Variable frequency electric control box for vehicle-mounted heat generating electronic equipment liquid cooling system, vehicle-mounted heat generating electronic equipment liquid cooling system and control method for variable frequency electric control box for vehicle-mounted heat generating electronic equipment liquid cooling system

Abstract

The application relates to the technical field of heat dissipation of high-power electronic equipment on vehicles, in particular to a variable-frequency electric control box for a liquid cooling system of vehicle-mounted heat-generating electronic equipment, the liquid cooling system of vehicle-mounted heat-generating electronic equipment and a control method for the variable-frequency electric control box of the liquid cooling system of vehicle-mounted heat-generating electronic equipment. The variable-frequency electric control box comprises a box body, multiple functional units and an air guide assembly. The box body is provided with a bottom plate and a first side plate which are connected, and the bottom plate and the first side plate are respectively provided with cooling medium. At least one functional unit is arranged on the bottom plate and the first side plate. The air guide assembly comprises a first air guide piece and a second air guide piece. The first air guide piece is arranged towards the bottom plate and is used for forming air flow blowing towards the bottom plate. The second air guide piece is arranged towards the first side plate and is used for forming air flow blowing towards the first side plate. In this way, even in the case of extremely high-temperature working conditions and the temperature of the cooling medium being already high, the functional unit still has sufficient temperature rise allowance, so that the working temperature of the functional unit will not exceed the tolerance temperature, and the service life of the functional unit is greatly improved.

Description

Technical Field

[0001] This application relates to the field of vehicle-mounted radar heat dissipation technology, and in particular to a variable frequency control box for a liquid cooling system of vehicle-mounted heat-generating electronic devices, a liquid cooling system for vehicle-mounted heat-generating electronic devices, and a control method for the variable frequency control box for the liquid cooling system of vehicle-mounted heat-generating electronic devices. Background Technology

[0002] Vehicle-mounted radar cooling systems generally employ a closed-loop liquid cooling system. A variable-frequency pump drives the continuous circulation of coolant, transferring the heat generated during radar operation to the coolant to cool the radar. After absorbing heat, the coolant can exchange heat with the external environment, dissipating the heat. To ensure effective heat transfer, the coolant temperature needs to be higher than the ambient temperature. However, under extreme high-temperature conditions, where outdoor temperatures can reach 55°C, the coolant temperature may rise to 65°C or even higher to ensure smooth heat exchange between the coolant and the environment.

[0003] All electrical components driving the variable frequency liquid supply pump must be integrated within the variable frequency control box. These components continuously generate heat during operation, which accumulates at the top of the control box, easily causing a rapid rise in temperature. Under extreme high-temperature conditions, the components rely on the aforementioned 65°C or higher-temperature coolant for heat dissipation. The coolant itself is already quite hot, significantly reducing the component's heat dissipation margin. Combined with the heat accumulated within the control box, this can easily cause the component's operating temperature to exceed its tolerance, severely impacting its lifespan. Summary of the Invention

[0004] This application provides a variable frequency control box for a liquid cooling system of vehicle-mounted heat-generating electronic devices, in order to solve the problem of heat accumulation in the box caused by existing components, which leads to the superposition of temperature rise caused by heat reheating the components.

[0005] In a first aspect, this application provides a variable frequency control box for a liquid cooling system of an on-board heat-generating electronic device. The variable frequency control box includes a housing, multiple functional units, and an air guiding assembly. The housing has a bottom plate and a first side plate connected to each other, and cooling medium is respectively contained in the bottom plate and the first side plate. At least one of the functional units is respectively disposed on the bottom plate and the first side plate. The air guiding assembly includes a first air guide and a second air guide. The first air guide is disposed towards the bottom plate to form an airflow blowing towards the bottom plate; the second air guide is disposed towards the first side plate to form an airflow blowing towards the first side plate.

[0006] Furthermore, the housing also includes a second side plate connected to the bottom plate, the second side plate being disposed opposite to the first side plate, and the first air guide and the second air guide being disposed at intervals on the second side plate.

[0007] Furthermore, the housing also includes a third side panel, on which at least one of the aforementioned functional units is provided. This functional unit is connected to the bottom plate or the first side panel via a heat-conducting component.

[0008] Furthermore, a first suction component is provided on the base plate, which is used to cooperate with the first air guide component to form an airflow blowing toward the base plate; a second suction component is provided on the first side plate, which is used to cooperate with the second air guide component to form an airflow blowing toward the first side plate.

[0009] Furthermore, each of the functional units is provided with a first temperature sensing element, which is used to collect first temperature information corresponding to the functional unit.

[0010] Furthermore, a second temperature sensor is provided on the top plate of the enclosure, which is used to collect the second temperature information of the enclosure.

[0011] Secondly, this application also provides a liquid cooling system for vehicle-mounted heat-generating electronic devices, including the frequency converter control box for the liquid cooling system for vehicle-mounted heat-generating electronic devices as described above.

[0012] Furthermore, the vehicle-mounted heat-generating electronic device liquid cooling system also includes a circulating liquid supply component. The base plate and the first side plate are respectively provided with a liquid inlet and a liquid outlet. The circulating liquid supply component is used to supply cooling medium to the base plate or the first side plate through the liquid inlet and return it to the circulating liquid supply component through the liquid outlet.

[0013] Furthermore, the circulating liquid supply assembly includes a liquid distribution manifold and a liquid return manifold. The inlet of the liquid distribution manifold is connected to the liquid supply source, and the outlet of the liquid distribution manifold is connected to the liquid inlet on the base plate and the first side plate, respectively. The inlet of the liquid return manifold is connected to the liquid outlet on the base plate and the first side plate, respectively, and the outlet of the liquid return manifold is connected to the liquid return source.

[0014] Furthermore, a third temperature sensor is provided on the liquid distribution manifold, which is used to collect the third temperature information of the cooling medium flowing through the liquid distribution manifold.

[0015] Thirdly, this application also provides a control method for a variable frequency control box for a liquid cooling system of vehicle-mounted heat-generating electronic devices, applied to the variable frequency control box for a liquid cooling system of vehicle-mounted heat-generating electronic devices as described above, the control method comprising: The temperature of the cooling medium flowing into the base plate and the first side plate is obtained; When the temperature of the cooling medium is within a first preset threshold range, temperature information related to the variable frequency control box is determined. The temperature information includes at least one of the following: temperature information of the cooling medium, temperature information inside the box, and temperature information of the functional unit. The operating status of the air guide assembly and / or the functional unit is controlled based on the temperature information.

[0016] Furthermore, controlling the operating state of the air guide assembly and / or the functional unit based on the temperature information specifically includes: When the temperature of the cooling medium is within a second preset threshold range and the temperature inside the box is within a third preset threshold range, the air guide assembly is controlled to stop operating and the functional unit is controlled to operate at a first power, wherein the second preset threshold range is less than the first preset threshold range. When the temperature of the cooling medium is within the fourth preset threshold range, or when the temperature inside the box is greater than the third preset threshold range, the air guide assembly is controlled to operate until the temperature inside the box drops to the target temperature. The second preset threshold range, the fourth preset threshold range, and the first preset threshold range increase sequentially.

[0017] Furthermore, the control method for controlling the operating state of the air guide assembly and / or the functional unit based on the temperature information further includes: When the temperature of the functional unit is greater than or equal to a fifth preset threshold, the functional unit is controlled to operate at a second power, wherein the first power is greater than the second power; When the temperature of the functional unit is greater than or equal to the sixth preset threshold, the functional unit is controlled to stop operating and other functional units are controlled to start operating. The sixth preset threshold is greater than the fifth preset threshold.

[0018] Furthermore, the control method for controlling the operating state of the air guide assembly and / or the functional unit based on the temperature information further includes: If the temperature of the cooling medium remains within a seventh preset threshold range for a first preset duration, the functional unit is controlled to operate at a third power, and the air guide assembly is controlled to operate, with the second power, the third power, and the first power increasing sequentially. If the temperature of the cooling medium exceeds the first preset threshold range, the functional unit is controlled to stop operating.

[0019] Furthermore, the control method further includes: Obtain the user's operation command to switch the functional unit; Based on the operation command, the air guide assembly is controlled to deliver airflow to the base plate or the first side plate where the selected functional unit is located for a second preset duration.

[0020] The technical solutions provided in this application have the following advantages compared with the prior art: The variable frequency control box for a liquid cooling system of automotive heating electronic devices disclosed in this application can be equipped with at least one functional unit on the base plate and the first side plate, respectively. A first air guide can create airflow towards the base plate within the box, and a second air guide can create airflow towards the first side plate within the box. In this way, the base plate and the first side plate can not only exchange heat with the functional units respectively, thereby reducing the operating temperature of the functional units, but also, under the action of the first and second air guides, the base plate and the first side plate can exchange heat with the airflow blowing towards their respective surfaces, thereby reducing the ambient temperature inside the box and preventing heat accumulation within the box. This eliminates the problem of temperature rise superposition caused by secondary heating of the functional units by high-temperature air. Thus, even under extreme high-temperature conditions and when the temperature of the cooling medium itself is already high, the functional units still have sufficient temperature rise margin, ensuring that the operating temperature of the functional units will not exceed their tolerance temperature, greatly extending the service life of the functional units. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0024] Figure 1 A perspective view of a variable frequency control box for a liquid cooling system of an on-board heating electronic device provided in an embodiment of this application; Figure 2 A schematic diagram of the liquid cooling system for vehicle-mounted heat-generating electronic devices provided in this application embodiment; Figure 3 A flowchart illustrating the control method for the variable frequency control box of the liquid cooling system for vehicle-mounted heating electronic devices provided in this application embodiment. Figure 1 ; Figure 4 A flowchart illustrating the control method for the variable frequency control box of the liquid cooling system for vehicle-mounted heating electronic devices provided in this application embodiment. Figure 2 ; Figure 5 A flowchart illustrating the control method for the variable frequency control box of the liquid cooling system for vehicle-mounted heating electronic devices provided in this application embodiment. Figure 3 ; Figure 6 A flowchart illustrating the control method for the variable frequency control box of the liquid cooling system for vehicle-mounted heating electronic devices provided in this application embodiment. Figure 4 ; Figure 7 A flowchart illustrating the control method for the variable frequency control box of the liquid cooling system for vehicle-mounted heating electronic devices provided in this application embodiment. Figure 5 ; Figure 8 A flowchart illustrating the control method for the variable frequency control box of the liquid cooling system for vehicle-mounted heating electronic devices provided in this application embodiment. Figure 6 .

[0025] Explanation of reference numerals in the attached figures: 1. Housing; 11. Base plate; 12. First side plate; 13. Second side plate; 14. Liquid inlet; 15. Liquid outlet; 2. Functional units; 3. Air guide assembly; 31. First air guide component; 32. Second air guide component; 4. Circulating liquid supply assembly; 41. Liquid distribution manifold; 42. Liquid return manifold. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0028] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0029] To address the issue of heat accumulation within the housing 1 caused by existing components, which leads to a secondary heating of the components and a cumulative temperature rise. To address the aforementioned technical problems, this application provides a variable frequency control box for a liquid cooling system of vehicle-mounted heat-generating electronic devices, such as... Figure 1 and Figure 2 As shown, the variable frequency control box includes a housing 1, multiple functional units 2, and an air guide assembly 3. The housing 1 has a bottom plate 11 and a first side plate 12 connected to each other, and cooling media are respectively contained in the bottom plate 11 and the first side plate 12. At least one functional unit 2 is respectively provided on the bottom plate 11 and the first side plate 12. The air guide assembly 3 includes a first air guide 31 and a second air guide 32. The first air guide 31 is disposed towards the bottom plate 11 to form an airflow blowing towards the bottom plate 11; the second air guide 32 is disposed towards the first side plate 12 to form an airflow blowing towards the first side plate 12.

[0030] The aforementioned housing 1 can be made of aluminum alloy, and the bottom plate 11 and the first side plate 12 of the housing 1 can each have microchannels for the circulation of cooling medium. The liquid supply pump in the closed liquid cooling circuit of the vehicle radar can pump the cooling medium into the microchannels, thereby realizing the circulation of the cooling medium in the bottom plate 11 and the first side plate 12.

[0031] Each of the aforementioned functional units 2 may include a frequency converter. The frequency converter can be used to adjust the output frequency of the aforementioned liquid supply pump, and by changing its output frequency, dynamic control of the cooling medium flow rate can be achieved. It is understood that the frequency converter will generate a certain amount of heat loss during operation, which can be continuously converted into a large amount of heat energy and released externally. Of course, each functional unit 2 may also include other components, and this application does not specifically limit this.

[0032] At least one functional unit 2 can be provided on the base plate 11 and the first side plate 12 respectively. Specifically, the number of functional units 2 can be three. The three functional units 2 can adopt a redundant working design of two in use and one in standby. In actual operation, two functional units 2 can be selected to operate, and the remaining functional unit 2 can be used as a backup. In case of failure of functional unit 2 during operation, the system can quickly switch to the backup functional unit 2, thereby achieving long-term stable operation of the vehicle radar liquid cooling circuit.

[0033] Taking the example that there can be three functional units 2, one functional unit 2 can be set on the base plate 11, and the other two functional units 2 can be set on the first side plate 12. In this way, the heat generated by the frequency converter during operation can be exchanged with the cooling medium in the base plate 11 and the first side plate 12, thereby reducing the temperature of the frequency converter. Furthermore, by partitioning the frequency converter on the base plate 11 and the first side plate 12, the internal space of the frequency converter control box can be fully utilized, ensuring the compactness and miniaturization of the frequency converter control box. It can be understood that, based on this, the size of the frequency converter control box of this application can be controlled to 650mm × 440mm × 290mm (length × width × height).

[0034] The first air guide 31 and the second air guide 32 can be respectively installed in the housing 1. The first air guide 31 can blow part of the air inside the housing 1 towards the bottom plate 11, so that this part of the air can exchange heat with the cooling medium in the bottom plate 11, thereby reducing the temperature of this part of the air. The second air guide 32 can blow another part of the air inside the housing 1 towards the first side plate 12, so that this other part of the air can exchange heat with the cooling medium in the first side plate 12, thereby reducing the temperature of this other part of the air. In this way, the bottom plate 11 and the first side plate 12 can not only exchange heat with the functional unit 2 to reduce the temperature of the functional unit 2, but also exchange heat with the hot air accumulated in the housing 1, thereby reducing the overall temperature inside the housing 1. The applicant has verified through simulation that under extreme high temperature conditions, even if the temperature of the cooling medium reaches 65 degrees Celsius, the temperature inside the housing 1 can be reduced from 85 degrees Celsius to below 68 degrees Celsius, and the temperature of the functional unit 2 does not exceed 86 degrees Celsius.

[0035] It is understandable that, since both the first air guide 31 and the second air guide 32 are located inside the housing 1, the housing 1 of this application can adopt a fully enclosed structure, without the need to open heat dissipation vents on the housing 1, effectively ensuring the high protection level and structural strength of the housing 1.

[0036] The number of the aforementioned second air guides 32 can correspond to the number of frequency converters on the first side plate 12, such as... Figure 2 As shown, there can be two second air guides 32. These two second air guides 32 can be respectively configured to correspond to the two frequency converters on the first side plate 12, so as to accurately remove the heat released by the two frequency converters. Specifically, the aforementioned first air guide 31 and second air guide 32 can be fans.

[0037] The variable frequency control box for a liquid cooling system of vehicle-mounted heat-generating electronic devices disclosed in this application can be provided with at least one functional unit 2 on the base plate 11 and the first side plate 12 respectively. A first air guide 31 can form an airflow towards the base plate 11 within the box body 1, and a second air guide 32 can form an airflow towards the first side plate 12 within the box body 1. In this way, the base plate 11 and the first side plate 12 can not only exchange heat with the functional unit 2 respectively, thereby reducing the operating temperature of the functional unit 2, but also, under the action of the first and second air guides 31 and 32, the base plate 11 and the first side plate 12 can exchange heat with the airflow blowing towards their respective surfaces, thereby reducing the ambient temperature inside the box body 1, preventing heat accumulation inside the box body 1, and eliminating the temperature rise problem caused by secondary heating of the functional unit 2 by high-temperature air. Thus, even under extreme high-temperature conditions and when the temperature of the cooling medium itself is already high, the functional unit 2 still has sufficient temperature rise margin, ensuring that the operating temperature of the functional unit 2 will not exceed its tolerance temperature, greatly improving the service life of the functional unit 2.

[0038] In some embodiments, such as Figure 2 As shown, the housing 1 also includes a second side plate 13 connected to the bottom plate 11. The second side plate 13 is disposed opposite to the first side plate 12, and the first air guide 31 and the second air guide 32 are disposed at intervals on the second side plate 13.

[0039] like Figure 2 As shown, there can be two second air guides 32. One first air guide 31 and two second air guides 32 can be arranged at intervals along the length of the second side plate 13. The first air guide 31 and the two second air guides 32 can each be provided with an air guiding structure. The air guiding structure can make the airflow generated by the first air guide 31 blow more concentratedly toward the bottom plate 11, and the airflow generated by the second air guide 32 blow more concentratedly toward the first side plate 12.

[0040] In the above embodiment, the first air guide 31 and the second air guide 32 can be spaced apart on the second side plate 13. This allows the airflow generated by the first air guide 31 and the second air guide 32 to form a unidirectional circulating flow within the housing 1, avoiding problems such as airflow obstruction, dead air zones, and localized heat accumulation within the housing 1. Furthermore, the centralized arrangement of the first air guide 31 and the second air guide 32 ensures a neat and uniform assembly layout, fully guaranteeing the rationality and integration of the components of the frequency converter control box, and effectively ensuring the compactness and rationality of the frequency converter control box's structural layout.

[0041] In some embodiments, the housing 1 further includes a third side plate, on which at least one functional unit 2 is provided, which is connected to the bottom plate 11 or the first side plate 12 via a heat-conducting element.

[0042] The aforementioned third side panel can refer to the top panel, front panel, or rear panel of the housing 1, etc., and this application does not specifically limit this. The third side panel may not contain a cooling medium; it serves only as an enclosure structure for the housing 1. When the functional unit 2 is mounted on the third side panel, the functional unit 2 can be connected to the bottom plate 11 or the first side panel 12 via a heat-conducting component. This allows the heat generated by the functional unit 2 during operation to be transferred to the bottom plate 11 or the first side panel 12, where it can exchange heat with the cooling medium flowing within the bottom plate 11 or the first side panel 12. It is understood that the aforementioned heat-conducting component can be made of metal to ensure efficient heat transfer.

[0043] In the above embodiments, when the functional unit 2 is set on the third side plate, the functional unit 2 can be connected to the bottom plate 11 or the first side plate 12 through a heat-conducting component. This not only allows the heat generated by the functional unit 2 to be quickly transferred to the bottom plate 11 or the first side plate 12 to ensure the heat dissipation needs of the functional unit 2, but also allows for flexible adaptation to the installation and arrangement requirements of the functional unit 2 in different positions within the housing 1, effectively improving the diversity of the functional unit 2's setting position.

[0044] In some embodiments, a first suction member is provided on the base plate 11, which is used to cooperate with the first air guide member 31 to form an airflow blowing toward the base plate 11; a second suction member is provided on the first side plate 12, which is used to cooperate with the second air guide member 32 to form an airflow blowing toward the first side plate 12.

[0045] In the above embodiment, the first suction component can draw in the airflow blown toward the bottom plate 11 to form a directional airflow toward the bottom plate 11 in conjunction with the first air guide component 31. The second suction component can draw in the airflow blown toward the first side plate 12 to form a directional airflow toward the first side plate 12 in conjunction with the second air guide component 32. This avoids the airflow from spreading outwards or short-circuiting back during the flow process, allowing the airflow to be blown more concentrated toward the bottom plate 11 or the first side plate 12, further improving the heat exchange efficiency between the bottom plate 11 or the first side plate 12 and the air inside the housing 1.

[0046] In some embodiments, each functional unit 2 is provided with a first temperature sensing element (not shown in the figure), which is used to collect first temperature information of the corresponding functional unit 2.

[0047] The first temperature sensing element mentioned above can be a surface-mount thermistor, an NTC temperature probe, a thermocouple sensor, etc., and this application does not make any specific limitations on it.

[0048] In the above embodiments, each functional unit 2 may be equipped with a first temperature sensing element. The first temperature sensing element can acquire the real-time temperature of the corresponding functional unit 2 in real time and accurately, realizing independent monitoring of the temperature of each functional unit 2, and providing accurate and reliable temperature basis for the operation control of the functional unit 2. Furthermore, the first temperature sensing element has a simple structure and low manufacturing cost, which is beneficial to the cost control of the frequency converter control box.

[0049] In some embodiments, a second temperature sensor (not shown in the figure) is provided on the top plate of the enclosure 1. The second temperature sensor is used to collect the second temperature information of the enclosure 1.

[0050] The aforementioned second temperature sensing element can be disposed in the middle area of ​​the top plate, and can be disposed 20 mm above the functional unit 2 on the bottom plate 11.

[0051] The aforementioned second temperature sensing element can be a surface-mount thermistor, an NTC temperature probe, a thermocouple sensor, etc., and this application does not specifically limit it.

[0052] In the above embodiments, the second temperature sensor can acquire the temperature information of the air inside the housing 1 in real time and accurately, so as to provide real-time feedback on the temperature rise status of the air inside the housing 1. Furthermore, combined with the first temperature sensor installed in the functional unit 2, a dual temperature measurement system can be formed between the temperature sensing of the functional unit 2 and the temperature sensing inside the housing 1, providing accurate and reliable temperature data for the operation control of the air guide assembly 3 and the functional unit 2. Moreover, the second temperature sensor has a simple structure and low manufacturing cost, further ensuring cost control of the frequency converter control box.

[0053] This application also provides a liquid cooling system for vehicle-mounted heat-generating electronic devices, including the frequency converter control box for the liquid cooling system for vehicle-mounted heat-generating electronic devices as described above.

[0054] The liquid cooling system for vehicle-mounted heating electronic devices of this application includes the frequency converter control box for the liquid cooling system for vehicle-mounted heating electronic devices as described above. Since the frequency converter control box for the liquid cooling system for vehicle-mounted heating electronic devices has the beneficial effects described above, the liquid cooling system for vehicle-mounted heating electronic devices described above must also have the beneficial effects described above.

[0055] In some embodiments, such as Figure 2 As shown, the vehicle-mounted heat-generating electronic device liquid cooling system also includes a circulating liquid supply assembly 4. The base plate 11 and the first side plate 12 are respectively provided with a liquid inlet 14 and a liquid outlet 15. The circulating liquid supply assembly 4 is used to supply cooling medium to the base plate 11 or the first side plate 12 through the liquid inlet 14, and return it to the circulating liquid supply assembly 4 through the liquid outlet 15.

[0056] The aforementioned liquid inlet 14 and liquid outlet 15 can be connected to the circulating liquid supply assembly 4 via pipelines. The circulating liquid supply assembly 4 can deliver the cooling medium to the bottom plate 11 or the first side plate 12 through the liquid inlet 14. After circulating along the microchannels in the bottom plate 11 or the first side plate 12, the cooling medium can flow back to the circulating liquid supply assembly 4 through the liquid outlet 15, thereby continuously removing the heat transferred from the functional unit 2 on the bottom plate 11 or the first side plate 12, as well as the heat transferred from the box 1 to the air.

[0057] In the above embodiment, the circulating liquid supply assembly 4 can supply cooling medium to the base plate 11 or the first side plate 12 via the liquid inlet 14, and the cooling medium can flow back to the circulating liquid supply assembly 4 via the liquid outlet 15 after heat exchange. In this way, continuous heat dissipation is achieved for the functional unit 2 and the air inside the housing 1, the operating temperature of the functional unit 2 is stably controlled, and the accumulation of high temperature inside the housing 1 is avoided, which would affect the operational reliability and service life of the functional unit 2.

[0058] In some embodiments, such as Figure 2 As shown, the circulating liquid supply assembly 4 includes a liquid distribution manifold 41 and a liquid return manifold 42. The liquid inlet of the liquid distribution manifold 41 is connected to the liquid supply source, and the liquid outlet of the liquid distribution manifold 41 is connected to the liquid inlet interface 14 on the base plate 11 and the first side plate 12, respectively. The liquid inlet of the liquid return manifold 42 is connected to the liquid outlet interface 15 on the base plate 11 and the first side plate 12, respectively, and the liquid outlet of the liquid return manifold 42 is connected to the liquid return source.

[0059] The outlet of the liquid distribution manifold 41 and the inlet of the return manifold 42 can be equipped with manual balancing valves (not shown in the figure). Users can adjust the opening of each manual balancing valve to independently adjust the flow rate of the cooling medium in the base plate 11 or the first side plate 12, so as to achieve the flow rate ratio of the cooling medium in the base plate 11 and the first side plate 12, making the flow rate of the cooling medium in the base plate 11 and the first side plate 12 uniform and consistent, eliminating the problem of excessive local temperature difference caused by the flow rate of the cooling medium in a single pipeline being too large or too small, and improving the heat dissipation uniformity and temperature control stability of the liquid cooling system of the vehicle-mounted heat-generating electronic equipment.

[0060] In the above embodiments, the cooling medium can be distributed to the base plate 11 and the first side plate 12 via the distribution manifold 41, and then returned to the circulating liquid supply assembly 4 via the return manifold 42. This realizes the independent circulation of the cooling medium in the base plate 11 and the first side plate 12. While ensuring that the cooling medium in the base plate 11 and the first side plate 12 can be independently controlled, it also effectively simplifies the structural layout of the liquid cooling system for vehicle-mounted heat-generating electronic devices.

[0061] In some embodiments, a third temperature sensor (not shown in the figure) is provided on the liquid distribution manifold 41. The third temperature sensor is used to collect third temperature information of the cooling medium flowing through the liquid distribution manifold 41.

[0062] The aforementioned liquid cooling system for vehicle-mounted heat-generating electronic devices may also include a controller. The air guide assembly 3, the functional unit 2, the first temperature sensor, the second temperature sensor, and the third temperature sensor may be electrically connected to the controller. In this way, the controller can comprehensively determine the operating status of the air guide assembly 3 and the functional unit 2 based on the temperature information collected by each temperature sensor, thereby realizing the coordinated adjustment of the liquid cooling system for vehicle-mounted heat-generating electronic devices.

[0063] It should be noted that the controller can be built using electronic components such as timers, comparators, registers, and digital logic circuits, or implemented using processor chips such as microcontrollers, microprocessors, programmable logic controllers (PLCs), digital signal processors (DSPs), field-programmable gate arrays (FPGAs), programmable logic arrays (PLAs), and application-specific integrated circuits (ASICs) and their peripheral circuits.

[0064] The aforementioned third temperature sensing element can be a surface-mount thermistor, an NTC temperature probe, a thermocouple sensor, etc., and this application does not make any specific limitations on it.

[0065] In the above embodiments, the third temperature sensor can collect the temperature information of the cooling medium flowing into the base plate 11 or the first side plate 12 in real time, and use this as the basis for the operation control of the air guide assembly 3 and the functional unit 2. For example, when the third temperature information collected by the third temperature sensor is high, the first air guide 31 and the second air guide 32 can be controlled to start operation in advance to blow the air in the box 1 toward the base plate 11 or the first side plate 12, thereby quickly removing the heat accumulated in the box 1, avoiding the situation where the performance of the functional unit 2 is reduced due to the excessive temperature of the cooling medium, and effectively ensuring the stability of the operation of the liquid cooling system of the vehicle-mounted heat-generating electronic equipment.

[0066] This application further provides a control method for a variable frequency control box for a liquid cooling system of vehicle-mounted heat-generating electronic devices, applied to the variable frequency control box for a liquid cooling system of vehicle-mounted heat-generating electronic devices as described above, such as... Figure 3 As shown, the control method includes steps S110 to S130.

[0067] Step S110: Obtain the temperature of the cooling medium flowing into the bottom plate 11 and the first side plate 12.

[0068] The temperature of the cooling medium flowing through the manifold 41 can be obtained using a third temperature sensor, thereby determining the temperature of the cooling medium before it flows into the base plate 11 and the first side plate 12.

[0069] Step S120: When the temperature of the cooling medium is within the first preset threshold range, determine the temperature information related to the frequency converter control box. The temperature information includes at least one of the following: the temperature information of the cooling medium, the temperature information inside the box 1, and the temperature information of the functional unit 2.

[0070] like Figure 8As shown, the first preset temperature threshold can be less than 70 degrees Celsius. When the temperature of the cooling medium is less than 70 degrees Celsius, the temperature information related to the frequency converter control box can be determined. Specifically, the temperature information of the cooling medium can be determined as Tcool, the temperature information inside the box 1 can be determined as Tair, and the temperature information of the functional unit 2 can be determined as Tipm.

[0071] It is understood that the temperature information of the cooling medium, the temperature information inside the housing 1, and the temperature information of the functional unit 2 can be determined periodically at preset time intervals to ensure the real-time and continuous nature of the aforementioned temperature information and facilitate timely capture of changes in the aforementioned temperature information. The aforementioned preset time interval can be from 1 second to 5 seconds, etc., and this application does not specifically limit it in this regard.

[0072] Step S130: Control the operating status of the air guide assembly 3 and / or functional unit 2 according to the temperature information.

[0073] In the above embodiments, when the temperature of the cooling medium flowing into the bottom plate 11 and the first side plate 12 is within the first preset threshold range, the operating condition of the variable frequency control box can be comprehensively determined by combining at least one temperature measurement data from the temperature information of the cooling medium, the temperature information inside the box 1, and the temperature information of the functional unit 2. In this way, the operating status of the air guide assembly 3 and / or the functional unit 2 can be adjusted in a coordinated manner. By relying on multi-dimensional temperature parameters, the coordinated and refined adjustment of the air guide assembly 3 and / or the functional unit 2 can be achieved, which significantly improves the reliability and economy of temperature control of the variable frequency control box.

[0074] In some embodiments, such as Figure 4 As shown, step S130: control the operating status of the air guide assembly 3 and / or functional unit 2 according to the temperature information, specifically including steps S210 and S220.

[0075] Step S210: When the temperature of the cooling medium is within the second preset threshold range and the temperature inside the housing 1 is within the third preset threshold range, the air guide assembly 3 is stopped and the control function unit 2 is operated at the first power, and the second preset threshold range is less than the first preset threshold range.

[0076] The aforementioned variable frequency control box can have both a conventional cooling mode and an enhanced heat exchange mode. For example... Figure 8 As shown, the second preset threshold range can be less than or equal to 55 degrees Celsius. The third preset threshold range can be less than or equal to 70 degrees Celsius. When the temperature of the cooling medium is less than or equal to 55 degrees Celsius and the temperature inside the housing 1 is less than or equal to 70 degrees Celsius, the frequency converter control box can be in normal cooling mode. At this time, the air guide assembly 3 can stop operating, and the functional unit 2 can operate at normal full power (i.e., first power).

[0077] Step S220: When the temperature of the cooling medium is within the fourth preset threshold range, or the temperature inside the housing 1 is greater than the third preset threshold range, control the air guide assembly 3 to operate until the temperature inside the housing 1 drops to the target temperature. The second preset threshold range, the fourth preset threshold range, and the first preset threshold range increase sequentially.

[0078] like Figure 8 As shown, the fourth preset threshold range can be greater than 50 degrees Celsius and less than or equal to 65 degrees Celsius. When the temperature of the cooling medium is greater than 50 degrees Celsius and less than or equal to 65 degrees Celsius, or the temperature inside the housing 1 is greater than 70 degrees Celsius, the frequency converter control box can be in enhanced heat exchange mode. At this time, the air guide assembly 3 can be turned on and run until the temperature inside the housing 1 drops to the target temperature.

[0079] It is understandable that the above target temperature can be customized according to actual operating conditions. For example, such as Figure 8 As shown, the target temperature can be 65 degrees Celsius.

[0080] In the above embodiments, when the temperature of the cooling medium is within the second preset threshold range and the temperature inside the housing 1 is within the third preset threshold range, the air guide assembly 3 can stop operating and the functional unit 2 can operate at the first power. While ensuring that the output performance of the functional unit 2 is not limited, the power consumption generated by the continuous operation of the air guide assembly 3 is eliminated, effectively reducing the energy consumption of the frequency converter control box and improving its operational economy. However, when the temperature of the cooling medium is within the fourth preset threshold range, or the temperature inside the housing 1 is greater than the third preset threshold range, it indicates that the heat dissipation conditions of the environment where the functional unit 2 is located have deteriorated. At this time, the air guide assembly 3 can start operating and continue operating until the temperature inside the housing 1 drops to the target temperature, thereby maintaining a suitable operating temperature for the functional unit 2 inside the housing 1, significantly improving the stability and service life of the frequency converter control box.

[0081] In some embodiments, such as Figure 5 As shown, step S130: The control method controls the operating state of the air guide assembly 3 and / or functional unit 2 according to the temperature information, and also includes steps S310 and S320.

[0082] Step S310: When the temperature of functional unit 2 is greater than or equal to the fifth preset threshold, control functional unit 2 to operate at the second power, where the first power is greater than the second power.

[0083] The aforementioned variable frequency control box can also have a maximum derating mode. For example... Figure 8As shown, the fifth preset threshold can be 90 degrees Celsius. When the temperature of functional unit 2 is greater than or equal to 90 degrees Celsius, the frequency converter control box can be in extreme derating mode, at which time functional unit 2 operates at the second power (the second power can be 50% of the first power).

[0084] Step S320: When the temperature of functional unit 2 is greater than or equal to the sixth preset threshold, control functional unit 2 to stop running and control other functional units 2 to start running. The sixth preset threshold is greater than the fifth preset threshold.

[0085] like Figure 8 As shown, the sixth preset threshold can be 92 degrees Celsius. When the temperature of functional unit 2 continues to rise to a value greater than or equal to 92 degrees Celsius, the frequency converter control box can control functional unit 2 to stop operating and control other functional units 2 to start operating.

[0086] In the above embodiments, when the temperature of functional unit 2 is greater than or equal to the fifth preset threshold, functional unit 2 can be controlled to operate at the second power, thereby slowing down its temperature rise by reducing the operating power of functional unit 2. When the temperature of functional unit 2 continues to rise to greater than or equal to the sixth preset threshold, the high-temperature functional unit 2 can be directly shut down, while other functional units 2 are turned on to share the workload. This avoids thermal failure caused by continuous high-load heating of functional unit 2, and does not interrupt the operation of the frequency converter control box, significantly reducing the risk of damage from overheating of functional unit 2, effectively extending the service life of functional unit 2, and improving the safety and reliability of the frequency converter control box operation.

[0087] In some embodiments, such as Figure 6 As shown, step S130: The control method controls the operating state of the air guide assembly 3 and / or functional unit 2 according to the temperature information, and also includes steps S410 and S420.

[0088] Step S410: If the temperature of the cooling medium remains within the range of the seventh preset threshold for a first preset duration, the control function unit 2 operates at the third power and controls the air guide assembly 3 to operate, with the second power, third power and first power increasing sequentially.

[0089] The aforementioned variable frequency control box can also have a high-temperature suppression mode. For example... Figure 8As shown, the first preset duration can be 3 minutes, and the seventh preset threshold range can be greater than 67 degrees Celsius. When the temperature of the cooling medium remains greater than 67 degrees Celsius within 3 minutes, the frequency converter control box can be in high temperature suppression mode. At this time, the functional unit 2 operates at the third power (the third power can be 70% of the first power) and controls the air guide assembly 3 to operate continuously. This reduces the operating power of the functional unit 2 to slow down its temperature rise, while also using the air guide assembly 3 to quickly reduce the temperature inside the box 1.

[0090] Step S420: When the temperature of the cooling medium exceeds the first preset threshold range, the control function unit 2 stops operating.

[0091] When the temperature of the cooling medium is greater than 70 degrees Celsius, the heat exchange capacity of the cooling medium is greatly reduced, making it difficult to effectively remove the heat generated by the functional unit 2 on the base plate 11 and the first side plate 12. In order to avoid the functional unit 2 from continuously heating up and causing thermal runaway when it cannot dissipate heat, the functional unit 2 can be directly controlled to stop operating, so as to eliminate the risk of thermal runaway of the functional unit 2 from the root.

[0092] In the above embodiments, when the cooling medium remains within the seventh preset threshold range for a first preset duration, the functional unit 2 can be controlled to operate at a third power, and the air guide assembly 3 can be controlled to operate continuously. This reduces the operating power of the functional unit 2 to slow down its temperature rise, while the air guide assembly 3 can also quickly lower the temperature inside the housing 1. When the temperature of the cooling medium exceeds the first preset threshold range, the cooling medium is unable to effectively remove the heat generated by the functional unit 2 on the bottom plate 11 and the first side plate 12. At this time, the functional unit 2 can be controlled to stop operating to avoid thermal runaway of the functional unit 2, further improving the safety of the frequency converter control box.

[0093] In some embodiments, such as Figure 7 As shown, the control method further includes steps S510 and S520.

[0094] Step S510: Obtain the user's operation instruction for switching function unit 2.

[0095] The operation instructions for the aforementioned switching function unit 2 can be voice commands issued by the user through voice interaction, or control commands generated by the user through touching physical buttons.

[0096] Step S520: Based on the operation command, control the air guide assembly 3 to deliver airflow to the base plate 11 or the first side plate 12 where the selected functional unit 2 is located for a second preset duration.

[0097] like Figure 8As shown, the variable frequency control box can also have a cold source pre-cooling mode. The second preset duration can be 10 seconds. After receiving the user's operation command to select and switch function unit 2, the variable frequency control box can be in the cold source pre-cooling mode. At this time, the control air guide assembly 3 continuously delivers airflow to the base plate 11 or the first side plate 12 where the selected function unit 2 is located for 10 seconds to pre-lower the air temperature around the selected function unit 2.

[0098] In the above embodiment, after obtaining the user's operation command to select and switch function unit 2, the air guide component 3 can be controlled to deliver airflow to the base plate 11 or the first side plate 12 where the selected function unit 2 is located for a second preset duration. Thus, before the selected function unit 2 is put into full power load, not only can the air temperature around the selected function unit 2 be reduced in advance, but the equivalent heat dissipation capacity of the base plate 11 or the first side plate 12 where the selected function unit 2 is located can also be increased in advance. This alleviates the phenomenon of sudden increase in local heat caused by the instantaneous full load operation of function unit 2, and significantly reduces the temperature rise of the selected function unit 2.

[0099] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0100] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0101] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A variable frequency control box for a liquid cooling system of vehicle-mounted heating electronic devices, characterized in that, include: The housing has a bottom plate and a first side plate connected to each other, and the bottom plate and the first side plate each contain a cooling medium; Multiple functional units are provided, with at least one of the functional units respectively provided on the base plate and the first side plate; An air guiding assembly, comprising a first air guiding component and a second air guiding component, wherein the first air guiding component is disposed toward the base plate and is used to form an airflow blowing toward the base plate; The second air guide is disposed toward the first side plate to form an airflow that blows toward the first side plate.

2. The frequency converter control box for a liquid cooling system of vehicle-mounted heating electronic devices according to claim 1, characterized in that, The housing also includes a second side plate connected to the bottom plate. The second side plate is disposed opposite to the first side plate, and the first air guide and the second air guide are disposed at intervals on the second side plate.

3. The frequency converter control box for a liquid cooling system of vehicle-mounted heating electronic devices according to claim 1, characterized in that, The enclosure also includes a third side panel, on which at least one of the functional units is provided. The functional unit is connected to the bottom plate or the first side panel via a heat-conducting component.

4. The frequency converter control box for a liquid cooling system of vehicle-mounted heating electronic devices according to claim 1, characterized in that, A first suction component is provided on the base plate, which is used to cooperate with the first air guide component to form an airflow blowing toward the base plate; a second suction component is provided on the first side plate, which is used to cooperate with the second air guide component to form an airflow blowing toward the first side plate.

5. The frequency converter control box for a liquid cooling system of vehicle-mounted heating electronic devices according to claim 1, characterized in that, Each of the functional units is provided with a first temperature sensing element, which is used to collect first temperature information corresponding to the functional unit.

6. The frequency converter control box for a liquid cooling system of vehicle-mounted heating electronic devices according to claim 1, characterized in that, A second temperature sensor is provided on the top plate of the enclosure, and the second temperature sensor is used to collect the second temperature information of the enclosure.

7. A liquid cooling system for vehicle-mounted heating electronic devices, characterized in that, Including the frequency converter control box for liquid cooling systems of vehicle-mounted heat-generating electronic devices as described in any one of claims 1 to 6.

8. The liquid cooling system for vehicle-mounted heating electronic devices according to claim 7, characterized in that, The liquid cooling system for the vehicle-mounted heating electronic device also includes a circulating liquid supply component. The base plate and the first side plate are respectively provided with a liquid inlet and a liquid outlet. The circulating liquid supply component is used to supply cooling medium to the base plate or the first side plate through the liquid inlet and return it to the circulating liquid supply component through the liquid outlet.

9. The liquid cooling system for vehicle-mounted heating electronic devices according to claim 8, characterized in that, The circulating liquid supply assembly includes a liquid distribution manifold and a liquid return manifold. The inlet of the liquid distribution manifold is connected to the liquid supply source, and the outlet of the liquid distribution manifold is connected to the liquid inlet on the base plate and the first side plate, respectively. The inlet of the liquid return manifold is connected to the liquid outlet on the base plate and the first side plate, respectively, and the outlet of the liquid return manifold is connected to the liquid return source.

10. The liquid cooling system for vehicle-mounted heating electronic devices according to claim 9, characterized in that, A third temperature sensor is provided on the liquid distribution manifold, which is used to collect the third temperature information of the cooling medium flowing through the liquid distribution manifold.

11. A control method for a variable frequency control box for a liquid cooling system of an on-board heating electronic device, characterized in that, The control method, applied to the variable frequency control box for a liquid cooling system of an on-board heating electronic device as described in any one of claims 1 to 6, comprises: The temperature of the cooling medium flowing into the base plate and the first side plate is obtained; When the temperature of the cooling medium is within a first preset threshold range, temperature information related to the variable frequency control box is determined. The temperature information includes at least one of the following: temperature information of the cooling medium, temperature information inside the box, and temperature information of the functional unit. The operating status of the air guide assembly and / or the functional unit is controlled based on the temperature information.

12. The control method for the variable frequency control box of the liquid cooling system for vehicle-mounted heating electronic devices according to claim 11, characterized in that, The step of controlling the operating state of the air guide assembly and / or the functional unit based on the temperature information specifically includes: When the temperature of the cooling medium is within a second preset threshold range and the temperature inside the box is within a third preset threshold range, the air guide assembly is controlled to stop operating and the functional unit is controlled to operate at a first power, wherein the second preset threshold range is less than the first preset threshold range. When the temperature of the cooling medium is within the fourth preset threshold range, or when the temperature inside the box is greater than the third preset threshold range, the air guide assembly is controlled to operate until the temperature inside the box drops to the target temperature. The second preset threshold range, the fourth preset threshold range, and the first preset threshold range increase sequentially.

13. The control method for the variable frequency control box of the liquid cooling system for vehicle-mounted heating electronic devices according to claim 12, characterized in that, The control method for controlling the operating state of the air guide assembly and / or the functional unit based on the temperature information further includes: When the temperature of the functional unit is greater than or equal to a fifth preset threshold, the functional unit is controlled to operate at a second power, wherein the first power is greater than the second power; When the temperature of the functional unit is greater than or equal to the sixth preset threshold, the functional unit is controlled to stop operating and other functional units are controlled to start operating. The sixth preset threshold is greater than the fifth preset threshold.

14. The control method for the variable frequency control box of the liquid cooling system for vehicle-mounted heating electronic devices according to claim 13, characterized in that, The control method for controlling the operating state of the air guide assembly and / or the functional unit based on the temperature information further includes: If the temperature of the cooling medium remains within a seventh preset threshold range for a first preset duration, the functional unit is controlled to operate at a third power, and the air guide assembly is controlled to operate, with the second power, the third power, and the first power increasing sequentially. If the temperature of the cooling medium exceeds the first preset threshold range, the functional unit is controlled to stop operating.

15. The control method for the variable frequency control box of the liquid cooling system for vehicle-mounted heating electronic devices according to claim 11, characterized in that, The control method further includes: Obtain the user's operation command to switch the functional unit; Based on the operation command, the air guide assembly is controlled to deliver airflow to the base plate or the first side plate where the selected functional unit is located for a second preset duration.

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