A p2 hybrid architecture motor battery fault control method and system

Abstract

The application relates to the field of automobile control and discloses a P2 hybrid architecture motor battery fault control method and system, which controls the recovery of the whole vehicle circuit to a steady state when a motor battery fault occurs, ensures that the vehicle is in a state operable by the driver, avoids the difficulty of the driver in performing a safe avoidance behavior when the vehicle suddenly loses power, controls the vehicle speed and the engine and motor rotating speed, avoids further damage to the vehicle motor system, provides the vehicle with basic power for self-help and escape, enables the vehicle to go to a repair aid by itself, prevents the battery from being further damaged due to low temperature, improves the self-help success rate in a complex scene, and improves the self-help success rate and driving safety of the P2 hybrid architecture motor battery fault.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile control, in particular to a P2 hybrid architecture motor battery fault control method and system. BACKGROUND

[0002] With the rapid development of the automobile industry, new energy vehicles have gradually become one of the mainstream choices of the consumer group, among them, especially hybrid vehicles, the traditional fuel vehicle power chain composition includes engine, clutch, gearbox, and the existing mainstream hybrid vehicle is to increase the power motor between the clutch and the gearbox on the basis of the traditional fuel vehicle power chain, that is, to form a P2 architecture hybrid vehicle, and the safety performance of the power motor in the power system of the P2 hybrid vehicle is one of the most important indicators.

[0003] In the prior art, when the motor in the P2 architecture fails and has to rely on the engine to drive, the excessively high speed will cause significant motor back electromotive force, and then make the motor enter the active short-circuit braking state, which will stop the rotation of the motor, thereby preventing the vehicle from continuing to drive, which not only brings great inconvenience to the vehicle owner, but also may cause safety hazards, so that the vehicle may suddenly lose power, and in extremely cold environments (such as below minus 30 degrees Celsius) or battery pack failure, the vehicle cannot be powered on high voltage, since the P2 motor is an excitation motor, without the power supply of the high-voltage power supply, it cannot work normally, and in the case that the 12V battery has no separate motor to generate electricity, the power will be quickly consumed, eventually leading to the vehicle stranded during driving, causing great inconvenience to the user, and the existing control method for dealing with motor battery failure usually has a single component market demand, a single price and a high R&D cost, and has no low-temperature battery pack wake-up function, resulting in weak self-help ability.

[0004] Therefore, how to design a P2 hybrid architecture motor battery fault control method to improve the safety of driving has become a problem to be solved. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a P2 hybrid architecture motor battery fault control method and system, which controls the recovery of the vehicle circuit to a steady state when the motor battery fails, ensures that the vehicle is in a state that can be operated by the driver, to avoid the driver's difficulty in performing a safe avoidance behavior when the vehicle suddenly loses power, and controls the vehicle speed and the engine and motor speed to avoid further damage to the vehicle motor system, while giving the vehicle basic power to self-help and escape, and can go to repair assistance on its own, and taking into account the influence of different regions and different seasons, preventing the battery from being further damaged due to low temperature, improving the self-help success rate in complex situations, and improving the self-help success rate and driving safety of the P2 hybrid architecture motor battery failure.

[0006] The application provides a motor battery fault control method of a P2 hybrid architecture, which comprises the following steps:

[0007] Obtaining a driving state of a current vehicle, performing vehicle fault detection according to the driving state, and obtaining fault information of the current vehicle;

[0008] Judging a fault type according to the fault information, and performing high-low voltage self-detection to start a stable voltage generation state if it is determined that the current vehicle is in a battery fault state;

[0009] Limiting a maximum vehicle speed of the vehicle according to a preset fault speed limiting threshold, and performing battery temperature preservation processing to complete fault self-rescue.

[0010] According to the motor battery fault control method of the P2 hybrid architecture, when the motor battery fails, the vehicle circuit is controlled to recover to a stable state, so that the vehicle is in a state that can be operated by the driver, the driver can avoid danger when the vehicle suddenly loses power, the speed of the vehicle and the rotation speed of the engine and the motor are controlled, further damage to the motor system of the vehicle is avoided, the vehicle is given basic power to self-rescue and escape, the vehicle can go to a repair aid by itself, and the influence of different regions and different seasons is considered, further damage of the battery caused by low temperature is prevented, the self-rescue success rate of the motor battery fault of the P2 hybrid architecture is improved, and the driving safety is improved. Specifically, the driving state of the current vehicle is obtained, vehicle fault detection is performed according to the driving state, the fault information of the current vehicle is obtained, different fault detection operations are performed according to the driving or static driving state of the vehicle to locate the fault cause and the fault position, the fault type is judged according to the fault information, high-low voltage self-detection is performed to start a stable voltage generation state if it is determined that the current vehicle is in a battery fault state, the vehicle is in a motor or battery fault state according to different fault information to perform targeted safety control operations, the maximum vehicle speed of the vehicle is limited according to a preset fault speed limiting threshold, and battery temperature preservation processing is performed to complete fault self-rescue. The vehicle performance is limited in a safe range, the driver is given basic power and operability, and further safety protection is performed according to the complex environment, the self-rescue success rate of the motor battery fault of the P2 hybrid architecture is improved, and the driving safety is improved.

[0011] Further, the step of obtaining the driving state of the current vehicle and performing vehicle fault detection according to the driving state to obtain the fault information of the current vehicle specifically comprises the following steps:

[0012] Detecting a driving speed of the current vehicle;

[0013] Judging the driving state of the current vehicle according to a preset static vehicle speed threshold.

[0014] If the driving speed of the current vehicle is less than or equal to the preset static vehicle speed threshold, it is determined that the driving state of the current vehicle is static state;

[0015] If the driving speed of the current vehicle is greater than the preset static vehicle speed threshold, it is determined that the driving state of the current vehicle is driving state;

[0016] Vehicle fault detection is performed according to the driving state;

[0017] If the current vehicle is in static state, the power supply is adjusted to ON mode, high voltage is powered on, and vehicle fault detection is performed to obtain fault information;

[0018] If the current vehicle is in driving state, real-time cyclic fault self-checking is performed on the P2 motor of the current vehicle to obtain fault information;

[0019] According to the fault reason and fault position in the fault information, the instrument fault light is awakened and the fault feedback text is displayed.

[0020] Further, the step of judging the fault type according to the fault information specifically includes:

[0021] After obtaining the fault information, the fault reason and fault position are located;

[0022] If it is determined that the current vehicle is in motor fault state, motor fault handling is performed according to the driving state;

[0023] If it is determined that the current vehicle is in battery fault state, battery fault handling is performed according to the driving state.

[0024] Further, the step of performing motor fault handling according to the driving state if it is determined that the current vehicle is in motor fault state specifically includes:

[0025] When it is detected that the current vehicle is in motor fault state and the driving state is in static state, the hybrid controller controls the starter to perform engine starting operation;

[0026] The motor controller sets the speed bias according to the preset active short-circuit critical speed threshold, controls the opening degree of the throttle intake oil injection port of the engine, so that the maximum speed value of the engine is kept lower than the preset bias speed value;

[0027] The vehicle driving speed is further controlled to be lower than the preset fault speed limit threshold according to the preset bias speed value.

[0028] Further, the step of performing motor fault handling according to the driving state if it is determined that the current vehicle is in motor fault state further includes:

[0029] When it is detected that the current vehicle is in the motor fault state and the driving state is in the driving state, the motor controller performs continuous motor rotor speed detection;

[0030] It is judged whether the motor rotor speed is greater than the preset active short circuit critical speed threshold value;

[0031] If it is determined that the motor rotor speed is greater than the preset active short circuit critical speed threshold value, the P2 motor is controlled to enter the active short circuit braking state, so that the motor rotor is continuously decelerated to the preset active short circuit critical speed threshold value;

[0032] If it is determined that the motor rotor speed is not greater than the preset active short circuit critical speed threshold value, the hybrid controller controls the starter to perform engine restart operation, the motor controller sets the speed offset according to the preset active short circuit critical speed threshold value, controls the opening degree of the throttle intake oil injection port of the engine to keep the maximum speed value of the engine lower than the preset offset speed value, and sends a feedback signal to the transmission controller;

[0033] The transmission controller performs upshift maximum speed limitation according to the feedback signal to control the vehicle driving speed to be lower than the preset fault speed threshold value.

[0034] Further, if it is determined that the current vehicle is in the battery fault state, the battery fault treatment steps are performed according to the driving state, specifically including:

[0035] When it is detected that the current vehicle is in the battery fault state and the driving state is in the driving state, the hybrid controller controls the engine speed to the preset steady state speed value within a first preset time, so that the P2 motor enters the steady voltage generation state;

[0036] According to the preset steady state speed value, the vehicle driving speed is controlled to be lower than the preset fault speed threshold value.

[0037] Further, if it is determined that the current vehicle is in the battery fault state, the battery fault treatment steps are performed according to the driving state, further including:

[0038] When it is detected that the current vehicle is in the battery fault state and the driving state is in the static state, the hybrid controller controls the 12V low-voltage power supply booster module to supply power to the motor controller to perform high-low voltage self-detection on the P2 motor;

[0039] After the self-detection is completed, the hybrid controller controls the 12V low-voltage power supply booster module to stop supplying power to the motor controller, and controls the starter to start the engine, so that the P2 motor enters the steady voltage generation state;

[0040] The vehicle driving speed is kept lower than the preset fault speed threshold value;

[0041] The hybrid controller controls a 12V low-voltage power supply boost module to supply power to a high-voltage power distribution controller, and the high-voltage power distribution controller supplies power to a PTC heating module to heat the battery until the internal temperature of the battery is detected to be within a preset normal working threshold range of the battery, and then the power supply and heating are stopped.

[0042] The P2 hybrid architecture motor battery fault control system provided by the application comprises:

[0043] A fault detection module is configured to acquire a driving state of the current vehicle, perform vehicle fault detection according to the driving state, and acquire fault information of the current vehicle.

[0044] A fault self-help module is configured to determine a fault type according to the fault information, and if it is determined that the current vehicle is in a battery fault state, perform high-low voltage self-detection to start a voltage stabilizing power generation state.

[0045] A steady state maintaining module is configured to limit the maximum vehicle speed of the vehicle according to a preset fault speed limiting threshold, and perform battery temperature maintaining processing to complete fault self-help.

[0046] The application further provides a storage medium storing one or more programs, and the programs are executed by a processor to implement the P2 hybrid architecture motor battery fault control method.

[0047] The application further provides a computer device comprising a memory and a processor, wherein:

[0048] The memory is configured to store a computer program.

[0049] The processor is configured to execute the computer program stored in the memory to implement the P2 hybrid architecture motor battery fault control method. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 A flow chart of the P2 hybrid architecture motor battery fault control method for the first embodiment of the application is shown in the figure.

[0051] Figure 2 A flow chart of the P2 hybrid architecture motor battery fault control method for the second embodiment of the application is shown in the figure.

[0052] Figure 3 A structure schematic diagram of the P2 hybrid architecture motor battery fault control system for the third embodiment of the application is shown in the figure.

[0053] The following specific embodiments will further illustrate the application in combination with the above figures. DETAILED DESCRIPTION

[0054] For the purpose of promoting an understanding of the application, the application will be described in greater detail for illustrative embodiments. In the drawings, several embodiments of the application are shown. It should be noted, however, that the application can be practiced in many different forms and should not be considered limited to the embodiments set forth in the following description. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It is therefore an object of the present application to provide a new and improved method and system that overcomes the above-discussed and other disadvantages of the prior art. An object of the present application is to provide a method and system that is relatively simple, inexpensive, and effective in use.

[0055] It should be noted that when an element as a "set" in another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0057] Referring to Figure 1 , a flow chart of a P2 hybrid architecture motor battery fault control method according to the first embodiment of the present application is shown. The P2 hybrid architecture motor battery fault control method includes steps S01 to S03, wherein:

[0058] Step S01: Obtain the driving state of the current vehicle, and perform vehicle fault detection according to the driving state to obtain the fault information of the current vehicle;

[0059] It should be noted that in the present embodiment, the driving speed of the current vehicle is detected;

[0060] The driving state of the current vehicle is determined according to a preset static vehicle speed threshold;

[0061] If the driving speed of the current vehicle is less than or equal to the preset static vehicle speed threshold, it is determined that the driving state of the current vehicle is static state;

[0062] If the driving speed of the current vehicle is greater than the preset static vehicle speed threshold, it is determined that the driving state of the current vehicle is driving state;

[0063] Vehicle fault detection is performed according to the driving state;

[0064] If the current vehicle is in static state, the power supply is adjusted to ON mode, high voltage is powered on, and vehicle fault detection is performed to obtain fault information;

[0065] If the current vehicle is in a driving state, the P2 motor of the current vehicle is subjected to real-time cyclic fault self-checking to obtain fault information;

[0066] According to the fault cause and fault position in the fault information, the instrument fault light is awakened and fault feedback text is displayed.

[0067] Step S02: According to the fault information, the fault type is judged. If it is determined that the current vehicle is in a battery fault state, high and low voltage self-checking is performed to start the voltage stabilizing power generation state;

[0068] It should be noted that in the embodiment, after the fault information is obtained, the fault cause and fault position are located;

[0069] If it is determined that the current vehicle is in a motor fault state, motor fault processing is performed according to the driving state;

[0070] If it is determined that the current vehicle is in a battery fault state, battery fault processing is performed according to the driving state;

[0071] In the embodiment, when it is detected that the current vehicle is in a motor fault state and the driving state is in a static state, the hybrid power controller controls the starter to perform engine starting operation;

[0072] The motor controller sets the speed bias according to the preset active short-circuit critical speed threshold, controls the opening degree of the throttle air inlet oil injection port of the engine, so that the maximum speed value of the engine is lower than the preset bias speed value;

[0073] And according to the preset bias speed value, the vehicle driving speed is controlled to be lower than the preset fault speed threshold;

[0074] In the embodiment, when it is detected that the current vehicle is in a motor fault state and the driving state is in a driving state, the motor controller performs continuous motor rotor speed detection;

[0075] It is judged whether the motor rotor speed is greater than the preset active short-circuit critical speed threshold;

[0076] If it is determined that the motor rotor speed is greater than the preset active short-circuit critical speed threshold, the P2 motor is controlled to enter the active short-circuit braking state, so that the motor rotor is continuously decelerated to the preset active short-circuit critical speed threshold;

[0077] If it is determined that the motor rotor speed is not greater than the preset active short-circuit critical speed threshold, the hybrid power controller controls the starter to perform engine restart operation, the motor controller sets the speed bias according to the preset active short-circuit critical speed threshold, controls the opening degree of the throttle air inlet oil injection port of the engine, so that the maximum speed value of the engine is lower than the preset bias speed value, and sends a feedback signal to the transmission controller;

[0078] The gearbox controller performs upshift maximum speed limitation according to the feedback signal to control the vehicle speed to be lower than the preset fault speed threshold;

[0079] In the embodiment, when the current vehicle is detected to be in the battery fault state and the running state is in the running state, the hybrid controller controls the engine speed to the preset steady state speed value within the first preset time, so that the P2 motor enters the steady voltage generating state;

[0080] According to the preset steady state speed value, the vehicle speed is controlled to be lower than the preset fault speed threshold.

[0081] Step S03: limiting the maximum vehicle speed according to the preset fault speed threshold, and performing battery temperature maintenance processing to complete the fault self-help;

[0082] It should be noted that in the embodiment, when the current vehicle is detected to be in the battery fault state and the running state is in the static state, the hybrid controller controls the 12V low-voltage power supply booster module to supply power to the motor controller, so as to perform high-low voltage self-detection on the P2 motor;

[0083] After the self-detection is completed, the hybrid controller controls the 12V low-voltage power supply booster module to stop supplying power to the motor controller, and controls the starter to start the engine, so that the P2 motor enters the steady voltage generating state;

[0084] The vehicle speed is kept lower than the preset fault speed threshold;

[0085] The hybrid controller controls the 12V low-voltage power supply booster module to supply power to the high-voltage power distribution controller, and the high-voltage power distribution controller supplies power to the PTC heating module to heat the battery, until the internal temperature of the battery is detected to be in the preset battery normal working threshold range, and then the power supply and heating are stopped.

[0086] In summary, according to the motor battery fault control method of the P2 hybrid architecture described above, when the motor battery fails, the vehicle circuit is controlled to recover to a steady state, ensuring that the vehicle is in a state that can be operated by the driver, to avoid the driver's difficulty in performing safe avoidance behavior when the vehicle suddenly loses power, and to control the vehicle speed and engine and motor speed to avoid further damage to the vehicle motor system, while giving the vehicle basic power to self-rescue and escape, and to prevent the battery from being further damaged by low temperature, improve the self-rescue success rate in complex situations, and improve the self-rescue success rate and driving safety of the P2 hybrid architecture motor battery fault. Specifically, the driving state of the current vehicle is obtained, the vehicle fault is detected according to the driving state, the fault information of the current vehicle is obtained, different fault detection operations are performed according to the driving or static driving state of the vehicle, the fault cause and fault position are located, the fault type is judged according to the fault information, if it is determined that the current vehicle is in a battery fault state, high and low voltage self-detection is performed to start the voltage stabilizing generation state, the vehicle is in a motor or battery fault state according to different fault information, and targeted safety control operation is performed, the highest vehicle speed limit is performed on the vehicle according to the preset fault speed threshold, and the battery is treated to complete the fault self-rescue, the vehicle performance is limited to a safe range while giving the driver basic power and operability, and further safety protection is performed according to the complex environment, thereby improving the self-rescue success rate and driving safety of the P2 hybrid architecture motor battery fault.

[0087] Referring to Figure 2 , it is a flow chart of the P2 hybrid architecture motor battery fault control method according to the second embodiment of the present application. The P2 hybrid architecture motor battery fault control method includes steps S11 to S16, wherein:

[0088] Step S11: detecting the driving speed of the current vehicle, judging the driving state of the current vehicle according to the preset static speed threshold, if the driving speed of the current vehicle is less than or equal to the preset static speed threshold, determining that the driving state of the current vehicle is static, if the driving speed of the current vehicle is greater than the preset static speed threshold, determining that the driving state of the current vehicle is driving, detecting the vehicle fault according to the driving state, if the current vehicle is in static state, adjusting the power supply to ON mode, performing high voltage power-on to detect the vehicle fault, obtaining fault information, if the current vehicle is in driving state, performing real-time cycle fault self-detection on the P2 motor of the current vehicle to obtain fault information, according to the fault cause and fault position in the fault information, waking up the instrument fault light and displaying the fault feedback text;

[0089] It should be noted that the preset static vehicle speed threshold in the embodiment is 5 km / h, so as to determine whether the vehicle is in a static state or a running state.

[0090] Step S12: After obtaining the fault information, the fault cause and the fault position are located. If it is determined that the current vehicle is in a motor fault state, motor fault processing is performed according to the running state. If it is determined that the current vehicle is in a battery fault state, battery fault processing is performed according to the running state.

[0091] Step S13: When it is detected that the current vehicle is in a motor fault state and the running state is in a static state, the hybrid controller controls the starter to perform engine starting operation, the motor controller sets the speed bias according to the preset active short-circuit critical speed threshold, controls the opening degree of the oil inlet of the engine to keep the maximum speed of the engine below the preset bias speed value, and controls the vehicle speed below the preset fault speed threshold according to the preset bias speed value.

[0092] It should be noted that the preset active short-circuit critical speed threshold in the embodiment is the lowest motor speed at which the vehicle active short-circuit braking state is triggered, so the motor speed is limited in a range that will not trigger the vehicle active short-circuit braking state, that is, the preset bias speed value in the embodiment is 80% of the lowest motor speed at which the vehicle active short-circuit braking state is triggered, so as to avoid triggering the active short-circuit braking state to the greatest extent, while giving the vehicle maximum power and maneuverability, and realizing control of the vehicle speed below the preset fault speed threshold. The preset fault speed threshold in the embodiment is 50 km / h.

[0093] Step S14: When it is detected that the current vehicle is in a motor fault state and the running state is in a running state, the motor controller detects the motor rotor speed continuously, judges whether the motor rotor speed is greater than the preset active short-circuit critical speed threshold, if it is determined that the motor rotor speed is greater than the preset active short-circuit critical speed threshold, the P2 motor enters the active short-circuit braking state to make the motor rotor continuously decelerate to the preset active short-circuit critical speed threshold, if it is determined that the motor rotor speed is not greater than the preset active short-circuit critical speed threshold, the hybrid controller controls the starter to perform engine restart operation, the motor controller sets the speed bias according to the preset active short-circuit critical speed threshold, controls the opening degree of the oil inlet of the engine to keep the maximum speed of the engine below the preset bias speed value, and sends a feedback signal to the gearbox controller, the gearbox controller performs upshift maximum speed limitation according to the feedback signal to control the vehicle speed below the preset fault speed threshold.

[0094] Step S15: When it is detected that the current vehicle is in the battery fault state and the running state is in the running state, the hybrid controller controls the engine speed to a preset steady state speed value within a first preset time, so that the P2 motor enters a steady voltage power generation state. According to the preset steady state speed value, the vehicle running speed is controlled to be lower than a preset fault speed threshold value;

[0095] It should be noted that in the embodiment, when the vehicle is in the running state, self-rescue processing needs to be performed within the first preset time when the battery fails, so as to avoid further damage, and at the same time, the power and maneuverability of the vehicle are recovered as soon as possible, and safety accidents that may occur due to loss of power are avoided. The first preset time in the embodiment is 5 seconds. The steady voltage power generation state in the embodiment is an intermediate state that does not enter the active short circuit braking state and does not enter the battery continuous power loss state. The preset steady state speed value in the embodiment is the intermediate value of the motor speed value that triggers the active short circuit braking state and the motor speed value that triggers the battery continuous power loss state.

[0096] Step S16: When it is detected that the current vehicle is in the battery fault state and the running state is in the static state, the hybrid controller controls the 12V low-voltage power supply booster module to supply power to the motor controller, so as to perform high-low voltage self-detection on the P2 motor. After the self-detection is completed, the hybrid controller controls the 12V low-voltage power supply booster module to stop supplying power to the motor controller, and controls the starter to start the engine, so that the P2 motor enters the steady voltage power generation state, and the vehicle running speed is kept lower than the preset fault speed threshold value. The hybrid controller controls the 12V low-voltage power supply booster module to supply power to the high-voltage power distribution controller, and the high-voltage power distribution controller supplies power to the PTC heating module to heat the battery. When it is detected that the internal temperature of the battery is within a preset battery normal working threshold range, the power supply and heating are stopped.

[0097] It should be noted that in the embodiment, in order to ensure that the vehicle battery does not further lose power due to complex environmental factors after failure, the internal temperature of the battery is kept within a preset battery normal working threshold range, wherein the minimum threshold value of the preset battery normal working threshold range is the battery rated working temperature threshold value, and the maximum threshold value of the preset battery normal working threshold range is the battery overheat temperature threshold value.

[0098] In summary, according to the motor battery fault control method of the P2 hybrid architecture described above, when the motor battery fails, the vehicle circuit is controlled to recover to a steady state, ensuring that the vehicle is in a state that can be operated by the driver, so as to avoid the driver's difficulty in performing a safe avoidance behavior when the vehicle suddenly loses power, and the vehicle speed and engine and motor speed are controlled to avoid further damage to the vehicle motor system, while giving the vehicle basic power to self-rescue and escape, and the vehicle can go to repair assistance on its own, and considering the influence of different regions and seasons, preventing the battery from being further damaged due to low temperature, improving the self-rescue success rate in complex situations, and improving the self-rescue success rate and driving safety of the P2 hybrid architecture motor battery fault. Specifically, the driving state of the current vehicle is obtained, the vehicle fault is detected according to the driving state, the fault information of the current vehicle is obtained, different fault detection operations are performed according to the driving or static driving state of the vehicle, the fault cause and fault position are located, the fault type is judged according to the fault information, if it is determined that the current vehicle is in a battery fault state, high and low voltage self-detection is performed to start the voltage stabilizing power generation state, the vehicle is in a motor or battery fault state according to different fault information, and targeted safety control operation is performed, the highest vehicle speed limit is performed on the vehicle according to the preset fault speed threshold, and the battery is treated to complete fault self-rescue, limit the vehicle performance in a safe range, give the driver basic power and operability, and further safety protection is performed according to the complex environment, thereby improving the self-rescue success rate and driving safety of the P2 hybrid architecture motor battery fault.

[0099] Referring to Figure 3 , it is a structure schematic diagram of the P2 hybrid architecture motor battery fault control system proposed by the third embodiment of the present application, and the system comprises:

[0100] The fault detection module 10 is used for obtaining the driving state of the current vehicle, and performing vehicle fault detection according to the driving state to obtain the fault information of the current vehicle;

[0101] The fault self-rescue module 20 is used for judging the fault type according to the fault information, and if it is determined that the current vehicle is in a battery fault state, high and low voltage self-detection is performed to start the voltage stabilizing power generation state;

[0102] The steady state maintaining module 30 is used for limiting the highest vehicle speed of the vehicle according to the preset fault speed threshold, and then performing battery heat preservation treatment to complete fault self-rescue.

[0103] The present application also proposes a computer storage medium having one or more programs stored thereon, which programs are executed by a processor to implement the P2 hybrid architecture motor battery fault control method described above.

[0104] The application further provides a computer 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 realize the P2 hybrid architecture motor battery fault control method.

[0105] Those skilled in the art can understand that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a list of executable instructions for implementing logical functions, which can be embodied in any computer readable medium for use by or in connection with an instruction execution system, apparatus or device, such as a computer-based system, a system including a processor or other system that can fetch the instructions from an instruction execution system, apparatus or device and execute the instructions, or in conjunction with these instruction execution systems, apparatus or devices. For the purpose of this specification, the "computer readable medium" can be any device that can contain a storage, communication, propagation or transmission of programs for use by or in conjunction with an instruction execution system, apparatus or device, or in conjunction with these instruction execution systems, apparatus or devices.

[0106] More specific examples (a non-exhaustive list) of the computer readable medium include the following: an electrical connection having one or more wires (electrical devices), a portable computer diskette (magnetic devices), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium can even be paper or other suitable medium on which the program is printed, because the program can be electronically obtained, for example, by optical scanning of the paper or other medium, followed by electronic means for editing, interpreting or otherwise processing the program to store it in a computer memory.

[0107] It should be understood that parts of the present application can be realized in hardware, software, firmware or a combination thereof. In the above-described embodiments, a plurality of steps or methods can be realized by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if realized in hardware, and as in another embodiment, any one or a combination of the following technologies known in the art can be used: discrete logic circuit with logic gate circuit for implementing logical functions on data signals, application specific integrated circuit with suitable combination logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA), etc.

[0108] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0109] The above-described embodiments only express several implementation manners of the present application, which are described in a more specific and detailed manner, but cannot be understood as a limitation on the patent scope of the present application. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A P2 hybrid architecture motor battery fault control method, characterized in that: include: Acquiring the current driving state of the vehicle, and performing vehicle fault detection according to the driving state to obtain fault information of the current vehicle; Determine the fault type based on the fault information. If it is determined that the vehicle is currently in a battery fault state, perform a high and low voltage self-test to start a voltage-stabilized power generation state. If it is determined that the current vehicle is in a motor fault state, the motor fault processing steps are performed according to the driving state, specifically including: When it is detected that the current vehicle is in a motor failure state and the driving state is in a stationary state, the hybrid power controller controls the starter to perform an engine starting operation; The motor controller sets a speed bias according to a preset active short-circuit critical speed threshold, and controls the opening of the engine's throttle and intake fuel injection port to keep the engine's maximum speed value lower than the preset bias speed value; Then, according to the preset biased speed value, the vehicle speed is controlled to be lower than the preset fault speed limit threshold; The vehicle's maximum speed is limited according to the preset fault speed limit threshold, and then the battery is insulated to complete the fault self-rescue.

2. The P2 hybrid architecture motor battery fault control method according to claim 1, characterized in that: The step of obtaining the current driving state of the vehicle and performing vehicle fault detection according to the driving state to obtain fault information of the current vehicle specifically includes: Detect the current vehicle speed; Determine the current driving state of the vehicle according to a preset static speed threshold; If the current vehicle speed is less than or equal to the preset static speed threshold, the current vehicle state is determined to be stationary; If the current vehicle speed is greater than the preset static speed threshold, the current vehicle state is determined to be a driving state; performing vehicle fault detection according to the driving state; If the vehicle is currently stationary, adjust the power supply to the ON position and apply high voltage power to perform vehicle fault detection and obtain fault information; If the current vehicle is in driving state, the P2 motor of the current vehicle is subjected to real-time cyclic fault self-test to obtain fault information; According to the fault cause and fault location in the fault information, the instrument fault light is awakened and the fault feedback text is displayed.

3. The P2 hybrid architecture motor battery fault control method according to claim 1, characterized in that: The step of determining the fault type according to the fault information specifically includes: After obtaining the fault information, locate the fault cause and location; If it is determined that the current vehicle is in a motor fault state, the motor fault processing is performed according to the driving state; If it is determined that the current vehicle is in a battery fault state, the battery fault processing will be performed separately according to the driving status.

4. The P2 hybrid architecture motor battery fault control method according to claim 3, characterized in that: If it is determined that the current vehicle is in a motor fault state, the step of performing motor fault processing according to the driving state further includes: When it is detected that the current vehicle is in a motor fault state and the driving state is in the driving state, the motor controller performs continuous motor rotor speed detection; Determine whether the motor rotor speed is greater than a preset active short-circuit critical speed threshold; If it is determined that the motor rotor speed is greater than the preset active short-circuit critical speed threshold, the P2 motor is controlled to enter an active short-circuit braking state to continuously decelerate the motor rotor to the preset active short-circuit critical speed threshold; If it is determined that the motor rotor speed is not greater than a preset active short-circuit critical speed threshold, the hybrid power controller controls the starter to restart the engine, the motor controller sets a speed offset according to the preset active short-circuit critical speed threshold, controls the opening of the engine's throttle and intake fuel injection ports to maintain the maximum speed of the engine below the preset offset speed value, and sends a feedback signal to the transmission controller; The transmission controller limits the maximum speed of upshifting according to the feedback signal to control the vehicle speed to be lower than the preset fault speed limit threshold.

5. The P2 hybrid architecture motor battery fault control method according to claim 3, characterized in that: If it is determined that the current vehicle is in a battery failure state, the steps of performing battery failure processing according to the driving state specifically include: When it is detected that the vehicle is currently in a battery fault state and the driving state is in the driving state, the hybrid controller controls the engine speed to a preset steady-state speed value within a first preset time so that the P2 motor enters a steady-voltage power generation state; According to the preset steady-state speed value, the vehicle speed is controlled to be lower than the preset fault speed limit threshold.

6. The P2 hybrid architecture motor battery fault control method according to claim 3, characterized in that: If it is determined that the current vehicle is in a battery failure state, the step of performing battery failure processing according to the driving state further includes: When it is detected that the current vehicle is in a battery fault state and the driving state is at rest, the hybrid controller controls the 12V low-voltage power boost module to supply power to the motor controller to perform high and low voltage self-tests on the P2 motor; After completing the self-test, the hybrid controller controls the 12V low-voltage power boost module to stop supplying power to the motor controller, and controls the starter to start the engine, so that the P2 motor enters a stable voltage power generation state; Keep the vehicle speed below the preset fault speed limit threshold; The hybrid controller controls the 12V low-voltage power boost module to supply power to the high-voltage distribution controller, and the high-voltage distribution controller supplies power to the PTC heating module to heat the battery. When it detects that the internal temperature of the battery is within the preset normal operating threshold range, it stops supplying power and heating.

7. A P2 hybrid architecture motor battery fault control system, characterized in that: include: A fault detection module is used to obtain the current driving state of the vehicle and perform vehicle fault detection according to the driving state to obtain the current vehicle fault information; A fault self-help module is used to determine the fault type based on the fault information. If it is determined that the current vehicle is in a battery fault state, a high and low voltage self-test is performed to start a voltage-stabilized power generation state; If it is determined that the current vehicle is in a motor fault state, the motor fault processing steps are performed according to the driving state, specifically including: When it is detected that the current vehicle is in a motor failure state and the driving state is in a stationary state, the hybrid power controller controls the starter to perform an engine starting operation; The motor controller sets a speed bias according to a preset active short-circuit critical speed threshold, and controls the opening of the engine's throttle and intake fuel injection port to keep the engine's maximum speed value lower than the preset bias speed value; Then, according to the preset biased speed value, the vehicle speed is controlled to be lower than the preset fault speed limit threshold; The steady-state maintenance module is used to limit the vehicle's maximum speed according to the preset fault speed limit threshold, and then perform battery insulation treatment to complete fault self-rescue.

8. A storage medium, characterized in that: The storage medium stores one or more programs, which, when executed by the processor, implement the P2 hybrid architecture motor battery fault control method according to any one of claims 1 to 6.

9. A computer device, characterized in that: The computer 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, it implements the P2 hybrid architecture motor battery fault control method according to any one of claims 1 to 6.

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