Control method and device of hybrid power system, readable medium and electronic equipment

Abstract

The embodiment of the invention provides a control method and device of a hybrid power system, a readable medium and electronic equipment. The control method of the hybrid power system comprises the steps that the vehicle speed of a vehicle is obtained; if the vehicle speed is lower than the vehicle speed threshold value, the remaining electric quantity of the vehicle is obtained; if the remaining electric quantity is higher than the electric quantity threshold value, the working state of an engine is adjusted according to the in-vehicle heat management requirement; and if the engine is in the starting state, the generator is controlled to output balance torque so as to reduce the difference value between the output torque of the engine and the load torque. According to the technical scheme, when the engine enters the self-idling working condition, the generator is controlled to output the balance torque, so that the difference value between the output torque of the engine and the load torque is reduced, and the phenomenon of gear knocking noise is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and more specifically, to a control method, device, readable medium and electronic device for a hybrid power system. Background Art

[0002] For hybrid vehicles, due to the low battery capacity, the battery SOC (State of Charge) is easier to reach a full state, and the GCU (Generator Control Unit) has no power generation demand. At this time, if the engine has a forced start demand, the engine will appear in the idle speed condition. The speed fluctuation in this condition will cause the idle gear in the hybrid power system to knock. Summary of the invention

[0003] The embodiments of the present application provide a control method, device, readable medium and electronic device for a hybrid power system, thereby improving the phenomenon of gear knocking noise.

[0004] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0005] According to one aspect of an embodiment of the present application, a control method for a hybrid power system is provided, the method comprising:

[0006] Get the vehicle speed;

[0007] If the vehicle speed is lower than the vehicle speed threshold, obtaining the remaining power of the vehicle;

[0008] If the remaining power is higher than the power threshold, adjusting the working state of the engine according to the thermal management requirements in the vehicle;

[0009] If the engine is in a starting state, the generator is controlled to output a balancing torque to reduce the difference between the engine output torque and the load torque.

[0010] According to one aspect of an embodiment of the present application, a control device for a hybrid power system is provided, the device comprising:

[0011] A first acquisition module, used to acquire the speed of the vehicle;

[0012] A second acquisition module, configured to acquire the remaining power of the vehicle if the vehicle speed is lower than a vehicle speed threshold;

[0013] A first adjustment module, configured to adjust the working state of the engine according to the thermal management requirements in the vehicle if the remaining power is higher than the power threshold;

[0014] The second adjustment module is used to control the generator to output a balancing torque if the engine is in a starting state, so as to reduce the difference between the engine output torque and the load torque.

[0015] In some embodiments of the present application, based on the above technical solution, the first adjustment module is also used to obtain an air-conditioning signal if the remaining power is higher than the power threshold; if the air-conditioning signal is a heating signal, adjust the working state of the engine according to the ambient temperature.

[0016] In some embodiments of the present application, based on the above technical solution, the first adjustment module is also used to obtain the ambient temperature; if the ambient temperature is less than or equal to the temperature threshold, an engine start signal is sent to the engine management system to put the engine in a start state.

[0017] In some embodiments of the present application, based on the above technical solution, the first adjustment module is also used to determine whether PTC power exists if the ambient temperature is greater than the temperature threshold; and adjust the working state of the engine according to the PTC power.

[0018] In some embodiments of the present application, based on the above technical solution, the first adjustment module is also used to, if there is PTC power, send an engine shutdown signal to the engine management system after the PTC heating setting time to put the engine in a shutdown state.

[0019] In some embodiments of the present application, based on the above technical solution, the first adjustment module is also used to send an engine start signal to the engine management system if there is no PTC power, so that the engine is in a start state.

[0020] In some embodiments of the present application, based on the above technical solution, the first adjustment module is also used to send an engine shutdown signal to the engine management system if the air-conditioning signal is a non-heating signal, so that the engine is in a shutdown state.

[0021] In some embodiments of the present application, based on the above technical solution, the first adjustment module is also used to send a control signal to the motor controller to control the generator control unit to be at a set power if the remaining power is higher than the set power.

[0022] In some embodiments of the present application, based on the above technical solution, the second adjustment module is also used to determine whether the catalyst heating conditions are met when the engine is started; if the catalyst heating conditions are met, the engine management system is controlled to perform catalyst heating; after the catalyst heating is completed, the generator is controlled to output a balanced torque.

[0023] In some embodiments of the present application, based on the above technical solution, the second adjustment module is also used to apply positive torque to the generator control unit if the engine is in a starting state to reduce the difference between the engine output torque and the load torque.

[0024] According to one aspect of an embodiment of the present application, a computer-readable medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the control method of the hybrid power system as described in the above embodiment is implemented.

[0025] According to one aspect of an embodiment of the present application, an electronic device is provided, comprising: one or more processors; a storage device for storing one or more computer programs, wherein when the one or more computer programs are executed by the one or more processors, the electronic device implements the control method of the hybrid power system as described in the above embodiments.

[0026] According to one aspect of an embodiment of the present application, a computer program product is provided, the computer program product comprising a computer program, the computer program being stored in a computer-readable storage medium. A processor of an electronic device reads and executes the computer program from the computer-readable storage medium, so that the electronic device executes the control method of the hybrid power system provided in the above-mentioned various optional embodiments.

[0027] In the technical solutions provided in some embodiments of the present application, if the vehicle speed is less than the vehicle speed threshold, it is considered that the current vehicle is in a stationary state. When the vehicle is in a stationary state, it is determined whether the vehicle is in a fully charged state. If it is in a fully charged state, it is considered that no charging is required. Next, it is necessary to further determine whether the engine needs to be started to meet the thermal management requirements. If the engine needs to be started to meet the thermal management requirements, an engine start signal is sent to start the engine. When the engine is in the starting state, the engine enters the self-idling condition. Under this condition, the generator outputs a balancing torque to reduce the difference between the engine output torque and the load torque, thereby improving the torsional vibration of the transmission system. By reducing the speed fluctuation of the transmission system, the gear knocking noise phenomenon is improved, thereby improving the NVH performance of the vehicle under specific conditions.

[0028] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A flow chart of a control method of a hybrid power system according to an embodiment of the present application is shown.

[0030] Figure 2 A flow chart of a control method of a hybrid power system according to an embodiment of the present application is shown.

[0031] Figure 3 A flow chart of a control method of a hybrid power system according to an embodiment of the present application is shown.

[0032] Figure 4 A flow chart of a control method of a hybrid power system according to an embodiment of the present application is shown.

[0033] Figure 5 A flow chart of a control method of a hybrid power system according to an embodiment of the present application is shown.

[0034] Figure 6 A flow chart of a control method of a hybrid power system according to an embodiment of the present application is shown.

[0035] Figure 7 A flow chart of a control method of a hybrid power system according to an embodiment of the present application is shown.

[0036] Figure 8 A block diagram of a control device for a hybrid power system according to an embodiment of the present application is shown.

[0037] Fig. 9 A schematic diagram of the structure of a computer system suitable for implementing an electronic device of an embodiment of the present application is shown. DETAILED DESCRIPTION

[0038] The exemplary embodiments are now described in a more comprehensive manner with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be understood as being limited to these examples; on the contrary, the purpose of providing these embodiments is to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0039] In addition, the features, structures or characteristics described in the present application may be combined in one or more embodiments in any suitable manner. In the following description, there are many specific details so that the embodiments of the present application can be fully understood. However, those skilled in the art will appreciate that when implementing the technical scheme of the present application, all the detailed features in the embodiments may not be needed, one or more specific details may be omitted, or other methods, elements, devices, steps, etc. may be adopted.

[0040] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0041] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0042] It should be noted that the "multiple" mentioned in this article refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0043] It is understandable that in the specific implementation of this application, related data such as target object information is involved. When the above embodiments of this application are applied to specific products or technologies, user permission or consent is required, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions.

[0044] In one embodiment, the method of the present application is applied to a hybrid power system based on a power split transmission. In order to facilitate understanding of the technical solution of the present application, the principle of the power split transmission is explained. For the power split transmission, the transmission has different structures with a sun gear as input and a ring gear as output, and a planetary carrier as input and a ring gear as output. Since there is a certain speed ratio between the sun gear, the planetary gear, and the ring gear, no matter what structure, it will be affected by the speed fluctuation of the input shaft, which is amplified by the speed ratio, so that the ring gear and the output gear and the idle gear will knock. When the power SOC is not full, the engine outputs a certain torque at idle speed, the GCU has a power generation demand, and the GCU is in a negative torque state, which suppresses the torsional vibration fluctuation of the transmission system and is not easy to knock. When the battery SOC is fully charged, the GCU has no power generation demand. At this time, the GCU torque is low, close to 0Nm, and the engine speed fluctuation is affected by the combustion characteristics. It is inevitable. The speed fluctuation of the input shaft is amplified by the speed ratio of the planetary gear, and a certain section of the transmission system has no damping to limit the fluctuation of the transmission system, which will easily cause gear knocking.

[0045] In order to solve the above problems, the present application proposes a control method for a hybrid power system, which includes: obtaining the vehicle speed; if the vehicle speed is lower than a speed threshold, obtaining the remaining power of the vehicle; if the remaining power is higher than the power threshold, adjusting the engine's operating state according to the thermal management requirements in the vehicle; if the engine is in a starting state, controlling the generator to output a balancing torque to reduce the difference between the engine output torque and the load torque.

[0046] In this way, if the vehicle speed is less than the vehicle speed threshold, it is considered that the current vehicle is in a stationary state. When the vehicle is in a stationary state, it is determined whether the vehicle is in a fully charged state. If it is in a fully charged state, it is considered that no charging is required. Next, it is necessary to further determine whether the engine needs to be started to meet the thermal management requirements. If the engine needs to be started to meet the thermal management requirements, an engine start signal is sent to start the engine. When the engine is in the starting state, the engine enters the self-idling condition. Under this condition, the generator outputs a balancing torque to reduce the difference between the engine output torque and the load torque, thereby improving the torsional vibration of the transmission system. By reducing the speed fluctuation of the transmission system, the gear knocking noise phenomenon is improved, thereby improving the vehicle NVH performance under specific conditions.

[0047] The self-idling in this application refers to a state where the engine is started but the output torque is 0.

[0048] The implementation details of the technical solution of the embodiment of the present application are described in detail below:

[0049] Figure 1 A flow chart of a control method of a hybrid power system according to an embodiment of the present application is shown, and the control method of the hybrid power system can be executed by a controller. Figure 1 As shown, the control method of the hybrid power system at least includes S101 to S104, which are described in detail as follows:

[0050] In S101 , the vehicle speed is acquired.

[0051] In some optional embodiments, obtaining the vehicle speed can help determine whether the vehicle is in a stationary state or a moving state.

[0052] In S102, if the vehicle speed is lower than the vehicle speed threshold, the remaining power of the vehicle is obtained.

[0053] In some optional embodiments, the vehicle speed threshold can be set to 3km / h, for example. When the vehicle speed is lower than the vehicle speed threshold, the vehicle is in a stationary state, i.e., an idling state. When the vehicle speed is lower than the vehicle speed threshold, the remaining power (SOC) of the vehicle is obtained to monitor the SOC power state. By mastering the SOC power state, it is helpful to further determine whether the engine enters the self-idling stage, and then control the self-idling control logic to improve the gear knocking problem generated under the self-idling condition.

[0054] When the vehicle speed is higher than the speed threshold, it is considered that the vehicle has a driving demand. If the vehicle speed is higher than the speed threshold, the control logic is exited.

[0055] In S103, if the remaining power is higher than the power threshold, the operating state of the engine is adjusted according to the thermal management requirements in the vehicle.

[0056] In some optional embodiments, the setting of the power threshold can be set to 90%, for example, or it can float within a range around 90%. As long as it is within the allowable error range, the conditions are met. Because in a low temperature environment, the engine needs to be started to meet the requirements of in-vehicle thermal management, the engine cannot be shut down in this case. When the remaining power is higher than the power threshold, it is considered that the power is fully charged. At this time, it may be necessary to start the engine to meet the thermal management requirements. Therefore, the working state of the engine needs to be adjusted according to the thermal management requirements of the vehicle. Among them, the working state of the engine includes engine starting and engine stopping.

[0057] When the remaining power is lower than the power threshold, it means that the battery needs to be charged, the engine will not idle, and the control logic will exit.

[0058] In S104, if the engine is in the starting state, the generator is controlled to output a balancing torque to reduce the difference between the engine output torque and the load torque.

[0059] In some optional embodiments, if the engine is in the starting state, the generator is controlled to output a balancing torque, and by controlling the generator to output a balancing torque, the difference between the engine output torque and the load torque is reduced, thereby improving the torsional vibration of the transmission system. By reducing the speed fluctuation of the transmission system, the gear knocking noise phenomenon is improved.

[0060] Specifically, for controlling the generator output balancing torque, the VCU sends instructions to the I PU (Integrated Power Unit) to apply a certain positive torque to the GCU. The GCU torque can be set to +3Nm. In this way, by applying a certain positive torque to the GCU, the battery can be actively discharged to make the battery SOC lower than the set threshold as soon as possible. In addition, the difference between the engine output torque and the load torque can be reduced to achieve the purpose of reducing the torsional vibration of the transmission system. In addition, the load can be increased to suppress the torsional vibration fluctuation of the transmission system.

[0061] In the technical solutions provided in some embodiments of the present application, if the vehicle speed is less than the vehicle speed threshold, it is considered that the current vehicle is in a stationary state. When the vehicle is in a stationary state, it is determined whether the vehicle is in a fully charged state. If it is in a fully charged state, it is considered that no charging is required. Next, it is necessary to further determine whether the engine needs to be started to meet the thermal management requirements. If the engine needs to be started to meet the thermal management requirements, an engine start signal is sent to start the engine. When the engine is in the starting state, the engine enters the self-idling condition. Under this condition, the generator outputs a balancing torque to reduce the difference between the engine output torque and the load torque, thereby improving the torsional vibration of the transmission system. By reducing the speed fluctuation of the transmission system, the gear knocking noise phenomenon is improved, thereby improving the NVH performance of the vehicle under specific conditions.

[0062] In one embodiment of the present application, see Figure 2 , Figure 2 A flow chart of a control method of a hybrid power system according to an embodiment of the present application is shown. The control method of the hybrid power system includes:

[0063] In S101 , the vehicle speed is acquired.

[0064] In S102, if the vehicle speed is lower than the vehicle speed threshold, the remaining power of the vehicle is obtained.

[0065] The specific processing process and related instructions of S101-S102 can refer to the technical solutions of the aforementioned embodiments and will not be repeated here.

[0066] In S201 , if the remaining power is higher than the power threshold, an air conditioning signal is acquired.

[0067] In some optional embodiments, when the remaining power is higher than the power threshold, the vehicle is considered to be in a fully charged state. The air conditioning signal is obtained to determine whether the in-vehicle thermal management requirements need to be met, and then to determine whether to start the engine. The air conditioning signal includes a heating signal and a non-heating signal. If the air conditioning signal is 1, it is a heating signal, and if the air conditioning signal is 0, it is a non-heating state.

[0068] If the remaining power is higher than the power threshold, a control signal is sent to the motor controller to control the generator control unit to be at a set power.

[0069] In S202, if the air conditioning signal is a heating signal, the working state of the engine is adjusted according to the ambient temperature.

[0070] In some optional embodiments, if the air conditioning signal is an air conditioning signal, it is considered that the thermal management requirement needs to be met, and the working state of the engine needs to be adjusted according to the ambient temperature.

[0071] In S104, if the engine is in the starting state, the generator is controlled to output a balancing torque to reduce the difference between the engine output torque and the load torque.

[0072] The specific processing process and related instructions of this step can refer to the technical solution of the aforementioned embodiment and will not be repeated here.

[0073] In this way, if the remaining power is higher than the battery threshold, the air conditioning signal is obtained, and the air conditioning signal is used to determine whether the thermal management needs of the vehicle need to be met. When the air conditioning signal is a heating signal, it is considered that the thermal management needs need to be met, and at this time, it is necessary to further determine whether the engine needs to be started based on the ambient temperature.

[0074] In one embodiment of the present application, see Figure 3 , Figure 3 A flow chart of a control method of a hybrid power system according to an embodiment of the present application is shown. The control method of the hybrid power system includes:

[0075] In S101 , the vehicle speed is acquired.

[0076] In S102, if the vehicle speed is lower than the vehicle speed threshold, the remaining power of the vehicle is obtained.

[0077] In S201 , if the remaining power is higher than the power threshold, an air conditioning signal is acquired.

[0078] The specific processing process and related instructions of S101-S201 can refer to the technical solutions of the aforementioned embodiments and will not be repeated here.

[0079] In S301, if the air conditioning signal is a heating signal, the ambient temperature is obtained.

[0080] In some optional embodiments, if the air conditioning signal is a heating signal, it is considered that there is a thermal management demand at this time, and then the ambient temperature needs to be obtained to further determine whether the engine needs to be started, that is, to determine whether there is a strong heating demand based on the ambient temperature.

[0081] If the air conditioning signal is not a heating signal, an engine shutdown signal is sent to the engine management system to put the engine in a shutdown state.

[0082] In S302, if the ambient temperature is less than or equal to the temperature threshold, an engine start signal is sent to the engine management system to put the engine in a start state.

[0083] In some optional embodiments, the temperature threshold setting can be set to -15°C, for example. When the ambient temperature is less than or equal to the temperature threshold, it is considered that the temperature is low. In order to meet thermal management requirements, the engine needs to be started. At this time, an engine start signal is sent to the engine management system to start the engine.

[0084] In S104, if the engine is in the starting state, the generator is controlled to output a balancing torque to reduce the difference between the engine output torque and the load torque.

[0085] The specific processing process and related instructions of this step can refer to the technical solution of the aforementioned embodiment and will not be repeated here.

[0086] Thus, when the ambient temperature is less than or equal to the temperature threshold, it is considered that the temperature is low and there is a strong heating demand. In order to meet the thermal management demand, the engine needs to be started, and an engine start signal is sent to the engine management system to start the engine.

[0087] In one embodiment of the present application, see Figure 4 , Figure 4 A flow chart of a control method of a hybrid power system according to an embodiment of the present application is shown. The control method of the hybrid power system includes:

[0088] In S101 , the vehicle speed is acquired.

[0089] In S102, if the vehicle speed is lower than the vehicle speed threshold, the remaining power of the vehicle is obtained.

[0090] In S201 , if the remaining power is higher than the power threshold, an air conditioning signal is acquired.

[0091] In S301, if the air conditioning signal is a heating signal, the ambient temperature is obtained.

[0092] In S302, if the ambient temperature is less than or equal to the temperature threshold, an engine start signal is sent to the engine management system to put the engine in a start state.

[0093] The specific processing process and related instructions of S101-S201 can refer to the technical solutions of the aforementioned embodiments and will not be repeated here.

[0094] In S401, if the ambient temperature is greater than the temperature threshold, it is determined whether PTC power exists.

[0095] In S402, the working state of the engine is adjusted according to the PTC power.

[0096] In some optional embodiments, when the ambient temperature is greater than a temperature threshold, it is determined whether a PTC exists, thereby facilitating thermal management control.

[0097] In S104, if the engine is in the starting state, the generator is controlled to output a balancing torque to reduce the difference between the engine output torque and the load torque.

[0098] The specific processing process and related instructions of this step can refer to the technical solution of the aforementioned embodiment and will not be repeated here.

[0099] In this way, when the ambient temperature is greater than the temperature threshold, it is determined whether PTC exists, which is beneficial for thermal management control.

[0100] In one embodiment of the present application, see Figure 5 , Figure 5 A flow chart of a control method of a hybrid power system according to an embodiment of the present application is shown. The control method of the hybrid power system includes:

[0101] In S101 , the vehicle speed is acquired.

[0102] In S102, if the vehicle speed is lower than the vehicle speed threshold, the remaining power of the vehicle is obtained.

[0103] In S201 , if the remaining power is higher than the power threshold, an air conditioning signal is acquired.

[0104] In S301, if the air conditioning signal is a heating signal, the ambient temperature is obtained.

[0105] In S302, if the ambient temperature is less than or equal to the temperature threshold, an engine start signal is sent to the engine management system to put the engine in a start state.

[0106] In S104, if the engine is in the starting state, the generator is controlled to output a balancing torque to reduce the difference between the engine output torque and the load torque.

[0107] In S401, if the ambient temperature is greater than the temperature threshold, it is determined whether PTC power exists.

[0108] The specific processing process and related instructions of S101-S401 can refer to the technical solutions of the aforementioned embodiments and will not be repeated here.

[0109] In S501, if there is PTC power, after the PTC heating setting time is performed, an engine stop signal is sent to the engine management system to put the engine in a stop state.

[0110] In some optional embodiments, if there is PTC, then directly use PTC to heat, and do not need to start the engine.At this moment, send engine shutdown signal to the engine management system, so that the engine is in shutdown state.

[0111] Like this, if there is PTC, then directly use PTC to carry out heating, and do not need to start the engine.At this moment, send engine shutdown signal to engine management system, so that the engine is in shutdown state.

[0112] In one embodiment of the present application, see Figure 6 , Figure 6 A flow chart of a control method of a hybrid power system according to an embodiment of the present application is shown. The control method of the hybrid power system includes:

[0113] In S101 , the vehicle speed is acquired.

[0114] In S102, if the vehicle speed is lower than the vehicle speed threshold, the remaining power of the vehicle is obtained.

[0115] In S201 , if the remaining power is higher than the power threshold, an air conditioning signal is acquired.

[0116] In S301, if the air conditioning signal is a heating signal, the ambient temperature is obtained.

[0117] In S302, if the ambient temperature is less than or equal to the temperature threshold, an engine start signal is sent to the engine management system to put the engine in a start state.

[0118] In S401, if the ambient temperature is greater than the temperature threshold, it is determined whether there is PTC power;

[0119] In S501, if there is PTC power, after the PTC heating setting time is performed, an engine stop signal is sent to the engine management system to put the engine in a stop state.

[0120] The specific processing process and related instructions of S101-S501 can refer to the technical solutions of the aforementioned embodiments and will not be repeated here.

[0121] In S601 , if there is no PTC power, an engine start signal is sent to the engine management system so that the engine is in a start state.

[0122] In some optional embodiments, if the PTC power is not present, an engine start signal is sent to the engine management system so that the engine is in a start state to meet the thermal management requirements.

[0123] In S104, if the engine is in the starting state, the generator is controlled to output a balancing torque to reduce the difference between the engine output torque and the load torque.

[0124] The specific processing process and related instructions of this step can refer to the technical solution of the aforementioned embodiment and will not be repeated here.

[0125] In this way, if there is no PTC power, an engine start signal is sent to the engine management system so that the engine is in a start state to meet the thermal management requirements.

[0126] In one embodiment of the present application, before controlling the generator to output a balancing torque, the method further includes:

[0127] Determine whether the catalyst heating conditions are met when the engine is started;

[0128] If the catalyst heating conditions are met, the engine management system is controlled to heat the catalyst;

[0129] After the catalyst is heated up, the generator is controlled to output a balancing torque.

[0130] In this way, by judging whether the catalyst heating conditions are met when the engine is started, it is further helpful to judge whether to control the generator to output a balanced torque.

[0131] In order to understand the technical solution of this application as a whole, see Figure 7 , Figure 7 A flow chart of a control method of a hybrid power system according to an embodiment of the present application is shown. The control method of the hybrid power system includes:

[0132] Get the vehicle speed;

[0133] If the vehicle speed is lower than 3km / h, the remaining power of the vehicle is obtained; if the vehicle speed is higher than 3km / h, the control logic is exited;

[0134] If the remaining power is greater than or equal to 90%, the VCU allocates GCU power generation to zero and obtains the air conditioning signal; if the remaining power is less than 90%, the control logic is exited;

[0135] If the air conditioning signal is a heating signal, the ambient temperature is obtained; if the air conditioning signal is a non-heating signal, the VCU sends an engine shutdown signal;

[0136] If the ambient temperature is less than or equal to -15°C, the VCU sends an engine shutdown signal;

[0137] If the ambient temperature is greater than -15°C, determine whether PTC power exists;

[0138] If PTC power exists, the VCU sends an engine shutdown signal after the PTC heating setting time;

[0139] If there is no PTC power, the VCU sends an engine shutdown signal;

[0140] If the engine is in the starting state, determine whether the catalyst heating conditions are met when the engine is started;

[0141] If the catalyst heating conditions are met, the engine management system is controlled to heat the catalyst;

[0142] After the catalyst heating is completed, the engine enters the self-idle control logic, and the VCU sends the GCU+3Nm torque.

[0143] In this way, by optimizing the VCU control strategy, the torque of the GCU is increased, the torsional vibration of the transmission system is reduced, the gear knocking phenomenon of the transmission is improved, and the NVH level of the hybrid vehicle and plug-in hybrid vehicle under self-idling conditions is improved.

[0144] The following describes an embodiment of the device of the present application, which can be used to execute the control method of the hybrid power system in the above embodiment of the present application. For details not disclosed in the embodiment of the device of the present application, please refer to the embodiment of the control method of the hybrid power system in the above embodiment of the present application.

[0145] Figure 8 A block diagram of a control device for a hybrid power system according to an embodiment of the present application is shown.

[0146] Reference Figure 8 As shown, a control device 900 of a hybrid power system according to an embodiment of the present application includes:

[0147] The first acquisition module 801 is used to acquire the speed of the vehicle;

[0148] The second acquisition module 802 is used to acquire the remaining power of the vehicle if the vehicle speed is lower than the vehicle speed threshold;

[0149] The first adjustment module 803 is used to adjust the working state of the engine according to the thermal management requirements in the vehicle if the remaining power is higher than the power threshold;

[0150] The second adjustment module 804 is configured to control the generator to output a balancing torque if the engine is in a starting state, so as to reduce the difference between the engine output torque and the load torque.

[0151] In some embodiments of the present application, based on the above technical solution, the first adjustment module is also used to obtain an air-conditioning signal if the remaining power is higher than the power threshold; if the air-conditioning signal is a heating signal, the engine's operating state is adjusted according to the ambient temperature.

[0152] In some embodiments of the present application, based on the above technical solution, the first adjustment module 803 is also used to obtain the ambient temperature; if the ambient temperature is less than or equal to the temperature threshold, an engine start signal is sent to the engine management system to put the engine in a start state.

[0153] In some embodiments of the present application, based on the above technical solution, the first adjustment module 803 is also used to determine whether PTC power exists if the ambient temperature is greater than the temperature threshold; and adjust the working state of the engine according to the PTC power.

[0154] In some embodiments of the present application, based on the above technical solution, the first adjustment module 803 is also used to, if there is PTC power, send an engine shutdown signal to the engine management system after the PTC heating setting time to put the engine in a shutdown state.

[0155] In some embodiments of the present application, based on the above technical solution, the first adjustment module 803 is also used to send an engine start signal to the engine management system if there is no PTC power, so that the engine is in a start state.

[0156] In some embodiments of the present application, based on the above technical solution, the first adjustment module 803 is also used to send an engine shutdown signal to the engine management system if the air-conditioning signal is a non-heating signal, so that the engine is in a shutdown state.

[0157] In some embodiments of the present application, based on the above technical solution, the first adjustment module 803 is also used to send a control signal to the motor controller to control the generator control unit to be at a set power if the remaining power is higher than the set power.

[0158] In some embodiments of the present application, based on the above technical solution, the second adjustment module 804 is also used to determine whether the catalyst heating conditions are met when the engine is started; if the catalyst heating conditions are met, the engine management system is controlled to perform catalyst heating; after the catalyst heating is completed, the generator is controlled to output a balanced torque.

[0159] In some embodiments of the present application, based on the above technical solution, the second adjustment module 804 is also used to apply positive torque to the generator control unit if the engine is in the starting state to reduce the difference between the engine output torque and the load torque.

[0160] In some embodiments of the present application, based on the above technical solution, the device also includes a control module, which is used to exit the control logic if the vehicle speed is lower than the vehicle speed threshold.

[0161] In some embodiments of the present application, based on the above technical solution, the control module is also used to exit the control logic if the remaining power is higher than the power threshold.

[0162] Fig. 9 A schematic diagram of the structure of a computer system suitable for implementing an electronic device of an embodiment of the present application is shown.

[0163] It should be noted that Fig. 9 The computer system 900 of the electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0164] like Fig. 9As shown, the computer system 900 includes a central processing unit (CPU) 901, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 902 or the program loaded from the storage part 908 to the random access memory (RAM) 903, such as executing the method in the above embodiment. In the RAM 903, various programs and data required for system operation are also stored. The CPU 901, ROM 902 and RAM 903 are connected to each other through a bus 904. An input / output (I / O) interface 905 is also connected to the bus 904.

[0165] The following components are connected to the I / O interface 905: an input section 906 including a keyboard, a mouse, etc.; an output section 907 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage section 908 including a hard disk, etc.; and a communication section 909 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 909 performs communication processing via a network such as the Internet. A drive 910 is also connected to the I / O interface 905 as needed. A removable medium 911, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 910 as needed so that a computer program read therefrom is installed into the storage section 908 as needed.

[0166] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 909, and / or installed from a removable medium 911. When the computer program is executed by a central processing unit (CPU) 901, various functions defined in the system of the present application are executed.

[0167] It should be noted that the computer-readable medium shown in the embodiment of the present application may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, - but not limited to - an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by an instruction execution system, device or device or used in combination with it. In the present application, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, wherein a computer-readable computer program is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which may send, propagate, or transmit programs for use by or in conjunction with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0168] The flowchart and block diagram in the accompanying drawings illustrate the possible architecture, functions and operations of the system, method and computer program product according to various embodiments of the present application. Wherein, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for realizing 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 boxes represented in succession 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 or flowchart, and the combination of the boxes in the block diagram or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and a computer program.

[0169] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. The names of these units do not, in some cases, constitute limitations on the units themselves.

[0170] As another aspect, the present application also provides a computer-readable medium, which may be included in the electronic device described in the above embodiment; or may exist independently without being assembled into the electronic device. The above computer-readable medium carries one or more computer programs, and when the above one or more computer programs are executed by an electronic device, the electronic device implements the method in the above embodiment.

[0171] It should be noted that, although several modules or units of the equipment for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiments of the present application, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into being embodied by multiple modules or units.

[0172] Through the description of the above implementation methods, it is easy for those skilled in the art to understand that the example implementation methods described here can be implemented by software or by combining software with necessary hardware. Therefore, the technical solution according to the implementation methods of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the implementation methods of the present application.

[0173] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the art that are not disclosed in the present application.

[0174] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A control method for a hybrid power system, characterized in that: The method comprises: Get the vehicle speed; If the vehicle speed is lower than the vehicle speed threshold, obtaining the remaining power of the vehicle; If the remaining power is higher than the power threshold, adjusting the working state of the engine according to the thermal management requirements in the vehicle; If the engine is in a starting state, the generator is controlled to output a balancing torque to reduce the difference between the engine output torque and the load torque.

2. The control method of the hybrid power system according to claim 1, characterized in that: If the remaining power is higher than the power threshold, the engine operating state is adjusted according to the in-vehicle thermal management requirements, including: If the remaining power is higher than the power threshold, obtaining an air conditioning signal; If the air conditioning signal is a heating signal, the working state of the engine is adjusted according to the ambient temperature.

3. The control method of the hybrid power system according to claim 2, characterized in that: If the air conditioning signal is a heating signal, adjusting the working state of the engine according to the ambient temperature includes: Get the ambient temperature; If the ambient temperature is less than or equal to the temperature threshold, an engine start signal is sent to the engine management system to put the engine in a start state.

4. The control method of the hybrid power system according to claim 3, characterized in that: The method further comprises: If the ambient temperature is greater than the temperature threshold, determining whether PTC power exists; The operating state of the engine is adjusted according to the PTC power.

5. The control method of the hybrid power system according to claim 4, characterized in that: Adjusting the working state of the engine according to the PTC power includes: If there is PTC power, after the PTC heating setting time is performed, an engine shutdown signal is sent to the engine management system to put the engine in a shutdown state.

6. The control method of the hybrid power system according to claim 5, characterized in that: Adjusting the working state of the engine according to the PTC power includes: If the PTC power is not present, an engine start signal is sent to the engine management system so that the engine is in a start state.

7. The control method of the hybrid power system according to claim 2, characterized in that: The method further comprises: If the air-conditioning signal is a non-heating signal, an engine shutdown signal is sent to the engine management system to put the engine in a shutdown state.

8. The control method of the hybrid power system according to claim 2, characterized in that: Before acquiring the air conditioning signal, the method further includes: If the remaining power is higher than the set power, a control signal is sent to the motor controller to control the generator control unit to be at the set power.

9. The control method of the hybrid power system according to claim 1, characterized in that: Before controlling the generator to output a balancing torque, the method further includes: determining whether a catalyst heating condition is met when the engine is started; If the catalyst heating condition is met, controlling the engine management system to heat the catalyst; After the catalyst is heated up, the generator is controlled to output a balancing torque.

10. The control method of the hybrid power system according to claim 1, characterized in that: If the engine is in a starting state, controlling the generator to output a balancing torque to reduce the difference between the engine output torque and the load torque includes: If the engine is in a starting state, a positive torque is applied to a generator control unit to reduce a difference between the engine output torque and the load torque.

11. A control device for a hybrid power system, characterized in that: The device comprises: A first acquisition module, used to acquire the speed of the vehicle; A second acquisition module, configured to acquire the remaining power of the vehicle if the vehicle speed is lower than a vehicle speed threshold; A first adjustment module, configured to adjust the working state of the engine according to the in-vehicle thermal management requirements if the remaining power is higher than a power threshold; The second adjustment module is used for controlling the generator to output a balancing torque if the engine is in a starting state, so as to reduce the difference between the engine output torque and the load torque.

12. A computer readable medium, characterized in that The computer readable medium stores a computer program, which, when executed by a processor, implements the control method of the hybrid power system according to any one of claims 1 to 10.

13. An electronic device, characterized in that: include: processor; as well as A memory, configured to store executable instructions of the processor; Wherein, the processor is configured to execute the control method of the hybrid power system according to any one of claims 1 to 10 by executing the executable instructions.

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