PDU power supply device and electrical equipment with same
By replacing the power management chip with transformer-free design and switch-off circuit boards, the problems of high cost, large footprint and difficult maintenance in traditional PDU devices are solved, and convenient fault repair and equipment expansion are achieved.
Patent Information
- Application Number
- CN202422624209.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-30
AI Technical Summary
In traditional PDU devices, transformers and power management chips lead to high costs, large space, high maintenance and difficult fault location.
It adopts a transformer-free design, uses a switch circuit board to replace the power management chip, and is equipped with relays, capacitors, contactors and other components to realize the computer's switch control and add safety protection circuits.
It reduces equipment costs and footprint, facilitates fault repair, and improves equipment expansion and safety.
Smart Images
Figure CN223245085U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the electrical field, in particular to a PDU power supply device and electrical equipment having the same. Background Art
[0002] A PDU (Power Distribution Unit) is designed to distribute power to cabinet-mounted electrical equipment. Available in a variety of specifications with varying functions, installation methods, and socket configurations, it provides suitable rack-mount power distribution solutions for diverse power supply environments. PDUs can make power distribution within a cabinet more organized, reliable, secure, professional, and aesthetically pleasing, while also making maintenance of the cabinet's power supply more convenient and reliable.
[0003] Typically, electrical equipment is powered by the power management chip and transformer of the PDU card: after the external 220V AC power is input, the transformer generates 24V AC power to provide standby power to the PDU card. When the electrical equipment is turned on, the power management chip controls the power pin on the computer motherboard of the electrical equipment to short-circuit instantly, and the computer starts up; after the computer is turned on, the power management chip monitors the emergency stop switch of the electrical equipment. If it detects that the emergency stop switch is closed, the power management chip controls the contactor to disconnect other power sources except the computer.
[0004] Traditional PDUs require transformers, which significantly increases the cost and footprint of the power supply system. The power management chip in the PDU card also limits the scalability of the device. Furthermore, the complex circuitry of the power management chip makes maintenance of the entire device difficult. When a fault occurs, it is difficult to locate the fault, and the PDU card often needs to be replaced to resolve the issue.
[0005] The disclosure of the above background technology content is only used to assist in understanding the concept and technical solution of this application. It does not necessarily belong to the prior art of this application, nor does it necessarily provide technical guidance. In the absence of clear evidence that the above content has been disclosed before the filing date of this application, the above background technology should not be used to evaluate the novelty and creativity of this application. Utility Model Content
[0006] The purpose of the utility model is to provide an improved PDU power supply device, remove the transformer in the original PDU which has high cost and space occupation, and replace the original power management chip in the PDU with a switch circuit board card to facilitate fault repair.
[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is as follows:
[0008] A PDU power supply device for providing power to a computer of an electrical device. The PDU power supply device does not include a power management chip and a transformer. The PDU power supply device includes a standby power supply, a power on / off board, a switch operating member connected to the power on / off board, a plurality of contactors, and a plurality of connection terminals for connecting the contactors to external loads.
[0009] The standby power supply provides a DC power supply for the switch board;
[0010] The switch board is configured with a relay, a capacitor, and a charging circuit and a discharging circuit thereof, wherein the coil of the relay is connected to the capacitor, the two contacts of the relay are configured to be connected to the power switch line of the computer, and the switch operating member is used to conduct the charging circuit or the discharging circuit of the capacitor to trigger the computer to start or shut down;
[0011] The coil of the contactor is configured to be connected to the DC power module of the computer, and the contacts of the contactor are arranged in a loop between the external AC power supply and the external load.
[0012] Furthermore, based on any one of the above technical solutions or a combination of multiple technical solutions, the PDU power supply device provided by the present utility model further includes an emergency stop switch configured to connect the coil of the contactor and the DC power module of the computer;
[0013] If the emergency stop switch is disconnected when the computer is powered on, the contactor cuts off the power supply circuit of the external load, and the computer remains powered on.
[0014] Further, based on any one of the aforementioned technical solutions or a combination of multiple technical solutions, each contactor is configured to be connected to one or more external loads through a wiring terminal.
[0015] Furthermore, based on any one of the aforementioned technical solutions or a combination of multiple technical solutions, there are multiple contactors, and the multiple contactors are connected to the external AC power supply through wiring terminals.
[0016] Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions described above, the PDU power supply device provided by the utility model also includes a leakage protector and a filter with a circuit breaker, and the external AC power supply, leakage protector, and filter are connected in sequence.
[0017] Furthermore, according to any one of the above technical solutions or a combination of multiple technical solutions, the filter is connected to the standby power supply and the contactor respectively through a terminal;
[0018] The standby power supply is an AC-DC conversion module.
[0019] Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions described above, the filter is connected to the surge protector and / or the computer display through a wiring terminal.
[0020] Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions described above, the PDU power supply device provided by the present invention also includes a knob switch, and the external AC power supply is connected to the leakage protector through the knob switch.
[0021] Furthermore, according to any one of the technical solutions or a combination of multiple technical solutions described above, the input side of each wiring terminal is connected to the air switch.
[0022] According to another aspect of the present invention, an electrical device is provided, including a computer, a load, and the PDU power supply device as described above.
[0023] Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions described above, the load is one or more of a motor controller, a vacuum pump, and a halogen lamp.
[0024] Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions described above, the electrical equipment is an AOI equipment or a SEMI scanning equipment.
[0025] The beneficial effects brought about by the technical solution provided by the utility model are as follows:
[0026] a. Remove the transformer from the original PDU, which is costly and takes up too much space. Replace the original power management chip with a power switch circuit card to facilitate troubleshooting.
[0027] b. Various safety protection circuit components are added to the PDU power supply device;
[0028] c. By setting up wiring terminals in the switch circuit board card, the expandability is greatly improved, making it convenient to add equipment such as inverters and three-phase pumps. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0030] Figure 1 A schematic diagram of an application circuit of a PDU power supply device provided as an exemplary embodiment of the present invention;
[0031] Figure 2A schematic diagram of a circuit structure for controlling capacitor charging or discharging provided by an exemplary embodiment of the present utility model. DETAILED DESCRIPTION
[0032] In order to help those skilled in the art better understand the solutions of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.
[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0034] In one embodiment of the present invention, a PDU power supply device is provided for providing power to a computer of an electrical device, such as Figure 1 As shown, the PDU power supply device is not provided with a power management chip and a transformer. The PDU power supply device includes a standby power supply, a switch board, a switch operating member connected to the switch board, a plurality of contactors and a plurality of connection terminals for connecting the contactors to external loads;
[0035] The standby power supply provides a DC power supply for the switch board;
[0036] The switch board is configured with a relay, a capacitor, and a charging circuit and a discharging circuit thereof, wherein the coil of the relay is connected to the capacitor, the two contacts of the relay are configured to be connected to the power switch line of the computer, and the switch operating member is used to conduct the charging circuit or the discharging circuit of the capacitor to trigger the computer to start or shut down;
[0037] The coil of the contactor is configured to be connected to the DC power module of the computer, and the contacts of the contactor are arranged in a loop between the external AC power supply and the external load.
[0038] The charging circuit and discharging circuit where the capacitor is located are as follows Figure 2 As shown, after the standby power supply provides 24V DC power to the switch board, the switch board enters the standby working state, and the switch operating member includes the following Figure 2 The power button SW1 and the power button SW2, that is, when the switch SW1 is closed, Figure 2 The charging power supply V0, resistor R1 and capacitor C form a charging circuit. The charging of the capacitor will generate a transient current, the coil of the relay will be energized, and then its two contacts will be attracted, which will drive the power switch line (Power SW) of the computer to be connected instantly, and the computer will start up. When the switch SW2 is closed, Figure 2 The capacitor C and resistor R2 form a discharge circuit. That is, the charge stored on the capacitor C moves in the discharge circuit to form a current. The coil of the relay is energized, and then its two contacts are attracted. That is, the power switch line (Power SW) of the computer is instantly connected, and the computer switches from the on state to the off state.
[0039] like Figure 1 As shown, the PDU power supply device provided by the present invention also includes an emergency stop switch configured to connect the coil of the contactor and the DC power supply module of the computer. The emergency stop switch is a normally closed self-locking switch connected in series with the 12Vdc circuit that controls the contactor to be attracted;
[0040] If the computer is turned on and an emergency occurs, the emergency stop switch is disconnected, the computer power supply stops, the contactor coil loses power and the contactor switch does not close, thereby cutting off the power supply circuit of the external load; and since the emergency stop switch does not affect the power on and off board, the computer is not affected and remains turned on. The operator can save important data and notify professional personnel to handle it.
[0041] The number of contactors can be one or more, and multiple contactors can be connected to more external loads. Figure 1 For example, in this embodiment, there are multiple contactors, which at least include contactor CN1 and contactor CN2, which are connected to the external AC power supply through the terminal TB2.
[0042] In this embodiment, various safety protection circuit components are added to the PDU power supply device: a 220V external AC power supply, a knob switch, a leakage protector with a circuit breaker, and a filter are connected in sequence. When the knob switch is turned on, the leakage protector with a circuit breaker is turned on, and the 220V AC power of the external AC power supply passes through the filter to the terminal TB1.
[0043] like Figure 1 , terminal block TB1 connects AC power to four circuits:
[0044] The first path is output to the standby power supply. The standby power supply is an AC-DC converter module that converts 220V AC power into 24V DC power to supply the power switch board.
[0045] The second path is output to the surge protector, which plays a role in lightning protection. When there is a transient high-voltage pulse in the power grid, the surge protector filters the high-voltage pulse to the ground line to protect the subsequent circuits;
[0046] The third path is output sequentially to circuit breaker CB1 (i.e., air switch, hereinafter referred to as circuit breaker) and terminal TB2, which is connected to contactor CN1 and contactor CN2 respectively. Contactor CN1 and contactor CN2 are configured to connect to one or more external loads through the terminals: the output of contactor CN1 is divided into a first branch between circuit breaker CB3 and terminal TB4, and a second branch between circuit breaker CB4 and terminal TB5. Similarly, the output of contactor CN2 is divided into a first branch between circuit breaker CB5 and terminal TB6, and a second branch between circuit breaker CB6 and terminal TB7. Terminals TB4, TB5, TB6, and TB7 can be connected to external loads serving as functional modules, such as motor controllers, vacuum pumps, LEDs, and complete DC power supplies.
[0047] The fourth channel is output to circuit breaker CB2 and terminal TB3 in sequence, and can then be connected to a computer monitor.
[0048] The above terminal blocks TB1-TB7 can use Phoenix terminal blocks to facilitate functional expansion, such as expanding the connection to single-phase vacuum pumps and inverters, three-phase vacuum pumps, modular LED controllers, 3DP / 3DH three-dimensional measurement sensors, QR code reader controllers, etc.
[0049] The PDU power supply device also includes a 24V power board, which is used to provide power to external boards, barcode readers, gratings and other electrical equipment.
[0050] In one embodiment of the present invention, an electrical device is provided, including a computer, a load and the PDU power supply device as described above, wherein the load is one or more of a motor controller, a vacuum pump, and a halogen lamp, and the electrical device is an AOI device or a SEMI scanning device.
[0051] This utility model uses a switch board to replace the original power management chip, which can locate the problem more quickly and facilitate maintenance in the event of a fault; furthermore, the transformer is eliminated, the floor space is reduced, and a large number of control cables can be saved. This utility model adopts a modular design and is more expandable.
[0052] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.
[0053] The above is only a specific implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.
Claims
1. A PDU power supply device for providing power to a computer of an electrical device, characterized in that: The PDU power supply device is not provided with a power management chip and a transformer. The PDU power supply device includes a standby power supply, a switch board, a switch operating member connected to the switch board, a plurality of contactors, and a plurality of connection terminals for connecting the contactors to external loads; The standby power supply provides a DC power supply for the switch board; The switch board is configured with a relay, a capacitor, and a charging circuit and a discharging circuit thereof, wherein the coil of the relay is connected to the capacitor, the two contacts of the relay are configured to be connected to the power switch line of the computer, and the switch operating member is used to conduct the charging circuit or the discharging circuit of the capacitor to trigger the computer to start or shut down; The coil of the contactor is configured to be connected to the DC power module of the computer, and the contacts of the contactor are arranged in a loop between an external AC power source and an external load.
2. The PDU power supply device according to claim 1, characterized in that: Also included is an emergency stop switch configured to connect the coil of the contactor to a DC power module of a computer; If the emergency stop switch is disconnected when the computer is powered on, the contactor cuts off the power supply circuit of the external load, and the computer remains powered on.
3. The PDU power supply device according to claim 1, characterized in that: Each contactor is configured to be connected to one or more external loads via a terminal block.
4. The PDU power supply device according to claim 1, characterized in that: There are multiple contactors, and the multiple contactors are connected to the external AC power supply through wiring terminals.
5. The PDU power supply device according to claim 1, characterized in that: It also includes a leakage protector and a filter with a circuit breaker, and the external AC power supply, the leakage protector and the filter are connected in sequence.
6. The PDU power supply device according to claim 5, characterized in that: The filter is connected to the standby power supply and the contactor respectively through a terminal; The standby power supply is an AC-DC conversion module.
7. The PDU power supply device according to claim 5, characterized in that: The filter is connected to the surge protector and / or the display of the computer through a connection terminal.
8. The PDU power supply device according to claim 5, characterized in that: It also includes a knob switch, and the external AC power supply is connected to the leakage protector through the knob switch.
9. The PDU power supply device according to any one of claims 1 to 4, characterized in that: The input side of each terminal block is connected to an air switch.
10. An electrical device, characterized in that: The device comprises a computer, a load and a PDU power supply device as claimed in any one of claims 1 to 9.
11. The electrical device according to claim 10, characterized in that The load is one or more of a motor controller, a vacuum pump, and a halogen lamp.
12. The electrical device according to claim 10, characterized in that The electrical equipment is AOI equipment or SEMI scanning equipment.