Multipath output semiconductor crown block vehicle-mounted non-contact power supply module

Abstract

The invention discloses a multiplexed output semiconductor crown block vehicle-mounted non-contact power supply module which comprises a fixed part, the fixed part comprises 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 are matched to convert power frequency three-phase electricity into high-frequency current with constant amplitude, and the high-frequency current is connected with the ground control cabinet PTC. The high-frequency magnetic field is excited in the track cable, the moving part comprises a power-taking device PPU and a voltage-stabilizing energy-storing power supply PPC, the power-taking device PPU senses the high-frequency magnetic field of the track cable PTU and converts the high-frequency magnetic field into voltage, and the voltage-stabilizing energy-storing power supply PPC supplies power to the track cable PTU. The voltage stabilizing and energy storing power supply PPC receives voltage output by the electricity taking device PPU and stabilizes the voltage output by the electricity taking device PPU within a range required by a load, and the voltage stabilizing and energy storing power supply PPC divides electric energy into two paths of 300V output and 48V output. The invention relates to the technical field of power electricity and control electricity isolation, in particular to a multi-output semiconductor crown block vehicle-mounted non-contact power supply module.

Description

Technical Field

[0001] The present invention relates to the technical field of power electricity and control electricity isolation, and specifically refers to a multi-output semiconductor overhead crane vehicle-mounted non-contact power supply module. Background Art

[0002] The semiconductor overhead crane system is a carrier for wafer automated handling, and it is required to operate without failure for 10 years under powered conditions; in case of an overhead crane alarm, an operator needs to read the data reported by the overhead crane control system at the main console to analyze the alarm cause. If it is just a general alarm, the operator intervenes to issue a continue working instruction. In case of a fault, the overhead crane needs to be moved out of the production line within 1 minute; if the overhead crane control system is powered off and then powered on again, it needs to perform a system self-check and communication connection for more than 1 minute, causing blockage of the entire production line. This requires that the power supply of the overhead crane vehicle-mounted control circuit always remain powered on and cannot be powered off.

[0003] The servo system of the overhead crane requires 300V DC power supply, and the control system requires 48V DC power supply. The currently adopted technical solution is that the non-contact power supply system uniformly supplies 300V DC power to the vehicle-end module, and a branch is taken inside the overhead crane to convert 300V DC power into 48V through a switching power supply to supply power to the control system. To ensure that the control power is not powered off, generally a super capacitor is uniformly added at the 300V output end to provide energy for the control power. This mode is simple in design for the non-contact power supply system, but for the entire overhead crane system:

[0004] 1. An additional 300V to 48V switching power supply needs to be added inside the vehicle body, which is relatively large in both volume and weight;

[0005] 2. The voltage limit of a single super capacitor is only 4V, and the volume and weight of a super capacitor array with a 300V level will also be very large;

[0006] 3. The 300V super capacitor supplies energy to both the servo motor system and the control system simultaneously, and the energy allocated to the control system only accounts for a very small part. After conversion by the switching power supply, the energy utilization efficiency is too low;

[0007] 4. Since a common power supply system is shared, if a fault occurs in the main circuit, the control circuit will be powered off immediately, resulting in paralysis of the entire production line.

[0008] The running speed and acceleration of the overhead crane system determine the production efficiency and production capacity of the entire production line, and the volume and weight of its internal modules determine the ultimate speed and acceleration of the overhead crane. Therefore, optimizing the volume and weight of the non-contact power supply system module to reduce the weight of the overhead crane is an important way to improve the production efficiency of the wafer fab. Summary of the Invention

[0009] The present invention improves the traditional single - way DC 300V output to a dual - way output of 300V and 48V, realizes the isolation between power electricity and control electricity, and ensures the stable power supply of the overhead crane system.

[0010] To solve the above problems, the technical solution adopted by the present invention is as follows: The present invention is a multi - way output semiconductor non - contact power supply module for an overhead crane vehicle, including a fixed part. The fixed part 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 industrial frequency three - phase electricity into a high - frequency current with a constant amplitude and induce a high - frequency magnetic field in the track cable. It also includes a moving part. The moving part includes a current collector PPU and a regulated energy storage power supply PPC. The current collector PPU senses the high - frequency magnetic field of the track cable PTU and converts it into a voltage. The regulated energy storage power supply PPC receives the voltage output by the current collector PPU and stabilizes the voltage output by the current collector PPU within the range required by the load. The regulated energy storage power supply PPC divides the electric energy into two outputs: 300V output and 48V output.

[0011] Further, the current collector PPU adopts an I - shaped design and uses single - wire sectional winding to output two voltages.

[0012] Further, a power distribution unit is provided in the ground control cabinet PTC, and three - phase voltage is input to the power distribution unit.

[0013] Further, a rectification unit is provided in the ground control cabinet PTC, and the rectification unit is a full - bridge rectifier.

[0014] Further, a power factor correction unit is provided in the ground control cabinet PTC.

[0015] Further, an inverter circuit is provided in the ground control cabinet PTC. A power transmission coil is connected after the inverter circuit, and the power transmission coil sends the magnetic field signal to the current collector PPU.

[0016] The beneficial effects achieved by the present invention with the above structure are as follows:

[0017] 1. The regulated energy storage power supply PPC divides the electric energy into two outputs: 300V output and 48V output, providing two voltages and having a small volume.

[0018] 2. The conversion efficiency is high. Even if a main circuit failure occurs, it will not cause the entire production line to break down. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure proposed by the present invention;

[0020] Figure 2Schematic diagram of waveform change proposed by the present invention;

[0021] Figure 3 Conventional design drawing of the current collector PPU proposed by the present invention.

[0022] Figure 4 Conventional design drawing of the current collector PPU proposed by the present invention. Detailed implementation manners

[0023] As shown in the attached drawings of the specification Figures 1 to 2 The present invention is a multi-output semiconductor overhead crane vehicle-mounted non-contact power supply module, which includes a fixed part, also known as the fixed end. The fixed part 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 industrial frequency three-phase electricity into a high-frequency current with a constant amplitude and excite a high-frequency magnetic field in the track cable. It also includes a moving part, which includes a current collector PPU and a voltage-stabilizing energy storage power supply PPC. The current collector PPU senses the high-frequency magnetic field of the track cable PTU and converts it into a voltage. The voltage-stabilizing energy storage power supply PPC receives the voltage output by the current collector PPU and stabilizes the voltage output by the current collector PPU within the range required by the load. The voltage-stabilizing energy storage power supply PPC divides the electric energy into two outputs: 300V output and 48V output.

[0024] The current collector PPU adopts an I-shaped design and uses single-wire sectional winding to output two voltages.

[0025] In order to reduce the size and weight of the module and meet the requirements of higher power density, the current collector (PPU) generally adopts an I-shaped design, and its shape and magnetic field distribution are as Figure 3 shown; Figure 3 The two square blocks in the positive direction are schematic cross-sectional views of the track cable.

[0026] The original single-wire global winding to output a single voltage is changed to single-wire sectional winding to output two voltages; as Figure 4 , Figure 4 In the right part of the figure, the winding output is output as 300V DC after voltage stabilization and energy storage; the winding output in the left part is output as 48V DC after voltage stabilization and energy storage.

[0027] A power distribution unit is provided in the ground control cabinet PTC, and three-phase voltage is input to the power distribution power supply.

[0028] A rectification unit is provided in the ground control cabinet PTC, and the rectification unit is a full-bridge rectification.

[0029] A power factor correction unit is provided in the ground control cabinet PTC.

[0030] The ground control cabinet PTC is provided with an inverter circuit, and a power transmitting coil is connected after the inverter circuit. The power transmitting coil sends a magnetic field signal to the current collector PPU.

[0031] During specific use: The three-phase input voltage is rectified by a full-bridge rectifier, then undergoes power factor correction, and then the voltage is inverted and sent to the power transmitting coil. The emitted magnetic field is received by the power coil, and the rectified output is 300V and 48.

[0032] It should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and 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 non-contact power supply module for semiconductor overhead cranes on vehicles, characterized in that: It includes a fixed part, and the fixed part 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 industrial frequency three-phase electricity into high-frequency current with a constant amplitude and generate a high-frequency magnetic field in the track cable. It also includes a moving part, and the moving part includes a current collector PPU and a voltage-stabilizing energy storage power supply PPC. The current collector PPU senses the high-frequency magnetic field of the track cable PTU and converts it into voltage. The voltage-stabilizing energy storage power supply PPC receives the voltage output by the current collector PPU and stabilizes the voltage output by the current collector PPU within the range required by the load. The voltage-stabilizing energy storage power supply PPC divides the electric energy into two outputs: 300V output and 48V output.

2. The non-contact power supply module for an overhead crane vehicle with multiple outputs according to claim 1, wherein: The current collector PPU adopts an I-shaped design and uses single-wire sectional winding to output two voltages.

3. A non-contact power supply module for an overhead crane vehicle with multiple outputs according to claim 1, characterized in that: A power distribution unit is provided in the ground control cabinet PTC, and three-phase voltage is input to the power distribution power supply.

4. A multi-output semiconductor overhead crane vehicle non-contact power supply module according to claim 3, characterized in that: A rectification unit is provided in the ground control cabinet PTC, and the rectification unit is a full-bridge rectification.

5. The non-contact power supply module for an overhead crane vehicle with multiple outputs according to claim 4, characterized in that: A power factor correction unit is provided in the ground control cabinet PTC.

6. A multi-output semiconductor overhead crane vehicle non-contact power supply module according to claim 5, characterized in that: An inverter circuit is provided in the ground control cabinet PTC. A power transmission coil is connected after the inverter circuit, and the power transmission coil sends a magnetic field signal to the current collector PPU.

Images