Integrated thermal management method and device of vehicle, vehicle and medium

Abstract

The invention relates to the technical field of vehicles, in particular to an integrated thermal management method and device of a vehicle, the vehicle and a medium. Judging whether the current battery meets a first preset heating condition or not according to the battery cell temperature of the current battery and the residual electric quantity of the current battery; and if the current battery meets the first preset heating condition, determining a heating strategy of the current battery according to the cell temperature of the current battery and the residual electric quantity of the current battery, and heating the current battery according to the heating strategy. Therefore, the motor heat management loop and the battery heat management loop are connected in series and jointly provide heat for the power battery, the problems that in the prior art, the price is high and the arrangement space is large due to the fact that PTC heating power is large are solved, efficient utilization of heat and electric energy of the whole vehicle is achieved, and the cruising ability and economical efficiency of the vehicle are effectively improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to an integrated thermal management method, device, vehicle, and medium for a vehicle. Background Art

[0002] As new energy vehicles develop toward higher energy density and longer driving range, the demand for temperature monitoring and control in power battery thermal management systems is increasing. These systems primarily consist of four components: the battery system, the motor system, the air conditioning system, and other components. The battery system is a crucial component, and its performance is directly affected by temperature. Therefore, precise control of the battery thermal management system is crucial.

[0003] The current mainstream thermal management solution is to manage the power battery and power system separately. Power battery heating typically uses a PTC (Positive Temperature Coefficient) heater, typically with a heating power of 4-8kW. However, increasing the PTC heating power not only increases the cost but also requires more space, increasing the complexity and cost of vehicle design, necessitating an urgent solution. Summary of the Invention

[0004] The present application provides an integrated thermal management method, device, vehicle and medium for a vehicle to solve the problems in the prior art of high price and large layout space caused by the high power of PTC heating, realizes the efficient utilization of heat and electric energy of the whole vehicle, and effectively improves the vehicle's endurance and economy.

[0005] A first embodiment of the present application provides an integrated thermal management method for a vehicle, comprising the following steps:

[0006] Obtaining the current battery cell temperature and the remaining power of the current battery;

[0007] determining whether the current battery meets a first preset heating condition according to the current battery cell temperature and the current battery remaining power;

[0008] If the current battery meets the first preset heating condition, a heating strategy for the current battery is determined according to the cell temperature of the current battery and the remaining power of the current battery, and the current battery is heated according to the heating strategy.

[0009] According to one embodiment of the present application, determining a heating strategy for the current battery according to the cell temperature of the current battery and the remaining power of the current battery, and heating the current battery according to the heating strategy, includes:

[0010] If the battery cell temperature is less than or equal to a first preset temperature, and the remaining power is greater than or equal to the first preset power, the current battery is heated based on a preset integrated preheating strategy.

[0011] According to one embodiment of the present application, the preset integrated preheating strategy includes:

[0012] Connect the power system circuit in series with the current battery circuit;

[0013] The heat generated by the power system circuit is used to heat the current battery in the current battery circuit.

[0014] According to one embodiment of the present application, determining a heating strategy for the current battery based on the cell temperature of the current battery and the remaining power of the current battery, and heating the current battery according to the heating strategy, further includes:

[0015] If the battery cell temperature is less than or equal to a second preset temperature, and the remaining power is less than the second preset power, the current battery is heated by using a PTC heating device.

[0016] According to one embodiment of the present application, the integrated thermal management method for a vehicle further includes:

[0017] Get the current ambient temperature;

[0018] If the current ambient temperature is less than or equal to a third preset temperature, and the current battery cell temperature is less than or equal to a fourth preset temperature, determining that the current battery meets a second preset heating condition;

[0019] Connect the power system circuit in series with the current battery circuit;

[0020] Control the power system to enter the heating mode, and use the heat generated by the power system to heat the current battery circuit to heat the current battery until the cell temperature of the current battery is greater than a fifth preset temperature, and control the power system to exit the heating mode.

[0021] According to the integrated thermal management method for a vehicle provided in an embodiment of the present application, when the current battery meets a first preset heating condition, a heating strategy for the current battery is determined based on the current battery cell temperature and the current remaining battery charge, and the current battery is heated according to the heating strategy. Thus, by connecting the motor thermal management circuit in series with the battery thermal management circuit to jointly provide heat for the power battery, the existing problems of high PTC heating power, resulting in high cost and large layout space, are resolved. This achieves efficient utilization of heat and electrical energy throughout the vehicle, effectively improving the vehicle's range and economy.

[0022] A second embodiment of the present application provides an integrated thermal management device for a vehicle, comprising:

[0023] An acquisition module is used to obtain the current battery cell temperature and the remaining power of the current battery;

[0024] a judging module, configured to judge whether the current battery satisfies a first preset heating condition according to the current battery cell temperature and the current battery remaining capacity;

[0025] A heating module is used to determine a heating strategy for the current battery according to the cell temperature of the current battery and the remaining power of the current battery if the current battery meets the first preset heating condition, and heat the current battery according to the heating strategy.

[0026] According to one embodiment of the present application, the heating module is used to:

[0027] If the battery cell temperature is less than or equal to a first preset temperature, and the remaining power is greater than or equal to the first preset power, the current battery is heated based on a preset integrated preheating strategy.

[0028] According to one embodiment of the present application, the heating module is used to:

[0029] Connect the power system circuit in series with the current battery circuit;

[0030] The heat generated by the power system circuit is used to heat the current battery in the current battery circuit.

[0031] According to one embodiment of the present application, the heating module is further used to:

[0032] If the battery cell temperature is less than or equal to a second preset temperature, and the remaining power is less than the second preset power, the current battery is heated by using a PTC heating device.

[0033] According to one embodiment of the present application, the integrated thermal management device of the vehicle is further used to:

[0034] Get the current ambient temperature;

[0035] If the current ambient temperature is less than or equal to a third preset temperature, and the current battery cell temperature is less than or equal to a fourth preset temperature, determining that the current battery meets a second preset heating condition;

[0036] Connect the power system circuit in series with the current battery circuit;

[0037] Control the power system to enter the heating mode, and use the heat generated by the power system to heat the current battery circuit to heat the current battery until the cell temperature of the current battery is greater than a fifth preset temperature, and control the power system to exit the heating mode.

[0038] According to the integrated thermal management device for a vehicle provided in an embodiment of the present application, when the current battery meets a first preset heating condition, a heating strategy for the current battery is determined based on the current battery cell temperature and the current remaining battery charge, and the current battery is heated according to the heating strategy. Thus, by connecting the motor thermal management circuit in series with the battery thermal management circuit to jointly provide heat for the power battery, the existing problems of high PTC heating power, resulting in high cost and large layout space, are resolved. This achieves efficient utilization of heat and electrical energy throughout the vehicle, effectively improving the vehicle's range and economy.

[0039] The third aspect of the present application provides a vehicle, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the integrated thermal management method for the vehicle as described in the above embodiment.

[0040] A fourth aspect of the present application provides a computer-readable storage medium, which stores computer instructions, and the computer instructions are used to enable the computer to execute the integrated thermal management method for a vehicle as described in the above embodiments.

[0041] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0043] Figure 1 This is a flow chart of an integrated thermal management method for a vehicle provided according to an embodiment of the present application;

[0044] Figure 2 This is a flow chart of preheating control before charging according to one embodiment of the present application;

[0045] Figure 3 This is a heating control flow chart for a low-temperature DC charging process according to one embodiment of the present application;

[0046] Figure 4 is a block diagram of an integrated thermal management device for a vehicle according to an embodiment of the present application;

[0047] Figure 5 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0049] Before introducing the integrated thermal management method for a vehicle according to an embodiment of the present application, the integrated thermal management system involved in the integrated thermal management method for a vehicle according to an embodiment of the present application will be first introduced.

[0050] Specifically, the first core component of the integrated thermal management system in the embodiment of the present application is the battery PTC, which heats the coolant through resistive heating, and the coolant then transfers the heat to the battery. The second core component is the motor and motor controller. When the vehicle is stationary, by continuously passing current through the motor stator, the rotor does not rotate, the motor does not output electromagnetic torque, and the stator acts as a heating winding to continuously generate heat to heat the motor coolant. The principle of integrated thermal management in the embodiment of the present application is to use two three-way valves to control the battery coolant circuit and the motor coolant circuit to achieve unified thermal management of two relatively independent systems.

[0051] Therefore, by using a three-way valve to control the thermal management power system circuit and the power battery circuit to be independent or integrated, when the power system circuit and the power battery circuit are connected in series, the power system heats the power battery circuit temperature and transfers the heat to the power battery through the coolant, thereby realizing integrated thermal management of the vehicle.

[0052] The following describes the integrated thermal management method, device, vehicle, and medium of the vehicle according to the embodiments of the present application with reference to the accompanying drawings. In response to the problems mentioned in the background art above, such as the high cost and large layout space caused by the high PTC heating power, the present application provides an integrated thermal management method for vehicles. From the perspective of comprehensive control of the vehicle's thermal management system, the motor thermal management circuit and the battery thermal management circuit are connected in series to jointly provide heat for the power battery, achieving efficient utilization of the vehicle's heat and electrical energy, and effectively improving the vehicle's endurance and economy.

[0053] The integrated thermal management method of the vehicle can be applied to an environment scenario capable of providing rapid heating for the power battery. For example, when the power battery has a charging demand, the battery is preheated by the thermal management of the system to enter an optimal charging temperature. When the vehicle is used in a low-temperature environment, the vehicle is started and the motor locked-rotor heating technology is adopted to take the resistance wire of the motor coil winding as a heat source, and the heat is transferred to the power battery through the cooling liquid to achieve the purpose of rapidly heating the battery and entering the normal working temperature.

[0054] Specifically, Figure 1 A flowchart of an integrated thermal management method of a vehicle provided by the embodiment of the present application is shown.

[0055] As Figure 1 shown, the integrated thermal management method of the vehicle includes the following steps:

[0056] In step S101, the cell temperature of the current battery and the remaining capacity of the current battery are obtained.

[0057] Specifically, the cell temperature of the current battery can be obtained by a temperature sensor, and the remaining capacity of the current battery can be obtained by a battery management system, which is not specifically limited here.

[0058] In step S102, it is determined whether the current battery meets a first preset heating condition according to the cell temperature of the current battery and the remaining capacity of the current battery.

[0059] In step S103, if the current battery meets the first preset heating condition, a heating strategy of the current battery is determined according to the cell temperature of the current battery and the remaining capacity of the current battery, and the current battery is heated according to the heating strategy.

[0060] Further, in some embodiments, the heating strategy of the current battery is determined according to the cell temperature of the current battery and the remaining capacity of the current battery, and the current battery is heated according to the heating strategy, including: if the cell temperature is less than or equal to a first preset temperature, and the remaining capacity is greater than or equal to a first preset capacity, the current battery is heated based on a preset integrated preheating strategy.

[0061] The first preset temperature can be a temperature preset by a person skilled in the art, such as 25℃, and the first preset capacity can be a capacity preset by a person skilled in the art, such as 10%, which is not specifically limited here.

[0062] Further, in some embodiments, the preset integrated preheating strategy includes: connecting the power system circuit and the current battery circuit in series; and heating the current battery in the current battery circuit by using the heat generated by the power system circuit.

[0063] Specifically, if the battery cell temperature is less than or equal to a first preset temperature and the remaining charge is greater than or equal to the first preset charge, the powertrain circuit and the current battery circuit are connected in series to effectively transfer heat generated by the powertrain circuit to the current battery circuit. The heat generated by the powertrain circuit is then used to heat the current battery in the current battery circuit. This integrated preheating strategy fully utilizes the heat generated by the powertrain, improving energy efficiency while quickly heating the current battery to the desired temperature, thereby enhancing battery performance and service life.

[0064] It is understandable that when charging in winter or when the battery temperature is low, the cell activity is low, the charge rate is small, and the charging speed is slow. Therefore, it is often necessary to turn on preheating in advance to heat the battery to the "cell comfort temperature" before charging to improve the battery charging performance. For example, when the remaining power of the power battery is ≥10% and the cell temperature is ≤25°C, the integrated charging preheating can be turned on, connecting the power system circuit and the power battery circuit in series, and the heat generated by the power system heating is transported to the power battery circuit to heat the battery pack.

[0065] Furthermore, in some embodiments, a heating strategy for the current battery is determined based on the battery cell temperature and the remaining power of the current battery, and the current battery is heated according to the heating strategy, and further includes: if the battery cell temperature is less than or equal to a second preset temperature, and the remaining power is less than the second preset power, the current battery is heated using a PTC heating device.

[0066] The second preset temperature may be a temperature preset by those skilled in the art, such as 25° C., and the second preset power may be a power preset by those skilled in the art, such as 10%, which are not specifically limited here.

[0067] It is understandable that since the motor stall heating efficiency is lower than PTC and the energy consumption is high, when the battery power is low, it is recommended to turn off the motor stall heating to reduce battery power consumption.

[0068] Therefore, in the embodiment of the present application, when the cell temperature of the current battery is less than or equal to the second preset temperature and the remaining power of the current battery is less than the second preset power, a PTC heating device is used to heat the current battery, which can provide stable heating power when the remaining power of the battery is insufficient, thereby ensuring the charging performance and working state of the battery in a low temperature environment.

[0069] For example, when the cell temperature is ≤25°C and the battery remaining capacity SOC is less than 10%, the integrated preheating is switched to PTC independent heating of the battery pack.

[0070] In order to facilitate those skilled in the art to more clearly and intuitively understand the preheating control process before charging in the embodiment of the present application, the following Figure 2 Provide detailed explanation.

[0071] like Figure 2 As shown, the preheating control process before charging includes the following steps:

[0072] First, determine whether the cell temperature is less than or equal to 25° C. If so, determine whether the remaining capacity (SOC) of the battery is greater than or equal to 10%. Otherwise, enter the step of not preheating and end.

[0073] Secondly, when the cell temperature is ≤25°C, if the battery SOC is ≥10%, the "integrated preheating" step is performed; if the battery SOC is <10%, the "PTC separate preheating" step is performed.

[0074] Furthermore, after the preheating step is completed, it is determined whether the cell temperature is greater than 25°C. If the cell temperature is greater than 25°C, the process proceeds to the "preheating end" step and ends; if the cell temperature is ≤25°C, the process returns to the battery SOC determination step and continues to execute the preheating strategy in a loop.

[0075] Furthermore, in some embodiments, the integrated thermal management method of a vehicle also includes: obtaining the current ambient temperature; if the current ambient temperature is less than or equal to the third preset temperature, and the current battery cell temperature is less than or equal to the fourth preset temperature, determining that the current battery meets the second preset heating condition; connecting the power system circuit and the current battery circuit in series; controlling the power system to enter a heating mode, and using the heat generated by the power system to heat the current battery circuit to heat the current battery, until the current battery cell temperature is greater than the fifth preset temperature, and controlling the power system to exit the heating mode.

[0076] Among them, the third preset temperature and the fourth preset temperature can be temperatures pre-set by those skilled in the art, among which the third preset temperature can be 10°C, the fourth preset temperature can be 25°C, and the fifth preset temperature can be 25°C, which are not specifically limited here.

[0077] Optionally, the embodiment of the present application can obtain the current ambient temperature through a temperature sensor, which is not specifically limited here.

[0078] Specifically, in an embodiment of the present invention, the temperature of the current environment is first obtained, and it is determined whether the current environment temperature is less than or equal to a preset third preset temperature, and at the same time it is determined whether the cell temperature of the current battery is less than or equal to a preset fourth preset temperature. If both conditions are met, it is determined that the current battery meets the second preset heating condition.

[0079] Furthermore, after confirming that the second preset heating condition is met, the power system circuit is connected in series with the current battery circuit so that heat generated by the power system can be transferred to the battery circuit. The power system is then controlled to enter a heating mode, using the heat generated by the power system in the heating mode to heat the current battery circuit until the cell temperature of the current battery exceeds a predetermined fifth preset temperature. When the cell temperature reaches or exceeds the fifth preset temperature, the power system is controlled to exit the heating mode, thereby completing the heating process for the current battery.

[0080] For example, when the ambient temperature is ≤10°C and the battery cell temperature is ≤25°C, the power battery is determined to require heating. The power system circuit and the power battery circuit are connected in series, and the power system heats the power battery circuit, driving the battery cell temperature up. During charging, as the battery cell temperature rises to the set temperature threshold, the power system stops heating and switches to independent cooling mode with the power battery circuit.

[0081] It should be noted that in the embodiment of the present application, the battery pack is heated by the joint heating of the motor stall and the motor controller. The maximum heating power is generally 3-6kW, and the maximum temperature of the motor stator can reach 95°C, which requires more precise motor vector control technology. The threshold value for the power system circuit to exit heating in the embodiment of the present application can be set as follows: ① The motor temperature reaches the motor protection temperature. ② The battery cell temperature reaches the battery cell protection temperature, which is generally 45-55°C, depending on the different battery cell materials, and is not specifically limited here. ③ The power system temperature reaches the power system protection temperature. ④ The remaining power SOC of the battery pack is ≥95%, and the motor stall heating stops. This is because the heat generation efficiency of the motor stall heating is lower than that of PTC. If the motor is heated during the entire stall process, it will result in high power consumption, thereby increasing the user's energy cost.

[0082] In order to facilitate those skilled in the art to more clearly and intuitively understand the low-temperature DC charging process heating control process of the embodiment of the present application, the following is combined with Figure 3 Provide detailed explanation.

[0083] like Figure 3 As shown, the low-temperature DC charging process heating control process includes the following steps:

[0084] First, check whether the ambient temperature is less than or equal to 10°C and the battery cell temperature is less than or equal to 25°C. If so, perform integrated heating; otherwise, enter the "no heating" step and end.

[0085] When integrated heating is in effect, the system further checks whether the battery's remaining capacity (SOC) is greater than or equal to 95%, whether the power system temperature has reached the power system protection temperature, or whether the motor temperature has reached the motor protection temperature. If any of these conditions are met, PTC heating is initiated; if none of these conditions are met, integrated heating continues.

[0086] During the PTC heating process, the cell temperature is continuously monitored. If the cell temperature is greater than 25°C, the heating process ends and the process enters the "End" node. If the cell temperature is less than or equal to 25°C, PTC heating continues until the cell temperature exceeds 25°C.

[0087] In addition, when the vehicle is driving, the power system motor will generate heat. At this time, the embodiment of the present application can also connect the motor circuit and the battery pack circuit in series to fully utilize the waste heat of the motor and quickly heat the power battery to the optimal operating temperature to achieve energy saving.

[0088] Exemplarily, the integrated thermal management of the embodiment of the present application during vehicle driving can refer to the following conditions: ① The ambient temperature is ≤20°C. If the ambient temperature is higher than 25°C, the effect of utilizing waste heat will not be significant. ② The temperature of the electric drive (including the motor body, OBC (On-Board Charger), and DCDC (DC-DC Converter)) is ≤50°C to prevent the electric drive from overheating and affecting the power performance. ③ The minimum temperature of the battery cell is ≤25°C. In addition, the water outlet temperature of the motor should be about 5°C higher than the minimum temperature of the battery. ④ The water inlet temperature of the battery is ≤50°C to prevent the battery pack from overheating due to continuous temperature rise of the battery cell.

[0089] Therefore, this application develops a control strategy for the main application scenario of motor stall heating. When the battery needs to be charged and the cell temperature is lower than 25°C, the charging performance is limited at this temperature. The battery preheating can be started in advance, and the motor stall and battery heater work together. The heating circuits are connected in series to provide heat for the battery pack together. During the battery charging process, the motor stall and battery heater can also be used in conjunction to increase the battery temperature rise rate and allow the battery to enter the optimal charging temperature range as soon as possible.

[0090] Furthermore, given that stalled-rotor motor heating technology isn't widely used in vehicle thermal management services and its actual operating time is limited, even if this technology reduces motor efficiency during auxiliary heating, the impact on vehicle range is minimal. This technology utilizes a highly integrated vehicle thermal management system to comprehensively consider multiple parameters, including battery remaining charge (SOC), cell temperature, battery coolant temperature, motor temperature, powertrain temperature, and ambient temperature, to achieve optimal utilization of heat and electrical energy throughout the vehicle. Therefore, from a vehicle perspective, this integrated thermal management strategy not only does not reduce vehicle range, but actually helps improve it.

[0091] According to the integrated thermal management method for vehicles proposed in the embodiments of this application, when the current battery meets the first preset heating condition, a heating strategy for the current battery is determined based on the current battery cell temperature and the current battery remaining charge, and the current battery is heated according to the heating strategy. Thus, through the integrated thermal management strategy, the PTC and power system heating are precisely controlled based on the cell temperature, the battery remaining charge (SOC), the motor temperature, the battery water temperature, and other factors. This solves the problem of high PTC heating power leading to high cost and large layout space in the prior art, achieves efficient utilization of heat and electrical energy throughout the vehicle, and effectively improves the vehicle's endurance and economy.

[0092] Next, an integrated thermal management device for a vehicle according to an embodiment of the present application will be described with reference to the accompanying drawings.

[0093] Figure 4 It is a block diagram of an integrated thermal management device for a vehicle according to an embodiment of the present application.

[0094] like Figure 4 As shown, the integrated thermal management device 10 of the vehicle includes: an acquisition module 100 , a judgment module 200 and a heating module 300 .

[0095] Among them, the acquisition module 100 is used to obtain the battery cell temperature of the current battery and the remaining power of the current battery; the judgment module 200 is used to judge whether the current battery meets the first preset heating condition based on the battery cell temperature of the current battery and the remaining power of the current battery; the heating module 300 is used to determine the heating strategy of the current battery according to the battery cell temperature of the current battery and the remaining power of the current battery if the current battery meets the first preset heating condition, and heat the current battery according to the heating strategy.

[0096] Furthermore, in some embodiments, the heating module 300 is configured to heat the current battery based on a preset integrated preheating strategy if the battery cell temperature is less than or equal to a first preset temperature and the remaining power is greater than or equal to the first preset power.

[0097] Furthermore, in some embodiments, the heating module 300 is configured to: connect the power system circuit and the current battery circuit in series; and heat the current battery in the current battery circuit using the heat generated by the power system circuit.

[0098] Furthermore, in some embodiments, the heating module 300 is further configured to: if the battery cell temperature is less than or equal to a second preset temperature, and the remaining power is less than the second preset power, heat the current battery using a PTC heating device.

[0099] Furthermore, in some embodiments, the vehicle's integrated thermal management device 10 is also used to: obtain the current ambient temperature; if the current ambient temperature is less than or equal to the third preset temperature, and the current battery cell temperature is less than or equal to the fourth preset temperature, determine that the current battery meets the second preset heating condition; connect the power system circuit and the current battery circuit in series; control the power system to enter the heating mode, and use the heat generated by the power system to heat the current battery circuit to heat the current battery, until the current battery cell temperature is greater than the fifth preset temperature, and control the power system to exit the heating mode.

[0100] It should be noted that the aforementioned explanation of the embodiment of the integrated thermal management method for a vehicle is also applicable to the integrated thermal management device for a vehicle in this embodiment, and will not be repeated here.

[0101] According to the integrated thermal management device for a vehicle proposed in an embodiment of the present application, when the current battery meets a first preset heating condition, a heating strategy for the current battery is determined based on the current battery cell temperature and the current remaining battery charge, and the current battery is heated according to the heating strategy. Thus, by connecting the motor thermal management circuit in series with the battery thermal management circuit to jointly provide heat for the power battery, the existing problems of high PTC heating power, resulting in high cost and large layout space, are resolved. This achieves efficient utilization of heat and electrical energy throughout the vehicle, effectively improving the vehicle's range and economy.

[0102] Figure 5 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application. The vehicle may include:

[0103] Memory 501 , processor 502 , and computer programs stored in the memory 501 and executable on the processor 502 .

[0104] When the processor 502 executes the program, the integrated thermal management method for the vehicle provided in the above embodiment is implemented.

[0105] Furthermore, the vehicle further comprises:

[0106] The communication interface 503 is used for communication between the memory 501 and the processor 502 .

[0107] The memory 501 is used to store computer programs that can be run on the processor 502 .

[0108] The memory 501 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0109] If the memory 501, processor 502, and communication interface 503 are implemented independently, the communication interface 503, memory 501, and processor 502 can be interconnected via a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0110] Optionally, in a specific implementation, if the memory 501, the processor 502 and the communication interface 503 are integrated on a chip, the memory 501, the processor 502 and the communication interface 503 can communicate with each other through an internal interface.

[0111] The processor 502 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0112] An embodiment of the present application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-mentioned integrated thermal management method for a vehicle.

[0113] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0114] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this application, "N" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0115] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0116] The logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device). For purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or N wires (electronic devices), a portable computer disk cartridge (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and a portable compact disc read-only memory (CDROM). Furthermore, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing it in another suitable manner if necessary, and then storing it in a computer memory.

[0117] It should be understood that various parts of the present application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiment, the N steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used to implement: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0118] Those skilled in the art will understand that all or part of the steps in the method of the above embodiment can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

[0119] In addition, the functional units in the various embodiments of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into a module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0120] The storage medium mentioned above may be a read-only memory, a magnetic disk, or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application. Persons skilled in the art may make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. An integrated thermal management method for a vehicle, characterized in that: The following steps are involved: Obtaining the current battery cell temperature and the remaining power of the current battery; determining whether the current battery meets a first preset heating condition according to the current battery cell temperature and the current battery remaining power; If the current battery meets the first preset heating condition, a heating strategy for the current battery is determined according to the cell temperature of the current battery and the remaining power of the current battery, and the current battery is heated according to the heating strategy.

2. The method according to claim 1, characterized in that The determining a heating strategy for the current battery according to the cell temperature of the current battery and the remaining power of the current battery, and heating the current battery according to the heating strategy, includes: If the battery cell temperature is less than or equal to a first preset temperature, and the remaining power is greater than or equal to the first preset power, the current battery is heated based on a preset integrated preheating strategy.

3. The method according to claim 2, characterized in that The preset integrated preheating strategy includes: Connect the power system circuit in series with the current battery circuit; The heat generated by the power system circuit is used to heat the current battery in the current battery circuit.

4. The method according to claim 1, wherein The determining a heating strategy for the current battery according to the cell temperature of the current battery and the remaining power of the current battery, and heating the current battery according to the heating strategy, further includes: If the battery cell temperature is less than or equal to a second preset temperature, and the remaining power is less than the second preset power, the current battery is heated by using a PTC heating device.

5. The method according to claim 1, wherein Also includes: Get the current ambient temperature; If the current ambient temperature is less than or equal to a third preset temperature, and the current battery cell temperature is less than or equal to a fourth preset temperature, determining that the current battery meets a second preset heating condition; Connect the power system circuit in series with the current battery circuit; Control the power system to enter the heating mode, and use the heat generated by the power system to heat the current battery circuit to heat the current battery until the cell temperature of the current battery is greater than a fifth preset temperature, and control the power system to exit the heating mode.

6. An integrated thermal management device for a vehicle, characterized in that: include: An acquisition module is used to obtain the current battery cell temperature and the remaining power of the current battery; a judgment module, configured to judge whether the current battery meets a first preset heating condition according to the current battery cell temperature and the current battery remaining capacity; A heating module is used to determine a heating strategy for the current battery according to the cell temperature of the current battery and the remaining power of the current battery if the current battery meets the first preset heating condition, and heat the current battery according to the heating strategy.

7. The device according to claim 6, characterized in that The heating module is used to: If the battery cell temperature is less than or equal to a first preset temperature, and the remaining power is greater than or equal to the first preset power, the current battery is heated based on a preset integrated preheating strategy.

8. The device according to claim 6, characterized in that The heating module is used to: Connect the power system circuit in series with the current battery circuit; The heat generated by the power system circuit is used to heat the current battery in the current battery circuit.

9. A vehicle, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the integrated thermal management method for a vehicle according to any one of claims 1 to 5.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The computer program is executed by a processor to implement the integrated thermal management method for a vehicle according to any one of claims 1 to 5.

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