Automobile control and computing power module liquid cooling heat dissipation device

Abstract

The utility model discloses a kind of automobile control and computing power module liquid cooling heat dissipation equipment, comprising: water chiller, for providing coolant;Multi-channel coolant switching cabinet is connected with the water chiller by pipeline;The multi-channel coolant switching cabinet includes: main channel, inlet end connects water chiller outlet, main switch valve, main flowmeter and one-way check valve are sequentially arranged along the flow direction of coolant;At least 6 cooling channels are connected in parallel to the outlet end of the main channel, branch flowmeter, electric control valve and drain switching valve are sequentially arranged on each cooling channel.The temperature detection and flow rate control of coolant are integrated, the circulation speed of coolant can be intelligently adjusted according to the real-time temperature of the measured product, and the temperature curve of the product is accurately controlled, the temperature stability of the product during testing is ensured, the accuracy and reliability of testing can be significantly improved, and the service life of the product can also be extended, and the overall performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of radiator technology, and in particular to a liquid cooling heat dissipation device for automotive control and computing modules. Background Technology

[0002] With the rapid development of electric vehicle technology, the demand for durability testing of high-power vehicle control and computing modules (such as intelligent driving controllers and intelligent cockpit controllers) during the research and development phase is increasing. These high-power components generate a lot of heat during operation. If heat cannot be dissipated in time, it will not only affect the accuracy of test results, but may also cause irreversible damage to the components themselves.

[0003] In existing technologies, air cooling and water cooling are the two main methods used to address the heat dissipation problem of high-power automotive control and computing modules. Air cooling initially saw some application due to its simple structure and low cost. However, with the continuous increase in component power, air cooling has become insufficient to meet the heat dissipation requirements of high-power components, especially during durability testing, where its low heat dissipation efficiency is particularly prominent. In contrast, water cooling, due to its highly efficient heat conduction performance, has gradually become the mainstream solution for heat dissipation of high-power components. While standard water chillers on the market can provide water cooling for test products, they still have many shortcomings in practical applications.

[0004] 1. After water cooling is completed, the coolant inside the product cannot be effectively drained, resulting in water accumulation inside the product, which may cause safety hazards such as short circuits.

[0005] 2. Existing water chillers lack the function of dynamically adjusting the coolant flow rate according to the real-time temperature of the product, making it difficult to accurately control the temperature profile of the product and affecting the accuracy of test results.

[0006] 3. Monitoring and calibrating the multi-channel coolant flow rate is also a major challenge, making it difficult to conduct efficient and accurate heat dissipation tests on multiple products simultaneously. Summary of the Invention

[0007] This invention overcomes the shortcomings of the prior art and provides a liquid cooling heat dissipation device for automotive control and computing modules.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is: a liquid cooling heat dissipation device for automotive control and computing modules, comprising:

[0009] Water chillers are used to supply coolant;

[0010] A multi-channel coolant switching cabinet is connected to the water chiller via pipelines;

[0011] The multi-channel coolant switching cabinet includes:

[0012] The main channel is connected to the outlet of the water chiller at the inlet end, and is equipped with a main switch valve, a main flow meter and a one-way check valve in sequence along the flow direction of the coolant.

[0013] At least six cooling channels are connected in parallel to the outlet of the main channel. Each cooling channel is equipped with a branch flow meter, an electronically controlled valve and a drain switching valve in sequence, and the end is connected to the test product interface.

[0014] The coolant control box is equipped with a temperature sensor and a flow rate controller connected to the electronically controlled valve;

[0015] The coolant discharge system includes a compressed air source and an electrically controlled switching valve. The input end of the electrically controlled switching valve is connected to the compressed air source and the main channel, respectively, and the output end is connected to the coolant discharge switching valve.

[0016] In a preferred embodiment of this utility model, the multi-channel coolant switching cabinet further includes a liquid collection tray, which is disposed below the test product interface.

[0017] In a preferred embodiment of the present invention, the multi-channel coolant switching cabinet further includes: an observation panel, which is provided with a horizontal liquid level observation pipe communicating with the liquid accumulation pan and a vertical water tank liquid level observation pipe communicating with the water chiller water tank.

[0018] In a preferred embodiment of this utility model, the flow rate controller is a PLC controller, which adjusts the opening degree of the electrically controlled valve according to the temperature sensor detection value.

[0019] In a preferred embodiment of this utility model, the drain switching valve is a three-way solenoid valve, with its first interface connected to the electrically controlled valve, its second interface connected to the test product interface, and its third interface connected to the electrically controlled switching valve.

[0020] In a preferred embodiment of this utility model, the electrically controlled switching valve is a two-position three-way solenoid valve.

[0021] In a preferred embodiment of this invention, a manual ball valve is provided at the test product interface of each of the cooling channels.

[0022] In a preferred embodiment of this invention, a pressure reducing valve is provided at the outlet of the compressed air source.

[0023] In a preferred embodiment of this utility model, a needle valve is provided between the manual ball valve and the branch flow meter.

[0024] In a preferred embodiment of this invention, the pipeline of the coolant discharge system and the main channel are switched via the electronically controlled switching valve.

[0025] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0026] (1) This utility model provides a liquid cooling heat dissipation device for automotive control and computing modules. By integrating coolant temperature detection and flow rate control, it realizes real-time monitoring of coolant temperature and dynamic adjustment of flow rate. It can intelligently adjust the circulation speed of coolant according to the real-time temperature of the product being tested, thereby accurately controlling the temperature curve of the product, ensuring the temperature stability of the product during the testing process, and effectively avoiding test result deviations caused by temperature fluctuations. Compared with the shortcomings of the prior art that cannot dynamically adjust the coolant flow rate according to the product temperature, it can significantly improve the accuracy and reliability of testing, and also help extend the service life of the product and improve its overall performance.

[0027] (2) In this utility model, by dividing the main channel into multiple independent cooling channels, each cooling channel is equipped with a branch flow meter, an electric control valve and a drain switching valve, so that it can support the simultaneous connection of multiple test products for parallel testing. This changes the limitation of traditional standard water chillers that can only dissipate heat in a single channel, significantly improves testing efficiency, and thus meets the needs of simultaneous testing of multiple products with one set of equipment, reduces the procurement and maintenance costs of multiple single-channel equipment, and further optimizes the resource investment in R&D testing.

[0028] (3) In this utility model, by integrating the coolant discharge system and controlling the electric switching valve by PLC, the channel that needs to be drained is switched from the cooling channel to the channel connected to the compressed air source. The residual coolant inside the product and the pipeline is purged by the compressed air source, and the purging effect is observed in real time by the horizontal liquid level observation tube. This can effectively solve the problem that the existing water cooling equipment cannot drain the liquid inside the product, avoid the risk of corrosion caused by the residual coolant to the product, and ensure the environmental consistency between different test batches, further improving the reliability and repeatability of the test process. Attached Figure Description

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0030] Figure 1 This is a three-dimensional structural diagram of a liquid-cooled heat dissipation device according to a preferred embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the connection structure between the multi-channel coolant switching cabinet and the water chiller in a preferred embodiment of this utility model;

[0032] In the diagram: 1. Water chiller; 11. Water tank; 2. Multi-channel coolant switching cabinet; 21. Main channel; 22. Main switch valve; 23. Main flow meter; 24. Cooling channel; 25. Branch flow meter; 26. Electrically controlled valve; 27. Drain switching valve; 3. Coolant control box; 4. Coolant discharge system; 41. Compressed air source; 42. Electrically controlled switching valve; 5. Manual ball valve. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "setup," and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] like Figure 1 and Figure 2 As shown, a liquid cooling heat dissipation device for automotive control and computing modules includes:

[0036] Water chiller 1, used to provide coolant.

[0037] It should be noted that the preferred model of water chiller 1 is LX-3000F.

[0038] Specifically, the water chiller 1 provides coolant for the entire liquid cooling heat dissipation equipment. By stably outputting coolant at a suitable temperature and flow rate, it provides a foundation for the subsequent multi-channel coolant switching cabinet 2 to dissipate heat from the computing module, thereby ensuring a continuous supply of coolant and enabling the heat dissipation process to continue, thus providing a prerequisite for the stable operation of the entire heat dissipation system.

[0039] The multi-channel coolant switching cabinet 2 is connected to the water chiller 1 via pipelines. The multi-channel coolant switching cabinet 2 includes: a main channel 21, the inlet end of which is connected to the outlet of the water chiller 1, and a main switch valve 22, a main flow meter 23, and a one-way check valve are arranged sequentially along the coolant flow direction; at least 6 cooling channels 24 are connected in parallel to the outlet end of the main channel 21, and each cooling channel 24 is arranged sequentially with a branch flow meter 25, an electrically controlled valve 26, and a drain switching valve 27, and the end is connected to the test product interface.

[0040] It should be noted that the drain switching valve 27 is a three-way solenoid valve, with its first interface connected to the electrically controlled valve 26, its second interface connected to the test product interface, and its third interface connected to the electrically controlled switching valve 42.

[0041] Specifically, the main switch valve 22 controls the on / off state of the main channel 21 for maintenance, the main flow meter 23 monitors the total flow to ensure stable supply, and the one-way check valve prevents coolant backflow. Each of the six parallel cooling channels 24 is equipped with a branch flow meter 25 (monitoring the flow of a single channel), an electrically controlled valve 26 (adjusting the flow rate), and a drain switching valve 27 (a three-way solenoid valve that can switch between coolant and compressed air channels). During operation, the main channel 21 is controlled by the main switch valve 22, the main flow meter 23 monitors the total flow, and after the one-way check valve prevents backflow, the coolant is distributed to the six cooling channels 24. The flow rate of each channel is monitored in real time by the branch flow meter 25, the electrically controlled valve 26 dynamically adjusts the flow rate, and the drain switching valve 27 connects to the coolant channel during testing and switches to the compressed air channel at the end of the test. This enables simultaneous heat dissipation of multiple products and subsequent draining, improves testing efficiency, and ensures independent control of each channel, solving the problem of low efficiency in traditional single-channel equipment.

[0042] Furthermore, each cooling channel 24 is equipped with a manual ball valve 5 at the test product interface. The manual ball valve 5 is used for manual intervention to open and close the channel, and to isolate the channel to prevent leakage when debugging or replacing the product. In actual use, the manual ball valve 5 is kept open when the equipment is running to ensure that the coolant flows through the product. When replacing the product or performing maintenance, the supply is manually shut off to prevent coolant from overflowing, thereby improving the convenience of operation and the safety of maintenance.

[0043] Furthermore, a needle valve is installed between the manual ball valve 5 and the branch flow meter 25. The needle valve finely adjusts the small flow rate through the gap between the valve disc and the valve seat to calibrate the consistency of the flow rate in each channel. During use, at the initial stage of equipment startup, the opening of the needle valve is manually adjusted in conjunction with the monitoring of the branch flow meter 25 to make the flow rate in each channel tend to be consistent. Subsequently, only the flow rate needs to be controlled by the solenoid valve 26 to maintain stability, which solves the problem of inconsistent flow rates in multiple channels and improves the reliability of test results.

[0044] In some implementations, the multi-channel coolant switching cabinet 2 further includes a liquid collection tray located below the test product interface.

[0045] Specifically, the sump tray collects leaked coolant during testing and residual liquid from the drainage stage. The liquid collects along the tray surface and is then discharged, preventing dripping that could contaminate or corrode the equipment, thus ensuring a clean and safe operating environment.

[0046] In some embodiments, the multi-channel coolant switching cabinet 2 further includes: an observation panel, which is provided with a horizontal liquid level observation tube communicating with the liquid accumulation pan and a vertical water tank 11 liquid level observation tube communicating with the water tank 11 of the water chiller 1.

[0047] Specifically, the horizontal liquid level observation tube and the vertical water tank 11 liquid level observation tube are made of transparent plastic tubes, which are connected to the liquid collection tray and the water tank 11 of the water chiller 1 respectively through the principle of communicating vessels. In use, the horizontal liquid level observation tube displays the drainage progress in real time (the purging is completed when the liquid disappears), and the vertical water tank 11 liquid level observation tube displays the coolant level in the water tank 11. Operators can intuitively monitor through the transparent tubes and quickly judge the drainage effect and coolant level, thereby improving the visibility of operation and maintenance efficiency.

[0048] The coolant control box 3 is equipped with a temperature sensor and a flow rate controller connected to the electronically controlled valve 26.

[0049] It should be noted that the preferred model of the coolant control box 3 is JULABO PRESTO A45; the flow rate controller is a PLC controller, which adjusts the opening of the electric control valve 26 according to the temperature sensor detection value. That is, the flow rate controller is implemented by a programmable controller, which is existing technology and can be implemented by those skilled in the art through programming. It is common knowledge in the field, so this application will not explain the control method and module in detail, and will not elaborate on them here.

[0050] Specifically, the coolant control box 3 monitors the coolant temperature in real time through a temperature sensor, and the flow rate controller adjusts the opening of the electronic control valve 26 in a timely manner according to temperature changes, thereby controlling the coolant flow rate. This enables precise control of the temperature of the test product, ensuring that the product remains within a suitable temperature range under different operating conditions, thus improving the accuracy of the test and the reliability of the product.

[0051] The coolant discharge system 4 includes a compressed air source 41 and an electrically controlled switching valve 42. The input end of the electrically controlled switching valve 42 is connected to the compressed air source 41 and the main channel 21, respectively, and the output end is connected to the drain switching valve 27.

[0052] It should be noted that the electrically controlled switching valve 42 is a two-position three-way solenoid valve; the outlet of the compressed air source 41 is equipped with a pressure reducing valve, and the pressure range of the compressed air source 41 is 0.4-0.6MPa; the pipeline of the coolant discharge system 4 and the main channel 21 are switched through the electrically controlled switching valve 42.

[0053] Specifically, the compressed air is adjusted to 0.4-0.6MPa by the pressure reducing valve (balancing purging force and safety). During the testing phase, the electrically controlled switching valve 42 connects the main channel 21 and the drain switching valve 27. After the test, it switches to connect to the compressed air source 41. During operation, after the test, the electrically controlled switching valve 42 switches the drain switching valve 27 interface from the main channel 21 to the compressed air source 41. Compressed air enters the channel to purge the residual coolant to the sump, solving the problem of traditional equipment being unable to drain the coolant, avoiding residual liquid corrosion of the product, and ensuring environmental consistency between test batches.

[0054] When this utility model is in use, the water chiller 1 first provides coolant with stable temperature and flow rate, which is then transported through pipeline to the main channel 21 of the multi-channel coolant switching cabinet 2. The main switch valve 22 on the main channel 21 controls the on / off state for maintenance. The main flow meter 23 monitors the total flow rate to ensure stable supply. After the one-way check valve prevents coolant backflow, the coolant is diverted to 6 cooling channels 24 connected in parallel at the outlet of the main channel 21. The branch flow meter 25 on each cooling channel 24 monitors the flow rate of a single channel in real time. At the initial stage of equipment startup, the needle valve is manually adjusted to adjust the gap between the valve disc and the valve seat, and the flow meter 25 is used to calibrate the consistency of the flow rate of each channel.

[0055] Under the control of the coolant control box 3, the electric valve 26 dynamically adjusts its opening degree according to the real-time temperature of the coolant detected by the temperature sensor, thereby changing the coolant flow rate and controlling the temperature curve of the tested product. The manual ball valve 5 at the interface of the test product remains open during equipment operation to ensure that the coolant flows through the product. When replacing the product or performing maintenance, it is manually closed to isolate the channel and prevent leakage.

[0056] After the test is completed, the coolant discharge system 4 is started: the compressed air source 41 is adjusted to 0.4-0.6MPa through the pressure reducing valve, and the electronically controlled switching valve 42 switches the interface of the drain switching valve 27 from the main channel 21 to the compressed air source 41. The compressed air enters the cooling channel 24 to blow away the residual coolant inside the product and the pipes to the liquid collection pan below.

[0057] Operators observe the drainage progress in real time through the horizontal liquid level observation tube (connected to the sump) on the observation panel (purge is complete when the liquid disappears), and monitor the coolant level in the vertical water tank 11 (connected to water tank 11 of the water chiller) through the liquid level observation tube, ensuring thorough drainage and sufficient coolant supply. The entire process, through the coordinated work of multiple components, achieves simultaneous heat dissipation of multiple products, precise temperature control, residual liquid discharge, and visualization of operating status, ensuring the efficiency, accuracy, and reliability of the test.

[0058] Based on the above description and the preferred embodiments of this utility model, it will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A liquid cooling heat dissipation device for automotive control and computing modules, characterized in that, include: Water chiller (1), used to provide coolant; A multi-channel coolant switching cabinet (2) is connected to the water chiller (1) via pipelines; The multi-channel coolant switching cabinet (2) includes: The main channel (21) is connected to the outlet of the water chiller (1) at the inlet end, and is equipped with a main switch valve (22), a main flow meter (23) and a one-way check valve in sequence along the flow direction of the coolant; At least six cooling channels (24) are connected in parallel to the outlet of the main channel (21). Each cooling channel (24) is provided with a branch flow meter (25), an electric control valve (26) and a drain switching valve (27) in sequence, and the end is connected to the test product interface. The coolant control box (3) is equipped with a temperature sensor and a flow rate controller connected to the electronically controlled valve (26); The coolant discharge system (4) includes a compressed air source (41) and an electronically controlled switching valve (42). The input end of the electronically controlled switching valve (42) is connected to the compressed air source (41) and the main channel (21), respectively, and the output end is connected to the drain switching valve (27).

2. The liquid cooling heat dissipation device for automotive control and computing modules according to claim 1, characterized in that: The multi-channel coolant switching cabinet (2) also includes: A liquid collection tray is located below the interface of the test product. The observation panel is equipped with a horizontal liquid level observation tube that communicates with the liquid accumulation plate and a vertical water tank (11) liquid level observation tube that communicates with the water tank (11) of the water chiller (1).

3. The liquid cooling heat dissipation device for automotive control and computing modules according to claim 1, characterized in that: The drain switching valve (27) is a three-way solenoid valve, with its first interface connected to the electrically controlled valve (26), its second interface connected to the test product interface, and its third interface connected to the electrically controlled switching valve (42).

4. The liquid cooling heat dissipation device for automotive control and computing modules according to claim 1, characterized in that: The electrically controlled switching valve (42) is a two-position three-way solenoid valve.

5. The liquid cooling heat dissipation device for automotive control and computing modules according to claim 1, characterized in that: The flow rate controller is a PLC controller, which adjusts the opening of the electrically controlled valve (26) according to the temperature sensor detection value.

6. The liquid cooling heat dissipation device for automotive control and computing modules according to claim 1, characterized in that: Each of the cooling channels (24) is equipped with a manual ball valve (5) at the test product interface.

7. The liquid cooling heat dissipation device for automotive control and computing modules according to claim 6, characterized in that: A needle valve is provided between the manual ball valve (5) and the branch flow meter (25).

8. The liquid cooling heat dissipation device for automotive control and computing modules according to claim 1, characterized in that: The outlet of the compressed air source (41) is equipped with a pressure reducing valve.

9. The liquid cooling heat dissipation device for automotive control and computing modules according to claim 1, characterized in that: The pipeline of the coolant discharge system (4) and the main channel (21) are switched via the electronically controlled switching valve (42).

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