Hybrid vehicle thermal management control method, device, equipment, medium and vehicle

Abstract

The embodiment of the application provides a kind of hybrid vehicle heat management control method, device, equipment, medium and vehicle, it is related to heat management technical field.The hybrid vehicle includes engine, power battery and first electric drive unit, and the electric energy acquisition source of first electric drive unit includes by the engine by generator power generation obtains, the method comprises: in response to the low temperature start instruction of the hybrid vehicle, the oil temperature of the first electric drive unit is acquired;In the case where it is determined that the first electric drive unit is in preset low temperature state based on the oil temperature, the first electric drive unit is heated until the first electric drive unit exits low temperature state.The embodiment of the application adds the function of heating electric drive system, and first heats electric drive system when low temperature starts, so that electric drive system can quickly reach driving condition, and power is recovered quickly using engine to provide power generation, to improve the driving experience of low temperature start.

Description

Technical Field

[0001] This application relates to the field of thermal management technology, and more specifically, to a thermal management control method, device, equipment, medium, and vehicle for hybrid vehicles. Background Technology

[0002] The powertrain of a hybrid vehicle mainly consists of an engine, an electric drive system, and a battery. Compared to conventional vehicles, hybrid vehicles add a high-voltage system, enabling them to offer a variety of power modes. However, the battery's low-temperature performance deteriorates significantly, falling short of that of conventional vehicles. Since the battery's operating temperature range is much narrower than the engine's, a thermal management system is needed to heat the battery at low temperatures and dissipate heat at high temperatures. Furthermore, the increased viscosity of the fluid in the electric drive system at low temperatures makes it difficult to support normal vehicle operation. Therefore, to ensure the performance of hybrid vehicles, the power battery and electric drive system must be preheated to a suitable temperature before starting the vehicle in low-temperature environments.

[0003] Currently, existing thermal management solutions for hybrid vehicles do not consider preheating the electric drive system in low-temperature environments. This not only affects vehicle performance but may also damage the electric drive system. Furthermore, since heating the battery takes a long time, preheating the battery before starting the vehicle in low temperatures would require a lengthy warm-up period, impacting the driving experience when starting in cold conditions.

[0004] In summary, there is an urgent need for a solution that can shorten the preheating time for starting a vehicle in low temperatures. Summary of the Invention

[0005] The purpose of this application is to provide a thermal management control method, device, equipment, medium, and vehicle for hybrid vehicles, so as to shorten the preheating time for starting the vehicle in low temperatures.

[0006] In a first aspect, embodiments of this application provide a thermal management control method for a hybrid vehicle, the hybrid vehicle including an engine, a power battery, and a first electric drive unit, wherein the power source for the first electric drive unit includes power generated by the engine through a generator, and the method includes:

[0007] In response to the low-temperature start command of the hybrid vehicle, the oil temperature of the first electric drive unit is obtained;

[0008] If the first electric drive unit is determined to be in a preset low temperature state based on the oil temperature, the first electric drive unit is heated until the first electric drive unit exits the low temperature state.

[0009] In this embodiment, by adding a function to heat the electric drive system and heating the electric drive system before starting the car in low temperatures, the electric drive system can quickly reach the driving conditions and use the engine to generate electricity to quickly restore power, thereby improving the driving experience when starting the car in low temperatures.

[0010] In some possible embodiments, heating the first electric drive unit until it exits the low-temperature state, based on the oil temperature and determining that the first electric drive unit is in a preset low-temperature state, includes:

[0011] When the first electric drive unit is determined to be in a preset low temperature state based on the oil temperature, and the power battery is determined to be in a preset low temperature state based on the water temperature of the power battery, the first electric drive unit is heated until the first electric drive unit exits the low temperature state, and the power battery is heated.

[0012] In this embodiment, when both the power battery and the electric drive system are in a low-temperature state, heating resources are concentrated on heating the electric drive system first, and then limited heating resources are used to heat the power battery after the electric drive system exits the low-temperature state, thereby quickly restoring the vehicle's low-temperature starting power.

[0013] In some possible embodiments, the step of heating the first electric drive unit until it exits the low-temperature state, and heating the power battery when it is determined that the first electric drive unit is in a preset low-temperature state based on the oil temperature and the power battery is in a preset low-temperature state based on the water temperature of the power battery, includes:

[0014] When the first electric drive unit is determined to be in a preset low temperature state based on the oil temperature, and the power battery is determined to be in a preset low temperature state based on the water temperature of the power battery, the electric drive heating requirement corresponding to the first electric drive unit is determined according to the oil temperature, and the battery heating requirement corresponding to the power battery is determined according to the water temperature.

[0015] If the sum of the electric drive heating demand and the battery heating demand exceeds the preset heating supply, the first electric drive unit is heated until the first electric drive unit exits the low temperature state, and the power battery is heated.

[0016] In this embodiment, the heating requirements of the power battery and the electric drive system are predicted separately, and then it is determined whether the heating requirements exceed the preset heating supply. If so, it indicates that heating the power battery and the electric drive system at the same time will cause the preheating time to be too long. At this time, a preheating strategy of prioritizing heating the electric drive system and then heating the power battery is adopted, thereby further improving the flexibility of low temperature start-up preheating.

[0017] In some possible embodiments, determining that the first electric drive unit is in a preset low-temperature state based on the oil temperature includes:

[0018] If the oil temperature is determined to be below a preset first temperature threshold, the first electric drive unit is determined to be in a low-temperature state.

[0019] The step of determining that the power battery is in a preset low-temperature state based on the water temperature of the power battery includes:

[0020] The water temperature of the power battery is obtained, and if the water temperature is determined to be lower than a preset second temperature threshold, the power battery is determined to be in a low temperature state.

[0021] In this embodiment, the accuracy of low-temperature condition determination is effectively improved by determining whether the power battery and electric drive system are in a low-temperature state based on whether the oil temperature and water temperature exceed their respective thresholds.

[0022] In some possible embodiments, heating the first electric drive unit until it exits the low-temperature state and heating the power battery includes:

[0023] The heating unit is controlled to heat the first electric drive unit until the first electric drive unit exits the low temperature state, and then the heating unit is controlled to switch to heating the power battery.

[0024] The heat source of the heating unit includes the thermal energy generated by the engine.

[0025] In this embodiment, by using the heat energy generated by the engine as the heat source of the heating unit, and using the heating unit to preheat the electric drive system and the power battery at low temperatures in sequence, the heating efficiency of starting the vehicle at low temperatures is effectively improved.

[0026] In some possible embodiments, the hybrid vehicle further includes a second electric drive unit, which obtains its power solely from the power battery;

[0027] The step of heating the first electric drive unit until it exits the low-temperature state, and heating the power battery, includes:

[0028] The first electric drive unit is heated until it exits the low-temperature state, and the power battery and the second electric drive unit are heated synchronously.

[0029] In this embodiment of the application, when the hybrid vehicle also includes a second electric drive unit, the driving performance in low-temperature environments is further improved by heating the power battery and the second electric drive unit simultaneously after heating the first electric drive unit.

[0030] Secondly, embodiments of this application provide a thermal management control device for a hybrid vehicle. The hybrid vehicle includes an engine, a power battery, and a first electric drive unit. The power source for the first electric drive unit includes electricity generated by the engine through a generator. The device includes:

[0031] The command response module is used to respond to the low-temperature start command of the hybrid vehicle and obtain the oil temperature of the first electric drive unit;

[0032] The heating control module is used to heat the first electric drive unit when the oil temperature determines that the first electric drive unit is in a preset low temperature state, until the first electric drive unit exits the low temperature state.

[0033] Thirdly, embodiments of this application provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the program, can implement the method described in any embodiment of the first aspect.

[0034] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program, which, when executed by a processor, can implement the method described in any embodiment of the first aspect.

[0035] Fifthly, embodiments of this application provide a computer program product, the computer program product including a computer program, wherein when the computer program is executed by a processor, it can implement the method described in any embodiment of the first aspect.

[0036] Sixthly, embodiments of this application provide a vehicle including the electronic equipment described in the third aspect embodiment. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A schematic flowchart illustrating a thermal management control method for a hybrid vehicle provided in an embodiment of this application;

[0039] Figure 2 This is a schematic diagram of the structure of the thermal management control system for a hybrid vehicle provided in an embodiment of this application;

[0040] Figure 3 This is a schematic diagram of the structure of a thermal management control device for a hybrid vehicle provided in an embodiment of this application;

[0041] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0042] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0043] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] It should be noted that in order to ensure the operating performance of the power battery, the power battery needs to be preheated before driving the vehicle in a low-temperature environment.

[0045] Hybrid vehicles consist of an engine, an electric drive system, and a battery. In low-temperature environments, existing vehicle thermal management solutions only consider heating the battery, neglecting to heat the electric drive system. In fact, at low temperatures, the fluid viscosity within the electric drive system is extremely high, making it difficult to support vehicle operation, resulting in poor driving performance and affecting the lifespan of the electric drive system. Furthermore, if the battery is heated first, or if both the battery and the electric drive system are heated simultaneously, a long preheating time is required before the vehicle can be driven, impacting the driving experience when starting in cold weather.

[0046] To address the problems existing in the prior art, this application provides a thermal management control method for hybrid vehicles. Taking into account the characteristics of hybrid vehicles, a heating function for the electric drive system is first added. In terms of heating control strategy, the electric drive system is heated first, and the power battery is heated only after the electric drive system restores power to drive the vehicle to start. This effectively shortens the preheating time for starting the vehicle in low temperatures and improves the driving experience when starting in low temperatures.

[0047] like Figure 1 As shown, this application embodiment provides a thermal management control method for a hybrid vehicle. The hybrid vehicle includes an engine, a power battery, and a first electric drive unit. The power source for the first electric drive unit includes power generation by the engine through a generator.

[0048] It should be noted that the power system of the hybrid electric vehicle in this application embodiment mainly includes an engine, a power battery, and a first electric drive unit. According to the driving method, it can include the following types: 1. Driven solely by the engine; 2. Driven by the first electric drive unit, wherein the first electric drive unit is directly powered by electricity generated by the engine through a generator; 3. Driven by the first electric drive unit, wherein the first electric drive unit is powered by electricity provided by the power battery, and the electrical energy stored in the power battery is provided by electricity generated by the engine through a generator; 4. The second and third series range extender schemes; 5. The first, second, and third hybrid schemes combined in parallel.

[0049] The thermal management control method for hybrid vehicles may include the following steps:

[0050] S1. In response to the low-temperature start command of the hybrid vehicle, obtain the oil temperature of the first electric drive unit;

[0051] Specifically, if a command to start the vehicle and begin driving is received in a low-temperature environment, it is considered a low-temperature start command for the hybrid vehicle. In this case, the oil temperature of the first electric drive unit needs to be obtained for judgment and heating. The method for determining whether the current environment is a low-temperature environment can include any one or more of the following combinations: 1. Judging based on whether the ambient temperature is lower than a threshold; 2. Judging based on whether the water temperature / oil temperature of the engine / electric drive system / power battery is lower than a threshold.

[0052] It is understood that an electric drive system refers to a powertrain in which an electric motor provides driving force. In the embodiments of this application, the electric drive system includes a first electric drive unit. For example, the electric drive system of a hybrid vehicle may include a first electric drive unit (front electric drive unit) and a second electric drive unit (rear electric drive unit), wherein the front electric drive unit can be directly powered by the engine through a generator, while the rear electric drive unit can only be powered by a power battery.

[0053] S2. If the first electric drive unit is determined to be in a preset low temperature state based on the oil temperature, the first electric drive unit is heated until the first electric drive unit exits the low temperature state.

[0054] When the oil temperature of the first electric drive unit indicates that the first electric drive unit is in a preset low-temperature state, the first electric drive unit needs to be heated until the first electric drive unit exits the low-temperature state.

[0055] Specifically, whether the first electric drive unit is in a preset low-temperature state can be determined based on whether the oil temperature is lower than a preset first temperature threshold: when the oil temperature is determined to be lower than the first temperature threshold, the first electric drive unit is determined to be in a low-temperature state. Correspondingly, after heating the first electric drive unit, when the oil temperature is determined to be not lower than the first temperature threshold, the first electric drive unit is determined to exit the low-temperature state.

[0056] It should be noted that when the first electric drive unit exits the low-temperature state, the second drive method described above can be used to control the vehicle drive. At this time, the vehicle can be driven by the first, second, and series / parallel combinations of the first and second methods.

[0057] Based on this, since the power battery is not heated temporarily, the limited heating resources can be concentrated on heating the first electric drive unit, so that the first electric drive unit can quickly return to normal and meet the operating conditions, thereby effectively shortening the preheating time for starting the vehicle in low temperatures.

[0058] In some possible embodiments, step S2, which involves heating the first electric drive unit until it exits the low-temperature state after determining that the first electric drive unit is in a preset low-temperature state based on the oil temperature, may include:

[0059] S201. When the first electric drive unit is determined to be in a preset low temperature state based on the oil temperature and the power battery is determined to be in a preset low temperature state based on the water temperature of the power battery, the first electric drive unit is heated until the first electric drive unit exits the low temperature state, and the power battery is heated.

[0060] Specifically, in addition to obtaining the oil temperature for judgment, the water temperature of the power battery can also be obtained simultaneously to determine whether the power battery is in a preset low-temperature state. Similar to the judgment logic of the first electric drive unit, when the water temperature of the power battery is determined to be lower than the preset second temperature threshold, the power battery is determined to be in a low-temperature state; similarly, after heating the power battery, when the water temperature of the power battery is determined to be not lower than the preset second temperature threshold, the power battery is determined to have exited the low-temperature state.

[0061] It should be noted that when both the first electric drive unit and the power battery are determined to be in a low-temperature state, the first electric drive unit is heated first. At this time, the power battery can be completely left unheated, or heating resources can be allocated according to a preset ratio to heat the first electric drive unit and the power battery respectively, thereby taking into account the overall heating efficiency of both.

[0062] Understandably, with the same heating power, the time required to heat the electric drive system to a suitable temperature is usually shorter than the time required to heat the power battery to a suitable temperature (which may be the same as or different from the suitable temperature of the electric drive system). Therefore, by prioritizing the heating of the electric drive system, the power mode of "engine-generator-first electric drive unit" can be restored in the shortest possible time. Only after this can the heating of the power battery be considered. This can minimize the time required to start the vehicle in low temperatures and effectively improve the driving experience when starting the vehicle in low temperatures.

[0063] In some possible embodiments, step S201, where the first electric drive unit is determined to be in a preset low-temperature state based on the oil temperature and the power battery is determined to be in a preset low-temperature state based on the water temperature of the power battery, involves heating the first electric drive unit until it exits the low-temperature state, and heating the power battery, and may include:

[0064] S2011. When the first electric drive unit is determined to be in a preset low temperature state based on the oil temperature and the power battery is determined to be in a preset low temperature state based on the water temperature of the power battery, the electric drive heating requirement corresponding to the first electric drive unit is determined according to the oil temperature, and the battery heating requirement corresponding to the power battery is determined according to the water temperature.

[0065] S2011. When the sum of the electric drive heating demand and the battery heating demand exceeds the preset heating supply, the first electric drive unit is heated until the first electric drive unit exits the low temperature state, and the power battery is heated.

[0066] Specifically, when both the first electric drive unit and the power battery are in a low-temperature state, the electric drive heating requirement corresponding to the first electric drive unit and the battery heating requirement corresponding to the power battery are first obtained respectively. The method for obtaining the electric drive heating requirement corresponding to the first electric drive unit may include: determining a first temperature difference based on the currently obtained oil temperature and a preset suitable temperature threshold; and then determining the electric drive heating requirement corresponding to the first electric drive unit at the current oil temperature based on the correspondence between the first temperature difference and a preset heating requirement. Similarly, the method for obtaining the battery heating requirement corresponding to the power battery may include: determining a second temperature difference based on the currently obtained water temperature and a preset suitable temperature threshold; and then determining the battery heating requirement corresponding to the power battery at the current water temperature based on the correspondence between the second temperature difference and a preset heating requirement.

[0067] If the total heating demand of the electric drive unit and the battery exceeds the preset heating supply, it is explained that if the heating power is given, it would take too long to heat the first electric drive unit and the power battery at the same time. Therefore, it is not suitable to adopt the strategy of simultaneous heating. In this case, the heating strategy is set to prioritize heating the first electric drive unit, and then heat the power battery after the first electric drive unit has exited the low temperature state.

[0068] In some possible embodiments, the first electric drive unit is heated until it exits the low-temperature state, and the power battery is heated, including:

[0069] The heating unit is controlled to heat the first electric drive unit until the first electric drive unit exits the low temperature state, and then the heating unit is controlled to switch to heating the power battery.

[0070] The heat source for the heating unit includes the heat energy generated by the engine.

[0071] It should be noted that the heating unit can use a PTC heater to convert electrical energy into heat energy for heating. The electrical energy for the PTC heater is usually obtained from the generator driven by the engine. Alternatively, the heating unit can also directly obtain heat energy generated by the engine through the flow of coolant as a heating source.

[0072] It is understandable that the amount of heat that a single heating unit can provide is limited. Therefore, in order to restore the hybrid performance of the vehicle more quickly in low-temperature environments, the system is designed to first heat the first electric drive unit. Once the first electric drive unit has exited the low-temperature state, the hybrid drive mode can be provided (at this time, the engine generates electricity, the first electric drive unit consumes electricity to drive, the second electric drive unit does not participate in driving, and the power battery does not participate in charging and discharging). Then, the power battery is heated.

[0073] In some possible embodiments, the hybrid vehicle also includes a second electric drive unit, which obtains its power solely from the power battery;

[0074] Heating the first electric drive unit until it exits the low-temperature state, and heating the power battery, including:

[0075] The first electric drive unit is heated until it exits the low-temperature state, and the power battery and the second electric drive unit are heated synchronously.

[0076] Specifically, a hybrid vehicle may include a first electric drive unit (front electric drive unit) and a second electric drive unit (rear electric drive unit). The front electric drive unit can be powered directly by an engine generating electricity through a generator, while the rear electric drive unit can only be powered by a battery. After heating the first electric drive unit to remove it from its low-temperature state, a hybrid drive mode can be provided (in this mode, the engine generates electricity, the first electric drive unit consumes electricity for driving, the second electric drive unit does not participate in driving, and the battery does not participate in charging or discharging).

[0077] Then, the power battery and the second electric drive unit are heated synchronously. Specifically, the heating power provided by the heating unit can be distributed equally to simultaneously heat the power battery and the second electric drive unit; alternatively, the heating power can be distributed according to a preset ratio to simultaneously heat the power battery and the second electric drive unit. The heating power distribution ratio can be determined based on the heating needs of the power battery and the second electric drive unit. For example, the first heating requirement can be determined based on the water temperature of the power battery and a preset suitable temperature threshold. Then, the second heating requirement can be determined based on the oil temperature of the second electric drive unit and a preset suitable temperature threshold (which may be the same as or different from the suitable temperature threshold corresponding to the power battery). The corresponding heating power distribution ratio is then determined according to the relationship between the first and second heating requirements.

[0078] Alternatively, the power battery (or the second electric drive unit) can be heated first, and then the second electric drive unit (power battery) can be heated.

[0079] Please see Figure 2 As an example, the following is a detailed explanation using a specific thermal management system:

[0080] This example uses a series-parallel hybrid four-wheel drive vehicle with front-wheel drive and rear electric drive as an example. Its thermal management system mainly includes: engine radiator 1, engine 2, first three-way valve 3, second electric water pump 4, PTC heater 5 (heating unit), second three-way valve 6, power battery 7, battery cooling system 8, water-to-water heat exchanger 9, electric drive radiator 10, third electric water pump 11, rear electric drive 12 (second electric drive unit), third three-way valve 13, front electric drive 14 (first electric drive unit), and first electric water pump 15.

[0081] in:

[0082] The power battery 7, the battery cooling system 8, and the water-to-water heat exchanger 9 constitute the battery cooling circuit;

[0083] When the first three-way valve 3 is biased to the left, the engine radiator 1, the engine 2 and the first electric water pump 15 form the engine cooling circuit.

[0084] When the first three-way valve 3 is biased to the right, the second three-way valve 6 is biased to the left, and the third three-way valve 13 is biased to the left, the engine 2, the first electric water pump 15, the second electric water pump 4, the PTC heater 5 and the front electric drive 14 form the front electric drive heating circuit.

[0085] When the first three-way valve 3, the second three-way valve 6, and the third three-way valve 13 are biased to the right, the engine 2, the first electric water pump 15, the second electric water pump 4, the PTC heater 5, and the water-to-water heat exchanger 9 form a battery heating circuit.

[0086] When the third three-way valve 13 is biased to the right position, the front electric drive 14, the electric drive radiator 10, the third electric water pump 11, and the rear electric drive 12 form an electric drive heat dissipation loop.

[0087] It should be noted that the controller controls the bias of each three-way valve to switch to different heating / dissipation loops, and controls devices such as each electric water pump to perform corresponding heating / dissipation operations.

[0088] The thermal management control of this embodiment may include the following processes:

[0089] 1. Obtain the water temperature S1 of the power battery 7 and the oil temperature S2 of the front electric drive 14;

[0090] 2. If it is determined that S1 < T1 and S2 < T2 (where T1 is the low-temperature threshold of the power battery 7 and T2 is the low-temperature threshold of the front electric drive 14), it is determined that both the power battery 7 and the front electric drive 14 are in the low-temperature state. At this time, control the first three-way valve 3 to the right position, the second three-way valve 6 to the left position, and the third three-way valve 13 to the left position to form a front electric drive heating loop. The engine runs and the PTC heater 5 works to fully heat the engine 2 and the front electric drive 14 without heating the power battery 7; when S2 ≥ T2, the power system can be controlled to be in series drive (the engine 2 generates electricity, the front electric drive 14 consumes electricity for driving, the rear electric drive 12 does not participate in driving, and the power battery 7 does not participate in charging and discharging), so as to quickly withdraw the electric drive system from the low-temperature state to meet the driving conditions in a low-temperature environment.

[0091] 3. When it is determined that S2 ≥ T2, it is determined that the front electric drive 14 has exited the low-temperature state. At this time, control the first three-way valve 3 to the right position, the second three-way valve 6 to the right position, and the third three-way valve 13 to the right position to form a battery heating loop. At this time, the front electric drive 14 is not heated, and the power battery 7 is intensively heated to quickly withdraw the power battery 7 from the low-temperature state to restore the charging and discharging function of the power battery 7.

[0092] Based on this, when starting the vehicle in a low-temperature environment, by heating the front electric drive 14 and the power battery in sequence, giving priority to allowing the front electric drive to exit the low-temperature state and then allowing the power battery to exit the low-temperature state, that is, first restoring the power of the front electric drive and then restoring the battery charging and discharging function, the time for starting the vehicle in low temperature can be shortened, and the driving experience of starting the vehicle in low temperature can be effectively improved.

[0093] Please refer to Figure 3 , Figure 3 which shows a block diagram of the composition of the thermal management control device of a hybrid vehicle provided by some embodiments of the present application. It should be understood that the thermal management control device of this hybrid vehicle corresponds to the above Figure 1 method embodiment and can execute each step involved in the above method embodiment. The specific functions of the thermal management control device of this hybrid vehicle can be seen in the above description. To avoid repetition, the detailed description is appropriately omitted here.

[0094] Figure 3 The thermal management control device for the hybrid vehicle includes at least one software function module that can be stored in a memory or embedded in the thermal management control device of the hybrid vehicle in the form of software or firmware. The hybrid vehicle includes an engine, a power battery, and a first electric drive unit. The power source for the first electric drive unit includes electricity generated by the engine through a generator. The thermal management control device for the hybrid vehicle includes:

[0095] The command response module 310 is used to obtain the oil temperature of the first electric drive unit in response to the low temperature start command of the hybrid vehicle.

[0096] The heating control module 320 is used to heat the first electric drive unit when the oil temperature determines that the first electric drive unit is in a preset low temperature state, until the first electric drive unit exits the low temperature state.

[0097] It is understood that the above-described device embodiments correspond to the method embodiments of the present invention. The thermal management control device for hybrid vehicles provided by the embodiments of the present invention can implement the thermal management control method for hybrid vehicles provided by any one of the method embodiments of the present invention.

[0098] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process of the device described above can be referred to the corresponding process in the aforementioned method, and will not be elaborated further here.

[0099] like Figure 4 As shown, some embodiments of this application provide an electronic device 400, which includes a memory 410, a processor 420, and a computer program stored in the memory 410 and executable on the processor 420. When the processor 420 reads the program from the memory 410 via a bus 430 and executes the program, it can implement any of the methods included in the above-described thermal management control method for hybrid vehicles.

[0100] Processor 420 can process digital signals and may include various computing architectures. For example, it may be a complex instruction set computer architecture, a reduced instruction set computer architecture, or an architecture that implements multiple instruction set combinations. In some examples, processor 420 may be a microprocessor.

[0101] Memory 410 can be used to store instructions executed by processor 420 or data related to the execution of instructions. These instructions and / or data may include code for implementing some or all of the functions of one or more modules described in the embodiments of this application. The processor 420 of this disclosure embodiment can be used to execute instructions in memory 410 to implement the methods shown above. Memory 410 includes dynamic random access memory, static random access memory, flash memory, optical memory, or other memories well known to those skilled in the art.

[0102] Some embodiments of this application also provide a computer-readable storage medium storing a computer program that, when executed by a processor, describes the method described in the method embodiments.

[0103] Some embodiments of this application also provide a computer program product that, when run on a computer, causes the computer to perform the methods described in the method embodiments.

[0104] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For apparatus embodiments, since they are basically similar to method embodiments, the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0105] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative; for example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0106] In addition, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0107] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion 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 network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0108] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0109] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0110] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A thermal management control method of a hybrid vehicle, characterized by, The hybrid vehicle includes an engine, a power battery and a first electric drive unit, and an electric energy acquisition source of the first electric drive unit includes power generation by the engine through a generator, and the method includes: In response to a low-temperature starting instruction of the hybrid vehicle, an oil temperature of the first electric drive unit is acquired; In a case where it is determined based on the oil temperature that the first electric drive unit is in a preset low-temperature state, the first electric drive unit is heated until the first electric drive unit exits the low-temperature state; The heating of the first electric drive unit until the first electric drive unit exits the low-temperature state in the case where it is determined based on the oil temperature that the first electric drive unit is in the preset low-temperature state includes: In a case where it is determined based on the oil temperature that the first electric drive unit is in the preset low-temperature state and based on a water temperature of the power battery that the power battery is in a preset low-temperature state, the first electric drive unit is heated until the first electric drive unit exits the low-temperature state, and the power battery is heated; The heating of the first electric drive unit until the first electric drive unit exits the low-temperature state in the case where it is determined based on the oil temperature that the first electric drive unit is in the preset low-temperature state and based on the water temperature of the power battery that the power battery is in the preset low-temperature state includes: In the case where it is determined based on the oil temperature that the first electric drive unit is in the preset low-temperature state and based on the water temperature of the power battery that the power battery is in the preset low-temperature state, an electric drive heating demand amount corresponding to the first electric drive unit is determined according to the oil temperature, and a battery heating demand amount corresponding to the power battery is determined according to the water temperature; In a case where a sum of the electric drive heating demand amount and the battery heating demand amount exceeds a preset heating supply amount, the first electric drive unit is heated until the first electric drive unit exits the low-temperature state, and the power battery is heated.

2. The thermal management control method of a hybrid vehicle according to claim 1, characterized by, The determination based on the oil temperature that the first electric drive unit is in the preset low-temperature state includes: In a case where the oil temperature is lower than a preset first temperature threshold, it is determined that the first electric drive unit is in a low-temperature state; The determination based on the water temperature of the power battery that the power battery is in the preset low-temperature state includes: The water temperature of the power battery is acquired, and in a case where the water temperature is lower than a preset second temperature threshold, it is determined that the power battery is in a low-temperature state.

3. The thermal management control method of a hybrid vehicle according to claim 1, characterized by, The heating of the first electric drive unit until the first electric drive unit exits the low-temperature state and the heating of the power battery include: A heating unit is controlled to heat the first electric drive unit until the first electric drive unit exits the low-temperature state, and the heating unit is controlled to heat the power battery; The heating unit is heated by heat energy generated by the engine.

4. The thermal management control method of a hybrid vehicle according to claim 1, characterized by, The hybrid vehicle further includes a second electric drive unit, and the second electric drive unit only uses the power battery as an electric energy acquisition source. The first electric drive unit is heated until the first electric drive unit exits the low-temperature state, and the power battery is heated. The first electric drive unit is heated until the first electric drive unit exits the low-temperature state, and the power battery and the second electric drive unit are synchronously heated.

5. A thermal management control device of a hybrid vehicle, characterized by, The hybrid vehicle includes an engine, a power battery, and a first electric drive unit, and the electric energy of the first electric drive unit is obtained from the engine through a generator. The instruction response module is configured to obtain the oil temperature of the first electric drive unit in response to a low-temperature starting instruction of the hybrid vehicle. The heating control module is configured to heat the first electric drive unit until the first electric drive unit exits the low-temperature state when it is determined that the first electric drive unit is in a preset low-temperature state based on the oil temperature. The heating control module is specifically configured to heat the first electric drive unit until the first electric drive unit exits the low-temperature state, and heat the power battery when it is determined that the first electric drive unit is in a preset low-temperature state based on the oil temperature and that the power battery is in a preset low-temperature state based on the water temperature of the power battery. The heating control module is specifically configured to determine the electric drive heating demand of the first electric drive unit according to the oil temperature and determine the battery heating demand of the power battery according to the water temperature when it is determined that the first electric drive unit is in a preset low-temperature state based on the oil temperature and that the power battery is in a preset low-temperature state based on the water temperature of the power battery. The first electric drive unit is heated until the first electric drive unit exits the low-temperature state, and the power battery is heated when it is determined that the sum of the electric drive heating demand and the battery heating demand exceeds a preset heating supply.

6. An electronic device, comprising: The computer readable storage medium stores a computer program, and the computer program is run on the processor to perform the hybrid vehicle thermal management control method of any one of claims 1-4.

7. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program is run on the processor to perform the hybrid vehicle thermal management control method of any one of claims 1-4.

8. A vehicle characterized by comprising: The electronic device includes the electronic device of claim 6.

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