Thermal management cooling liquid exhaust control method, device and equipment and storage medium

Abstract

The invention discloses a thermal management cooling liquid exhaust control method, device and equipment and a storage medium, and relates to the technical field of vehicle exhaust control. The method comprises the steps that state information of a vehicle, battery temperature information and an exhaust stage and flow opening degree relation table are obtained; obtaining a cooling liquid exhaust mode state according to the state information; and exhaust control is conducted according to the cooling liquid exhaust mode state, the battery temperature information and the relation between the exhaust stage and the flow opening degree. According to different working conditions and cooling requirements, the circulation combination and the flow of the cooling water loop are intelligently adjusted, automatic exhaust is achieved, and the cooling effect of the thermal management system is improved.

Description

Technical Field

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

[0002] In new energy vehicles, especially new energy hybrid models, the performance of the thermal management system is crucial to ensure the normal operation of the vehicle. These models are usually equipped with a complex thermal management system that includes the engine, battery, and electric drive cooling water circuit. The thermal management system not only needs to effectively manage the temperature of each component, 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 installed or the electric drive battery system is replaced, the coolant in the cooling circuit needs to be refilled. In this process, air will inevitably mix into the cooling water circuit. If the air is not removed in time, it will form bubbles in the pipes, affecting the fluidity and heat exchange efficiency of the coolant, which may lead to poor cooling of the battery, electric drive or engine. This will not only reduce the performance of the vehicle, but may also 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 on the market that can automatically and efficiently remove air from the cooling circuit without adding additional hardware costs. Existing thermal management systems often rely on manual exhaust or circulating exhaust, which are inefficient and easy to damage system components.

[0004] Therefore, how to improve the cooling effect of the thermal management system is a problem that needs to be solved urgently. Summary of the invention

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

[0006] To achieve the above objectives, the present application proposes a thermal management coolant exhaust control method, the method comprising: Obtain vehicle status information, battery temperature information, and exhaust stage and flow opening relationship table; 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.

[0007] 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 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.

[0008] 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: 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.

[0009] In one embodiment, the step of controlling the exhaust of the engine circuit according to the exhaust stage and flow opening relationship table includes: 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.

[0010] In one embodiment, 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.

[0011] In one embodiment, the step of confirming the current fault level according to the fault information and performing fault control includes: 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.

[0012] In one embodiment, 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.

[0013] In addition, to achieve the above-mentioned purpose, the present application also proposes a thermal management coolant exhaust control device, the device comprising: An information acquisition module is used to obtain vehicle status information, battery temperature information, and a relationship table between exhaust stage and flow opening; 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.

[0014] In addition, to achieve the above-mentioned objectives, the present application also proposes a thermal management coolant exhaust control device, which includes: a memory, a processor, and a computer program stored in 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.

[0015] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by the processor, the steps of the thermal management coolant exhaust control method as described above are implemented.

[0016] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which 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.

[0017] The present application provides a thermal management coolant exhaust control method, the method of the present application includes: obtaining vehicle status information, battery temperature information, and a table of exhaust stage and flow opening relationship; obtaining the coolant exhaust mode state according to the status information; and performing exhaust control according to the coolant exhaust mode state, 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 size of the cooling water circuit according to different working conditions and cooling requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 A schematic flow chart of the first embodiment of the thermal management coolant exhaust control method of the present application; Figure 2 A schematic flow chart of a second embodiment of the thermal management coolant exhaust control method of the present application; Figure 3 This is a schematic diagram of an overall circuit of an embodiment of a thermal management coolant exhaust control method of the present application; Figure 4 This is a schematic diagram of the module structure of the thermal management coolant exhaust control device according to an embodiment of the present application; Figure 5 Schematic diagram of the equipment structure of the hardware operating environment involved in the thermal management coolant exhaust control method in the embodiment of the present application.

[0021] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] 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.

[0023] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0024] The main solution of the embodiment of the present application is: obtaining the vehicle's status information, battery temperature information, and a table of the relationship between the exhaust stage and the flow opening; 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 relationship between the exhaust stage and the flow opening.

[0025] In new energy vehicles, especially new energy hybrid models, the performance of the thermal management system is crucial to ensure the normal operation of the vehicle. These models are usually equipped with a complex thermal management system that includes the engine, battery, and electric drive cooling water circuit. The thermal management system not only needs to effectively manage the temperature of each component, but also needs to ensure that there is no air in the cooling water circuit to avoid affecting the cooling effect.

[0026] During vehicle manufacturing or maintenance, especially when the vehicle is first installed or the electric drive battery system is replaced, the coolant in the cooling circuit needs to be refilled. In this process, air will inevitably mix into the cooling water circuit. If the air is not removed in time, it will form bubbles in the pipeline, affecting the fluidity and heat exchange efficiency of the coolant, which may lead to poor cooling of the battery, electric drive or engine. This will not only reduce the performance of the vehicle, but may also 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 on the market that can automatically and efficiently remove air from the cooling circuit without adding additional hardware costs. Existing thermal management systems often rely on manual exhaust or circulating exhaust, which is inefficient and easy to damage system components. Therefore, how to improve the cooling effect of the thermal management system is a problem that needs to be solved urgently.

[0027] The present application realizes automatic exhaust and improves the cooling effect of the thermal management system by intelligently adjusting the circulation combination and flow size of the cooling water circuit according to different working conditions and cooling requirements.

[0028] 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 realize the above-mentioned thermal management coolant exhaust control function, etc., and 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.

[0029] Based on this, the embodiment of the present application provides a thermal management coolant exhaust control method, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the thermal management coolant exhaust control method of the present application.

[0030] In this embodiment, the thermal management coolant exhaust control method includes steps S10 to S30: Step S10: Obtain vehicle status information, battery temperature information, and a table showing the relationship between exhaust phase and flow opening.

[0031] It should be noted that in this step, the system will obtain the vehicle 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 status of the vehicle. At the same time, the system will also obtain the temperature information of the battery through the battery management module, accurate to the temperature of each battery or battery pack, to determine whether the battery needs additional cooling protection. In addition, the system has a pre-set exhaust stage and flow opening relationship table, which records in detail the opening requirements of each pump and valve in different exhaust stages to ensure the effective circulation of the coolant and gas discharge. For example, when the vehicle is started and ready to enter the exhaust mode, the system will first obtain vehicle status information such as the current speed is 0 (indicating that the vehicle is stationary), the engine is not started (or in idle state), the motor is in the off state, and the average temperature of the battery pack is 30°C. Battery temperature information. Subsequently, the system prepares to enter the first stage of the exhaust mode according to the preset exhaust stage and flow opening relationship table.

[0032] In addition, it should be noted that the relationship table between the exhaust stage and the flow opening is formulated based on the overall loop schematic diagram of the thermal management coolant exhaust control method. The relationship table records in detail the opening requirements of each pump (Pump_M1, Pump_M2, Pump_B, Pump_H, Pump_E) and three-way valve (3WV1, 3WV2) from each stage of exhaust to ensure that the coolant is circulated and exhausted according to specific requirements.

[0033] Step S20: obtaining the coolant exhaust mode state according to the state information.

[0034] It should be noted that in this step, the system will determine whether it is currently suitable to enter the coolant exhaust mode based on the acquired vehicle status information and the preset exhaust mode trigger conditions. Trigger conditions include but are not limited to: the vehicle is stationary or driving at a low speed, the engine is not working or is in a low load state, the battery temperature is within a safe range and no overheating fault is reported, etc. If the trigger conditions are met, the system enters the coolant exhaust mode state; if not, the vehicle status will continue to be monitored until the trigger conditions are met.

[0035] In addition, it should be noted that the coolant exhaust mode status is a comprehensive evaluation result, which takes into account a variety of vehicle status information and exhaust mode triggering conditions. Through comprehensive judgment, the system can ensure that the exhaust mode is activated at the appropriate time to avoid interference with the normal operation of the vehicle.

[0036] In a feasible implementation manner, the step S20 specifically includes: Step S201: obtaining the exhaust switch state, gear position, voltage, discharge state and charge state according to the state information.

[0037] It should be noted that in this step, the exhaust switch state refers to the switch state set by the driver through the control panel, which is used to indicate whether the coolant exhaust mode needs to be started. The gear position refers to the current driving gear or starting 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 enough energy to support the operation of the cooling system. The discharge state and charge state reflect the current discharge and charge conditions of the battery respectively, which are used to determine whether the battery is in a safe state and whether it is necessary to enter the coolant exhaust mode.

[0038] In addition, 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. This status information includes but is not limited to the status of the exhaust switch, the vehicle gear (such as on gear, s gear, d gear, etc.), the battery voltage, the battery discharge status and the charging status. Specifically, the system will read the exhaust switch status and vehicle gear information through the vehicle's bus system (such as CAN bus), and obtain the battery voltage information, battery discharge status and charging 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.

[0039] Step S202: 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, confirm that the coolant exhaust mode state is in the running state.

[0040] It should be noted that in this step, when the exhaust switch is in the on state and the vehicle gear is in the on gear (such as the on gear), the control system begins to prepare to enter the coolant exhaust mode. Next, the control system checks whether the battery voltage is in a high voltage state and whether the battery is in an undischarged and uncharged state. 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 the speed of the water pump and the opening of the three-way valve and other parameters according to the preset workflow (such as stage one to stage ten) to achieve circulating exhaust of the coolant.

[0041] It can be understood that by comprehensively judging multiple status information, the system can ensure that the coolant exhaust mode is started at the appropriate time, thereby avoiding safety hazards caused by cooling system problems during vehicle driving.

[0042] In a feasible implementation manner, after step S20, steps A10 to A30 are further included: Step A10: When the coolant exhaust mode is in the running state, the total exhaust time is obtained.

[0043] It should be noted that in this step, when the coolant exhaust mode is activated and in operation, the system will first start timing to obtain the total exhaust time of the entire exhaust process. It can be understood that the purpose of this step is to monitor the duration of the exhaust mode and ensure that the exhaust process can be carried out according to the preset time requirements, so as to effectively exhaust the air in the cooling circuit.

[0044] In addition, it should be noted that the total exhaust time is set according to the sum of the time required for each stage of the exhaust mode workflow. These times are determined based on 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.

[0045] Step A20: When the total exhaust time is less than the preset total exhaust time, fault detection is performed on exhaust components to obtain fault information.

[0046] It should be noted that in this step, when the total exhaust time does not reach the preset total exhaust time, the system will perform fault detection on the components involved in the exhaust. It is understandable that the role of this step is to promptly discover and deal with possible faults to avoid poor exhaust effects or system damage caused by faults. For example, during the exhaust process, the system will regularly or in 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 a component is detected to have idling, stalling, overheating and other fault information, the system will immediately record it and prepare for subsequent fault control processing. In addition, it should be noted that fault detection is achieved through monitoring equipment such as sensors, which can monitor the working status of components in real time and feedback relevant information to the control system.

[0047] Step A30: confirm the current fault level according to the fault information and perform fault control.

[0048] 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 purpose of this step is to respond to the fault in a timely manner 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 the exhaust parts have an idling fault, and the fault duration is short and the fault degree is light, the system will judge it as a fault level 1. Since the presence of gas in the system will also cause the parts to report an idling fault, the system will not process it at this time and continue to exhaust. If the fault duration is long or the fault degree is severe, the system will judge it as a higher fault level and take corresponding control measures, such as stopping the exhaust work and sending an alarm signal.

[0049] In addition, it should be noted that the fault level is divided according to the severity of the fault, the duration and the impact on the system. 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 continuously optimize the fault detection and control strategy based on the historical records and current status of the fault information to improve the stability and reliability of the system.

[0050] In a feasible implementation manner, the step A30 specifically includes: Step A301: When the fault information is temperature fault information or pressure fault information, confirm that the current fault level is a preset fault level.

[0051] It should be noted that in this step, when the sensors in the thermal management system detect temperature anomalies (such as the temperature of the battery, electric drive or engine cooling water circuit is too high and exceeds the preset safety threshold) or pressure anomalies (such as the system pressure is too high or too low and exceeds the normal working range), the system will immediately identify these fault information as temperature fault information or pressure fault information. Subsequently, these faults are classified into certain fault levels according to the preset fault level classification standards.

[0052] In addition, it should be noted that the preset fault level is set in advance according to the actual situation and safety requirements of the thermal management system, and is 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 component idling fault; fault level 2 refers to component stall fault; fault level 3 refers to component overtemperature fault, overtemperature degradation fault, overvoltage fault and undervoltage fault, etc. It can be understood that the fault level from low to high represents a gradual increase in severity.

[0053] Step A302: 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.

[0054] 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), the fault control measures will be triggered immediately. 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 to prevent the fault from further spreading and worsening. It can be understood that the purpose of this step is to stop the circulation of the coolant in time to avoid system damage or safety hazards that may be caused by continued operation in a faulty 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 understand the fault situation in time and conduct subsequent diagnosis and repairs.

[0055] Step S30: 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.

[0056] 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 of each water pump and the 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 the gas. During the exhaust process, the system will monitor the battery temperature information and vehicle status information in real time, and dynamically adjust the exhaust strategy based on this information. For example, when the exhaust mode is first entered, the system will set the corresponding waiting time according to the battery temperature (such as waiting for 1 minute when the battery temperature is ≤48°C) to ensure that the system is in a stable state before entering the exhaust mode. Subsequently, the system will control the flow of the water pump and the opening of the three-way valve in stages according to the relationship between the exhaust stage and the flow opening to achieve the circulation of the coolant and the effective discharge of the gas.

[0057] It can be understood that this step achieves effective exhaust of gas in the coolant and optimized operation of the thermal management system by acquiring vehicle status information and battery temperature information in real time and performing exhaust control according to a 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.

[0058] This embodiment provides a thermal management coolant exhaust control method, and the method of this embodiment includes: obtaining vehicle status information, battery temperature information, and an exhaust stage and flow opening relationship table; obtaining the coolant exhaust mode state according to the status information; and performing exhaust control according to the coolant exhaust mode state, the battery temperature information, and the exhaust stage and flow opening relationship. In summary, this embodiment realizes automatic exhaust and improves the cooling effect of the thermal management system by intelligently adjusting the circulation combination and flow size of the cooling water circuit according to different working conditions and cooling requirements.

[0059] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can refer to the above introduction, and will not be repeated later. Figure 2 , Figure 2 This is a flow chart of the second embodiment of the thermal management coolant exhaust control method of the present application, wherein step S30 specifically includes: Step S301: when the coolant exhaust mode is in the running state, obtaining a current exhaust time and a table of relationships between battery temperature and cooling time.

[0060] It should be noted that in this step, when the vehicle cooling exhaust mode is activated and in operation, the system will obtain the current scheduling time, that is, the time that has passed since the exhaust mode started to run.

[0061] Table 1

[0062] At the same time, the system will read the pre-stored table of battery temperature and cooling time (as shown in Table 1). This table is a preset lookup table used to determine the corresponding cooling time according to the battery temperature range. This table is based on historical experimental data to ensure that sufficient cooling time can be provided at different battery temperatures to avoid adverse effects on battery performance due to temperature fluctuations during exhaust.

[0063] It is understandable that the battery temperature and cooling time relationship table is a dynamically adjusted parameter table, which can be adjusted and optimized according to different vehicle models, battery specifications and actual usage.

[0064] Step S302: obtaining the cooling time according to the battery temperature information and the battery temperature and cooling time relationship table.

[0065] It should be noted that in this step, the system will obtain the battery temperature information from the battery management module, and determine the required cooling time based on the battery temperature and cooling time relationship table. It is understandable that the purpose of this cooling time is to ensure that the battery will not be damaged due to excessive temperature during the exhaust process. For example, when the vehicle starts and enters the coolant exhaust mode, the system will detect that the exhaust mode state is running and immediately obtain the current exhaust time (such as 0 minutes). At the same time, the system will access the battery temperature and cooling time relationship table, and find the corresponding cooling time (such as 2 minutes) based on the current battery temperature information (for example, the battery temperature is 50°C).

[0066] In a feasible implementation manner, the step S302 specifically includes: Step B10: Process the battery temperature information according to a preset strategy to obtain a target temperature.

[0067] It should be noted that the preset strategy is to comprehensively evaluate the temperature information of each component in the battery unit to determine a target temperature that can represent the temperature condition of the overall battery system. The specific process is as follows: First, the system will obtain the temperature information of each component in the battery unit (including battery pack, motor, inverter, cooler, DC voltage converter and on-board charger). This information is collected in real time through the temperature sensors set by each. Then the system will use the temperature of the component with the highest temperature in the battery unit 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 voltage 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.

[0068] Step B20: Match the target temperature in the battery temperature and cooling time relationship table to obtain the cooling time.

[0069] It should be noted that in this step, the system will use the target temperature as input, look up 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 exhaust mode. In addition, 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 exhaust mode. Therefore, various other factors will be considered when formulating this table, such as the material, structure, heat dissipation performance of the various components of the battery, as well as different temperature conditions and cooling requirements.

[0070] Step S303: Cooling the battery component according to the cooling time, and when the current exhaust time is greater than or equal to the cooling time, controlling the exhaust of the engine circuit according to the exhaust stage and flow opening relationship table.

[0071] 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 battery packs, motors, inverters, coolers, DC voltage converters and on-board chargers) (i.e., by adjusting the working status of the pumps, valves and other components 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) lists in detail the flow opening settings of each pump (Pump_M1, Pump_M2, Pump_B, Pump_H, Pump_E) and three-way valve (3WV1, 3WV2) in different exhaust stages. By adjusting the working status of the pump and valve 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 expelling the air therein.

[0072] In addition, 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 vehicle's entire circuit through different exhaust stages to achieve the best exhaust effect. And this relationship table can also be adjusted and optimized according to actual conditions.

[0073] Table 2

[0074] 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: Step C10: Obtain the current exhaust stage.

[0075] It should be noted that the process of obtaining the current exhaust stage is monitored and judged in real time by the system's sensor or controller. 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 the internal timer according to the preset exhaust stage process. It can be understood that the purpose of this step is to ensure that the system can proceed in an orderly manner according to the established exhaust process, avoiding poor exhaust effect or system failure due to incorrect stage judgment.

[0076] Step C20: obtaining 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.

[0077] It should be noted that in this step, the system will 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. Specifically, the system will find the corresponding water pump opening (Pump_M1, Pump_M2, Pump_B, Pump_H, Pump_E), the first valve opening (3WV1) and the second valve opening (3WV2) values ​​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 purpose of this step is to ensure that the system can accurately adjust the water pump and valve opening according to different exhaust stages to achieve the best exhaust effect.

[0078] In addition, it should be noted that if Figure 3 As shown, red is the heater circuit, green is the engine water circuit, purple is the path when the engine water circuit is connected to the heater circuit, and blue is the path connected to the battery water circuit.

[0079] Step C30: Controlling the exhaust of the engine circuit according to the water pump opening, the first valve opening, the second valve opening and the preset exhaust time.

[0080] It should be noted that in this step, once the water pump opening, the first valve opening and the second valve opening are determined, the system will control the action of the water pump and valve according to these parameters and the preset exhaust time (2 minutes), thereby controlling the flow and direction of the cooling water and achieving effective exhaust operation. The purpose of this step is to ensure that the system can accurately perform the exhaust operation according to the preset stage and time requirements, thereby exhausting the gas in different circuits and improving the effect of coolant exhaust.

[0081] Specifically, as shown in Table 2, if the current exhaust stage is stage 2, the system will set the water pump openings of Pump_M1, Pump_M2, Pump_B, Pump_H, and Pump_E to 40%, the opening of 3WV1 to 0%, and the opening of 3WV2 to 100% according to the information in the table. This setting ensures that the cooling water circulates in the engine water circulation small loop, the heater loop (all-through battery), the motor water loop, and the battery water loop at a small flow rate (40%), thereby exhausting part of the gas.

[0082] 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 opening of the water pump and valve in different stages, the flexibility and reliability of the exhaust control are enhanced.

[0083] This application also provides a thermal management coolant exhaust control device, please refer to Figure 4 , the thermal management coolant exhaust control device comprises: The information acquisition module 10 is used to obtain the vehicle status information, battery temperature information and the exhaust stage and flow opening relationship table; an exhaust activation module 20, for obtaining a coolant exhaust mode state according to the state information; The exhaust control module 30 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.

[0084] The thermal management coolant exhaust device provided by the present application adopts the thermal management coolant exhaust method in the above embodiment, which 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 the present application are the same as the beneficial effects of the thermal management coolant exhaust method provided by the above embodiment, and the other technical features of the thermal management coolant exhaust device are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0085] In one embodiment, the exhaust activation module 20 is also used to obtain the exhaust switch state, starting gear, voltage, discharge state and charging state according to the status information; when the exhaust switch state is in the open state, the starting gear is in the open gear, the voltage is high voltage, the discharge state is in the non-discharge state and the charging state is in the non-charged state, confirm that the coolant exhaust mode state is in the running state.

[0086] In one embodiment, the exhaust control module 30 is further used to obtain the current exhaust time and the battery temperature and cooling time relationship table when the coolant exhaust mode state is in the running state; 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.

[0087] In one embodiment, the exhaust control module 30 is further used to process the battery temperature information according to a preset strategy to obtain a target temperature; and to match the battery temperature and cooling time relationship table according to the target temperature to obtain a cooling time.

[0088] In one embodiment, the exhaust control module 30 is also used 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 the preset exhaust time.

[0089] In one embodiment, the thermal management coolant exhaust control device also includes a fault processing module 40, which is used to obtain the total exhaust time when the coolant exhaust mode is in the running state; when the total exhaust time is less than the preset total exhaust time, perform fault detection on the exhaust components to obtain fault information; confirm the current fault level according to the fault information and perform fault control.

[0090] In one embodiment, the fault processing module 40 is also used 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, the coolant exhaust mode state is switched from the running state to the stopping state, and the fault information is uploaded.

[0091] The present application provides a thermal management coolant exhaust control device, which includes: at least one processor; and a memory that is communicatively connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the thermal management coolant exhaust control method in the above-mentioned embodiment one.

[0092] Reference below Figure 5 , which shows a schematic diagram of the structure of a thermal management coolant exhaust control device suitable for implementing the embodiment of the present application. The thermal management coolant exhaust control device in the embodiment 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), 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 only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0093] like 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 can 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 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the thermal management coolant exhaust control device are also stored. The processing device 1001, ROM1002 and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 1003 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 1009. The communication device 1009 can allow the thermal management coolant exhaust control device to communicate with other devices wirelessly or by wire to exchange data. Although the figure shows a thermal management coolant exhaust control device with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems may be implemented or have alternatively.

[0094] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. 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 a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0095] The thermal management coolant exhaust control device provided by the present application adopts the thermal management coolant exhaust control method in the above embodiment, which 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 the beneficial effects of the thermal management coolant exhaust control method provided by the above embodiment, and the 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, which will not be repeated here.

[0096] It should be understood that the various parts 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 any one or more embodiments or examples in a suitable manner.

[0097] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0098] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, the computer-readable program instructions being used to execute the thermal management coolant exhaust control method in the above-mentioned embodiment.

[0099] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM: Random Access Memory), a read-only memory (ROM: Read Only Memory), an erasable programmable read-only memory (EPROM: Erasable Programmable Read Only Memory or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM: CD-Read Only Memory), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency: Radio Frequency), etc., or any suitable combination of the above.

[0100] The computer-readable storage medium may be included in the thermal management coolant exhaust control device; or may exist independently without being assembled into the thermal management coolant exhaust control device.

[0101] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by the thermal management coolant exhaust control device, the thermal management coolant exhaust control device: obtains vehicle status information, battery temperature information and a table of the relationship between exhaust stage and flow opening; obtains the coolant exhaust mode status according to the status information; and performs exhaust control according to the coolant exhaust mode status, the battery temperature information and the relationship between the exhaust stage and flow opening.

[0102] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate 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 may 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 may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0103] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0104] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0105] The readable storage medium provided in the present application is a computer-readable storage medium, which 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 in the present application are the same as the beneficial effects of the thermal management coolant exhaust control method provided in the above-mentioned embodiment, and will not be repeated here.

[0106] The present application also provides a computer program product, including a computer program, which implements the steps of the thermal management coolant exhaust control method as described above when executed by a processor.

[0107] The computer program product provided in 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 in this application are the same as the beneficial effects of the thermal management coolant exhaust control method provided in the above embodiment, which will not be repeated here.

[0108] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A thermal management coolant exhaust control method, characterized in that: The method comprises: Obtain vehicle status information, battery temperature information, and exhaust stage and flow opening relationship table; 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 is used to obtain vehicle status information, battery temperature information, and a relationship table between exhaust stage and flow opening; 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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