Shift control method, system, storage medium and electronic device of hybrid vehicle

Abstract

The application provides a shift control method and system of a hybrid vehicle, a storage medium and an electronic device. The method comprises the following steps: acquiring a current wheel edge demand torque and a vehicle speed of the hybrid vehicle, and calculating vehicle speeds in different gears according to the current wheel edge demand torque and the vehicle speed; acquiring engine loss costs, motor loss costs and battery pack loss costs corresponding to different gears in sequence according to the vehicle speeds in different gears, and calculating total cost loss values in different gears according to the engine loss costs, the motor loss costs and the battery pack loss costs; selecting a gear corresponding to an optimal loss value as a target gear according to the total cost loss values in different gears, and switching the gear of the hybrid vehicle to the target gear. The shift control method of the hybrid vehicle can comprehensively evaluate cost losses of the vehicle when different gears are switched, and then the optimal gear is locked for switching, so that the vehicle fuel consumption loss can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle shifting, and in particular to a shifting control method, system, storage medium, and electronic device for a hybrid vehicle. Background Art

[0002] With the development of society, the popularity of cars is getting higher and higher. Automatic transmission cars have the advantages of simple and convenient operation, safety and labor saving, and are becoming more and more popular.

[0003] Among them, automatic transmission cars do not require the driver to manually adjust the gear of the car, but automatically adjust the gear of the car according to the gear shifting strategy in the car. With the implementation of average fuel consumption points and points policies, the fuel consumption status of traditional cars can no longer meet national regulations, and hybrid power is required to meet corporate fuel consumption points requirements.

[0004] However, existing hybrid vehicles only consider two reference criteria when making gear shift decisions: accelerator pedal opening and vehicle speed. This leads to a limited assessment before gear shifting, causing gear switching to be more frequent during actual driving, resulting in increased fuel consumption costs when shifting gears. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to propose a hybrid vehicle shift control method, system, storage medium and electronic device to solve the problem of increased gear switching costs in traditional hybrid vehicles due to limited evaluation when making shift decisions.

[0006] According to the hybrid vehicle shift control method proposed by the present invention, the method includes:

[0007] Obtaining a current wheel-side required torque and vehicle speed of the hybrid vehicle, and calculating a vehicle speed at different gears based on the current wheel-side required torque and the vehicle speed;

[0008] According to the vehicle speed at different gears, the engine loss cost, motor loss cost and battery pack loss cost corresponding to the different gears are obtained in sequence, and the total cost loss value at different gears is calculated based on the engine loss cost, the motor loss cost and the battery pack loss cost;

[0009] An optimal loss value is selected according to the total cost loss values ​​under different gear positions, the gear position corresponding to the optimal loss value is used as the target gear position, and the gear position of the hybrid vehicle is switched to the target gear position.

[0010] In summary, according to the above-mentioned hybrid vehicle shift control method, by accurately calculating the cost loss of each module when switching gears, the total cost loss corresponding to each gear is evaluated, so as to obtain the optimal target gear, so as to replace the problem of increased fuel consumption cost caused by frequent gear shifting by only evaluating the vehicle speed and throttle opening. Specifically, first, the current vehicle speed and wheel-side required torque of the hybrid vehicle are obtained in real time, so as to calculate the vehicle speed at different gears corresponding to the vehicle power demand, and then the engine loss cost, motor loss cost and battery pack loss cost at the corresponding gears are obtained according to the vehicle speed at different gears, and then the total cost loss value of switching to each gear at different gears is calculated. Then, according to the total cost loss value at different gears, the gear with the smallest loss is selected as the target gear, and then the hybrid vehicle is controlled to switch to the target gear. By comprehensively evaluating the loss cost when the vehicle switches gears, the optimal vehicle gear is locked, which is conducive to reducing the vehicle fuel consumption cost.

[0011] Furthermore, after the step of obtaining the current wheel-side required torque and vehicle speed of the hybrid vehicle and calculating the vehicle speed at different gears according to the current wheel-side required torque and the vehicle speed, the step further includes:

[0012] Based on the external characteristic torque of the engine of the hybrid vehicle, the golden section is used to distribute the engine output torque and the motor output torque at different gears, and multiple sets of engine output torque and motor output torque data are allocated to each gear;

[0013] The fuel consumption loss cost under the corresponding gear is calculated based on multiple sets of engine output torque and motor output torque data under each gear.

[0014] Furthermore, the step of sequentially obtaining the engine loss cost, motor loss cost, and battery pack loss cost corresponding to different gears according to the vehicle speed at different gears, and calculating the total cost loss value at different gears according to the engine loss cost, the motor loss cost, and the battery pack loss cost includes:

[0015] Obtain the minimum loss distribution point under the corresponding gear according to the fuel consumption loss cost corresponding to the multiple sets of torque distribution data under each gear;

[0016] The engine efficiency value is obtained according to the engine output torque corresponding to the minimum loss distribution point, and the engine efficiency loss cost is calculated according to the engine efficiency value and the preset maximum efficiency value of the engine.

[0017] Furthermore, the step of sequentially obtaining the engine loss cost, motor loss cost, and battery pack loss cost corresponding to different gears according to the vehicle speed at different gears, and calculating the total cost loss value at different gears based on the engine loss cost, the motor loss cost, and the battery pack loss cost also includes:

[0018] The motor charge and discharge torque is obtained according to the motor output torque corresponding to the minimum loss distribution point, and the motor power generation efficiency is calculated based on the motor charge and discharge torque;

[0019] Calculate the motor power loss cost based on the motor's power generation efficiency.

[0020] Furthermore, the step of sequentially obtaining the engine loss cost, motor loss cost, and battery pack loss cost corresponding to different gears according to the vehicle speed at different gears, and calculating the total cost loss value at different gears based on the engine loss cost, the motor loss cost, and the battery pack loss cost also includes:

[0021] Get the current gear position of the vehicle and determine whether the gear position corresponding to the minimum allocation point is the same as the current gear position of the vehicle;

[0022] If the gear corresponding to the minimum allocation point is different from the current gear of the vehicle, the gear switching cost is obtained according to the preset gear switching coefficient.

[0023] Furthermore, the method further comprises:

[0024] Determine whether the current battery power is lower than a preset power threshold;

[0025] If the current battery power is lower than the preset power threshold, the engine reserve torque is obtained and the power balance loss cost is calculated based on the engine reserve torque.

[0026] Furthermore, multiple sets of engine output torque and motor output torque data allocated under the same gear can all meet the vehicle speed under the corresponding gear.

[0027] According to an embodiment of the present invention, a hybrid vehicle shift control system includes:

[0028] a vehicle speed acquisition module, configured to acquire the current wheel-side required torque and vehicle speed of the hybrid vehicle, and calculate the vehicle speed at different gears based on the current wheel-side required torque and the vehicle speed;

[0029] a cost calculation module, configured to sequentially obtain engine loss costs, motor loss costs, and battery pack loss costs corresponding to different gears according to the vehicle speeds at different gears, and calculate total cost loss values ​​at different gears based on the engine loss costs, the motor loss costs, and the battery pack loss costs;

[0030] The gear switching module is used to select an optimal loss value according to the total cost loss values ​​under different gears, set the gear corresponding to the optimal loss value as the target gear, and switch the gear of the hybrid vehicle to the target gear.

[0031] Another aspect of the present invention provides a storage medium, including one or more programs stored in the storage medium, which implement the hybrid vehicle shift control method as described above when the programs are executed.

[0032] Another aspect of the present invention provides an electronic device, comprising a memory and a processor, wherein:

[0033] The memory is used to store computer programs;

[0034] When the processor is used to execute the computer program stored in the memory, the above-mentioned hybrid vehicle shift control method is implemented.

[0035] Additional aspects and advantages of the present invention will be set forth in part in the following description and, in part, will be obvious from the following description, or may be learned through embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a flow chart of a hybrid vehicle shift control method according to a first embodiment of the present invention;

[0037] Figure 2 This is a flow chart of a hybrid vehicle shift control method according to a second embodiment of the present invention;

[0038] Figure 3 This is a system block diagram of a hybrid vehicle shift control system proposed in the third embodiment of the present invention.

[0039] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0040] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0042] See also Figure 1 , which is a flow chart of a hybrid vehicle shift control method according to a first embodiment of the present invention, the method includes steps S01 to S03, wherein:

[0043] Step S01: obtaining the current wheel-side required torque and vehicle speed of the hybrid vehicle, and calculating the vehicle speed at different gears based on the current wheel-side required torque and the vehicle speed;

[0044] It should be noted that during the actual driving process of a hybrid vehicle, sensors are used to monitor in real time the wheel-side demand torque and the current vehicle speed corresponding to the hybrid vehicle at the current moment, so that the corresponding vehicle speeds under different gears are obtained based on the wheel-side demand torque and the current vehicle speed. That is, the vehicle speeds under different gears all meet the current driving power requirements of the vehicle.

[0045] For example, when the required wheel torque is 1000N.m, the vehicle speeds corresponding to the three gears are 1500, 3000, and 5000rpm respectively.

[0046] Step S02: sequentially obtaining engine loss costs, motor loss costs, and battery pack loss costs corresponding to different gears according to the vehicle speeds at different gears, and calculating total cost loss values ​​at different gears based on the engine loss costs, the motor loss costs, and the battery pack loss costs;

[0047] In this step, the engine loss cost includes engine efficiency loss cost, engine emission cost, and engine NVH cost; the motor loss cost includes power balance cost, motor efficiency loss cost, and gear switching cost. Based on the obtained vehicle speed at different gears, the above costs are evaluated one by one to obtain the total cost loss value at each gear.

[0048] Step S03: selecting an optimal loss value according to the total cost loss values ​​under different gear positions, setting the gear position corresponding to the optimal loss value as a target gear position, and switching the gear position of the hybrid vehicle to the target gear position.

[0049] It should be noted that after obtaining the total cost loss corresponding to each gear, the gear corresponding to the minimum cost loss is selected as the target gear, and then the hybrid vehicle is controlled to switch to the target gear. This is conducive to reducing fuel consumption losses when changing gears and saving costs.

[0050] Furthermore, if the target gear is the same as the current gear of the vehicle, there is no need to change the gear at this time. The gear change will only occur when the target gear is different from the current gear of the vehicle. That is, by monitoring the vehicle speed and wheel-side required torque in real time, the real-time optimal target gear is continuously updated, and the gear shifting strategy is accurately executed.

[0051] In summary, according to the above-mentioned hybrid vehicle shift control method, by accurately calculating the cost loss of each module when switching gears, the total cost loss corresponding to each gear is evaluated, so as to obtain the optimal target gear, so as to replace the problem of increased fuel consumption cost caused by frequent gear shifting by only evaluating the vehicle speed and throttle opening. Specifically, first, the current vehicle speed and wheel-side required torque of the hybrid vehicle are obtained in real time, so as to calculate the vehicle speed at different gears corresponding to the vehicle power demand, and then the engine loss cost, motor loss cost and battery pack loss cost at the corresponding gears are obtained according to the vehicle speed at different gears, and then the total cost loss value of switching to each gear at different gears is calculated. Then, according to the total cost loss value at different gears, the gear with the smallest loss is selected as the target gear, and then the hybrid vehicle is controlled to switch to the target gear. By comprehensively evaluating the loss cost when the vehicle switches gears, the optimal vehicle gear is locked, which is conducive to reducing the vehicle fuel consumption cost.

[0052] See also Figure 2 , which is a flow chart of a hybrid vehicle shift control method according to a second embodiment of the present invention, the method includes steps S11 to S20, wherein:

[0053] Step S11: obtaining the current wheel-side required torque and vehicle speed of the hybrid vehicle, and calculating the vehicle speed at different gears based on the current wheel-side required torque and the vehicle speed;

[0054] Step S12: Based on the external characteristic torque of the engine of the hybrid vehicle, the engine output torque and the motor output torque at different gears are distributed using the golden section, and multiple sets of engine output torque and motor output torque data are allocated to each gear;

[0055] It should be noted that the golden section represents a distribution ratio of 0.618. Under the 0-240 engine external characteristic torque, there will be more points based on the golden section, as shown in the following table:

[0056]

[0057] As can be seen from the table, hybrid vehicles generally have three gears, and different gears can be allocated multiple sets of torque data.

[0058] Step S13: calculating the fuel consumption loss cost at the corresponding gear according to the multiple sets of engine output torque and motor output torque data at each gear;

[0059] Step S14: obtaining the minimum loss distribution point under the corresponding gear according to the fuel consumption loss cost corresponding to the multiple sets of torque distribution data under each gear;

[0060] It can be understood that the required fuel consumption loss cost is calculated based on different engine output torques and motor output torques, so that there will be a distribution point corresponding to the optimal fuel consumption loss under each gear, that is, the minimum loss distribution point, and the engine output torque and motor output torque corresponding to the minimum distribution point are recorded.

[0061] Step S15: obtaining an engine efficiency value according to the engine output torque corresponding to the minimum loss distribution point, and calculating an engine efficiency loss cost according to the engine efficiency value and a preset maximum efficiency value of the engine;

[0062] It should be noted that the engine efficiency loss cost is equal to the engine efficiency value multiplied by the engine efficiency coefficient, and the engine efficiency coefficient needs to be calibrated according to the specific vehicle.

[0063] Step S16: obtaining the motor charge and discharge torque according to the motor output torque corresponding to the minimum loss distribution point, and calculating the motor power generation efficiency according to the motor charge and discharge torque; and calculating the motor power loss cost according to the motor power generation efficiency.

[0064] It should be noted that since the motor output torque is caused by the charging or discharging of the motor, based on this, the torque corresponding to the motor charging and discharging can be directly obtained according to the motor output torque, and then the motor power generation efficiency can be obtained.

[0065] Step S17: Obtain the current gear position of the vehicle and determine whether the gear position corresponding to the minimum allocation point is the same as the current gear position of the vehicle;

[0066] Step S18: If the gear corresponding to the minimum allocation point is different from the current gear of the vehicle, the gear switching cost is obtained according to the preset gear switching coefficient;

[0067] It should be noted that when analyzing the costs under different gears, if the gear is different from the current gear of the vehicle, the gear switching cost needs to be increased accordingly.

[0068] Step S19: If the current battery power is lower than the preset power threshold, the engine reserve torque is obtained, and the power balance loss cost is calculated based on the engine reserve torque;

[0069] It should be noted that before obtaining the power balance loss cost, it is also necessary to determine whether the current battery power is lower than the preset power threshold. If the current battery power is lower than the preset power threshold, it means that the current battery power is in a low state. At this time, in order to maintain power balance, the motor needs to be charged by the engine. Based on this, an engine reserve torque will be obtained, and then the power balance loss cost will be calculated based on the engine reserve torque.

[0070] Step S20: selecting an optimal loss value according to the total cost loss values ​​under different gear positions, setting the gear position corresponding to the optimal loss value as a target gear position, and switching the gear position of the hybrid vehicle to the target gear position.

[0071] By summarizing the various costs obtained above, the total cost loss under each gear is obtained, and then the optimal gear is locked for control, thereby achieving the purpose of reducing fuel consumption loss.

[0072] In summary, according to the above-mentioned hybrid vehicle shift control method, by accurately calculating the cost loss of each module when switching gears, the total cost loss corresponding to each gear is evaluated, so as to obtain the optimal target gear, so as to replace the problem of increased fuel consumption cost caused by frequent gear shifting by only evaluating the vehicle speed and throttle opening. Specifically, first, the current vehicle speed and wheel-side required torque of the hybrid vehicle are obtained in real time, so as to calculate the vehicle speed at different gears corresponding to the vehicle power demand, and then the engine loss cost, motor loss cost and battery pack loss cost at the corresponding gears are obtained according to the vehicle speed at different gears, and then the total cost loss value of switching to each gear at different gears is calculated. Then, according to the total cost loss value at different gears, the gear with the smallest loss is selected as the target gear, and then the hybrid vehicle is controlled to switch to the target gear. By comprehensively evaluating the loss cost when the vehicle switches gears, the optimal vehicle gear is locked, which is conducive to reducing the vehicle fuel consumption cost.

[0073] See also Figure 3 , which is a system block diagram of a hybrid vehicle shift control system in a third embodiment of the present invention, the system includes:

[0074] The vehicle speed acquisition module 10 is used to obtain the current wheel-side required torque and vehicle speed of the hybrid vehicle, and calculate the vehicle speed at different gears based on the current wheel-side required torque and the vehicle speed;

[0075] The cost calculation module 20 is configured to sequentially obtain the engine loss cost, motor loss cost, and battery pack loss cost corresponding to different gears according to the vehicle speed at different gears, and calculate the total cost loss value at different gears based on the engine loss cost, the motor loss cost, and the battery pack loss cost;

[0076] Furthermore, the cost calculation module 20 further includes:

[0077] A distribution screening unit, configured to obtain a minimum loss distribution point under a corresponding gear according to the fuel consumption loss costs corresponding to multiple sets of torque distribution data under each gear;

[0078] The engine efficiency loss cost acquisition unit is used to obtain the engine efficiency value according to the engine output torque corresponding to the minimum loss distribution point, and calculate the engine efficiency loss cost according to the engine efficiency value and the preset maximum efficiency value of the engine.

[0079] a motor power generation efficiency acquisition unit, configured to acquire the motor charge and discharge torque according to the motor output torque corresponding to the minimum loss distribution point, and calculate the motor power generation efficiency according to the motor charge and discharge torque;

[0080] The motor power loss cost acquisition unit is used to calculate the motor power loss cost according to the motor power generation efficiency.

[0081] A gear determination unit, used to obtain the current gear of the vehicle and determine whether the gear corresponding to the minimum distribution point is the same as the current gear of the vehicle;

[0082] The gear switching cost acquisition unit is used to acquire the gear switching cost according to a preset gear switching coefficient if the gear corresponding to the minimum allocation point is different from the current gear of the vehicle.

[0083] A power judgment unit, used to judge whether the current battery power is lower than a preset power threshold;

[0084] The power balance loss cost acquisition unit is used to acquire the engine reserve torque if the current battery power is lower than a preset power threshold, and calculate the power balance loss cost based on the engine reserve torque.

[0085] The gear switching module 30 is used to select an optimal loss value according to the total cost loss values ​​under different gears, set the gear corresponding to the optimal loss value as a target gear, and switch the gear of the hybrid vehicle to the target gear.

[0086] Furthermore, in some optional embodiments of the present invention, the system further includes:

[0087] a distribution module for distributing the engine output torque and the motor output torque at different gears using the golden section based on the external characteristic torque of the engine of the hybrid vehicle, wherein each gear is allocated with multiple sets of engine output torque and motor output torque data;

[0088] The fuel consumption calculation module is used to calculate the fuel consumption loss cost under the corresponding gear according to multiple sets of engine output torque and motor output torque data under each gear.

[0089] In summary, according to the above-mentioned hybrid vehicle shift control system, by accurately calculating the cost loss of each module when switching gears, and then evaluating the total cost loss corresponding to each gear, the optimal target gear is obtained, so as to replace the problem of increased fuel consumption cost caused by frequent gear shifting by only evaluating the vehicle speed and throttle opening. Specifically, first, the current vehicle speed and wheel-side required torque of the hybrid vehicle are obtained in real time, so as to calculate the vehicle speed at different gears corresponding to the vehicle power demand, and then the engine loss cost, motor loss cost and battery pack loss cost at the corresponding gears are obtained according to the vehicle speed at different gears, and then the total cost loss value of switching to each gear at different gears is calculated, and then the gear with the smallest loss is selected as the target gear according to the total cost loss value at different gears, and then the hybrid vehicle is controlled to switch to the target gear. By comprehensively evaluating the loss cost when the vehicle switches gears, the optimal vehicle gear is locked, which is conducive to reducing the vehicle's fuel consumption cost.

[0090] Another aspect of the present invention further provides a storage medium having one or more programs stored thereon, which implement the above-mentioned hybrid vehicle shift control method when executed by a processor.

[0091] Another aspect of the present invention further provides an electronic device comprising a memory and a processor, wherein the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory to implement the above-mentioned hybrid vehicle shift control method.

[0092] Those skilled in the art will appreciate that the logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device), or in conjunction with such instruction execution system, apparatus, or device. For purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transmit a program for use by an instruction execution system, apparatus, or device, or in conjunction with such instruction execution system, apparatus, or device.

[0093] More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic devices), a portable computer disk cartridge (magnetic devices), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering, or processing in another suitable manner as necessary, and then stored in a computer memory.

[0094] It should be understood that various parts of the present invention can be implemented using hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used to implement the hardware: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0095] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0096] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A hybrid vehicle shift control method, characterized in that: The method comprises: Obtaining a current wheel-side required torque and vehicle speed of the hybrid vehicle, and calculating a vehicle speed at different gears based on the current wheel-side required torque and the vehicle speed; According to the vehicle speed at different gears, the engine loss cost, motor loss cost and battery pack loss cost corresponding to different gears are obtained in turn, and the total cost loss value at different gears is calculated based on the engine loss cost, the motor loss cost and the battery pack loss cost, specifically including: Based on the external characteristic torque of the engine of the hybrid vehicle, the golden section is used to distribute the engine output torque and the motor output torque in different gears, and each gear is allocated with multiple sets of engine output torque and motor output torque data. Calculate the fuel consumption loss cost at the corresponding gear based on multiple sets of engine output torque and motor output torque data at each gear. According to the fuel consumption loss cost corresponding to multiple sets of torque distribution data under each gear, the minimum loss distribution point under the corresponding gear is obtained. Obtaining an engine efficiency value based on the engine output torque corresponding to the minimum loss distribution point, and calculating an engine efficiency loss cost based on the engine efficiency value and a preset maximum efficiency value of the engine; Determine whether the current battery power is lower than the preset power threshold, If the current battery power is lower than the preset power threshold, the engine reserve torque is obtained, and the power balance loss cost is calculated based on the engine reserve torque; An optimal loss value is selected according to the total cost loss values ​​under different gear positions, the gear position corresponding to the optimal loss value is used as the target gear position, and the gear position of the hybrid vehicle is switched to the target gear position.

2. The hybrid vehicle shift control method according to claim 1, characterized in that: The step of sequentially obtaining the engine loss cost, motor loss cost, and battery pack loss cost corresponding to different gears according to the vehicle speed at different gears, and calculating the total cost loss value at different gears according to the engine loss cost, the motor loss cost, and the battery pack loss cost also includes: The motor charge and discharge torque is obtained according to the motor output torque corresponding to the minimum loss distribution point, and the motor power generation efficiency is calculated based on the motor charge and discharge torque; Calculate the motor power loss cost based on the motor's power generation efficiency.

3. The hybrid vehicle shift control method according to claim 2, characterized in that: The step of sequentially obtaining the engine loss cost, motor loss cost, and battery pack loss cost corresponding to different gears according to the vehicle speed at different gears, and calculating the total cost loss value at different gears according to the engine loss cost, the motor loss cost, and the battery pack loss cost also includes: Get the current gear position of the vehicle and determine whether the gear position corresponding to the minimum allocation point is the same as the current gear position of the vehicle; If the gear corresponding to the minimum allocation point is different from the current gear of the vehicle, the gear switching cost is obtained according to the preset gear switching coefficient.

4. The hybrid vehicle shift control method according to claim 1, characterized in that: Multiple sets of engine output torque and motor output torque data allocated in the same gear can all meet the vehicle speed in the corresponding gear.

5. A hybrid vehicle shift control system, characterized in that: The system comprises: a vehicle speed acquisition module, configured to acquire the current wheel-side required torque and vehicle speed of the hybrid vehicle, and calculate the vehicle speed at different gears based on the current wheel-side required torque and the vehicle speed; a cost calculation module, configured to sequentially obtain engine loss costs, motor loss costs, and battery pack loss costs corresponding to different gears according to the vehicle speeds at different gears, and calculate total cost loss values ​​at different gears based on the engine loss costs, the motor loss costs, and the battery pack loss costs; The gear switching module is used to select an optimal loss value according to the total cost loss values ​​under different gears, set the gear corresponding to the optimal loss value as the target gear, and switch the gear of the hybrid vehicle to the target gear.

6. A storage medium, characterized in that include: The storage medium stores one or more programs, which, when executed by the processor, implement the hybrid vehicle shift control method according to any one of claims 1 to 4.

7. An electronic device, characterized in that: The electronic device comprises a memory and a processor, wherein: The memory is used to store computer programs; When the processor is used to execute the computer program stored in the memory, the hybrid vehicle shift control method according to any one of claims 1 to 4 is implemented.

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