Control method and system based on liquid cooling heat dissipation module

Abstract

The invention relates to a control method based on a liquid cooling heat dissipation module. The control method comprises the steps that the liquid temperature of a liquid inlet and the liquid temperature of a liquid outlet of the liquid cooling heat dissipation module are collected; the liquid temperature of the liquid inlet is divided into a plurality of intervals, and the output power of the liquid cooling heat dissipation module is controlled in each interval according to different voltage output ranges, different cooling liquid flows and different design temperature differences. The invention further relates to a control system of the liquid cooling heat dissipation module. According to the control method and system of the liquid cooling heat dissipation module, independent judgment and protection of the liquid cooling heat dissipation module are achieved through the temperature difference between the liquid inlet and the liquid outlet of the liquid cooling heat dissipation module, the scheme has the advantages of being easy to achieve and high in reliability, the loss of multi-output power can be reduced to the maximum extent, and the reliability of the system is improved. And the output power is provided to the maximum.

Description

Technical Field

[0001] The present invention relates to the field of liquid cooling and heat dissipation modules, and more specifically, to a control method and system based on the liquid cooling and heat dissipation module. Background Art

[0002] For the charging system composed of liquid-cooled charging pile modules, the entire system adopts a centralized heat dissipation method, that is, the entire system has only one total cold source device, which provides circulating coolant for the liquid-cooled modules that make up the system, and uses the flow of coolant to take away the heat generated by the charging module to achieve the purpose of cooling the liquid-cooled module. Therefore, the heat dissipation effect of the liquid-cooled charging pile module depends entirely on the performance of the cold source of the entire system. If the cold source is abnormal and cannot provide sufficient heat dissipation capacity for the module, resulting in the module's heat cannot be exported in time, it will bring the risk of damage to the liquid cooling module, so appropriate protection measures need to be added.

[0003] The current common solution is that the system collects the working status information of the cold source system and determines whether the cold source is working abnormally. When the cold source is found to be working abnormally, a protection instruction is sent to the liquid cooling charging pile module through communication to achieve the protection effect of the liquid cooling charging pile module. However, this protection method has the following defects: the cold source provides the system with total flow information, and the information matching is poor. Therefore, not only is the solution complex, the reliability is low, and the power loss is large, but it is also impossible to independently judge and protect each liquid cooling module. Summary of the invention

[0004] The technical problem to be solved by the present invention is that, in view of the above-mentioned defects of the prior art, a control method and system for a liquid-cooled heat dissipation module are provided, which realizes independent judgment and protection of the liquid-cooled heat dissipation module by utilizing the temperature difference between the liquid inlet and the liquid outlet of the liquid-cooled heat dissipation module. The scheme is simple to implement and has the characteristics of high reliability. It can minimize the loss of multiple output power and provide maximum output power.

[0005] The technical solution adopted by the present invention to solve the technical problem is: constructing a control method based on a liquid cooling heat dissipation module, comprising:

[0006] Step S1, collecting the liquid temperature of the liquid inlet and the liquid temperature of the liquid outlet of the same liquid cooling module;

[0007] Step S2, dividing the liquid temperature at the liquid inlet into a plurality of intervals, and controlling the output power of the liquid cooling module in each interval according to different voltage output ranges, different coolant flow rates and different designed temperature differences;

[0008] The designed temperature difference is the temperature difference between the liquid temperature at the liquid inlet and the liquid temperature at the liquid outlet.

[0009] In the control method based on the liquid cooling heat dissipation module of the present invention, the step S2 further includes:

[0010] Step S21, designing a first temperature interval and a second temperature interval;

[0011] Step S22: when it is determined that the liquid temperature at the liquid inlet of the liquid cooling heat dissipation module is in the first temperature interval, controlling the output power of the liquid cooling heat dissipation module based on the current coolant flow rate, different voltage output ranges in the first temperature interval, and different designed temperature differences;

[0012] Step S23: When it is determined that the liquid temperature of the liquid inlet of the liquid cooling heat dissipation module is in the second temperature range, the output power of the liquid cooling heat dissipation module is controlled based on the current coolant flow, different voltage output ranges in the second temperature range and different designed temperature differences.

[0013] In the control method based on the liquid cooling heat dissipation module of the present invention, the step S22 further includes:

[0014] Step S221, determining whether the current coolant flow rate is greater than the flow upper limit, if so, not adjusting the output power, otherwise executing step S222;

[0015] Step S222, when it is determined that the current output voltage is within the first voltage range and the current coolant flow rate is within the first flow rate range, executing step S223; when it is determined that the current output voltage is within the second voltage range and the current coolant flow rate is within the second flow rate range, executing step S224;

[0016] Step S223: when it is determined that the current temperature difference is greater than the first set temperature difference, the output power is not adjusted and an alarm signal is sent; when it is determined that the current temperature difference is greater than the second set temperature difference, the output power is controlled to start to decrease linearly; when it is determined that the current temperature difference is greater than the third set temperature difference, the output power is controlled to decrease linearly to the first set output power according to the first slope; when it is determined that the current temperature difference is greater than the fourth set temperature difference, the output power is controlled to be reduced to zero; when it is determined that the current temperature difference is less than the fifth set temperature difference, the output power is controlled to start to rise linearly according to the second slope until the current temperature difference is less than the sixth set temperature difference and the maximum output power is restored;

[0017] S224. When it is determined that the current temperature difference is greater than the seventh set temperature difference, the output power is not adjusted and an alarm signal is sent; when it is determined that the current temperature difference is greater than the eighth set temperature difference, the output power is controlled to drop directly to the second set output power; when it is determined that the current temperature difference is greater than the fourth set temperature difference, the output power is controlled to be reduced to zero; when it is determined that the current temperature difference is less than the ninth set temperature difference, the output power is controlled to be restored to the maximum output power.

[0018] In the control method based on the liquid cooling module of the present invention, in the step S223, the first slope K1 is:

[0019]

[0020] Wherein, N1 represents the ratio of the first set output power to the maximum output power, P omax represents the maximum output power, T3 represents the third set temperature difference, and T2 represents the second set temperature difference;

[0021] The second slope K2 is:

[0022]

[0023] Wherein, N1 represents the ratio of the first set output power to the maximum output power, P omax represents the maximum output power, T5 represents the fifth set temperature difference, and T6 represents the sixth set temperature difference;

[0024] The first set temperature difference < the second set temperature difference < the third set temperature difference < the fourth set temperature difference;

[0025] The fifth set temperature difference>the sixth set temperature difference.

[0026] In the control method based on the liquid cooling module described in the present invention, in step S224, the ninth set temperature difference < the seventh set temperature difference < the eighth set temperature difference < the fourth set temperature difference; the second set output power is greater than the first set output power.

[0027] In the control method based on the liquid cooling heat dissipation module of the present invention, the step S23 further includes:

[0028] Step S231, determining whether the current coolant flow rate is greater than the flow rate upper limit, if so, not adjusting the output power, otherwise executing step S232;

[0029] Step S232, when it is determined that the current output voltage is within the first voltage range and the current coolant flow rate is within the third flow rate range, execute step S233; when it is determined that the current output voltage is within the second voltage range and the current coolant flow rate is within the fourth flow rate range, execute step S234;

[0030] Step S233: when it is determined that the current temperature difference is greater than the tenth set temperature difference, the output power is not adjusted and an alarm signal is sent; when it is determined that the current temperature difference is greater than the eleventh set temperature difference, the output power is controlled to start to decrease linearly; when it is determined that the current temperature difference is greater than the twelfth set temperature difference, the output power is controlled to decrease linearly to the third set output power according to the third slope; when it is determined that the current temperature difference is greater than the thirteenth set temperature difference, the output power is controlled to be reduced to zero; when it is determined that the current temperature difference is less than the fourteenth set temperature difference, the output power is controlled to start to rise linearly according to the fourth slope until the current temperature difference is less than the fifteenth set temperature difference and the maximum output power is restored;

[0031] S234. When it is determined that the current temperature difference is greater than the sixteenth set temperature difference, the output power is not adjusted and an alarm signal is sent; when it is determined that the current temperature difference is greater than the seventeenth set temperature difference, the output power is controlled to start to decrease linearly; when it is determined that the current temperature difference is greater than the eighteenth set temperature difference, the output power is controlled to decrease linearly to the fifth set output power according to the fifth slope; when it is determined that the current temperature difference is greater than the nineteenth set temperature difference, the output power is controlled to be reduced to zero; when it is determined that the current temperature difference is less than the twentieth set temperature difference, the output power is controlled to start to rise linearly according to the sixth slope until the current temperature difference is less than the twenty-first set temperature difference and the maximum output power is restored.

[0032] In the control method based on the liquid cooling module of the present invention, in the step S233, the third slope K3 is:

[0033]

[0034] Wherein, N3 represents the ratio of the third set output power to the maximum output power, P omax Indicates the maximum output power, T12 indicates the twelfth set temperature difference, and T11 indicates the eleventh set temperature difference;

[0035] The fourth slope K4 is:

[0036]

[0037] Wherein, N3 represents the ratio of the third set output power to the maximum output power, P omax Indicates the maximum output power, T14 indicates the fourteenth set temperature difference, and T15 indicates the fifteenth set temperature difference;

[0038] The tenth set temperature difference < the eleventh set temperature difference < the twelfth set temperature difference < the thirteenth set temperature difference;

[0039] The fourteenth set temperature difference>the fifteenth set temperature difference. In the control method based on the liquid cooling heat dissipation module of the present invention, in the step S234, the fifth slope K5 is:

[0040]

[0041] Wherein, N5 represents the ratio of the fifth set output power to the maximum output power, P omax Indicates the maximum output power, T18 indicates the eighteenth set temperature difference, and T17 indicates the seventeenth set temperature difference;

[0042] The sixth slope K6 is:

[0043]

[0044] Wherein, N5 represents the ratio of the fifth set output power to the maximum output power, P omax represents the maximum output power, T21 represents the twentieth set temperature difference, and T21 represents the twenty-first set temperature difference;

[0045] The sixteenth set temperature difference < the seventeenth set temperature difference < the eighteenth set temperature difference < the nineteenth set temperature difference;

[0046] The 20th set temperature difference> the 21st set temperature difference.

[0047] In the control method based on the liquid cooling heat dissipation module of the present invention, the step S2 further includes: S24, designing a third temperature interval, and when the temperature difference between the liquid temperature of the liquid inlet and the liquid temperature of the liquid outlet of the liquid cooling heat dissipation module is within the third temperature interval, determining that the system fails; or

[0048] In step S1, a group of liquid inlet liquid temperatures and liquid outlet liquid temperatures of each of the multiple liquid-cooling heat dissipation modules are collected respectively; in step S2, for each liquid-cooling heat dissipation module, the corresponding liquid inlet liquid temperature is divided into several intervals, and in each interval, the output power of each liquid-cooling heat dissipation module is controlled simultaneously or in time-sharing manner according to the different voltage output ranges, different coolant flows and different designed temperature differences corresponding to each liquid-cooling heat dissipation module.

[0049] The technical solution adopted by the present invention to solve the technical problem is: construct a control system for a liquid cooling and heat dissipation module, including a plurality of liquid cooling and heat dissipation modules and a control device; the control device includes temperature sensors respectively arranged at the liquid outlet and the liquid inlet of each liquid cooling and heat dissipation module, and a controller in communication with the temperature sensor;

[0050] The temperature sensor is used based on the liquid temperature of the liquid inlet and the liquid temperature of the liquid outlet of each liquid cooling heat dissipation module;

[0051] The controller is used to divide the liquid temperature of the liquid inlet corresponding to each liquid-cooling heat dissipation module into several intervals, and in each interval, control the output power of each liquid-cooling heat dissipation module simultaneously or in a time-sharing manner according to the different voltage output ranges, different coolant flows and different designed temperature differences corresponding to each liquid-cooling heat dissipation module.

[0052] In the control system of the liquid-cooled heat dissipation module described in the present invention, the controller is further used to design a first temperature interval and a second temperature interval; when it is determined that the liquid temperature at the liquid inlet of the liquid-cooled heat dissipation module is in the first temperature interval, the output power of the liquid-cooled heat dissipation module is controlled based on the current coolant flow rate, different voltage output ranges in the first temperature interval and different designed temperature differences; when it is determined that the liquid temperature at the liquid inlet of the liquid-cooled heat dissipation module is in the second temperature interval, the output power of the liquid-cooled heat dissipation module is controlled based on the current coolant flow rate, different voltage output ranges in the second temperature interval and different designed temperature differences.

[0053] In the control system of the liquid cooling module described in the present invention, the controller is further used to perform the following steps: S221, determine whether the current coolant flow rate is greater than the flow upper limit, if so, do not adjust the output power, otherwise execute step S222; step S222, when it is determined that the current output voltage is within the first voltage range and the current coolant flow rate is within the first flow range, execute step S223, when it is determined that the current output voltage is within the second voltage range and the current coolant flow rate is within the second flow range, execute step S224; step S223, when it is determined that the current temperature difference is greater than the first set temperature difference, do not adjust the output power and send an alarm signal; when it is determined that the current temperature difference is greater than the second set temperature difference, control the output power to start linearly decreasing; when it is determined that the current temperature difference is greater than the second set temperature difference, When the temperature difference is greater than the third set temperature difference, the control output power is linearly decreased to the first set output power according to the first slope; when it is determined that the current temperature difference is greater than the fourth set temperature difference, the control output power is reduced to zero; when it is determined that the current temperature difference is less than the fifth set temperature difference, the control output power starts to linearly rise according to the second slope until the current temperature difference is less than the sixth set temperature difference and is restored to the maximum output power; S224, when it is determined that the current temperature difference is greater than the seventh set temperature difference, no output power adjustment is performed and an alarm signal is sent; when it is determined that the current temperature difference is greater than the eighth set temperature difference, the control output power is directly reduced to the second set output power; when it is determined that the current temperature difference is greater than the fourth set temperature difference, the control output power is reduced to zero; when it is determined that the current temperature difference is less than the ninth set temperature difference, the control output power is restored to the maximum output power.

[0054] In the control system of the liquid cooling module of the present invention, the controller is further used to perform the following steps: step S231, determining whether the current coolant flow rate is greater than the flow rate upper limit, if so, not adjusting the output power, otherwise executing step S232;

[0055] Step S232, when it is determined that the current output voltage is within the first voltage range and the current coolant flow rate is within the third flow rate range, execute step S233; when it is determined that the current output voltage is within the second voltage range and the current coolant flow rate is within the fourth flow rate range, execute step S234;

[0056] Step S233: when it is determined that the current temperature difference is greater than the tenth set temperature difference, the output power is not adjusted and an alarm signal is sent; when it is determined that the current temperature difference is greater than the eleventh set temperature difference, the output power is controlled to start to decrease linearly; when it is determined that the current temperature difference is greater than the twelfth set temperature difference, the output power is controlled to decrease linearly to the third set output power according to the third slope; when it is determined that the current temperature difference is greater than the thirteenth set temperature difference, the output power is controlled to be reduced to zero; when it is determined that the current temperature difference is less than the fourteenth set temperature difference, the output power is controlled to start to rise linearly according to the fourth slope until the current temperature difference is less than the fifteenth set temperature difference and the maximum output power is restored;

[0057] S234. When it is determined that the current temperature difference is greater than the sixteenth set temperature difference, the output power is not adjusted and an alarm signal is sent; when it is determined that the current temperature difference is greater than the seventeenth set temperature difference, the output power is controlled to start to decrease linearly; when it is determined that the current temperature difference is greater than the eighteenth set temperature difference, the output power is controlled to decrease linearly to the fifth set output power according to the fifth slope; when it is determined that the current temperature difference is greater than the nineteenth set temperature difference, the output power is controlled to be reduced to zero; when it is determined that the current temperature difference is less than the twentieth set temperature difference, the output power is controlled to start to rise linearly according to the sixth slope until the current temperature difference is less than the twenty-first set temperature difference and the maximum output power is restored.

[0058] The control method and system for the liquid-cooled heat dissipation module of the present invention realize independent judgment and protection of the liquid-cooled heat dissipation module by utilizing the temperature difference between the liquid inlet and the liquid outlet of the liquid-cooled heat dissipation module. Therefore, the solution is simple to implement and has higher reliability. In addition, by designing the output power based on different voltage output ranges, coolant flow rates and temperature differences within different temperature ranges, the loss of multiple output powers can be minimized and the output power can be provided to the maximum extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0060] Figure 1 is a flow chart of a first preferred embodiment of a control method for a liquid cooling heat dissipation module of the present invention;

[0061] Figure 2 It is a flow chart of a first preferred embodiment of a control system of a liquid cooling heat dissipation module of the present invention. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0063] The liquid cooling module has a coolant inlet and a coolant outlet. The inlet flows with low-temperature coolant cooled by the system cold source, and the outlet flows with high-temperature coolant heated by the liquid cooling module. When the liquid cooling module works at different output voltages and output powers, the loss of the liquid cooling module is different, and the heat generated is also different. Within the same or certain coolant flow range, the amount of heat absorbed by the coolant is different, resulting in a different temperature difference between the liquid temperature at the outlet and the liquid temperature at the inlet.

[0064] Since the output voltage of the charging module is very wide, ranging from 200Vdc to 1000Vdc, the conversion efficiency η of the module is different at each output voltage point when working at the maximum output power. When the output power Po is the same, the loss P generated by the entire module is also different. The relationship between the loss P of the entire module and the efficiency and output power P is as follows:

[0065]

[0066] Due to the different losses, the temperature difference between the water temperature at the water outlet and the water temperature at the water inlet is also different under the same heat dissipation conditions.

[0067] Based on this, the present invention proposes a control method for a liquid cooling heat dissipation module, wherein temperature sampling points are set at the liquid inlet and the liquid outlet of a liquid cooling module to collect the liquid temperature Tin at the liquid inlet and the liquid temperature Tout of the coolant at the liquid outlet. The entire liquid inlet temperature range is divided into a number of intervals, and the output power of the liquid cooling heat dissipation module is controlled in each interval according to different voltage output ranges, different coolant flow rates and different design temperature differences. The design temperature difference is the temperature difference between the liquid inlet temperature and the liquid outlet temperature. When the temperature difference between the inlet and outlet liquids is less than the set requirement, full power is output. When the temperature difference between the inlet and outlet liquids exceeds the set value, the output is derated according to the set output power. When the temperature difference between the inlet and outlet liquids continues to increase to the protection set value, the liquid cooling heat dissipation module will shut down the output and stop the output power to ensure the reliability of internal components. Therefore, the control method of the liquid-cooled heat dissipation module of the present invention is implemented to realize independent judgment and protection of the liquid-cooled heat dissipation module by utilizing the temperature difference between the liquid inlet and the liquid outlet of the liquid-cooled heat dissipation module. The solution is simple to implement and has the characteristics of high reliability. It can minimize the loss of multiple output power and provide maximum output power.

[0068] Figure 1 1 is a flow chart of a preferred embodiment of the control method of the liquid cooling heat dissipation module of the present invention. Figure 1 The control method of the liquid cooling module of the present invention is described as follows. Figure 1 As shown, in step S1, the liquid inlet liquid temperature and the liquid outlet liquid temperature of a certain liquid-cooling heat dissipation module are collected. In a preferred embodiment of the present invention, temperature sensors respectively arranged at the liquid inlet and the liquid outlet of the liquid-cooling heat dissipation module can be used to collect the real-time liquid inlet liquid temperature and the real-time liquid outlet liquid temperature of the liquid-cooling heat dissipation module as the liquid inlet liquid temperature and the liquid outlet liquid temperature. In another preferred embodiment of the present invention, the average value of the real-time liquid temperature within a period of time, such as 10s or 20s, can also be used as the liquid inlet liquid temperature and the liquid outlet liquid temperature. In other preferred embodiments of the present invention, the real-time liquid temperature is also collected first, then stored in a memory, and then the real-time liquid temperature is obtained from the memory. Here, any temperature sensor and / or liquid temperature collection method known in the art can be used, which all fall within the protection scope of the present invention.

[0069] In step S2, the liquid temperature at the liquid inlet is divided into several intervals, and in each interval, the output power of the liquid cooling module is controlled according to different voltage output ranges, different coolant flow rates and different designed temperature differences.

[0070] In a preferred embodiment of the present invention, when the temperature difference between the inlet and outlet liquid temperatures is less than the set requirement, full power is output; when the temperature difference between the inlet and outlet liquid temperatures exceeds the set value, the output is reduced according to the set output power; when the temperature difference between the inlet and outlet liquids continues to increase to the protection set value, the liquid cooling module will shut down the output and stop the output power to ensure the reliability of internal components.

[0071] In a further preferred embodiment of the present invention, a first temperature interval and a second temperature interval can be designed; when it is determined that the liquid temperature at the liquid inlet of the liquid-cooled heat dissipation module is in the first temperature interval, the output power of the liquid-cooled heat dissipation module is controlled based on the current coolant flow rate, different voltage output ranges in the first temperature interval, and different designed temperature differences; when it is determined that the liquid temperature at the liquid inlet of the liquid-cooled heat dissipation module is in the second temperature interval, the output power of the liquid-cooled heat dissipation module is controlled based on the current coolant flow rate, different voltage output ranges in the second temperature interval, and different designed temperature differences. By adopting different temperature interval divisions, different adjustments can be made to the output power in different temperature intervals, making the control of the output power more precise and reliable.

[0072] In a further preferred embodiment of the present invention, a first temperature interval, a second temperature interval and a third temperature interval can be designed. When it is determined that the liquid temperature at the liquid inlet of the liquid-cooled heat dissipation module is in the first temperature interval, the output power of the liquid-cooled heat dissipation module is controlled based on the current coolant flow rate, different voltage output ranges in the first temperature interval and different designed temperature differences; when it is determined that the liquid temperature at the liquid inlet of the liquid-cooled heat dissipation module is in the second temperature interval, the output power of the liquid-cooled heat dissipation module is controlled based on the current coolant flow rate, different voltage output ranges in the second temperature interval and different designed temperature differences; when the temperature difference between the liquid inlet temperature and the liquid outlet temperature of the liquid-cooled heat dissipation module is in the third temperature interval, a system failure is determined.

[0073] The specific control process under different temperature intervals is further illustrated below with examples. In a preferred embodiment of the present invention, a first temperature interval (25°C to 60°C) and a second temperature interval (0°C to 25°C) are set. Of course, in other preferred embodiments of the present invention, other temperature intervals can also be set, such as a first temperature interval (30°C to 50°C) and a second temperature interval (1°C to 28°C), which can be designed according to actual conditions. When it is determined that the liquid temperature Tin at the liquid inlet of the liquid-cooled heat dissipation module is in the first temperature interval (i.e., 25°C), the liquid inlet temperature Tin of the liquid-cooled heat dissipation module is within the first temperature interval (i.e., 25°C). <T in <60°C), the output power of the liquid cooling module is controlled based on the current coolant flow, different voltage output ranges in the first temperature interval and different designed temperature differences, and the specific steps are as follows.

[0074] In step S221, it is determined whether the current coolant flow rate L is greater than the flow rate upper limit, if so, the output power adjustment is not performed, otherwise the subsequent output power adjustment step is performed. For example, when the coolant flow rate L>8L / min, the output power adjustment is not performed, otherwise the subsequent output power adjustment step is triggered, that is, step S222 is executed.

[0075] In step S222, step S223 is executed when it is determined that the current output voltage is within the first voltage range and the current coolant flow rate is within the first flow rate range, and step S224 is executed when it is determined that the current output voltage is within the second voltage range and the current coolant flow rate is within the second flow rate range. For example, when the current output voltage is within the first voltage range of L300Vdc to L500Vdc and H550Vdc to H1000Vdc, and the coolant flow rate L is within the first flow rate range of 0L / min < L < 8L / min, step S223 is executed. Step S224 is executed when it is determined that the current output voltage is within the second voltage range of H500Vdc to H550Vdc and the current coolant flow rate L is within the second flow rate range of 4L / min < L < 8L / min. Of course, in other preferred embodiments of the present invention, the first voltage range and the second voltage range, the flow rate upper limit, the first flow rate range and the second flow rate range can all be set according to actual situations, and they are not limited to the values listed here. No matter how they are set, the actual principle is similar.

[0076] In a preferred embodiment of the present invention, in step S223, when it is determined that the current temperature difference ΔT = T out -T in between the outlet liquid temperature Tout and the inlet liquid temperature Tin is greater than the first set temperature difference T1, an alarm signal is sent; when it is determined that the current temperature difference ΔT = T out -T in is greater than the first set temperature difference T2, the output power starts to linearly decrease; when it is determined that the current temperature difference ΔT = T out -T in is greater than the third set temperature difference T3, the current output power linearly decreases from the maximum output power Pomax to the first set output power N1*Pomax at the first slope K1; when it is determined that the current temperature difference ΔT = T out -T in is greater than the fourth set temperature difference T4, the output power is reduced to zero; when it is determined that the current temperature difference ΔT = T out -T in is less than the fifth set temperature difference T5, the output power starts to linearly recover at the second slope K2 until the current temperature difference ΔT = T out -T in is less than the sixth set temperature difference T6 and returns to the maximum output power Pomax.

[0077] Specifically, the first slope K1 is:

[0078]

[0079] Wherein, N1 represents the ratio of the first set output power to the maximum output power, which can be set according to actual conditions and can be greater than 0 and less than 1.

[0080] The second slope K2 is:

[0081]

[0082] The first set temperature difference T1 < the second set temperature difference T2 < the third set temperature difference T3 < the fourth set temperature difference T4; the fifth set temperature difference T5 > the sixth set temperature difference T6. Here, the set temperature differences T1 to T6 can select any suitable values ​​according to actual needs, as long as the above settings are met. In a preferred embodiment of the present invention, the temperature of the main heat-generating components can be tested to determine the power reduction temperature difference point ΔT, the output voltage range Vout, each set output power and the range of the flow rate L covered, while ensuring that the temperature of the main heat-generating components does not exceed the set value to meet the device temperature derating.

[0083] In a preferred embodiment of the present invention, in step S224, the current temperature difference ΔT=T between the liquid temperature Tout at the liquid outlet and the liquid temperature Tin at the liquid inlet is determined. out -T in When the temperature difference is greater than the seventh set temperature difference T7, an alarm signal is sent; when the current temperature difference ΔT=T out -T in When the temperature difference is greater than the eighth set temperature difference T8, the output power is controlled to drop directly to the second set output power; when the current temperature difference ΔT=T out -T in When the temperature difference is greater than the fourth set temperature difference T4, the output power is controlled to be reduced to zero; when the current temperature difference ΔT=T out -T in When it is less than the ninth set temperature difference T9, the control output power is restored to the maximum output power Pomax. The ninth set temperature difference T9<seventh set temperature difference T7<eighth set temperature difference T8<fourth set temperature difference T4. Here, the set temperature differences T7~T9 can select any suitable values ​​according to actual needs, as long as the above settings are met. The second set output power is greater than the first set output power. For example, the first set output power is preferably 0.5Pomax, and the second set output power is preferably 0.8Pomax. In a preferred embodiment of the present invention, the temperature of the main heat-generating components can be tested to determine the power reduction temperature difference point ΔT, the output voltage range Vout, each set output power and the range of the flow rate L covered, while ensuring that the temperature of the main heat-generating components does not exceed the set value to meet the device temperature derating.

[0084] When it is determined that the inlet liquid temperature Tin of the liquid cooling heat dissipation module is within the second temperature range (0°C to 25°C), the output power of the liquid cooling heat dissipation module is controlled based on the current coolant flow rate, different voltage output ranges in the second temperature range, and different design temperature differences. The specific steps are as follows.

[0085] In step S231, it is determined whether the current coolant flow rate is greater than the flow rate upper limit. If so, no output power adjustment is performed; otherwise, the subsequent output power adjustment steps are executed. For example, when the coolant flow rate L > 8 L / min, no output power adjustment is performed; otherwise, the subsequent output power adjustment steps are triggered, that is, step S232 is executed.

[0086] In step S232, when it is determined that the current output voltage is within the first voltage range and the current coolant flow rate is within the third flow rate range, step S233 is executed; when it is determined that the current output voltage is within the second voltage range and the current coolant flow rate is within the fourth flow rate range, step S234 is executed. For example, when the current output voltage is within the first voltage range of L300Vdc to L500Vdc and H550Vdc to H1000Vdc and the coolant flow rate L is within the third flow rate range of 0.5 L / min < L < 5 L / min, step S233 is executed. When it is determined that the current output voltage is within the second voltage range of H500Vdc to H550Vdc and the current coolant flow rate L is within the fourth flow rate range of 5 L / min < L < 6 L / min, step S234 is executed. Of course, in other preferred embodiments of the present invention, the first voltage range and the second voltage range, the flow rate upper limit, the third flow rate range, and the fourth flow rate range can all be set according to actual situations and are not limited to the values listed here.

[0087] In a preferred embodiment of the present invention, in step S233, when it is determined that the current temperature difference ΔT = T out -T in between the outlet liquid temperature Tout and the inlet liquid temperature Tin is greater than the tenth set temperature difference T10, an alarm signal is sent; when it is determined that the current temperature difference ΔT = T out -T in is greater than the eleventh set temperature difference T11, the control output power starts to linearly decrease; when it is determined that the current temperature difference ΔT = T out -T in is greater than the twelfth set temperature difference T12, the control output power linearly decreases to the third set output power N3*P omax ; when it is determined that the current temperature difference ΔT = T out -T in is greater than the thirteenth set temperature difference T13, the control output power is reduced to zero; when it is determined that the current temperature difference ΔT = T out -Tin When the temperature difference is less than the fourteenth set temperature difference T14, the output power is controlled to rise linearly according to the fourth slope K4 until the current temperature difference ΔT=T out -T in When the temperature difference is less than the fifteenth set temperature difference T15, it will return to the maximum output power P omax .

[0088] Specifically, the third slope K3 is:

[0089]

[0090] Wherein, N3 represents the ratio of the third set output power to the maximum output power, which can be set according to actual conditions and can be greater than 0 and less than 1.

[0091] The fourth slope K4 is:

[0092]

[0093] The tenth set temperature difference T10 < the eleventh set temperature difference T11 < the twelfth set temperature difference T12 < the thirteenth set temperature difference T13; the fourteenth set temperature difference T14 > the fifteenth set temperature difference T15. Here, the set temperature differences T10 to T15 can select any suitable values ​​according to actual needs, as long as the above settings are met. As mentioned above, in a preferred embodiment of the present invention, the temperature of the main heat-generating components can be tested to determine the power reduction temperature difference point ΔT, the output voltage range Vout, each set output power and the range of the flow rate L covered, while ensuring that the temperature of the main heat-generating components does not exceed the set value to meet the device temperature derating.

[0094] In a preferred embodiment of the present invention, in step S234, the current temperature difference ΔT=T between the liquid temperature Tout at the liquid outlet and the liquid temperature Tin at the liquid inlet is determined. out -T in When the temperature difference is greater than the sixteenth set temperature difference T16, an alarm signal is sent; when the current temperature difference ΔT=T out -T in When the temperature difference is greater than the seventeenth set temperature difference T17, the control output power starts to decrease linearly; when the current temperature difference ΔT=T out -T in When the temperature difference is greater than the eighteenth set temperature difference T18, the output power is controlled to decrease linearly according to the fifth slope K5 to the fifth set output power N5*P omax ; When determining the current temperature difference ΔT = T out -T in When the temperature difference is greater than the nineteenth set temperature difference T19, the control output power is reduced to zero; when the current temperature difference ΔT=T out -T inWhen the current temperature difference is less than the 20th set temperature difference T20, the output power is controlled to rise linearly according to the sixth slope K6 until the current temperature difference is less than the 21st set temperature difference T21 and then returns to the maximum output power P omax .

[0095] Specifically, the fifth slope K5 is:

[0096]

[0097] Among them, N5 represents the ratio of the fifth set output power to the maximum output power, which can be set according to actual conditions and can be greater than 0 and less than 1.

[0098] The sixth slope K6 is:

[0099]

[0100] The sixteenth set temperature difference T16<the seventeenth set temperature difference T17<the eighteenth set temperature difference T18<the nineteenth set temperature difference T19; the twentieth set temperature difference T20>the twenty-first set temperature difference T21. Here, the set temperature differences T16-T21 can select any suitable values ​​according to actual needs, as long as the above settings are met. As mentioned above, in a preferred embodiment of the present invention, the set temperature difference, the output voltage range, the set output power and the covered flow range can be determined by testing the temperature of the main heat-generating components, while ensuring that the temperature of the main heat-generating components does not exceed the set value to meet the device temperature derating.

[0101] The control method of the liquid cooling module of the present invention is implemented to realize independent judgment and protection of the liquid cooling module by utilizing the temperature difference between the liquid inlet and the liquid outlet of the liquid cooling module, and the scheme is simple to implement, has the characteristics of high reliability, and can minimize the loss of multiple output powers and provide output power to the maximum extent. Furthermore, different temperature difference nodes are designed for different temperature intervals, voltage output ranges, and coolant flow rates, and different output power adjustment slopes are set accordingly, so that the adjustment of the output power can be more accurate and reliable, and the power loss can be minimized.

[0102] The control method of the liquid cooling module of the present invention will be further described below in conjunction with specific embodiments. It should be noted that the following parameters are only used for illustration and not for limiting the present invention. In the preferred embodiment of the present invention, the temperature of the main heat-generating components can be tested to determine the set temperature difference, output voltage range, each set output power and the range of the flow rate covered under the premise of ensuring that the temperature of the main heat-generating components does not exceed the set value to meet the device temperature derating.

[0103] First, collect the inlet liquid temperature and outlet liquid temperature of the liquid cooling heat dissipation module. Design the first temperature range (25°C to 60°C), the second temperature range (0°C to 25°C), and the third temperature range (< -5°C).

[0104] When it is determined that the inlet liquid temperature Tin of the liquid cooling heat dissipation module is within the first temperature range (i.e., 25°C < T in < 60°C), control the output power of the liquid cooling heat dissipation module based on the current coolant flow rate, different voltage output ranges in the first temperature range, and different design temperature differences. That is, when the coolant flow rate L is 0 L / min < L < 8 L / min, the output power of the liquid cooling heat dissipation module will be controlled based on the current coolant flow rate, different voltage output ranges in the first temperature range, and different design temperature differences. When the coolant flow rate L > 8 L / min, starting the output power control will not be triggered.

[0105] When the output voltage is within the range of L300Vdc to L500Vdc and H550Vdc to H1000Vdc, detect the current temperature difference ΔT = T out -T in between the outlet liquid temperature Tout and the inlet liquid temperature Tin is greater than the first set temperature difference T1 (8°C), that is, ΔT = T out -T in ≥ 8°C, send a high-temperature warning signal to the system to prompt the system to increase the heat dissipation capacity but do not adjust the output power. When the current temperature difference ΔT = T out -T in is greater than the second set temperature difference T2 (9°C), the output power starts to linearly decrease from P omax . When the current temperature difference ΔT = T out -T in is greater than the third set temperature difference T3 (18°C), the output power is reduced to 0.5P omax (i.e., N1 = 0.5). In this interval, the slope K of the linearly decreasing output power is:[[]]

[0106]

[0107] When the current temperature difference ΔT = T out -T in ≥ 24°C (the fourth set temperature difference T4), stop the power output and send a shutdown warning to the system. When the current temperature difference ΔT = T out -T in ≤ 8°C (the fifth set temperature difference T5), the output power starts to linearly increase until the current temperature difference ΔT = T out -T in ≤ 4°C (the sixth set temperature difference T6), the output power of the charging module resumes to P omax, within this interval, the slope K of the power recovery is:

[0108]

[0109] When the output voltage is between H500Vdc and H550Vdc, and the coolant flow rate L is within the range of 4L / min < L < 8L / min, start the subsequent steps. The current temperature difference ΔT = T out -T in ≥ 5°C (the seventh set temperature difference T7), send a high-temperature warning signal to the system to prompt the system to increase the heat dissipation capacity but do not adjust the output power. The current temperature difference ΔT = T out -T in ≥ 6°C (the eighth set temperature difference T8), the output power directly drops to the second set output power 0.8P omax , the current temperature difference ΔT = T out -T in ≥ 24°C (the fourth set temperature difference T4), stop the output. The current temperature difference ΔT = T out -T in ≤ 3.3°C ((the ninth set temperature difference T9)), the power recovers to the maximum output power Pomax; the pre-droop warning before the power drops back to the power before triggering the derating is eliminated.

[0110] It should be noted that the range of 4L / min < L < 8L / min mentioned above is only for illustration. When the coolant flow rate L is in other ranges, such as 0L / min < L < 4L / min, the control process is similar, but only the specific values of the set temperature differences are different (that is, the set temperature differences T7, T8, T9, and T4 and the second set output power can be adjusted according to the actual situation). Those skilled in the art can set according to the actual situation and will not be elaborated here.

[0111] When it is determined that the inlet liquid temperature Tin of the liquid-cooled heat dissipation module is in the second temperature range (i.e., 0°C < T in < 25°C), control the output power of the liquid-cooled heat dissipation module based on the current coolant flow rate, different voltage output ranges in the second temperature range, and different design temperature differences. That is, when the coolant flow rate L is in the range of 0L / min < L < 8L / min, the output power of the liquid-cooled heat dissipation module will be controlled based on the current coolant flow rate, different voltage output ranges in the second temperature range, and different design temperature differences. When the coolant flow rate L > 8L / min, the output power control will not be started.

[0112] When the output voltage is between L300Vdc and L500Vdc, H550Vdc and H1000Vdc, and the coolant flow rate L is within the range of 0.5L / min < L < 5L / min, start the subsequent steps.

[0113] When the current temperature difference ΔT = T between the liquid temperature Tout at the liquid outlet and the liquid temperature Tin at the liquid inlet out -T in ≥ 11 °C (the tenth set temperature difference T10), send a high-temperature warning signal to the system to prompt the system to increase the heat dissipation capacity but do not adjust the output power. The current temperature difference ΔT = T out -T in ≥ 13 °C (the eleventh set temperature difference T11), linearly reduce the output power to ensure that the heat generation will not damage the internal components. The current temperature difference ΔT = T out -T in ≥ 18 °C (the twelfth set temperature difference T12), the output power is reduced to the third set output power 0.75Pomax. The slope of the linear reduction of the output power in this interval is:

[0114]

[0115] The current temperature difference ΔT = T out -T in ≥ 30 °C (the thirteenth set temperature difference T13), stop the power output and send a shutdown warning to the system. The current temperature difference ΔT = T out -T in ≤ 11 °C (the fourteenth set temperature difference T14), the output power starts to linearly rise until the current temperature difference ΔT = T out -T in ≤ 6 °C (the fifteenth set temperature difference T15), the output power returns to P omax , and the slope of the power rise in this interval is:

[0116]

[0117] When the output voltage is in the range of H500Vdc to H550Vdc and the coolant flow rate L is in the third flow rate range 5L / min < L < 6L / min, start the subsequent steps.

[0118] When the current temperature difference ΔT = T between the liquid temperature Tout at the liquid outlet and the liquid temperature Tin at the liquid inlet out -T in ≥ 7.3 °C (the sixteenth set temperature difference T16), send a high-temperature warning signal to the system to prompt the system to increase the heat dissipation capacity of the current temperature difference but do not adjust the output power. The current temperature difference ΔT = T out -T in ≥ 8.3 °C (the seventeenth set temperature difference T17), start to linearly reduce the output power. The current temperature difference ΔT = T out -T in≥12℃ (the eighteenth set temperature difference T18), the output power is reduced to the fifth set output power 0.75P omax ,In this interval, the slope of the linear decrease of output power is:

[0119]

[0120] Current temperature difference ΔT = T out -T in ≥25℃ (19th set temperature difference T19), stop output, current temperature difference ΔT=T out -T in ≤7.3℃ (the 20th set temperature difference T20), the output power starts to rise linearly; the current temperature difference ΔT=T out -T in ≤5℃(the 21st set temperature difference T21) rises to P omax , the slope of the output power recovery in this interval is:

[0121]

[0122] When determining the current temperature difference ΔT between the liquid temperature Tout at the liquid outlet and the liquid temperature Tin at the liquid inlet of the liquid cooling module = T out -T in In the third temperature range, for example, ΔT = T out -T in When the temperature is less than -5℃, it is considered that the module's inlet and outlet water ports may be reversely connected. At this time, the module stops outputting and reports the fault to the system, prompting the staff to check whether the water channel connection is correct.

[0123] In a further preferred embodiment of the present invention, any of the aforementioned control methods can be applied to a single liquid-cooled heat dissipation module, or can be applied to multiple liquid-cooled heat dissipation modules simultaneously or in a time-sharing manner. Preferably, the aforementioned method is preferably applied to a liquid-cooled heat dissipation system comprising multiple liquid-cooled heat dissipation modules. A set of liquid inlet liquid temperatures and liquid outlet liquid temperatures of each liquid-cooled heat dissipation module in the liquid-cooled heat dissipation system can be collected separately; then, for each liquid-cooled heat dissipation module, the corresponding liquid inlet liquid temperature is divided into several intervals, and in each interval, the output power of each liquid-cooled heat dissipation module is controlled simultaneously or in a time-sharing manner according to the different voltage output ranges, different coolant flow rates and different design temperature differences corresponding to each liquid-cooled heat dissipation module. Here, the control process of each liquid-cooled heat dissipation module can be carried out simultaneously, separately, or partially simultaneously, all of which fall within the protection scope of the present invention.

[0124] The control method of the liquid-cooling heat dissipation module of the present invention realizes independent judgment and protection of the liquid-cooling heat dissipation module by utilizing the temperature difference between the liquid inlet and the liquid outlet of the liquid-cooling heat dissipation module. The scheme is simple to implement and has the characteristics of high reliability. It can minimize the loss of multiple output power and provide maximum output power.

[0125] Figure 2 FIG. 1 is a flow chart of a first preferred embodiment of a control system of a liquid cooling module of the present invention. Figure 2 As shown, the control system of the liquid cooling module of the present invention includes a plurality of liquid cooling modules 100 and a control device 200. The control device 200 includes temperature sensors 210 respectively arranged at the liquid outlet and the liquid inlet of each liquid cooling module, and a controller 220 connected to the temperature sensor 210 for communication. The temperature sensor 210 is used for the liquid temperature at the liquid inlet and the liquid temperature at the liquid outlet of the liquid cooling module. The controller 220 is used to divide the liquid inlet liquid temperature corresponding to each liquid cooling module into several intervals, and in each interval, control the output power of each liquid cooling module simultaneously or in a time-sharing manner according to the different voltage output ranges, different coolant flow rates and different design temperature differences corresponding to each liquid cooling module.

[0126] In the control system of the liquid-cooled heat dissipation module of the present invention, the controller is further used to design a first temperature interval and a second temperature interval; when it is determined that the liquid temperature at the liquid inlet of the liquid-cooled heat dissipation module is in the first temperature interval, the output power of the liquid-cooled heat dissipation module is controlled based on the current coolant flow rate, different voltage output ranges in the first temperature interval and different designed temperature differences; when it is determined that the liquid temperature at the liquid inlet of the liquid-cooled heat dissipation module is in the second temperature interval, the output power of the liquid-cooled heat dissipation module is controlled based on the current coolant flow rate, different voltage output ranges in the second temperature interval and different designed temperature differences.

[0127] In the control system of the liquid cooling module of the present invention, a computer program can be set in the controller to perform the following steps: S221, determine whether the current coolant flow is greater than the flow upper limit, if so, do not adjust the output power, otherwise execute step S222; step S222, when it is determined that the current output voltage is within the first voltage range and the current coolant flow is within the first flow range, execute step S223, when it is determined that the current output voltage is within the second voltage range and the current coolant flow is within the second flow range, execute step S224; step S223, when it is determined that the current temperature difference is greater than the first set temperature difference, do not adjust the output power and send an alarm signal; when it is determined that the current temperature difference is greater than the second set temperature difference, control the output power to start linearly decreasing; when it is determined that the current temperature difference is greater than the second set temperature difference, When it is determined that the current temperature difference is greater than the third set temperature difference, the output power is controlled to linearly decrease to the first set output power according to the first slope; when it is determined that the current temperature difference is greater than the fourth set temperature difference, the output power is controlled to be reduced to zero; when it is determined that the current temperature difference is less than the fifth set temperature difference, the output power is controlled to linearly increase according to the second slope until the current temperature difference is less than the sixth set temperature difference and then restore to the maximum output power; S224, when it is determined that the current temperature difference is greater than the seventh set temperature difference, no output power adjustment is performed and an alarm signal is sent; when it is determined that the current temperature difference is greater than the eighth set temperature difference, the output power is controlled to directly decrease to the second set output power; when it is determined that the current temperature difference is greater than the fourth set temperature difference, the output power is controlled to be reduced to zero; when it is determined that the current temperature difference is less than the ninth set temperature difference, the output power is controlled to restore to the maximum output power.

[0128] In the control system of the liquid cooling module of the present invention, a computer program can be set in the controller to perform the following steps: step S231, determine whether the current coolant flow is greater than the flow upper limit, if so, do not adjust the output power, otherwise execute step S232; step S232, execute step S233 when it is determined that the current output voltage is within the first voltage range and the current coolant flow is within the third flow range, and execute step S234 when it is determined that the current output voltage is within the second voltage range and the current coolant flow is within the fourth flow range; step S233, when it is determined that the current temperature difference is greater than the tenth set temperature difference, do not adjust the output power and send an alarm signal; when it is determined that the current temperature difference is greater than the eleventh set temperature difference, control the output power to start linearly decreasing; when it is determined that the current temperature difference is greater than the twelfth set temperature difference, control the output power to linearly decrease to the third according to the third slope. Set the output power; when it is determined that the current temperature difference is greater than the thirteenth set temperature difference, control the output power to be reduced to zero; when it is determined that the current temperature difference is less than the fourteenth set temperature difference, control the output power to start linearly recovering according to the fourth slope until the current temperature difference is less than the fifteenth set temperature difference and restores to the maximum output power; S234, when it is determined that the current temperature difference is greater than the sixteenth set temperature difference, do not adjust the output power and send an alarm signal; when it is determined that the current temperature difference is greater than the seventeenth set temperature difference, control the output power to start linearly decreasing; when it is determined that the current temperature difference is greater than the eighteenth set temperature difference, control the output power to linearly decrease to the fifth set output power according to the fifth slope; when it is determined that the current temperature difference is greater than the nineteenth set temperature difference, control the output power to be reduced to zero; when it is determined that the current temperature difference is less than the twentieth set temperature difference, control the output power to start linearly recovering according to the sixth slope until the current temperature difference is less than the twenty-first set temperature difference and restores to the maximum output power.

[0129] In a further preferred embodiment of the present invention, the controller 220 can be constructed based on the control method of the aforementioned liquid cooling module, which will not be described again here.

[0130] The control system of the liquid-cooled heat dissipation module implemented in the present invention realizes independent judgment and protection of the liquid-cooled heat dissipation module by utilizing the temperature difference between the liquid inlet and the liquid outlet of the liquid-cooled heat dissipation module. The solution is simple to implement and has the characteristics of high reliability. It can minimize the loss of multiple output power and provide maximum output power.

[0131] Although the present invention is described by specific embodiments, it should be understood by those skilled in the art that various changes and equivalent substitutions may be made to the present invention without departing from the scope of the present invention. In addition, various modifications may be made to the present invention for specific situations or materials without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed, but should include all implementation methods falling within the scope of the claims of the present invention.

[0132] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A control method based on a liquid cooling heat dissipation module, characterized in that: include: Step S1, collecting the liquid temperature of the liquid inlet and the liquid temperature of the liquid outlet of the same liquid cooling module; Step S2, dividing the liquid temperature at the liquid inlet into a plurality of intervals, and controlling the output power of the liquid cooling module in each interval according to different voltage output ranges, different coolant flow rates and different designed temperature differences; The designed temperature difference is the temperature difference between the liquid temperature at the liquid inlet and the liquid temperature at the liquid outlet.

2. The control method based on the liquid cooling heat dissipation module according to claim 1 is characterized in that: The step S2 further comprises: Step S21, designing a first temperature interval and a second temperature interval; Step S22: when it is determined that the liquid temperature at the liquid inlet of the liquid cooling heat dissipation module is in the first temperature interval, controlling the output power of the liquid cooling heat dissipation module based on the current coolant flow rate, different voltage output ranges in the first temperature interval, and different designed temperature differences; Step S23: When it is determined that the liquid temperature of the liquid inlet of the liquid cooling heat dissipation module is in the second temperature range, the output power of the liquid cooling heat dissipation module is controlled based on the current coolant flow, different voltage output ranges in the second temperature range and different designed temperature differences.

3. The control method based on the liquid cooling module according to claim 2 is characterized in that: The step S22 further comprises: Step S221, determining whether the current coolant flow rate is greater than the flow upper limit, if so, not adjusting the output power, otherwise executing step S222; Step S222, when it is determined that the current output voltage is within the first voltage range and the current coolant flow rate is within the first flow rate range, executing step S223; when it is determined that the current output voltage is within the second voltage range and the current coolant flow rate is within the second flow rate range, executing step S224; Step S223: when it is determined that the current temperature difference is greater than the first set temperature difference, the output power is not adjusted and an alarm signal is sent; when it is determined that the current temperature difference is greater than the second set temperature difference, the output power is controlled to start to decrease linearly; when it is determined that the current temperature difference is greater than the third set temperature difference, the output power is controlled to decrease linearly to the first set output power according to the first slope; when it is determined that the current temperature difference is greater than the fourth set temperature difference, the output power is controlled to be reduced to zero; when it is determined that the current temperature difference is less than the fifth set temperature difference, the output power is controlled to start to rise linearly according to the second slope until the current temperature difference is less than the sixth set temperature difference and the maximum output power is restored; S224. When it is determined that the current temperature difference is greater than the seventh set temperature difference, the output power is not adjusted and an alarm signal is sent; when it is determined that the current temperature difference is greater than the eighth set temperature difference, the output power is controlled to drop directly to the second set output power; when it is determined that the current temperature difference is greater than the fourth set temperature difference, the output power is controlled to be reduced to zero; when it is determined that the current temperature difference is less than the ninth set temperature difference, the output power is controlled to be restored to the maximum output power.

4. The control method based on the liquid cooling heat dissipation module according to claim 3 is characterized in that: In the step S223, the first slope K1 is: Wherein, N1 represents the ratio of the first set output power to the maximum output power, P omax represents the maximum output power, T3 represents the third set temperature difference, and T2 represents the second set temperature difference; The second slope K2 is: Wherein, N1 represents the ratio of the first set output power to the maximum output power, P omax represents the maximum output power, T5 represents the fifth set temperature difference, and T6 represents the sixth set temperature difference; The first set temperature difference < the second set temperature difference < the third set temperature difference < the fourth set temperature difference; The fifth set temperature difference>the sixth set temperature difference.

5. The control method based on the liquid cooling module according to claim 3 is characterized in that: In step S224, the ninth set temperature difference<seventh set temperature difference<eighth set temperature difference<fourth set temperature difference; and the second set output power is greater than the first set output power.

6. The control method based on the liquid cooling module according to claim 2 is characterized in that: The step S23 further comprises: Step S231, determining whether the current coolant flow rate is greater than the flow rate upper limit, if so, not adjusting the output power, otherwise executing step S232; Step S232, when it is determined that the current output voltage is within the first voltage range and the current coolant flow rate is within the third flow rate range, execute step S233; when it is determined that the current output voltage is within the second voltage range and the current coolant flow rate is within the fourth flow rate range, execute step S234; Step S233: when it is determined that the current temperature difference is greater than the tenth set temperature difference, the output power is not adjusted and an alarm signal is sent; when it is determined that the current temperature difference is greater than the eleventh set temperature difference, the output power is controlled to start to decrease linearly; when it is determined that the current temperature difference is greater than the twelfth set temperature difference, the output power is controlled to decrease linearly to the third set output power according to the third slope; when it is determined that the current temperature difference is greater than the thirteenth set temperature difference, the output power is controlled to be reduced to zero; when it is determined that the current temperature difference is less than the fourteenth set temperature difference, the output power is controlled to start to rise linearly according to the fourth slope until the current temperature difference is less than the fifteenth set temperature difference and the maximum output power is restored; S234. When it is determined that the current temperature difference is greater than the sixteenth set temperature difference, the output power is not adjusted and an alarm signal is sent; when it is determined that the current temperature difference is greater than the seventeenth set temperature difference, the output power is controlled to start to decrease linearly; when it is determined that the current temperature difference is greater than the eighteenth set temperature difference, the output power is controlled to decrease linearly to the fifth set output power according to the fifth slope; when it is determined that the current temperature difference is greater than the nineteenth set temperature difference, the output power is controlled to be reduced to zero; when it is determined that the current temperature difference is less than the twentieth set temperature difference, the output power is controlled to start to rise linearly according to the sixth slope until the current temperature difference is less than the twenty-first set temperature difference and the maximum output power is restored.

7. The control method based on the liquid cooling module according to claim 6 is characterized in that: In step S233, the third slope K3 is: Wherein, N3 represents the ratio of the third set output power to the maximum output power, P omax Indicates the maximum output power, T12 indicates the twelfth set temperature difference, and T11 indicates the eleventh set temperature difference; The fourth slope K4 is: Wherein, N3 represents the ratio of the third set output power to the maximum output power, P omax Indicates the maximum output power, T14 indicates the fourteenth set temperature difference, and T15 indicates the fifteenth set temperature difference; The tenth set temperature difference < the eleventh set temperature difference < the twelfth set temperature difference < the thirteenth set temperature difference; The fourteenth setting temperature difference>the fifteenth setting temperature difference.

8. The control method based on the liquid cooling module according to claim 6 is characterized in that: In the step S234, the fifth slope K5 is: Wherein, N5 represents the ratio of the fifth set output power to the maximum output power, P omax Indicates the maximum output power, T18 indicates the eighteenth set temperature difference, and T17 indicates the seventeenth set temperature difference; The sixth slope K6 is: Wherein, N5 represents the ratio of the fifth set output power to the maximum output power, P omax represents the maximum output power, T21 represents the twentieth set temperature difference, and T21 represents the twenty-first set temperature difference; The sixteenth set temperature difference < the seventeenth set temperature difference < the eighteenth set temperature difference < the nineteenth set temperature difference; The 20th set temperature difference> the 21st set temperature difference.

9. The control method based on the liquid cooling module according to any one of claims 2 to 8, characterized in that: The step S2 further includes: S24, designing a third temperature interval, and when the temperature difference between the liquid temperature at the liquid inlet and the liquid temperature at the liquid outlet of the liquid cooling module is within the third temperature interval, determining that the system is faulty; or In step S1, a group of liquid inlet liquid temperatures and liquid outlet liquid temperatures of each of the multiple liquid-cooling heat dissipation modules are collected respectively; in step S2, for each liquid-cooling heat dissipation module, the corresponding liquid inlet liquid temperature is divided into several intervals, and in each interval, the output power of each liquid-cooling heat dissipation module is controlled simultaneously or in time-sharing manner according to the different voltage output ranges, different coolant flows and different designed temperature differences corresponding to each liquid-cooling heat dissipation module.

10. A control system for a liquid cooling module, characterized in that: It includes a plurality of liquid cooling and heat dissipation modules and a control device; the control device includes temperature sensors respectively arranged at the liquid outlet and the liquid inlet of each liquid cooling and heat dissipation module, and a controller connected to the temperature sensor in communication; The temperature sensor is used based on the liquid temperature of the liquid inlet and the liquid temperature of the liquid outlet of each liquid cooling heat dissipation module; The controller is used to divide the liquid temperature of the liquid inlet corresponding to each liquid-cooling heat dissipation module into several intervals, and in each interval, control the output power of each liquid-cooling heat dissipation module simultaneously or in a time-sharing manner according to the different voltage output ranges, different coolant flows and different designed temperature differences corresponding to each liquid-cooling heat dissipation module.

Images