WO2024001899A1 - Temperature adjustment method and apparatus, and electronic device and medium - Google Patents

Abstract

A temperature adjustment method and apparatus, and an electronic device and a medium. The temperature adjustment method comprises: acquiring feedback information, which is sent by a power system of a vehicle (S110); according to the feedback information, determining a control signal for a temperature adjustment apparatus in a temperature control system (S120); and controlling the working state of the temperature adjustment apparatus on the basis of the control signal, so as to adjust the temperature of the power system by means of the temperature adjustment apparatus (S130).

Description

Temperature adjustment methods, devices, electronic equipment and media

This application claims priority to the Chinese patent application with application number 202210772877.7, which was submitted to the China Patent Office on June 30, 2022. The entire content of this application is incorporated into this application by reference.

Technical field

This application relates to the technical field of vehicle thermal control, such as temperature adjustment methods, devices, electronic equipment and media.

Background technique

New energy electric vehicles are becoming more and more popular due to their comfortable driving experience and low driving costs. However, the power system of electric vehicles is greatly affected by temperature, which is a problem that cannot be ignored.

The related technology mainly uses a motor fan to cool the motor body. If the motor temperature is low, the fan is controlled to run at a low speed. When the motor temperature is high, the fan is controlled to run at a high speed.

The related technology can only play a cooling role, and the cooling object is single, and there is no temperature control of the entire power system of the electric vehicle.

Contents of the invention

This application provides a temperature adjustment method, device, electronic equipment and medium to achieve integrated temperature control of the electric vehicle power system.

In the first aspect, this application provides a temperature adjustment method, including:

Obtain feedback information sent by the vehicle's power system;

According to the feedback information, determine a control signal for the temperature adjustment device in the temperature control system;

Based on the control signal, the working state of the temperature adjustment device is controlled to adjust the temperature of the power system through the temperature adjustment device.

In a second aspect, this application provides a temperature adjustment device, including:

A feedback information acquisition module is configured to obtain feedback information sent by the vehicle's power system;

A control signal determination module configured to determine a control signal for the temperature adjustment device in the temperature control system based on the feedback information;

A temperature adjustment module is configured to control the working state of the temperature adjustment device based on the control signal, so as to adjust the temperature of the power system through the temperature adjustment device.

In a third aspect, this application provides an electronic device, including:

one or more processors;

a storage device configured to store one or more programs;

When the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the temperature adjustment method as described in the first aspect.

In a fourth aspect, the present application provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the temperature adjustment method as described in the first aspect is implemented.

Description of drawings

Figure 1 is a flow chart of a temperature adjustment method provided in Embodiment 1 of the present application;

Figure 2 is a partial power system schematic diagram of a temperature adjustment method provided in Embodiment 1 of the present application;

Figure 3 is a flow chart of a temperature adjustment method provided in Embodiment 2 of the present application;

Figure 4 is a schematic diagram of a power system of a temperature adjustment method provided in Embodiment 2 of the present application;

Figure 5 is a flow chart of a temperature adjustment method provided in Embodiment 3 of the present application;

Figure 6 is a flow chart of a temperature adjustment method provided in Embodiment 4 of the present application;

Figure 7 is a flow chart of a temperature adjustment method provided in Embodiment 5 of the present application;

Figure 8 is a flow chart of a temperature adjustment method provided in Embodiment 6 of the present application;

Figure 9 is a flow chart of a temperature adjustment method provided in Embodiment 7 of the present application;

Figure 10 is an overheating fault handling flow chart provided in Embodiment 7 of the present application;

Figure 11 is a schematic structural diagram of a temperature regulating device provided in Embodiment 8 of the present application;

FIG. 12 is a schematic structural diagram of an electronic device provided in Embodiment 9 of the present application.

Detailed ways

It is to be understood that the specific embodiments described herein are merely for explanation of the present application. In addition, for convenience of description, only parts relevant to the present application are shown in the drawings.

Before discussing the exemplary embodiments, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts depict various steps as a sequential process, many of the steps may be performed in parallel, concurrently, or simultaneously. Additionally, the order of multiple steps can be rearranged. The process may be terminated when its operation is completed, but may also have additional steps not included in the figures. The processing may correspond to a method, function, procedure, subroutine, subroutine, or the like.

Concepts such as "first" and "second" mentioned in the embodiments of this application are only used to distinguish different devices, modules, units or other objects, and are not used to limit the scope of these devices, modules, units or other objects. The sequence or interdependence of functions performed.

Related technologies are introduced below.

Embodiment 1

Figure 1 is a flow chart of a temperature adjustment method provided in Embodiment 1 of the present application. This embodiment can be applied to temperature adjustment situations. The temperature adjustment method may be executed by a temperature adjustment device, which may be implemented in software and/or hardware and integrated in an electronic device. Electronic equipment includes: desktop computers, laptops, smartphones, servers and other electronic equipment.

As shown in Figure 1, the method includes the following steps:

S110: Obtain feedback information sent by the vehicle's power system.

The power system can be a system that generates vehicle power, including the power system of a fuel vehicle, the power system of an electric vehicle, and the power system of a hybrid vehicle. As shown in Figure 2, taking the power system of an electric vehicle as an example, the power system can include: DC converters, power batteries, drive motors, transmissions and inverters, etc. The feedback information may be temperature information and/or temperature-related information, such as drive motor temperature information, battery temperature information, coolant temperature information for cooling the power system, charger temperature information and drive motor coolant flow request Information etc. In the embodiment of the present application, the feedback information can be determined according to the number of components included in the power system. The embodiment of the present application does not limit the amount of feedback information. For example, the vehicle has only one DC converter, and the feedback information can include the DC converter. Temperature information, if there are two DC converters, the feedback information can include the temperature information of the two DC converters.

The vehicle power system includes many components and there are many types and quantities of feedback information. It is necessary to process the feedback information of the power system in a unified manner and adjust the temperature of the vehicle power system as a whole. For example, the feedback information of the power system can be sent to the vehicle controller by the sensors and/or controllers of the power system, and the vehicle controller combines all the feedback information for collaborative processing.

S120: Determine a control signal for the temperature adjustment device in the temperature control system based on the feedback information.

The temperature control system can regulate the temperature of the vehicle's power system and can include multiple temperature regulating devices. The temperature regulating device can adjust the temperature of the vehicle's power system, such as high-pressure water heating, electric water pumps, electric fans and two-way valves. The control signal can be a signal that controls the temperature regulating device, or a signal sent by the microprocessor to the memory or input and output device interface, such as a switch signal of a cooling or heating device, a control signal that controls the degree of cooling or heating, and a coolant flow signal.

In the embodiment of the present application, different temperature adjustment measures can be implemented according to the temperature condition of the vehicle power system. For example, if the vehicle is in the charging stage and the temperature of the charger is too high, the control signal may be a signal that controls the temperature of the charger. If the temperature of the vehicle drive motor is too high, the control signal may be a signal to control the temperature of the drive motor to cool down. If the vehicle is in a vigorous driving state and the temperatures of the drive motor and inverter are very high, the control signal can be a signal that controls the temperature of the drive motor and inverter, and this signal increases the cooling intensity and can quickly reduce the temperature of the drive motor and inverter. Inverter temperature. If the temperature of the power battery is low, the control signal may be a signal to control the temperature of the power battery.

S130. Based on the control signal, control the working state of the temperature adjustment device to adjust the temperature of the power system through the temperature adjustment device.

After the control signal is determined, the temperature regulating device corresponding to each control signal begins to change the working state. Multiple temperature regulating devices can work together to jointly regulate the temperature of the vehicle power system. For example, the temperature regulating device may change from a closed state to an on state, from an on state to a closed state, from a low-range operation to a high-range operation, and so on.

A temperature adjustment method provided in Embodiment 1 of the present application determines the control signal for the temperature adjustment device in the temperature control system by obtaining feedback information sent by the vehicle power system, and changes the working state of the temperature adjustment device according to the control signal, thereby achieving Temperature control of power systems. This technical solution solves the problem that the fan can only reduce the temperature of the power system, and achieves the effect of both heating up and cooling down the vehicle power system, and the temperature adjustment method of this technical solution can integrate the temperature of the vehicle power system. , ensuring the reliability, safety and stability of vehicle operation.

Embodiment 2

Figure 3 is a flow chart of a temperature adjustment method provided in Embodiment 2 of the present application. This embodiment is based on the above embodiment and describes the temperature adjustment. Technical details that are not described in detail in this embodiment may be referred to any of the above embodiments.

As shown in Figure 3, the method includes the following steps:

S210: Obtain the battery temperature, battery water inlet coolant temperature, ambient temperature and working status of the battery management device sent by the battery management device in the vehicle's power system.

The battery management device can send battery status information, such as temperature information of the battery body, battery water inlet coolant temperature information, ambient temperature information, and working status information of the battery management device. The working status information of the battery management device may include an off state and an on state. During the charging and discharging process of the battery, the temperature may rise sharply, which affects the normal operation of the battery. In turn, the battery needs to be cooled. The battery temperature is also affected by the external environment, so the above feedback information is obtained.

S220: Determine a control signal for the heat pump in the temperature control system based on the feedback information.

The heat pump can reduce the coolant temperature and can be cooled through the internal condensation device. As shown in Figure 4, the heat pump can be installed in the pipeline where the power battery is located. According to the feedback information, the working status of the heat pump can be controlled through the control signal, thereby controlling the battery temperature.

In the embodiment of the present application, determining the control signal for the heat pump based on the feedback information includes: if the feedback information satisfies at least one of the following, generating a control signal for turning on the heat pump: the battery temperature is greater than the first preset temperature ; The battery water inlet coolant temperature is greater than the second preset temperature; the ambient temperature is greater than the third preset temperature; if the feedback information meets the following conditions, a heat pump shutdown control signal is generated: the battery temperature is less than the third preset temperature Four preset temperatures; the battery water inlet coolant temperature is less than the fifth preset temperature; the working state of the battery management device is a closed state.

The first preset temperature, the second preset temperature, the third preset temperature, the fourth preset temperature and the fifth preset temperature can be determined according to actual conditions, and are not limited in this embodiment of the present application. For example, if the battery temperature is greater than 38 degrees Celsius, the battery water inlet coolant temperature is greater than 30 degrees Celsius, or the ambient temperature is greater than 26 degrees Celsius, a start control signal for the heat pump is generated. If the battery temperature is less than 30 degrees Celsius, the battery water inlet coolant temperature is less than 22 degrees Celsius, and the battery is powered off at high voltage, a shutdown control signal for the heat pump is generated.

S230: Based on the control signal, control the working state of the heat pump to adjust the temperature of the power system through the temperature adjustment device.

A temperature adjustment method provided in the second embodiment of the present application is explained on the basis of the above embodiment. The control signal of the heat pump is determined based on the battery temperature, the battery water inlet coolant temperature, the external environment temperature and the working status of the battery management device. , thereby adjusting the battery temperature and solving the problem of excessive battery temperature.

Embodiment 3

Figure 5 is a flow chart of a temperature adjustment method provided in Embodiment 3 of the present application. This embodiment is based on the above embodiment and describes the temperature adjustment. Technical details that are not described in detail in this embodiment may be referred to any of the above embodiments.

As shown in Figure 5, the method includes the following steps:

S310: Obtain the power consumption sent by the DC converter in the vehicle power system.

A DC converter can convert one DC power supply into another DC power supply with different output characteristics. The power consumption may be the output current power of the DC converter, which is equal to the output voltage of the DC converter multiplied by the output current. In the embodiment of the present application, when charging, the power battery requires a certain temperature range to ensure normal operation, and the temperature of the power battery is greatly affected by the charging power.

S320: Determine the working power of the high-pressure water heater according to the power consumption; wherein the sum of the power consumption and the working power is less than a preset power threshold.

High-pressure water heating can be a heating device. As shown in Figure 4, high-pressure water heating can increase the temperature of the coolant in the pipeline where the high-pressure water heating is located. The preset power threshold can be determined according to actual conditions, and is not limited in this embodiment of the present application. The higher the working power of high-pressure water heating, the stronger the heating effect on the power battery. The lower the working power of high-pressure water heating, the weaker the heating effect on the power battery. The working power of high-pressure water heating can be determined based on the power consumption to maintain power. The temperature of the battery is within a certain range. And the power consumption and working power are both less than the preset power, ensuring that the temperature of the power battery does not exceed the maximum tolerable temperature range.

For example, the working power of high-pressure water heating can be controlled through a duty cycle signal, and the duty cycle signal design is shown in Table 1.

Table 1

In the embodiment of the present application, before determining the working power of the high-pressure water heater based on the power consumption sent by the DC converter in the power system, the method further includes: if the power battery in the power system is in a charging and heating state, control the power The charger in the system precharges the motor and electronic equipment; if the precharge completion signal is received, the electric water pump in the temperature control system is controlled with the first preset power; the high-pressure water heating is controlled to be turned on, and the high-pressure water heating is controlled to Second preset power operation.

The motor electronic device can be a drive motor controller, which can control the rotation direction, speed and angle of the drive motor, and can send and receive signals. The first preset power and the second preset power can be determined according to actual conditions, and are not limited in this embodiment of the present application. The power battery is in a charging and heating state, and the high-voltage water heater is temporarily not working. Precharge the motor and electronic equipment first to avoid high-voltage shock damage to components and provide safety guarantee for subsequent motor electronic equipment to control the drive motor. If the pre-charging completion signal of the motor electronic device is received, the electric water pump is controlled to operate with the first preset power, and the coolant in the pipeline begins to circulate. Turn on the high-pressure water heating, and the high-pressure water heating works at the second preset power.

In this solution, the motor electronic equipment is precharged to ensure that when the vehicle is driving, the motor electronic equipment can control the drive motor while ensuring safety.

In the embodiment of the present application, after determining the working power of the high-pressure water heater, the method further includes: Send a shutdown signal to the air conditioner in the power system to reduce power consumption.

The air conditioner can be a car air conditioner, which can adjust the temperature of the space inside the car. During the charging and heating stage, the power battery consumes a large amount of electricity and has a high battery load. You can reduce power consumption and ensure vehicle safety by turning off the air conditioner and other methods.

S330: Based on the control signal, control the working state of the high-pressure water heater to adjust the temperature of the power system through the temperature adjustment device.

The temperature adjustment method provided in the third embodiment of the present application is explained on the basis of the above embodiment. The working power of the high-pressure water heater is determined by the power consumption and the preset power threshold, thereby maintaining the charging temperature of the power battery and ensuring the safety of the power battery. The stability of the charging environment.

Embodiment 4

Figure 6 is a flow chart of a temperature adjustment method provided in Embodiment 4 of the present application. This embodiment is based on the above embodiment and describes the temperature adjustment. Technical details that are not described in detail in this embodiment may be referred to any of the above embodiments.

As shown in Figure 6, the method includes the following steps:

S410. Obtain feedback information sent by the vehicle's power system. The feedback information includes at least one of the following: coolant flow demand information sent by the motor electronic equipment in the power system, DC converter and charging in the power system. The machine temperature sent by the machine.

The flow demand information may be the coolant demand of the drive motor. For example, if the temperature of the drive motor is too high, the flow demand information may be 8L/min coolant. If the drive motor temperature is high, the flow demand information may be 4L/min coolant. The machine temperature sent by the DC converter may be the temperature of the DC converter body. The machine temperature sent by the charger can be the temperature of the charger body. As shown in Figure 4, the drive motor and the inverter are connected in series in the same coolant pipeline, and the temperatures of the drive motor and the inverter are adjusted synchronously. Therefore, you only need to obtain the coolant flow demand information sent by the motor electronic device, and there is no need to obtain it again. Information on the coolant flow requirements of the inverter.

S420: Determine a control signal for the first electric water pump in the temperature control system based on the feedback information.

In the embodiment of the present application, determining the control signal for the first electric water pump in the temperature control system based on the feedback information includes: if the feedback information satisfies at least one of the following, controlling the first electric water pump to turn on: The coolant flow demand information is greater than the first preset flow threshold; the machine temperature is greater than the sixth preset temperature; if the feedback information meets the following conditions, the first electric water pump is controlled to be closed: the coolant flow demand The information is zero; the machine temperature is less than the seventh preset temperature; the root The control signal after the first electric water pump is turned on is determined according to the following operations: determining the duty cycle of the first electric water pump operation based on the coolant flow demand information and/or the machine temperature, and determining the operation of the first electric water pump based on the duty cycle. The control signal of the first electric water pump.

The first electric water pump can circulate the coolant in the pipeline. As shown in Figure 4, the first electric water pump can be installed in the pipeline where the drive motor is located. The first preset flow threshold, the sixth preset temperature, and the seventh preset temperature can be determined according to actual conditions, and are not limited in this embodiment of the present application. The duty cycle can be the ratio of the power-on time to this cycle within a working cycle, or the ratio of the pulse occupation time to the total time within a continuous working period. For example, the larger the flow demand information is, the larger the duty cycle is, and the smaller the flow demand information is, the smaller the duty cycle is.

For example, if the coolant flow demand information is greater than 0, or the machine temperature is greater than 40 degrees Celsius, the first electric water pump is controlled to be turned on. If the coolant flow demand information is equal to 0 and the machine temperature is less than 35 degrees Celsius, the first electric water pump is controlled to be turned off. The embodiment of the present application controls the rotation speed of the first electric water pump through the duty cycle. The relationship between the duty cycle and the rotation speed of the first electric water pump is shown in Table 2. In this example, the maximum rotation speed of the electric water pump is 5000 rpm. The maximum rotation speed of the electric water pump can be determined according to The electric water pump model changes depending on the model, and will not be described in detail in this application. When the duty cycle is 0, the electric water pump is in sleep state, and when the duty cycle is [1%, 10%], the electric water pump is in emergency state, which can cope with excessive temperature of a component of the power system caused by some emergencies. The duty cycle is (10%, 15%), resetting the electric water pump. The duty cycle is [15%, 85%], the electric water pump is in the linear speed regulation zone, and the electric water pump speed increases linearly according to the increase in the duty cycle. When the duty cycle is greater than 85%, the electric water pump is in overheating emergency operation state, and the speed runs at the highest speed.

Table 2

For example, while the vehicle is driving, the vehicle controller sends a duty cycle signal based on the coolant flow demand information sent by the motor electronic device to control the operation of the first electric water pump, as shown in Table 3 below.

table 3

During the driving process of the vehicle, the vehicle controller can control the operation of the first electric water pump according to the calibration curve according to the machine temperature, and place the curve on the vehicle controller in advance. The calibration curve can be obtained through experiments or big data analysis. The embodiments of this application do not limit this. The curve can be as follows:

The curve function f(x)=ax-b, f(x) is the duty cycle, x is the machine temperature, a and b are determined according to the actual situation, and the embodiment of the present application does not limit this.

If the vehicle controller receives two or more feedback messages, it calculates the duty ratios of the multiple feedback messages respectively and outputs the maximum duty ratio to the first electric water pump. The first electric water pump controls the operating speed according to the duty ratio.

S430: Based on the control signal, control the working state of the first electric water pump to adjust the temperature of the power system through the temperature adjustment device.

A temperature adjustment method provided in the fourth embodiment of the present application is explained on the basis of the above embodiment. The working state of the first electric water pump is controlled through the coolant flow demand information and the machine temperature, thereby maintaining the charger, DC converter, The operating temperature of the inverter and drive motor ensures the reliability, safety and stability of vehicle operation.

Embodiment 5

Figure 7 is a flow chart of a temperature adjustment method provided in Embodiment 5 of the present application. This embodiment is based on the above embodiment and describes the temperature adjustment. Technical details that are not described in detail in this embodiment may be referred to any of the above embodiments.

As shown in Figure 7, the method includes the following steps:

S510: Obtain the battery temperature sent by the battery management device in the vehicle power system.

S520, according to the feedback information, determine the control for the second electric water pump in the temperature control system Signal.

In the embodiment of the present application, based on the feedback information, determining the control signal for the second electric water pump in the temperature control system includes: if it is determined that the power battery in the power system is in a working state, controlling the second electric water pump connected to the power battery. The electric water pump is turned on; the duty cycle of the operation of the second electric water pump is determined according to the battery temperature, so as to determine the operating power of the second electric water pump according to the duty cycle; if the feedback information satisfies at least one of the following, Then the second electric water pump is controlled to be turned off: the battery temperature is less than the eighth preset temperature; the working state of the battery management device is a closed state.

The second electric water pump can circulate the coolant in the pipeline. As shown in Figure 4, the second electric water pump can be installed in the pipeline where the battery is located. The eighth preset temperature can be determined according to actual conditions, and is not limited in this embodiment of the present application. For example, if the power battery is in working state, the second electric water pump is controlled to be turned on. If the battery temperature is less than 30 degrees Celsius, or the battery management device is in a closed state, the second electric water pump is controlled to be closed. The embodiment of the present application controls the rotation speed of the second electric water pump through the duty cycle. The relationship between the duty cycle and the rotation speed of the second electric water pump is as shown in Table 2.

While the vehicle is driving, the vehicle controller receives the battery temperature sent by the battery management device, determines the duty cycle of the second electric water pump according to the calibration curve, and places the curve inside the vehicle controller in advance. The calibration curve can be obtained through experiments or big data analysis. The embodiments of this application do not limit this. The curve can be as follows:

Curve function f(z)=az-b, where f(z) is the duty cycle, z is the battery temperature, and the parameter values can be calibrated, such as a=23, b=820.

S530: Based on the control signal, control the working state of the second electric water pump to adjust the temperature of the power system through the temperature adjustment device.

A temperature adjustment method provided in Embodiment 5 of the present application is explained on the basis of the above embodiment. The working state of the second electric water pump is controlled through battery temperature information, thereby maintaining the working temperature of the battery and ensuring the reliability of vehicle operation. performance, security and stability.

Embodiment 6

Figure 8 is a flow chart of a temperature adjustment method provided in Embodiment 6 of the present application. This embodiment is based on the above embodiment and describes the temperature adjustment. Technical details that are not described in detail in this embodiment may be referred to any of the above embodiments.

As shown in Figure 8, the method includes the following steps:

S610: Obtain the fan request information sent by the air conditioning electronic device in the vehicle power system, and the coolant temperature sent by the pipeline in the power system.

The air-conditioning electronic device can be an air-conditioning controller and can send fan request information to the vehicle controller. The fan request information may include multiple levels of request information. For example, if the air conditioning system is under high operating pressure and the cooling effect is affected, the fan request information may be a high-speed fan rotation request. If the air conditioning system is running normally, the fan request information may be a fan normal rotation request. information.

In the embodiment of the present application, the temperature of multiple components in the power system can be adjusted through the coolant in the pipeline. During the flow process of the coolant in the pipeline, the temperature may change, which affects the working efficiency of the temperature adjustment system. The pipeline can be adjusted The temperature of the liquid allows the temperature regulation system to work properly. For example, in vehicle air conditioners, the temperature of the refrigerant used for cooling also needs to be adjusted. According to the fan request information sent by the air conditioning electronic device, the temperature adjustment device can adjust the temperature of the refrigerant to reduce the burden on the air conditioning system.

S620: Determine a control signal for the electric fan in the temperature control system based on the feedback information.

The electric fan can be a cooling fan, which can cool the coolant in the pipe, and can be installed in the position shown in Figure 4. If the coolant temperature in the pipe is too high, the electric fan can be started to reduce the coolant temperature. If the coolant temperature in the pipe is normal, the electric fan can be turned off. If the cooling effect of the vehicle air conditioner is poor, the refrigerant temperature can be lowered by an electric fan.

In the embodiment of the present application, based on the feedback information, determining the control signal for the electric fan in the temperature control system includes: if the feedback information meets the following conditions, controlling the electric fan to run in a low gear: the coolant temperature is greater than 9 The preset temperature is less than the tenth preset temperature; the fan request information is low; if the feedback information satisfies at least one of the following, the electric fan is controlled to run at the high level: the temperature information is greater than or equal to the tenth preset temperature ; The fan request information is high-grade; if the temperature-related information meets the following conditions, the electric fan is controlled to turn off: the temperature information is less than the eleventh preset temperature; the fan request information is off.

The ninth preset temperature, the tenth preset temperature and the eleventh preset temperature are determined according to actual conditions, and are not limited in this embodiment of the present application. For example, if the coolant temperature is greater than 50 degrees Celsius and less than 60 degrees Celsius, and the fan request information is low gear, the electric fan is controlled to run at the low gear. If the coolant temperature is greater than or equal to 60 degrees Celsius, or the fan request information is high speed, the electric fan is controlled to run at high speed. If the coolant temperature is less than 45 degrees Celsius and the fan request information is turned off, the electric fan is controlled to turn off.

S630: Based on the control signal, control the working state of the electric fan to adjust the temperature of the power system through the temperature adjustment device.

A temperature adjustment method provided in Embodiment 6 of the present application is explained on the basis of the above embodiment. The working state of the electric fan is controlled through the fan request information and the coolant temperature, thereby maintaining the coolant temperature range and helping the vehicle air conditioner to reduce the temperature. the refrigerant temperature.

Embodiment 7

Figure 9 is a flow chart of a temperature adjustment method provided in Embodiment 7 of the present application. This embodiment is based on the above embodiment and describes the temperature adjustment. Technical details that are not described in detail in this embodiment may be referred to any of the above embodiments.

As shown in Figure 9, the method includes the following steps:

S710: Obtain the charger temperature sent by the charger in the vehicle power system.

S720: Determine a control signal for the two-way valve in the temperature control system based on the feedback information.

The two-way valve can be an electric valve and can control the flow of the pipeline. The temperature of the charger and other vehicle power system components may differ over time. Adding the temperature adjustment step of the charger can accurately adjust the temperature of multiple components in the vehicle power system. As shown in Figure 4, you can connect the pipes at both ends of the charger and install a two-way valve. When the charger needs temperature adjustment, you can close the two-way valve and let the liquid flow through the pipes of the charger to adjust the temperature of the charger. The effect is that when the charger does not need temperature adjustment, the two-way valve is opened and the liquid flows through the pipeline where the two-way valve is located.

In the embodiment of the present application, according to the feedback information, determining the control signal for the two-way valve in the temperature control system includes: if the charger is in the working state and the charger temperature is greater than the twelfth preset temperature, then control The two-way valve is opened; if the charger is in a non-working state or the temperature information is less than the thirteenth preset temperature, the two-way valve is controlled to be closed.

The twelfth preset temperature and the thirteenth preset temperature can be determined according to actual conditions, and are not limited in the embodiments of the present application. For example, the vehicle controller determines that the charger is in working condition and the charger temperature information sent is greater than 40 degrees Celsius, and controls the two-way valve to enter a closed state. The coolant cannot flow through the two-way valve and exits from the pipe on the charger body. The road passes. If the vehicle controller determines that the charger is not working or the charger temperature information sent by the charger is less than 35 degrees Celsius, the vehicle controller controls the two-way valve to be open and the coolant flows through the pipeline where the two-way valve is located.

S730: Based on the control signal, control the working state of the two-way valve to adjust the temperature of the power system through the temperature adjustment device.

A temperature adjustment method provided in Embodiment 7 of the present application is optimized on the basis of the above embodiment, and controls whether the liquid in the pipeline passes through the charger through a two-way valve, thereby solving the problem of the temperature of the charger and the zero impact of the rest of the vehicle power system. The problem of component temperature being out of sync.

In the embodiment of the present application, for example, under some extreme conditions, such as when the outside temperature is high and the vehicle undergoes multiple rapid acceleration operations, the drive motor and power battery may suffer from over-temperature faults. The processing flow for over-temperature faults is shown in Figure 10 shown.

If an over-temperature fault occurs in the drive motor, the motor electronic device sends a "drive motor over-temperature warning fault signal" to the vehicle controller. The vehicle controller records the over-temperature fault of the drive motor through the over-temperature fault code, limits the vehicle torque through the torque limit module, and displays the power system power limitation information through the instrument system. The driver can stop for inspection or repair according to the actual situation.

If an over-temperature warning occurs in the power battery, the battery management device sends a "power battery over-temperature warning fault signal" to the vehicle controller. The vehicle controller records the power battery over-temperature fault through the over-temperature fault code and limits the power battery's The output power displays the limited battery power information through the instrument system, and the driver can stop the vehicle for inspection or repair according to the actual situation.

In the embodiment of this application, a vehicle over-temperature fault handling method is proposed, which avoids more serious consequences of the vehicle power system by limiting the power of the power system, and protects the personal and property safety of driving personnel.

Embodiment 8

Figure 11 is a schematic structural diagram of a temperature regulating device provided in Embodiment 3 of the present application. The temperature adjustment device provided in this embodiment includes:

The feedback information acquisition module 810 is configured to acquire the feedback information sent by the vehicle's power system; the control signal determination module 820 is configured to determine the control signal for the temperature adjustment device in the temperature control system based on the feedback information; the temperature adjustment module 830, It is configured to control the working state of the temperature adjustment device based on the control signal, so as to adjust the temperature of the power system through the temperature adjustment device.

In one embodiment, the feedback information includes the battery temperature, battery water inlet coolant temperature, ambient temperature and the working status of the battery management device sent by the battery management device in the power system; the temperature adjustment device is a heat pump; the control signal determines Module 820 includes: a heat pump opening unit configured to generate a heat pump opening control signal if the feedback information satisfies at least one of the following: the battery temperature is greater than the first preset temperature; the battery water inlet coolant temperature is greater than a second preset temperature; the ambient temperature is greater than a third preset temperature; a heat pump shutdown unit configured to generate a shutdown control signal of the heat pump if the feedback information satisfies the following conditions: the battery temperature is less than the fourth preset temperature ; The battery water inlet coolant temperature is less than the fifth preset temperature; the working state of the battery management device is a closed state.

In one embodiment, the feedback information includes the power consumption sent by the DC converter in the power system; the temperature adjustment device is high-pressure water heating; the control signal determination module 820 includes: a high-pressure water heating operating power determination unit, configured to The power consumption determines the working power of the high-pressure water heating; wherein the sum of the power consumption and the working power is less than a preset power threshold.

In one embodiment, the control signal determination module 820 also includes: a motor electronic equipment precharging unit, configured to control the charger in the power system to precharge the motor electronic equipment if the power battery in the power system is in a charging and heating state; The electric water pump working unit is configured to control the electric water pump in the temperature control system with the first preset power if the charging completion signal is received; the high-pressure water heating opening unit is configured to control the high-pressure water heating to open, and control the high-pressure water heating to Second preset power operation.

In one embodiment, the control signal determination module 820 further includes: a shutdown signal sending unit configured to send a shutdown signal to the air conditioner in the power system to reduce power consumption.

In one embodiment, the feedback information includes at least one of the following: coolant flow demand information sent in the power system, machine temperature sent by the DC converter and charger in the power system; the temperature adjustment The device is a first electric water pump connected to the DC converter and inverter in the power system; the control signal determination module 820 includes: a first electric water pump starting unit, which is set to if the feedback information satisfies at least one of the following, Then control the first electric water pump to turn on: the coolant flow demand information is greater than the first preset flow threshold; the machine temperature is greater than the sixth preset temperature; the first electric water pump shutdown unit is set to if the feedback information If the following conditions are met, the first electric water pump is controlled to be closed: the coolant flow demand information is zero; the machine temperature is less than the seventh preset temperature; the first electric water pump control signal determination unit is configured to determine according to the following operations The control signal after the first electric water pump is turned on: determine the duty cycle of the first electric water pump based on the coolant flow demand information and/or the machine temperature, and determine the operation of the first electric water pump based on the duty cycle. control signal.

In one embodiment, the feedback information includes the battery temperature sent by the battery management device in the power system; the temperature adjustment device is a second electric water pump; the control signal determination module 820 includes: a second electric water pump opening unit, set to if If it is determined that the power battery in the power system is in a working state, the second electric water pump connected to the power battery is controlled to be turned on; a duty cycle determination unit is configured to determine the operating ratio of the second electric water pump based on the battery temperature. The duty cycle is to determine the operating power of the second electric water pump according to the duty cycle; the second electric water pump shut-down unit is configured to control the second electric water pump to shut down if the feedback information satisfies at least one of the following: The battery temperature is lower than the eighth preset temperature; the working state of the battery management device is a closed state.

In one embodiment, the feedback information includes fan request information sent by the air conditioning electronic equipment in the power system, the coolant temperature sent by the pipeline in the power system; the temperature adjustment device is an electric fan; and the control signal The determination module 820 includes: a low-gear operation unit, configured to control the electric fan to operate at a low-gear if the feedback information meets the following conditions: the coolant temperature is greater than the ninth preset temperature and less than the tenth preset temperature; the fan The request information is low-grade; the high-grade operation unit is configured to control the electric fan to run in high-grade if the feedback information satisfies at least one of the following: the temperature information is greater than or equal to the tenth preset temperature; the fan request information is high-grade ; The electric fan shut-down unit is configured to control the electric fan to shut down if the temperature-related information satisfies the following conditions: the temperature information is less than the eleventh preset temperature; and the fan request information is turned off.

In one embodiment, the feedback information includes the charger temperature sent by the charger in the power system; the temperature adjustment device is a two-way valve; the control signal determination module 820 includes: a two-way valve opening unit, set to if When the charger is in a working state and the charger temperature is greater than the twelfth preset temperature, the two-way valve is controlled to open; the two-way valve closing unit is set to if the charger is in a non-working state state or the temperature information is less than the thirteenth preset temperature, the two-way valve is controlled to close.

The temperature adjustment device provided in Embodiment 8 of the present application can be configured to execute the temperature adjustment method provided in any of the above embodiments, and has corresponding functions and effects.

Embodiment 9

Figure 12 shows a schematic structural diagram of an electronic device that can be used to implement embodiments of the present application. Electronic device 10 is intended to represent many forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. Electronic device 10 may also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smartphones, user equipment, wearable devices (eg, helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are examples only and are not intended to limit the implementation of the present application as described and/or claimed herein.

As shown in Figure 12, the electronic device 10 includes at least one processor 11, and a memory communicatively connected to the at least one processor 11, such as a read-only memory (Read-Only Memory, ROM) 12, a random access memory (Random Access Memory, RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor. The processor 11 can execute according to the computer program stored in the ROM 12 or loaded from the storage unit 18 into the RAM 13. A variety of appropriate actions and treatments. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via the bus 14. An input/output (I/O) interface 15 is also connected to the bus 14 .

Multiple components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a magnetic disk, an optical disk, etc. etc.; and communication unit 19, such as network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices through a computer network such as the Internet and/or various telecommunications networks, wireless networks.

Processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of the processor 11 include a central processing unit (Central Processing Unit, CPU), a graphics processing unit (Graphics Processing Unit, GPU), a variety of dedicated artificial intelligence (Artificial Intelligence, AI) computing chips, a variety of running machine learning models Algorithm processor, digital signal processor (Digital Signal Processor, DSP), and any appropriate processor, electronic equipment, microelectronic equipment, etc. The processor 11 performs a plurality of methods and processes described above, such as temperature adjustment methods.

In some embodiments, the temperature adjustment method may be implemented as a computer program, which is tangibly embodied in a computer-readable storage medium, such as the storage unit 18 . In some embodiments, portions of the computer program Some or all may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19 . When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the temperature adjustment method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the temperature adjustment method in any other suitable manner (eg, by means of firmware).

Various implementations of the systems and techniques described above may be implemented in digital electronic circuit systems, integrated circuit systems, Field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Implemented in application specific standard products (ASSP), system on chip (Application Specific Standard Parts, SOC), complex programmable logic device (Complex Programmable Logic Device, CPLD), computer hardware, firmware, software, and/or their combinations. These various embodiments may include implementation in one or more computer programs executable and/or interpreted on a programmable system including at least one programmable processor, the programmable processor The processor, which may be a special purpose or general purpose programmable processor, may receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device. An output device.

The computer program used to implement the temperature regulation method of the present application can be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that the computer program, when executed by the processor, causes the functions/operations specified in the flowcharts and/or block diagrams to be implemented. A computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.

In the context of this application, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. Computer-readable storage media may include electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium may be a machine-readable signal medium. Examples of machine-readable storage media would include one or more wire-based electrical connections, laptop disks, hard drives, RAM, ROM, Erasable Programmable Read-Only Memory (EPROM), or flash memory ), optical fiber, portable compact disk read-only memory (Compact Disc Read-Only Memory, CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the above.

To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device 10 having a display device (eg, a cathode ray tube (CRT)) configured to display information to a user Or Liquid Crystal Display (LCD) monitor and a keyboard and pointing device (eg, a mouse or a trackball) through which a user can provide input to the electronic device 10 . Other kinds of devices may also be configured to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and may be provided in any form, including Acoustic input, voice input or tactile input) to receive input from the user.

The systems and techniques described herein may be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., A user's computer having a graphical user interface or web browser through which the user can interact with implementations of the systems and technologies described herein), or including such backend components, middleware components, or any combination of front-end components in a computing system. The components of the system may be interconnected by any form or medium of digital data communication (eg, a communications network). Examples of communication networks include: Local Area Network (LAN), Wide Area Network (WAN), blockchain network, and the Internet.

Computing systems may include clients and servers. Clients and servers are generally remote from each other and typically interact over a communications network. The relationship of client and server is created by computer programs running on corresponding computers and having a client-server relationship with each other. The server can be a cloud server, also known as cloud computing server or cloud host. It is a host product in the cloud computing service system to solve the problems existing in traditional physical host and virtual private server (VPS) services. It has the disadvantages of difficult management and weak business scalability.

Steps can be reordered, added, or removed using various forms of the process shown above. For example, multiple steps described in this application can be executed in parallel, sequentially, or in different orders. As long as the desired results of the technical solution of this application can be achieved, there is no limitation here.

Claims (12)

1. A temperature regulation method comprising:

   Obtain feedback information sent by the vehicle's power system;

   According to the feedback information, determine a control signal for the temperature adjustment device in the temperature control system;

   Based on the control signal, the working state of the temperature adjustment device is controlled to adjust the temperature of the power system through the temperature adjustment device.
2. The method according to claim 1, wherein the feedback information includes battery temperature, battery water inlet coolant temperature, ambient temperature and the working status of the battery management device sent by the battery management device in the power system; The temperature regulating device is a heat pump;

   Determining a control signal for the temperature adjustment device in the temperature control system based on the feedback information includes:

   When the feedback information satisfies at least one of the following, a start control signal for the heat pump is generated:

   The battery temperature is greater than the first preset temperature;

   The battery water inlet coolant temperature is greater than the second preset temperature;

   The ambient temperature is greater than the third preset temperature;

   When the feedback information meets the following conditions, a shutdown control signal for the heat pump is generated:

   The battery temperature is less than the fourth preset temperature;

   The battery water inlet coolant temperature is less than the fifth preset temperature;

   The working state of the battery management device is a closed state.
3. The method according to claim 1, wherein the feedback information includes power consumption sent by the DC converter in the power system; the temperature adjustment device is a high-pressure water heater;

   Determining a control signal for the temperature adjustment device in the temperature control system based on the feedback information includes:

   According to the power consumption, the working power of the high-pressure water heater is determined; wherein the sum of the power consumption and the working power is less than a preset power threshold.
4. The method according to claim 3, before determining the working power of the high-pressure water heater based on the power consumption, further comprising:

   When the power battery in the power system is in a charging and heating state, control the charger in the power system to precharge the motor electronic equipment;

   When the precharge completion signal is received, control the electric water pump in the temperature control system to operate with the first preset power;

   Control the high-pressure water heater to be turned on, and control the high-pressure water heater to operate at a second preset power.
5. The method according to claim 3, after determining the working power of the high-pressure water heating, further comprising:

   Send a shutdown signal to the air conditioner in the power system to reduce power consumption.
6. The method according to claim 1, wherein the feedback information includes at least one of the following: coolant flow demand information sent by motor electronic equipment in the power system, DC converter and charger in the power system The sent machine temperature; the temperature adjustment device is the first electric water pump connected to the DC converter and the inverter in the power system;

   Determining a control signal for the temperature adjustment device in the temperature control system based on the feedback information includes:

   When the feedback information satisfies at least one of the following, the first electric water pump is controlled to be turned on:

   The coolant flow demand information is greater than the first preset flow threshold;

   The machine temperature is greater than the sixth preset temperature;

   When the feedback information meets the following conditions, the first electric water pump is controlled to be turned off:

   The coolant flow demand information is zero;

   The machine temperature is less than the seventh preset temperature;

   The control signal after the first electric water pump is turned on is determined according to the following operations:

   A duty cycle for operating the first electric water pump is determined based on at least one of the coolant flow demand information and the machine temperature, and a control signal for the first electric water pump is determined based on the duty cycle.
7. The method according to claim 1, wherein the feedback information includes battery temperature sent by a battery management device in the power system; the temperature adjustment device is a second electric water pump;

   Determining a control signal for the temperature adjustment device in the temperature control system based on the feedback information includes:

   When it is determined that the power battery in the power system is in a working state, control the second electric water pump connected to the power battery to start;

   Determine the duty cycle of the operation of the second electric water pump according to the battery temperature, so as to determine the operating power of the second electric water pump according to the duty cycle;

   When the feedback information satisfies at least one of the following, the second electric water pump is controlled to be turned off:

   The battery temperature is less than the eighth preset temperature;

   The working state of the battery management device is a closed state.
8. The method according to claim 1, wherein the feedback information includes fan request information sent by air conditioning electronic equipment in the power system and coolant temperature sent by pipelines in the power system; the temperature adjustment device For electric fans;

   Determining a control signal for the temperature adjustment device in the temperature control system based on the feedback information includes:

   When the feedback information meets the following conditions, the electric fan is controlled to run at a low gear:

   The coolant temperature is greater than the ninth preset temperature and less than the tenth preset temperature;

   The fan request information is low;

   When the feedback information satisfies at least one of the following, the electric fan is controlled to run at a high speed:

   The temperature information is greater than or equal to the tenth preset temperature;

   The fan request information is high-level;

   When the temperature-related information meets the following conditions, the electric fan is controlled to turn off:

   The temperature information is less than the eleventh preset temperature;

   The fan request information is turned off.
9. The method according to claim 1, wherein the feedback information includes the charger temperature sent by the charger in the power system; the temperature adjustment device is a two-way valve;

   Determining a control signal for the temperature adjustment device in the temperature control system based on the feedback information includes:

   When the charger is in a working state and the charger temperature is greater than the twelfth preset temperature, control the two-way valve to open;

   When the charger is in a non-working state or the temperature information is less than the thirteenth preset temperature, the two-way valve is controlled to close.
10. A temperature regulating device including:

    A feedback information acquisition module is configured to obtain feedback information sent by the vehicle's power system;

    A control signal determination module configured to determine a control signal for the temperature adjustment device in the temperature control system based on the feedback information;

    A temperature adjustment module is configured to control the working state of the temperature adjustment device based on the control signal, so as to adjust the temperature of the power system through the temperature adjustment device.
11. An electronic device including:

    at least one processor; and

    a memory communicatively connected to the at least one processor; wherein,

    The memory stores a computer program executable by the at least one processor, the computer program being executed by the at least one processor, so that the at least one processor can execute any one of claims 1-9 Described temperature adjustment method.
12. A computer-readable storage medium stores a computer program. When the program is executed by a processor, the temperature adjustment method according to any one of claims 1-9 is implemented.