Power supply heating system

Abstract

The invention provides a power supply heating system, and relates to the technical field of power supply safety control. The system comprises a power supply unit, a heating plate and an external control unit, the power supply unit is connected with the heating plate; the heating plate and the power supply unit are connected with the external control unit; the external control unit is used for monitoring the power supply temperature, comparing the power supply temperature with a preset temperature threshold value, and adjusting the working state of the heating plate to be on or off according to a comparison result. The temperature of the power supply is intelligently monitored through the external control unit, the working state of the heating plate is adjusted, direct-current bus fault tripping of the high-frequency power supply cabinet in a low-temperature environment is effectively prevented, the reliability and the stability of equipment are improved, and the downtime and the maintenance cost caused by fault tripping are reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of power supply safety control, and in particular to a power supply heating system. Background Art

[0002] In low temperature environments, the DC bus (DC-Link) of high-frequency power cabinets faces the risk of fault tripping. This fault tripping not only affects the normal operation of the equipment, but may also cause damage to the entire system, resulting in unnecessary downtime and maintenance costs. Therefore, it is particularly important to find an effective way to prevent fault tripping in such low temperature environments.

[0003] At present, most of the related technologies add thermal insulation measures to the equipment itself to solve the fault tripping problem of the high-frequency power cabinet in a low-temperature environment. However, the thermal insulation measures in the related technologies cannot provide enough heat to maintain the stable operation of the equipment in a low-temperature environment. Summary of the invention

[0004] The present disclosure provides a power supply heating system to solve the problems in the related art. By real-time monitoring of the power supply temperature and comparing it with a preset temperature threshold, the working state of the heating plate is intelligently adjusted, thereby improving the reliability and stability of the equipment and reducing the downtime and maintenance costs caused by fault tripping.

[0005] A first aspect embodiment of the present disclosure proposes a power supply heating system, which includes: a power supply unit, a heating plate and an external control unit; the power supply unit is connected to the heating plate, and the heating plate and the power supply unit are both connected to the external control unit; the external control unit is used to monitor the power supply temperature, compare the power supply temperature with a preset temperature threshold, and adjust the working state of the heating plate to on or off according to the comparison result.

[0006] In some embodiments, the power supply unit includes a rectifier transformer; a cooling liquid chamber is provided inside the rectifier transformer; and a heating plate is installed on the outer wall of the rectifier transformer or built into the cooling liquid chamber for heating the cooling liquid by heat conduction.

[0007] In some embodiments, a thermally conductive silicone sheet is disposed between the rectifier transformer and the heating plate.

[0008] In some embodiments, the surface of the heating plate is covered with an insulating layer for electrical isolation from the transformer oil during the heating process.

[0009] In some embodiments, the external control unit includes a temperature sensor, which is disposed inside the rectifier transformer or near the cooling liquid chamber, and is used to monitor the temperature information inside the rectifier transformer in real time, and use the temperature information as the power supply temperature.

[0010] In some embodiments, the external control unit further includes a temperature controller, which is used to receive the power supply temperature sent by the temperature sensor, and when the power supply temperature is greater than or equal to a preset temperature threshold, adjust the working state of the heating plate to on.

[0011] In some embodiments, the system further comprises an overheat protection device, which is connected to the heating plate and the rectifier transformer and is used to shut down the heating plate when it is detected that the temperature of the heating plate or the power supply is greater than or equal to a preset overheat temperature.

[0012] In some embodiments, the system further includes a remote monitoring module, which is communicatively connected to the temperature controller and is used to obtain the power supply temperature and the working status of the heating plate, and to display the power supply temperature and the working status.

[0013] In some embodiments, when the rectifier transformer is in low load or standby state, the temperature controller is used to adjust the heating plate to a low power consumption mode.

[0014] In some embodiments, the system also includes an early warning unit, which is respectively connected to the heating plate, the temperature sensor and the temperature controller, and is used to identify whether the working status of the heating plate and / or the temperature sensor and / or the temperature controller is abnormal. If the working status is abnormal, an early warning is pushed.

[0015] In summary, according to the power supply heating system provided by the present disclosure, the system includes: a power supply unit, a heating plate, and an external control unit; the power supply unit is connected to the heating plate, and the heating plate and the power supply unit are both connected to the external control unit; the external control unit is used to monitor the power supply temperature, compare the power supply temperature with the preset temperature threshold, and adjust the working state of the heating plate to on or off according to the comparison result. The power supply temperature is intelligently monitored and the working state of the heating plate is adjusted through the external control unit, which effectively prevents the DC bus fault tripping of the high-frequency power supply cabinet in a low temperature environment, improves the reliability and stability of the equipment, and reduces the downtime and maintenance costs caused by fault tripping.

[0016] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the description are used to explain the principles of the present disclosure, and do not constitute improper limitations on the present disclosure.

[0018] Figure 1 A schematic diagram of a power supply heating system provided for an application example of the present disclosure;

[0019] Figure 2A schematic flow chart of a power supply heating method provided for an application example of the present disclosure;

[0020] Figure 3 A schematic diagram of a power supply heating device provided for an application example of the present disclosure;

[0021] Figure 4 A schematic diagram of the composition of an electronic device provided for an application example of the present disclosure. DETAILED DESCRIPTION

[0022] Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0023] In low temperature environments, the DC-Link of high-frequency power cabinets faces the risk of fault tripping. This fault tripping not only affects the normal operation of the equipment, but may also cause damage to the entire system, resulting in unnecessary downtime and repair costs. Therefore, it is particularly important to find an effective way to prevent fault tripping in such low temperature environments.

[0024] At present, most of the related technologies solve the problem of DC bus fault tripping of high-frequency power cabinets in low temperature environments by adding insulation measures to the equipment itself. However, the insulation measures cannot provide enough heat to maintain the stable operation of the equipment in low temperature environments, affecting the performance and efficiency of the equipment.

[0025] In view of the problems of the above-mentioned related technologies, the power supply heating system disclosed in the present invention monitors the power supply temperature in real time and compares it with the preset temperature threshold, intelligently adjusts the working state of the heating plate, thereby effectively preventing the DC-Link fault tripping of the high-frequency power supply cabinet in a low-temperature environment. The system not only improves the reliability and stability of the equipment, but also reduces the downtime and maintenance costs caused by fault tripping. In addition, the system also has the advantages of simple structure, easy implementation and maintenance, etc., and provides an effective solution for the operation of high-frequency power supply cabinets in low-temperature environments.

[0026] A power heating system, method, device, electronic device and medium proposed in the present disclosure are described in detail below with reference to the accompanying drawings.

[0027] Figure 1 A schematic diagram of a power heating system provided by an embodiment of the present disclosure is shown in FIG. Figure 1 As shown, the system includes:

[0028] A power supply unit, a heating plate and an external control unit;

[0029] The power supply unit is connected to the heating plate, and both the heating plate and the power supply unit are connected to the external control unit;

[0030] The external control unit is used to monitor the power supply temperature, compare the power supply temperature with a preset temperature threshold, and adjust the working state of the heating plate to on or off according to the comparison result.

[0031] The power supply unit is directly connected to the heating plate to provide a stable power supply to ensure that the heating plate can work normally. The heating plate is used to generate heat when needed to increase the power supply temperature. The external control unit is used to monitor the temperature of the power supply unit and control the working state of the heating plate according to a preset temperature threshold. If the power supply temperature is less than the preset temperature threshold, the heating plate is turned on to increase the temperature; if the power supply temperature is greater than or equal to the preset temperature threshold, the heating plate is turned off to prevent overheating.

[0032] It is understandable that in the present disclosure, the initial working state of the heating plate is set to the off state, and at this time, the power supply temperature is tentatively within the normal range. The external control unit continuously monitors the power supply temperature, compares the monitored temperature with a preset temperature threshold, and if the power supply temperature is lower than the preset temperature threshold, the external control unit sends a corresponding control signal to the heating plate to start the heating plate to generate heat; if the power supply temperature is higher than or equal to the preset temperature threshold, the heating plate is kept off.

[0033] In some embodiments, the power supply unit includes a rectifier transformer; a cooling liquid chamber is provided inside the rectifier transformer; and a heating plate is installed on the outer wall of the rectifier transformer or built into the cooling liquid chamber for heating the cooling liquid by heat conduction.

[0034] The rectifier transformer is a key component in the power supply unit. It is responsible for converting the input AC power into DC power, or adjusting the voltage level to adapt to different power requirements. A cooling liquid chamber is set inside the rectifier transformer to effectively dissipate heat and prevent the transformer from being damaged due to overheating. The cooling liquid chamber is located inside the rectifier transformer and is used to contain the coolant. The coolant circulates when the transformer is working, absorbing and taking away the generated heat, thereby keeping the temperature of the transformer within a safe range. The coolant can be water, oil or other suitable heat transfer medium.

[0035] The heating plate can be installed on the outer wall of the rectifier transformer or as a component built into the coolant chamber to heat the coolant through heat conduction. When the power unit needs to be preheated or maintain a certain operating temperature, the heating plate will turn on and generate heat. This heat is transferred to the coolant through heat conduction, thereby heating the entire power unit.

[0036] Among them, the installation position of the heating plate is adjustable, and the position and number of the heating plates can be flexibly adjusted according to the specific structure and cooling requirements of the rectifier transformer to achieve the best heating effect and temperature distribution.

[0037] In some embodiments, a thermally conductive silicone sheet is disposed between the rectifier transformer and the heating plate.

[0038] A thermally conductive silicone sheet may be provided between the rectifier transformer and the heating plate. The thermally conductive silicone sheet is a highly efficient heat-conducting material that can transfer the heat generated by the heating plate to the rectifier transformer or the coolant in the coolant chamber more evenly. The present disclosure helps to improve the heat conduction efficiency by providing the thermally conductive silicone sheet, ensuring that the heat generated by the heating plate can be quickly and evenly distributed to the entire coolant chamber.

[0039] In some embodiments, the surface of the heating plate is covered with an insulating layer for electrical isolation from the transformer oil during the heating process.

[0040] The surface of the heating plate is covered with an insulating layer to achieve electrical isolation from the transformer oil (or other electrical media that may be present) during the heating process. The insulating layer can prevent the current from flowing directly into the transformer oil through the heating plate, thereby avoiding safety hazards such as electrical short circuits or fires. The insulating layer is usually made of high temperature and high voltage resistant insulating materials to ensure stable electrical isolation performance during the heating process.

[0041] In some embodiments, the external control unit includes a temperature sensor, which is disposed inside the rectifier transformer or near the cooling liquid chamber, and is used to monitor the temperature information inside the rectifier transformer in real time, and use the temperature information as the power supply temperature.

[0042] The temperature sensor in the present disclosure is arranged inside the rectifier transformer or in close proximity to the cooling liquid chamber, so that it can accurately capture the temperature information inside the rectifier transformer. The temperature sensor is responsible for real-time monitoring of the temperature inside the rectifier transformer and sending the temperature information as power supply temperature data to the temperature controller in the external control unit.

[0043] In some embodiments, the external control unit further includes a temperature controller, which is used to receive the power supply temperature sent by the temperature sensor, and when the power supply temperature is greater than or equal to a preset temperature threshold, adjust the working state of the heating plate to on.

[0044] The temperature controller in the present disclosure can receive power supply temperature data from the temperature sensor and compare it with a preset temperature threshold. According to the comparison result, the temperature controller will intelligently adjust the working state of the heating plate. If the power supply temperature is lower than the preset temperature threshold, the temperature controller will send a signal to turn on the heating plate to increase the temperature; if the power supply temperature is higher than or equal to the preset temperature threshold, it will send a signal to turn off the heating plate to prevent overheating.

[0045] In some embodiments, the system further comprises an overheat protection device, which is connected to the heating plate and the rectifier transformer and is used to shut down the heating plate when it is detected that the temperature of the heating plate or the power supply is greater than or equal to a preset overheat temperature.

[0046] The overheat protection device is the safety line of the system, which is closely connected with the heating plate and the rectifier transformer. When it is detected that the temperature of the heating plate or the power supply reaches or exceeds the preset overheat temperature, the overheat protection device will take immediate action to shut down the heating plate to prevent potential overheating damage or safety accidents.

[0047] In some embodiments, the system further includes a remote monitoring module, which is communicatively connected to the temperature controller and is used to obtain the power supply temperature and the working status of the heating plate, and to display the power supply temperature and the working status.

[0048] The remote monitoring module is connected to the temperature controller for real-time acquisition of the power supply temperature and the working status of the heating plate. The remote monitoring module also has a display function for displaying these key information on the user interface, so that operators can understand the operating status of the system at any time and perform necessary monitoring and management.

[0049] In some embodiments, when the rectifier transformer is in low load or standby state, the temperature controller is used to adjust the heating plate to a low power consumption mode.

[0050] The present disclosure can also utilize a temperature controller to adjust the heating plate to a low power consumption mode to reduce unnecessary energy consumption.

[0051] In some embodiments, the system also includes an early warning unit, which is respectively connected to the heating plate, the temperature sensor and the temperature controller, and is used to identify whether the working status of the heating plate and / or the temperature sensor and / or the temperature controller is abnormal. If the working status is abnormal, an early warning is pushed.

[0052] The early warning unit is closely connected with the heating plate, temperature sensor and temperature controller. The early warning unit can identify whether the working status of these components is abnormal. Once an abnormal state is detected, such as heating plate failure, temperature sensor failure or temperature controller abnormality, the early warning unit will immediately push an early warning and notify the operator to take timely measures to troubleshoot and repair.

[0053] In summary, the system intelligently monitors the power supply temperature and adjusts the working status of the heating plate through an external control unit, effectively preventing the DC bus fault tripping of the high-frequency power supply cabinet in a low temperature environment, improving the reliability and stability of the equipment, and reducing the downtime and maintenance costs caused by fault tripping. At the same time, the addition of remote monitoring modules and early warning units also greatly improves the reliability and safety of the system.

[0054] Figure 2 The following is a flow chart of a power supply heating method provided by an embodiment of the present disclosure. Figure 2 As shown, the method comprises the following steps:

[0055] Step 101: Obtain the power supply temperature.

[0056] In an embodiment of the present disclosure, the present disclosure can obtain temperature information of a finishing transformer in a power supply unit in real time through a temperature sensor in an external control unit, and send the temperature information as power supply temperature to a temperature controller in the external control unit.

[0057] Step 102: Compare the power supply temperature with a preset temperature threshold, and adjust the working state of the heating plate to on or off according to the comparison result to increase or decrease the battery temperature.

[0058] In the embodiment of the present disclosure, after receiving the power supply temperature sent by the temperature sensor, the temperature controller can compare the power supply temperature with the preset temperature threshold, and according to the comparison result, the temperature controller will intelligently adjust the working state of the heating plate. If the power supply temperature is lower than the preset temperature threshold, the temperature controller will send a signal to turn on the heating plate to increase the temperature; if the power supply temperature is higher than or equal to the preset temperature threshold, it will send a signal to turn off the heating plate to prevent overheating.

[0059] At the same time, the present disclosure can also display the power supply temperature and the working status of the heating plate in real time, so that the operator can understand the operating status of the system at any time and perform necessary monitoring and management.

[0060] In addition, the present disclosure can also monitor the power supply temperature and the temperature of the heating plate in real time. When the real-time monitored power supply temperature is greater than or equal to the first preset overheat temperature or the heating plate is greater than or equal to the second preset overheat temperature, the heating plate is turned off to prevent potential overheating damage or safety accidents. The first preset overheat temperature and the second preset overheat temperature can be the same or different, which is set according to actual needs and is not limited in the embodiments of the present disclosure.

[0061] The present disclosure can also determine in real time whether the working state of the heating plate and / or the temperature sensor and / or the temperature controller is abnormal. If the working state of any of the heating plate, the temperature sensor and the temperature controller is abnormal, an early warning can be pushed immediately. The early warning can be a pop-up window reminder in the user interface or a voice reminder, which is not limited in the embodiments of the present disclosure.

[0062] The early warning unit is closely connected with the heating plate, temperature sensor and temperature controller. The early warning unit can identify whether the working status of these components is abnormal. Once an abnormal state is detected, such as heating plate failure, temperature sensor failure or temperature controller abnormality, the early warning unit will immediately push an early warning and notify the operator to take timely measures to troubleshoot and repair.

[0063] It should be noted that when the rectifier transformer is in a low load or standby state, the present disclosure can also adjust the heating plate to a low power consumption mode to reduce energy loss.

[0064] In summary, the power supply heating method provided in the embodiment of the present invention obtains the power supply temperature, compares the power supply temperature with a preset temperature threshold, and adjusts the working state of the heating plate to on or off according to the comparison result to increase or decrease the battery temperature, thereby realizing intelligent monitoring of the power supply temperature and adjusting the working state of the heating plate, and effectively preventing the DC bus fault tripping of the power supply cabinet in a low temperature environment, thereby improving the reliability and stability of the equipment and reducing the downtime and maintenance costs caused by fault tripping.

[0065] In order to implement the power supply heating method provided in the embodiment of the present disclosure, the embodiment of the present disclosure also provides a power supply heating device, such as Figure 3 As shown, the power supply heating device 300 comprises:

[0066] An acquisition unit 310 is used to acquire a power supply temperature;

[0067] The control unit 320 is used to compare the power supply temperature with a preset temperature threshold, and adjust the working state of the heating plate to on or off according to the comparison result to increase or decrease the battery temperature.

[0068] Those skilled in the art should understand that Figure 3 The functions implemented by each unit in the power supply heating device 300 shown can be understood by referring to the relevant description of the aforementioned power supply heating method. Figure 3The functions of each unit in the power supply heating device 300 shown can be implemented by a program running on a processor, or can be implemented by a specific logic circuit. It should be noted that: the power supply heating device 300 provided in the above embodiment is only illustrated by the division of the above program units when performing power supply heating. In actual applications, the above processing can be assigned to different program units as needed, that is, the internal structure of the system can be divided into different program units to complete all or part of the processing described above. In addition, the power supply heating device 300 provided in the above embodiment and the power supply heating method embodiment belong to the same concept. The specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0069] Based on the hardware implementation of the program unit in the power heating device 400 of the present disclosure, and in order to implement the power heating method provided by the embodiment of the present disclosure, the present disclosure also provides an electronic device 400. Figure 4 As shown, Figure 4 A schematic diagram of the composition of an electronic device provided in an embodiment of the present disclosure, the electronic device 400 includes: a processor 401 and a memory 402, the memory 402 is used to store computer programs, the processor 401 is used to call and run the computer program stored in the memory 402, and execute the steps of the power heating method provided in the embodiment of the present disclosure.

[0070] In practical application, such as Figure 4 As shown, the various components in the electronic device 400 are coupled together through the bus module 403. It can be understood that the bus module 403 is used to realize the connection and communication between these components. In addition to the data bus, the bus module 403 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, Figure 4 Various buses are labeled as bus module 403.

[0071] The embodiment of the present disclosure also provides a non-transitory computer-readable storage medium storing computer instructions. When the computer instructions are executed by a computer, the steps of the power supply heating method provided by the embodiment of the present disclosure are implemented.

[0072] In some embodiments, the computer-readable storage medium may be a magnetic random access memory (FRAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a flash memory, a magnetic surface memory, an optical disk, or a compact disc read-only memory (CD-ROM) or other memory; it may also be various devices including one or any combination of the above memories.

[0073] In some embodiments, computer instructions may be in the form of programs, software, software modules, scripts or codes, written in any form of programming language (including compiled or interpreted languages, or declarative or procedural languages), and may be deployed in any form, including being deployed as independent programs or being deployed as modules, components, subroutines or other units suitable for use in a computing environment. As an example, computer instructions may, but not necessarily correspond to files in a file system, may be stored as part of a file storing other programs or data, for example, in one or more scripts stored in a Hypertext Markup Language (HTML) document, in a single file dedicated to the program in question, or in multiple collaborative files (e.g., files storing one or more modules, subroutines or code portions). As an example, computer instructions may be deployed to be executed on one computing device, or on multiple computing devices located at one location, or on multiple computing devices distributed at multiple locations and interconnected by a communication network.

[0074] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure 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 data used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0076] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0077] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, apparatus or device (such as a computer-based system, a system including a processing module, or other system that can fetch instructions from an instruction execution system, apparatus or device and execute instructions), or used in combination with these instruction execution systems, apparatuses or devices.

[0078] It should be understood that the various parts of the embodiments of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0079] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0080] In addition, each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium. The above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0081] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A power heating system, characterized in that: The system comprises: A power supply unit, a heating plate and an external control unit; The power supply unit is connected to the heating plate, and both the heating plate and the power supply unit are connected to the external control unit; The external control unit is used to monitor the power supply temperature, compare the power supply temperature with a preset temperature threshold, and adjust the working state of the heating plate to on or off according to the comparison result.

2. The method according to claim 1, characterized in that The power supply unit includes a rectifier transformer; A cooling liquid chamber is provided inside the rectifier transformer; The heating plate is installed on the outer wall of the rectifier transformer or built into the cooling liquid cavity, and is used for heating the cooling liquid through heat conduction.

3. The system according to claim 2, characterized in that A heat-conducting silicone sheet is arranged between the rectifier transformer and the heating plate.

4. The system according to claim 2, characterized in that The surface of the heating plate is covered with an insulating layer for electrically isolating the heating plate from the transformer oil during the heating process.

5. The system according to claim 2, characterized in that The external control unit includes a temperature sensor, which is arranged inside the rectifier transformer or near the cooling liquid chamber, and is used to monitor the temperature information inside the rectifier transformer in real time, and use the temperature information as the power supply temperature.

6. The system according to claim 5, characterized in that The external control unit further includes a temperature controller, which is used to receive the power supply temperature sent by the temperature sensor, and when the power supply temperature is greater than or equal to the preset temperature threshold, adjust the working state of the heating plate to be turned on.

7. The system according to claim 6, characterized in that The system further comprises an overheat protection device, which is connected to the heating plate and the rectifier transformer and is used to shut down the heating plate when it is detected that the temperature of the heating plate or the power supply is greater than or equal to a preset overheat temperature.

8. The system according to claim 6, characterized in that The system further comprises a remote monitoring module, which is communicatively connected with the temperature controller and is used for acquiring the power supply temperature and the working state of the heating plate, and displaying the power supply temperature and the working state.

9. The system according to claim 6, characterized in that When the rectifier transformer is in a low load or standby state, the temperature controller is used to adjust the heating plate to a low power consumption mode.

10. The system according to claim 6, characterized in that The system also includes an early warning unit, which is respectively connected to the heating plate, the temperature sensor and the temperature controller, and is used to identify whether the working status of the heating plate and / or the temperature sensor and / or the temperature controller is abnormal. If the working status is abnormal, an early warning is pushed.

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