RGV multimode power supply system

Abstract

The utility model relates to the technical field of RGV rail cars, in particular to a multi-mode power supply system for RGVs, which is characterized by comprising a rail and a carrying trolley moving along the rail. A power supply device and a controller are arranged on the track, the power supply device comprises at least three power supply mechanisms with different power supply modes, and the power supply mechanisms are respectively connected with the controller; a driving device is arranged on the carrying trolley, the power supply device is connected with the driving device through a contactor, and the driving device is used for driving the carrying trolley. According to the multi-power-supply-mode RGV trolley, multiple power supply modes are integrated on the RGV trolley, the multi-power-supply-mode RGV trolley which has multiple power supply modes and can be freely switched is achieved, and the RGV trolley can adapt to different use scenes by switching the power supply modes.

Description

Technical Field

[0001] The utility model relates to the technical field of RGV rail vehicles, in particular to a multi-mode power supply system for an RGV vehicle. Background Art

[0002] Currently, the main power supply modes for RGV vehicles include battery power supply, low-voltage track power supply, cable reel power supply, tow cable power supply and busbar power supply.

[0003] Disadvantages of existing technologies: Battery power is not suitable for frequent use and requires regular charging and maintenance. Low-voltage rail power supply places high demands on track laying, requiring insulation. The cable drum trolley's platform is too high, impacting pedestrian and vehicle traffic within the cable dragging area. The cable power supply's operating range is limited, and the installation of busbars requires additional safety considerations. Existing RGV trolleys use a single power supply method, limiting their use cases.

[0004] In summary, there is an urgent need for a multi-mode power supply system for RGV vehicles to solve the problems existing in the existing technology. Utility Model Content

[0005] The purpose of this utility model is to provide a multi-mode power supply system for RGV vehicles. The specific technical solutions are as follows:

[0006] A multi-mode power supply system for an RGV vehicle includes a track and a transport vehicle moving along the track;

[0007] A power supply device and a controller are provided on the track, wherein the power supply device includes at least three power supply mechanisms with different power supply modes, and the power supply mechanisms are respectively connected to the controllers;

[0008] The transport trolley is provided with a driving device, the power supply device is connected to the driving device via a contactor, and the driving device is used to drive the transport trolley.

[0009] Preferably, the power supply device includes a busbar power supply mechanism, a wireless power supply mechanism and a battery power supply mechanism;

[0010] The busbar power supply mechanism is used to provide busbar power supply;

[0011] The wireless power supply mechanism is used to provide a wireless power supply method;

[0012] The battery power supply mechanism is used to provide a battery power supply mode.

[0013] Preferably, the busbar power supply mechanism includes a busbar power board, and the busbar power board is connected to the AC input end of the driving device through a contactor.

[0014] Preferably, the wireless power supply mechanism includes an electric control cabinet, a transmission line, a compensation box, a power supply and a converter. The electric control cabinet and the compensation box are arranged on the transmission line. The transmission line, the power supply and the converter are connected in sequence. The converter outputs DC and is connected to the DC input terminal of the driving device through a contactor.

[0015] Preferably, the battery power supply mechanism includes a charging pile and a charging brush plate, and the charging brush plate is arranged on the transport vehicle and connected to the vehicle power supply through a cable.

[0016] Preferably, the driving device includes a driver and a motor, the driver includes a rectifier unit, a DC bus and an inverter unit, the rectifier unit and the DC bus are both connected to the motor through the inverter unit, the rectifier unit is the AC input end of the driving device, and the DC bus is the DC input end of the driving device.

[0017] Preferably, a supercapacitor is connected to the DC bus.

[0018] Preferably, the transport trolley is provided with an area detection sensor, an obstacle avoidance radar, an in-position travel switch and a deceleration proximity switch.

[0019] The application of the technical solution of the utility model has the following beneficial effects:

[0020] The utility model integrates three different power supply systems on the RGV trolley to provide stable power supply to the RGV trolley. The three different power supply systems can be switched freely. The RGV trolley can switch different power supply methods according to the usage scenario, and has wider applicability.

[0021] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 This is a structural diagram of the multi-mode power supply system of the RGV trolley in the preferred embodiment of the present utility model;

[0024] Figure 2 This is a structural block diagram of the multi-mode power supply system of the RGV trolley in the preferred embodiment of the present utility model;

[0025] Figure 3 This is a structural block diagram of the wireless power supply mechanism in the preferred embodiment of the present utility model;

[0026] Figure 4 It is a structural block diagram of the battery power supply mechanism in the preferred embodiment of the present utility model.

[0027] Among them, 1-track, 2-controller, 3-trolley line power supply mechanism, 4-wireless power supply mechanism, 5-battery power supply mechanism. DETAILED DESCRIPTION

[0028] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0029] Example:

[0030] See also Figure 1 and Figure 2 , this embodiment discloses a multi-mode power supply system for an RGV vehicle, comprising a track 1 and a transport vehicle moving along the track;

[0031] The track 1 is provided with a power supply device and a controller 2, wherein the power supply device includes at least three power supply mechanisms with different power supply modes, and the power supply mechanisms are respectively connected to the controllers;

[0032] The transport trolley is provided with a driving device, the power supply device is connected to the driving device via a contactor, and the driving device is used to drive the transport trolley.

[0033] It should be noted that Figure 2 KM1, KM2, and KM3 represent three contactors. Multiple power supply mechanisms in the power supply device are connected and disconnected with the carrier vehicle through the contactors. The controller can control the contactors to switch the power supply mode.

[0034] Specifically, the power supply device includes a busbar power supply mechanism 3, a wireless power supply mechanism 4 and a battery power supply mechanism 5;

[0035] The busbar power supply mechanism 3 is used to provide busbar power supply;

[0036] The wireless power supply mechanism 4 is used to provide a wireless power supply method;

[0037] The battery power supply mechanism 5 is used to provide a battery power supply mode.

[0038] In a specific implementation case, the busbar power supply mechanism 3 includes a busbar power board, which is connected to the AC input terminal of the drive device through a contactor. It should be noted that the track in this embodiment is provided with multiple brackets along the track direction, and the busbar power board is provided on the brackets.

[0039] In a specific implementation case, such as Figure 3 As shown, the wireless power supply mechanism 4 includes an electric control cabinet, a transmission line, a compensation box, a power supply and a converter. The electric control cabinet and the compensation box are arranged on the transmission line. The transmission line, the power supply and the converter are connected in sequence. The converter outputs DC and is connected to the DC input end of the driving device through a contactor.

[0040] It should be noted that the electric control cabinet, transmission line, and compensation box constitute the primary side responsible for transmitting electric energy, and the power take-off and converter constitute the secondary side responsible for receiving electric energy. Wireless power transmission is achieved between the primary and secondary sides through electromagnetic coupling.

[0041] Furthermore, the power supply of the wireless power supply mechanism in this embodiment selects a three-phase 380V power supply, which is connected to an electric control cabinet. The electric control cabinet converts power and applies the input three-phase AC power to the transmission line after rectification and inversion.

[0042] The principle of wireless power supply in this embodiment is as follows: multiple compensation boxes are provided on the transmitting line, and the transmitting line and the compensation boxes form a partial resonant compensation network on the primary side, so that the primary side resonates at a fixed frequency; the secondary side uses the electrical device to perform electromagnetic field induction, pick up electrical energy, and output it to the converter after resonance compensation for electrical energy conversion such as rectification and voltage regulation. The output DC is connected to the drive device through a contactor.

[0043] In a specific implementation case, such as Figure 4 As shown, the battery power supply mechanism 5 includes a charging pile and a charging brush plate. The charging brush plate is installed on the transport cart and connected to the on-board power supply via a cable. Furthermore, the charging brush plate is installed on the transport cart via a telescopic mechanism. When the transport cart is positioned at the charging pile, the transport cart opens the relay between the on-board power supply and the charging brush plate, and according to the 485 communication command, the telescopic mechanism is extended. The charging pile is attached to the charging brush plate, and the battery voltage is detected and automatically charged according to the CAN communication command (CAN communication is used between the battery and the charging station). After charging is completed, no voltage is detected, and the telescopic mechanism retracts.

[0044] In a specific implementation case, the driving device includes a driver and a motor, the driver includes a rectifier unit, a DC bus and an inverter unit, the rectifier unit and the DC bus are both connected to the motor through the inverter unit, the rectifier unit is the AC input end of the driving device, and the DC bus is the DC input end of the driving device.

[0045] In a more specific implementation case, the motor is a three-phase AC asynchronous motor, which has low cost and stable performance.

[0046] Furthermore, a supercapacitor is connected to the DC bus. In the above multiple implementation cases, the gaps between switching power supply modes can be powered by the supercapacitor on the DC bus, ensuring that the transport vehicle has uninterrupted power throughout the entire process.

[0047] In a specific implementation case, the transport trolley is provided with an area detection sensor, an obstacle avoidance radar, an in-position limit switch and a deceleration proximity switch. The area detection sensor is used to detect the position of the transport trolley, and the controller can automatically switch the corresponding power supply mode according to the position of the transport trolley; the obstacle avoidance radar is a laser radar; the in-position limit switch is used to determine whether the transport trolley has stopped in place, thereby ensuring that the corresponding power supply mechanism can provide power supply; the deceleration proximity switch is used to control the transport trolley to stop in place.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A multi-mode power supply system for RGV vehicles, characterized in that: It includes a track and a carrying trolley moving along the track; A power supply device and a controller are provided on the track, wherein the power supply device includes at least three power supply mechanisms with different power supply modes, and the power supply mechanisms are respectively connected to the controllers; The transport trolley is provided with a driving device, the power supply device is connected to the driving device via a contactor, and the driving device is used to drive the transport trolley.

2. The RGV vehicle multi-mode power supply system according to claim 1 is characterized in that: The power supply device includes a busbar power supply mechanism, a wireless power supply mechanism and a battery power supply mechanism; The busbar power supply mechanism is used to provide busbar power supply; The wireless power supply mechanism is used to provide a wireless power supply method; The battery power supply mechanism is used to provide a battery power supply mode.

3. The RGV multi-mode power supply system according to claim 2 is characterized in that: The busbar power supply mechanism includes a busbar power board, and the busbar power board is connected to the AC input end of the driving device through a contactor.

4. The RGV multi-mode power supply system according to claim 2 is characterized in that: The wireless power supply mechanism includes an electric control cabinet, a transmission line, a compensation box, a power supply and a converter. The electric control cabinet and the compensation box are arranged on the transmission line. The transmission line, the power supply and the converter are connected in sequence. The converter outputs direct current and is connected to the DC input end of the driving device through a contactor.

5. The RGV vehicle multi-mode power supply system according to claim 4 is characterized in that: The battery power supply mechanism includes a charging pile and a charging brush plate. The charging brush plate is arranged on the transport vehicle and connected to the vehicle power supply through a cable.

6. The RGV multi-mode power supply system according to claim 1 is characterized in that: The drive device includes a driver and a motor. The driver includes a rectifier unit, a DC bus and an inverter unit. The rectifier unit and the DC bus are both connected to the motor through the inverter unit. The rectifier unit is the AC input end of the drive device, and the DC bus is the DC input end of the drive device.

7. The RGV multi-mode power supply system according to claim 6 is characterized in that: The DC bus is connected with a super capacitor.

8. The RGV multi-mode power supply system according to claim 1 is characterized in that: The transport trolley is provided with an area detection sensor, an obstacle avoidance radar, an in-position travel switch and a deceleration proximity switch.

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