P2 hybrid architecture motor battery fault control method and system

Abstract

The invention relates to the field of automobile control, and provides a P2 hybrid architecture motor battery fault control method and system, when a motor battery breaks down, a whole vehicle circuit is controlled to recover to a steady state, and it is ensured that a vehicle is in a state capable of being operated by a driver, so that the situation that when the vehicle suddenly loses power, the driver is difficult to carry out safety evasion behaviors is avoided; the vehicle speed and the engine and motor rotating speed of the vehicle are controlled to avoid further damage to a vehicle motor system, basic power is provided for the vehicle to achieve self-rescue and escape, the vehicle can go for maintenance assistance by itself, influences of different regions and different seasons are considered, further power shortage damage caused by low temperature of a battery is prevented, and the service life of the vehicle is prolonged. According to the method, the self-rescue success rate in a complex scene is improved, and the self-rescue success rate and the driving safety of the P2 hybrid architecture motor battery fault are improved.

Description

Technical Field

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

[0002] With the rapid development of the automobile industry, new energy vehicles have gradually become one of the mainstream choices of consumers, especially hybrid models. The power chain of traditional fuel vehicles includes engines, clutches, and gearboxes, while the existing mainstream hybrid models are based on the power chain of traditional fuel vehicles, with a power motor added between the clutch and the gearbox, forming a hybrid model with a P2 architecture. In the power system of P2 hybrid models, the safety performance of the power motor 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 travel, the excessively high speed will cause a significant motor reverse electromotive force, thereby causing the motor to enter an active short-circuit braking state. The active short-circuit braking state will stop the motor from rotating, thereby preventing the vehicle from continuing to travel. This not only brings great inconvenience to the owner, but may also cause safety hazards, causing the vehicle to suddenly lose power. In extremely cold environments (such as below minus 30 degrees Celsius) or when the battery pack fails, the entire vehicle cannot be powered by high voltage. Since the P2 motor is an excitation motor, it cannot work normally without the power supply of a high-voltage power supply. In the absence of a separate motor to generate electricity for the 12V battery, the power will soon be exhausted, eventually causing the vehicle to break down while driving, causing great inconvenience to the user. The existing control methods for dealing with motor battery failures usually have weak self-rescue capabilities due to the small market demand for individual components, high unit prices and R&D costs, and no low-temperature battery pack wake-up function.

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

[0005] Based on this, the purpose of the present invention is to provide a P2 hybrid architecture motor battery fault control method and system, which can control the restoration of the entire vehicle circuit to a steady state when a motor battery fails, ensure that the vehicle is in a driver-operable state, so as to avoid the driver's difficulty in performing safe evasive actions when the vehicle suddenly loses power, and control the vehicle speed and the engine and motor speeds to avoid further damage to the vehicle's motor system. At the same time, the vehicle is given basic power to rescue itself and can go to maintenance assistance on its own. Taking into account the influence of different regions and seasons, the battery is prevented from further power loss damage caused by low temperature, thereby improving the self-rescue success rate in complex scenarios. The present invention improves the self-rescue success rate and driving safety of P2 hybrid architecture motor battery failures.

[0006] The present invention proposes a P2 hybrid architecture motor battery fault control method, comprising: Acquire the current driving state of the vehicle, and perform vehicle fault detection according to the driving state to obtain fault information of the current vehicle; Determine the fault type according to the fault information, and if it is determined that the current vehicle is in a battery fault state, perform high and low voltage self-tests to start a voltage-stabilized power generation state; 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.

[0007] In summary, according to the above-mentioned P2 hybrid architecture motor battery failure control method, by controlling the restoration of the entire vehicle circuit to a steady state when a motor battery fails, the vehicle is ensured to be in a driver-operable state to avoid the driver's difficulty in performing safe evasive actions when the vehicle suddenly loses power, and the vehicle speed and the engine and motor speeds are controlled to avoid further damage to the vehicle's motor system. At the same time, the vehicle is given basic power to self-rescue and escape, and can go to maintenance assistance on its own. Taking into account the influence of different regions and seasons, the battery is prevented from further power loss damage caused by low temperature, thereby improving the self-rescue success rate in complex scenarios. The present invention improves the self-rescue success rate and driving safety of P2 hybrid architecture motor battery failures. Specifically, the current driving state of the vehicle is obtained, and vehicle fault detection is performed according to the driving state to obtain the fault information of the current vehicle, and different fault detection operations are performed according to the driving or stationary driving state of the vehicle to locate the cause and location of the fault, and the fault type is determined according to the fault information. If it is determined that the current vehicle is in a battery fault state, high and low voltage self-tests are performed to start a voltage-stabilized power generation state, and the vehicle is determined to be in a motor or battery fault state according to different fault information to perform targeted safety control operations, and the maximum speed of the vehicle is limited according to a preset fault speed limit threshold, and then the battery is kept warm to complete the fault self-rescue, while limiting the vehicle performance within a safe range, providing basic driving power and operability, and performing further safety protection according to complex environments. The present invention improves the self-rescue success rate and driving safety of P2 hybrid architecture motor battery failures.

[0008] Furthermore, the step of obtaining the driving state of the current 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 vehicle speed threshold, the current vehicle driving state is determined to be static; If the current vehicle speed is greater than the preset static vehicle speed threshold, the current vehicle driving 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 power on the high voltage 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-check 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.

[0009] Furthermore, the step of determining the fault type according to the fault information specifically includes: After obtaining the fault information, locate the fault cause and fault 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 will be handled separately according to the driving status.

[0010] Furthermore, if it is determined that the current vehicle is in a motor fault state, the steps of performing motor fault processing according to the driving state specifically include: 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 throttle intake and fuel injection ports of the engine to keep the maximum speed value of the engine lower than the preset bias speed value; Then, the vehicle speed is controlled to be lower than the preset fault speed limit threshold according to the preset bias speed value.

[0011] Furthermore, 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 also 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 so that the motor rotor continues to 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 power controller controls the starter to restart the engine, the motor controller sets the speed bias according to the preset active short-circuit critical speed threshold, controls the opening of the engine's throttle intake and fuel injection ports to keep the maximum speed value of the engine lower than the preset bias 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.

[0012] Furthermore, if it is determined that the current vehicle is in a battery failure state, the steps of handling the battery failure are performed according to the driving state, specifically including: When it is detected that the current vehicle is in a battery fault state and the driving state is in a 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 voltage-stabilized 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.

[0013] Furthermore, if it is determined that the current vehicle is in a battery failure state, the step of performing battery failure treatment according to the driving state also includes: When it is detected that the current vehicle is in a battery fault state and the driving state is in a stationary state, 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 voltage-stabilized power generation state; Keep the vehicle speed below the preset fault speed limit threshold; The hybrid power 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 until it detects that the internal temperature of the battery is within the preset battery normal operating threshold range, and then stops supplying power and heating.

[0014] The present invention proposes a P2 hybrid architecture motor battery fault control system, comprising: 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 according to 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; The steady-state maintenance module is used to limit the maximum speed of the vehicle according to the preset fault speed limit threshold, and then perform battery insulation treatment to complete fault self-rescue.

[0015] The present invention also provides a storage medium, which stores one or more programs, and when the programs are executed by a processor, the above-mentioned P2 hybrid architecture motor battery fault control method is implemented.

[0016] The present invention also provides a computer device, the computer device comprising 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 above-mentioned P2 hybrid architecture motor battery fault control method is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A flow chart of a P2 hybrid architecture motor battery fault control method proposed in the first embodiment of the present invention; Figure 2 A flow chart of a P2 hybrid architecture motor battery fault control method proposed in the second embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a P2 hybrid architecture motor battery fault control system proposed in the third embodiment of the present invention.

[0018] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0019] In order to facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] See also Figure 1 , which is a flow chart of a P2 hybrid architecture motor battery fault control method proposed in a first embodiment of the present invention, the P2 hybrid architecture motor battery fault control method comprises steps S01 to S03, wherein: Step S01: obtaining the driving state of the current vehicle, and performing vehicle fault detection according to the driving state to obtain fault information of the current vehicle; It should be noted that in this embodiment, the current vehicle speed is detected; 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 vehicle speed threshold, the current vehicle driving state is determined to be static; If the current vehicle speed is greater than the preset static vehicle speed threshold, the current vehicle driving 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 power on the high voltage 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-check 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.

[0023] Step S02: judging the fault type according to the fault information, if it is determined that the current vehicle is in a battery fault state, performing high and low voltage self-test to start the voltage stabilization power generation state; It should be noted that in this embodiment, after the fault information is obtained, the fault cause and the fault location are located; 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 will be handled according to the driving state; In this embodiment, 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 throttle intake and fuel injection ports of the engine to keep the maximum speed value of the engine 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; In this 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; 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 so that the motor rotor continues to 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 power controller controls the starter to restart the engine, the motor controller sets the speed bias according to the preset active short-circuit critical speed threshold, controls the opening of the engine's throttle intake and fuel injection ports to keep the maximum speed value of the engine lower than the preset bias 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, so as to control the vehicle running speed to be lower than the preset fault speed limit threshold; In this embodiment, when it is detected that the current vehicle is in a battery fault state and the driving state is in a 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 voltage-stabilized 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.

[0024] Step S03: limiting the maximum speed of the vehicle according to a preset fault speed limit threshold, and then performing a battery insulation process to complete the fault self-help; It should be noted that in this embodiment, when it is detected that the current vehicle is in a battery fault state and the driving state is in a stationary state, 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 voltage-stabilized power generation state; Keep the vehicle speed below the preset fault speed limit threshold; The hybrid power 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 until it detects that the internal temperature of the battery is within the preset battery normal operating threshold range, and then stops supplying power and heating.

[0025] In summary, according to the above-mentioned P2 hybrid architecture motor battery failure control method, by controlling the restoration of the entire vehicle circuit to a steady state when a motor battery fails, the vehicle is ensured to be in a driver-operable state to avoid the driver's difficulty in performing safe evasive actions when the vehicle suddenly loses power, and the vehicle speed and the engine and motor speeds are controlled to avoid further damage to the vehicle's motor system. At the same time, the vehicle is given basic power to self-rescue and escape, and can go to maintenance assistance on its own. Taking into account the influence of different regions and seasons, the battery is prevented from further power loss damage caused by low temperature, thereby improving the self-rescue success rate in complex scenarios. The present invention improves the self-rescue success rate and driving safety of P2 hybrid architecture motor battery failures. Specifically, the current driving state of the vehicle is obtained, and vehicle fault detection is performed according to the driving state to obtain the fault information of the current vehicle, and different fault detection operations are performed according to the driving or stationary driving state of the vehicle to locate the cause and location of the fault, and the fault type is determined according to the fault information. If it is determined that the current vehicle is in a battery fault state, high and low voltage self-tests are performed to start a voltage-stabilized power generation state, and the vehicle is determined to be in a motor or battery fault state according to different fault information to perform targeted safety control operations, and the maximum speed of the vehicle is limited according to a preset fault speed limit threshold, and then the battery is kept warm to complete the fault self-rescue, while limiting the vehicle performance within a safe range, providing basic driving power and operability, and performing further safety protection according to complex environments. The present invention improves the self-rescue success rate and driving safety of P2 hybrid architecture motor battery failures.

[0026] See also Figure 2 , which is a flow chart of a P2 hybrid architecture motor battery fault control method proposed in a second embodiment of the present invention, the P2 hybrid architecture motor battery fault control method comprises steps S11 to S16, wherein: Step S11: Detect the current vehicle's driving speed, and determine the current vehicle's driving state according to a preset static vehicle speed threshold. If the current vehicle's driving speed is less than or equal to the preset static vehicle speed threshold, determine that the current vehicle's driving state is a stationary state. If the current vehicle's driving speed is greater than the preset static vehicle speed threshold, determine that the current vehicle's driving state is a driving state. Perform vehicle fault detection according to the driving state. If the current vehicle is in a stationary state, adjust the power supply to the ON gear and perform high-voltage power-on to perform vehicle fault detection and obtain fault information. If the current vehicle is in a driving state, perform real-time cyclic fault self-checking on the P2 motor of the current vehicle to obtain fault information. According to the fault cause and fault location in the fault information, wake up the instrument fault light and display the fault feedback text. It should be noted that the preset static vehicle speed threshold in this embodiment is 5 kilometers per hour to determine whether the vehicle is stationary or moving.

[0027] Step S12: After the fault information is obtained, the fault cause and fault location are located. If it is determined that the current vehicle is in a motor fault state, the motor fault is handled according to the driving state. If it is determined that the current vehicle is in a battery fault state, the battery fault is handled according to the driving state. Step S13: When it is detected that the current vehicle is in a motor fault state and the driving state is in a stationary state, the hybrid power controller controls the starter to start the engine, and the motor controller sets the speed bias according to the preset active short-circuit critical speed threshold, controls the opening of the throttle intake fuel injection port of the engine, so as to keep the maximum speed value of the engine lower than the preset bias speed value, and then controls the vehicle driving speed to be lower than the preset fault speed limit threshold according to the preset bias speed value; It should be noted that the preset active short-circuit critical speed threshold in this embodiment is the minimum motor speed that triggers the vehicle's active short-circuit braking state, so the motor speed bias is set to limit the motor speed to a range that will not trigger the vehicle's active short-circuit braking state, that is, the preset bias speed value in this implementation. The preset bias speed value is 80% of the minimum motor speed that triggers the vehicle's active short-circuit braking state, so as to avoid triggering the active short-circuit braking state to the greatest extent while giving the vehicle maximum power and controllability, thereby controlling the vehicle speed below the preset fault speed limit threshold. The preset fault speed limit threshold in this embodiment is fifty kilometers per hour.

[0028] Step S14: 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 to 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 cause the motor rotor to 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 power controller controls the starter to restart the engine. The motor controller sets a speed bias according to the preset active short-circuit critical speed threshold, controls the opening of the engine's throttle intake nozzle, so as to keep the maximum speed value of the engine lower than the preset bias speed value, and sends a feedback signal to the gearbox controller. The gearbox controller limits the maximum speed of upshifting according to the feedback signal to control the vehicle's driving speed to be lower than the preset fault speed limit threshold. Step S15: When it is detected that the current vehicle is in a battery fault state and the driving state is in a driving state, the hybrid power controller controls the engine speed to a preset steady-state speed value within a first preset time, so that the P2 motor enters a voltage-stabilized power generation state, and controls the vehicle driving speed to be lower than a preset fault speed limit threshold according to the preset steady-state speed value; It should be noted that in this embodiment, because the vehicle is in a driving state, when a battery fails, self-rescue processing is required within the first preset time to avoid further damage, and at the same time restore the power and controllability of the vehicle as soon as possible to avoid safety accidents that may occur due to loss of power. The first preset time in this embodiment is 5 seconds. The voltage-stabilized power generation state in this embodiment is an intermediate state that will not enter the active short-circuit braking state and will not be in a continuous battery depletion state. The preset steady-state speed value in this 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 continuous battery depletion state.

[0029] Step S16: When it is detected that the current vehicle is in a battery fault state and the driving state is in a stationary state, the hybrid power controller controls the 12V low-voltage power boost module to supply power to the motor controller to perform high and low voltage self-test on the P2 motor. After the self-test is completed, the hybrid power 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 voltage-stabilized power generation state, and keeps the vehicle's driving speed below a preset fault speed limit threshold. The hybrid power controller controls the 12V low-voltage power boost 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 it is detected that the internal temperature of the battery is within the preset battery normal operating threshold range, and then stops supplying power and heating. It should be noted that in this embodiment, in order to ensure that the vehicle battery will not suffer further power loss due to complex environmental factors after a failure, the internal temperature of the battery is kept continuously within the preset battery normal operating threshold range, where the minimum threshold of the preset battery normal operating threshold range is the battery rated operating temperature threshold, and the maximum threshold of the preset battery normal operating threshold range is the battery overheating temperature threshold.

[0030] In summary, according to the above-mentioned P2 hybrid architecture motor battery failure control method, by controlling the restoration of the entire vehicle circuit to a steady state when a motor battery fails, the vehicle is ensured to be in a driver-operable state to avoid the driver's difficulty in performing safe evasive actions when the vehicle suddenly loses power, and the vehicle speed and the engine and motor speeds are controlled to avoid further damage to the vehicle's motor system. At the same time, the vehicle is given basic power to self-rescue and escape, and can go to maintenance assistance on its own. Taking into account the influence of different regions and seasons, the battery is prevented from further power loss damage caused by low temperature, thereby improving the self-rescue success rate in complex scenarios. The present invention improves the self-rescue success rate and driving safety of P2 hybrid architecture motor battery failures. Specifically, the current driving state of the vehicle is obtained, and vehicle fault detection is performed according to the driving state to obtain the fault information of the current vehicle, and different fault detection operations are performed according to the driving or stationary driving state of the vehicle to locate the cause and location of the fault, and the fault type is determined according to the fault information. If it is determined that the current vehicle is in a battery fault state, high and low voltage self-tests are performed to start a voltage-stabilized power generation state, and the vehicle is determined to be in a motor or battery fault state according to different fault information to perform targeted safety control operations, and the maximum speed of the vehicle is limited according to a preset fault speed limit threshold, and then the battery is kept warm to complete the fault self-rescue, while limiting the vehicle performance within a safe range, providing basic driving power and operability, and performing further safety protection according to complex environments. The present invention improves the self-rescue success rate and driving safety of P2 hybrid architecture motor battery failures.

[0031] See also Figure 3 , which is a schematic diagram of the structure of a P2 hybrid architecture motor battery fault control system proposed in a third embodiment of the present invention, and the system includes: The fault detection module 10 is used to obtain the driving state of the current vehicle and perform vehicle fault detection according to the driving state to obtain fault information of the current vehicle; The fault self-help module 20 is used to determine the fault type according to 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; The steady-state maintaining module 30 is used to limit the maximum speed of the vehicle according to a preset fault speed limit threshold, and then perform battery insulation treatment to complete fault self-rescue.

[0032] The present invention also proposes a computer storage medium on which one or more programs are stored, and when the program is executed by a processor, the above-mentioned P2 hybrid architecture motor battery fault control method is implemented.

[0033] The present invention also proposes 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 implement the above-mentioned P2 hybrid architecture motor battery fault control method.

[0034] Those skilled in the art will appreciate that the logic and / or steps represented in the flowchart or otherwise described herein, for example, may be considered as an ordered list of executable instructions for implementing logical functions, and may be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For purposes of this specification, "computer-readable medium" may be any device that can contain storage, communication, propagation or transmission of a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0035] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a 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, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0036] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or a combination thereof: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A P2 hybrid architecture motor battery fault control method, characterized in that: include: Acquire the current driving state of the vehicle, and perform vehicle fault detection according to the driving state to obtain fault information of the current vehicle; Determine the fault type according to the fault information, and if it is determined that the current vehicle is in a battery fault state, perform high and low voltage self-tests to start a voltage-stabilized power generation state; 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 the 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 vehicle speed threshold, the current vehicle driving state is determined to be static; If the current vehicle speed is greater than the preset static vehicle speed threshold, the current vehicle driving 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 power on the high voltage 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-check 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 fault 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 will be handled 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 steps of performing motor fault processing according to the driving state specifically include: 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 throttle intake and fuel injection ports of the engine to keep the maximum speed value of the engine lower than the preset bias speed value; Then, the vehicle speed is controlled to be lower than the preset fault speed limit threshold according to the preset bias speed value.

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 motor fault state, the step of performing motor fault processing according to the driving state also 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 so that the motor rotor continues to 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 power controller controls the starter to restart the engine, the motor controller sets the speed bias according to the preset active short-circuit critical speed threshold, controls the opening of the engine's throttle intake and fuel injection ports to keep the maximum speed value of the engine lower than the preset bias 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.

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 fault state, the steps of handling the battery fault are performed according to the driving state, specifically including: When it is detected that the current vehicle is in a battery fault state and the driving state is in a 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 voltage-stabilized 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.

7. 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 also includes: When it is detected that the current vehicle is in a battery fault state and the driving state is in a stationary state, 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 voltage-stabilized power generation state; Keep the vehicle speed below the preset fault speed limit threshold; The hybrid power 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 until it detects that the internal temperature of the battery is within the preset battery normal operating threshold range, and then stops supplying power and heating.

8. 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 according to 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; The steady-state maintenance module is used to limit the maximum speed of the vehicle according to the preset fault speed limit threshold, and then perform battery insulation treatment to complete fault self-rescue.

9. 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 as described in any one of claims 1-7.

10. 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 described in any one of claims 1-7.

Images