Powertrain thermal management methods, systems, vehicles and storage media

Abstract

This invention discloses a power system thermal management method, system, vehicle, and storage medium. The power system thermal management method includes: acquiring the ambient temperature; comparing the ambient temperature with a preset battery start-up temperature to obtain a temperature comparison result; and controlling the power system to adjust the power battery temperature based on the temperature comparison result. This invention solves the technical problem in related technologies where power battery temperature management methods cannot address low-temperature start-up.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more specifically, to a powertrain thermal management method, system, vehicle, and storage medium. Background Technology

[0002] The thermal management method for pure electric vehicles involves managing heat transfer between the electric drive and battery components, using preheating or cooling methods for heat management and utilization. The proportion of pure electric vehicles sold in the market as a percentage of new energy vehicle sales is increasing year by year. Charging stations are gradually becoming widespread in major urban areas, highway service stations, and residential areas. As an energy-efficient, lightweight, and environmentally friendly new vehicle type, pure electric vehicles are rapidly becoming the preferred choice for family travel in central and southern my country.

[0003] Then, when the ambient temperature is low, the battery performance of pure electric vehicles drops rapidly, the power consumption is large, the travel range is shortened, and low temperature start-up becomes a problem for travel. 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] This invention provides a power system thermal management method, system, vehicle, and storage medium to at least solve the technical problem that the temperature management method for power batteries cannot solve the problem of low-temperature start-up in related technologies.

[0005] According to one embodiment of the present invention, a power system thermal management method is provided, applied to a vehicle, comprising: acquiring an ambient temperature; comparing the ambient temperature with a preset battery start-up 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 results, the power system is controlled to adjust the power battery temperature, including: in response to the temperature comparison results indicating that the ambient temperature is less than or equal to the preset battery start-up 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 equals 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 power battery temperature, including: in response to the temperature comparison result indicating that the ambient temperature is greater than the preset battery start-up 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, activating an electric heating device to heat the battery coolant.

[0008] Optionally, based on the temperature comparison result, the power system is controlled to adjust the power battery temperature, including: in response to the second comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, the power battery temperature is compared with the preset battery start-up 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 start-up temperature, the transmitter is controlled 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 start-up temperature, an electric heating device is activated to heat the battery coolant.

[0009] Optionally, based on the temperature comparison results, the power system is controlled to adjust the power battery temperature, including: in response to a first comparison result indicating 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 a fourth comparison result indicating 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 a fifth comparison result indicating that the power battery coolant temperature is less than or equal to the preset battery operating temperature, activating an electric heating device to heat the coolant.

[0010] Optionally, based on the temperature comparison result, the power system is controlled to adjust the power battery temperature, including: in response to the fifth comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, the power battery temperature is compared with the preset battery start-up temperature to obtain the 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, an electric heating device is activated to heat the power battery; or, in response to the fifth comparison result indicating that the battery temperature is greater than the preset battery start-up temperature, a battery cooling cycle is activated to cool the power battery.

[0011] Optionally, based on the temperature comparison results, the power system is controlled to adjust the power battery temperature, including: in response to the fourth comparison result indicating that the power battery state of charge 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, controlling the drive motor cooling cycle and the power battery cooling cycle to start.

[0012] According to one embodiment of the present invention, a power system for use in a vehicle is also provided, comprising: a power battery, the power battery being connected to a coolant reservoir via a power battery water pump, the coolant reservoir being connected to a thermistor heater via a heating system water pump, the thermistor heater being connected to a thermostat, and the thermostat being connected to the coolant reservoir; a drive motor, the drive motor being connected to the coolant reservoir via a drive motor water pump, the drive motor being connected to a condenser, the condenser being connected to an evaporator via an expansion valve, and a compressor having its two ends connected to the condenser and the evaporator respectively, and the condenser and the evaporator being 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, comprising: an acquisition module for acquiring ambient temperature; a comparison module for comparing the ambient temperature with a preset battery start-up 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 configured to: in response to a temperature comparison result indicating that the ambient temperature is less than or equal to the preset battery start-up temperature, activate the electric heating device to heat the battery coolant and monitor the battery coolant temperature; in response to a battery coolant temperature being less than the preset battery operating temperature, continuously heat the battery coolant until the battery coolant temperature equals the preset battery operating temperature; or, in response to a 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 further configured to: in response to a temperature comparison result indicating that the ambient temperature is greater than the preset battery start-up temperature, compare the state of charge of the power battery with a first preset state of charge to obtain a first comparison result; in response to a first comparison result indicating that the state of charge of the power battery 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; and in response to a second comparison result indicating that the battery coolant temperature is less than or equal to the preset battery operating temperature, activate the electric heating device to heat the battery coolant.

[0016] Optionally, the control module is further configured to: in response to a 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 start-up temperature to obtain a third comparison result; in response to a third comparison result indicating that the power battery temperature is less than or equal to the preset battery start-up temperature, control the transmitter to heat the power battery; or, in response to a third comparison result indicating that the power battery temperature is greater than the preset battery start-up temperature, activate the electric heating device to heat the battery coolant.

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

[0018] Optionally, the control module is further configured 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 start-up temperature to obtain the 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, 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 start-up temperature, start the battery cooling cycle to cool the power battery.

[0019] Optionally, the control module is further configured to: in response to a fourth comparison result indicating that the state of charge of the power battery 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 a 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 a sixth comparison result indicating that the battery coolant temperature is greater than the drive motor temperature, control the start of the drive motor cooling cycle and the power battery cooling cycle.

[0020] According to one embodiment of the present invention, a vehicle is also provided, including a memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to perform the power system thermal management method of any of the above claims.

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

[0022] According to one embodiment of the present invention, a computer program product is also provided, including a computer program that, when executed by a processor, implements the power system thermal management method described above.

[0023] In this embodiment of the invention, the ambient temperature is acquired; the ambient temperature is compared with a preset battery start-up temperature to obtain a temperature comparison result; based on the temperature comparison result, the power system is controlled to adjust the power battery temperature. This invention, when the ambient temperature is low, can adjust the power battery temperature by controlling the power system, thereby solving the technical problem that related technologies' power battery temperature management methods cannot address low-temperature start-up. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

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

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

[0027] Figure 3 This is a flowchart illustrating a power system thermal management method according to one embodiment of the present invention;

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

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort 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, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[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 in the accompanying drawings can be executed in a computer system containing at least a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0032] This method embodiment can also be executed in an electronic device, similar control device, or vehicle-mounted terminal that includes a memory and a processor. 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 for communication functions and a display device. Those skilled in the art will understand that the above structural description is merely illustrative and does not limit the structure of the vehicle-mounted terminal. For example, the vehicle-mounted terminal may include more or fewer components than those described above, or have a different configuration than those described above.

[0033] A processor may include one or more processing units. For example, a 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), or an artificial intelligence (AI) type processor. Different processing units may be independent components or integrated into one or more processors. In some instances, electronic devices may also include one or more processors.

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

[0035] The communication device is used to receive or transmit data via a grid. Specific examples of the aforementioned grid may include a wireless grid provided by the mobile terminal's communication provider. In one example, the communication device includes a network interface controller (NIC), which can connect to other grid devices via a base station to communicate with the Internet. In another example, the communication device may be a radio frequency (RF) module used for wireless communication with the Internet. In some embodiments of this solution, the communication device is used to connect to mobile devices such as mobile phones and tablets, enabling the mobile device to send commands to the vehicle-mounted terminal.

[0036] The display device can be a touchscreen liquid crystal display (LCD) or a touch display (also referred to as a "touchscreen" or "touch display screen"). This LCD allows the user to interact with the user interface of the in-vehicle terminal. In some embodiments, the in-vehicle terminal has a graphical user interface (GUI), allowing the user to interact with the GUI through finger contact and / or gestures on a touch-sensitive surface. The human-machine interaction function may include a vehicle gear shifting function, and executable instructions for performing these functions are configured / stored in one or more processor-executable computer program products or readable storage media.

[0037] Figure 1 This is a flowchart of a power system thermal management method according to one embodiment of the present invention, such as... Figure 1 As shown, the method includes the following steps:

[0038] Step S101: Obtain the ambient temperature.

[0039] Step S102: Compare the ambient temperature with the preset battery startup temperature to obtain the temperature comparison result.

[0040] Step S103: Based on the temperature comparison results, control the power system to adjust the temperature of the power battery.

[0041] In this embodiment of the invention, the ambient temperature is acquired; the ambient temperature is compared with a preset battery start-up temperature to obtain a temperature comparison result; based on the temperature comparison result, the power system is controlled to adjust the power battery temperature. This invention, when the ambient temperature is low, can adjust the power battery temperature by controlling the power system, thereby solving the technical problem that related technologies' power battery temperature management methods cannot address low-temperature start-up.

[0042] Optionally, based on the temperature comparison results, the power system is controlled to adjust the power battery temperature, including: in response to the temperature comparison results indicating that the ambient temperature is less than or equal to the preset battery start-up 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 equals 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 power battery temperature, including: in response to the temperature comparison result indicating that the ambient temperature is greater than the preset battery start-up 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, activating an electric heating device to heat the battery coolant.

[0044] Optionally, based on the temperature comparison result, the power system is controlled to adjust the power battery temperature, including: in response to the second comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, the power battery temperature is compared with the preset battery start-up 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 start-up temperature, the transmitter is controlled 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 start-up temperature, an electric heating device is activated to heat the battery coolant.

[0045] Optionally, based on the temperature comparison results, the power system is controlled to adjust the power battery temperature, including: in response to a first comparison result indicating 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 a fourth comparison result indicating 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 a fifth comparison result indicating that the power battery coolant temperature is less than or equal to the preset battery operating temperature, activating an electric heating device to heat the coolant.

[0046] Optionally, based on the temperature comparison result, the power system is controlled to adjust the power battery temperature, including: in response to the fifth comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, the power battery temperature is compared with the preset battery start-up temperature to obtain the 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, an electric heating device is activated to heat the power battery; or, in response to the fifth comparison result indicating that the battery temperature is greater than the preset battery start-up temperature, a battery cooling cycle is activated to cool the power battery.

[0047] Optionally, based on the temperature comparison results, the power system is controlled to adjust the power battery temperature, including: in response to the fourth comparison result indicating that the power battery state of charge 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, controlling the drive motor cooling cycle and the power battery cooling cycle to start.

[0048] Figure 2 This is a schematic diagram of the power system architecture according to one embodiment of the present invention, such as... Figure 2 As shown, the present invention also provides a power system, comprising: a power battery, the power battery being connected to a coolant storage tank via a power battery water pump, the coolant storage tank being connected to a thermistor heater via a heating system water pump, the thermistor heater being connected to a thermostat, and the thermostat being connected to the coolant storage tank; a drive motor, the drive motor being connected to the coolant storage tank via a drive motor water pump, the drive motor being connected to a condenser, the condenser being connected to an evaporator via an expansion valve, the compressor having its two ends connected to the condenser and the evaporator respectively, and the condenser and the evaporator being respectively connected to a condenser fan and an evaporator fan.

[0049] Reference Figure 3 The above embodiments are 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 diagram constitute the electric drive and power battery heating system. Its main working principle is as follows: When the battery temperature is lower than the suitable operating 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, heating the battery coolant and raising the battery temperature through heat exchange. When the coolant temperature is insufficient to raise the battery temperature, the passage between the cooling system of drive motor 5 and the cooling system of power battery 4 is opened, and drive motor water pump 12-3 is turned on, allowing the hotter electric drive coolant to flow into the battery water jacket to replenish the battery's heat. In actual operation, the heating method can be selected based on the vehicle's geographical location. When the ambient temperature is low, electric heating can be used first. When the heat is insufficient to reach the battery's suitable operating temperature, PTC can be activated to supplement the heat. This method prioritizes electric heating to save 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 cooling fluid circulation for heat exchange, resulting in faster heat transfer and a shorter battery start-up time. Therefore, PTC heating should be the preferred solution in this case, with electric heating 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 the cooling system between the electric drive and the power battery. Its main principle is as follows: when the battery temperature is high, the power battery water pump 12-2 needs to be turned on for cooling, and at the same time, the evaporator fan 11-2 is turned on for air cooling. When the drive motor water pump 12-3 is turned off, the evaporator fan 11-2 is used for air cooling. Meanwhile, the condenser 6, expansion valve 7, evaporator 8, passenger compartment 9, and compressor 10 constitute the passenger compartment air conditioning cooling system. The condenser 6 is used to cool multiple components to achieve efficient heat dissipation.

[0052] Reference Figure 3 For example, this method is implemented as follows:

[0053] The system acquires the ambient temperature. When the ambient temperature is less than or equal to the preset battery start-up temperature, it activates the PTC thermistor heater to heat the battery coolant and continuously monitors the coolant temperature. When the coolant temperature is less than or equal to the battery's optimal temperature (i.e., the preset battery operating temperature), it controls the PTC thermistor heater to continuously heat the coolant until the coolant temperature equals the battery's optimal temperature. If the coolant temperature is greater than the battery's optimal temperature, it controls the PTC thermistor heater to heat the power battery.

[0054] When the ambient temperature is higher than the battery starting temperature, it is determined whether the state of charge (SOC) of the power battery is less than or equal to 35% (first preset SOC). When the SOC of the power battery is less than or equal to 35%, it is determined whether the coolant temperature is less than or equal to the battery's suitable temperature. If the coolant temperature is less than or equal to the battery's suitable temperature, the PTC thermistor heater is controlled to heat the battery coolant. If the coolant temperature is higher than the battery's suitable temperature, it is further determined 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, the engine is controlled to preheat the power battery. If the power battery temperature is higher than the battery starting temperature, the PTC thermistor heater is controlled 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% (second preset state of charge), it is determined whether the coolant temperature is less than or equal to the battery's suitable temperature. If the coolant temperature is less than or equal to the battery's suitable temperature, the PTC thermistor heater is controlled to heat the coolant. If the coolant temperature is greater than the battery's suitable temperature, it is further determined whether the battery temperature is less than or equal to the battery's starting temperature. If the battery temperature is less than or equal to the battery's starting temperature, the PTC thermistor heater is controlled to heat the battery. If the battery temperature is greater than the battery's starting temperature, the battery cooling cycle is controlled to start and cool the battery.

[0056] When the state of charge of the power battery is greater than 55%, it is determined 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, the drive motor is controlled to heat the power battery. If the coolant temperature is greater than the motor temperature, the motor cooling cycle and battery cooling cycle are controlled to open.

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

[0058] This embodiment also provides a power system thermal management system, which is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

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

[0060] Optionally, the control module 203 is further configured to: in response to a temperature comparison result indicating that the ambient temperature is less than or equal to the preset battery start-up temperature, activate the electric heating device to heat the battery coolant and monitor the battery coolant temperature; in response to a battery coolant temperature being less than the preset battery operating temperature, continuously heat the battery coolant until the battery coolant temperature equals the preset battery operating temperature; or, in response to a 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 further configured to: in response to a temperature comparison result indicating that the ambient temperature is greater than the preset battery start-up temperature, compare the state of charge of the power battery with a first preset state of charge to obtain a first comparison result; in response to a first comparison result indicating that the state of charge of the power battery 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; and in response to a second comparison result indicating that the battery coolant temperature is less than or equal to the preset battery operating temperature, activate the electric heating device to heat the battery coolant.

[0062] Optionally, the control module 203 is further configured to: in response to a 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 start-up temperature to obtain a third comparison result; in response to a third comparison result indicating that the power battery temperature is less than or equal to the preset battery start-up temperature, control the transmitter to heat the power battery; or, in response to a third comparison result indicating that the power battery temperature is greater than the preset battery start-up temperature, activate the electric heating device to heat the battery coolant.

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

[0064] Optionally, the control module 203 is further configured 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 start-up temperature to obtain the 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, 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 start-up temperature, start the battery cooling cycle to cool the power battery.

[0065] Optionally, the control module 203 is further configured to: 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, 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] Embodiments of the present invention also provide a vehicle including a memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to perform the above-described powertrain thermal management method.

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

[0068] Step S101: Obtain the ambient temperature.

[0069] Step S102: Compare the ambient temperature with the preset battery startup temperature to obtain the temperature comparison result.

[0070] Step S103: Based on the temperature comparison results, control the power system to adjust the temperature of the power battery.

[0071] Optionally, based on the temperature comparison results, the power system is controlled to adjust the power battery temperature, including: in response to the temperature comparison results indicating that the ambient temperature is less than or equal to the preset battery start-up 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 equals 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 power battery temperature, including: in response to the temperature comparison result indicating that the ambient temperature is greater than the preset battery start-up 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, activating an electric heating device to heat the battery coolant.

[0073] Optionally, based on the temperature comparison result, the power system is controlled to adjust the power battery temperature, including: in response to the second comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, the power battery temperature is compared with the preset battery start-up 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 start-up temperature, the transmitter is controlled 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 start-up temperature, an electric heating device is activated to heat the battery coolant.

[0074] Optionally, based on the temperature comparison results, the power system is controlled to adjust the power battery temperature, including: in response to a first comparison result indicating 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 a fourth comparison result indicating 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 a fifth comparison result indicating that the power battery coolant temperature is less than or equal to the preset battery operating temperature, activating an electric heating device to heat the coolant.

[0075] Optionally, based on the temperature comparison result, the power system is controlled to adjust the power battery temperature, including: in response to the fifth comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, the power battery temperature is compared with the preset battery start-up temperature to obtain the 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, an electric heating device is activated to heat the power battery; or, in response to the fifth comparison result indicating that the battery temperature is greater than the preset battery start-up temperature, a battery cooling cycle is activated to cool the power battery.

[0076] Optionally, based on the temperature comparison results, the power system is controlled to adjust the power battery temperature, including: in response to the fourth comparison result indicating that the power battery state of charge 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, controlling the drive motor cooling cycle and the power battery cooling cycle to start.

[0077] Embodiments of the present invention also provide a non-volatile storage medium storing a computer program, wherein the computer program is configured to execute the power system thermal management method of any of the above embodiments when running.

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

[0079] Step S101: Obtain the ambient temperature.

[0080] Step S102: Compare the ambient temperature with the preset battery startup temperature to obtain the temperature comparison result.

[0081] Step S103: Based on the temperature comparison results, control the power system to adjust the temperature of the power battery.

[0082] Optionally, based on the temperature comparison results, the power system is controlled to adjust the power battery temperature, including: in response to the temperature comparison results indicating that the ambient temperature is less than or equal to the preset battery start-up 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 equals 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 power battery temperature, including: in response to the temperature comparison result indicating that the ambient temperature is greater than the preset battery start-up 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, activating an electric heating device to heat the battery coolant.

[0084] Optionally, based on the temperature comparison result, the power system is controlled to adjust the power battery temperature, including: in response to the second comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, the power battery temperature is compared with the preset battery start-up 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 start-up temperature, the transmitter is controlled 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 start-up temperature, an electric heating device is activated to heat the battery coolant.

[0085] Optionally, based on the temperature comparison results, the power system is controlled to adjust the power battery temperature, including: in response to a first comparison result indicating 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 a fourth comparison result indicating 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 a fifth comparison result indicating that the power battery coolant temperature is less than or equal to the preset battery operating temperature, activating an electric heating device to heat the coolant.

[0086] Optionally, based on the temperature comparison result, the power system is controlled to adjust the power battery temperature, including: in response to the fifth comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, the power battery temperature is compared with the preset battery start-up temperature to obtain the 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, an electric heating device is activated to heat the power battery; or, in response to the fifth comparison result indicating that the battery temperature is greater than the preset battery start-up temperature, a battery cooling cycle is activated to cool the power battery.

[0087] Optionally, based on the temperature comparison results, the power system is controlled to adjust the power battery temperature, including: in response to the fourth comparison result indicating that the power battery state of charge 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, controlling the drive motor cooling cycle and the power battery cooling cycle to start.

[0088] Embodiments of the present invention also provide a computer program product, including a computer program that, when executed by a processor, implements the power system thermal management method described in any of the above embodiments.

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

[0090] Step S101: Obtain the ambient temperature.

[0091] Step S102: Compare the ambient temperature with the preset battery startup temperature to obtain the temperature comparison result.

[0092] Step S103: Based on the temperature comparison results, control the power system to adjust the temperature of the power battery.

[0093] Optionally, based on the temperature comparison results, the power system is controlled to adjust the power battery temperature, including: in response to the temperature comparison results indicating that the ambient temperature is less than or equal to the preset battery start-up 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 equals 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 power battery temperature, including: in response to the temperature comparison result indicating that the ambient temperature is greater than the preset battery start-up 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, activating an electric heating device to heat the battery coolant.

[0095] Optionally, based on the temperature comparison result, the power system is controlled to adjust the power battery temperature, including: in response to the second comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, the power battery temperature is compared with the preset battery start-up 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 start-up temperature, the transmitter is controlled 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 start-up temperature, an electric heating device is activated to heat the battery coolant.

[0096] Optionally, based on the temperature comparison results, the power system is controlled to adjust the power battery temperature, including: in response to a first comparison result indicating 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 a fourth comparison result indicating 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 a fifth comparison result indicating that the power battery coolant temperature is less than or equal to the preset battery operating temperature, activating an electric heating device to heat the coolant.

[0097] Optionally, based on the temperature comparison result, the power system is controlled to adjust the power battery temperature, including: in response to the fifth comparison result indicating that the battery coolant temperature is greater than the preset battery operating temperature, the power battery temperature is compared with the preset battery start-up temperature to obtain the 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, an electric heating device is activated to heat the power battery; or, in response to the fifth comparison result indicating that the battery temperature is greater than the preset battery start-up temperature, a battery cooling cycle is activated to cool the power battery.

[0098] Optionally, based on the temperature comparison results, the power system is controlled to adjust the power battery temperature, including: in response to the fourth comparison result indicating that the power battery state of charge 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, controlling the drive motor cooling cycle and the power battery cooling cycle to start.

[0099] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated here.

[0100] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0101] In the embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between units or modules may be electrical or other forms.

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

[0103] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0104] If the integrated unit is implemented as 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 this 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. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or grid device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0105] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A powertrain thermal management method, applied to vehicles, characterized in that, The method includes: Obtain the ambient temperature; The ambient temperature is compared with the preset battery startup temperature to obtain the temperature comparison result; Based on the temperature comparison results, the power system is controlled to adjust the temperature of the power battery; The step of controlling the power system to adjust the power battery temperature based on the temperature comparison result includes: in response to the temperature comparison result indicating that the ambient temperature is greater than a preset battery start-up 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; and in response to the second comparison result indicating that the battery coolant temperature is less than or equal to the preset battery operating temperature, activating an electric heating device to heat the battery coolant. The step of controlling the power system to adjust the power battery temperature based on 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 start-up 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 start-up 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 start-up temperature, activating an electric heating device to heat the battery coolant.

2. The power system heat management method according to claim 1, characterized in that, The step of controlling the power system to adjust the power battery temperature based on the temperature comparison result includes: In response to the temperature comparison result indicating that the ambient temperature is less than or equal to the preset battery start-up temperature, the electric heating device is activated 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, the battery coolant is continuously heated until the battery coolant temperature equals 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 heat management method according to claim 1, characterized in that, The step of controlling the power system to adjust the power battery temperature based on the temperature comparison result includes: In response to the first comparison result indicating that the state of charge of the power battery is greater than the first preset state of charge, the state of charge of the power battery is compared with the second preset state of charge to obtain a fourth comparison result. In response to the fourth comparison result indicating that the state of charge of the power battery is less than or equal to the second preset state of charge, the power battery coolant temperature is compared with the preset battery operating temperature to obtain a fifth comparison result; In response to the fifth comparison result indicating that the temperature of the power battery coolant is less than or equal to the preset battery operating temperature, the electric heating device is activated to heat the coolant.

4. The power system heat management method according to claim 3, characterized in that, The step of controlling the power system to adjust the power battery temperature based on 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, the power battery temperature is compared with the preset battery start-up temperature to obtain the 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, the electric heating device is activated to heat the power battery; or, In response to the fifth comparison result indicating that the battery temperature is greater than the preset battery start-up temperature, a battery cooling cycle is initiated to cool the power battery.

5. The power system heat management method according to claim 3, characterized in that, The step of controlling the power system to adjust the power battery temperature based on 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, the battery coolant temperature is compared with the drive motor temperature to obtain the 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, the drive motor is controlled 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 activated.

6. A powertrain thermal management system, applied to a vehicle, characterized in that, include: The acquisition module is used to acquire the ambient temperature. The comparison module is used to compare the ambient temperature with the 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 based on the temperature comparison results. The control module is further configured to, in response to the temperature comparison result indicating that the ambient temperature is greater than the preset battery start-up temperature, compare the state of charge of the power battery 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 the first preset state of charge, compare the battery coolant temperature with a preset battery operating temperature to obtain a second comparison result; and in response to the second comparison result indicating that the battery coolant temperature is less than or equal to the preset battery operating temperature, activate the electric heating device to heat the battery coolant. The control module is further configured 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 start-up 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 start-up 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 start-up temperature, activate the electric heating device to heat the battery coolant.

7. 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 perform the power system thermal management method as described in any one of claims 1 to 5.

8. 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 according to any one of claims 1 to 5 when run on a computer or processor.

9. A computer program product, characterized in that, Includes a computer program that, when executed by a processor, implements the power system thermal management method according to any one of claims 1 to 5.

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