magnetic field in the track cable. It also includes a moving part, which includes a power collector PPU and a voltage regulator PPC. The power collector PPU senses the high-frequency magnetic field of the track cable PTU and converts it into voltage. The voltage regulator PPC receives the voltage output by the power collector PPU and stabilizes the voltage output by the power collector PPU within the range required by the load. The voltage regulator PPC divides the power into two outputs: 300V and 48V.
[0024] The power supply unit (PPU) adopts an I-shaped design and uses single-wire partitioned winding to output two voltages.
[0025] To reduce module size and weight while achieving higher power density requirements, power pickup units (PPUs) typically employ an I-shaped design, with their shape and magnetic field distribution as follows: Figure 3 As shown; Figure 3 The two positive squares in the middle are schematic diagrams of the cross-section of the track cable.
[0026] The original single-wire, full-range winding output of a single voltage has been changed to single-wire, partial-range winding output of two voltages; for example... Figure 4 , Figure 4 The right-hand winding output outputs 300V DC after voltage regulation and energy storage; the left-hand winding output outputs 48V DC after voltage regulation and energy storage.
[0027] The ground control cabinet PTC is equipped with a power distribution unit, and the power supply input is a three-phase voltage.
[0028] The ground control cabinet PTC is equipped with a rectifier unit, which is a full-bridge rectifier.
[0029] The ground control cabinet PTC is equipped with a power factor correction unit.
[0030] The ground control cabinet PTC is equipped with an inverter circuit, and a power transmitting coil is connected after the inverter circuit. The power transmitting coil sends the magnetic field signal to the power pickup unit PPU.
[0031] In practical use: the three-phase input voltage is rectified by a full-bridge rectifier, then power factor correction, and then voltage inverted and sent to the power transmitting coil. The transmitting magnetic field is received by the power coil, and the rectified output is 300V and 48V.
[0032] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A multi-output semiconductor overhead crane on-board contactless power supply module, characterized in that: The system includes a fixed component, comprising a ground control cabinet (PTC) and a track cable (PTU). The track cable PTU is electrically connected to the ground control cabinet (PTC). The ground control cabinet (PTC) and the track cable PTU work together to convert the three-phase power at industrial frequency into a high-frequency current with constant amplitude and to generate a high-frequency magnetic field within the track cable. The system also includes a mobile component, comprising a power collector (PPU) and a voltage regulator (PPC). The power collector (PPU) senses the high-frequency magnetic field of the track cable PTU and converts it into voltage. The voltage regulator (PPC) receives the voltage output from the power collector (PPU) and stabilizes the voltage output from the power collector (PPU) within the range required by the load. The voltage regulator (PPC) splits the electrical energy into two outputs: a 300V output and a 48V output.
2. The multi-output semiconductor crane on-board contactless power supply module according to claim 1, characterized in that: The power supply unit (PPU) adopts an I-shaped design and uses single-wire partitioned winding to output two voltages.
3. The multi-output semiconductor crane on-board contactless power supply module according to claim 1, characterized in that: The ground control cabinet PTC is equipped with a power distribution unit, which receives three-phase voltage.
4. A multi-output semiconductor crane on-board contactless power supply module according to claim 3, characterized in that: The ground control cabinet PTC is equipped with a rectifier unit, which is a full-bridge rectifier.
5. A multi-output semiconductor crane on-board contactless power supply module according to claim 4, characterized in that: The ground control cabinet PTC is equipped with a power factor correction unit.
6. A multi-output semiconductor crane on-board contactless power supply module according to claim 5, characterized in that: The ground control cabinet PTC is equipped with an inverter circuit, and a power transmitting coil is connected after the inverter circuit. The power transmitting coil sends the magnetic field signal to the power collector PPU.