Cooling control method and device based on multi-pump liquid cooling system and electronic equipment

Abstract

The invention provides a cooling control method and device based on a multi-pump liquid cooling system and electronic equipment. The cooling control method comprises the steps that a main circulation water inlet and outlet temperature difference corresponding to a main cooling circulation branch is collected through a main cooling module; determining a target main path cooling liquid required flow corresponding to a main cooling circulation loop according to the engine system required heat dissipating capacity and the main circulation water inlet and outlet temperature difference; the branch water inlet and outlet temperature difference corresponding to each cooling circulation branch is collected through an auxiliary cooling module; according to the branch demanded heat dissipating capacity and the branch water inlet and outlet temperature difference corresponding to each cooling circulation branch, target branch cooling liquid demanded flow corresponding to each cooling circulation branch is determined; and determining a first target output power corresponding to the main cooling module according to the target main path cooling liquid demand flow, and determining a second target output power corresponding to the auxiliary cooling module according to the target branch path cooling liquid demand flow. The cooling module corresponding to each cooling point is independently controlled, so that cooling treatment of a single cooling point in the engine system is realized, and resource waste is avoided.

Description

Technical Field

[0001] This application relates to the field of liquid cooling system technology, and in particular to a cooling control method, device and electronic equipment based on a multi-pump liquid cooling system. Background Art

[0002] The engine system includes multiple operating modules. When the engine system is running for a long time or at a high power, a liquid cooling system is usually used to cool the operating modules in order to prevent them from overheating.

[0003] Currently, the mainstream liquid cooling system is the single-pump liquid cooling system. The single-pump liquid cooling system uses a single mechanical water pump or a single electric water pump. By controlling the diameter of the series and parallel pipes connected to the single-pump liquid cooling system, the flow rate in the single-pump liquid cooling system can be controlled and distributed. In this way, it provides cooling to the target operating module through indirect heat exchange, so as to ensure the normal and efficient operation of each module in the engine system. However, the single-pump liquid cooling system corresponds to a single coolant flow drive point. It cannot provide precise cooling flow control for a single cooling point in the engine system. It can only drive the entire cooling system to drive the coolant at a single point to achieve the purpose of driving the coolant to a specified flow rate. This greatly wastes the energy consumed by driving the water pump. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide at least one cooling control method, device and electronic equipment based on a multi-pump liquid cooling system, which achieves cooling treatment of a single cooling point in the engine system by individually controlling the cooling module corresponding to each cooling point, thereby avoiding resource waste.

[0005] This application mainly includes the following aspects:

[0006] In a first aspect, embodiments of this application provide a cooling control method based on a multi-pump liquid cooling system. The multi-pump liquid cooling system is used to cool and dissipate heat from an engine system. The engine system includes a main cooling point and multiple auxiliary cooling points. The multi-pump liquid cooling system includes a main cooling module, multiple auxiliary cooling modules, and a heat dissipation module. The main cooling module outlet, the heat dissipation module, and the main cooling module return port are sequentially connected via a main liquid pipeline to form a main cooling circulation loop. Multiple branch access points are provided on the liquid pipeline between the main cooling module outlet and the heat dissipation module. Each branch access point corresponds one-to-one with a multiple auxiliary cooling module. The branch access points are connected to their corresponding auxiliary cooling modules and the main cooling module return port via auxiliary liquid pipelines to form cooling circulation branches. A main cooling node is provided on the liquid pipeline between the main cooling module outlet and a target branch access point. The target branch access point is the branch access point closest to the main cooling module outlet. For each cooling circulation branch, the auxiliary cooling modules in that cooling circulation branch are connected to... A secondary cooling point is provided between the return inlets of the main cooling module. The method includes: collecting the temperature difference between the inlet and outlet water of the main cooling circulation branch corresponding to the main cooling circulation branch through the main cooling module; determining the target main coolant flow rate of the main cooling circulation loop based on the heat dissipation required by the engine system and the temperature difference between the inlet and outlet water of the main circulation; collecting the temperature difference between the inlet and outlet water of each cooling circulation branch through the secondary cooling module; determining the target branch coolant flow rate of each cooling circulation branch based on the heat dissipation required by the branch and the temperature difference between the inlet and outlet water of the branch; determining the first target output power of the main cooling module based on the target main coolant flow rate, and determining the second target output power of the secondary cooling module based on the target branch coolant flow rate; driving the main cooling module according to the first target output power and driving the secondary cooling module according to the second target output power, so that the main cooling module and the secondary cooling module provide the corresponding coolant flow rates required by the main cooling circulation loop and the cooling circulation branch, respectively.

[0007] In one possible implementation, the required heat dissipation of the engine system is determined by the following formula:

[0008]

[0009] In this formula, Q0 represents the heat dissipation requirement of the engine system, η represents the percentage of heat transferred from the engine system to the multi-pump liquid cooling system relative to the corresponding fuel thermal energy of the engine system, and g e P represents the fuel consumption rate of the engine system at rated power. e The h represents the operating power of the engine system. u This indicates the calorific value of the fuel in the engine system.

[0010] In one possible implementation, the main cooling module includes a main cooling pump and a first inlet / outlet water temperature detection module corresponding to the main cooling circulation loop. The main cooling pump outlet, the heat dissipation module, and the main cooling pump return outlet are sequentially connected via a main liquid pipeline to form the main cooling circulation loop. The main cooling node is set on the liquid pipeline between the main cooling pump outlet and the target branch access point. The first inlet / outlet water temperature detection module is connected to the main cooling pump return outlet and the main cooling point outlet, respectively. The main circulation inlet / outlet water temperature difference is determined by: obtaining the main cooling point outlet temperature and the main cooling pump return outlet temperature through the first inlet / outlet water temperature detection module; and determining the main circulation inlet / outlet water temperature difference based on the main cooling point outlet temperature and the main cooling pump return outlet temperature.

[0011] In one possible implementation, the target main coolant flow rate corresponding to the main cooling loop is determined by the following formula:

[0012]

[0013] In this formula, L E Q0 represents the target main coolant flow rate, Q0 represents the engine system's required heat dissipation, and Δt represents the target main coolant flow rate. o This represents the temperature difference between the inlet and outlet water of the main circulation system, where Δt o =△t o1 -△t o2 , where △t o1 Indicates the outlet temperature of the main cooling point, Δt o2 The value represents the temperature at the return port of the main cooling pump, ρ represents the density of the coolant, and C represents the specific heat of the coolant.

[0014] In one possible implementation, the auxiliary cooling module includes an auxiliary cooling pump and a second inlet / outlet water temperature detection module. The branch access point is connected to the corresponding auxiliary cooling pump and the return water port of the main cooling pump via an auxiliary liquid pipeline to form a cooling circulation branch. The second inlet / outlet water temperature detection module is connected to the outlet of the auxiliary cooling pump and the outlet of the auxiliary cooling point, respectively. The branch inlet / outlet water temperature difference for each cooling circulation branch is determined by the following formula: the outlet temperature of the auxiliary cooling point and the outlet temperature of the auxiliary cooling pump are obtained by the second inlet / outlet water temperature detection module; the branch inlet / outlet water temperature difference is determined based on the outlet temperature of the auxiliary cooling point and the outlet temperature of the auxiliary cooling pump.

[0015] In one possible implementation, the target coolant flow rate for each cooling cycle branch is determined using the following formula:

[0016]

[0017] In this formula, L m Q represents the target secondary coolant flow rate. mThis represents the required heat dissipation of the branch corresponding to the cooling circulation branch, Δt. m This represents the temperature difference between the inlet and outlet water of the branch, where △t m =△t m1 -△t m2 , where △t m1 Indicates the outlet temperature of the secondary cooling point, Δt m2 This indicates the outlet of the auxiliary cooling pump.

[0018] In one possible implementation, the first target output power corresponding to the main cooling module and the second target output power corresponding to the auxiliary cooling module are determined by: obtaining a first mapping relationship between the main coolant demand flow rate and the output power of the main cooling module, and a second mapping relationship between the branch coolant demand flow rate and the output power of the auxiliary cooling module; and determining the first target output power and the second target output power based on the first mapping relationship and the second mapping relationship, respectively.

[0019] Secondly, this application also provides a cooling control device based on a multi-pump liquid cooling system. The multi-pump liquid cooling system includes a main cooling module, multiple auxiliary cooling modules, and a heat dissipation module. The main cooling module outlet, the heat dissipation module, and the main cooling module return port are sequentially connected via a main liquid pipeline to form a main cooling circulation loop. Multiple branch access points are provided on the liquid pipeline between the main cooling module outlet and the heat dissipation module. Each branch access point corresponds one-to-one with a multiple auxiliary cooling module. The branch access points are connected to their corresponding auxiliary cooling modules and the main cooling module return ports via auxiliary liquid pipelines to form cooling circulation branches. A main cooling node is provided on the liquid pipeline between the main cooling module outlet and a target branch access point, where the target branch access point is the branch access point closest to the main cooling module outlet. For each cooling circulation branch, an auxiliary cooling point is provided between the auxiliary cooling module and the main cooling module return port within that cooling circulation branch.

[0020] The device includes: a first acquisition module for acquiring the main circulation inlet and outlet water temperature difference corresponding to the main cooling circulation branch through the main cooling module; a first determination module for determining the target main cooling circuit coolant demand flow rate corresponding to the main cooling circulation loop based on the engine system's required heat dissipation and the main circulation inlet and outlet water temperature difference; a second acquisition module for acquiring the branch inlet and outlet water temperature difference corresponding to each cooling circulation branch through the auxiliary cooling module; a second determination module for determining the target branch coolant demand flow rate corresponding to each cooling circulation branch based on the branch's required heat dissipation and the branch inlet and outlet water temperature difference; a power determination module for determining the first target output power corresponding to the main cooling module based on the target main cooling circuit coolant demand flow rate, and the second target output power corresponding to the auxiliary cooling module based on the target branch coolant demand flow rate; and a drive module for driving the main cooling module according to the first target output power and the auxiliary cooling module according to the second target output power, so that the main cooling module and the auxiliary cooling module provide the corresponding coolant demand flow rates for the main cooling circulation loop and the cooling circulation branch, respectively.

[0021] Thirdly, embodiments of this application also provide an electronic device, including: a processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor and the memory communicate via the bus. The machine-readable instructions are executed by the processor to perform the steps of the cooling control method based on a multi-pump liquid cooling system in the first aspect or any possible implementation of the first aspect.

[0022] Fourthly, embodiments of this application also provide a computer-readable storage medium storing a computer program, which, when run by a processor, performs the cooling control steps based on a multi-pump liquid cooling system in the first aspect or any possible implementation of the first aspect.

[0023] This application provides a cooling control method, device, and electronic equipment based on a multi-pump liquid cooling system, comprising: acquiring the temperature difference between the inlet and outlet water of the main cooling circulation branch through a main cooling module; determining the target main coolant flow rate of the main cooling circulation loop based on the engine system's required heat dissipation and the temperature difference between the inlet and outlet water of the main circulation; acquiring the temperature difference between the inlet and outlet water of each branch through a secondary cooling module; determining the target branch coolant flow rate of each cooling circulation branch based on the branch's required heat dissipation and the temperature difference between the inlet and outlet water of the branch; determining the first target output power of the main cooling module based on the target main coolant flow rate, and determining the second target output power of the secondary cooling module based on the target branch coolant flow rate. This application achieves cooling of a single cooling point in the engine system by individually controlling the cooling module corresponding to each cooling point, thus avoiding resource waste.

[0024] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A schematic diagram of a single-pump cooling system for an engine is shown.

[0027] Figure 2 This illustration shows one of the structural schematic diagrams of a multi-pump liquid cooling system provided in an embodiment of this application;

[0028] Figure 3 A flowchart of a cooling control method based on a multi-pump liquid cooling system provided in an embodiment of this application is shown;

[0029] Figure 4 This is a second schematic diagram of the structure of a multi-pump liquid cooling system provided in an embodiment of this application;

[0030] Figure 5 This illustration shows a functional block diagram of a multi-pump liquid cooling system device provided in an embodiment of this application;

[0031] Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of this application is shown. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the drawings in this application are for illustrative and descriptive purposes only and are not intended to limit the scope of protection of this application. Furthermore, it should be understood that the schematic drawings are not drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of this application. It should be understood that the operations in the flowcharts may not be implemented in sequence, and steps without logical contextual relationships may be reversed or implemented simultaneously. In addition, those skilled in the art, guided by the content of this application, may add one or more other operations to the flowcharts, or remove one or more operations from the flowcharts.

[0033] Furthermore, the described embodiments are merely some, not all, of the embodiments of this application. The components of the embodiments of this application described and illustrated herein can typically be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0034] The engine system includes multiple cooling points, each corresponding to an operating module. When the engine system operates for a long time or at a high power, a liquid cooling system is usually used to cool the operating module to prevent overheating. The operating module includes, but is not limited to, at least one of the following: engine block, cylinder head, EGR (Exhaust Gas Recirculation) module, turbocharger, and oil cooler.

[0035] Currently, the mainstream liquid cooling system is the single-pump liquid cooling system. The single-pump liquid cooling system uses a single mechanical water pump or a single electronic water pump. By controlling the diameter of the series and parallel pipes connected to the single-pump liquid cooling system, the flow rate in the single-pump liquid cooling system can be controlled and distributed. In this way, cooling is provided to the target operating module through indirect heat exchange, so as to ensure the normal and efficient operation of each module in the engine system.

[0036] See also Figure 1 , Figure 1 A schematic diagram of a single-pump cooling system for an engine is shown. Figure 1The diagram illustrates multiple cooling points P1, P2, P3, cylinder block, and cylinder head of the engine system. In a single-pump cooling system, there is only one main cooling pump, PUM0. The outlet, cylinder block, cylinder head, and radiator of the main cooling pump PUM0 form a corresponding cooling circulation loop with the return port of the main cooling pump PUM0. The two ends of cooling points P1, P2, or P3 are connected to the outlet of the cylinder head and the return port of the main cooling pump PUM0, respectively. Figure 1 The engine single-pump cooling system shown has only one main cooling pump, PUM0. Therefore, it cannot provide precise cooling flow control for a single cooling point. It can only drive the entire cooling circulation loop to drive the coolant at a single point to achieve the specified flow rate, which greatly wastes the energy consumed by driving the water pump.

[0037] Based on this, this application provides a cooling control method, device, and electronic equipment based on a multi-pump liquid cooling system. By individually controlling the cooling module corresponding to each cooling point, the cooling of a single cooling point in the engine system can be achieved, avoiding resource waste. The details are as follows:

[0038] See also Figure 2 , Figure 2 This illustration shows one of the structural schematic diagrams of a multi-pump liquid cooling system provided in an embodiment of this application. For example... Figure 2 As shown, the multi-pump liquid cooling system provided in this application is connected to the engine system for cooling and heat dissipation of the engine system. The engine system includes a main cooling point CY and multiple auxiliary cooling points P. The main cooling point can be a structure formed by the engine block and the engine cylinder head. The multiple auxiliary cooling points include, but are not limited to, at least one of the following: EGR, turbocharger, and oil cooler.

[0039] The multi-pump liquid cooling system includes a main cooling module PU1, multiple auxiliary cooling modules PU2, and a heat dissipation module Radiator. The outlet of the main cooling module PU1, the heat dissipation module Radiator, and the return port of the main cooling module PU1 are connected sequentially through a main liquid pipeline to form a main cooling circulation loop. The pipe diameter of the main liquid pipeline is the first dimension.

[0040] Multiple branch access points are provided on the liquid pipe between the outlet of the main cooling module PU1 and the heat dissipation module Radiator. Each branch access point corresponds to a different auxiliary cooling module PU2. The branch access points are connected to the corresponding auxiliary cooling module PU2 and the return water port of the main cooling module PU1 through auxiliary liquid pipes to form a cooling circulation branch. The pipe diameter of the auxiliary liquid pipe is the second size, and the first size is larger than the second size.

[0041] A main cooling node CY is installed on the liquid pipeline between the outlet of the main cooling module PU1 and the target branch access point. The target branch access point is the branch access point closest to the outlet of the main cooling module PU1. For each cooling circulation branch, an auxiliary cooling point P is installed between the auxiliary cooling module PU2 and the return water port of the main cooling module PU1 in the cooling circulation branch.

[0042] The multi-pump liquid cooling system also includes a controller, and the method provided in this application is applied to the controller.

[0043] See also Figure 3 , Figure 3 A flowchart illustrating a cooling control method based on a multi-pump liquid cooling system provided in an embodiment of this application is shown. Figure 3 As shown, the method provided in this application embodiment includes the following steps:

[0044] S100: Collect the temperature difference between the main circulation inlet and outlet water corresponding to the main cooling circulation branch through the main cooling module.

[0045] S200. Based on the engine system's required heat dissipation and the temperature difference between the main circulation inlet and outlet water, determine the target main cooling fluid flow rate corresponding to the main cooling circulation loop.

[0046] S300 collects the inlet and outlet water temperature difference of each cooling cycle branch through the auxiliary cooling module.

[0047] S400. Based on the heat dissipation requirement of each cooling circulation branch and the temperature difference between the inlet and outlet water of each branch, determine the target coolant flow rate of each cooling circulation branch.

[0048] S500 determines the first target output power of the main cooling module based on the target main coolant flow rate, and determines the second target output power of the auxiliary cooling module based on the target branch coolant flow rate.

[0049] S600 drives the main cooling module according to the first target output power and the auxiliary cooling module according to the second target output power, so that the main cooling module and the auxiliary cooling module provide the corresponding coolant flow rate required by the main cooling circulation loop and the cooling circulation branch respectively.

[0050] In steps S100 to S600, this application configures a corresponding cooling module for each cooling node and controls the power output of the corresponding cooling module according to the flow requirements of each cooling node, thereby realizing independent cooling control of a single cooling node, avoiding resource waste while improving control accuracy.

[0051] In a preferred embodiment, please refer to Figure 4 , Figure 4 This is a second schematic diagram of a multi-pump liquid cooling system provided in an embodiment of this application. (See attached diagram.) Figure 4 As shown, the engine system includes a main cooling point CY and multiple auxiliary cooling points P1 and P2. The main cooling module includes a main cooling pump PUMP0 and a first inlet and outlet water temperature detection module TS0 corresponding to the main cooling circulation loop. The main cooling pump PUMP0 outlet, the radiator module, and the main cooling pump PUMP0 return water inlet are sequentially connected through a main liquid pipeline to form a main cooling circulation loop. The main cooling node CY is set on the liquid pipeline between the main cooling pump PUMP0 outlet and the target branch access point. The first inlet and outlet water temperature detection module TS0 is connected to the main cooling pump return water inlet and the main cooling point outlet, respectively.

[0052] Specifically, in the main cooling loop, the engine system generates heat through combustion. This heat is transferred to the coolant in the main liquid pipe through the main cooling node CY (including the cylinder block and cylinder head wall). The coolant, carrying heat, is cooled by the Radiator module and then driven back to the return end of the main cooling pump PUMP0.

[0053] In a preferred embodiment, step S100 includes:

[0054] The first inlet and outlet water temperature detection module TS0 obtains the main cooling point outlet temperature and the main cooling pump return water temperature respectively. Based on the main cooling point outlet temperature and the main cooling pump return water temperature, the main circulation inlet and outlet water temperature difference is determined. The main circulation inlet and outlet water temperature difference is equal to the difference between the main cooling point outlet temperature and the main cooling pump return water temperature.

[0055] In a preferred embodiment, step S200 includes determining the required heat dissipation of the engine system using the following formula:

[0056]

[0057] In this formula, Q0 represents the heat dissipation requirement of the engine system, η represents the percentage of heat transferred from the engine system to the multi-pump liquid cooling system relative to the corresponding fuel thermal energy of the engine system, and g e This indicates the fuel consumption rate of the engine system at rated power, expressed in g / kWh, P. eThis indicates the operating power of the engine system, in kW and h. u The fuel calorific value of the engine system is expressed in kJ / kg, η, g e h u and P e It is obtained in real time from the main control module of the engine system.

[0058] In a preferred embodiment, step S200 further includes determining the target main coolant flow rate corresponding to the main cooling loop using the following formula:

[0059]

[0060] In this formula, L E The target main coolant flow rate is represented by L / min, Q0 represents the engine system's required heat dissipation, and Δt is the value of the coolant. o This represents the temperature difference between the inlet and outlet water of the main circulation system, where Δt o =△t o1 -△t o2 , where △t o1 Indicates the outlet temperature of the main cooling point, Δt o2 The value represents the temperature at the return port of the main cooling pump, ρ represents the density of the coolant, and C represents the specific heat of the coolant.

[0061] Preferred, such as Figure 4 Two cooling circulation branches, cirl1 and cirl2, are shown. In cooling circulation branch cirl1, the corresponding auxiliary cooling module includes auxiliary cooling pump PUMP1 and a second inlet and outlet water temperature detection module TS1. The branch access point a1 is connected to the corresponding auxiliary cooling pump PUMP1 and the return water port of the main cooling pump PUMP0 through an auxiliary liquid pipe to form cooling circulation branch cirl1. The second inlet and outlet water temperature detection module TS1 is connected to the outlet of auxiliary cooling pump PUMP1 and the outlet of auxiliary cooling point P1, respectively.

[0062] Specifically, for the cooling circulation branch cirl1: the coolant flows out from the main cooling node CY, is driven by the auxiliary cooling pump PUMP1 to dissipate heat from the auxiliary cooling point P1, and is driven by the main cooling pump PUMP0 to flow back to the main cooling node CY. The second inlet and outlet water temperature detection module TS1 detects the process temperature of the auxiliary cooling point P1 and controls the power output of the auxiliary cooling pump PUMP1 based on the detection results (the output power of the auxiliary cooling pump PUMP1 increases as the temperature measured by the second inlet and outlet water temperature detection module TS1 increases).

[0063] In the cooling circulation branch cirl2, the corresponding auxiliary cooling module includes the auxiliary cooling pump PUMP2 and the second inlet and outlet water temperature detection module TS2. The branch access point a2 is connected to the corresponding auxiliary cooling pump PUMP2 and the return water port of the main cooling pump PUMP0 through the auxiliary liquid pipe to form the cooling circulation branch cirl2. The second inlet and outlet water temperature detection module TS2 is connected to the outlet of the auxiliary cooling pump PUMP2 and the outlet of the auxiliary cooling point P2, respectively.

[0064] For cooling circulation branch cirl2: Coolant flows out from the main cooling node CY, is driven by the auxiliary cooling pump PUMP2 to dissipate heat from the auxiliary cooling point P2, and is driven by the main cooling pump PUMP0 to flow back to the main cooling node CY. The second inlet and outlet water temperature detection module TS2 detects the process temperature of the auxiliary cooling point P2 and controls the power output of the auxiliary cooling pump PUMP2 based on the detection results (the output power of the auxiliary cooling pump PUMP2 increases as the temperature measured by the second inlet and outlet water temperature detection module TS2 increases).

[0065] In a preferred embodiment, the inlet and outlet water temperature difference for each cooling circulation branch is determined using the following formula:

[0066] The second inlet and outlet water temperature detection module obtains the outlet temperature of the auxiliary cooling point and the outlet temperature of the auxiliary cooling pump, respectively. Based on the outlet temperature of the auxiliary cooling point and the outlet temperature of the auxiliary cooling pump, the inlet and outlet water temperature difference of the branch is determined. The inlet and outlet water temperature difference of the branch is the difference between the outlet temperature of the auxiliary cooling point and the outlet temperature of the auxiliary cooling pump.

[0067] In practical implementation, the target coolant flow rate for each cooling cycle branch is determined using the following formula:

[0068]

[0069] In this formula, L m Q represents the target secondary coolant flow rate. m This represents the required heat dissipation of the branch corresponding to the cooling circulation branch, Δt. m This represents the temperature difference between the inlet and outlet water of the branch, where △t m =△t m1 -△t m2 , where △t m1 Indicates the outlet temperature of the secondary cooling point, Δt m2 This indicates the outlet of the auxiliary cooling pump.

[0070] like Figure 4 The structure shown, combined with the above formula, allows us to determine the target secondary coolant flow rate L corresponding to the secondary cooling point P1. m1 The target secondary coolant flow rate L corresponding to the secondary cooling point P2 m2

[0071] In this application, the calculated target secondary coolant flow rate corresponding to each secondary cooling point must meet the following requirements:

[0072]

[0073] Where N represents the number of cooling circulation branches corresponding to a multi-pump liquid cooling system, L mi L0 represents the coolant flow rate required for the target branch corresponding to the i-th cooling cycle branch, and L0 represents the coolant flow rate through the heat dissipation module.

[0074] In a preferred embodiment, step S500 includes:

[0075] The first mapping relationship between the main coolant demand flow rate and the output power of the main cooling module, and the second mapping relationship between the branch coolant demand flow rate and the output power of the auxiliary cooling module are obtained respectively. Based on the first mapping relationship and the second mapping relationship, the first target output power and the second target output power are determined respectively.

[0076] Based on the same application concept, this application also provides a multi-pump liquid cooling system device corresponding to the multi-pump liquid cooling system method provided in the above embodiments. Since the principle of the device in this application is similar to the multi-pump liquid cooling system method in the above embodiments of this application, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be described again.

[0077] See also Figure 5 , Figure 5 This diagram illustrates a functional block diagram of a multi-pump liquid cooling system device according to an embodiment of this application. Figure 5 As shown, the device includes:

[0078] The first acquisition module 700 is used to acquire the temperature difference between the main circulation inlet and outlet water corresponding to the main cooling circulation branch through the main cooling module.

[0079] The first determining module 710 is used to determine the target main coolant flow rate corresponding to the main cooling circulation loop based on the engine system's required heat dissipation and the temperature difference between the main circulation inlet and outlet water.

[0080] The second acquisition module 720 is used to acquire the temperature difference between the inlet and outlet water of each cooling cycle branch through the auxiliary cooling module.

[0081] The second determining module 730 is used to determine the target coolant flow rate of each cooling cycle branch based on the branch heat dissipation requirement and the temperature difference between the inlet and outlet water of each branch.

[0082] The power determination module 740 is used to determine the first target output power corresponding to the main cooling module based on the target main coolant demand flow rate, and to determine the second target output power corresponding to the auxiliary cooling module based on the target branch coolant demand flow rate.

[0083] The drive module 750 is used to drive the main cooling module according to the first target output power and the auxiliary cooling module according to the second target output power, so that the main cooling module and the auxiliary cooling module provide the corresponding coolant flow rate required by the main cooling circulation loop and the cooling circulation branch respectively.

[0084] Based on the same application concept, please refer to Figure 6 , Figure 6 This diagram illustrates the structure of an electronic device according to an embodiment of this application. The electronic device 800 includes a processor 810, a memory 820, and a bus 830. The memory 820 stores machine-readable instructions executable by the processor 810. When the electronic device 800 is running, the processor 810 and the memory 820 communicate via the bus 830. The machine-readable instructions, when executed by the processor 810, perform the steps of the cooling control method based on a multi-pump liquid cooling system provided in any of the above embodiments.

[0085] Based on the same concept, this application also provides a computer-readable storage medium storing a computer program, which, when run by a processor, executes the steps of the cooling control method based on a multi-pump liquid cooling system provided in the above embodiments.

[0086] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems and devices described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division; in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the displayed or discussed mutual coupling or direct coupling or communication connection may be through some communication interfaces; the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms.

[0087] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0088] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0089] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a processor-executable, non-volatile, computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0090] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A cooling control method based on a multi-pump liquid cooling system, characterized in that: The multi-pump liquid cooling system is used to cool and dissipate heat for the engine system. The engine system includes a main cooling point and multiple auxiliary cooling points. The multi-pump liquid cooling system includes a main cooling module, multiple auxiliary cooling modules and a heat dissipation module. The main cooling module water outlet, the heat dissipation module and the main cooling module water return port are connected in sequence through a main liquid pipeline to form a main cooling circulation loop. A plurality of branch access points are arranged on the liquid pipeline between the water outlet of the main cooling module and the heat dissipation module. The plurality of branch access points correspond to the plurality of auxiliary cooling modules one by one. The branch access points are connected with the corresponding auxiliary cooling modules and the water return port of the main cooling module through the auxiliary liquid pipeline to form a cooling circulation branch. A main cooling node is arranged on the liquid pipeline between the water outlet of the main cooling module and the target branch access point. The target branch access point is the branch access point closest to the water outlet of the main cooling module. For each cooling circulation branch, a secondary cooling point is provided between the secondary cooling module in the cooling circulation branch and the return water port of the main cooling module. Wherein, the method comprises: The main cooling module is used to collect the main circulation inlet and outlet water temperature difference corresponding to the main cooling circulation branch; Determine the target main coolant demand flow rate corresponding to the main cooling circulation loop according to the required heat dissipation of the engine system and the temperature difference between the inlet and outlet water of the main circulation; The auxiliary cooling module collects the branch inlet and outlet water temperature difference corresponding to each cooling cycle branch; Determine the target branch coolant demand flow rate corresponding to each cooling cycle branch according to the branch required heat dissipation corresponding to each cooling cycle branch and the branch inlet and outlet water temperature difference; Determine a first target output power corresponding to the main cooling module according to the target main circuit coolant demand flow rate, and determine a second target output power corresponding to the auxiliary cooling module according to the target branch circuit coolant demand flow rate; The main cooling module is driven according to the first target output power and the auxiliary cooling module is driven according to the second target output power, so that the main cooling module and the auxiliary cooling module provide corresponding required coolant flow rates for the main cooling circulation loop and the cooling circulation branch respectively.

2. The method according to claim 1, characterized in that The required heat dissipation of the engine system is determined by the following formula: In this formula, Q0 represents the required heat dissipation of the engine system, η represents the percentage of the heat transferred from the engine system to the multi-pump liquid cooling system to the corresponding fuel heat energy of the engine system, and g e Indicates the fuel consumption rate of the engine system at rated power, P e Indicates the operating power corresponding to the engine system, h u Indicates the calorific value of fuel for the engine system.

3. The method according to claim 1, characterized in that The main cooling module includes a main cooling pump and a first inlet and outlet water temperature detection module corresponding to the main cooling circulation loop. The main cooling pump outlet, the heat dissipation module and the main cooling pump return port are connected in sequence through a main liquid pipeline to form a main cooling circulation loop. The main cooling node is arranged on the liquid pipeline between the main cooling pump outlet and the target branch access point. The first inlet and outlet water temperature detection modules are respectively connected to the main cooling pump return port and the main cooling point outlet. The main circulation inlet and outlet water temperature difference is determined by: The water outlet temperature of the main cooling point and the water return temperature of the main cooling pump are respectively obtained by the first inlet and outlet water temperature detection module; The main circulation inlet and outlet water temperature difference is determined according to the main cooling point water outlet temperature and the main cooling pump return water outlet temperature.

4. The method according to claim 3, characterized in that: The target main cooling fluid demand flow corresponding to the main cooling circulation loop is determined by the following formula: In this formula, L E represents the target main coolant flow rate, Q0 represents the required heat dissipation of the engine system, △t o represents the temperature difference between the inlet and outlet water of the main circulation, where △t o =△t o1 -△t o2 , where △t o1 Indicates the outlet temperature of the main cooling point, △t o2 represents the return water temperature of the main cooling pump, ρ represents the coolant density, and C represents the specific heat of the coolant.

5. The method according to claim 3, characterized in that: The auxiliary cooling module includes an auxiliary cooling pump and a second inlet and outlet water temperature detection module. The branch access point is connected to the corresponding auxiliary cooling pump and the return water port of the main cooling pump through an auxiliary liquid pipeline to form a cooling circulation branch. The second inlet and outlet water temperature detection module is respectively connected to the auxiliary cooling pump outlet and the auxiliary cooling point outlet. The branch inlet and outlet water temperature difference corresponding to each cooling cycle branch is determined by the following formula: The secondary cooling point water outlet temperature and the secondary cooling pump water outlet temperature are respectively obtained by the second inlet and outlet water temperature detection module; The inlet and outlet water temperature difference of the branch is determined according to the outlet water temperature of the auxiliary cooling point and the outlet water temperature of the auxiliary cooling pump.

6. The method according to claim 5, characterized in that The target branch coolant demand flow corresponding to each cooling cycle branch is determined by the following formula: In this formula, L m Indicates the target secondary coolant demand flow rate, Q m Indicates the required heat dissipation of the cooling cycle branch corresponding to the branch, △t m represents the branch inlet and outlet water temperature difference, where △t m =△t m1 -△t m2 , where △t m1 Indicates the outlet temperature of the auxiliary cooling point, △t m2 Indicates the water outlet of the auxiliary cooling pump.

7. The method according to claim 1, characterized in that The first target output power corresponding to the main cooling module and the second target output power corresponding to the auxiliary cooling module are determined in the following manner: Respectively obtaining a first mapping relationship between the required flow rate of the main cooling liquid and the output power of the main cooling module, and a second mapping relationship between the required flow rate of the branch cooling liquid and the output power of the auxiliary cooling module; A first target output power and a second target output power are determined according to the first mapping relationship and the second mapping relationship respectively.

8. A cooling control device based on a multi-pump liquid cooling system, characterized in that: The multi-pump liquid cooling system comprises a main cooling module, a plurality of auxiliary cooling modules and a heat dissipation module, wherein the water outlet of the main cooling module, the heat dissipation module and the water return port of the main cooling module are connected in sequence through a main liquid pipeline to form a main cooling circulation loop. A plurality of branch access points are arranged on the liquid pipeline between the water outlet of the main cooling module and the heat dissipation module. The plurality of branch access points correspond to the plurality of auxiliary cooling modules one by one. The branch access points are connected with the corresponding auxiliary cooling modules and the water return port of the main cooling module through the auxiliary liquid pipeline to form a cooling circulation branch. A main cooling node is arranged on the liquid pipeline between the water outlet of the main cooling module and the target branch access point. The target branch access point is the branch access point closest to the water outlet of the main cooling module. For each cooling circulation branch, a secondary cooling point is provided between the secondary cooling module in the cooling circulation branch and the return water port of the main cooling module. Wherein, the device comprises: The first acquisition module is used to acquire the main circulation inlet and outlet water temperature difference corresponding to the main cooling circulation branch through the main cooling module; The first determination module is used to determine the target main circuit coolant demand flow rate corresponding to the main cooling circulation loop according to the required heat dissipation of the engine system and the main circulation inlet and outlet water temperature difference; The second collection module is used to collect the branch inlet and outlet water temperature difference corresponding to each cooling cycle branch through the auxiliary cooling module; The second determination module is used to determine the target branch coolant demand flow rate corresponding to each cooling cycle branch according to the branch required heat dissipation corresponding to each cooling cycle branch and the branch inlet and outlet water temperature difference; A power determination module, used to determine a first target output power corresponding to the main cooling module according to a target main circuit coolant demand flow rate, and to determine a second target output power corresponding to the auxiliary cooling module according to a target branch circuit coolant demand flow rate; The driving module is used to drive the main cooling module according to the first target output power and drive the auxiliary cooling module according to the second target output power, so that the main cooling module and the auxiliary cooling module can provide the corresponding required coolant flow for the main cooling circulation loop and the cooling circulation branch respectively.

9. An electronic device, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate through the bus, and the machine-readable instructions are executed by the processor to execute the steps of the cooling control method based on a multi-pump liquid cooling system as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the cooling control method based on a multi-pump liquid cooling system according to any one of claims 1 to 7 are executed.

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