Display control device suitable for high-power direct-current power supply system

Abstract

The utility model discloses a display control device suitable for a high-power direct current power supply system, which is characterized by comprising a touch screen, a three-phase alternating current to 12V direct current isolation power supply, a three-phase alternating current to 24V direct current isolation power supply, a filter, a CAN (Controller Area Network) bus recorder and a CAN to IO (Input / Output) module, an external three-wire alternating current 380V is connected with the filter and is respectively connected with the input of the three-phase alternating current to 12V direct current isolation power supply and the input of the three-phase alternating current to 24V direct current isolation power supply after being filtered by the filter, and the output of the three-phase alternating current to 12V direct current isolation power supply is connected with the power supply interfaces of the touch screen, the CAN bus recorder and the CAN to IO module. And the output of the CAN-to-IO module is connected with the output of the three-phase AC-to-24V DC isolation power supply. The utility model has the advantages of simple scheme, timely control response, short interface display refresh cycle, low cost and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-power direct current power supply systems, and relates to a display and control device suitable for high-power direct current power supply systems. Background Art

[0002] With the promotion of the new energy industry in China, the types of equipment using DC power supply are also increasing. As a result, the power demand of DC power equipment is also changing, and the application of high-power application scenarios is also increasing, such as lasers, thermostats, mobile power stations, high-voltage charging piles, etc. The output power of high-power DC power supply systems is generally hundreds of kilowatts and megawatts. Due to the parameter limitations of semiconductor devices such as silicon tubes, the output power of a single power module is not large, generally kilowatts or tens of kilowatts. Therefore, high-power DC power supply systems generally use the characteristics of DC power to output multiple power modules in parallel. The output power of high-power DC power supply systems is getting higher and higher, and the safety of the system is becoming more and more important. The traditional control method generally uses controllers and display screens for control and display. Affected by the transmission speed between the controller and the display screen, there may be situations such as untimely human-computer interaction response, which may lead to operator misoperation. In addition, with the changes in the current chip supply demand, the procurement cost of high-performance controller chips has increased and the procurement cycle has become longer, resulting in great pressure on the supply chain. Therefore, a display control device is proposed, which does not require an additional controller and utilizes the internal control chip of the display screen in the display control device to achieve an integrated control and display design, improve real-time performance, reduce costs, reduce chip types and shorten supply cycles.

[0003] Traditional control devices that use a control panel and touch screen solution have the problems of slow communication between the control panel and the touch screen, untimely touch response, and unreal-time interface refresh, which may lead to the risk of misjudgment by the operator. In addition, this solution requires an additional control panel, which takes up the limited space of the power system and increases costs.

[0004] The storage memory inside the traditional control device is small or even non-existent, resulting in incomplete recorded data. When reading and writing the memory, due to the long read and write cycle of the memory, a large amount of processing time of the main control chip of the control board will be taken up, affecting the control response speed of the control board; the internal memory used is difficult to read and write data, and an unexpected power outage during the data saving process will cause data saving failure, or even damage the memory, resulting in the loss of key data when the power supply system fails and the input is accidentally powered off, and it is impossible to effectively reproduce the system working status before and after the failure. Utility Model Content

[0005] (I) Purpose of the utility model

[0006] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a display and control device suitable for a high-power DC power supply system with a simple solution, good real-time performance and high reliability.

[0007] (II) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a display and control device suitable for a high-power DC power supply system, which includes a touch screen, a three-phase AC to 12V DC isolated power supply, a three-phase AC to 24V DC isolated power supply, a filter, a CAN bus recorder, and a CAN to IO module; an external three-wire AC 380V is connected to the filter, which is filtered by the filter and connected to the inputs of the three-phase AC to 12V DC isolated power supply and the three-phase AC to 24V DC isolated power supply respectively, and the output of the three-phase AC to 12V DC isolated power supply is connected to the power supply interface of the touch screen, the CAN bus recorder, and the CAN to IO module; the output of the CAN to IO module is connected to the output of the three-phase AC to 24V DC isolated power supply.

[0009] The utility model also includes a shielding shell, a front panel of the shielding shell is provided with a connector, and the connector is connected to an external three-wire AC 380V.

[0010] Among them, a CAN bus is also included. The CAN bus connects the CAN interfaces of the touch screen, the CAN bus recorder, and the CAN to IO module, and then communicates with the external power module through a connector.

[0011] The input and output of the CAN-to-IO module are controlled through the connector and contactor on the front panel of the shielded chassis, the external power module, and the touch screen.

[0012] Among them, the three-phase AC to 12V DC isolated power supply, the three-phase AC to 24V DC isolated power supply, the filter, the CAN bus recorder, and the CAN to IO module are installed inside the shielded casing.

[0013] Wherein, the connector is connected with the touch screen, the filter, the CAN to IO module and the CAN bus recorder through cables.

[0014] Wherein, the shielding casing is fully sealed.

[0015] The touch screen is connected to the device in the casing through a touch screen connector on the front panel of the shielded casing, and a control program and a display program are designed inside the touch screen to directly perform human-computer interaction with an operator.

[0016] Wherein, the CAN bus recorder has a TF card interface.

[0017] Wherein, the CAN bus recorder is internally integrated with a lithium battery.

[0018] (III) Beneficial effects

[0019] The display and control device for a high-power DC power supply system provided by the above technical solution has the following beneficial effects:

[0020] (1) The display and control device uses a touch screen as the main controller. The control chip inside the touch screen adopts dual-core technology, one core is used for communication and algorithm control, and the other core is used for interface display and touch response. By using the touch screen, it is possible to control and communicate with devices such as power modules. The solution is simple, the control response is timely, the interface display refresh cycle is short, and the cost is low.

[0021] (2) The device is equipped with a CAN data storage recorder, which can record all data of the CAN bus in real time, facilitating the query of historical working status and troubleshooting;

[0022] (3) The CAN data storage recorder used in the device is equipped with a lithium battery. When the external input power supply is cut off, the internal storage will not be accidentally powered off while saving data, resulting in data loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the front panel of the shielding housing of the utility model;

[0024] Figure 2 It is a block diagram of the composition of the utility model. DETAILED DESCRIPTION

[0025] In order to make the purpose, content and advantages of the utility model clearer, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments.

[0026] like Figure 1 to Figure 2 As shown, the display and control device of this embodiment applicable to a high-power DC power supply system includes a shielded housing, a touch screen, a three-phase AC to 12V DC isolated power supply, a three-phase AC to 24V DC isolated power supply, a filter, a CAN bus recorder, and a CAN to IO module.

[0027] A three-phase AC to 12V DC isolated power supply, a three-phase AC to 24V DC isolated power supply, a filter, a CAN bus recorder, and a CAN to IO module are installed inside the shielded housing.

[0028] A connector is provided on the front panel of the shielded housing, which is connected to the touch screen, the filter, the CAN to IO module and the CAN bus recorder through cables.

[0029] The casing is fully sealed to improve the shielding function of the control device.

[0030] The display and control device is connected to the power module via a CAN connector and can be installed at the human-machine interface of a high-power DC power supply system for easy control; the display and control device is connected to devices such as contactors via input and output connectors.

[0031] The touch screen is connected to the device in the casing through a touch screen connector on the front panel of the shielding casing. The touch screen is designed with a control program and a display program inside, and directly performs human-computer interaction with an operator.

[0032] The CAN bus recorder has a TF card interface and can be installed with a large-capacity TF card. When there is data on the CAN bus, the recorder can record the CAN bus data in real time. The data is saved in a circular storage manner, that is, when the TF card capacity is insufficient, the content of the earliest time period in the TF card is automatically overwritten. The CAN bus recorder has an integrated lithium battery. During the data saving process, if the power supply is disconnected, the built-in lithium battery is used for power supply to prevent data loss and TF card damage.

[0033] The CAN to IO module can output control contactors and other devices or collect feedback contact states of contactors and other devices according to CAN instructions.

[0034] The touch screen, CAN bus recorder, CAN to IO module and power module interact with each other after forming a CAN network through the CAN bus.

[0035] The control device is connected to an external three-wire AC 380V through the connector on the front panel of the shielded casing, and is connected to the inputs of the three-phase AC to 12V DC isolated power supply and the three-phase AC to 24V DC isolated power supply after filtering. The output of the three-phase AC to 12V DC isolated power supply is connected to the power supply interface of the touch screen, CAN bus recorder, and CAN to IO module. The CAN interface of the touch screen, CAN bus recorder, and CAN to IO module is connected through the CAN bus, and then communicates with the external power supply module through the connector; the output of the CAN to IO module is connected to the output of the three-phase AC to 24V DC isolated power supply; the input and output of the CAN to IO module are controlled through the connector and contactor on the front panel of the shielded chassis.

[0036] The control principle of the display and control device of this embodiment is as follows:

[0037] The three-phase AC 380V input is connected to the filter through the power supply connector, and after filtering, it is connected to the three-phase AC to 12V power supply and the three-phase AC to 24V power supply respectively; the three-phase AC to 12V power supply and the three-phase AC to 24V power supply output DC 12V and DC 24V respectively; the CAN bus recorder and CAN to IO module start working after receiving DC 12V power supply, and the touch screen is connected through the touch screen connector on the front panel of the shielded case and starts working after receiving DC 12V power supply; the touch screen forms a CAN bus network with the CAN to IO module, CAN bus recorder, and power supply module through the touch screen connector on the front panel of the shielded case for data transmission; the touch screen serves as the main controller of the high-power DC power supply system, and the control chip inside the touch screen adopts dual-core technology, in which One core is used for communication and algorithm control, and the other core is used for interface display and touch response; the operator completes human-computer interaction through the touch screen interface, and the touch screen will generate corresponding touch instructions based on the operator's touch operation, and send the instructions to the power module and CAN to IO module through the CAN bus; the touch screen processes the data fed back by the power module and CAN to IO module and displays it in real time on the touch screen interface; the CAN bus recorder monitors the data of the CAN bus in real time and saves all the data in the TF card. When the operator needs to process the data or reproduce the fault, the TF card is taken out and connected to the PC. After copying the data of the corresponding time period to the working computer, the corresponding computer software (such as EXCEL, etc.) can be used for data processing or fault reproduction.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A display and control device suitable for a high-power DC power supply system, characterized in that: It includes a touch screen, a three-phase AC to 12V DC isolated power supply, a three-phase AC to 24V DC isolated power supply, a filter, a CAN bus recorder, and a CAN to IO module; an external three-wire AC 380V is connected to the filter, and after filtering by the filter, they are respectively connected to the inputs of the three-phase AC to 12V DC isolated power supply and the three-phase AC to 24V DC isolated power supply, and the output of the three-phase AC to 12V DC isolated power supply is connected to the power supply interface of the touch screen, the CAN bus recorder, and the CAN to IO module; the output of the CAN to IO module is connected to the output of the three-phase AC to 24V DC isolated power supply.

2. The display and control device suitable for a high-power DC power supply system as claimed in claim 1, characterized in that: The utility model also comprises a shielding shell. A connector is arranged on the front panel of the shielding shell. The connector is connected to an external three-wire AC 380V.

3. The display and control device for a high-power DC power supply system as claimed in claim 2, characterized in that: It also includes a CAN bus, which connects the touch screen, the CAN bus recorder, and the CAN interface of the CAN to IO module, and then communicates with the external power module through a connector.

4. The display and control device suitable for a high-power DC power supply system as claimed in claim 3, characterized in that: The input and output of the CAN to IO module are controlled through the connector and contactor on the front panel of the shielded chassis, the external power module, and the touch screen.

5. The display and control device for a high-power DC power supply system as claimed in claim 4, characterized in that: The three-phase AC to 12V DC isolated power supply, the three-phase AC to 24V DC isolated power supply, the filter, the CAN bus recorder, and the CAN to IO module are installed inside the shielded casing.

6. The display and control device suitable for a high-power DC power supply system as claimed in claim 5, characterized in that: The connector is connected to the touch screen, the filter, the CAN to IO module and the CAN bus recorder through cables.

7. The display and control device for a high-power DC power supply system as claimed in claim 6, characterized in that: The shielding casing is fully sealed.

8. The display and control device for a high-power DC power supply system as claimed in claim 7, characterized in that: The touch screen is connected to the device in the casing through a touch screen connector on the front panel of the shielding casing. The touch screen is designed with a control program and a display program inside, and directly performs human-computer interaction with an operator.

9. The display and control device for a high-power DC power supply system as claimed in claim 8, characterized in that: The CAN bus recorder is provided with a TF card interface.

10. The display and control device for a high-power DC power supply system as claimed in claim 9, characterized in that: The CAN bus recorder is internally integrated with a lithium battery.

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