Vehicle, control method and device thereof and readable storage medium

Abstract

The invention discloses a vehicle, a control method and device thereof and a readable storage medium, and relates to the technical field of vehicles. The control method of the vehicle comprises the steps that in the running process of the vehicle, the first temperature of a battery and the second temperature of a power distribution device are detected; under the condition that the first temperature is larger than a first threshold value and the second temperature is larger than a second threshold value, a first flow value is determined according to the first temperature, and a second flow value is determined according to the second temperature; adjusting the flow of the cooling liquid between the cooling liquid distribution device and the first radiator to a first flow value; and the flow of the cooling liquid between the cooling liquid distribution device and the second radiator is adjusted to be the second flow value. The cooling efficiency of the vehicle is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, and in particular to a vehicle, a control method and device thereof, and a readable storage medium. BACKGROUND

[0002] At present, the popularity rate of electric vehicles is increasing, but in the driving process of the electric vehicles, a large amount of heat energy is generated in the batteries, power distribution devices and other components in the vehicle, which will affect the normal operation of the electric vehicles, and even cause circuit failure of the electric vehicles. In the conventional case, the electric vehicles are provided with cooling devices to cool the batteries, power distribution devices and other components, but the existing vehicle control method has the technical problem of low cooling efficiency. SUMMARY

[0003] The embodiments of the present application provide a vehicle, a control method and device thereof, and a readable storage medium, which are used to solve the technical problem of low cooling efficiency in the prior art.

[0004] In a first aspect, the embodiments of the present application provide a control method of a vehicle, the vehicle comprising a battery, a power distribution device, a first radiator, a second radiator and a cooling liquid distribution device, the first radiator being configured to cool the battery, the second radiator being configured to cool the power distribution device, and the cooling liquid distribution device being configured to adjust the flow of cooling liquid in the first radiator and the second radiator, the method comprising: detecting a first temperature of the battery and a second temperature of the power distribution device during operation of the vehicle; in a case where the first temperature is greater than a first threshold value and the second temperature is greater than a second threshold value, determining a first flow value according to the first temperature, and determining a second flow value according to the second temperature; adjusting the flow of cooling liquid between the cooling liquid distribution device and the first radiator to the first flow value; adjusting the flow of cooling liquid between the cooling liquid distribution device and the second radiator to the second flow value.

[0005] In some embodiments, determining the first flow value according to the first temperature comprises: determining a difference between the first temperature and the first threshold value to obtain a first difference value; determining a temperature-flow ratio coefficient corresponding to the first radiator; determining a product of the first difference value and the temperature-flow ratio coefficient to determine the first flow value.

[0006] In some embodiments, determining the second flow value according to the second temperature comprises: determining a plurality of temperature intervals and a plurality of preset flow values corresponding to the second radiator, the plurality of temperature intervals corresponding to the plurality of preset flow values one by one; In the plurality of temperature intervals, a temperature interval in which the second temperature is located is determined as a target temperature interval; In the plurality of preset flow values, a preset flow value corresponding to the target temperature interval is determined as a second flow value.

[0007] In some embodiments, in a case where the first temperature is greater than a first threshold value and the second temperature is greater than a second threshold value, the method further comprises: obtaining a maximum flow value of the cooling liquid output by the cooling liquid distribution device; In a case where the flow of the cooling liquid between the cooling liquid distribution device and the second heat sink is adjusted to the maximum flow value, the temperature of the power distribution device is re-detected to obtain a third temperature; In a case where the third temperature is less than the second threshold value, the flow of the cooling liquid between the cooling liquid distribution device and the first heat sink is adjusted to the maximum flow value.

[0008] In some embodiments, the vehicle further comprises a first valve arranged between the cooling liquid distribution device and the first heat sink, and after the flow of the cooling liquid between the cooling liquid distribution device and the first heat sink is adjusted to the first flow value, the method further comprises: re-detecting the temperature of the battery to obtain a fourth temperature; In a case where the third temperature is less than the first threshold value, the first valve is closed to stop the cooling liquid distribution device from transmitting the cooling liquid to the first heat sink.

[0009] In some embodiments, the vehicle further comprises a second valve arranged between the cooling liquid distribution device and the second heat sink, and after the flow of the cooling liquid between the cooling liquid distribution device and the second heat sink is adjusted to the second flow value, the method further comprises: re-detecting the temperature of the power distribution device to obtain a fifth temperature; In a case where the fifth temperature is less than the second threshold value, the second valve is closed to stop the cooling liquid distribution device from transmitting the cooling liquid to the second heat sink.

[0010] The control method of the vehicle in the embodiments ensures the numerical accuracy of the first flow value and the second flow value, and then adjusts the flow of the cooling liquid between the cooling liquid distribution device and the first heat sink to the first flow value and adjusts the flow of the cooling liquid between the cooling liquid distribution device and the second heat sink to the second flow value, thereby improving the cooling efficiency of the vehicle.

[0011] A second aspect of the embodiments of the present application provides another control device of a vehicle, comprising a processor and a memory, and the memory stores a computer program which, when executed by the processor, implements the steps of the control method of the vehicle in any of the above embodiments. Therefore, the control device of the vehicle has all the beneficial effects of the control method of the vehicle in any of the above embodiments, which will not be described here again.

[0012] According to a third aspect of the embodiments of the present application, a readable storage medium is provided, which stores a program or instructions, and the program or instructions are executed by a processor to implement the steps of the control method of the vehicle in any of the above embodiments. Therefore, the readable storage medium has all the beneficial effects of the control method of the vehicle in any of the above embodiments, which will not be repeated here.

[0013] According to a fourth aspect of the embodiments of the present application, a vehicle is provided, which comprises: a battery and a power distribution device, the power distribution device being configured to distribute the electrical energy of the battery; a first radiator configured to cool the battery, a second radiator configured to cool the power distribution device, and a coolant distribution device configured to adjust the flow of the coolant in the first radiator and the second radiator; a control device of the vehicle as defined in the second aspect above. Therefore, the control device of the vehicle as defined in the second aspect above has all the beneficial technical effects, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0015] Figure 1 a flow chart of the control method of the vehicle provided by the embodiments of the present application; Figure 2 a structural block diagram of the control device of the vehicle provided by the embodiments of the present application; Figure 3 a structural schematic diagram of the vehicle provided by the embodiments of the present application; wherein, Figure 3 The correspondence between the reference signs and the component names in the drawings is as follows: 800 vehicle, 801 battery, 802 power distribution device, 803 first radiator, 804 second radiator, 805 thermal management system, 806 first valve, 807 second valve, 808 battery management system, 809 power domain controller. DETAILED DESCRIPTION

[0016] In order to better understand the technical solutions provided by the embodiments of the present specification, the technical solutions of the embodiments of the present specification will be described in detail below through the accompanying drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present specification and the embodiments are detailed descriptions of the technical solutions of the embodiments of the present specification, and are not limitations of the technical solutions of the present specification. In the case of no conflict, the technical features in the embodiments of the present specification and the embodiments can be combined with each other.

[0017] In this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... " does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element. The term "two or more" includes two or more than two.

[0018] In some embodiments, as shown in Figure 1 A control method of a vehicle is provided in the embodiments of the present application, comprising: Step S101, detecting a first temperature of a battery and a second temperature of a power distribution device respectively during operation of the vehicle; Step S102, in the case that the first temperature is greater than a first threshold value and the second temperature is greater than a second threshold value, determining a first flow value according to the first temperature, and determining a second flow value according to the second temperature; Step S103, adjusting the flow of cooling liquid between the cooling liquid distribution device and the first radiator to the first flow value; Step S104, adjusting the flow of cooling liquid between the cooling liquid distribution device and the second radiator to the second flow value.

[0019] In this embodiment, a control method of a vehicle is provided, the vehicle comprising a battery, a power distribution device, a first radiator, a second radiator, and a cooling liquid distribution device, wherein the first radiator is used to cool the battery, the second radiator is used to cool the power distribution device, and the cooling liquid distribution device is used to adjust the flow of cooling liquid in the first radiator and the second radiator.

[0020] Exemplarily, the vehicle can be an electric unmanned vehicle.

[0021] Exemplarily, the cold liquid distribution device is used to deliver the cooling liquid to the first radiator and the second radiator.

[0022] Exemplarily, the cooling liquid can be a chemical reagent or cooling water.

[0023] Exemplarily, the battery can be a power battery of a vehicle, and the first radiator can be a liquid cooling plate of the battery.

[0024] Exemplarily, the power distribution device can be a high-voltage power distribution box, and the second radiator can be a liquid cooling plate of the high-voltage power distribution box.

[0025] Exemplarily, the high-voltage power distribution box can include a plurality of relays, which can be a main positive relay, a main negative relay, a fast charging relay, and the like of the power battery.

[0026] Exemplarily, the relays are fixed on the brazed aluminum blocks on the upper liquid cooling plate of the power battery. The thermal conductivity of aluminum is dozens of times that of traditional thermal conductive glue / thermal conductive pads, which can greatly improve the heat dissipation capacity of the relay contacts and the connection bus bar. When the vehicle is in a fast charging, discharging, or the like state, the corresponding circuit relays are closed, the high-voltage relay high-voltage signal sampling point is actuated, and the actuation state is transmitted to the power battery BMS (battery management system), the BMS transmits the signal to the vehicle power domain controller, and the power domain controller controls the vehicle thermal management system.

[0027] In the process of vehicle operation, the temperature of the battery is detected to obtain a first temperature, and the temperature of the power distribution device is detected to obtain a second temperature, wherein the first temperature is the temperature of the battery, and the second temperature is the temperature of the power distribution device.

[0028] Exemplarily, the vehicle is provided with a first temperature sensor and a second temperature sensor, the first temperature sensor is used to detect the temperature of the battery, and the second temperature sensor is used to detect the temperature of the power distribution device.

[0029] Exemplarily, the first temperature can be the temperature of the battery cell.

[0030] Exemplarily, the second temperature can be the temperature of the relay in the power distribution device.

[0031] A first threshold value and a second threshold value are obtained, wherein the first threshold value is a temperature threshold value of the battery, and the second threshold value is a temperature threshold value of the power distribution device.

[0032] Exemplarily, the first threshold value can be a maximum temperature threshold value 40℃ of the battery.

[0033] Exemplarily, the first threshold value can be an average temperature threshold value 38℃ of the battery.

[0034] Exemplarily, the second threshold value can be a maximum temperature threshold value 105℃ of the power distribution device.

[0035] In a case where the first temperature is greater than the first threshold value and the second temperature is greater than the second threshold value, a first flow value is determined according to the first temperature, and a second flow value is determined according to the second temperature, wherein the first flow value is a flow value corresponding to the battery, and the second flow value is a flow value corresponding to the power distribution device.

[0036] Exemplarily, the unit of the first flow value can be cubic centimeters per second.

[0037] Exemplarily, the unit of the second flow value can be cubic centimeters per second.

[0038] Exemplarily, in a case where the first temperature is greater than the first threshold value and the second temperature is less than the second threshold value, it is indicated that the temperature of the power distribution device is not high, and cooling of the power distribution device is not required, and only the first flow value is determined according to the first temperature.

[0039] Exemplarily, in a case where the first temperature is less than the first threshold value and the second temperature is greater than the second threshold value, it is indicated that the temperature of the battery is not high, and cooling of the battery is not required, and only the second flow value is determined according to the second temperature.

[0040] Exemplarily, in a case where the first temperature is less than the first threshold value and the second temperature is less than the second threshold value, it is indicated that the temperatures of the battery and the power distribution device are not high, and cooling of the battery and the power distribution device is not required.

[0041] The flow of the cooling liquid between the cooling liquid distribution device and the first radiator is adjusted to the first flow value, and the flow of the cooling liquid between the cooling liquid distribution device and the second radiator is adjusted to the second flow value.

[0042] Exemplarily, in a case where the first temperature is greater than the first threshold value and the second temperature is less than the second threshold value, only the flow of the cooling liquid between the cooling liquid distribution device and the first radiator is adjusted to the first flow value.

[0043] Exemplarily, in a case where the first temperature is less than the first threshold value and the second temperature is greater than the second threshold value, only the flow of the cooling liquid between the cooling liquid distribution device and the second radiator is adjusted to the second flow value.

[0044] Exemplarily, the priority of the power distribution device in the vehicle is higher than that of the battery, and therefore, the power distribution device needs to be cooled first, and then the battery is cooled.

[0045] It should be noted that in the case that the first temperature is greater than the first threshold value and the second temperature is greater than the second threshold value, the first flow value of the first radiator and the second flow value of the second radiator are determined according to the first temperature of the battery and the second temperature of the power distribution device in the embodiment, which ensures the numerical accuracy of the first flow value and the second flow value, and at the same time, the embodiment optimizes the cold liquid distribution efficiency of the cold liquid distribution device for the first radiator and the second radiator, thereby improving the cooling efficiency of the first radiator for the battery and the cooling efficiency of the second radiator for the power distribution device.

[0046] In addition, it should be noted that on the basis of ensuring the numerical accuracy of the first flow value and the second flow value, the cooling liquid flow between the cold liquid distribution device and the first radiator is adjusted to the first flow value, and the cooling liquid flow between the cold liquid distribution device and the second radiator is adjusted to the second flow value, which prevents the vehicle battery from sticking or ablation with the relay under large current charging and discharging conditions, avoids safety failures of the vehicle, and further improves the safe driving of the vehicle.

[0047] The control method of the vehicle in the embodiment ensures the numerical accuracy of the first flow value and the second flow value, and further adjusts the cooling liquid flow between the cold liquid distribution device and the first radiator to the first flow value, and adjusts the cooling liquid flow between the cold liquid distribution device and the second radiator to the second flow value, thereby improving the cooling efficiency of the vehicle.

[0048] In some embodiments, the control method of the vehicle provided in the embodiment of the present application comprises determining a first flow value according to a first temperature, comprising: Step S201, determining a difference between the first temperature and the first threshold value to obtain a first difference value; Step S202, determining a temperature flow proportionality coefficient corresponding to the first radiator; Step S203, determining a product of the first difference value and the temperature flow proportionality coefficient to determine the first flow value.

[0049] In this embodiment, a difference between the first temperature and the first threshold value is determined to obtain a first difference value, wherein the first difference value is the difference between the first temperature and the first threshold value.

[0050] A temperature flow proportionality coefficient corresponding to the first radiator is determined, wherein the temperature flow proportionality coefficient represents a proportionality coefficient of the temperature of the first radiator and the flow.

[0051] Exemplarily, the temperature flow proportionality coefficient can represent an optimal proportion of the temperature of the first radiator and the internal cold liquid flow.

[0052] A product of the first difference value and the temperature flow proportionality coefficient is determined to determine the first flow value.

[0053] Exemplarily, historical temperature data and historical flow data of the first radiator are acquired, the historical temperature data and the historical flow data are preprocessed to obtain model training data, data model training processing is performed based on the model training data to establish a proportion confirmation model, and through the proportion confirmation model, the temperature-flow proportion coefficient corresponding to the first radiator can be determined.

[0054] Exemplarily, the first difference value is input into the proportion confirmation model to obtain the temperature-flow proportion coefficient output by the proportion confirmation model.

[0055] Exemplarily, the first flow value is determined through the first difference value and the temperature-flow proportion coefficient, so that the first flow value is ensured to be the optimal flow value of the first radiator, and the cooling efficiency of the first radiator on the battery is ensured.

[0056] In some embodiments, a control method of a vehicle is provided in the embodiments of the present application, and a second flow value is determined according to a second temperature, comprising: In step S301, a plurality of temperature intervals corresponding to a second radiator and a plurality of preset flow values are determined, and the plurality of temperature intervals and the plurality of preset flow values correspond to each other in one-to-one correspondence. In step S302, a temperature interval in which the second temperature is located is determined as a target temperature interval in the plurality of temperature intervals. In step S303, a preset flow value corresponding to the target temperature interval is determined as the second flow value in the plurality of preset flow values.

[0057] In this embodiment, a plurality of temperature intervals corresponding to the second radiator and a plurality of preset flow values are determined, and the plurality of temperature intervals and the plurality of preset flow values correspond to each other in one-to-one correspondence.

[0058] Exemplarily, the plurality of temperature intervals can be [115℃, 120℃], [120℃, 125℃], [125℃, 130℃], [130℃, 135℃], and [135℃, 140℃].

[0059] Exemplarily, the plurality of preset flow values can be 4cm / s, 6cm / s, 8cm / s, 10cm / s, and 12cm / s. 2 2 2 2 2

[0060] Exemplarily, [115℃, 120℃] corresponds to 4cm / s, [120℃, 125℃] corresponds to 6cm / s, [125℃, 130℃] corresponds to 8cm / s, [130℃, 135℃] corresponds to 10cm / s, and [135℃, 140℃] corresponds to 12cm / s. 2 2 2 2 ​​​​​​​​corresponds to, [135℃, 140℃] corresponds to 12cm 2 corresponds to.

[0061] The second temperature is compared with the plurality of temperature intervals respectively, and a temperature interval in which the second temperature is located is determined as a target temperature interval, wherein the target temperature interval is a temperature interval in which the second temperature is located in the plurality of temperature intervals.

[0062] Exemplarily, in a case where the second temperature is 118℃, it can be determined that the target temperature interval is [115℃, 120℃].

[0063] Exemplarily, in a case where the second temperature is 128℃, it can be determined that the target temperature interval is [125℃, 130℃].

[0064] Exemplarily, in a case where the second temperature is 138℃, it can be determined that the target temperature interval is [135℃, 140℃].

[0065] In the plurality of preset flow values, a preset flow value corresponding to the target temperature interval is determined as a second flow value.

[0066] Exemplarily, in a case where the target temperature interval is [115℃, 120℃], it can be determined that the second flow value is 4cm 2 / s.

[0067] Exemplarily, in a case where the target temperature interval is [125℃, 130℃], it can be determined that the second flow value is 8cm 2 / s.

[0068] Exemplarily, in a case where the target temperature interval is [135℃, 140℃], it can be determined that the second flow value is 12cm 2 / s.

[0069] In some embodiments, the embodiments of the present application provide a control method of a vehicle, in a case where the first temperature is greater than the first threshold value and the second temperature is greater than the second threshold value, the method further comprises: Step S401, obtaining a maximum flow value output by the cooling liquid distribution device; Step S402, in a case where the flow of the cooling liquid between the cooling liquid distribution device and the second radiator is adjusted to the maximum flow value, re-detecting the temperature of the power distribution device to obtain a third temperature; Step S403, in a case where the third temperature is less than the second threshold value, adjusting the flow of the cooling liquid between the cooling liquid distribution device and the first radiator to the maximum flow value.

[0070] In this embodiment, in the case that the first temperature is greater than the first threshold value and the second temperature is greater than the second threshold value, a maximum flow value output by the cold liquid distribution device is obtained, wherein the maximum flow value is a maximum flow value of the cold liquid that the cold liquid distribution device can output.

[0071] Exemplarily, the maximum flow value is a maximum flow value of the cold liquid distribution device when the cold liquid distribution device only transports the cold liquid to the second radiator.

[0072] In the case that the flow of the cooling liquid between the cold liquid distribution device and the second radiator is adjusted to the maximum flow value, the temperature of the power distribution device is re-detected to obtain a third temperature, wherein the third temperature is the temperature of the power distribution device.

[0073] In the case that the third temperature is less than the second threshold value, the flow of the cooling liquid between the cold liquid distribution device and the first radiator is adjusted to the maximum flow value.

[0074] Exemplarily, the priority of the power distribution device is higher than that of the battery, the flow of the cooling liquid between the cold liquid distribution device and the second radiator is adjusted to the maximum flow value first, the power distribution device can be cooled quickly, and after the cooling of the power distribution device is completed, the flow of the cooling liquid between the cold liquid distribution device and the first radiator is adjusted to the maximum flow value, and the battery can be cooled quickly.

[0075] In some embodiments, the embodiments of the present application provide a control method of a vehicle, after the flow of the cooling liquid between the cold liquid distribution device and the first radiator is adjusted to the first flow value, the method further comprises: Step S501, re-detecting the temperature of the battery to obtain a fourth temperature; Step S502, in the case that the third temperature is less than the first threshold value, closing the first valve to stop the cold liquid distribution device from transporting the cooling liquid to the first radiator.

[0076] In this embodiment, the vehicle further comprises a first valve, which is arranged between the cold liquid distribution device and the first radiator.

[0077] Exemplarily, the first valve can be an electromagnetic valve.

[0078] After the flow of the cooling liquid between the cold liquid distribution device and the first radiator is adjusted to the first flow value, the temperature of the battery is re-detected to obtain a fourth temperature, wherein the fourth temperature is the temperature of the battery.

[0079] In the case that the third temperature is less than the first threshold value, it is indicated that the cooling of the battery has been completed, the first valve is closed to stop the cold liquid distribution device from transporting the cooling liquid to the first radiator.

[0080] Exemplarily, the cooling liquid flow between the cooling liquid distribution device and the first radiator can be adjusted to the first flow value by modulating the opening of the first threshold.

[0081] In some embodiments, the control method of the vehicle provided in the embodiments of the present application further comprises: Step S601, re-detecting the temperature of the power distribution device to obtain a fifth temperature; Step S602, in the case that the fifth temperature is less than a second threshold, closing the second valve to stop the cooling liquid distribution device from transmitting cooling liquid to the second radiator.

[0082] In this embodiment, the vehicle further comprises a second valve, which is arranged between the cooling liquid distribution device and the second radiator.

[0083] Exemplarily, the second valve can be an electromagnetic valve.

[0084] After adjusting the cooling liquid flow between the cooling liquid distribution device and the second radiator to the second flow value, re-detecting the temperature of the power distribution device to obtain a fifth temperature, wherein the fifth temperature is the temperature of the power distribution device.

[0085] In the case that the fifth temperature is less than the second threshold, it indicates that the cooling of the power distribution device has been completed, and the second valve is closed to stop the cooling liquid distribution device from transmitting cooling liquid to the second radiator.

[0086] Exemplarily, the cooling liquid flow between the cooling liquid distribution device and the second radiator can be adjusted to the second flow value by modulating the opening of the second threshold.

[0087] In some embodiments, as Figure 2 shown, a control device 700 of a vehicle is provided, which comprises a processor 702 and a memory 704, and the memory 704 stores a computer program which, when executed by the processor 702, implements the steps of the control method of the vehicle in any of the above embodiments. Therefore, the control device 700 of the vehicle has all the beneficial effects of the control method of the vehicle in any of the above embodiments, which will not be repeated here.

[0088] In some embodiments, a readable storage medium is provided, which stores a program, and the program, when executed by a processor, implements the steps of the control method of the vehicle in any of the above embodiments, and thus has all the beneficial technical effects of the control method of the vehicle in any of the above embodiments.

[0089] In some embodiments, a vehicle is provided, which comprises: Batteries and power distribution devices, the power distribution devices being used to distribute the electrical energy from the batteries; The system comprises a first radiator, a second radiator, and a coolant distribution device. The first radiator is used to cool the battery, the second radiator is used to cool the power distribution device, and the coolant distribution device is used to adjust the flow rate of coolant in the first and second radiators. The vehicle control device in any of the above embodiments.

[0090] For example, such as Figure 3 As shown, the vehicle 800 includes a battery 801, a power distribution device 802, a first radiator 803, a second radiator 804, a thermal management system 805, a first valve 806, a second valve 807, a battery management system 808, and a power domain controller 809.

[0091] For example, the thermal management system may include a coolant distribution device. The thermal management system can control the flow rate of the power battery liquid cooling plate and the high-voltage distribution box liquid cooling plate in separate zones through flow control valve 1 and flow control valve 2.

[0092] For example, by quickly identifying the vehicle's operating status and promptly controlling the flow of the liquid cooling plate in different zones, the internal relays of the high-voltage power distribution device of the power battery can be cooled quickly in a timely manner, ensuring high-rate fast charging and high-current output conditions, and preventing the relays from sticking or burning under high-current charging and discharging conditions, thus preventing safety malfunctions during driving.

[0093] Cooling activation: When the highest temperature of the battery cell is ≥40℃ and the average temperature is ≥38℃, flow valve 2 is opened to cool the cell; when the highest temperature of the relay temperature sampling point (not marked in the diagram, but can be marked at high voltage bus 1) is ≥115℃, flow valve 1 is opened to cool the relay; when both the cell and relay temperatures reach the thermal management activation threshold, the relay is cooled first (overheating of the relay and burning of the contact points will affect the safety performance of the entire vehicle; overheating of the battery will limit the output power through the BMS, reduce the vehicle speed, and affect the driving experience).

[0094] Cooling off: When the highest temperature of the battery cell is ≤36℃ or the average temperature is ≤34℃, flow valve 2 is closed to stop cooling the battery cell; when the highest temperature of the relay temperature sampling point is ≤105℃, flow valve 1 is closed to stop cooling the relay.

[0095] In some embodiments of this application, a vehicle is provided, further comprising: Brazed components are used to connect the second radiator and the second heat sink.

[0096] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0097] Those skilled in the art will appreciate that embodiments of the present application can be readily used as a method, apparatus, or computer program product. Accordingly, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application can take the form of a computer program product on one or more computer readable storage media (including, but not limited to, disk memory, CD-ROMs, optical storage devices, etc.) embodying computer readable program code.

[0098] The present application is described in reference to the flowchart illustrations and / or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart illustrations and / or block diagrams. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams. Figure 1 means for performing each of the one or more functions specified in the flowchart illustrations and / or block diagrams.

[0099] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the flowchart illustrations and / or block diagrams. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams. Figure 1 means for performing each of the one or more functions specified in the flowchart illustrations and / or block diagrams.

[0100] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the flowchart illustrations and / or block diagrams. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams. Figure 1 means for performing each of the one or more functions specified in the flowchart illustrations and / or block diagrams.

[0101] The embodiments of the present application also provide a computer program product, which comprises computer software instructions, when the computer software instructions are run on a processing device, cause the processing device to execute the flow of the control method of the vehicle.

[0102] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that the computer can store or be integrated into a data storage device such as a server, data center, etc. containing one or more available media sets. The available media can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)), etc.

[0103] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0104] In several embodiments provided in the present application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the apparatus embodiments described above are only schematic. The division of the units is only a logical function division. In actual implementation, additional division can be made, for example, a plurality of units or components can be combined or integrated into another system, or some features can be omitted or not executed. In addition, the coupling or direct coupling or communication connection between the units or components shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0105] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or they can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

[0106] In addition, each of the function units in each of the embodiments of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software function unit.

[0107] When the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application, essentially or in other words, the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods of the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0108] The above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

[0109] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to the embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0110] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A control method of a vehicle, characterized by, The vehicle comprises a battery, a power distribution device, a first radiator for cooling the battery, a second radiator for cooling the power distribution device, and a coolant distribution device for adjusting the flow of coolant between the first radiator and the second radiator. The method comprises: During operation of the vehicle, a first temperature of the battery and a second temperature of the power distribution device are detected respectively; When the first temperature is greater than a first threshold value and the second temperature is greater than a second threshold value, a first flow value is determined according to the first temperature, and a second flow value is determined according to the second temperature; The flow of coolant between the coolant distribution device and the first radiator is adjusted to the first flow value; The flow of coolant between the coolant distribution device and the second radiator is adjusted to the second flow value.

2. The method of claim 1, wherein, The determination of the first flow value according to the first temperature comprises: A first difference value is determined between the first temperature and the first threshold value; A temperature-flow ratio coefficient corresponding to the first radiator is determined; The first difference value and the temperature-flow ratio coefficient are multiplied to determine the first flow value.

3. The method of claim 1, wherein, The determination of the second flow value according to the second temperature comprises: A plurality of temperature intervals and a plurality of preset flow values corresponding to the second radiator are determined, and the plurality of temperature intervals correspond to the plurality of preset flow values one by one; Among the plurality of temperature intervals, the temperature interval in which the second temperature is located is determined as a target temperature interval; Among the plurality of preset flow values, the preset flow value corresponding to the target temperature interval is determined as the second flow value.

4. The method of claim 1, wherein, When the first temperature is greater than a first threshold value and the second temperature is greater than a second threshold value, the method further comprises: A maximum flow value output by the coolant distribution device is obtained; When the flow of coolant between the coolant distribution device and the second radiator is adjusted to the maximum flow value, the temperature of the power distribution device is re-detected to obtain a third temperature; When the third temperature is less than the second threshold value, the flow of coolant between the coolant distribution device and the first radiator is adjusted to the maximum flow value.

5. The method according to any one of claims 1 to 4, characterized in that, The vehicle further comprises a first valve arranged between the coolant distribution device and the first radiator, and after the flow of coolant between the coolant distribution device and the first radiator is adjusted to the first flow value, the method further comprises: The temperature of the battery is re-detected to obtain a fourth temperature; When the fourth temperature is less than the first threshold value, the first valve is closed to stop the coolant distribution device from transmitting coolant to the first radiator.

6. The method according to any one of claims 1 to 4, characterized in that, The vehicle further comprises a second valve arranged between the coolant distribution device and the second radiator, and after the flow of coolant between the coolant distribution device and the second radiator is adjusted to the second flow value, the method further comprises: The temperature of the power distribution device is re-detected to obtain a fifth temperature; In a case where the fifth temperature is less than the second threshold value, the second valve is closed to stop the cold liquid distribution device from transmitting cooling liquid to the second radiator.

7. A control device of a vehicle characterized by comprising: Comprising: a processor; a memory, the memory storing a program or instructions, the processor implementing the steps of the control method of the vehicle according to any one of claims 1 to 6 when executing the program or instructions in the memory.

8. A readable storage medium, characterized by, a program or instructions stored on a readable storage medium, the program or instructions being executed by a processor to implement the steps of the control method of the vehicle according to any one of claims 1 to 6.

9. A vehicle characterized by comprising: Comprising: a battery and a power distribution device for distributing electric energy of the battery; a first radiator for cooling the battery, a second radiator for cooling the power distribution device, and a cold liquid distribution device for adjusting flow of cooling liquid in the first radiator and the second radiator; the control device of the vehicle according to claim 7.

10. The vehicle of claim 9, wherein, The vehicle further comprises: a brazing member for connecting the second radiator and the second radiator.

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