Thermal Management Coolant Exhaust Control Method, Device, Equipment and Storage Medium

Abstract

The present application discloses a method, device, equipment and storage medium for controlling the exhaust of a thermal management coolant, which relates to the technical field of vehicle exhaust control. The method of the present application includes: obtaining the state information of the vehicle, the battery temperature information, and the exhaust stage and flow opening relationship table; obtaining the coolant exhaust mode state according to the state information; and performing exhaust control according to the coolant exhaust mode state, the battery temperature information, and the exhaust stage and flow opening relationship. By intelligently adjusting the circulation combination and flow rate of the cooling water circuit according to different working conditions and cooling requirements, the present application realizes automatic exhaust and improves the cooling effect of the thermal management system.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle exhaust control, and particularly to a method, device, equipment and storage medium for controlling the exhaust of heat management coolant. Background Art

[0002] In new energy vehicles, especially new energy hybrid vehicles, the performance of the heat management system is crucial for ensuring the normal operation of the vehicle. These vehicles are usually equipped with a complex heat management system including engine, battery and electric drive cooling water circuits. The heat management system not only needs to effectively manage the temperatures of various components, but also needs to ensure that there is no air in the cooling water circuit to avoid affecting the cooling effect.

[0003] During vehicle manufacturing or maintenance, especially when the vehicle is first assembled or the electric drive battery system is replaced, the coolant in the cooling circuit needs to be refilled. Inevitably, air will be mixed into the cooling water circuit during this process. If these air are not removed in time, they will form bubbles in the pipeline, affecting the fluidity and heat exchange efficiency of the coolant, and may further lead to poor cooling effect of the battery, electric drive or engine. This will not only reduce the performance of the vehicle, but also may cause overheating problems, posing a threat to the safety and reliability of the vehicle. However, there is currently a lack of an effective control strategy in the market that can automatically and efficiently remove the air in the cooling circuit without increasing additional hardware costs. Existing heat management systems often rely on manual exhaust or circulating exhaust methods, which have problems of low efficiency and easy damage to system components.

[0004] Therefore, how to improve the cooling effect of the heat management system is an urgent problem to be solved at present. Summary of the Invention

[0005] The main purpose of the present application is to provide a method, device, equipment and storage medium for controlling the exhaust of heat management coolant, aiming to solve the technical problem of how to improve the cooling effect of the heat management system.

[0006] To achieve the above purpose, the present application proposes a method for controlling the exhaust of heat management coolant, the method includes:

[0007] Obtain the status information of the vehicle, the battery temperature information and the exhaust stage and flow opening relationship table;

[0008] Obtain the coolant exhaust mode status according to the status information;

[0009] Perform exhaust control according to the coolant exhaust mode status, the battery temperature information and the exhaust stage and flow opening relationship.

[0010] In one embodiment, the step of performing exhaust control according to the coolant exhaust mode state, the battery temperature information, and the relationship between the exhaust stage and the flow opening degree includes:

[0011] When the coolant exhaust mode state is the operating state, obtain the current exhaust time and the battery temperature and cooling time relationship table;

[0012] Obtain the cooling time according to the battery temperature information and the battery temperature and cooling time relationship table;

[0013] Cool the battery components according to the cooling time, and when the current exhaust time is greater than or equal to the cooling time, control the exhaust of the engine circuit according to the exhaust stage and flow opening degree relationship table.

[0014] In one embodiment, the step of obtaining the cooling time according to the battery temperature information and the battery temperature and cooling time relationship table includes:

[0015] Process the battery temperature information according to a preset strategy to obtain a target temperature;

[0016] Match the target temperature in the battery temperature and cooling time relationship table to obtain the cooling time.

[0017] In one embodiment, the step of controlling the exhaust of the engine circuit according to the exhaust stage and flow opening degree relationship table includes:

[0018] Obtain the current exhaust stage;

[0019] Obtain the water pump opening degree, the first valve opening degree, and the second valve opening degree according to the current exhaust stage and the exhaust stage and flow opening degree relationship table;

[0020] Control the exhaust of the engine circuit according to the water pump opening degree, the first valve opening degree, the second valve opening degree, and a preset exhaust time.

[0021] In one embodiment, after the step of obtaining the coolant exhaust mode state according to the status information, it further includes:

[0022] When the coolant exhaust mode state is the operating state, obtain the total exhaust duration;

[0023] When the total exhaust duration is less than the preset total exhaust duration, perform a fault detection on the exhaust components to obtain fault information;

[0024] Confirm the current fault level according to the fault information and perform fault control.

[0025] In one embodiment, the step of confirming the current fault level according to the fault information and performing fault control includes:

[0026] When the fault information is temperature fault information or pressure fault information, confirm that the current fault level is the preset fault level;

[0027] When the fault level is the preset fault level, switch the coolant exhaust mode status from the running state to the stopped state and upload the fault information.

[0028] In one embodiment, the step of obtaining the coolant exhaust mode status according to the status information includes:

[0029] Obtain the exhaust switch status, gear position, voltage, discharge status, and charging status according to the status information;

[0030] When the exhaust switch status is the on state, the gear position is the on gear position, the voltage is high voltage, the discharge status is in the non-discharged state, and the charging status is the non-charging state, confirm that the coolant exhaust mode status is the running state.

[0031] In addition, to achieve the above object, the present application also proposes a thermal management coolant exhaust control device, and the device includes:

[0032] An information acquisition module, configured to acquire the status information of the vehicle, the battery temperature information, and the exhaust stage and flow opening relationship table;

[0033] An exhaust activation module, configured to obtain the coolant exhaust mode status according to the status information;

[0034] An exhaust control module, configured to perform exhaust control according to the coolant exhaust mode status, the battery temperature information, and the exhaust stage and flow opening relationship.

[0035] In addition, to achieve the above object, the present application also proposes a thermal management coolant exhaust control device, and the device includes: a memory, a processor, and a computer program stored on the memory and executable on the processor, and the computer program is configured to implement the steps of the thermal management coolant exhaust control method as described above.

[0036] In addition, to achieve the above object, the present application also proposes a storage medium, and the storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium, and when the computer program is executed by a processor, the steps of the thermal management coolant exhaust control method as described above are implemented.

[0037] In addition, to achieve the above object, the present application also provides a computer program product, and the computer program product includes a computer program, and when the computer program is executed by a processor, the steps of the thermal management coolant exhaust control method as described above are implemented.

[0038] The present application provides a method for controlling the exhaust of a thermal management coolant. The method of the present application includes: obtaining the status information of the vehicle, the battery temperature information, and the exhaust stage and flow opening relationship table; obtaining the coolant exhaust mode status according to the status information; and performing exhaust control according to the coolant exhaust mode status, the battery temperature information, and the exhaust stage and flow opening relationship. In summary, the present application realizes automatic exhaust and improves the cooling effect of the thermal management system by intelligently adjusting the circulation combination and flow rate of the cooling water circuit according to different working conditions and cooling requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0041] Figure 1 It is a schematic flowchart provided for the first embodiment of the method for controlling the exhaust of the thermal management coolant of the present application;

[0042] Figure 2 It is a schematic flowchart provided for the second embodiment of the method for controlling the exhaust of the thermal management coolant of the present application;

[0043] Figure 3 It is a schematic diagram of the overall circuit for an embodiment of the method for controlling the exhaust of the thermal management coolant of the present application;

[0044] Figure 4 It is a schematic diagram of the module structure of the device for controlling the exhaust of the thermal management coolant in the embodiment of the present application;

[0045] Figure 5 It is a schematic diagram of the device structure of the hardware operating environment involved in the method for controlling the exhaust of the thermal management coolant in the embodiment of the present application.

[0046] The realization of the purpose, the functional characteristics, and the advantages of the present application will be further described in conjunction with the embodiments with reference to the drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0047] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0048] To better understand the technical solution of this application, the following will be described in detail in conjunction with the accompanying drawings of the specification and specific implementation manners.

[0049] The main solution of the embodiment of this application is: obtaining the status information of the vehicle, the battery temperature information, and the exhaust stage and flow opening relationship table; obtaining the coolant exhaust mode status according to the status information; and performing exhaust control according to the coolant exhaust mode status, the battery temperature information, and the exhaust stage and flow opening relationship.

[0050] In new energy vehicles, especially new energy hybrid models, the performance of the thermal management system is crucial for ensuring the normal operation of the vehicle. These models are usually equipped with a complex thermal management system including engine, battery, and electric drive cooling water circuits. The thermal management system not only needs to effectively manage the temperatures of various components, but also needs to ensure that there is no air in the cooling water circuit to avoid affecting the cooling effect.

[0051] During vehicle manufacturing or maintenance, especially when the vehicle is first assembled or the electric drive battery system is replaced, the coolant in the cooling circuit needs to be refilled. Inevitably, air will be mixed into the cooling water circuit during this process. If these air are not removed in time, they will form bubbles in the pipeline, affecting the fluidity and heat exchange efficiency of the coolant, and may further lead to poor cooling effect of the battery, electric drive or engine. This will not only reduce the performance of the vehicle, but also may cause overheating problems, posing a threat to the safety and reliability of the vehicle. However, there is currently a lack of an effective control strategy in the market that can automatically and efficiently remove the air in the cooling circuit without increasing additional hardware costs. Existing thermal management systems often rely on manual exhaust or circulating exhaust methods, which have problems of low efficiency and easy damage to system components. Therefore, how to improve the cooling effect of the thermal management system is an urgent problem to be solved currently.

[0052] This application realizes automatic exhaust and improves the cooling effect of the thermal management system by intelligently adjusting the flow combination and flow rate of the cooling water circuit according to different working conditions and cooling requirements.

[0053] It should be noted that the execution subject of this embodiment can be a thermal management coolant exhaust control system, or a computing service device with data processing, network communication, and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device that can implement the above thermal management coolant exhaust control function. This embodiment does not specifically limit this. The following takes the thermal management coolant exhaust control system as an example to illustrate this embodiment and the following embodiments.

[0054] Based on this, the embodiment of this application provides a thermal management coolant exhaust control method, referring to Figure 1 ,Figure 1 Schematic flowchart of the first embodiment of the exhaust control method for the thermal management coolant of this application.

[0055] In this embodiment, the exhaust control method for the thermal management coolant includes steps S10 to S30:

[0056] Step S10: Obtain the vehicle's status information, battery temperature information, and the exhaust stage and flow opening relationship table.

[0057] It should be noted that in this step, the system will obtain the vehicle's status information in real time through sensors, including but not limited to vehicle speed, engine speed, motor working status, etc., to comprehensively evaluate the current operating condition of the vehicle. At the same time, the system will also obtain the battery temperature information through the battery management module, accurate to the temperature of each battery or battery pack, to determine whether the battery requires additional cooling protection. In addition, an exhaust stage and flow opening relationship table is preset in the system, which details the opening requirements of each pump and valve in different exhaust stages to ensure the effective circulation of the coolant and the discharge of gas. For example, when the vehicle starts and is ready to enter the exhaust mode, the system will first obtain vehicle status information such as the current vehicle speed is 0 (indicating that the vehicle is stationary), the engine is not started (or in an idle state), the motor is in the off state, etc., and the battery temperature information that the average temperature of the battery pack is 30°C. Subsequently, the system prepares to enter the first stage of the exhaust mode according to the preset exhaust stage and flow opening relationship table.

[0058] In addition, it should be noted that the exhaust stage and flow opening relationship table is formulated according to the overall circuit schematic diagram of the exhaust control method for the thermal management coolant. This relationship table details the opening requirements of each pump (Pump_M1, Pump_M2, Pump_B, Pump_H, Pump_E) and three-way valve (3WV1, 3WV2) in each stage of exhaust to ensure that the coolant circulates and exhausts according to specific requirements.

[0059] Step S20: Obtain the coolant exhaust mode status according to the status information.

[0060] It should be noted that in this step, the system will, according to the obtained vehicle status information, combine the preset exhaust mode trigger conditions to determine whether it is currently suitable to enter the coolant exhaust mode. The trigger conditions include but are not limited to: the vehicle is in a stationary state or a low-speed driving state, the engine is not working or in a low-load state, the battery temperature is within the safe range and no overheating fault is reported, etc. If the trigger conditions are met, the system enters the coolant exhaust mode status; if not, the vehicle status is continuously monitored until the trigger conditions are met.

[0061] Additionally, it should be noted that the coolant exhaust mode status is a comprehensive evaluation result that takes into account various vehicle status information and the triggering conditions of the exhaust mode. Through comprehensive judgment, the system can ensure that the exhaust mode is activated at an appropriate time to avoid interfering with the normal operation of the vehicle.

[0062] In a feasible implementation manner, step S20 specifically includes:

[0063] Step S201: Obtain the exhaust switch status, gear position, voltage, discharge status, and charge status according to the status information.

[0064] It should be noted that in this step, the exhaust switch status refers to the switch status set by the driver through the control panel, which is used to indicate whether the coolant exhaust mode needs to be activated. The gear position refers to the current driving gear or start state of the vehicle, which determines the power output of the vehicle and the operating requirements of the cooling system. The voltage refers to the current voltage value of the battery to ensure that the battery has sufficient energy to support the operation of the cooling system. The discharge status and charge status respectively reflect the current discharge and charge conditions of the battery, which are used to determine whether the battery is in a safe state and whether it is necessary to enter the coolant exhaust mode.

[0065] Additionally, it should be noted that in this step, in order to confirm the status of the coolant exhaust mode, the system needs to obtain a series of key status information from the vehicle's control system. These status information include but are not limited to the status of the exhaust switch, the vehicle gear position (such as on gear, s gear, d gear, etc.), the battery voltage, the discharge status of the battery, and the charge status. Specifically, the system will read the status of the exhaust switch and the vehicle gear position information through the vehicle's bus system (such as CAN bus), and at the same time obtain the battery voltage information, the discharge status of the battery, and the charge status through the battery management module. It can be understood that the system can determine whether the vehicle meets the conditions for entering the coolant exhaust mode by comprehensively judging these status information.

[0066] Step S202: When the exhaust switch status is in the on state, the gear position is in the on gear position, the voltage is high voltage, the discharge status is in the non-discharge state, and the charge status is in the non-charge state, confirm that the coolant exhaust mode status is in the running state.

[0067] It should be noted that in this step, when the exhaust switch is in the open state and the vehicle gear is in the open gear (such as the on gear), the control system starts to prepare to enter the coolant exhaust mode. Then, the control system checks whether the voltage of the battery is in the high-voltage state and whether the battery is in the state of not being discharged and not being charged. If all conditions are met, the control system will officially enter the coolant exhaust mode. After entering the coolant exhaust mode, the system will gradually adjust parameters such as the rotation speed of the water pump and the opening degree of the three-way valve according to the preset working process (such as stage one to stage ten) to achieve the circulating exhaust of the coolant.

[0068] It can be understood that by comprehensively judging multiple state information, the system can ensure that the coolant exhaust mode starts at an appropriate time, thus avoiding potential safety hazards caused by cooling system problems during vehicle driving.

[0069] In a feasible implementation manner, after the step S20, the steps A10 to A30 are further included:

[0070] Step A10: When the coolant exhaust mode is in the running state, obtain the total exhaust duration.

[0071] It should be noted that in this step, when the coolant exhaust mode is activated and in the running state, the system will first start timing to obtain the total exhaust duration of the entire exhaust process. It can be understood that the function of this step is to monitor the duration of the exhaust mode and ensure that the exhaust process can proceed according to the preset time requirements, so as to effectively discharge the air in the cooling circuit.

[0072] In addition, it should be noted that the total exhaust duration is set according to the sum of the time required for each stage of the exhaust mode working process. These times are comprehensively determined according to factors such as the characteristics of the cooling circuit, the flow rate of the coolant, and the exhaust effect to ensure that the exhaust process can be carried out fully and effectively.

[0073] Step A20: When the total exhaust duration is less than the preset total exhaust duration, perform a fault detection on the exhaust components to obtain fault information.

[0074] It should be noted that in this step, when the total exhaust duration does not reach the preset total exhaust duration, the system will perform a fault detection on the components participating in the exhaust. It can be understood that the function of this step is to timely detect and handle possible faults to avoid poor exhaust effect or system damage caused by faults. For example, during the exhaust process, the system will periodically or real-time detect the working status of water pumps such as Pump_M1, Pump_M2, Pump_B, Pump_H, Pump_E, and three-way valves such as 3WV1 and 3WV2. If fault information such as idling, blocking, or overheating of a certain component is detected, the system will immediately record it and prepare for subsequent fault control processing. Additionally, it should be noted that the fault detection is achieved through monitoring devices such as sensors, which can real-time monitor the working status of components and feedback relevant information to the control system.

[0075] Step A30: Confirm the current fault level according to the fault information and perform fault control.

[0076] It should be noted that when the system obtains the fault information, it will confirm the current fault level according to the severity of the fault information and take corresponding fault control measures. It can be understood that the function of this step is to timely respond to the fault and take measures to prevent the fault from further deteriorating or affecting the normal operation of the system. For example, if the system detects that an exhaust component has an idling fault and the fault duration is short and the fault severity is low, the system will determine it as fault level 1. Since the presence of gas in the system can also cause components to report idling faults, the system will not take any action at this time and continue with the exhaust. If the fault duration is long or the fault severity is high, the system will determine it as a higher fault level and take corresponding control measures, such as stopping the exhaust work and sending an alarm signal.

[0077] Additionally, it should be noted that the fault level is divided according to the severity, duration, and impact on the system of the fault. The fault control measures are formulated according to the fault level to ensure that appropriate treatment measures can be taken for different types of faults. At the same time, the system will also continuously optimize the fault detection and control strategies according to the historical records and current status of the fault information to improve the stability and reliability of the system.

[0078] In a feasible implementation manner, the step A30 specifically includes:

[0079] Step A301: When the fault information is temperature fault information or pressure fault information, confirm that the current fault level is the preset fault level.

[0080] It should be noted that in this step, when the sensors in the thermal management system detect abnormal temperature (such as the temperature of the battery, electric drive, or engine cooling water circuit is too high, exceeding the preset safety threshold) or abnormal pressure (such as the system pressure is too high or too low, outside the normal operating range), the system will immediately identify these fault messages as temperature fault messages or pressure fault messages. Subsequently, according to the preset fault level classification criteria, these faults are classified into determined fault levels.

[0081] In addition, it should be noted that the preset fault levels are set in advance according to the actual situation and safety requirements of the thermal management system, and are used to guide the system to take corresponding control measures when a fault is detected. In this step, the preset fault levels include (levels 1 - 3), where fault level 1 refers to the idling fault of components; fault level 2 refers to the locked-rotor fault of components; fault level 3 refers to the over-temperature fault of components, over-temperature degradation fault, over-pressure fault, under-pressure fault, etc. It can be understood that the severity gradually increases from the lower fault level to the higher one.

[0082] Step A302: When the fault level is the preset fault level, switch the coolant exhaust mode state from the running state to the stopped state, and upload the fault information.

[0083] It should be noted that in this step, when the system confirms that the current fault level is the preset fault level (such as fault level 3), it will immediately trigger the fault control measures. One of the key measures is to switch the state of the coolant exhaust mode from the running state to the stopped state to cut off the circulation of the coolant in the cooling system and prevent the further spread and deterioration of the fault. It can be understood that the function of this step is to promptly stop the circulation of the coolant and avoid system damage or safety hazards that may be caused by continued operation in the fault state. At the same time, the system will also upload the detected fault information to the vehicle's control center or remote server so that technicians can promptly understand the fault situation and conduct subsequent diagnosis and repair.

[0084] Step S30: Perform exhaust control according to the coolant exhaust mode state, the battery temperature information, and the relationship between the exhaust stage and the flow opening.

[0085] It should be noted that in this step, once it is determined to enter the coolant exhaust mode, the system will gradually adjust the opening degrees of each water pump and three-way valve according to the preset exhaust stage and flow opening relationship table to achieve the circulation of the coolant and the discharge of gas. During the exhaust process, the system will continuously monitor the battery temperature information and vehicle status information, and dynamically adjust the exhaust strategy based on this information. For example, when initially entering the exhaust mode, the system will set a corresponding waiting time according to the battery temperature (such as waiting for 1 minute when the battery temperature ≤ 48°C) to ensure that the system is in a stable state before entering the exhaust mode. Subsequently, the system will control the flow rate of the water pump and the opening degree of the three-way valve in stages according to the exhaust stage and flow opening relationship to achieve the circulation of the coolant and the effective discharge of gas.

[0086] It can be understood that this step realizes the effective discharge of gas in the coolant and the optimized operation of the thermal management system by obtaining the vehicle status information and battery temperature information in real time and performing exhaust control according to the preset exhaust stage and flow opening relationship table. This method not only improves the cooling effect of the thermal management system but also enhances the stability and safety of the vehicle.

[0087] This embodiment provides a method for controlling the exhaust of thermal management coolant. The method of this embodiment includes: obtaining the status information of the vehicle, the battery temperature information, and the exhaust stage and flow opening relationship table; obtaining the coolant exhaust mode status according to the status information; and performing exhaust control according to the coolant exhaust mode status, the battery temperature information, and the exhaust stage and flow opening relationship. In summary, this embodiment realizes automatic exhaust by intelligently adjusting the circulation combination and flow rate of the cooling water circuit according to different working conditions and cooling requirements, improving the cooling effect of the thermal management system.

[0088] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar content as in the above-mentioned first embodiment can be referred to the above introduction and will not be repeated hereinafter. On this basis, please refer to Figure 2 , Figure 2 which is the flowchart provided for the second embodiment of the method for controlling the exhaust of thermal management coolant of the present application. The specific steps of step S30 include:

[0089] Step S301: When the coolant exhaust mode status is in the running state, obtain the current exhaust time and the battery temperature and cooling time relationship table.

[0090] It should be noted that in this step, when the vehicle-mounted cooling exhaust mode is activated and in the running state, the system will obtain the current exhaust time, that is, the time elapsed since the exhaust mode started running.

[0091] Table 1

[0092]

[0093] Meanwhile, the system reads the pre-stored relationship table between battery temperature and cooling time (as shown in Table 1). This relationship table is a preset lookup table used to determine the corresponding cooling time according to the battery temperature range. This relationship table is established based on historical experimental data to ensure sufficient cooling time at different battery temperatures to avoid adverse effects on battery performance due to temperature fluctuations during the exhaust process.

[0094] It can be understood that the relationship table between battery temperature and cooling time is a dynamically adjustable parameter table that can be adjusted and optimized according to different vehicle models, battery specifications, and actual usage conditions.

[0095] Step S302: Obtain the cooling time according to the battery temperature information and the relationship table between battery temperature and cooling time.

[0096] It should be noted that in this step, the system obtains the battery temperature information from the battery management module and determines the required cooling time according to the relationship table between battery temperature and cooling time. It can be understood that the purpose of this cooling time is to ensure that the battery is not damaged due to excessive temperature during the exhaust process. For example, when the vehicle starts and enters the coolant exhaust mode, the system detects that the exhaust mode status is the running state and immediately obtains the current exhaust time (such as 0 minutes). At the same time, the system accesses the relationship table between battery temperature and cooling time, and according to the current battery temperature information (for example, the battery temperature is 50°C), finds the corresponding cooling time (such as 2 minutes).

[0097] In a feasible implementation manner, step S302 specifically includes:

[0098] Step B10: Process the battery temperature information according to a preset strategy to obtain the target temperature.

[0099] It should be noted that the preset strategy comprehensively evaluates the temperature information of each component in the battery component to determine a target temperature that can represent the overall temperature condition of the battery system. The specific process is as follows: First, the system obtains the temperature information of each component in the battery component (including the battery pack, motor, inverter, cooler, DC-DC converter, and on-board charger). This information is collected in real time through the temperature sensors set for each of them. Then the system takes the temperature of the component with the highest temperature in the battery component as the target temperature. For example, the temperature of the battery pack is 65°C, the temperature of the motor is 52°C, the temperature of the inverter is 48°C, the temperature of the cooler is 42°C, the temperature of the DC-DC converter is 45°C, and the temperature of the on-board charger is 55°C. According to the strategy of taking the maximum value, the target temperature can be obtained as 65°C.

[0100] Step B20: Match according to the target temperature in the battery temperature and cooling time relationship table to obtain the cooling time.

[0101] It should be noted that in this step, the system will use the obtained target temperature as the input, search the battery temperature and cooling time relationship table, find the temperature range corresponding to the target temperature in the table, read the corresponding cooling time, and finally use the read cooling time as the execution time of the subsequent cooling and exhaust mode. Additionally, it should be noted that the accuracy and reliability of the battery temperature and cooling time relationship table have a direct impact on the execution effect of the cooling and exhaust mode. Therefore, various other factors will be considered when formulating this table, such as the materials, structures, heat dissipation performances of various battery components, as well as different temperature conditions and cooling requirements, etc.

[0102] Step S303: Cool the battery components according to the cooling time, and when the current exhaust time is greater than or equal to the cooling time, control the engine circuit exhaust according to the exhaust stage and flow opening relationship table.

[0103] It should be noted that in this step, once the cooling time is determined, the system will immediately start the cooling process of the battery components (including the battery pack, motor, inverter, cooler, DC-DC converter, and on-board charger) (i.e., by adjusting the working states of components such as pumps and valves in the cooling system to ensure that the coolant can flow through the battery components according to the predetermined flow rate and path, thereby taking away heat and reducing the battery temperature). During the cooling process, the system will continuously monitor the current exhaust time and compare it with the cooling time. When the exhaust time reaches or exceeds the cooling time, the system will determine that the battery-related components have been cooled and are ready to enter the exhaust stage of the coolant. At this time, the system will control the exhaust process of the vehicle circuit according to the pre-stored exhaust stage and flow opening relationship table. This relationship table (as shown in Table 2) details the flow opening settings of each pump (Pump_M1, Pump_M2, Pump_B, Pump_H, Pump_E) and three-way valve (3WV1, 3WV2) at different exhaust stages. By adjusting the working states of the pumps and valves according to the settings in the relationship table, the system can ensure that the coolant can flow through the engine circuit according to the predetermined path and flow rate, thereby effectively exhausting the air therein.

[0104] Additionally, it should be noted that the exhaust stage and flow opening relationship table is formulated based on the vehicle circuit and experimental data, aiming to exhaust the overall vehicle circuit at different exhaust stages to achieve the best exhaust effect. And this relationship table can also be adjusted and optimized according to the actual situation.

[0105] Table 2

[0106]

[0107] In a feasible implementation manner, the step of controlling the exhaust of the engine circuit according to the exhaust stage and flow opening relationship table specifically includes:

[0108] Step C10: Obtain the current exhaust stage.

[0109] It should be noted that the process of obtaining the current exhaust stage is monitored and judged in real time by the sensors or controllers of the system. Specifically, when the system needs to enter the exhaust mode, it will first receive a start signal, and then the system will determine the current exhaust stage through an internal timer according to the preset exhaust stage process. It can be understood that the function of this step is to ensure that the system can proceed orderly according to the established exhaust process, avoiding poor exhaust effects or system failures caused by incorrect stage judgment.

[0110] Step C20: Obtain the opening degrees of the water pump, the first valve, and the second valve according to the current exhaust stage and the exhaust stage and flow opening relationship table.

[0111] It should be noted that in this step, the system will obtain the opening degrees of the water pump, the first valve, and the second valve according to the current exhaust stage and the exhaust stage and flow opening relationship table. Specifically, the system will look up the corresponding opening degrees of the water pump (Pump_M1, Pump_M2, Pump_B, Pump_H, Pump_E), the first valve (3WV1), and the second valve (3WV2) in the exhaust stage and flow opening relationship table according to the number of the current exhaust stage (such as stage one, stage two, etc.). It can be understood that the function of this step is to ensure that the system can accurately adjust the opening degrees of the water pump and the valves according to different exhaust stages to achieve the best exhaust effect.

[0112] In addition, it should be noted that as Figure 3 shown, where the red is the warm air circuit, the green is the engine water circuit, the purple is the path when the engine water circuit and the warm air circuit are connected, and the blue is the path connecting the battery water circuit.

[0113] Step C30: Control the exhaust of the engine circuit according to the opening degrees of the water pump, the first valve, the second valve, and the preset exhaust time.

[0114] It should be noted that in this step, once the pump opening, the first valve opening, and the second valve opening are determined, the system will control the actions of the pump and the valves according to these parameters and the preset exhaust time (2 min), so as to control the flow rate and flow direction of the cooling water and achieve effective exhaust operation. The function of this step is to ensure that the system can accurately perform the exhaust operation according to the preset stages and time requirements, thereby exhausting the gases in different circuits and improving the exhaust effect of the coolant.

[0115] Specifically, as shown in Table 2, if the current exhaust stage is Stage 2, then the system will, according to the information in the table, set the pump openings of Pump_M1, Pump_M2, Pump_B, Pump_H, and Pump_E to 40% respectively, set the opening of 3WV1 to 0%, and set the opening of 3WV2 to 100%. Such settings can ensure that the cooling water circulates in the small engine water circulation loop, the heater circuit (fully passing through the battery), the motor water circuit, and the battery water circuit in a small flow rate (40%) manner, thereby exhausting some gases.

[0116] In this embodiment, by matching the cooling time corresponding to different temperatures, the exhaust effect of the thermal management system is improved, and the problem of poor cooling effect caused by the presence of air in the pipeline is avoided. At the same time, by flexibly controlling the openings of the pump and the valves in different stages, the flexibility and reliability of the exhaust control are enhanced.

[0117] This application also provides a thermal management coolant exhaust control device. Please refer to Figure 4 , and the thermal management coolant exhaust control device includes:

[0118] An information acquisition module 10, configured to acquire the status information of the vehicle, the battery temperature information, and the exhaust stage and flow opening relationship table;

[0119] An exhaust activation module 20, configured to obtain the coolant exhaust mode status according to the status information;

[0120] An exhaust control module 30, configured to perform exhaust control according to the coolant exhaust mode status, the battery temperature information, and the exhaust stage and flow opening relationship.

[0121] The thermal management coolant exhaust device provided by this application adopts the thermal management coolant exhaust method in the above embodiment, and can solve the technical problem of how to improve the cooling effect of the thermal management system. Compared with the prior art, the beneficial effects of the thermal management coolant exhaust device provided by this application are the same as those of the thermal management coolant exhaust method provided by the above embodiment, and other technical features in the thermal management coolant exhaust device are the same as those disclosed in the above embodiment method, and will not be elaborated here.

[0122] In one embodiment, the exhaust activation module 20 is further configured to obtain the exhaust switch state, start gear, voltage, discharge state, and charging state according to the status information; when the exhaust switch state is the on state, the start gear is the on gear, the voltage is high voltage, the discharge state is the non-discharged state, and the charging state is the non-charged state, confirm that the coolant exhaust mode state is the running state.

[0123] In one embodiment, the exhaust control module 30 is further configured to, when the coolant exhaust mode state is the running state, obtain the current exhaust time and the battery temperature and cooling time relationship table; obtain the cooling time according to the battery temperature information and the battery temperature and cooling time relationship table; cool the exhaust components according to the cooling time, and when the current exhaust time is greater than or equal to the cooling time, control the engine circuit exhaust according to the exhaust stage and flow opening relationship table.

[0124] In one embodiment, the exhaust control module 30 is further configured to process the battery temperature information according to a preset strategy to obtain a target temperature; match the target temperature in the battery temperature and cooling time relationship table to obtain the cooling time.

[0125] In one embodiment, the exhaust control module 30 is further configured to obtain the current exhaust stage; obtain the water pump opening, the first valve opening, and the second valve opening according to the current exhaust stage and the exhaust stage and flow opening relationship table; control the engine circuit exhaust according to the water pump opening, the first valve opening, the second valve opening, and a preset exhaust time.

[0126] In one embodiment, the thermal management coolant exhaust control device further includes a fault handling module 40, configured to obtain the total exhaust duration when the coolant exhaust mode state is the running state; perform a fault detection on the exhaust components to obtain fault information when the total exhaust duration is less than a preset total exhaust duration; confirm the current fault level according to the fault information and perform fault control.

[0127] In one embodiment, the fault handling module 40 is further configured to confirm that the current fault level is a preset fault level when the fault information is temperature fault information or pressure fault information; when the fault level is the preset fault level, switch the coolant exhaust mode state from the running state to the stop state and upload the fault information.

[0128] The present application provides a thermal management coolant exhaust control device. The thermal management coolant exhaust control device includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the thermal management coolant exhaust control method in Embodiment 1 above.

[0129] Reference is made below to Figure 5 , which shows a schematic structural diagram of a thermal management coolant exhaust control device suitable for implementing the embodiments of the present application. The thermal management coolant exhaust control device in the embodiments of the present application may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions: tablet computers), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 5 The thermal management coolant exhaust control device shown is merely an example and should not impose any limitation on the functions and scope of use of the embodiments of the present application.

[0130] As Figure 5As shown, the thermal management coolant exhaust control device may include a processing device 1001 (such as a central processing unit, a graphics processing unit, etc.), which may perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 into a random access memory (RAM: Random Access Memory) 1004. In the RAM 1004, various programs and data required for the operation of the thermal management coolant exhaust control device are also stored. The processing device 1001, the ROM 1002, and the RAM 1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems may be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 may allow the thermal management coolant exhaust control device to communicate with other devices wirelessly or wiredly to exchange data. Although the figure shows a thermal management coolant exhaust control device having various systems, it should be understood that it is not required to implement or have all the shown systems. More or fewer systems may be implemented or had alternatively.

[0131] In particular, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes program codes for performing the methods shown in the flowcharts. In such an embodiment, the computer program may be downloaded and installed from a network through the communication device, or installed from the storage device 1003, or installed from the ROM 1002. When the computer program is executed by the processing device 1001, the above functions defined in the methods of the embodiments disclosed in the present application are executed.

[0132] The thermal management coolant exhaust control device provided by the present application adopts the thermal management coolant exhaust control method in the above embodiments, and can solve the technical problem of how to improve the cooling effect of the thermal management system. Compared with the prior art, the beneficial effects of the thermal management coolant exhaust control device provided by the present application are the same as those of the thermal management coolant exhaust control method provided by the above embodiments, and other technical features in the thermal management coolant exhaust control device are the same as the features disclosed in the method of the previous embodiment, and will not be elaborated here.

[0133] It should be understood that each part disclosed in this application can be implemented by hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0134] As described above, the above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed in this application can easily think of changes or substitutions, which should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

[0135] This application provides a computer-readable storage medium having computer-readable program instructions (i.e., computer programs) stored thereon, and the computer-readable program instructions are used to execute the thermal management coolant exhaust control method in the above embodiments.

[0136] The computer-readable storage medium provided by this application can be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination of the above. More specific examples of the computer-readable storage medium can include, but are not limited to: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM: Random Access Memory), read-only memory (ROM: Read Only Memory), erasable programmable read-only memory (EPROM: Erasable Programmable Read Only Memory or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM: CD-Read Only Memory), optical storage devices, magnetic storage devices, or any suitable combination of the above. In this embodiment, the computer-readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or combined with an instruction execution system, device, or device. The program code contained on the computer-readable storage medium can be transmitted by any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0137] The above computer-readable storage medium can be included in the thermal management coolant exhaust control device; or it can exist separately and not be assembled into the thermal management coolant exhaust control device.

[0138] The above computer-readable storage medium stores one or more programs which, when executed by the thermal management coolant exhaust control device, cause the thermal management coolant exhaust control device to: obtain the status information of the vehicle, the battery temperature information, and the exhaust stage and flow opening relationship table; obtain the coolant exhaust mode status according to the status information; and perform exhaust control according to the coolant exhaust mode status, the battery temperature information, and the exhaust stage and flow opening relationship.

[0139] Computer program code for performing the operations of this application can be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, executed as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (for example, by using an Internet service provider to connect through the Internet).

[0140] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code that contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0141] The modules described in the embodiments of this application can be implemented in software or in hardware. In some cases, the name of the module does not constitute a limitation on the unit itself.

[0142] The readable storage medium provided by this application is a computer-readable storage medium. The computer-readable storage medium stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned thermal management coolant exhaust control method, and can solve the technical problem of how to improve the cooling effect of the thermal management system. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by this application are the same as those of the thermal management coolant exhaust control method provided by the above embodiments, and will not be elaborated here.

[0143] This application also provides a computer program product, including a computer program, and the steps of the above-mentioned thermal management coolant exhaust control method are realized when the computer program is executed by a processor.

[0144] The computer program product provided by this application can solve the technical problem of how to improve the cooling effect of the thermal management system. Compared with the prior art, the beneficial effects of the computer program product provided by this application are the same as those of the thermal management coolant exhaust control method provided by the above embodiments, and will not be elaborated here.

[0145] The above are only some embodiments of this application, and do not limit the patent scope of this application. Any equivalent structural transformation made by using the content of the specification and drawings of this application under the technical concept of this application, or any direct / indirect application in other related technical fields, is included in the patent protection scope of this application.

Claims

1. A thermal management coolant exhaust control method, characterized in that: The method comprises: Acquire vehicle status information, battery temperature information, and a relationship table between exhaust stage and flow opening, wherein the exhaust stage is a plurality of predetermined stages, each stage corresponds to a combination of water pump opening, first valve opening, and second valve opening, and the flow opening is the percentage of opening of the water pump, the first valve, and the second valve; Obtaining a coolant exhaust mode state according to the state information; Exhaust control is performed according to the coolant exhaust mode state, the battery temperature information, and the relationship between the exhaust stage and the flow opening.

2. The method according to claim 1, characterized in that The step of performing exhaust control according to the coolant exhaust mode state, the battery temperature information, and the relationship between the exhaust stage and the flow opening includes: When the coolant exhaust mode state is in the running state, obtaining a relationship table between current exhaust time and battery temperature and cooling time; Obtaining the cooling time according to the battery temperature information and the battery temperature and cooling time relationship table; The battery component is cooled according to the cooling time, and when the current exhaust time is greater than or equal to the cooling time, the engine circuit exhaust is controlled according to the exhaust stage and flow opening relationship table.

3. The method according to claim 2, characterized in that The step of obtaining the cooling time according to the battery temperature information and the battery temperature and cooling time relationship table comprises: Processing the battery temperature information according to a preset strategy to obtain a target temperature; The target temperature is matched in the battery temperature and cooling time relationship table to obtain the cooling time.

4. The method according to claim 2, characterized in that The step of controlling the exhaust of the engine circuit according to the exhaust stage and flow opening relationship table comprises: Get the current exhaust stage; According to the current exhaust stage and the exhaust stage and flow opening relationship table, the water pump opening, the first valve opening, and the second valve opening are obtained; The exhaust of the engine circuit is controlled according to the water pump opening, the first valve opening, the second valve opening and the preset exhaust time.

5. The method according to claim 1, characterized in that After the step of obtaining the coolant exhaust mode state according to the state information, the method further includes: When the coolant exhaust mode is in the running state, obtaining the total exhaust time; When the total exhaust time is less than a preset total exhaust time, performing fault detection on exhaust components to obtain fault information; The current fault level is confirmed according to the fault information and fault control is performed.

6. The method according to claim 5, characterized in that The step of confirming the current fault level according to the fault information and performing fault control comprises: When the fault information is temperature fault information or pressure fault information, confirming that the current fault level is a preset fault level; When the fault level is a preset fault level, the coolant exhaust mode state is switched from a running state to a stopped state, and the fault information is uploaded.

7. The method according to claim 1, characterized in that The step of obtaining the coolant exhaust mode state according to the state information comprises: Obtaining exhaust switch status, gear position, voltage, discharge status, and charge status according to the status information; When the exhaust switch state is in the on state, the gear position is in the on gear position, the voltage is high voltage, the discharge state is in the non-discharge state, and the charge state is in the non-charge state, it is confirmed that the coolant exhaust mode state is in the running state.

8. A thermal management coolant exhaust control device, characterized in that: The device comprises: An information acquisition module, used to acquire vehicle status information, battery temperature information, and a relationship table between exhaust stage and flow opening, wherein the exhaust stage is a plurality of predetermined stages, each stage corresponds to a combination of water pump opening, first valve opening, and second valve opening, and the flow opening is a percentage of the opening of the water pump, the first valve, and the second valve; an exhaust activation module, used for obtaining a coolant exhaust mode state according to the state information; The exhaust control module is used to perform exhaust control according to the coolant exhaust mode state, the battery temperature information and the relationship between the exhaust stage and the flow opening.

9. A thermal management coolant exhaust control device, characterized in that: The device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the thermal management coolant exhaust control method according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the thermal management coolant exhaust control method according to any one of claims 1 to 7 are implemented.

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