Temperature control system of power converter
By designing a temperature control system for power converters, using the combined control of air-cooled and liquid-cooled modules, the problem of frequent start of electronic water pumps in liquid-cooled systems is solved, and the effect of extending the life of electronic water pumps is achieved.
Patent Information
- Application Number
- CN202421750264.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-23
AI Technical Summary
In power converters that coexist with air-cooling and liquid-cooling, electronic water pumps are frequently started in the liquid-cooling system, causing their aging to accelerate.
A temperature control system is designed, including an air-cooled module and a liquid-cooled module. Through the temperature acquisition module, the temperature of the power converter surface is obtained, and compared with the set threshold value, an electrical signal is sent to the data processing module to control the start and shutdown of air-cooled and liquid-cooled. By setting the liquid-cooling shutdown temperature to extend the temperature recovery time, the starting frequency of the liquid-cooling module is reduced.
It effectively reduces the starting frequency of the electronic water pump in the liquid cooling system, extends its life, and manually or automatically sets the power of the liquid cooling module to achieve long-term liquid cooling and cooling of the power converter, further improving the life of the electronic water pump.
Smart Images
Figure CN222867031U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power converters, in particular to a temperature control system of a power converter. Background Art
[0002] At present, in order to increase the life of the electronic water pump in the liquid cooling system of the power converter and reduce its aging rate, a structure that cools the power converter by switching between liquid cooling and air cooling has appeared on the market. When air cooling can meet the cooling demand of the power converter, only air cooling is used for cooling, thereby extending the service life of the electronic water pump. However, when the actual temperature of the power converter is exactly at the critical temperature for starting the liquid cooling system, for example, when the temperature rises from the upper limit of the operating temperature of the air cooling system to the critical temperature for starting the liquid cooling system, the liquid cooling system is started, and then the actual temperature of the power converter will drop to the operating temperature range of the air cooling system. At this time, the liquid cooling system is turned off again. However, after the liquid cooling system is turned off, the actual temperature of the power converter may rise again to the critical temperature for starting the liquid cooling system, resulting in frequent starting of the electronic water pump. At this time, due to its large starting current, it may cause its internal components to overheat and cause damage, thereby reducing the life of the electronic water pump. Utility Model Content
[0003] In view of the deficiencies of the prior art, the utility model provides a temperature control system for a power converter, which solves the problem that in a power converter with both air cooling and liquid cooling, the electronic water pump in the liquid cooling system may be frequently started and thus accelerate aging.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A temperature control system for a power converter, comprising an air cooling module and a liquid cooling module for cooling the power converter, and further comprising:
[0006] A temperature acquisition module, which is used to acquire the surface temperature of the power converter, and compare it with the air cooling threshold temperature, liquid cooling start temperature and liquid cooling shutdown temperature set by the human-computer interaction module, and send different electrical signals to the data processing module according to the numerical comparison results;
[0007] A data processing module, the data processing module is used to send corresponding start instructions and shutdown instructions to the air cooling module and the liquid cooling module according to the electrical signal output by the temperature acquisition module;
[0008] The human-computer interaction module is used to set the air cooling threshold temperature and the liquid cooling start temperature according to the cooling parameters of the air cooling module and the liquid cooling module, as well as the liquid cooling shutdown temperature for shutting down the liquid cooling module, and send the set parameters to the temperature acquisition module.
[0009] Preferably, the temperature acquisition module comprises:
[0010] A temperature acquisition module, which is used to obtain the temperature of the surface of the power converter and the parameters set by the human-computer interaction module;
[0011] A numerical comparison module, the numerical comparison module is used to output an air cooling start instruction to the air cooling module when the temperature is greater than the air cooling threshold temperature, output an air cooling shutdown instruction to the air cooling module when the temperature is less than the air cooling threshold temperature, output a liquid cooling start instruction to the liquid cooling module when the temperature is greater than the liquid cooling start temperature, and output a liquid cooling shutdown instruction to the liquid cooling module when the temperature is less than the liquid cooling shutdown temperature.
[0012] Preferably, the temperature acquisition module is a plurality of logic output temperature sensors for collecting temperatures at different positions on the surface of the power converter.
[0013] Preferably, the data processing module includes:
[0014] A signal processing module, the signal processing module is used to obtain a plurality of electrical signals output by the temperature acquisition module at the same time according to the clock signal, and fuse the plurality of electrical signals and send them to the signal output module;
[0015] The signal output module is used to send corresponding start instructions and shutdown instructions to the air cooling module and the liquid cooling module according to the electrical signal output by the signal processing module.
[0016] Preferably, the data processing module also includes an alarm module, which is used to count the interval time between two adjacent liquid cooling start temperatures and liquid cooling shutdown temperatures according to the clock signal, preset the alarm time threshold through the human-computer interaction module, and output an alarm signal according to the interval time and the alarm time threshold.
[0017] Preferably, a manual control module is further included, and the manual control module is used to input the output power of the liquid cooling module through the human-computer interaction module.
[0018] Compared with the prior art, the utility model provides a temperature control system for a power converter, which has the following beneficial effects:
[0019] 1. The utility model sets the liquid cooling start temperature and the liquid cooling shut-off temperature of the liquid cooling module respectively through a temperature acquisition module with a numerical comparison function and a human-computer interaction module for parameter setting, and sets the liquid cooling shut-off temperature to a lower level, thereby lengthening the time for the temperature in the power converter to return to the liquid cooling start temperature again, thereby reducing the start-up frequency of the liquid cooling module, so as to achieve the purpose of increasing the life of the electronic water pump in the liquid cooling protection module.
[0020] 2. Through the alarm module, when the heat generated by the power converter is large, the power converter can be cooled down by the manually set liquid cooling module power. Of course, the program can also automatically jump to the manually set liquid cooling module power, thereby achieving the purpose of long-term liquid cooling of the power converter, so as to reduce the starting frequency of the electronic water pump in the power converter and increase the life of the electronic water pump. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0022] Figure 1 This is a structural block diagram of the temperature control system of the utility model;
[0023] Figure 2 It is a schematic diagram of the parameter setting interface of the human-computer interaction module of the utility model.
[0024] In the figure: 1. Air cooling module; 2. Liquid cooling module; 3. Temperature acquisition module; 31. Temperature acquisition module; 32. Numerical comparison module; 4. Data processing module; 41. Signal processing module; 42. Signal output module; 43. Alarm module; 5. Human-computer interaction module; 6. Manual control module. DETAILED DESCRIPTION
[0025] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.
[0026] In order to solve the problem in the prior art that in a power converter with both air cooling and liquid cooling, the electronic water pump in the liquid cooling system may be frequently started and thus accelerate aging, this embodiment provides a temperature control system for the power converter, such as Figure 1 and Figure 2As shown, the timing of closing the liquid cooling is further set, thereby reducing the start-up frequency of the electronic water pump in the liquid cooling system, so as to achieve the purpose of increasing the life of the electronic water pump. The temperature control system includes an air cooling module 1 and a liquid cooling module 2 for cooling the power converter, and also includes: a temperature acquisition module 3 for acquiring the surface temperature of the power converter, and comparing it with the air cooling threshold temperature, liquid cooling start temperature and liquid cooling shutdown temperature set by the human-computer interaction module, and sending different electrical signals to the data processing module 4 according to the numerical comparison results. The temperature acquisition module 3 is essentially a temperature sensor. The models of temperature sensors with this function include CJ1W-PDC15, ADT7301ARTZ-500RL7 and ADT7301ARTZ-500RL7, etc.; it is used to obtain the electrical signal output by the temperature acquisition module 3 and send corresponding start instructions to the air cooling module 1 and the liquid cooling module 2. The data processing module 4 for the on / off instructions only needs a simple instruction issuing function, so its commonly used models include single chip microcomputers such as stm32 and SC7500; it is used to set the air cooling threshold temperature and the liquid cooling start temperature according to the cooling parameters of the air cooling module 1 and the liquid cooling module 2, as well as the liquid cooling shutdown temperature for shutting down the liquid cooling module 2, and send the set parameters to the human-computer interaction module 5 of the temperature acquisition module 3. The human-computer interaction module 5 can be a human-computer interaction screen of models such as Model3A and 6AV2124-0GC01-0AX0, which can perform relevant parameter settings, so that the liquid cooling shutdown temperature can be set to a lower temperature, such as setting it to the air cooling threshold temperature, and then performing a longer period of temperature control through the air cooling module 1 to reduce the working time of the electronic water pump in the liquid cooling module 2, and also avoid frequent switching in a short period of time, thereby increasing its life.
[0027] In order to further clarify the type of instruction issued by the temperature acquisition module 3 and the type of function possessed by the temperature acquisition module 3, so as to serve as a basis for selecting corresponding components, the temperature acquisition module 3 includes: a temperature acquisition module 31 for acquiring the temperature of the surface of the power converter and the parameters set by the human-computer interaction module 5; a numerical comparison module 32 for outputting an air cooling start instruction to the air cooling module 1 when the temperature is greater than the air cooling threshold temperature, outputting an air cooling shutdown instruction to the air cooling module 1 when the temperature is less than the air cooling threshold temperature, outputting a liquid cooling start instruction to the liquid cooling module 2 when the temperature is greater than the liquid cooling start temperature, and outputting a liquid cooling shutdown instruction to the liquid cooling module 2 when the temperature is less than the liquid cooling shutdown temperature. The components that realize this function can adopt temperature sensors of models such as CJ1W-PDC15.
[0028] The temperature acquired by the temperature acquisition module 3 may not be representative when acquiring temperature, because the temperature acquired is the temperature of one place of the power converter, and since the temperature on the power converter is relatively high, the effects of air cooling and liquid cooling are different at different positions. In order to make the acquired temperature more representative and avoid excessive local temperature of the power converter, the acquisition method of the temperature acquisition module 3 is further set. The temperature acquisition module 3 is a number of logic output temperature sensors for acquiring temperatures at different positions on the surface of the power converter, so that the temperature at different positions of the power converter can be acquired to monitor the temperature of different parts of the device, thereby preventing the situation where the temperature of individual parts is too high. At the same time, the logic output temperature sensor itself has the function of acquiring temperature and outputting a corresponding electrical signal after comparing it with the set value, such as ADT7301ARTZ-500RL7 and ADT7301ARTZ-500RL7 and other models of logic output temperature sensors, which are more convenient.
[0029] When the data processing module 4 receives the electrical signal output by the temperature acquisition module 3, when there is a situation where the temperature at different positions on the surface of the power converter is greater than the liquid cooling start temperature and there is a situation where the temperature is less than the liquid cooling start temperature, different electrical signals will be received. At this time, the electrical signals need to be merged to output a unique electrical signal for controlling the liquid cooling module 2. Therefore, the data processing module 4 includes: a signal processing module 41 for acquiring a plurality of electrical signals output by the temperature acquisition module 3 at the same time according to a clock signal, and merging the plurality of electrical signals and sending them to the signal output module 42. For example, for the electrical signal of the liquid cooling module 2, the temperature is greater than or less than the liquid cooling start temperature, and the corresponding output high and low levels are 0 and 1. If the temperature is greater than the liquid cooling start temperature, the signal is 1, then when there is 1 in the received electrical signal, an electrical signal is output to the signal output module 42, otherwise another electrical signal is output; the signal output module 42 is used to send corresponding start instructions and shutdown instructions to the air cooling module 1 and the liquid cooling module 2 according to the electrical signal output by the signal processing module 41, which can be implemented by single-chip microcomputers such as stm32 and SC7500.
[0030] When the power in the power converter is large, the temperature rises quickly. At this time, after the liquid cooling module 2 reduces its temperature to a certain temperature, as the liquid cooling module 2 is turned off, the temperature in the power converter may rise rapidly in a short time. At this time, the liquid cooling module 2 needs to be started again in a short time. Therefore, in order to reduce the start-up frequency of the liquid cooling module 2 in this case and improve the life of the electronic water pump, the data processing module 4 also includes an alarm module 43 for counting the interval time between two adjacent liquid cooling start temperatures and liquid cooling shut-off temperatures according to the clock signal, such as using Av-555M, ULY7855 and HA555, etc. The signal timer outputs the alarm signal, and presets the alarm time threshold through the human-computer interaction module 5, and outputs the alarm signal according to the interval time and the alarm time threshold. At this time, the employee can inquire about the cause of the alarm, or set the liquid cooling module 2 to work at a constant power that meets the cooling demand, so as to avoid the liquid cooling module 2 from being repeatedly started. At this time, the manual control module 6 can be operated, and the output power of the liquid cooling module 2 can be input through the human-computer interaction module 5 to keep the liquid cooling module 2 at a certain power for a long time. However, the program can also automatically jump to the manually set power of the liquid cooling module 2.
[0031] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.
[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A temperature control system for a power converter, comprising an air cooling module (1) and a liquid cooling module (2) for cooling the power converter, characterized in that: Also includes: A temperature acquisition module (3), the temperature acquisition module (3) being used to acquire the temperature of the surface of the power converter, and compare it with the air cooling threshold temperature, the liquid cooling start temperature and the liquid cooling shut-off temperature set by the human-computer interaction module, and send different electrical signals to the data processing module (4) according to the numerical comparison result; A data processing module (4), the data processing module (4) being used to send corresponding start instructions and shut down instructions to the air cooling module (1) and the liquid cooling module (2) according to the electrical signal output by the temperature acquisition module (3); The human-computer interaction module (5) is used to set an air cooling threshold temperature and a liquid cooling start temperature according to the cooling parameters of the air cooling module (1) and the liquid cooling module (2), as well as a liquid cooling shutoff temperature for shutting down the liquid cooling module (2), and send the set parameters to the temperature acquisition module (3).
2. The temperature control system according to claim 1, characterized in that: The temperature acquisition module (3) comprises: A temperature acquisition module (31), the temperature acquisition module (31) being used to acquire the temperature of the surface of the power converter and the parameters set by the human-computer interaction module (5); A numerical comparison module (32), the numerical comparison module (32) is used to output an air cooling start instruction to the air cooling module (1) when the temperature is greater than the air cooling threshold temperature, output an air cooling shutdown instruction to the air cooling module (1) when the temperature is less than the air cooling threshold temperature, output a liquid cooling start instruction to the liquid cooling module (2) when the temperature is greater than the liquid cooling start temperature, and output a liquid cooling shutdown instruction to the liquid cooling module (2) when the temperature is less than the liquid cooling shutdown temperature.
3. The temperature control system according to claim 1, characterized in that: The temperature acquisition module (3) is a plurality of logic output temperature sensors used to collect temperatures at different positions on the surface of the power converter.
4. The temperature control system according to claim 3, characterized in that: The data processing module (4) comprises: A signal processing module (41), the signal processing module (41) is used to obtain a plurality of electrical signals output by the temperature acquisition module (3) at the same time according to the clock signal, and to fuse the plurality of electrical signals and send them to the signal output module (42); A signal output module (42), wherein the signal output module (42) is used to send corresponding start instructions and shut down instructions to the air cooling module (1) and the liquid cooling module (2) according to the electrical signal output by the signal processing module (41).
5. The temperature control system according to claim 1, characterized in that: The data processing module (4) further comprises an alarm module (43), wherein the alarm module (43) is used to count the interval time between two adjacent liquid cooling start temperatures and liquid cooling shut-off temperatures according to the clock signal, preset an alarm time threshold through the human-computer interaction module (5), and output an alarm signal according to the interval time and the alarm time threshold.
6. The temperature control system according to claim 1, characterized in that: It also includes a manual control module (6), which is used to input the output power of the liquid cooling module (2) through the human-computer interaction module (5).