Power system heat management method and system, vehicle and storage medium

Abstract

The invention discloses a power system heat management method and system, a vehicle and a storage medium, and the power system heat management method comprises the steps that the environment temperature is obtained; comparing the environment temperature with a preset battery starting temperature to obtain a temperature comparison result; and controlling the power system to adjust the temperature of the power battery according to the temperature comparison result. The technical problem that low-temperature starting cannot be achieved through a temperature management method of the power battery in the related technology is solved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a power system heat management method, system, vehicle and storage medium. Background Art

[0002] The heat management method of pure electric vehicles is to manage the heat transfer between the electric drive and battery power components, and to manage and utilize the heat through preheating or cooling methods. The sales of pure electric vehicles on the market account for a growing proportion of new energy vehicle sales. Charging piles are gradually becoming popular in major urban areas, highway service stations, and residential areas. Pure electric vehicles, as a new type of vehicle configuration that is energy-saving, efficient, lightweight and environmentally friendly, have quickly become the preferred choice for family travel in central and southern my country.

[0003] Then, when the ambient temperature of pure electric vehicles is low, the battery performance drops rapidly, the power consumption is large, the travel range is shortened, and low-temperature starting becomes a travel problem. Therefore, solving the problem of battery temperature adaptation has become the key to maintaining the performance of pure electric vehicles. Summary of the invention

[0004] Embodiments of the present invention provide a power system thermal management method, system, vehicle and storage medium to at least solve the technical problem in the related art that the temperature management method of the power battery cannot solve the low-temperature starting.

[0005] According to one embodiment of the present invention, a power system thermal management method is provided, which is applied to a vehicle, and includes: obtaining an ambient temperature; comparing the ambient temperature with a preset battery starting temperature to obtain a temperature comparison result; and controlling the power system to adjust the power battery temperature according to the temperature comparison result.

[0006] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the temperature comparison result indicating that the ambient temperature is less than or equal to the preset battery starting temperature, starting the electric heating device to heat the battery coolant and monitoring the battery coolant temperature; in response to the battery coolant temperature being less than the preset battery operating temperature, continuously heating the battery coolant until the battery coolant temperature is equal to the preset battery operating temperature; or, in response to the battery coolant temperature being greater than or equal to the preset battery operating temperature, controlling the electric heating device to heat the power battery.

[0007] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the temperature comparison result indicating that the ambient temperature is greater than the preset battery starting temperature, comparing the power battery state of charge with a first preset state of charge to obtain a first comparison result; in response to the first comparison result indicating that the power battery state of charge is less than or equal to the first preset state of charge, comparing the battery coolant temperature with a preset battery operating temperature to obtain a second comparison result; in response to the second comparison result indicating that the battery coolant temperature is less than or equal to the preset battery operating temperature, starting the electric heating device to heat the battery coolant.

[0008] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the second comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, comparing the power battery temperature with the preset battery starting temperature to obtain a third comparison result; in response to the third comparison result indicating that the power battery temperature is less than or equal to the preset battery starting temperature, controlling the transmitter to heat the power battery; or, in response to the third comparison result indicating that the power battery temperature is greater than the preset battery starting temperature, starting the electric heating device to heat the battery coolant.

[0009] Optionally, according to the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to a first comparison result showing that the power battery state of charge is greater than a first preset state of charge, comparing the power battery state of charge with a second preset state of charge to obtain a fourth comparison result; in response to the fourth comparison result showing that the power battery state of charge is less than or equal to the second preset state of charge, comparing the power battery coolant temperature with a preset battery operating temperature to obtain a fifth comparison result; in response to the fifth comparison result showing that the power battery coolant temperature is less than or equal to the preset battery operating temperature, starting an electric heating device to heat the coolant.

[0010] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the fifth comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, comparing the power battery temperature with the preset battery starting temperature to obtain a fifth comparison result; in response to the fifth comparison result indicating that the battery temperature is less than or equal to the preset battery starting temperature, starting the electric heating device to heat the power battery; or, in response to the fifth comparison result indicating that the battery temperature is greater than the preset battery starting temperature, starting the battery cooling cycle to cool the power battery.

[0011] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to a fourth comparison result indicating that the power battery state of charge is greater than a second preset state of charge, comparing the battery coolant temperature with the drive motor temperature to obtain a sixth comparison result; in response to the sixth comparison result indicating that the battery coolant temperature is less than or equal to the drive motor temperature, controlling the drive motor to heat the power battery; or, in response to the sixth comparison result indicating that the battery coolant temperature is greater than the drive motor temperature, controlling the drive motor cooling cycle and the power battery cooling cycle to start.

[0012] According to one embodiment of the present invention, there is also provided a power system, which is applied to a vehicle and includes: a power battery, wherein the power battery is connected to a coolant storage tank via a power battery water pump, the coolant storage tank is connected to a thermistor heater via a heating system water pump, the thermistor heater is connected to a thermostat, and the thermostat is connected to the coolant storage tank; a drive motor, wherein the drive motor is connected to the coolant storage tank via a drive motor water pump, the drive motor is connected to a condenser, the condenser is connected to an evaporator via an expansion valve, both ends of a compressor are respectively connected to the condenser and the evaporator, and the condenser and the evaporator are respectively connected to a condenser fan and an evaporator fan.

[0013] According to one embodiment of the present invention, a power system thermal management system is also provided, including: an acquisition module for acquiring the ambient temperature; a comparison module for comparing the ambient temperature with a preset battery starting temperature to obtain a temperature comparison result; and a control module for controlling the power system to adjust the power battery temperature according to the temperature comparison result.

[0014] Optionally, the control module is also used to: in response to the temperature comparison result indicating that the ambient temperature is less than or equal to the preset battery starting temperature, start the electric heating device to heat the battery coolant and monitor the battery coolant temperature; in response to the battery coolant temperature being less than the preset battery operating temperature, continuously heat the battery coolant until the battery coolant temperature is equal to the preset battery operating temperature; or, in response to the battery coolant temperature being greater than or equal to the preset battery operating temperature, control the electric heating device to heat the power battery.

[0015] Optionally, the control module is also used to: in response to the temperature comparison result indicating that the ambient temperature is greater than the preset battery starting temperature, compare the power battery state of charge with a first preset state of charge to obtain a first comparison result; in response to the first comparison result indicating that the power battery state of charge is less than or equal to the first preset state of charge, compare the battery coolant temperature with a preset battery operating temperature to obtain a second comparison result; in response to the second comparison result indicating that the battery coolant temperature is less than or equal to the preset battery operating temperature, start the electric heating device to heat the battery coolant.

[0016] Optionally, the control module is also used to: in response to a second comparison result indicating that the battery coolant temperature is greater than a preset battery operating temperature, compare the power battery temperature with a preset battery starting temperature to obtain a third comparison result; in response to the third comparison result indicating that the power battery temperature is less than or equal to a preset battery starting temperature, control the transmitter to heat the power battery; or, in response to the third comparison result indicating that the power battery temperature is greater than a preset battery starting temperature, start the electric heating device to heat the battery coolant.

[0017] Optionally, the control module is also used to: in response to a first comparison result indicating that the power battery state of charge is greater than a first preset state of charge, compare the power battery state of charge with a second preset state of charge to obtain a fourth comparison result; in response to the fourth comparison result indicating that the power battery state of charge is less than or equal to the second preset state of charge, compare the power battery coolant temperature with a preset battery operating temperature to obtain a fifth comparison result; in response to the fifth comparison result indicating that the power battery coolant temperature is less than or equal to the preset battery operating temperature, start the electric heating device to heat the coolant.

[0018] Optionally, the control module is also used to: in response to the fifth comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, compare the power battery temperature with the preset battery starting temperature to obtain a fifth comparison result; in response to the fifth comparison result indicating that the battery temperature is less than or equal to the preset battery starting temperature, start the electric heating device to heat the power battery; or, in response to the fifth comparison result indicating that the battery temperature is greater than the preset battery starting temperature, start the battery cooling cycle to cool the power battery.

[0019] Optionally, the control module is also used to: in response to a fourth comparison result indicating that the power battery state of charge is greater than a second preset state of charge, compare the battery coolant temperature with the drive motor temperature to obtain a sixth comparison result; in response to the sixth comparison result indicating that the battery coolant temperature is less than or equal to the drive motor temperature, control the drive motor to heat the power battery; or, in response to the sixth comparison result indicating that the battery coolant temperature is greater than the drive motor temperature, control the drive motor cooling cycle and the power battery cooling cycle to start.

[0020] According to one embodiment of the present invention, a vehicle is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute any one of the above power system thermal management methods.

[0021] According to one embodiment of the present invention, a non-volatile storage medium is provided, in which a computer program is stored, wherein the computer program is configured to execute any of the above-mentioned power system thermal management methods when running.

[0022] According to one embodiment of the present invention, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the computer program implements any of the above-mentioned power system thermal management methods.

[0023] In an embodiment of the present invention, the ambient temperature is obtained; the ambient temperature is compared with the preset battery starting temperature to obtain a temperature comparison result; and according to the temperature comparison result, the power system is controlled to adjust the power battery temperature. When the ambient temperature is low, the present invention can adjust the power battery temperature by controlling the power system, thereby solving the technical problem that the power battery temperature management method in the related art cannot solve the low temperature starting. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 is a flow chart of a power system thermal management method according to one embodiment of the present invention;

[0026] Figure 2 is a schematic diagram of a power system architecture according to one embodiment of the present invention;

[0027] Figure 3 is an example flow chart of a power system thermal management method according to one embodiment of the present invention;

[0028] Figure 4 is a structural block diagram of a power system thermal management system according to one embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] According to an embodiment of the present invention, an embodiment of a power system thermal management method is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system containing at least one set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0032] The method embodiment can also be executed in an electronic device including a memory and a processor, a similar control device or a vehicle-mounted terminal. Taking a vehicle-mounted terminal as an example, the vehicle-mounted terminal may include one or more processors and a memory for storing data. Optionally, the vehicle-mounted terminal may also include a communication device and a display device for communication functions. It can be understood by those of ordinary skill in the art that the above structural description is only illustrative and does not limit the structure of the vehicle-mounted terminal. For example, the vehicle-mounted terminal may also include more or fewer components than the above structural description, or have a configuration different from the above structural description.

[0033] The processor may include one or more processing units. For example, the processor may include a central processing unit (CPU), a graphics processing unit (GPU), a digital signal processing (DSP) chip, a microcontroller unit (MCU), a field-programmable gate array (FPGA), a neural-network processing unit (NPU), a tensor processing unit (TPU), an artificial intelligence (AI) type processor, and other processing devices. Among them, different processing units may be independent components or integrated into one or more processors. In some instances, the electronic device may also include one or more processors.

[0034] The memory can be used to store computer programs, such as storing a computer program corresponding to the power system thermal management method in the embodiment of the present invention. The processor implements the above-mentioned power system thermal management method by running the computer program stored in the memory. The memory may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory may further include a memory remotely arranged relative to the processor, and these remote memories can be connected to the electronic device via a grid. Examples of the above-mentioned grid include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0035] The communication device is used to receive or send data via a grid. The specific examples of the above-mentioned grid may include a wireless grid provided by a communication provider of the mobile terminal. In one example, the communication device includes a grid adapter (network interface controller, NIC), which can be connected to other grid devices through a base station so as to communicate with the Internet. In one example, the communication device can be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly. In some embodiments of the present solution, the communication device is used to connect to mobile devices such as mobile phones and tablets, and instructions can be sent to the vehicle-mounted terminal through the mobile device.

[0036] The display device may be a touch screen type liquid crystal display (LCD) and a touch display (also referred to as a "touch screen" or "touch display screen"). The liquid crystal display may enable a user to interact with the user interface of the vehicle-mounted terminal. In some embodiments, the vehicle-mounted terminal has a graphical user interface (GUI), and a user may interact with the GUI by finger contact and / or gestures on the touch-sensitive surface. The human-computer interaction function here may include a vehicle gear shifting function, and executable instructions for executing the above human-computer interaction function are configured / stored in a computer program product or a readable storage medium executable by one or more processors.

[0037] Figure 1 is a flow chart of a power system thermal management method according to one embodiment of the present invention. Figure 1 As shown, the method comprises the following steps:

[0038] Step S101, obtaining the ambient temperature.

[0039] Step S102, comparing the ambient temperature with a preset battery startup temperature to obtain a temperature comparison result.

[0040] Step S103: controlling the power system to adjust the temperature of the power battery according to the temperature comparison result.

[0041] In an embodiment of the present invention, the ambient temperature is obtained; the ambient temperature is compared with the preset battery starting temperature to obtain a temperature comparison result; and according to the temperature comparison result, the power system is controlled to adjust the power battery temperature. When the ambient temperature is low, the present invention can adjust the power battery temperature by controlling the power system, thereby solving the technical problem that the power battery temperature management method in the related art cannot solve the low temperature starting.

[0042] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the temperature comparison result indicating that the ambient temperature is less than or equal to the preset battery starting temperature, starting the electric heating device to heat the battery coolant and monitoring the battery coolant temperature; in response to the battery coolant temperature being less than the preset battery operating temperature, continuously heating the battery coolant until the battery coolant temperature is equal to the preset battery operating temperature; or, in response to the battery coolant temperature being greater than or equal to the preset battery operating temperature, controlling the electric heating device to heat the power battery.

[0043] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the temperature comparison result indicating that the ambient temperature is greater than the preset battery starting temperature, comparing the power battery state of charge with a first preset state of charge to obtain a first comparison result; in response to the first comparison result indicating that the power battery state of charge is less than or equal to the first preset state of charge, comparing the battery coolant temperature with a preset battery operating temperature to obtain a second comparison result; in response to the second comparison result indicating that the battery coolant temperature is less than or equal to the preset battery operating temperature, starting the electric heating device to heat the battery coolant.

[0044] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the second comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, comparing the power battery temperature with the preset battery starting temperature to obtain a third comparison result; in response to the third comparison result indicating that the power battery temperature is less than or equal to the preset battery starting temperature, controlling the transmitter to heat the power battery; or, in response to the third comparison result indicating that the power battery temperature is greater than the preset battery starting temperature, starting the electric heating device to heat the battery coolant.

[0045] Optionally, according to the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to a first comparison result showing that the power battery state of charge is greater than a first preset state of charge, comparing the power battery state of charge with a second preset state of charge to obtain a fourth comparison result; in response to the fourth comparison result showing that the power battery state of charge is less than or equal to the second preset state of charge, comparing the power battery coolant temperature with a preset battery operating temperature to obtain a fifth comparison result; in response to the fifth comparison result showing that the power battery coolant temperature is less than or equal to the preset battery operating temperature, starting an electric heating device to heat the coolant.

[0046] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the fifth comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, comparing the power battery temperature with the preset battery starting temperature to obtain a fifth comparison result; in response to the fifth comparison result indicating that the battery temperature is less than or equal to the preset battery starting temperature, starting the electric heating device to heat the power battery; or, in response to the fifth comparison result indicating that the battery temperature is greater than the preset battery starting temperature, starting the battery cooling cycle to cool the power battery.

[0047] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to a fourth comparison result indicating that the power battery state of charge is greater than a second preset state of charge, comparing the battery coolant temperature with the drive motor temperature to obtain a sixth comparison result; in response to the sixth comparison result indicating that the battery coolant temperature is less than or equal to the drive motor temperature, controlling the drive motor to heat the power battery; or, in response to the sixth comparison result indicating that the battery coolant temperature is greater than the drive motor temperature, controlling the drive motor cooling cycle and the power battery cooling cycle to start.

[0048] Figure 2 is a schematic diagram of a power system architecture according to one embodiment of the present invention. Figure 2 As shown, the present invention also provides a power system, including: a power battery, the power battery is connected to a coolant storage tank through a power battery water pump, the coolant storage tank is connected to a thermistor heater through a heating system water pump, the thermistor heater is connected to a thermostat, and the thermostat is connected to the coolant storage tank; a drive motor, the drive motor is connected to the coolant storage tank through a drive motor water pump, the drive motor is connected to a condenser, the condenser is connected to an evaporator through an expansion valve, both ends of a compressor are respectively connected to the condenser and the evaporator, and the condenser and the evaporator are respectively connected to a condenser fan and an evaporator fan.

[0049] Reference Figure 3 , the above embodiment is exemplarily implemented as follows:

[0050] The PTC thermistor heater 1, coolant storage tank 2, thermostat 3, power battery 4, drive motor 5, PTC heating system water pump 12-1, power battery water pump 12-2, and drive motor water pump 12-3 in the figure constitute an electric drive and power battery heating system, whose main working principle is: when the battery temperature is lower than the appropriate working temperature, the PTC thermistor heater 1 works, the thermostat detects the temperature level 3, and the PTC heating system water pump 12-1 is turned on. At this time, the hotter coolant heated by the PTC flows to the battery cooling system to heat the battery coolant, and the battery heat is exchanged and heated. When the coolant temperature is not enough to heat the battery, the passage between the cooling system of the drive motor 5 and the cooling system of the power battery 4 is opened, and the drive motor water pump 12-3 is turned on to allow the hotter electric drive coolant to flow into the battery water jacket to supplement the battery with heat. In actual operation, the heating method can be selected according to the geographical location of the vehicle. When the ambient temperature is low, electric drive heating can be used first. When the heat is not enough to reach the appropriate operating temperature of the battery, PTC can be turned on for heat supplement. This method takes electric drive heating as the primary method and saves the power consumed by PTC heating. When the vehicle is in a zero-degree or sub-zero area, PTC heating is more efficient than electric drive coolant circulation heat exchange, heat transfer is faster, and the battery startup time is correspondingly shorter. Therefore, PTC heating should be used as the first choice at this time, and electric drive heating should be used as the secondary option.

[0051] The coolant storage tank 2, power battery 4, drive motor 5, condenser 6, expansion valve 7, evaporator 8, passenger compartment 9, compressor 10, condenser fan 11-1, evaporator fan 11-2, power battery water pump 12-2, and drive motor water pump 12-3 constitute a cooling system between the electric drive and the power battery. The main principle is: when the battery temperature is high, it is necessary to turn on the power battery water pump 12-2 for cooling, and at the same time turn on the evaporator fan 11-2 for air cooling and heat dissipation, turn off the drive motor water pump 12-3, and use the evaporator fan 11-2 for air cooling. At the same time, the condenser 6, expansion valve 7, evaporator 8, passenger compartment 9, and compressor 10 constitute the passenger compartment air conditioning cooling system, and use the condenser 6 to cool multiple components to achieve efficient heat dissipation.

[0052] Reference Figure 3 , illustratively, the method is implemented as follows:

[0053] The ambient temperature is obtained. When the ambient temperature is less than or equal to the preset battery starting temperature, the PTC thermistor heater is started to heat the battery coolant, and the temperature of the battery coolant is monitored at all times. When the temperature of the battery coolant is less than or equal to the suitable battery temperature (i.e., the preset battery operating temperature), the PTC thermistor heater is controlled to continuously heat the coolant until the coolant temperature is equal to the suitable battery temperature. If the coolant temperature is greater than the suitable battery temperature, the PTC thermistor heater is controlled to heat the power battery.

[0054] When the ambient temperature is greater than the battery starting temperature, determine whether the state of charge of the power battery is less than or equal to 35% (the first preset state of charge); when the state of charge of the power battery is less than or equal to 35%, determine whether the coolant temperature is less than or equal to the suitable battery temperature; if the coolant temperature is less than or equal to the suitable battery temperature, control the PTC thermistor heater to heat the battery coolant; if the coolant temperature is greater than the suitable battery temperature, further determine whether the power battery temperature is less than or equal to the battery starting temperature; if the power battery temperature is less than or equal to the battery starting temperature, control the engine to preheat the power battery; if the power battery temperature is greater than the battery starting temperature, control the PTC thermistor heater to heat the coolant.

[0055] When the state of charge of the power battery is greater than 35% and less than or equal to 55% (the second preset state of charge), determine whether the coolant temperature is less than or equal to the suitable battery temperature. If the coolant temperature is less than or equal to the suitable battery temperature, control the PTC thermistor heater to heat the coolant. If the coolant temperature is greater than the suitable battery temperature, further determine whether the battery temperature is less than or equal to the battery starting temperature. If the battery temperature is less than or equal to the battery starting temperature, control the PTC thermistor heater to heat the battery. If the battery temperature is greater than the battery starting temperature, control the battery cooling cycle to start and cool the battery.

[0056] When the state of charge of the power battery is greater than 55%, determine whether the coolant temperature is less than or equal to the motor temperature. If the coolant temperature is less than or equal to the motor temperature, control the drive motor to heat the power battery. If the coolant temperature is greater than the motor temperature, control the motor cooling cycle and the battery cooling cycle to open.

[0057] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a number of instructions for a terminal device (which can be a mobile phone, computer, server, or grid device, etc.) to execute the methods of various embodiments of the present invention.

[0058] In this embodiment, a power system thermal management system is also provided, and the device is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware of a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0059] Figure 4 FIG. 2 is a block diagram of a power system thermal management system 200 according to one embodiment of the present invention. Figure 4 As shown, the system includes: an acquisition module 201 for acquiring the ambient temperature; a comparison module 202 for comparing the ambient temperature with a preset battery starting temperature to obtain a temperature comparison result; and a control module 203 for controlling the power system to adjust the power battery temperature according to the temperature comparison result.

[0060] Optionally, the control module 203 is also used to: in response to the temperature comparison result indicating that the ambient temperature is less than or equal to the preset battery starting temperature, start the electric heating device to heat the battery coolant and monitor the battery coolant temperature; in response to the battery coolant temperature being less than the preset battery operating temperature, continuously heat the battery coolant until the battery coolant temperature is equal to the preset battery operating temperature; or, in response to the battery coolant temperature being greater than or equal to the preset battery operating temperature, control the electric heating device to heat the power battery.

[0061] Optionally, the control module 203 is also used to: in response to the temperature comparison result indicating that the ambient temperature is greater than the preset battery starting temperature, compare the power battery state of charge with a first preset state of charge to obtain a first comparison result; in response to the first comparison result indicating that the power battery state of charge is less than or equal to the first preset state of charge, compare the battery coolant temperature with a preset battery operating temperature to obtain a second comparison result; in response to the second comparison result indicating that the battery coolant temperature is less than or equal to the preset battery operating temperature, start the electric heating device to heat the battery coolant.

[0062] Optionally, the control module 203 is also used to: in response to the second comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, compare the power battery temperature with the preset battery starting temperature to obtain a third comparison result; in response to the third comparison result indicating that the power battery temperature is less than or equal to the preset battery starting temperature, control the transmitter to heat the power battery; or, in response to the third comparison result indicating that the power battery temperature is greater than the preset battery starting temperature, start the electric heating device to heat the battery coolant.

[0063] Optionally, the control module 203 is also used to: in response to a first comparison result indicating that the power battery state of charge is greater than a first preset state of charge, compare the power battery state of charge with a second preset state of charge to obtain a fourth comparison result; in response to the fourth comparison result indicating that the power battery state of charge is less than or equal to the second preset state of charge, compare the power battery coolant temperature with a preset battery operating temperature to obtain a fifth comparison result; in response to the fifth comparison result indicating that the power battery coolant temperature is less than or equal to the preset battery operating temperature, start the electric heating device to heat the coolant.

[0064] Optionally, the control module 203 is also used to: in response to the fifth comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, compare the power battery temperature with the preset battery starting temperature to obtain a fifth comparison result; in response to the fifth comparison result indicating that the battery temperature is less than or equal to the preset battery starting temperature, start the electric heating device to heat the power battery; or, in response to the fifth comparison result indicating that the battery temperature is greater than the preset battery starting temperature, start the battery cooling cycle to cool the power battery.

[0065] Optionally, the control module 203 is also used to: in response to a fourth comparison result indicating that the power battery state of charge is greater than a second preset state of charge, compare the battery coolant temperature with the drive motor temperature to obtain a sixth comparison result; in response to the sixth comparison result indicating that the battery coolant temperature is less than or equal to the drive motor temperature, control the drive motor to heat the power battery; or, in response to the sixth comparison result indicating that the battery coolant temperature is greater than the drive motor temperature, control the drive motor cooling cycle and the power battery cooling cycle to start.

[0066] An embodiment of the present invention further provides a vehicle, comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the above-mentioned power system thermal management method.

[0067] Optionally, in this embodiment, the processor in the vehicle may be configured to run a computer program to perform the following steps:

[0068] Step S101, obtaining the ambient temperature.

[0069] Step S102, comparing the ambient temperature with a preset battery startup temperature to obtain a temperature comparison result.

[0070] Step S103: controlling the power system to adjust the temperature of the power battery according to the temperature comparison result.

[0071] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the temperature comparison result indicating that the ambient temperature is less than or equal to the preset battery starting temperature, starting the electric heating device to heat the battery coolant and monitoring the battery coolant temperature; in response to the battery coolant temperature being less than the preset battery operating temperature, continuously heating the battery coolant until the battery coolant temperature is equal to the preset battery operating temperature; or, in response to the battery coolant temperature being greater than or equal to the preset battery operating temperature, controlling the electric heating device to heat the power battery.

[0072] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the temperature comparison result indicating that the ambient temperature is greater than the preset battery starting temperature, comparing the power battery state of charge with a first preset state of charge to obtain a first comparison result; in response to the first comparison result indicating that the power battery state of charge is less than or equal to the first preset state of charge, comparing the battery coolant temperature with a preset battery operating temperature to obtain a second comparison result; in response to the second comparison result indicating that the battery coolant temperature is less than or equal to the preset battery operating temperature, starting the electric heating device to heat the battery coolant.

[0073] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the second comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, comparing the power battery temperature with the preset battery starting temperature to obtain a third comparison result; in response to the third comparison result indicating that the power battery temperature is less than or equal to the preset battery starting temperature, controlling the transmitter to heat the power battery; or, in response to the third comparison result indicating that the power battery temperature is greater than the preset battery starting temperature, starting the electric heating device to heat the battery coolant.

[0074] Optionally, according to the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to a first comparison result showing that the power battery state of charge is greater than a first preset state of charge, comparing the power battery state of charge with a second preset state of charge to obtain a fourth comparison result; in response to the fourth comparison result showing that the power battery state of charge is less than or equal to the second preset state of charge, comparing the power battery coolant temperature with a preset battery operating temperature to obtain a fifth comparison result; in response to the fifth comparison result showing that the power battery coolant temperature is less than or equal to the preset battery operating temperature, starting an electric heating device to heat the coolant.

[0075] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the fifth comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, comparing the power battery temperature with the preset battery starting temperature to obtain a fifth comparison result; in response to the fifth comparison result indicating that the battery temperature is less than or equal to the preset battery starting temperature, starting the electric heating device to heat the power battery; or, in response to the fifth comparison result indicating that the battery temperature is greater than the preset battery starting temperature, starting the battery cooling cycle to cool the power battery.

[0076] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to a fourth comparison result indicating that the power battery state of charge is greater than a second preset state of charge, comparing the battery coolant temperature with the drive motor temperature to obtain a sixth comparison result; in response to the sixth comparison result indicating that the battery coolant temperature is less than or equal to the drive motor temperature, controlling the drive motor to heat the power battery; or, in response to the sixth comparison result indicating that the battery coolant temperature is greater than the drive motor temperature, controlling the drive motor cooling cycle and the power battery cooling cycle to start.

[0077] An embodiment of the present invention further provides a non-volatile storage medium, in which a computer program is stored, wherein the computer program is configured to execute the power system thermal management method in any of the above embodiments when running.

[0078] Optionally, in this embodiment, the above-mentioned computer program may be configured to store a computer program for performing the following steps:

[0079] Step S101, obtaining the ambient temperature.

[0080] Step S102, comparing the ambient temperature with a preset battery startup temperature to obtain a temperature comparison result.

[0081] Step S103: controlling the power system to adjust the temperature of the power battery according to the temperature comparison result.

[0082] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the temperature comparison result indicating that the ambient temperature is less than or equal to the preset battery starting temperature, starting the electric heating device to heat the battery coolant and monitoring the battery coolant temperature; in response to the battery coolant temperature being less than the preset battery operating temperature, continuously heating the battery coolant until the battery coolant temperature is equal to the preset battery operating temperature; or, in response to the battery coolant temperature being greater than or equal to the preset battery operating temperature, controlling the electric heating device to heat the power battery.

[0083] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the temperature comparison result indicating that the ambient temperature is greater than the preset battery starting temperature, comparing the power battery state of charge with a first preset state of charge to obtain a first comparison result; in response to the first comparison result indicating that the power battery state of charge is less than or equal to the first preset state of charge, comparing the battery coolant temperature with a preset battery operating temperature to obtain a second comparison result; in response to the second comparison result indicating that the battery coolant temperature is less than or equal to the preset battery operating temperature, starting the electric heating device to heat the battery coolant.

[0084] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the second comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, comparing the power battery temperature with the preset battery starting temperature to obtain a third comparison result; in response to the third comparison result indicating that the power battery temperature is less than or equal to the preset battery starting temperature, controlling the transmitter to heat the power battery; or, in response to the third comparison result indicating that the power battery temperature is greater than the preset battery starting temperature, starting the electric heating device to heat the battery coolant.

[0085] Optionally, according to the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to a first comparison result showing that the power battery state of charge is greater than a first preset state of charge, comparing the power battery state of charge with a second preset state of charge to obtain a fourth comparison result; in response to the fourth comparison result showing that the power battery state of charge is less than or equal to the second preset state of charge, comparing the power battery coolant temperature with a preset battery operating temperature to obtain a fifth comparison result; in response to the fifth comparison result showing that the power battery coolant temperature is less than or equal to the preset battery operating temperature, starting an electric heating device to heat the coolant.

[0086] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the fifth comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, comparing the power battery temperature with the preset battery starting temperature to obtain a fifth comparison result; in response to the fifth comparison result indicating that the battery temperature is less than or equal to the preset battery starting temperature, starting the electric heating device to heat the power battery; or, in response to the fifth comparison result indicating that the battery temperature is greater than the preset battery starting temperature, starting the battery cooling cycle to cool the power battery.

[0087] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to a fourth comparison result indicating that the power battery state of charge is greater than a second preset state of charge, comparing the battery coolant temperature with the drive motor temperature to obtain a sixth comparison result; in response to the sixth comparison result indicating that the battery coolant temperature is less than or equal to the drive motor temperature, controlling the drive motor to heat the power battery; or, in response to the sixth comparison result indicating that the battery coolant temperature is greater than the drive motor temperature, controlling the drive motor cooling cycle and the power battery cooling cycle to start.

[0088] An embodiment of the present invention further provides a computer program product, including a computer program, which implements the power system thermal management method described in any of the above embodiments when executed by a processor.

[0089] Optionally, in this embodiment, the above computer program implements the following steps when executed by a processor:

[0090] Step S101, obtaining the ambient temperature.

[0091] Step S102, comparing the ambient temperature with a preset battery startup temperature to obtain a temperature comparison result.

[0092] Step S103: controlling the power system to adjust the temperature of the power battery according to the temperature comparison result.

[0093] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the temperature comparison result indicating that the ambient temperature is less than or equal to the preset battery starting temperature, starting the electric heating device to heat the battery coolant and monitoring the battery coolant temperature; in response to the battery coolant temperature being less than the preset battery operating temperature, continuously heating the battery coolant until the battery coolant temperature is equal to the preset battery operating temperature; or, in response to the battery coolant temperature being greater than or equal to the preset battery operating temperature, controlling the electric heating device to heat the power battery.

[0094] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the temperature comparison result indicating that the ambient temperature is greater than the preset battery starting temperature, comparing the power battery state of charge with a first preset state of charge to obtain a first comparison result; in response to the first comparison result indicating that the power battery state of charge is less than or equal to the first preset state of charge, comparing the battery coolant temperature with a preset battery operating temperature to obtain a second comparison result; in response to the second comparison result indicating that the battery coolant temperature is less than or equal to the preset battery operating temperature, starting the electric heating device to heat the battery coolant.

[0095] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the second comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, comparing the power battery temperature with the preset battery starting temperature to obtain a third comparison result; in response to the third comparison result indicating that the power battery temperature is less than or equal to the preset battery starting temperature, controlling the transmitter to heat the power battery; or, in response to the third comparison result indicating that the power battery temperature is greater than the preset battery starting temperature, starting the electric heating device to heat the battery coolant.

[0096] Optionally, according to the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to a first comparison result showing that the power battery state of charge is greater than a first preset state of charge, comparing the power battery state of charge with a second preset state of charge to obtain a fourth comparison result; in response to the fourth comparison result showing that the power battery state of charge is less than or equal to the second preset state of charge, comparing the power battery coolant temperature with a preset battery operating temperature to obtain a fifth comparison result; in response to the fifth comparison result showing that the power battery coolant temperature is less than or equal to the preset battery operating temperature, starting an electric heating device to heat the coolant.

[0097] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to the fifth comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, comparing the power battery temperature with the preset battery starting temperature to obtain a fifth comparison result; in response to the fifth comparison result indicating that the battery temperature is less than or equal to the preset battery starting temperature, starting the electric heating device to heat the power battery; or, in response to the fifth comparison result indicating that the battery temperature is greater than the preset battery starting temperature, starting the battery cooling cycle to cool the power battery.

[0098] Optionally, based on the temperature comparison result, the power system is controlled to adjust the temperature of the power battery, including: in response to a fourth comparison result indicating that the power battery state of charge is greater than a second preset state of charge, comparing the battery coolant temperature with the drive motor temperature to obtain a sixth comparison result; in response to the sixth comparison result indicating that the battery coolant temperature is less than or equal to the drive motor temperature, controlling the drive motor to heat the power battery; or, in response to the sixth comparison result indicating that the battery coolant temperature is greater than the drive motor temperature, controlling the drive motor cooling cycle and the power battery cooling cycle to start.

[0099] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation modes, and this embodiment will not be described in detail here.

[0100] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0101] In some embodiments provided in the present application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0102] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed over multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0103] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0104] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server or grid device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk, etc., which can store program code.

[0105] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A power system heat management method, applied to a vehicle, characterized in that: The method comprises: Get the ambient temperature; Comparing the ambient temperature with a preset battery startup temperature to obtain a temperature comparison result; According to the temperature comparison result, the power system is controlled to adjust the temperature of the power battery.

2. The power system thermal management method according to claim 1, characterized in that: The controlling the power system to adjust the power battery temperature according to the temperature comparison result includes: In response to the temperature comparison result indicating that the ambient temperature is less than or equal to a preset battery starting temperature, starting the electric heating device to heat the battery coolant and monitor the battery coolant temperature; In response to the battery coolant temperature being lower than a preset battery operating temperature, continuously heating the battery coolant until the battery coolant temperature is equal to the preset battery operating temperature; or, In response to the battery coolant temperature being greater than or equal to the preset battery operating temperature, the electric heating device is controlled to heat the power battery.

3. The power system thermal management method according to claim 1, characterized in that: The controlling the power system to adjust the power battery temperature according to the temperature comparison result includes: In response to the temperature comparison result indicating that the ambient temperature is greater than a preset battery starting temperature, comparing the power battery state of charge with a first preset state of charge to obtain a first comparison result; In response to the first comparison result indicating that the state of charge of the power battery is less than or equal to a first preset state of charge, comparing the battery coolant temperature with a preset battery operating temperature to obtain a second comparison result; In response to the second comparison result indicating that the battery coolant temperature is less than or equal to the preset battery operating temperature, the electric heating device is started to heat the battery coolant.

4. The power system thermal management method according to claim 3, characterized in that: The controlling the power system to adjust the power battery temperature according to the temperature comparison result includes: In response to the second comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, comparing the power battery temperature with the preset battery starting temperature to obtain a third comparison result; In response to the third comparison result indicating that the power battery temperature is less than or equal to the preset battery starting temperature, controlling the transmitter to heat the power battery; or, In response to the third comparison result indicating that the power battery temperature is greater than the preset battery starting temperature, the electric heating device is started to heat the battery coolant.

5. The power system thermal management method according to claim 3, characterized in that: The controlling the power system to adjust the power battery temperature according to the temperature comparison result includes: In response to the first comparison result indicating that the power battery state of charge is greater than the first preset state of charge, comparing the power battery state of charge with a second preset state of charge to obtain a fourth comparison result; In response to the fourth comparison result indicating that the power battery state of charge is less than or equal to a second preset state of charge, comparing the power battery coolant temperature with the preset battery operating temperature to obtain a fifth comparison result; In response to the fifth comparison result indicating that the power battery coolant temperature is less than or equal to the preset battery operating temperature, the electric heating device is started to heat the coolant.

6. The power system thermal management method according to claim 5, characterized in that: The controlling the power system to adjust the power battery temperature according to the temperature comparison result includes: In response to the fifth comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, comparing the power battery temperature with the preset battery starting temperature to obtain a fifth comparison result; In response to the fifth comparison result indicating that the battery temperature is less than or equal to the preset battery start-up temperature, starting the electric heating device to heat the power battery; or, In response to the fifth comparison result indicating that the battery temperature is greater than the preset battery starting temperature, a battery cooling cycle is started to cool the power battery.

7. The power system thermal management method according to claim 5, characterized in that: The controlling the power system to adjust the power battery temperature according to the temperature comparison result includes: In response to the fourth comparison result indicating that the state of charge of the power battery is greater than the second preset state of charge, comparing the battery coolant temperature with the drive motor temperature to obtain a sixth comparison result; In response to the sixth comparison result indicating that the battery coolant temperature is less than or equal to the drive motor temperature, controlling the drive motor to heat the power battery; or, In response to the sixth comparison result indicating that the battery coolant temperature is greater than the drive motor temperature, the drive motor cooling cycle and the power battery cooling cycle are controlled to be turned on.

8. A power system, applied to a vehicle, characterized in that: include: A power battery, wherein the power battery is connected to a coolant storage tank via a power battery water pump, the coolant storage tank is connected to a thermistor heater via a heating system water pump, the thermistor heater is connected to a thermostat, and the thermostat is connected to the coolant storage tank; A drive motor is connected to the coolant storage tank via a drive motor water pump, the drive motor is connected to a condenser, the condenser is connected to an evaporator via an expansion valve, two ends of the compressor are connected to the condenser and the evaporator respectively, and the condenser and the evaporator are connected to a condenser fan and an evaporator fan respectively.

9. A power system thermal management system, applied to a vehicle, characterized in that: include: An acquisition module is used to obtain the ambient temperature; A comparison module, used to compare the ambient temperature with a preset battery startup temperature to obtain a temperature comparison result; The control module is used to control the power system to adjust the temperature of the power battery according to the temperature comparison result.

10. A vehicle comprising a memory and a processor, characterized in that: The memory stores a computer program, and the processor is configured to run the computer program to execute the power system thermal management method as described in any one of claims 1 to 7.

11. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein the computer program is configured to execute the power system thermal management method described in any one of claims 1 to 7 when running on a computer or a processor.

12. A computer program product, characterized in that The invention comprises a computer program, which, when executed by a processor, implements the power system thermal management method according to any one of claims 1 to 7.

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