CN115158004A

CN115158004A - Temperature adjusting method, temperature adjusting device, electronic device, and medium

Info

Publication number: CN115158004A
Application number: CN202210771974.4A
Authority: CN
Inventors: 伍庆龙
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-10-11

Abstract

The invention discloses a temperature adjusting method, a temperature adjusting device, electronic equipment and a medium. The method comprises the following steps: acquiring temperature related information of a power system of a vehicle through a sensor and/or a controller corresponding to the power system; determining a control signal according to the temperature correlation information; and controlling a temperature adjusting system to adjust the temperature of the power system according to the control signal. Through the technical scheme, the temperature regulation effect on the vehicle power system is improved, and the reliability, safety and stability of vehicle operation are ensured.

Description

Temperature adjusting method, temperature adjusting device, electronic device, and medium

Technical Field

The embodiment of the invention relates to the technical field of automobile heat control, in particular to a temperature adjusting method, a temperature adjusting device, electronic equipment and a medium.

Background

With the development of socio-economy, automobiles are becoming more and more popular. The power system of the automobile is greatly influenced by temperature, and how to control the temperature of the power system of the automobile is a problem to be solved urgently.

In the prior art, a motor of an automobile is usually cooled by turning on a fan, when the temperature of the motor is high, the fan runs at a low speed, and when the temperature of the motor is very high, the fan enters a high-speed running state.

However, when the fan breaks down or fails, the motor cannot be cooled, and the fan only cools part of parts of the automobile, so that the cooling effect on the whole power system of the automobile is poor, and the running stability of the automobile is influenced.

Disclosure of Invention

The invention provides a temperature adjusting method, a temperature adjusting device, electronic equipment and a medium, which are used for improving the effect of adjusting the temperature of a vehicle power system and ensuring the reliability, safety and stability of vehicle operation.

In a first aspect, an embodiment of the present invention provides a temperature adjustment method, including:

acquiring temperature related information of a power system of a vehicle through a sensor and/or a controller corresponding to the power system;

determining a control signal according to the temperature correlation information;

and controlling a temperature adjusting system to adjust the temperature of the power system according to the control signal.

In a second aspect, an embodiment of the present invention provides a temperature adjustment device, including:

the temperature related information acquisition module is used for acquiring temperature related information of a power system of a vehicle through a sensor and/or a controller corresponding to the power system;

the control signal determining module is used for determining a control signal according to the temperature related information;

and the temperature adjusting module is used for controlling a temperature adjusting system to adjust the temperature of the power system according to the control signal.

In a third aspect, an embodiment of the present invention provides an electronic device, including:

one or more processors;

storage means for storing one or more programs;

when executed by the one or more processors, cause the one or more processors to implement the method of regulating temperature as described in the first aspect.

In a fourth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the temperature adjustment method according to the first aspect.

According to the temperature adjusting method provided by the embodiment of the invention, the control signal is determined by acquiring the temperature correlation information of the vehicle power system, and the temperature adjusting system executes the control signal to adjust the temperature of the vehicle power system. The technical scheme solves the problems that the fan can only cool and the cooling effect is poor, improves the temperature adjusting effect on the vehicle power system, and ensures the reliability, safety and stability of vehicle operation.

Drawings

The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numbers refer to the same or similar elements. It should be understood that the drawings are schematic and that elements and features are not necessarily drawn to scale.

Fig. 1 is a flowchart of a temperature adjustment method according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a portion of a power system for a method of temperature regulation according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a temperature adjustment method according to an embodiment of the present invention;

fig. 4 is a flowchart of a temperature adjustment method according to a second embodiment of the present invention;

fig. 5 is a flow chart illustrating a thermal failure processing of a precursor motor according to a second embodiment of the present invention;

fig. 6 is a flowchart illustrating a thermal fault processing of a rear drive motor according to a second embodiment of the present invention;

fig. 7 is a flowchart illustrating a dual-motor thermal fault processing method according to a second embodiment of the present invention;

fig. 8 is a schematic structural diagram of a temperature adjustment device according to a third embodiment of the present invention;

fig. 9 is a schematic structural diagram of an electronic device according to a fourth embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. In addition, the embodiments and features of the embodiments in the present invention may be combined with each other without conflict. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the steps as a sequential process, many of the steps can be performed in parallel, concurrently, or simultaneously. In addition, the order of the steps may be rearranged. The process may be terminated when its operations are completed, but could have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.

It should be noted that the terms "first", "second", and the like in the embodiments of the present invention are only used for distinguishing different apparatuses, modules, units, or other objects, and are not used for limiting the order or interdependence of the functions performed by these apparatuses, modules, units, or other objects.

For a better understanding of embodiments of the present invention, the related art will be described below.

Example one

Fig. 1 is a flowchart of a temperature adjustment method according to an embodiment of the present invention, where the embodiment is applicable to a situation of adjusting a temperature of a power system of an automobile. In particular, the temperature adjustment method may be performed by a temperature adjustment device, which may be implemented in software and/or hardware and integrated in an electronic device. Further, electronic devices include, but are not limited to: desktop computers, notebook computers, smart phones, servers, and other electronic devices.

As shown in fig. 1, the method specifically includes the following steps:

and S110, acquiring temperature related information of a power system of the vehicle through a sensor and/or a controller corresponding to the power system.

The power system may be a system for generating vehicle power, including but not limited to a power system of a fuel automobile, a power system of an electric automobile, and a power system of a hybrid automobile, as shown in fig. 2, taking the power system of the electric automobile as an example, the power system may include: direct current converter, power battery, motor, inverter, etc. The sensor may be a detection device, which can convert the sensed information into an electric signal or other forms of information output according to a certain rule, and can meet the requirements of information transmission, processing, storage, display, recording, control and the like, for example, a temperature sensor, a flow sensor and the like. The controller CAN send or receive signals, and CAN be composed of a program counter, an instruction register, an instruction decoder, a time sequence generator and an operation controller, and different controllers CAN communicate with each other through CAN network signals. The temperature related information may be temperature information and/or temperature related information, such as motor temperature information, fluid flow information required by the motor, motor speed information, inverter temperature information, and the like.

In this embodiment of the present application, the temperature-related information of each component of the power system of the vehicle may be acquired by a sensor and/or a controller additionally disposed in the power system, or may be acquired by a sensor and/or a controller carried by the component itself, which is not limited in this embodiment of the present application. For example, the temperature information of a motor in a vehicle power system can be acquired by an additionally configured temperature sensor; or, the motor itself can be provided with a temperature sensor, and the temperature information can be directly read without additionally installing the temperature sensor.

For example, in an electric vehicle, the temperature sensor may acquire temperature information of the motor and temperature information of the inverter, and the controller of the motor may acquire information of a flow demand of the coolant. In the embodiment of the application, the obtained temperature related information of the power system may be determined according to components included in the power system, for example, if the automobile has only one inverter, the temperature related information of the inverter may be obtained, and if there are two inverters, the temperature related information of the two inverters may be obtained respectively.

In this embodiment of the present application, optionally, the temperature related information includes temperature information; the power system comprises a direct current converter, a charger and a pipeline; correspondingly, the temperature related information of the power system of the vehicle is acquired through a sensor corresponding to the power system, and the temperature related information comprises the following steps: the temperature information corresponding to the direct current converter, the charger and the pipeline is respectively monitored through a sensor arranged in the direct current converter, a sensor arranged in the charger and a sensor arranged in the pipeline.

In this scheme, taking an electric vehicle as an example, the power system may include a charger for charging the vehicle, a dc converter for regulating the voltage of the battery, and a pipeline for placing a temperature regulating liquid. The temperature-related information may include temperature information of a charger, a dc converter, and a pipeline, and may be acquired from sensors installed in these components.

Optionally, if the vehicle is a fuel automobile, the power system may further include an engine, a clutch, a differential, a universal joint, and the like, and acquire corresponding temperature information. If the vehicle is a hybrid vehicle, the power system can also comprise a driving motor, an internal combustion engine and the like, and corresponding temperature information is obtained.

In the scheme, the power system is clear to comprise not only equipment such as a motor and the like which directly generate the power of the vehicle, but also a charger and a direct current converter which serve for a battery, and a pipeline which serves for regulating the temperature of the power system.

In this embodiment of the present application, optionally, the operation of obtaining the temperature-related information of the power system of the vehicle through a controller corresponding to the power system includes at least one of the following: monitoring temperature related information corresponding to a precursor motor and a first inverter through a controller of the precursor motor in the power system; monitoring temperature related information corresponding to a rear-drive motor and a second inverter through a controller of the rear-drive motor in the power system; and determining temperature related information corresponding to the air conditioner controller through the air conditioner controller in the power system.

The front drive motor may be a motor for driving front wheels of the vehicle, and may be connected to a first inverter, and the first inverter may convert a dc voltage into an ac voltage for the front drive motor to use. The rear drive motor may be a motor that drives the rear wheels of the vehicle and may be connected to a second inverter that may convert dc voltage to ac voltage for use by the rear drive motor. The air conditioner controller can be a vehicle-mounted air conditioner controller and can feed back information to the vehicle control unit according to the refrigerating or heating condition of the air conditioner.

Optionally, as shown in fig. 3, the precursor motor and the first inverter may be connected in series in the same coolant line, and the temperature of the coolant line is adjusted, so that temperature related information in the coolant line may be obtained to reflect the temperature conditions of the precursor motor and the first inverter, and then the temperature is adjusted according to the temperature related information. The rear-drive motor and the second inverter can also be connected in series in the same cooling liquid pipeline to obtain the temperature related information in the pipeline, and the temperature is adjusted according to the temperature related information. Exemplarily, the temperature adjusting system can also reduce the temperature of a refrigerant used by the vehicle-mounted air conditioner and reduce the manufacturing cost of the whole vehicle.

And S120, determining a control signal according to the temperature related information.

The control signal may be a signal for controlling the temperature adjustment system, and may be a signal sent by the microprocessor to the memory or the input/output device interface, such as a switch signal of the temperature reduction or increase device, a control signal for controlling the temperature reduction or increase degree, and a coolant flow rate signal.

In the embodiment of the application, different temperature regulation measures can be implemented according to the temperature condition of the power system of the vehicle. For example, if the temperature of the charger is too high when the vehicle is in the charging stage, the control signal may be a signal for controlling the temperature of the charger. If the temperature of the vehicle motor is too high, the control signal can be a signal for controlling the motor to cool down. If the vehicle is in a severe driving state and the temperatures of the motor and the inverter are high, the control signal can be a signal for controlling the temperatures of the motor and the inverter, the cooling strength is increased by the signal, and the temperatures of the motor and the inverter can be quickly reduced. If the vehicle powertrain temperature is too low, affecting the output power, the control signal may be a signal controlling the vehicle powertrain temperature rise.

And S130, controlling a temperature adjusting system to adjust the temperature of the power system according to the control signal.

The temperature adjusting system can adjust the temperature of the automobile power system, and can adjust the temperature of the automobile power system by executing control signals, wherein the temperature adjusting system comprises but is not limited to an electric water pump, an electric fan and a two-way valve. The electric water pump can enable cooling liquid to circulate in the pipeline, and therefore the temperature of the power system is reduced. The electric fan can reduce the temperature of the cooling liquid in the pipeline. The two-way valve can control the cooling liquid to flow through different pipelines.

For example, when the vehicle is in a charging mode, the vehicle control unit is in a standby state, and the temperature adjusting system can be controlled to adjust the temperature of the charger. When the vehicle is in a normal driving state, the vehicle control unit is in a normal working state, and can control the temperature adjusting system to adjust the temperature of the motor, the inverter and the direct current converter. The vehicle is in a flameout state and is not charged, the vehicle control unit is in a closed state, and the temperature adjusting system does not work.

Example two

Fig. 4 is a flowchart of a temperature adjustment method according to a second embodiment of the present invention, where the second embodiment is optimized based on the foregoing embodiment to specifically describe a control signal. It should be noted that technical details that are not described in detail in the present embodiment may be referred to any of the above embodiments.

Specifically, as shown in fig. 4, the method specifically includes the following steps:

s210, acquiring temperature related information of a power system of a vehicle through a sensor and/or a controller corresponding to the power system.

In the embodiment of the present application, the operation of determining the control signal according to the temperature-related information includes at least one of S220, S230, and S240. The execution order of S220, S230, and S240 is not limited.

And S220, determining a control signal for the electric water pump in the temperature regulation system according to temperature related information corresponding to at least one of the front drive motor, the rear drive motor, the first inverter, the second inverter, the direct current converter and the charger of the power system.

As shown in fig. 2, the front driving motor may be a motor for driving front wheels of a vehicle, the rear driving motor may be a motor for driving rear wheels of the vehicle, the first inverter may be connected to the front driving motor and the power battery and convert direct current of the power battery into alternating current for the front driving motor, and the second inverter may be connected to the rear driving motor and the power battery and convert direct current of the power battery into alternating current for the rear driving motor. The charger may be a power conversion device, may be used for charging vehicles, and may be classified into a direct current charger and an alternating current charger. The electric water pump can convey liquid, consists of a pump body, a water lifting pipe, a pump seat, a submersible motor, a starting protection device and the like, and can pressurize input liquid and then output the pressurized liquid to push the liquid to flow. Specifically, the temperature of the front-drive motor, the rear-drive motor, the first inverter, the second inverter, the direct-current converter and the charger can be adjusted by adjusting the liquid flow, and the liquid flow can be controlled by the electric water pump.

For example, the temperature regulation system may be configured to regulate the temperature of various components of the vehicle powertrain by regulating the flow of coolant. If the temperature correlation information of the front-drive motor, the rear-drive motor, the first inverter, the second inverter, the direct-current converter and the charger reflects that the temperature of each part is too high, the flow of the cooling liquid can be increased, and the temperature of the corresponding part can be reduced.

In this embodiment of the application, optionally, the temperature related information corresponding to the front-drive motor, the rear-drive motor, the first inverter, and the second inverter in the power system includes flow demand information, the temperature related information corresponding to the dc converter and the charger in the power system includes temperature information, and accordingly, according to the temperature related information corresponding to at least one of the front-drive motor, the rear-drive motor, the first inverter, the second inverter, the dc converter, and the charger in the power system, a control signal for the electric water pump in the temperature adjustment system is determined, including: if the temperature related information meets at least one of the following conditions, controlling the electric water pump to be started: the flow demand information is greater than a first preset flow threshold; the temperature information is greater than a first preset temperature threshold; if the temperature correlation information meets at least one of the following conditions, controlling the electric water pump to be closed: the traffic demand information is zero; the temperature information is smaller than a second preset temperature threshold; determining a control signal after the electric water pump is started according to the following operations: and determining the operating duty ratio of the corresponding electric water pump according to the flow demand information and/or the temperature information, and determining a control signal for the electric water pump according to the duty ratio.

The flow demand information may be coolant flow demand information, for example, the temperature of the front drive motor is too high, the flow demand information may be 8L/min coolant, the temperature of the rear drive motor is high, and the flow demand information may be 4L/min coolant. The first preset flow threshold, the first preset temperature threshold and the second preset temperature threshold are determined according to actual conditions, the embodiment of the application does not limit specific numerical values, for example, the first preset flow threshold is 0, and if the flow demand information is greater than 0, the electric water pump is started. The first preset temperature threshold is 40 degrees centigrade, and if the temperature information is greater than 40 degrees centigrade, the electric water pump is started. The second preset temperature threshold is 30 degrees centigrade, and if the temperature information is less than 30 degrees centigrade, the electric water pump is turned off. The duty ratio may be a ratio of the energization time to the total time in one pulse cycle, for example, the larger the flow demand information, the larger the duty ratio, the smaller the flow demand information, and the smaller the duty ratio.

Specifically, if any corresponding flow demand information of a front drive motor, a rear drive motor, a first inverter and a second inverter of the power system is greater than a first preset flow threshold, or any corresponding temperature information of a direct current converter and a charger in the power system is greater than a first preset temperature threshold, the electric water pump can be started, and the whole vehicle control system adjusts the rotating speed of the electric water pump through a duty ratio according to the flow demand information and the temperature information, so as to control the flow of the cooling liquid. And if all the corresponding flow demand information of the front drive motor, the rear drive motor, the first inverter and the second inverter of the power system is equal to zero, and all the corresponding temperature information of the direct current converter and the charger in the power system is less than a second preset temperature threshold, closing the electric water pump.

Exemplarily, the relationship between the duty ratio and the rotation speed of the electric water pump is shown in table 1, it should be noted that the maximum rotation speed of the electric water pump in this example is 5000rpm, and the maximum rotation speed of the electric water pump may be changed according to the model of the electric water pump, which is not described in detail herein. The duty ratio is 0, the electric water pump is in a sleep state, the duty ratio is [1%,10% ], the electric water pump is in an emergency state, and the temperature of certain parts of the power system can be overhigh due to some emergency situations. The duty cycle is (10%, 15%), and the electric water pump is reset. The duty ratio is [15%,85% ], the electric water pump is in a linear speed regulation area, and the rotating speed of the electric water pump is linearly increased according to the increase of the duty ratio. The duty ratio is more than 85%, the electric water pump is in an overheat emergency operation state, and the rotating speed operates at the highest rotating speed.

TABLE 1

For example, if only the front-wheel drive motor is driven during the running process of the vehicle, the vehicle control unit sends a duty ratio signal according to the flow demand information sent by the front-wheel drive motor controller to control the electric water pump to operate, as shown in table 2 below.

TABLE 2

Controlling the operating duty cycle of an electric water pump	Corresponding to the flow demand of the front-wheel drive motor
		0	0L/min
40	≥4L/min
		60	≥7L/min
85	≥10L/min

In the running process of the vehicle, if only the rear-drive motor is driven, the vehicle control unit sends a duty ratio signal according to the flow demand information sent by the rear-drive motor controller to control the electric water pump to operate, as shown in table 3 below.

TABLE 3

Controlling the operating duty cycle of an electric water pump	Corresponding to the flow demand of the rear-drive motor
		0	0L/min
45	≥5L/min
		65	≥8L/min
85	≥10L/min

If the front-drive motor and the rear-drive motor drive the vehicle at the same time, the vehicle controller synthesizes the maximum flow demand between the front-drive motor and the rear-drive motor according to the flow demand information of the front-drive motor and the rear-drive motor, and controls the electric water pump.

In the running process of the vehicle, the vehicle control unit can receive the temperature information of the direct current converter, control the electric water pump to run according to a calibration curve, and place the curve on the vehicle control unit in advance. The calibration curve can be obtained through experiments or big data analysis, which is not limited in the embodiment of the present application, and the curve can be as follows:

the curve function f (x) = ax-b, f (x) is a duty ratio, x is an internal temperature of the dc converter body, and a and b are determined according to practical situations, which is not limited in the embodiment of the present application.

In the vehicle charging process, the vehicle control unit receives the temperature information in the charger, controls the electric water pump to operate according to a calibration curve, and places the curve on the vehicle control unit in advance. The calibration curve can be obtained through experiments or big data analysis, which is not limited in the embodiment of the present application, and the curve can be as follows:

the curve function f (y) = cy-d, f (y) is a duty ratio, y is the internal temperature of the charger body, and c and d are determined according to actual conditions, which is not limited in the embodiment of the present application.

If the vehicle control unit receives two or more temperature related information, the duty ratio of each temperature related information is respectively calculated and output to the electric water pump according to the maximum duty ratio, and the electric water pump controls the running rotating speed according to the duty ratio.

In the scheme, the switch of the electric water pump is controlled by setting the first preset flow threshold, the first preset temperature threshold and the second preset temperature threshold, the rotating speed of the electric water pump is controlled by the duty ratio, and the temperature of a vehicle power system is accurately adjusted.

And S230, determining a control signal for the electric fan in the temperature regulation system according to the temperature related information corresponding to the pipeline of the power system and/or the air conditioner controller.

In the embodiment, the temperature of each part of the power system can be adjusted through the liquid in the pipeline, the liquid in the pipeline can be changed in temperature in the flowing process, the working efficiency of the temperature adjusting system is influenced, and the temperature of the liquid in the pipeline can be adjusted, so that the temperature adjusting system works normally. For example, in a vehicle-mounted air conditioner, a cooling refrigerant also needs to be adjusted in temperature, the running condition of the air conditioner can be known according to temperature related information of an air conditioner controller, and the temperature of the refrigerant is adjusted by using a device for adjusting the temperature of liquid in a pipeline, so that the burden of an air conditioning system can be reduced.

Wherein the electric fan may be a cooling fan, may cool the cooling fluid in the duct, and may be installed at the position shown in fig. 3. Specifically, the temperature of the cooling liquid in the pipeline is too high, the electric fan can be started, the temperature of the cooling liquid is reduced, the temperature of the cooling liquid in the pipeline is normal, and the electric fan can be closed. If the refrigerating effect of the vehicle-mounted air conditioner is poor, the temperature of a refrigerant can be reduced through the electric fan according to the temperature correlation information of the air conditioner controller.

In this embodiment of the application, optionally, the temperature related information corresponding to the air conditioner controller in the power system includes fan request information, the temperature related information corresponding to the pipeline in the power system includes temperature information, and the determining of the control signal for the electric fan in the temperature adjustment system according to the temperature related information corresponding to the pipeline of the power system and/or the air conditioner controller includes: if the temperature related information meets the following conditions, controlling the electric fan to operate at a low gear: the temperature information is greater than a third temperature threshold and less than a fourth temperature threshold; the fan request information is low grade; if the temperature correlation information meets at least one of the following conditions, controlling the electric fan to operate in a high-grade state: the temperature information is greater than or equal to a fourth temperature threshold; the fan request information is high-grade; if the temperature-related information meets the following conditions, controlling the electric fan to be closed: the temperature information is less than a fifth temperature threshold; the fan request message is off.

The fan request information may be electric fan request information sent by the air conditioner controller to the vehicle controller, and may include request information of multiple levels, for example, the air conditioner system has a high operating pressure and an affected cooling effect, the fan request information may be fan high-speed rotation request information, and if the air conditioner system is operating normally, the fan request information may be fan normal rotation request information. The third temperature threshold, the fourth temperature threshold, and the fifth temperature threshold are determined according to actual conditions, which are not limited in the embodiments of the present application.

Specifically, the vehicle control unit may control the electric fan according to fan request information of the air conditioner controller and temperature information of the pipeline. And if the temperature information of the pipeline is less than the fifth temperature threshold value and the fan request information is closed, closing the electric fan. And if the temperature information of the pipeline is greater than the third temperature threshold and smaller than the fourth temperature threshold, or the fan request information is in a low gear, the electric fan runs in the low gear. And if the temperature information of the pipeline is greater than the fourth temperature threshold value, or the fan request information is high-grade, the electric fan operates in the high-grade. It should be noted that, if the gear positions of the temperature information of the pipeline and the fan request information are different, the electric fan is operated in a higher gear position, for example, the temperature information of the pipeline is greater than the third temperature threshold value and less than the fourth temperature threshold value, and the fan request information is in a high gear position, the electric fan is operated in the high gear position.

In the scheme, the working gear of the electric fan is controlled according to the temperature information of the pipeline and the fan request information of the air conditioner controller, so that the temperature of the pipeline is accurately controlled, and the vehicle-mounted air conditioner is helped to reduce the temperature of a refrigerant.

S240, determining a control signal for the two-way valve in the temperature adjusting system according to the temperature correlation information corresponding to the charger of the power system.

The two-way valve may be an electrically operated valve, which can control the flow of the pipeline, for example, the two-way valve is in the off state, the liquid in the pipeline where the two-way valve is located does not flow, the two-way valve is in the on state, and the liquid in the pipeline where the two-way valve is located can flow.

Specifically, the temperature related information of the charger can be generated in the vehicle charging state, the parts of the rest vehicle power system can generate the temperature related information in the vehicle running state, the temperature regulation of the charger and the parts of the rest vehicle power system may have time difference, the temperature regulation step of the charger is added, and the temperature of each part of the vehicle power system can be accurately regulated. As shown in fig. 3, the two-way valve can be connected to the pipelines at the two ends of the charger, and the two-way valve can be installed, when the temperature of the charger needs to be adjusted, the two-way valve can be closed, and the liquid flows through the pipeline of the charger, so that the temperature of the charger can be adjusted.

In the embodiment of the application, optionally, the temperature related information corresponding to the charger of the power system includes temperature information; correspondingly, determining a control signal for the two-way valve in the temperature regulation system according to the temperature related information corresponding to the charger of the power system comprises the following steps: if the charger is in a working state and the temperature information is greater than a sixth temperature threshold, controlling the two-way valve to be opened; and if the charger is in a non-working state and the temperature information is smaller than a seventh temperature threshold value, controlling the two-way valve to be closed.

The sixth temperature threshold and the seventh temperature threshold are determined according to actual conditions, and the embodiments of the present application do not limit this. For example, the sixth temperature threshold may be 40 degrees celsius, the seventh temperature threshold may be 35 degrees celsius, the vehicle controller determines that the charger is in the working state and the sent temperature information of the charger is greater than 40 degrees celsius, and controls the two-way valve to enter the closed state, so that the coolant cannot flow through the two-way valve and passes through a related pipeline on the charger body. And the vehicle control unit judges that the charger does not work or the temperature information of the charger sent by the charger is less than 35 ℃, the vehicle control unit controls the two-way valve to be in an open state, and the cooling liquid flows through a pipeline where the two-way valve is located.

In the scheme, whether liquid in the pipeline passes through the charger or not is controlled through the two-way valve, and the problem that the temperature of the charger and the temperatures of other parts of the vehicle power system are not synchronous is solved.

And S250, controlling a temperature adjusting system to adjust the temperature of the power system according to the control signal.

The temperature adjusting method provided by the second embodiment of the invention is optimized on the basis of the first embodiment, further refines the liquid flow, the liquid temperature and the liquid flowing pipeline required for adjusting the temperature of the vehicle power system, respectively determines control signals for the electric water pump, the electric fan and the two-way valve, achieves the effect of effectively controlling the temperature of the vehicle power system, and ensures the reliability, the safety and the stability of the vehicle operation.

In the embodiment of the present application, for example, in some limit states, for example, the outside temperature is high and the vehicle has multiple rapid acceleration operations, the over-temperature fault may occur on the motor, and the flow of processing the over-temperature fault on the precursor motor is shown in fig. 5.

If the front drive motor has an over-temperature fault, the front drive motor controller sends a 'front drive motor over-temperature early warning fault signal' to the vehicle controller, and the vehicle controller drives the vehicle by using the rear drive motor through the torque distribution module. The rear-drive motor over-temperature fault processing flow is shown in fig. 6, if the rear-drive motor has an over-temperature fault, the rear-drive motor controller sends a rear-drive motor over-temperature early warning fault signal to the vehicle controller, and the vehicle controller drives the vehicle by using the front-drive motor through the torque distribution module.

The processing flow that the front-drive motor and the rear-drive motor have over-temperature faults is shown in fig. 7, the front-drive motor controller and the rear-drive motor controller both send motor over-temperature early warning fault signals to the vehicle controller, the vehicle controller limits the power of the vehicle through the torque limiting module, the limiting information is displayed through an instrument system, and a driver can stop to check or maintain according to actual conditions.

In the embodiment of the application, the vehicle over-temperature fault processing method is provided, the vehicle is controlled by the motor without over-temperature early warning, or the power of a vehicle power system is limited, so that the motor is prevented from further damage caused by overheating, and the personal and property safety of driving personnel is protected.

EXAMPLE III

Fig. 8 is a schematic structural diagram of a temperature adjustment device according to a third embodiment of the present invention. The temperature regulation apparatus provided by the present embodiment includes:

the temperature-related information acquiring module 310 is configured to acquire temperature-related information of a power system of a vehicle through a sensor and/or a controller corresponding to the power system;

a control signal determining module 320, configured to determine a control signal according to the temperature-related information;

and the temperature adjusting module 330 is configured to control a temperature adjusting system to adjust the temperature of the power system according to the control signal.

Optionally, the temperature-related information includes temperature information; the power system comprises a direct current converter, a charger and a pipeline;

accordingly, the temperature-related information obtaining module 310 includes:

and the temperature information monitoring unit is used for respectively monitoring the temperature information corresponding to the direct current converter, the charger and the pipeline through a sensor arranged in the direct current converter, a sensor arranged in the charger and a sensor arranged in the pipeline.

Optionally, the temperature-related information obtaining module 310 includes at least one of the following:

the system comprises a precursor motor temperature related information monitoring unit, a first inverter and a second inverter, wherein the precursor motor temperature related information monitoring unit is used for monitoring temperature related information corresponding to a precursor motor and the first inverter through a controller of the precursor motor in the power system;

the rear-drive motor temperature related information monitoring unit is used for monitoring the temperature related information corresponding to the rear-drive motor and the second inverter through a controller of the rear-drive motor in the power system;

and the air conditioner controller temperature related information determining unit is used for determining the temperature related information corresponding to the air conditioner controller through the air conditioner controller in the power system.

Optionally, the control signal determining module 320 includes at least one of:

the electric water pump control signal determining unit is used for determining a control signal of an electric water pump in the temperature regulating system according to temperature related information corresponding to at least one of a front drive motor, a rear drive motor, a first inverter, a second inverter, a direct current converter and a charger of the power system;

the electric fan control signal determining unit is used for determining a control signal of an electric fan in the temperature adjusting system according to the temperature related information corresponding to the pipeline of the power system and/or the air conditioner controller;

and the two-way valve control signal determining unit is used for determining a control signal for the two-way valve in the temperature adjusting system according to the temperature correlation information corresponding to the charger of the power system.

Optionally, the temperature related information corresponding to the front drive motor, the rear drive motor, the first inverter and the second inverter in the power system includes flow demand information, the temperature related information corresponding to the dc converter and the charger in the power system includes temperature information,

accordingly, the electric water pump control signal determination unit includes:

the electric water pump starting subunit is used for controlling the electric water pump to start if the temperature correlation information meets at least one of the following conditions:

the flow demand information is greater than a first preset flow threshold;

the temperature information is greater than a first preset temperature threshold;

an electric water pump closing subunit, configured to control the electric water pump to be closed if the temperature-related information satisfies at least one of the following conditions:

the traffic demand information is zero;

the temperature information is smaller than a second preset temperature threshold;

the electric water pump control signal determination subunit is used for determining a control signal after the electric water pump is started according to the following operations:

and determining the operating duty ratio of the corresponding electric water pump according to the flow demand information and/or the temperature information, and determining a control signal for the electric water pump according to the duty ratio.

Optionally, the temperature related information corresponding to the air conditioner controller in the power system includes fan request information, the temperature related information corresponding to the pipeline in the power system includes temperature information,

accordingly, the electric fan control signal determination unit includes:

a low-gear operation subunit, configured to control the electric fan to operate in a low gear if the temperature-related information satisfies the following conditions:

the temperature information is greater than a third temperature threshold and less than a fourth temperature threshold;

the fan request information is low grade;

a high-grade operation subunit, configured to control the electric fan to operate in a high grade if the temperature-related information satisfies at least one of:

the temperature information is greater than or equal to a fourth temperature threshold;

the fan request information is high-grade;

an electric fan closing subunit, configured to control the electric fan to close if the temperature-related information satisfies the following condition:

the temperature information is less than a fifth temperature threshold;

the fan request message is off.

Optionally, the temperature related information corresponding to the charger of the power system includes temperature information;

accordingly, the two-way valve control signal determination unit includes:

the two-way valve opening subunit is used for controlling the two-way valve to be opened if the charger is in a working state and the temperature information is greater than a sixth temperature threshold value;

and the two-way valve closing subunit is used for controlling the two-way valve to be closed if the charger is in a non-working state and the temperature information is less than a seventh temperature threshold value.

The temperature adjusting device provided by the third embodiment of the invention can be used for executing the temperature adjusting method provided by any of the above embodiments, and has corresponding functions and beneficial effects.

Example four

FIG. 9 illustrates a schematic diagram of an electronic device 10 that may be used to implement embodiments of the present invention. The electronic device 10 is intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device 10 may also represent various forms of mobile devices, such as personal digital assistants, cellular telephones, smart phones, user equipment, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.

As shown in fig. 9, 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 (ROM) 12, a Random Access Memory (RAM) 13, and the like, wherein the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data necessary for the operation of the electronic apparatus 10 may also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.

A number of 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, or the like; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication, wireless networks.

The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, a Digital Signal Processor (DSP), and any suitable processor, controller, microcontroller, or the like. The processor 11 performs the various methods and processes described above, such as the temperature adjustment method.

In some embodiments, the temperature adjustment method may be implemented as a computer program that is tangibly embodied in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program 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 RAM 13 and executed by 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 by any other suitable means (e.g., by means of firmware).

Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuitry, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), system on a chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.

A computer program for implementing the temperature regulation method of the present invention may 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, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be performed. A computer program can execute entirely on a machine, partly on a machine, as a stand-alone software package partly on a machine and partly on a remote machine or entirely on a remote machine or server.

In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

To provide for interaction with a user, the systems and techniques described here may be implemented on an electronic device 10, the electronic device 10 having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which a user may provide input to the electronic device 10. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

The systems and techniques described here can be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.

The computing system may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical host and VPS service are overcome.

It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired result of the technical solution of the present invention can be achieved.

The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method of temperature regulation, comprising:

2. The method of claim 1, wherein the temperature-related information comprises temperature information; the power system comprises a direct current converter, a charger and a pipeline;

correspondingly, the temperature related information of the power system of the vehicle is acquired through a sensor corresponding to the power system, and the temperature related information comprises the following steps:

the temperature information corresponding to the direct current converter, the charger and the pipeline is respectively monitored through a sensor arranged in the direct current converter, a sensor arranged in the charger and a sensor arranged in the pipeline.

3. The method of claim 1, wherein the operation of obtaining temperature-related information of a powertrain of a vehicle via a corresponding controller of the powertrain comprises at least one of:

monitoring temperature related information corresponding to a precursor motor and a first inverter through a controller of the precursor motor in the power system;

monitoring temperature related information corresponding to a rear-drive motor and a second inverter through a controller of the rear-drive motor in the power system;

and determining temperature related information corresponding to the air conditioner controller through the air conditioner controller in the power system.

4. The method of claim 1, wherein determining a control signal based on the temperature-related information comprises at least one of:

determining a control signal for an electric water pump in a temperature regulation system according to temperature correlation information corresponding to at least one of a front drive motor, a rear drive motor, a first inverter, a second inverter, a direct current converter and a charger of the power system;

determining a control signal for an electric fan in a temperature regulation system according to temperature correlation information corresponding to a pipeline of the power system and/or an air conditioner controller;

and determining a control signal for the two-way valve in the temperature regulation system according to the temperature correlation information corresponding to the charger of the power system.

5. The method of claim 4, wherein the temperature-related information corresponding to the front-drive motor, the rear-drive motor, the first inverter, and the second inverter in the power system comprises flow demand information, the temperature-related information corresponding to the DC converter and the charger in the power system comprises temperature information,

correspondingly, the method for determining a control signal of the electric water pump in the temperature regulation system according to the temperature related information corresponding to at least one of the front drive motor, the rear drive motor, the first inverter, the second inverter, the direct current converter and the charger of the power system comprises the following steps:

if the temperature correlation information meets at least one of the following conditions, controlling the electric water pump to be started:

the flow demand information is greater than a first preset flow threshold;

if the temperature related information meets at least one of the following conditions, controlling the electric water pump to be closed:

the traffic demand information is zero;

determining a control signal after the electric water pump is started according to the following operations:

6. The method of claim 4, wherein the temperature-related information corresponding to an air conditioning controller in the power system comprises fan request information, the temperature-related information corresponding to a circuit in the power system comprises temperature information,

determining a control signal for an electric fan in a temperature regulation system according to temperature related information corresponding to a pipeline of the power system and/or an air conditioner controller, comprising:

if the temperature related information meets the following conditions, controlling the electric fan to operate at a low gear:

the fan request information is low grade;

if the temperature correlation information meets at least one of the following conditions, controlling the electric fan to operate in a high-grade state:

the fan request information is high-grade;

if the temperature-related information meets the following conditions, controlling the electric fan to be closed:

the temperature information is less than a fifth temperature threshold;

the fan request message is off.

7. The method according to claim 4, characterized in that the temperature-related information corresponding to the charger of the power system comprises temperature information;

correspondingly, determining a control signal for the two-way valve in the temperature regulation system according to the temperature related information corresponding to the charger of the power system comprises the following steps:

if the charger is in a working state and the temperature information is greater than a sixth temperature threshold, controlling the two-way valve to be opened;

and if the charger is in a non-working state and the temperature information is smaller than a seventh temperature threshold, controlling the two-way valve to be closed.

8. A temperature conditioning device, comprising:

9. An electronic device, comprising:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,

the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the method of temperature regulation according to any one of claims 1-7.

10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method for temperature adjustment according to any one of claims 1-7.