Thermal management control method, device and equipment of hybrid vehicle, medium and vehicle

Abstract

The embodiment of the invention provides a thermal management control method, device and equipment of a hybrid vehicle, a medium and the vehicle, and relates to the technical field of thermal management. The hybrid vehicle comprises an engine, a power battery and a first electric drive unit, an electric energy obtaining source of the first electric drive unit is obtained by generating electricity through a generator by the engine, and the method comprises the steps that in response to a low-temperature starting instruction of the hybrid vehicle, the oil temperature of the first electric drive unit is obtained; and when it is determined that the first electric drive unit is in a preset low-temperature state based on the oil temperature, the first electric drive unit is heated until the first electric drive unit quits the low-temperature state. According to the embodiment of the invention, the function of heating the electric drive system is added, the electric drive system is firstly heated when the vehicle is started at low temperature, so that the electric drive system can quickly meet the driving condition, and the engine is used for providing power generation to quickly recover power, so that the driving experience of low-temperature vehicle starting is improved.

Description

Technical Field

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

[0002] The power system of hybrid vehicles mainly includes engines, electric drive systems and batteries. Compared with traditional vehicles, hybrid vehicles have added high-voltage systems, which can provide vehicles with a variety of power modes, but the low-temperature performance of the battery is severely degraded and cannot be compared with the low-temperature performance of traditional vehicles. Since the operating temperature range of the battery is much narrower than the operating temperature range of the engine, it is necessary to add a thermal management system to heat the battery at low temperatures and dissipate heat at high temperatures. In addition, due to the high viscosity of the oil in the electric drive system under low temperature conditions, it is difficult to support normal driving of the vehicle. Therefore, in order to ensure the operating performance of the hybrid vehicle, before starting the vehicle in a low temperature environment, the power battery and electric drive system need to be heated to the appropriate temperature.

[0003] At present, the existing hybrid vehicle thermal management solutions do not consider preheating the electric drive system in low temperature environments, which will not only affect the vehicle's operating performance, but may also cause damage to the electric drive system. In addition, since the heating time of the power battery is long, if the power battery is preheated before starting the vehicle in a low temperature environment, the vehicle will need to wait for a relatively long preheating time before driving, affecting the driving experience of starting the vehicle in low temperature.

[0004] In summary, there is an urgent need for a solution that can shorten the preheating time for low-temperature starting. Summary of the invention

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

[0006] In a first aspect, an embodiment of the present application provides a thermal management control method for a hybrid vehicle, wherein the hybrid vehicle includes an engine, a power battery, and a first electric drive unit, wherein the electric energy of the first electric drive unit is obtained from the power generated by the engine through a generator, and the method includes:

[0007] In response to a low-temperature start instruction of the hybrid vehicle, acquiring an oil temperature of the first electric drive unit;

[0008] 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.

[0009] In an embodiment of the present application, a function of heating the electric drive system is added, and the electric drive system is heated first when starting the vehicle at low temperature, so that the electric drive system can quickly reach the driving conditions, and use the engine to provide power generation to quickly restore power, thereby improving the driving experience when starting the vehicle at low temperature.

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

[0011] When it is determined based on the oil temperature that the first electric drive unit is in a preset low temperature state, and when it is determined based on the 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.

[0012] In an embodiment of the present application, when both the power battery and the electric drive system are in a low-temperature state, heating resources are preferentially concentrated to heat the electric drive system, and after the electric drive system exits the low-temperature state, the power battery is heated using limited heating resources, thereby quickly restoring the vehicle's low-temperature starting power.

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

[0014] 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, and based on the water temperature of the power battery that the power battery is in a preset low temperature state, determining an electric drive heating demand corresponding to the first electric drive unit according to the oil temperature, and determining a battery heating demand corresponding to the power battery according to the water temperature;

[0015] When it is determined that 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 the embodiment of the present application, the heating requirements of the power battery and the electric drive system are predicted respectively, and then it is determined whether the heating requirements exceed the preset heating supply. If so, it means 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, the preheating strategy of preferentially heating the electric drive system and then heating the power battery is adopted, thereby further improving the flexibility of preheating when starting the vehicle at low temperatures.

[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] When it is determined that the oil temperature is lower than a preset first temperature threshold, determining that the first electric drive unit is in a low temperature state;

[0019] The 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 when it is determined that the water temperature is lower than a preset second temperature threshold, it is determined that the power battery is in a low temperature state.

[0021] In the embodiment of the present application, whether the power battery and the electric drive system are in a low-temperature state is judged based on whether the oil temperature and the water temperature exceed their respective corresponding thresholds, thereby effectively improving the accuracy of the low-temperature state judgment.

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

[0023] Controlling the heating unit to heat the first electric drive unit until the first electric drive unit exits the low temperature state, and controlling the heating unit to heat the power battery instead;

[0024] Wherein, the heat source of the heating unit includes heat energy generated by the engine.

[0025] In the embodiment of the present application, the heat energy generated by the engine is used as the heat source of the heating unit, and the heating unit is used to preheat the electric drive system and the power battery in turn at low temperatures, thereby effectively improving the heating efficiency of low-temperature starting.

[0026] In some possible embodiments, the hybrid vehicle further includes a second electric drive unit, and the second electric drive unit only uses the power battery as a source of electric energy;

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

[0028] 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 heated synchronously.

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

[0030] In a second aspect, an embodiment of the present application provides a thermal management control device for a hybrid vehicle, wherein the hybrid vehicle includes an engine, a power battery, and a first electric drive unit, wherein the electric energy of the first electric drive unit is obtained from the power generated by the engine through a generator, and the device includes:

[0031] a command response module, configured to obtain the oil temperature of the first electric drive unit in response to a low-temperature start command of the hybrid vehicle;

[0032] The heating control module is used to heat the first electric drive unit when it is determined based on the oil temperature 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] In a third aspect, an embodiment of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor can implement the method described in any embodiment of the first aspect when executing the program.

[0034] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the method described in any embodiment of the first aspect can be implemented.

[0035] In a fifth aspect, an embodiment of the present application provides a computer program product, wherein the computer program product includes a computer program, wherein when the computer program is executed by a processor, the method described in any embodiment of the first aspect can be implemented.

[0036] In a sixth aspect, an embodiment of the present application provides a vehicle, comprising the electronic device described in the embodiment of the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A schematic flow chart of a thermal management control method for a hybrid vehicle provided in an embodiment of the present application;

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

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

[0041] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0043] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood 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 include engines, electric drive systems, and power batteries. In low-temperature environments, existing vehicle thermal management solutions only consider heating the power battery, while ignoring the heating of the electric drive system. In fact, the oil viscosity in the electric drive system is extremely high at low temperatures, which makes it difficult to support vehicle driving, resulting in poor vehicle driving performance and affecting the service life of the electric drive system. In addition, if the power battery is heated first, or the power battery and the electric drive system are heated at the same time, it will take a long preheating time before the vehicle can be driven, affecting the driving experience of starting the vehicle at low temperatures.

[0046] In view of the problems existing in the above-mentioned prior art, an embodiment of the present application provides a thermal management control method for a hybrid vehicle. In view of the characteristics of hybrid vehicles, a heating function for an electric drive system is first added, and the heating control strategy is arranged to heat the electric drive system first, and then heat the power battery after the electric drive system recovers power to drive the vehicle to start, thereby effectively shortening the preheating time for starting the vehicle at low temperatures and improving the driving experience for starting the vehicle at low temperatures.

[0047] like Figure 1 As shown, an embodiment of the present application provides a thermal management control method for a hybrid vehicle, wherein the hybrid vehicle includes an engine, a power battery, and a first electric drive unit, wherein the electric energy of the first electric drive unit is obtained from the power generated by the engine through a generator;

[0048] It should be noted that the power system of the hybrid vehicle of the embodiment of the present application mainly includes an engine, a power battery and a first electric drive unit, which can be divided into the following types according to the driving mode: 1. Driven by the engine alone; 2. Driven by the first electric drive unit, wherein the first electric drive unit is directly provided with electric energy by the engine through the generator; 3. Driven by the first electric drive unit, wherein the first electric drive unit is provided with electric energy by the power battery, and the electric energy stored in the power battery is provided by the engine through the generator. 4. The second and third series range extension schemes; 5. The first, second and third combined parallel hybrid schemes.

[0049] The thermal management control method of a hybrid vehicle may include the steps of:

[0050] S1, in response to a low-temperature start command of a hybrid vehicle, obtaining an oil temperature of a first electric drive unit;

[0051] Specifically, if a command is received in a low-temperature environment that the vehicle needs to start and start driving, it is regarded as a low-temperature start command for the hybrid vehicle, and at this time, the oil temperature of the first electric drive unit needs to be obtained for judgment and heating. Among them, the judgment method of 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 the electric drive system refers to a powertrain in which the driving force is provided by an electric motor. In the embodiment of the present application, the electric drive system includes a first electric drive unit. Exemplarily, 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 may be directly powered by the engine through a generator, and the rear electric drive unit may only be powered by a power battery.

[0053] S2. When it is determined based on the oil temperature that the first electric drive unit is in a preset low-temperature state, heating the first electric drive unit until the first electric drive unit exits the low-temperature state.

[0054] When it is determined according to the oil temperature of the first electric drive unit 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 it is determined that the oil temperature is lower than the first temperature threshold, it is determined that the first electric drive unit is in a low temperature state. Accordingly, after the first electric drive unit is heated, when it is determined that the oil temperature is not lower than the first temperature threshold, it is determined that the first electric drive unit exits the low temperature state.

[0056] It should be noted that when the first electric drive unit exits the low-temperature state, the above-mentioned second driving mode can be used to control the vehicle drive. At this time, the vehicle can provide the first, second and first and second series / parallel combinations to drive the vehicle.

[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 recover to a normal state to meet the operating conditions, thereby effectively shortening the preheating time for low-temperature starting.

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

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

[0060] Specifically, in addition to obtaining the oil temperature for judgment, the water temperature of the power battery can also be obtained for judgment 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 it is determined that the water temperature of the power battery is lower than the preset second temperature threshold, it is determined that the power battery is in a low temperature state; similarly, after the power battery is heated, when it is determined that the water temperature of the power battery is not lower than the preset second temperature threshold, it is determined that the power battery has exited the low temperature state.

[0061] It should be noted that when it is determined that both the first electric drive unit and the power battery are in a low temperature state, the first electric drive unit is heated first. At this time, the power battery may not be heated at all, or the heating resources may 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] It is understandable that, under the same heating power, since the time required to heat the electric drive system to a suitable temperature is usually less 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), the electric drive system is heated first and the power mode of at least the "engine-generator-first electric drive unit" is restored in the shortest time. After that, the power battery can be heated, thereby shortening the time for starting the vehicle at low temperatures to the greatest extent and effectively improving the driving experience of starting the vehicle at low temperatures.

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

[0064] S2011, when it is determined based on the oil temperature that the first electric drive unit is in a preset low temperature state, and based on the water temperature of the power battery, it is determined that the power battery is in a preset low temperature state, determining an electric drive heating demand corresponding to the first electric drive unit according to the oil temperature, and determining a battery heating demand corresponding to the power battery according to the water temperature;

[0065] S2011. When it is determined that 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 the first electric drive unit and the power battery are both in a low temperature state, firstly, the electric drive heating demand corresponding to the first electric drive unit and the battery heating demand corresponding to the power battery are respectively obtained. The method for obtaining the electric drive heating demand corresponding to the first electric drive unit may include: determining a first temperature difference according to the currently obtained oil temperature and a preset appropriate temperature threshold, and then determining the electric drive heating demand corresponding to the first electric drive unit at the current oil temperature according to the correspondence between the first temperature difference and the preset heating demand. Similarly, the method for obtaining the battery heating demand corresponding to the power battery may include: determining a second temperature difference according to the currently obtained water temperature and a preset appropriate temperature threshold, and then determining the battery heating demand corresponding to the power battery at the current water temperature according to the correspondence between the second temperature difference and the preset heating demand.

[0067] When it is determined that the sum of the electric drive heating demand and the battery heating demand exceeds the preset heating supply, it means that with a given heating power, it takes too long to heat the first electric drive unit and the power battery at the same time, so it is not suitable to adopt a simultaneous heating strategy. Therefore, in this case, the heating strategy is set to give priority to heating the first electric drive unit with heating resources, and then heat the power battery after the first electric drive unit exits the low temperature state.

[0068] In some possible embodiments, heating the first electric drive unit until the first electric drive unit exits the low temperature state and heating the power battery includes:

[0069] Controlling the heating unit to heat the first electric drive unit until the first electric drive unit exits the low temperature state, and controlling the heating unit to switch to heating the power battery;

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

[0071] It should be noted that the heating unit can be converted by a PTC heater to convert electrical energy into thermal energy for heating, wherein the electrical energy of the PTC heater is usually generated by the engine driving the generator to generate electricity. In addition, the heating unit can also directly obtain the thermal energy produced by the engine as a heat source for heating through the flow of coolant.

[0072] It is understandable that for the same heating unit, the amount of heating it can provide is limited. Therefore, in order to restore the hybrid performance of the vehicle more quickly in a low-temperature environment, it is configured to heat the first electric drive unit first. After the first electric drive unit exits the low-temperature state, a 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), and then the power battery is heated.

[0073] In some possible embodiments, the hybrid vehicle further includes a second electric drive unit, and the second electric drive unit only uses a power battery as a source of electric energy;

[0074] The first electric drive unit is heated until the first electric drive unit exits the low temperature state, and the power battery is heated, including:

[0075] 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 heated synchronously.

[0076] Specifically, the 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 the generator, and the rear electric drive unit can only be powered by the power battery. After the first electric drive unit is heated to exit the low-temperature state, a hybrid driving mode can be provided (at this time, 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 power battery does not participate in charging and 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 evenly distributed to heat the power battery and the second electric drive unit synchronously; the heating power can also be distributed according to a preset ratio to heat the power battery and the second electric drive unit synchronously. Among them, the heating power distribution ratio of the two can be determined according to the heating requirements of the power battery and the second electric drive unit. For example, the corresponding first heating demand can be first determined according to the water temperature of the power battery and the preset appropriate temperature threshold, and then the corresponding second heating demand can be determined according to the oil temperature of the second electric drive unit and the preset appropriate temperature threshold (the same or different from the appropriate temperature threshold corresponding to the power battery), and the corresponding heating power distribution ratio is determined according to the size relationship between the first heating demand and the second heating demand.

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

[0079] See also Figure 2 As an example, the following is a detailed description in combination with a specific thermal management system:

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

[0083] When the first three-way valve 3 is biased to the left position, the engine radiator 1, the engine 2 and the first electric water pump 15 form an 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 a front electric drive heating circuit;

[0085] When the first three-way valve 3 is biased to the right, the second three-way valve 6 is biased to the right, and the third three-way valve 13 is 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 circuit.

[0087] It should be noted that the controller controls the bias of each three-way valve to switch to different heating / dissipation circuits, 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 a 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 circuit. 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 for 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 exit the low temperature state of the electric drive system in a low temperature environment to meet the driving conditions.

[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 circuit. At this time, the front electric drive 14 is not heated, and the power battery 7 is concentratedly heated to quickly exit the low temperature state of the power battery 7 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 low temperature starting time can be shortened and the driving experience of low temperature starting can be effectively improved.

[0093] Please refer to Figure 3 , Figure 3 which shows the 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 of a hybrid vehicle includes at least one software function module that can be stored in a memory in the form of software or firmware or fixed in the thermal management control device of the hybrid vehicle. The hybrid vehicle includes an engine, a power battery and a first electric drive unit. The electric energy acquisition source of the first electric drive unit includes power generated by the engine through a generator. The thermal management control device of 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 it is determined based on the oil temperature 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 can be understood that the above-mentioned device embodiment corresponds to the method embodiment of the present invention. A thermal management control device for a hybrid vehicle provided by the embodiment of the present invention can implement the thermal management control method for a hybrid vehicle provided by any method embodiment of the present invention.

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

[0099] like Figure 4 As shown, some embodiments of the present 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, wherein the processor 420 reads the program from the memory 410 through a bus 430 and executes the program to implement a method of any embodiment included in the thermal management control method of the hybrid vehicle described above.

[0100] Processor 420 can process digital signals and can include various computing structures, such as complex instruction set computer structure, reduced instruction set computer structure, or a structure that implements a combination of multiple instruction sets. In some examples, processor 420 can be a microprocessor.

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

[0102] Some embodiments of the present application further provide a computer-readable storage medium having a computer program stored thereon. The computer program is executed by a processor to execute the method described in the method embodiment.

[0103] Some embodiments of the present application further provide a computer program product, which, when executed on a computer, enables the computer to execute the method described in the method embodiment.

[0104] It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0105] In several embodiments provided by the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

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

[0107] If the functions are implemented in the form of software function 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 the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0108] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0109] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0110] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A thermal management control method for a hybrid vehicle, characterized in that: The hybrid vehicle includes an engine, a power battery and a first electric drive unit, the electric energy of the first electric drive unit is obtained from the power generated by the engine through a generator, and the method includes: In response to a low-temperature start instruction of the hybrid vehicle, acquiring an oil temperature of the first electric drive unit; 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.

2. The thermal management control method for a hybrid vehicle according to claim 1, characterized in that: When it is determined based on the oil temperature that the first electric drive unit is in a preset low temperature state, heating the first electric drive unit until the first electric drive unit exits the low temperature state includes: When it is determined based on the oil temperature that the first electric drive unit is in a preset low temperature state, and when it is determined based on the 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.

3. The thermal management control method for a hybrid vehicle according to claim 2, characterized in that: When it is determined based on the oil temperature that the first electric drive unit is in a preset low temperature state, and based on the water temperature of the power battery that the power battery is in a preset low temperature state, heating the first electric drive unit until the first electric drive unit exits the low temperature state, and heating the power battery, comprises: 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, and based on the water temperature of the power battery that the power battery is in a preset low temperature state, determining an electric drive heating demand corresponding to the first electric drive unit according to the oil temperature, and determining a battery heating demand corresponding to the power battery according to the water temperature; When it is determined that 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.

4. The thermal management control method for a hybrid vehicle according to claim 2, characterized in that: The determining, based on the oil temperature, that the first electric drive unit is in a preset low temperature state includes: When it is determined that the oil temperature is lower than a preset first temperature threshold, determining that the first electric drive unit is in a low temperature state; The determining that the power battery is in a preset low temperature state based on the water temperature of the power battery includes: The water temperature of the power battery is obtained, and when it is determined that the water temperature is lower than a preset second temperature threshold, it is determined that the power battery is in a low temperature state.

5. The thermal management control method for a hybrid vehicle according to claim 2, characterized in that: The step of heating the first electric drive unit until the first electric drive unit exits a low temperature state and heating the power battery includes: Controlling the heating unit to heat the first electric drive unit until the first electric drive unit exits the low temperature state, and controlling the heating unit to heat the power battery instead; Wherein, the heat source of the heating unit includes heat energy generated by the engine.

6. The thermal management control method for a hybrid vehicle according to claim 2, characterized in that: The hybrid vehicle further includes a second electric drive unit, which uses the power battery as a power source only; The step of heating the first electric drive unit until the first electric drive unit exits a low temperature state and heating the power battery includes: 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 heated synchronously.

7. A thermal management control device for a hybrid vehicle, characterized in that: The hybrid vehicle includes an engine, a power battery and a first electric drive unit, the electric energy of the first electric drive unit is obtained from the power generated by the engine through a generator, and the device includes: a command response module, configured to obtain the oil temperature of the first electric drive unit in response to a low-temperature start command of the hybrid vehicle; The heating control module is used to heat the first electric drive unit when it is determined based on the oil temperature that the first electric drive unit is in a preset low-temperature state, until the first electric drive unit exits the low-temperature state.

8. An electronic device, characterized in that: It comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the thermal management control method for a hybrid vehicle according to any one of claims 1 to 7 can be implemented when the processor executes the program.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the thermal management control method for a hybrid vehicle as claimed in any one of claims 1 to 7 is executed.

10. A vehicle, characterized in that: Comprising the electronic device as claimed in claim 8.

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