Method, apparatus and storage medium for controlling a variable runner cooling system

Abstract

This invention discloses a control method, apparatus, and storage medium for a variable flow cooling system. The method includes: acquiring system data of the vehicle's variable flow cooling system at the current moment; predicting the required coolant flow rate for the variable flow cooling system at a future moment based on the system data; determining the opening degree data of the electronic throttle valve of the variable flow cooling system at a future moment corresponding to the predicted flow rate data, wherein the electronic throttle valve is used to control the coolant flow rate, and the opening degree data characterizes the opening angle of the electronic throttle valve; controlling the electronic throttle valve to open at a future moment according to the opening degree data; and adjusting the cooling channels of the variable flow cooling system based on the opened electronic throttle valve, wherein the coolant is located within the cooling channels. This invention solves the technical problem of poor controllability of flow distribution in variable flow cooling systems.

Description

Technical Field

[0001] This invention relates to the field of cooling system control technology, and more specifically, to a control method, apparatus, and storage medium for a variable flow channel cooling system. Background Technology

[0002] Currently, cooling systems employ a simple pipe-channel design, increasing the power of the cooling motor to meet cooling and heat dissipation requirements under different conditions. However, the excessive redundancy in the flow design of this structure not only causes unnecessary energy waste but also leads to technical problems such as poor controllability of flow distribution in variable flow channel cooling systems.

[0003] There is currently no effective solution to the technical problem of poor controllability of flow distribution in the aforementioned variable flow channel cooling system. Summary of the Invention

[0004] This invention provides a control method, apparatus, and storage medium for a variable flow channel cooling system, which at least solves the technical problem of poor controllability of flow distribution in a variable flow channel cooling system.

[0005] According to one aspect of the invention, a control method for a variable flow cooling system is provided. The method may include: acquiring system data of the vehicle's variable flow cooling system at a current moment, wherein the system data includes at least one of the following: the system temperature of the variable flow cooling system, the cooling temperature of the coolant in the variable flow cooling system, and the vehicle's power demand data; based on the system data, predicting the predicted flow rate of coolant required by the variable flow cooling system at a future moment; determining the opening degree data of the electronic throttle valve of the variable flow cooling system at a future moment corresponding to the predicted flow rate data, wherein the electronic throttle valve is used to control the flow rate of the coolant, and the opening degree data is used to characterize the opening angle of the electronic throttle valve; controlling the electronic throttle valve to open at a future moment according to the opening degree data; and adjusting the cooling channels of the variable flow cooling system based on the opened electronic throttle valve, wherein the coolant is located within the cooling channels.

[0006] Optionally, based on system data, predicting the predicted flow rate of coolant required by the variable flow cooling system at future times includes: inputting system data into a prediction model for data prediction processing to obtain target system data of the variable flow cooling system at future times, wherein the target system data includes at least one of the following: target system temperature of the variable flow cooling system, target coolant temperature of the coolant in the variable flow cooling system, and target power demand data of the vehicle; and determining the predicted flow rate data based on the target system data.

[0007] Optionally, determining the predicted traffic data based on the target system data includes: inputting the target system data into a data matching model for data matching to obtain predicted traffic data that matches the target system data, wherein the data matching model is used at least to represent the mapping relationship between the target system data and the predicted traffic data.

[0008] Optionally, determining the opening data of the electronic throttle valve of the variable flow cooling system at a future time corresponding to the predicted flow rate data includes: determining the opening correction data of the electronic throttle valve based on the predicted flow rate data; and correcting the original opening data of the electronic throttle valve based on the opening correction data to obtain the opening data.

[0009] Optionally, based on the predicted flow rate data, the opening correction data of the electronic throttle valve is determined, including: acquiring the actual flow rate data of the coolant in the variable flow channel cooling system at a future time; and determining the opening correction data based on the actual flow rate data of the predicted flow rate data.

[0010] Optionally, the method may further include: determining the original opening data based on the predicted flow rate data and the power of the electric oil pump of the variable flow channel cooling system.

[0011] According to one aspect of the present invention, a control device for a variable flow cooling system is provided. The device may include: an acquisition unit for acquiring system data of the variable flow cooling system of a vehicle at a current moment, wherein the system data includes at least one of the following: the system temperature of the variable flow cooling system, the cooling temperature of the coolant in the variable flow cooling system, and the power demand data of the vehicle; a prediction unit for predicting, based on the system data, the predicted flow rate data of the coolant required by the variable flow cooling system at a future moment; a determination unit for determining the opening degree data of the electronic throttle valve of the variable flow cooling system at a future moment corresponding to the predicted flow rate data, wherein the electronic throttle valve is used to control the flow rate of the coolant, and the opening degree data is used to characterize the opening angle of the electronic throttle valve; a control unit for controlling the electronic throttle valve to open at a future moment according to the opening degree data; and an adjustment unit for adjusting the cooling channel of the variable flow cooling system based on the opened electronic throttle valve, wherein the coolant is located in the cooling channel.

[0012] According to another aspect of the present invention, a computer-readable storage medium is also provided, which may include a stored program, wherein, when the program is executed, the device where the computer-readable storage medium is located executes the control method of the variable flow channel cooling system of the present invention.

[0013] According to another aspect of the present invention, a processor is also provided. The processor is used to run a program, wherein the program executes the control method of the variable flow channel cooling system according to the embodiments of the present invention.

[0014] According to another aspect of the present invention, a vehicle is also provided for performing the control method of the variable flow cooling system of the present invention.

[0015] In this embodiment of the invention, system data of the vehicle's variable flow cooling system at the current moment is obtained, wherein the system data includes at least one of the following: the system temperature of the variable flow cooling system, the cooling temperature of the coolant in the variable flow cooling system, and the vehicle's power demand data; based on the system data, the predicted flow rate of coolant required by the variable flow cooling system in the future is predicted; the opening degree data of the electronic throttle valve of the variable flow cooling system corresponding to the predicted flow rate data in the future is determined, wherein the electronic throttle valve is used to control the flow rate of coolant, and the opening degree data is used to characterize the opening angle of the electronic throttle valve; the electronic throttle valve is controlled to open in the future according to the opening degree data; the cooling channel of the variable flow cooling system is adjusted based on the opened electronic throttle valve, wherein the coolant is in the cooling channel. In other words, the embodiments of the present invention first predict the required coolant flow rate of the variable flow channel cooling system in the future based on the system data of the variable flow channel cooling system at the current moment, then determine the opening data corresponding to the predicted flow rate data, and finally control the electronic throttle valve to open in the future moment according to the opening data. The cooling flow channel of the system is adjusted by the opened electronic throttle valve, so as to achieve the purpose of adjusting the cooling flow channel of the variable flow channel cooling system in the future moment according to the system data of the variable flow channel cooling system at the current moment. This solves the technical problem of poor controllability of flow distribution in the variable flow channel cooling system and achieves the technical effect of improving the controllability of flow distribution in the variable flow channel cooling system. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 This is a flowchart of a control method for a variable flow channel cooling system according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of a temperature control system configuration according to an embodiment of the present invention;

[0019] Figure 3 This is a flowchart of a temperature control method for a secondary system according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of a temperature control system block diagram according to an embodiment of the present invention;

[0021] Figure 5 This is a flowchart of a control method for a temperature control system according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of a control device for a variable flow channel cooling system according to an embodiment of the present invention. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] Example 1

[0026] According to an embodiment of the present invention, a control method for a variable flow channel cooling system is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0027] The control method of the variable flow channel cooling system according to an embodiment of the present invention will be described below.

[0028] Figure 1 This is a flowchart of a control method for a variable flow channel cooling system according to an embodiment of the present invention, such as... Figure 1 As shown, the method may include the following steps:

[0029] Step S101: Obtain the system data of the vehicle's variable flow cooling system at the current moment.

[0030] In the technical solution provided by step S101 of the present invention, system data of the variable flow cooling system of the vehicle at the current moment can be obtained. The system data may include at least one of the following: system temperature of the variable flow cooling system, cooling temperature of the coolant in the variable flow cooling system, and power demand data of the vehicle.

[0031] Optionally, the system temperature of the aforementioned variable flow cooling system may include the temperature of the variable flow cooling system itself and the temperature of the coolant within it. For example, the temperature of the variable flow cooling system may be 30 degrees Celsius (°C), and the cooling temperature of the coolant in the system may be -10 degrees Celsius (-10°C). The power demand data of the vehicle may be the overall vehicle power demand input data, for example, the AC current data for the overall vehicle power demand input may be 100 amperes (A). It should be noted that this is only an example of the system data acquired by the variable flow cooling system at the current moment, and does not specifically limit the specific data included in the system data acquired by the system at the current moment.

[0032] Step S102: Based on system data, predict the flow rate of coolant required by the variable flow channel cooling system at future times.

[0033] In the technical solution provided by step S102 of the present invention, based on the system data obtained in step S101, the predicted flow rate data of the coolant required by the variable flow channel cooling system at future times can be predicted, wherein the predicted flow rate data can be the overall flow rate demand data.

[0034] Optionally, the variable flow channel cooling system may include multiple motors, such as motor A and motor B. In this case, the predicted flow rate data mentioned above can be the sum of the coolant flow rate required by motor A at a future time and the coolant flow rate required by motor B at a future time. It should be noted that this is only an example and does not specifically limit the number of motors in the variable flow channel cooling system.

[0035] Optionally, the predicted coolant flow rate required by the aforementioned variable flow cooling system in the future can be determined by consulting the motor demand flow table. This table can be pre-generated based on data such as the motor's cooling temperature, coolant oil temperature, and the vehicle's power input current. For example, when the motor temperature is 50℃, the coolant temperature is -40℃, and the vehicle's power input current is 100A, the motor's demand flow rate under these conditions is 1.65. This is merely an example and does not impose specific limitations on the optimal parameter settings.

[0036] Step S103: Determine the opening degree data of the electronic throttle valve of the variable flow channel cooling system at a future time, corresponding to the predicted flow rate data.

[0037] In the technical solution provided by step S103 of the present invention, the opening degree data of the electronic throttle valve of the variable flow channel cooling system at future times can be further determined based on the predicted flow rate data of the coolant required by the variable flow channel cooling system at future times obtained in step S102. The electronic throttle valve can be used to control the flow rate of the coolant, and the opening degree data can be used to characterize the opening angle of the electronic throttle valve.

[0038] Optionally, determining the opening degree data of the electronic throttle valve of the variable flow cooling system corresponding to the predicted flow rate data at a future time can be implemented within the throttle valve control module. The throttle valve control module may include a motor, an electronic throttle valve for controlling the motor, and an electric oil pump power meter, etc.

[0039] Optionally, within the throttle valve control module, the basic opening value of the electronic throttle valve can be obtained by looking up the motor's required flow rate data in the electric oil pump power table. Then, based on the predicted flow rate data, the correction value for the electronic throttle valve's opening is determined. Finally, the basic opening value and the correction value are added together to obtain the aforementioned opening data. For example, if the motor's required flow rate data is 2.06, the obtained opening value could be 10°. It should be noted that this is merely an example and does not specify the method for determining the opening data of the electronic throttle valve in the variable flow cooling system corresponding to the predicted flow rate data at future moments.

[0040] Step S104: Control the electronic throttle valve to open at a future time according to the opening data.

[0041] In the technical solution provided by step S104 of the present invention, based on the opening data obtained in step S103, the electronic throttle valve can be controlled to open at a future time. For example, if the opening data obtained at time t1 is 10°, the electronic throttle valve can be controlled to open at time t2, where t2 is greater than t1. It should be noted that this is only an example of controlling the electronic throttle valve to open at a future time based on the obtained opening data, and does not specifically limit the specific implementation of controlling the electronic throttle valve to open at a future time. All methods of controlling the electronic throttle valve to open at a future time based on the opening data are within the protection scope of the present invention, and are not listed here.

[0042] Step S105: Adjust the cooling flow path of the variable flow path cooling system based on the opened electronic throttle valve.

[0043] In the technical solution provided by step S105 of the present invention, the electronic throttle valve obtained after being opened in step S104 can adjust the cooling channel of the variable flow channel cooling system, wherein the coolant is in the cooling channel.

[0044] Optionally, electronic throttle valves can be installed in the cooling pipeline. One or more electronic throttle valves in the cooling pipeline can be linked together. The position of the electronic throttle valves can be adjusted using a control module to achieve the purpose of changing the flow path of the cooling system, thereby improving the cooling performance of the cooling system.

[0045] In steps S101 to S105 of the present invention, system data of the vehicle's variable flow cooling system at the current moment is obtained, wherein the system data includes at least one of the following: the system temperature of the variable flow cooling system, the cooling temperature of the coolant in the variable flow cooling system, and the vehicle's power demand data; based on the system data, the predicted flow rate of coolant required by the variable flow cooling system in the future is predicted; the opening degree data of the electronic throttle valve of the variable flow cooling system corresponding to the predicted flow rate data in the future is determined, wherein the electronic throttle valve is used to control the flow rate of coolant, and the opening degree data is used to characterize the opening angle of the electronic throttle valve; the electronic throttle valve is controlled to open in the future according to the opening degree data; and the cooling flow channel of the variable flow cooling system is adjusted based on the opened electronic throttle valve, wherein the coolant is in the cooling flow channel. In other words, the embodiments of the present invention first predict the required coolant flow rate of the variable flow channel cooling system in the future based on the system data of the variable flow channel cooling system at the current moment, then determine the opening data corresponding to the predicted flow rate data, and finally control the electronic throttle valve to open in the future moment according to the opening data. The cooling flow channel of the system is adjusted by the opened electronic throttle valve, so as to achieve the purpose of adjusting the cooling flow channel of the variable flow channel cooling system in the future moment according to the system data of the variable flow channel cooling system at the current moment. This solves the technical problem of poor controllability of flow distribution in the variable flow channel cooling system and achieves the technical effect of improving the controllability of flow distribution in the variable flow channel cooling system.

[0046] The method described in this embodiment will be further described below.

[0047] As an optional embodiment, in step S102, the system data is input into the prediction model for data prediction processing to obtain the target system data of the variable flow channel cooling system at a future time; based on the target system data, the predicted flow rate data is determined.

[0048] In this embodiment, the prediction model can be a model that uses a prediction algorithm, and the target system data can be parameter values ​​used by the prediction model to predict the future duration of the variable flow cooling system. The target system data can include at least one of the following: the target system temperature of the variable flow cooling system, the target coolant temperature of the coolant in the variable flow cooling system, and the vehicle's target power demand data. For example, the target system temperature of the variable flow cooling system is 50°C, the target coolant temperature of the coolant in the variable flow cooling system is 10°C, and the vehicle's target power demand data can be the target AC current data of 100A for the vehicle's power demand input. This is only an example and does not specifically limit the specific values ​​of the target system data.

[0049] For example, the prediction algorithm used in the prediction model can be the Markov algorithm, and the basic equation of the Markov algorithm can be shown below:

[0050]

[0051]

[0052]

[0053] Among them, a j (n) represents the observation sequence value that can be used to represent time n, P ij Let a be the transition probability. i (n+1) represents the sequence value at time n+1, a(n) is the target parameter, k is the preset single-dimensional calculation iteration step size, i is the counting period, which is a natural number from 1 to k, j is the calculation dimension (when j=1, a(n) is the motor temperature, when j=2, a(n) is the coolant temperature, when j=3, a(n) is the vehicle input current data), and P can be a scaling factor (P>0).

[0054] In this embodiment, the system data of the vehicle's variable flow cooling system at the current moment can be input into the prediction model for data prediction processing to obtain the target system data of the variable flow cooling system at a future moment. Then, based on the target system data, the predicted flow rate data of the coolant required by the variable flow cooling system at a future moment can be determined.

[0055] As an optional implementation method, determining the predicted traffic data based on the target system data includes: inputting the target system data into a data matching model for data matching to obtain the predicted traffic data that matches the target system data.

[0056] In this embodiment, target system data can be input into a data matching model for data matching to obtain predicted flow data that matches the target system data. The data matching model can at least be used to represent the mapping relationship between the target system data and the predicted flow data, and the predicted flow data can be the minimum flow required by the motor at a fixed temperature.

[0057] Optionally, the data matching model described above can generate a motor demand flow table in advance based on data such as different motor temperature data, coolant temperature data, and vehicle power demand input data. For example, Table 1 is a motor demand flow table. As shown in Table 1, when the motor temperature is 50℃, the current value (A) in the motor demand flow table can include 0A, 100A, 200A, 300A, 400A, 500A, 600A, 700A, and 800A, and the coolant temperature can include -40℃, -30℃, -20℃, -10℃, 0℃, 10℃, 20℃, 30℃, 40℃, 50℃, 60℃, 70℃, and 80℃. When the current value is 100A and the coolant temperature is -40℃, the minimum flow required by the corresponding motor is 1.65, so the predicted flow data is 1.65.

[0058] Table 1. Flow Demand Table for a Type of Motor

[0059]

[0060] As an optional embodiment, determining the opening data of the electronic throttle valve of the variable flow channel cooling system corresponding to the predicted flow rate data at a future time includes: determining the opening correction data of the electronic throttle valve based on the predicted flow rate data; and correcting the original opening data of the electronic throttle valve based on the opening correction data to obtain the opening data.

[0061] In this embodiment, the original opening data can be the base opening value of the electronic throttle valve, and the opening correction data can be the opening correction value of the electronic throttle valve. Based on the predicted flow rate data, the opening correction data of the electronic throttle valve can be determined. Based on the aforementioned opening correction data, the original opening data of the electronic throttle valve can be corrected to obtain the final opening data.

[0062] Optionally, when correcting the original opening data of the electronic throttle valve based on the opening correction data, the opening data can be obtained by adding the original opening data to the opening correction data. It should be noted that this is merely a preferred embodiment for correcting the original opening data of the electronic throttle valve based on the opening correction data. The method for correcting the original opening data of the electronic throttle valve based on the opening correction data is not specifically limited here. Any method and process for correcting the original opening data of the electronic throttle valve based on the opening correction data is within the protection scope of the embodiments of this application, and will not be elaborated upon here.

[0063] As an optional embodiment, determining the opening correction data of the electronic throttle valve based on the predicted flow data includes: acquiring the actual flow data of the coolant in the variable flow channel cooling system at a future time; and determining the opening correction data based on the actual flow data of the predicted flow data.

[0064] In this embodiment, the actual flow rate data can be the measured flow rate data of the coolant in the variable flow channel cooling system. In the future, the actual flow rate data of the coolant in the variable flow channel cooling system can be obtained first, and then the opening correction data can be further determined based on the obtained actual flow rate data and the predicted flow rate data.

[0065] Optionally, in this embodiment, the opening correction value of the electronic throttle valve can be obtained by performing PI control on the predicted flow data and the actual flow data. PI control is a control method that uses the proportional and integral components of the control deviation between the given value and the actual output value to linearly combine the deviation to form a control quantity, thereby controlling the controlled object. It should be noted that this is only a preferred embodiment for determining the opening correction data based on the actual flow data from the predicted flow data. The method for determining the opening correction data based on the actual flow data from the predicted flow data is not specifically limited here. Any method and process for determining the opening correction data based on the actual flow data from the predicted flow data is within the protection scope of the embodiments of this application, and will not be elaborated here.

[0066] As an alternative implementation method, the initial opening data is determined based on the predicted flow rate data and the power of the electric oil pump of the variable flow channel cooling system.

[0067] In this embodiment, the basic opening value of the electronic throttle valve corresponding to the predicted flow rate data and the electric oil pump power of the variable flow channel cooling system can be found in a power lookup table, and this basic opening value is determined as the aforementioned original opening data. It should be noted that this content is only a preferred embodiment for determining the original opening data, and does not specifically limit the specific method for determining the original opening data. Any specific embodiment for determining the original opening data is within the protection scope of this invention, and will not be listed here.

[0068] Example 2

[0069] The technical solutions of the embodiments of the present invention will be illustrated below with reference to preferred embodiments.

[0070] Existing dual-motor gearbox cooling systems, whether for pure electric vehicles or hybrid vehicles, often employ simple pipe-channel designs to reduce costs while maintaining quality. While this ensures cost control, the controllability and precision of flow distribution have significant room for improvement. To meet the cooling requirements of different operating conditions and external environments, designers often increase the power of the cooling motor and the redundancy of the flow valve design. However, excessive redundancy in flow design and applying the same output under different boundary conditions leads to unnecessary energy waste and limited cooling effectiveness, resulting in the technical problem of poor flow distribution controllability in variable flow channel cooling systems. Therefore, to address these issues, this invention provides a control method for variable flow channel cooling systems, thereby improving the controllability of flow distribution in these systems.

[0071] Figure 2 This is a schematic diagram of a temperature control system configuration according to an embodiment of the present invention, as shown below. Figure 2 As shown, the configuration diagram may include: a temperature control system 201, a motor 202, a motor 203, a temperature sensor 204, a temperature sensor 205, a cooling pipe for the motor 206, a cooling pipe for the motor 207, a flow sensor 208, a flow sensor 209, an electronic throttle valve 210, an electronic throttle valve 211, a valve device 212, a valve device passage 213, a valve device passage 214, a valve device passage 215, a heat exchanger 216, a flow regulating valve 217, an electric water pump 218, a bypass flow path 219, an electric oil pump 220, a coolant temperature sensor 221, and an oil filter 222.

[0072] In this embodiment, the temperature control system includes a motor 202, a motor 203, a temperature sensor 204, a temperature sensor 205, a cooling pipe 206 for the motor, a cooling pipe 207 for the motor, a flow sensor 208, a flow sensor 209, an electronic throttle valve 210, an electronic throttle valve 211, a valve device 212, a valve device passage 213, a valve device passage 214, a valve device passage 215, a bypass flow path 219, an electric oil pump 220, a coolant temperature sensor 221, and an oil filter 222.

[0073] Optionally, in the above system, the hardware devices corresponding to the motor 202 include: a temperature sensor 204 for measuring temperature, a corresponding cooling pipe 206 for the motor, and a flow sensor 208 for measuring the flow data passing through the electronic throttle valve 210.

[0074] Optionally, in the above system, the hardware devices corresponding to the motor 203 include: a temperature sensor 205 for measuring temperature, a corresponding cooling pipe 207 for the motor, and a flow sensor 209 for measuring the flow data passing through the electronic throttle valve 211.

[0075] Optionally, the valve device 212 may include: valve device passage 213, valve device passage 214, and valve device passage 215. Valve device passage 213 is used to control the flow of fluid through the heat exchanger device, and subsequently control the electric water pump device and the flow regulating valve device. Valve device passage 214 is used to control the flow of fluid through the bypass path, and subsequently control the electric water pump device and the flow regulating valve device. Valve device passage 215 is used to control the flow of fluid through the electronic throttle valve 210 and the electronic throttle valve 211 to achieve the purpose of controlling the flow rate.

[0076] Optionally, a variable flow channel transmission cooling system may include cooling pipes, electronic throttle valves, a control motor, and a control module. Electronic throttle valves may be installed in the cooling pipes, and the cooling pipes may be connected through one or more electronic throttle valves. The diameter of the non-rigid cooling pipe driven by the motor in the electronic throttle valve can be adjusted. By adjusting the position of the electronic throttle valve through the control module, the flow channel of the cooling system can be controlled. Based on the value of the temperature sensor arranged near the motor and the corresponding operating conditions of the transmission of the vehicle, the corresponding control strategy can be calculated and adjusted and corrected according to different cooling conditions (coolant temperature, flow rate).

[0077] Figure 3 This is a flowchart of a temperature control method for a secondary system according to an embodiment of the present invention, such as... Figure 3 As shown, the method includes the following steps:

[0078] Step S301: Coolant temperature T0 ≤ target temperature Tt.

[0079] In this embodiment, according to Figure 2 The system judges whether the coolant temperature T0 is less than or equal to the target temperature Tt by collecting the coolant temperature sensor. If the judgment result is "yes", then step S302 is executed; if the judgment result is "no", then step S303 is executed.

[0080] Step S302: Use a valve device to control the flow of fluid into the bypass path.

[0081] In this embodiment, if the judgment result of step S301 is "yes", then it can be utilized Figure 2 The valve device controls the flow of fluid into the bypass path.

[0082] Step S303: Use a valve device to control the flow of fluid through the heat exchanger device.

[0083] In this embodiment, if the judgment result of step S301 is "no", then it can be utilized Figure 2 The valve device controls the flow of fluid through the heat exchanger device.

[0084] Step S304: Control the pump device and the throttle valve device.

[0085] In this embodiment, after controlling the flow of fluid into the bypass path or the flow of fluid through the heat exchanger device using a valve device, the pump device and the throttle valve device can be controlled to achieve the purpose of temperature control of the secondary system.

[0086] Figure 4 This is a schematic diagram of a temperature control system block diagram according to an embodiment of the present invention, such as... Figure 4 As shown, the schematic diagram of the temperature control system block diagram may include: motor temperature sensor 401, coolant temperature sensor 403, vehicle power demand input 404, flow sensor 405, flow sensor 406, control device 407, electric oil pump 408, electronic throttle valve 409, electronic throttle valve 410, and valve device 411. Among them, the control device 407 may include control demand module 4071, valve control module 4072, oil pump control module 4073, and throttle valve control module 4074.

[0087] In this embodiment, the motor temperature data collected by the motor temperature sensor 401 and the temperature sensor 402, the coolant temperature data collected by the coolant temperature sensor, and the vehicle power demand input data are respectively imported into the control demand module. The control demand module can use a prediction algorithm to output the possible parameters of the set future time in real time, and the obtained parameters can guide the subsequent cooling control strategy, thus playing a predictive control role.

[0088] Optionally, the valve control module is used to control the outflow of fluid, the oil pump control module is used to obtain the optimal value of the required power of the electric oil pump, the throttle valve control module is used to obtain the final output of the cooling system, the electric oil pump is used to control the overall flow of the cooling system according to the optimal value of the required power of the electric oil pump, and the valve device is used to control the inflow path of fluid, thereby achieving the purpose of controlling the pump device and the throttle valve device.

[0089] Figure 5 This is a flowchart of a control method for a temperature control system according to an embodiment of the present invention, such as... Figure 5 As shown, the specific process and methods can be combined with Figure 4 The temperature control system block diagram is explained below. First, the motor temperature sensor and the motor temperature data collected from the temperature sensor, the coolant temperature data collected from the coolant temperature sensor, and the vehicle power demand input data are respectively imported into the control demand module, which includes a predictive algorithm model, and outputs the possible parameters for the set future time in real time.

[0090] Optionally, the prediction algorithm in the prediction algorithm model can be the Markov algorithm, and this algorithm is applied in the prediction model, which exists in the control requirement module. Then, the basic equation of the Markov algorithm can be:

[0091]

[0092]

[0093]

[0094] In the above formula, a(n) is the target parameter (motor temperature data / coolant temperature data / vehicle input current data), k is the preset single-dimensional calculation iteration step size, i is the counting period, which is a natural number from 1 to k, j is the calculation dimension (when j=1, a(n) is motor temperature data, when j=2, a(n) is coolant temperature data, when j=3, a(n) is vehicle input current data), and P is the scaling factor (P>0).

[0095] Optionally, the control demand module has a predictive function based on a temporal algorithm. It can calculate the specific value of a parameter at finite future times using (but not limited to) Markov algorithms or temporal interpolation Latin square extrapolation based on the past and present values ​​of a certain parameter, and formulate a corresponding control strategy accordingly. The application of the above algorithm presupposes a spatiotemporal evolution process without aftereffects. The system is predicted using the basic formula algorithm corresponding to the control demand module, and the prediction result with the highest probability of prediction is applied to the entire control system to guide subsequent cooling control strategies, thus playing a predictive control role. After training, the predictive model can obtain optimal parameter values.

[0096] Optionally, for the predicted parameters output by the above algorithm, the optimal parameters for the corresponding motor A demand flow data and motor B demand flow data are found using the lookup method shown in Table 1. The motor A demand flow data and motor B demand flow data are added together to obtain the overall flow demand data, which is then imported into the oil pump control module. Based on the demand, the optimal value of the electric oil pump's required power is obtained and applied to the electric oil pump to control the overall flow data of the cooling system.

[0097] Optionally, within the throttle valve control module, the basic opening value of throttle valve A can be obtained by looking up the required flow rate data of motor A and the power data of the electric oil pump. The required flow rate data of motor A and the measured flow rate data of motor A are then used for PI control to obtain the corrected opening value of throttle valve A. Subsequently, the basic opening value and the corrected opening value of throttle valve A are added together to obtain the opening data of throttle valve A. This opening data is used as the final output of the system to control the electronic throttle valve A for corresponding flow regulation and system control. The same principle applies to the motor B side.

[0098] In the above embodiment, data is first acquired and input into a model containing a prediction algorithm to obtain parameter values ​​for the corresponding data. Based on the obtained parameter values, a table can be looked up to obtain the motor's required flow rate data. The overall flow rate requirement data is calculated based on the required flow rate data, and the optimal value of the electric oil pump's required power data is obtained based on this data. Based on the obtained measured flow rate data, PI control can be used to obtain the electronic throttle valve's opening correction value. Based on the motor's required flow rate data and the electric oil pump's required power data, a table can be looked up to obtain the electronic throttle valve's basic opening value. The electronic throttle valve's basic opening value and the electronic throttle valve's opening correction value are added together to obtain the electronic throttle valve's opening data. This solves the technical problem of poor flow distribution controllability in variable flow channel cooling systems and achieves the technical effect of improving the flow distribution controllability in variable flow channel cooling systems.

[0099] Example 3

[0100] According to an embodiment of the present invention, a control device for a variable flow channel cooling system is provided. It should be noted that this control device for a variable flow channel cooling system can be used to execute a control method for a variable flow channel cooling system as described in Embodiment 1.

[0101] Figure 6 This is a schematic diagram of a control device for a variable flow channel cooling system according to an embodiment of the present invention, such as... Figure 6 As shown, a control device 600 for a variable flow channel cooling system may include: an acquisition unit 601, a prediction unit 602, a determination unit 603, a control unit 604, and an adjustment unit 605.

[0102] The acquisition unit 601 is used to acquire system data of the vehicle's variable flow cooling system at the current moment, wherein the system data includes at least one of the following: the system temperature of the variable flow cooling system, the cooling temperature of the coolant in the variable flow cooling system, and the vehicle's power demand data.

[0103] The prediction unit 602 is used to predict the flow rate of coolant required by the variable flow channel cooling system at future times based on system data.

[0104] The determining unit 603 is used to determine the opening degree data of the electronic throttle valve of the variable flow channel cooling system at a future time, corresponding to the predicted flow rate data. The electronic throttle valve is used to control the flow rate of the coolant, and the opening degree data is used to characterize the opening angle of the electronic throttle valve.

[0105] Control unit 604 is used to control the electronic throttle valve to open at a future time according to the opening data.

[0106] The regulating unit 605 is used to regulate the cooling channels of the variable flow channel cooling system based on the opened electronic throttle valve, wherein the coolant is in the cooling channels.

[0107] Optionally, the prediction unit 602 includes: an acquisition module for inputting system data into the prediction model for data prediction processing to obtain target system data of the variable flow cooling system at a future time, wherein the target system data includes at least one of the following: the target system temperature of the variable flow cooling system, the target coolant temperature of the coolant in the variable flow cooling system, and the target power demand data of the vehicle; and a first determination module for determining the predicted flow rate data based on the target system data.

[0108] Optionally, the first determining module may further include: a first obtaining submodule, used to input the target system data into the data matching model for data matching to obtain predicted flow data that matches the target system data, wherein the data matching model is at least used to represent the mapping relationship between the target system data and the predicted flow data.

[0109] Optionally, the determining unit 603 may further include: a second determining module, used to determine the opening correction data of the electronic throttle valve based on the predicted flow data; and a correction module, used to correct the original opening data of the electronic throttle valve based on the opening correction data to obtain the opening data.

[0110] Optionally, the second determining module may further include: a second acquiring submodule, used to acquire the actual flow rate data of the coolant in the variable flow channel cooling system at a future time; and a determining submodule, used to determine the opening correction data based on the actual flow rate data of the predicted flow rate data.

[0111] Optionally, the determining unit 603 may further include: a third determining module, used to determine the original opening data based on the predicted flow rate data and the electric oil pump power of the variable flow channel cooling system.

[0112] In this embodiment, an acquisition unit is used to acquire system data of the vehicle's variable flow cooling system at the current moment, wherein the system data includes at least one of the following: the system temperature of the variable flow cooling system, the cooling temperature of the coolant in the variable flow cooling system, and the vehicle's power demand data; a prediction unit is used to predict the predicted flow rate data of the coolant required by the variable flow cooling system in the future based on the system data; a determination unit is used to determine the opening degree data of the electronic throttle valve of the variable flow cooling system in the future moment corresponding to the predicted flow rate data, wherein the electronic throttle valve is used to control the flow rate of the coolant, and the opening degree data is used to characterize the opening angle of the electronic throttle valve; a control unit is used to control the electronic throttle valve to open in the future moment according to the opening degree data; and an adjustment unit is used to adjust the cooling channel of the variable flow cooling system based on the opened electronic throttle valve, wherein the coolant is in the cooling channel, thereby solving the technical problem of poor flow distribution controllability in the variable flow cooling system and achieving the technical effect of improving the flow distribution controllability in the variable flow cooling system.

[0113] Example 4

[0114] According to an embodiment of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device where the computer-readable storage medium is located to execute the control method of the variable flow channel cooling system in Embodiment 1.

[0115] Example 5

[0116] According to an embodiment of the present invention, a processor is also provided for running a program, wherein the program executes the control method of the variable flow channel cooling system in Embodiment 1 during runtime.

[0117] Example 6

[0118] According to an embodiment of the present invention, a vehicle is also provided for performing the control method of the variable flow cooling system in Embodiment 1.

[0119] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0120] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0121] In the several embodiments provided by this invention, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed can be through some interfaces; the indirect coupling or communication connection of units or modules can be electrical or other forms.

[0122] 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 units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0123] Furthermore, the functional units in the various embodiments of the present invention 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. The integrated unit can be implemented in hardware or as a software functional unit.

[0124] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or 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 of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0125] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A control method for a variable flow channel cooling system, characterized in that, include: Acquire system data of the vehicle's variable flow cooling system at the current moment, wherein the system data includes: the system temperature of the variable flow cooling system, the cooling temperature of the coolant in the variable flow cooling system, and the power demand data of the vehicle. Based on the system data, the predicted flow rate of the coolant required by the variable flow channel cooling system at future times is predicted, and the predicted flow rate is the minimum flow rate required by the motor at a fixed temperature. Determine the opening degree data of the electronic throttle valve of the variable flow channel cooling system at a future time corresponding to the predicted flow rate data, wherein the electronic throttle valve is used to control the flow rate of the coolant, and the opening degree data is used to characterize the opening angle of the electronic throttle valve; The electronic throttle valve is controlled to open at the future time according to the opening data; The cooling channel of the variable flow channel cooling system is adjusted based on the opened electronic throttle valve, wherein the coolant is located in the cooling channel; Based on the system data, predicting the predicted flow rate of the coolant required by the variable flow cooling system at future times includes: predicting target system data based on the system data, wherein the target system data includes: the target system temperature of the variable flow cooling system, the target coolant temperature of the coolant in the variable flow cooling system, and the target power requirement data of the vehicle; inputting the target system data into a data matching model for data matching to obtain the predicted flow rate data that matches the target system data, wherein the data matching model is at least used to represent the mapping relationship between the target system data and the predicted flow rate data; The method further includes: determining the original opening data of the electronic throttle valve by looking up a table based on the predicted flow rate data and the electric oil pump power of the variable flow channel cooling system, wherein the original opening data is used to determine the opening data.

2. The method according to claim 1, characterized in that, Predicting target system data based on the aforementioned system data includes: The system data is input into the prediction model for data prediction processing to obtain the target system data of the variable flow channel cooling system at the future time.

3. The method according to claim 1, characterized in that, Determining the opening degree data of the electronic throttle valve of the variable flow cooling system at the future time corresponding to the predicted flow rate data includes: Based on the predicted flow rate data, the opening correction data of the electronic throttle valve is determined; Based on the opening correction data, the original opening data of the electronic throttle valve is corrected to obtain the opening data.

4. The method according to claim 3, characterized in that, Based on the predicted flow rate data, the opening correction data of the electronic throttle valve is determined, including: At the future time, acquire the actual flow rate data of the coolant in the variable flow channel cooling system; Based on the actual flow data of the predicted flow data, the opening correction data is determined.

5. A control device for a variable flow channel cooling system, characterized in that, include: The acquisition unit is used to acquire system data of the vehicle's variable flow cooling system at the current moment, wherein the system data includes: the system temperature of the variable flow cooling system, the cooling temperature of the coolant in the variable flow cooling system, and the power demand data of the vehicle. The prediction unit is used to predict the predicted flow rate of the coolant required by the variable flow channel cooling system at a future time based on the system data. The predicted flow rate is the minimum flow rate required by the motor at a fixed temperature. A determining unit is used to determine the opening degree data of the electronic throttle valve of the variable flow channel cooling system at a future time corresponding to the predicted flow rate data, wherein the electronic throttle valve is used to control the flow rate of the coolant, and the opening degree data is used to characterize the opening angle of the electronic throttle valve. The control unit is configured to control the electronic throttle valve to open at the future time according to the opening data; An adjustment unit is used to adjust the cooling channel of the variable flow channel cooling system based on the opened electronic throttle valve, wherein the coolant is in the cooling channel; The prediction unit is further configured to predict target system data based on the system data, wherein the target system data includes: the target system temperature of the variable flow cooling system, the target coolant temperature of the coolant in the variable flow cooling system, and the target power demand data of the vehicle; the target system data is input into a data matching model for data matching to obtain the predicted flow data that matches the target system data, wherein the data matching model is at least used to represent the mapping relationship between the target system data and the predicted flow data; The determining unit is further configured to determine the original opening data of the electronic throttle valve by looking up a table based on the predicted flow rate data and the electric oil pump power of the variable flow channel cooling system, and the original opening data is used to determine the opening data.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the control method of the variable flow cooling system according to any one of claims 1 to 4.

7. A processor, characterized in that, The processor is used to run a program, wherein the program, when run by the processor, executes the control method of the variable flow channel cooling system according to any one of claims 1 to 4.

8. A vehicle, characterized in that, A control method for performing the variable flow channel cooling system according to any one of claims 1 to 4.

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