Hybrid transmission control method and device, computer equipment and storage medium

Abstract

The invention relates to the technical field of vehicle control, in particular to a hybrid transmission control method and device, computer equipment and a storage medium. The method comprises the steps that in the running or power-on process of a vehicle, state data corresponding to a key component cooperating with the hybrid transmission to achieve power transmission are obtained; if the state data hits the matching condition that the hybrid transmission is not available in the first mode, it is determined that the first mode of the hybrid transmission is not available, and whether a second mode available for the hybrid transmission exists or not currently is detected; and if the second mode exists, the hybrid transmission is controlled to be switched from the first mode to the second mode, and the hybrid transmission is controlled to operate according to preset driving parameters corresponding to the second mode. According to the embodiment of the invention, the unavailable mode of the transmission can be controlled, so that the hardware protection requirement of the vehicle is ensured, the defect of hardware damage is avoided, and the running safety and reliability of the vehicle are improved.

Description

Technical Field

[0001] This application relates to the field of vehicle control technology, specifically to methods, devices, computer equipment, and storage media for controlling hybrid transmissions. Background Technology

[0002] With increasingly stringent market requirements for fuel efficiency and emissions, and the development of electrification systems, hybrid technology is key to achieving energy conservation and emission reduction. To meet market demands, both OEMs and component suppliers are seeking solutions for energy conservation and emission reduction. However, current pure electric vehicle battery technology is complex and costly, thus hybrid systems are receiving strong promotion.

[0003] As the primary power source for new energy vehicles, the transmission can suffer hardware damage if its unavailability modes are not properly restricted in certain usage scenarios. Therefore, how to reasonably limit these unavailability modes is a pressing issue that needs to be addressed. Summary of the Invention

[0004] In view of this, this application provides a method, apparatus, computer device, and storage medium for controlling a hybrid transmission, in order to address the problem that related technologies have not proposed a scheme that can reasonably limit transmission unavailability modes.

[0005] In a first aspect, this application provides a method for controlling a hybrid transmission, the method comprising: During vehicle operation or power-on, acquire status data corresponding to key components that work in conjunction with the hybrid transmission to achieve power transmission; If the status data matches the condition that the hybrid transmission is unavailable in the first mode, then it is determined that the first mode of the hybrid transmission is unavailable, and it is checked whether there is a second mode available for the hybrid transmission. If a second mode exists, the hybrid transmission is controlled to switch from the first mode to the second mode, and the hybrid transmission is controlled to operate according to the preset driving parameters corresponding to the second mode.

[0006] Furthermore, the method also includes: The status data is matched against matching conditions that are not available in each preset mode to obtain the matching results; Based on the preset mode matched by the matching result, it serves as the first mode that is unavailable for hybrid transmissions.

[0007] Furthermore, the key component is the clutch. The state data is matched against matching conditions that are unavailable in various preset modes to obtain matching results, including: Upon receiving the first indication information about the clutch, it is determined that the matching condition for the series mode matched to the hybrid transmission is unavailable, and a matching result is obtained where the first mode is the series mode of the hybrid transmission. The first indication information is used to characterize that the clutch hardware is stuck and cannot be disengaged.

[0008] Furthermore, the key component is the clutch. The state data is matched against matching conditions that are unavailable in various preset modes to obtain matching results, including: Obtain the clutch temperature, clutch speed, and clutch slide speed; When the temperature of the clutch, the speed of the clutch, or the slippage speed of the clutch cannot be matched with the corresponding matching conditions for the parallel mode of the hybrid transmission, the matching result of the first mode is the parallel mode of the hybrid transmission. or, Upon receiving a second instruction regarding the clutch, it is determined that the matching condition corresponding to the parallel mode matched to the hybrid transmission is unavailable, and a matching result for the first mode being the parallel mode of the hybrid transmission is obtained, wherein the second instruction is used to characterize a clutch holding open failure. or, Obtain the mode switching time of the hybrid transmission based on the clutch; If the mode switching time is greater than the switching duration threshold, it is determined that the matching condition for the parallel mode of the hybrid transmission is unavailable, and the matching result is obtained where the first mode is the parallel mode of the hybrid transmission.

[0009] Furthermore, the method also includes: If the status data of key components matches the trigger data set in the first target mode of the preset mode, the matching conditions corresponding to the first target mode are determined, and the hybrid transmission is controlled to operate according to the preset driving parameters corresponding to the first target mode.

[0010] Furthermore, when the key component is a motor, the method also includes: If the vehicle's gear position is determined to be the target gear and a command to trigger a fault that keeps the current gear in place is received, the motor's status data is acquired. When the status data is non-fault data, determine the matching condition corresponding to the unavailable parallel mode of the hybrid transmission, request that all gears except the target gear be unavailable, limit the vehicle speed and prohibit the hybrid transmission from entering parallel mode. When the status data is fault data, it is determined that the matching condition corresponding to the unavailable parallel mode of the hybrid transmission is not matched. It is requested that all gears except the target gear be unavailable, the vehicle speed is limited, and the hybrid transmission is requested to enter parallel mode.

[0011] Furthermore, the key component is the oil pump, and the method also includes: Upon receiving a second instruction message regarding the oil pump, the matching conditions corresponding to the second target mode in the preset modes are determined, and the hybrid transmission is controlled to operate according to the preset driving parameters corresponding to the second target mode. The second instruction message is used to characterize an oil pump lubrication failure.

[0012] Secondly, this application provides a device for controlling a hybrid transmission, the device comprising: The first acquisition module is used to acquire status data corresponding to key components that work together with the hybrid transmission to achieve power transmission during vehicle driving or power-on. The first determining module is used to determine that the first mode of the hybrid transmission is unavailable if the state data matches the matching condition that the hybrid transmission is unavailable in the first mode, and to detect whether there is a second mode available for the hybrid transmission. The control module is used to control the hybrid transmission to switch from the first mode to the second mode if a second mode exists, and to control the hybrid transmission to operate according to the preset driving parameters corresponding to the second mode.

[0013] Thirdly, this application provides a computer device, including: a memory and a processor, which are communicatively connected to each other. The memory stores computer instructions, and the processor executes the computer instructions to perform the hybrid transmission control method of the first aspect or any corresponding embodiment described above.

[0014] Fourthly, this application provides a computer-readable storage medium storing computer instructions for causing a computer to perform the hybrid transmission control method of the first aspect or any corresponding embodiment described above.

[0015] In this embodiment, by acquiring the status data of key components that work in conjunction with the hybrid transmission to transmit power during vehicle operation or power-on, and when this status data matches the matching condition that the hybrid transmission's first mode is unavailable, it is determined that the first mode of the hybrid transmission is unavailable. Then, it checks whether a second mode of the hybrid transmission is available, controls the hybrid transmission to switch from the first mode to the second mode, and controls the hybrid transmission to operate according to the preset driving parameters corresponding to the second mode. In this way, this embodiment can control the unavailable mode of the transmission, ensuring the vehicle's hardware protection requirements, avoiding the disadvantages of hardware damage, and improving the vehicle's operational safety and reliability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic flowchart of a hybrid transmission control method according to an embodiment of this application; Figure 2 This is a flowchart illustrating the inability of the series mode of a hybrid transmission according to an embodiment of this application; Figure 3 This is a flowchart illustrating the unavailability of the parallel mode of the hybrid transmission according to an embodiment of this application; Figure 4 This is a schematic flowchart of a hybrid transmission control method according to an embodiment of this application; Figure 5 This is a structural block diagram of a hybrid transmission control device according to an embodiment of this application; Figure 6 This is a schematic diagram of the hardware structure of a computer device according to an embodiment of this application. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] It should be noted that, in the description of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. The terms "first," "second," etc., in this application are used to distinguish similar objects and are not used to describe a specific order or sequence.

[0020] Currently, the battery technology for pure electric vehicles is complex and costly, thus hybrid systems are being heavily promoted. To meet current fuel efficiency and emission requirements, OEMs and component suppliers are seeking solutions for energy conservation and emission reduction in hybrid technology. It's important to note that dual-motor hybrid systems have three motor modes: pure electric mode, series mode, and parallel mode. In series mode, the motor drives the wheels, the clutch is not engaged, the engine charges the battery, and the motor drives the wheels. In parallel mode, the clutch is engaged, and the engine directly drives the wheels. The availability of transmission modes, including series / parallel / limp-drive / gear-hold modes, is crucial throughout the driving process, significantly impacting drivability and hardware reliability. However, current technologies lack a reasonable solution to limit unavailable transmission modes to minimize hardware damage.

[0021] To address the aforementioned problems, according to an embodiment of this application, a method embodiment for controlling a hybrid transmission is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0022] This embodiment provides a method for controlling a hybrid transmission, such as... Figure 1 As shown, Figure 1 This is a flowchart of a hybrid transmission control method according to an embodiment of this application. This method can be applied to a vehicle's PCM (Powertrain Control Module), and the method includes the following steps: Step S101: During vehicle operation or power-on, acquire status data corresponding to key components that work in conjunction with the hybrid transmission to achieve power transmission.

[0023] Optionally, during normal vehicle operation or when the vehicle is powered on, the vehicle's PCM can acquire real-time status data of key components that work in conjunction with the hybrid transmission to transmit power. These key components may include the clutch, motor, solenoid valves, etc. During actual vehicle operation, these key components will drive the vehicle forward together with the hybrid transmission. The status data of these key components includes clutch status fault codes, clutch temperature, clutch speed, etc.

[0024] Step S102: If the status data matches the condition that the hybrid transmission is unavailable in the first mode, then it is determined that the first mode of the hybrid transmission is unavailable, and it is detected whether there is a second mode available for the hybrid transmission.

[0025] Optionally, in this embodiment, matching conditions for the hybrid transmission being unavailable in multiple modes are pre-set. If the state data matches the matching condition that the hybrid transmission is unavailable in the first mode, then the first mode of the hybrid transmission is determined to be unavailable. It is understood that the first mode is included among the multiple modes, so if the state data matches the matching condition that the hybrid transmission is unavailable in the first mode, then the current unavailable mode of the hybrid transmission is considered to be the first mode unavailable. The first mode can be a series mode, a parallel mode, etc.

[0026] The vehicle's PCM then sends the first mode unavailable signal directly to the ECM (Engine Control Module). Upon receiving this signal, the ECM controls the vehicle to perform corresponding post-processing (such as adjusting torque and vehicle speed) and requests other modes, such as checking whether a second mode for the hybrid transmission is currently available.

[0027] In step S103, if a second mode exists, the hybrid transmission is controlled to switch from the first mode to the second mode, and the hybrid transmission is controlled to operate according to the preset driving parameters corresponding to the second mode.

[0028] Optionally, if a signal indicating the existence of a second hybrid transmission mode is received while requesting other modes, the hybrid transmission is switched from the first mode to the second mode, and the hybrid transmission is controlled to operate according to the preset driving parameters corresponding to the second mode. The second mode can be any preset mode other than the first mode. For example, if the first mode is a series mode, the second mode could be a parallel mode, a limp-home mode, a hold-current-gear mode, or a transmission lubrication failure mode.

[0029] Since each second mode has a corresponding preset driving parameters, it is only necessary to control the hybrid transmission to operate according to these preset driving parameters to ensure the vehicle's hardware protection requirements, avoid the disadvantages of hardware damage, and improve the vehicle's operational safety and reliability.

[0030] In this embodiment, by acquiring the status data of key components that work in conjunction with the hybrid transmission to transmit power during vehicle operation or power-on, and when this status data matches the matching condition that the hybrid transmission's first mode is unavailable, it is determined that the first mode of the hybrid transmission is unavailable. Then, it checks whether a second mode of the hybrid transmission is available, controls the hybrid transmission to switch from the first mode to the second mode, and controls the hybrid transmission to operate according to the preset driving parameters corresponding to the second mode. In this way, this embodiment can control the unavailable mode of the transmission, ensuring the vehicle's hardware protection requirements, avoiding the disadvantages of hardware damage, and improving the vehicle's operational safety and reliability.

[0031] In some alternative implementations, the method further includes: Step a1: Match the status data with the matching conditions that are not available in each preset mode to obtain the matching results.

[0032] Step a2: Based on the preset mode matched by the matching result, the first mode is used as the mode where the hybrid transmission is not available.

[0033] Optionally, in this application embodiment, multiple preset mode unavailable matching conditions are set in advance, and the status data is matched with each preset mode unavailable matching condition. If the status data matches a preset mode unavailable matching condition, then the preset mode is used as the first mode where the hybrid transmission is unavailable.

[0034] It is understandable that the first mode is included in the preset modes, that is, the first mode is any mode in the preset modes. At this time, it is only necessary to determine which preset mode is unavailable and match the state data with it to determine the mode that the hybrid transmission is currently unavailable.

[0035] In addition, when determining the matching results between state data and each matching condition, it can be based on the similarity of the matches. For example, if the state data is A, and the similarity with a matching condition A' that is not available in a certain preset mode is greater than 95%, then it is considered that the preset mode has been matched.

[0036] In some alternative implementations, the key component is the clutch, and step a1 above includes: Upon receiving the first indication information about the clutch, it is determined that the matching condition for the series mode matched to the hybrid transmission is unavailable, and a matching result is obtained where the first mode is the series mode of the hybrid transmission. The first indication information is used to characterize that the clutch hardware is stuck and cannot be disengaged.

[0037] Optionally, such as Figure 2 As shown, the embodiments of this application mainly relate to embodiments where the series mode of the hybrid transmission is not available.

[0038] Specifically, in series mode, "the engine only generates electricity and does not drive," requiring a separator to disconnect the engine from the transmission chain. However, if the first indication message of a hardware jamming fault code indicating that the clutch cannot be disengaged is received, it is considered that the series mode currently matched with the hybrid transmission is unavailable. In this case, the vehicle's PCM directly sends a series mode unavailable signal to the ECM. Upon receiving this signal, the ECM controls the vehicle to perform corresponding post-processing (e.g., acquiring the vehicle speed; if the speed is less than a threshold, such as 72 km / h, requesting the engine to shut down to avoid unexpected acceleration due to engine torque; if the vehicle is unlocked and before high voltage is applied, requesting neutral gear to avoid unexpected acceleration due to a gear). Additionally, the ECM sends a request to the vehicle to disallow series mode.

[0039] If the current request is in concatenation mode, then switch the current request concatenation mode to another mode other than concatenation mode; otherwise, keep the current request mode.

[0040] In some alternative implementations, the key component is the clutch, and step a1 above includes: Obtain the clutch temperature, clutch speed, and clutch slide speed; When the temperature of the clutch, the speed of the clutch, or the slippage speed of the clutch cannot be matched with the corresponding matching conditions for the parallel mode of the hybrid transmission, the matching result of the first mode is the parallel mode of the hybrid transmission. or, Upon receiving a second instruction regarding the clutch, it is determined that the matching condition corresponding to the parallel mode matched to the hybrid transmission is unavailable, and a matching result for the first mode being the parallel mode of the hybrid transmission is obtained, wherein the second instruction is used to characterize a clutch holding open failure. or, Obtain the mode switching time of the hybrid transmission based on the clutch; If the mode switching time is greater than the switching duration threshold, it is determined that the matching condition for the parallel mode of the hybrid transmission is unavailable, and the matching result is obtained where the first mode is the parallel mode of the hybrid transmission.

[0041] Optionally, if the key component is the clutch, then the clutch status data can be obtained, such as the clutch temperature, clutch speed, and clutch slide speed.

[0042] 1) Judgment based on clutch temperature Clutch temperature = initial clutch temperature + heat absorbed by clutch / heat transfer coefficient (J / Kg*℃) / clutch mass; heat absorbed by clutch = heat generated by clutch - heat carried away by cooling. Heat generated by clutch = torque * slip; heat carried away by cooling = heat transfer coefficient * clutch area * (clutch temperature - oil temperature).

[0043] like Figure 3 When the clutch temperature exceeds the temperature threshold (e.g., 300-350°C, determined by hardware parameters), it is determined that the parallel mode matched to the hybrid transmission cannot use the corresponding matching conditions, and the first mode is the matching result of the hybrid transmission parallel mode.

[0044] 2) Judgment based on clutch speed like Figure 3 Clutch speed too high: If the speed is greater than the first speed threshold (e.g., 6000 rpm), it is determined that the parallel mode matched to the hybrid transmission cannot be used according to the corresponding matching conditions, and the matching result is obtained that the first mode is the parallel mode of the hybrid transmission.

[0045] like Figure 3 If the clutch speed is too low: the speed is less than the second speed threshold (e.g., 3000 rpm), it is determined that the parallel mode matched to the hybrid transmission cannot use the corresponding matching conditions, and the first mode is the matching result of the hybrid transmission parallel mode.

[0046] 3) Judgment based on clutch slip plate speed Sliding shaft speed = (input shaft speed / current gear ratio) - (motor speed / (motor speed ratio * main reducer speed ratio)), where the input shaft speed, current gear ratio, motor speed, motor speed ratio, and main reducer speed ratio can all be obtained in real time.

[0047] If the speed of the clutch slide plate in first gear is greater than the slide plate speed threshold (e.g., 100 rpm), then first gear is unusable. If the speed of the clutch slide plate in second gear exceeds the slide plate speed threshold (e.g., 100 rpm), then second gear is unusable. If the speed of the clutch slide plate in 3rd gear is greater than the slide plate speed threshold (e.g., 100 rpm), then 3rd gear is unusable.

[0048] like Figure 3 If it is determined that the current vehicle gear is unavailable, then the matching condition corresponding to the unavailable parallel mode of the hybrid transmission is considered to be unavailable, and the matching result is obtained with the first mode being the parallel mode of the hybrid transmission.

[0049] In addition, any of the following reasons can cause the clutch to remain open: Figure 3It will also assume that the parallel mode matched to the hybrid transmission is unavailable due to unsuitable matching conditions, resulting in a matching result where the first mode is the parallel mode of the hybrid transmission. At this point, the ECM will receive a second indication regarding the clutch, which characterizes a clutch holding open failure.

[0050] In addition, the causes of clutch holding open failure may include, but are not limited to, the following: (1) Power supply voltage failure; (2) Clutch life cycle end failure; (3) Clutch slippage failure; (4) Clutch solenoid valve open circuit fault; (5) The clutch is short-circuited to the power supply.

[0051] Furthermore, in series mode, the engine only drives the generator to generate electricity (without driving the wheels), and the electric motor drives the vehicle alone. In this case, the clutch must be disengaged. In parallel mode, the engine and electric motor jointly drive the wheels, requiring the clutch to switch from disengaged to engaged. Therefore, the clutch's disengagement / engagement action is the "physical prerequisite" for switching between series and parallel modes. If the time required for the series-to-parallel switching based on the clutch exceeds a switching time threshold (e.g., 1 minute), a timeout fault will occur. Figure 3 It is also believed that the parallel mode matched to the hybrid transmission cannot use the corresponding matching conditions, and the first mode is the matching result of the hybrid transmission parallel mode.

[0052] If the PCM determines that the parallel mode is unavailable, it sends a request to the ECM. Upon receiving the ECM, the ECM sends a request to prohibit parallel operation of the vehicle.

[0053] If the current request is in parallel mode, then switch the current request to a mode other than parallel mode; otherwise, keep the current request mode.

[0054] As an optional embodiment, the method further includes: Step b1: If the status data of the key components matches the trigger data set in the first target mode of the preset mode, determine the matching conditions corresponding to the first target mode, and control the hybrid transmission to run according to the preset driving parameters corresponding to the first target mode.

[0055] Optionally, embodiments of this application also relate to a limp-home mode for hybrid transmissions.

[0056] Specifically, in this application embodiment, the matching conditions corresponding to the hybrid transmission limp-home mode will be set in advance (including but not limited to the following conditions): (1) Low main oil pressure fault; (2) Oil temperature sensor high fault; (3) Oil pump overheating fault; (4) Oil pump 5V power supply failure; (5) Oil pump stall failure; (6) The oil pump has a high power supply voltage; (7) The oil pump power supply voltage is low; (8) The solenoid valve is short-circuited to ground; (9) The solenoid valve is short-circuited to the power supply; (10) The solenoid valve is short-circuited to ground; (11) The solenoid valve is short-circuited to ground; (12) The clutch solenoid valve is short-circuited to ground; (13) Motor voltage overvoltage; (14) High motor voltage, etc.

[0057] Therefore, the key components at this stage can be the motor, clutch, oil pump, solenoid valve, etc., and then the status data of these key components can be obtained, such as oil pump temperature, oil pump voltage, solenoid valve short circuit status, clutch short circuit status, motor voltage, etc.

[0058] If the status data of key components matches the first target mode (i.e., limp home mode), the vehicle's hybrid transmission is controlled to operate according to the preset driving parameters corresponding to the limp home mode: such as limiting the motor torque to 0; requesting the gear to enter N or P, and sending a limp home signal to the ECM. After receiving the signal, if the ECM has not applied high voltage, it requests the N gear and de-energizes and displays an instrument prompt.

[0059] As an optional embodiment, when the key component is a motor, the method further includes: Step c1: If the vehicle's gear position is determined to be the target gear and a command to trigger a fault that keeps the current gear in place is received, the motor's status data is obtained.

[0060] Step c2: When the status data is non-fault data, determine the matching condition corresponding to the unavailable parallel mode of the hybrid transmission, request that all gears except the target gear be unavailable, limit the vehicle speed and prohibit the hybrid transmission from entering parallel mode.

[0061] Step c3: When the status data is fault data, determine that the matching condition corresponding to the unavailable parallel mode of the hybrid transmission is not matched, request that other gears besides the target gear be unavailable, limit the vehicle speed, and request the hybrid transmission to enter parallel mode.

[0062] Optionally, in this embodiment of the application, a fault that triggers the vehicle to maintain its current gear position will be pre-set to maintain the matching conditions corresponding to the current gear operating mode (including but not limited to the following conditions): (1) The vehicle's On / Off valve is stuck; (2) The vehicle's On / off valve signal is short-circuited to ground or open-circuited; (3) Clutch disengagement failure; (4) Failure to shift into neutral; (5) The sinusoidal signal output by the rotary transformer is short-circuited to ground or open-circuited; (6) The cosine wave signal output by the rotary transformer is short-circuited to ground or open-circuited; (7) The sinusoidal signal output by the rotary transformer short-circuits the power supply; (8) The cosine wave signal output by the rotary transformer short-circuits the power supply; (9) 5V power supply failure.

[0063] 1) The PCM obtains the current vehicle gear, such as the target gear, like 1st / 2nd / 3rd gear. If any of the above conditions are triggered, the fault of maintaining the current gear is activated, and then the motor status data is obtained.

[0064] 2) If the status data is non-fault data (e.g., no abnormal fluctuations, no fault code triggering), it is considered that the motor is not faulty. At this time, the PCM sends the information that the other two gears besides the target gear are unavailable to the ECM. The ECM limits the vehicle speed (e.g., 72km / h) according to the current gear and prohibits entering the parallel mode signal.

[0065] 3) If the status data is fault data, it is considered that the motor is faulty. At this time, the PCM sends the information that the other two gears besides the target gear are unavailable to the ECM. The ECM limits the vehicle speed according to the current gear (e.g., 72km / h) and sends a parallel request to the PCM. The PCM follows the ECM's gear request to execute the power control logic.

[0066] As an optional embodiment, when the key component is an oil pump, the method further includes: Step d1: Upon receiving the second instruction information about the oil pump, determine the matching conditions corresponding to the second target mode in the preset modes, and control the hybrid transmission to operate according to the preset driving parameters corresponding to the second target mode. The second instruction information is used to characterize the oil pump lubrication failure.

[0067] Optionally, in this application embodiment, matching conditions corresponding to the lubrication failure mode of the hybrid transmission will be set in advance (including but not limited to the following conditions): (1) Oil pump overheating fault; (2) Oil pump phase current overcurrent fault; (3) Oil pump undervoltage fault; (4) Malfunction of the oil pump Hall sensor; (5) Oil pump stall failure.

[0068] Specifically, when the PCM receives the second indication information about the oil pump lubrication failure, it matches the matching conditions (i.e., the matching conditions mentioned above) corresponding to the second target mode (i.e., the hybrid transmission lubrication failure mode) in the preset mode, and controls the hybrid transmission to operate according to the preset driving parameters corresponding to the second target mode, such as adjusting the torque to 30% of the maximum torque and adjusting the vehicle speed to 72km / h.

[0069] As an alternative embodiment, such as Figure 4 As shown, Figure 4 This is a schematic flowchart of the hybrid transmission control method according to an embodiment of this application. The specific process is as follows: start; Determine if the matching condition for the hybrid transmission series module is unavailable is met; If a match is found, a signal indicating that serial mode is unavailable is issued. Otherwise, determine whether the matching condition of the hybrid transmission parallel module is unavailable is met; If a match is found, a parallel mode unavailable signal is issued; Otherwise, determine whether the matching conditions for the hybrid transmission limp-home mode are met; If a match is found, a hybrid transmission limp-home mode signal will be issued; Otherwise, determine whether the matching condition for the hybrid transmission to maintain the current gear mode is met; If a match is found, a signal will be sent to maintain the current gear mode of the hybrid transmission; Otherwise, determine whether the matching conditions for the hybrid transmission oil pump lubrication failure mode are met; If a match is found, a hybrid transmission oil pump lubrication fault mode signal will be issued; Otherwise, maintain the current control mode of the hybrid transmission.

[0070] This embodiment also provides a hybrid transmission control device for implementing the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0071] This embodiment provides a device for controlling a hybrid transmission, such as... Figure 5 As shown, it includes: The first acquisition module 501 is used to acquire status data corresponding to key components that work together with the hybrid transmission to achieve power transmission during vehicle driving or power-on. The first determining module 502 is used to determine that the first mode of the hybrid transmission is unavailable if the status data matches the matching condition that the hybrid transmission is unavailable in the first mode, and to detect whether there is a second mode available for the hybrid transmission. The control module 503 is used to control the hybrid transmission to switch from the first mode to the second mode if a second mode exists, and to control the hybrid transmission to operate according to the preset driving parameters corresponding to the second mode.

[0072] In this embodiment, by acquiring the status data of key components that work in conjunction with the hybrid transmission to transmit power during vehicle operation or power-on, and when this status data matches the matching condition that the hybrid transmission's first mode is unavailable, it is determined that the first mode of the hybrid transmission is unavailable. Then, it checks whether a second mode of the hybrid transmission is available, controls the hybrid transmission to switch from the first mode to the second mode, and controls the hybrid transmission to operate according to the preset driving parameters corresponding to the second mode. In this way, this embodiment can control the unavailable mode of the transmission, ensuring the vehicle's hardware protection requirements, avoiding the disadvantages of hardware damage, and improving the vehicle's operational safety and reliability.

[0073] In some alternative embodiments, the device further includes: The matching module is used to match the status data with the matching conditions that are not available in each preset mode to obtain the matching result; The settings module is used to set a preset mode based on the matching results, as the first mode when the hybrid transmission is unavailable.

[0074] In some optional implementations, the key component is the clutch, and the matching module is used to determine, upon receiving first indication information about the clutch, that the matching condition corresponding to the series mode of the hybrid transmission is unavailable, and to obtain a matching result where the first mode is the series mode of the hybrid transmission. The first indication information is used to characterize that the clutch hardware is stuck and cannot be disengaged.

[0075] In some alternative implementations, the key component is the clutch, and the matching module is used to acquire the clutch temperature, clutch speed, and clutch slip plate speed. When the temperature of the clutch, the speed of the clutch, or the slippage speed of the clutch cannot be matched with the corresponding matching conditions for the parallel mode of the hybrid transmission, the matching result of the first mode is the parallel mode of the hybrid transmission. or, Upon receiving a second instruction regarding the clutch, it is determined that the matching condition corresponding to the parallel mode matched to the hybrid transmission is unavailable, and a matching result for the first mode being the parallel mode of the hybrid transmission is obtained, wherein the second instruction is used to characterize a clutch holding open failure. or, Obtain the mode switching time of the hybrid transmission based on the clutch; If the mode switching time is greater than the switching duration threshold, it is determined that the matching condition for the parallel mode of the hybrid transmission is unavailable, and the matching result is obtained where the first mode is the parallel mode of the hybrid transmission.

[0076] In some alternative embodiments, the device further includes: The second determining module is used to determine the matching conditions corresponding to the first target mode when the status data of the key components matches the trigger data set in the first target mode in the preset mode, and control the hybrid transmission to run according to the preset driving parameters corresponding to the first target mode.

[0077] In some alternative implementations, where the key component is a motor, the device further includes: The second acquisition module is used to acquire motor status data when the vehicle's gear position is determined to be the target gear and an instruction to trigger a fault to maintain the current gear position is received. The third determining module is used to determine the matching condition corresponding to the unavailability of the parallel mode of the hybrid transmission when the status data is non-fault data, request that other gears besides the target gear be unavailable, limit the vehicle speed and prohibit the hybrid transmission from entering the parallel mode. The fourth determination module is used to determine the matching conditions corresponding to the unavailability of the parallel mode of the hybrid transmission when the status data is fault data, request that other gears besides the target gear be unavailable, limit the vehicle speed, and request the hybrid transmission to enter the parallel mode.

[0078] In some alternative implementations, the key component is an oil pump, and the device also includes: The fifth determining module is used to determine the matching conditions corresponding to the second target mode in the preset mode when receiving the second indication information about the oil pump, and control the hybrid transmission to operate according to the preset driving parameters corresponding to the second target mode. The second indication information is used to characterize the oil pump lubrication failure.

[0079] In this embodiment, the hybrid transmission control device is presented in the form of a functional unit. Here, a unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that execute one or more software or fixed programs, and / or other devices that can provide the above functions.

[0080] This application also provides a computer device having the above-described features. Figure 5 The device shown is for controlling the hybrid transmission.

[0081] Please see Figure 6 , Figure 6 This is a schematic diagram of the structure of a computer device provided in an optional embodiment of this application, such as... Figure 6 As shown, the computer device includes one or more processors 10, memory 20, and interfaces for connecting the components, including high-speed interfaces and low-speed interfaces. The components communicate with each other via different buses and can be mounted on a common motherboard or otherwise installed as needed. The processors can process instructions executed within the computer device, including instructions stored in or on memory to display graphical information of a GUI on external input / output devices (such as display devices coupled to the interfaces). In some alternative implementations, multiple processors and / or multiple buses can be used with multiple memories and multiple memory modules, if desired. Similarly, multiple computer devices can be connected, each providing some of the necessary operations (e.g., as a server array, a group of blade servers, or a multiprocessor system). Figure 6 Take a processor 10 as an example.

[0082] Processor 10 may be a central processing unit, a network processor, or a combination thereof. Processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The programmable logic device may be a complex programmable logic device (CAMP), a field-programmable gate array (FPGA), a general-purpose array logic (GDA), or any combination thereof.

[0083] The memory 20 stores instructions executable by at least one processor 10 to cause at least one processor 10 to perform the method shown in the above embodiments.

[0084] The memory 20 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the computer device. Furthermore, the memory 20 may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some alternative embodiments, the memory 20 may optionally include memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0085] The memory 20 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk or solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0086] The computer device also includes a communication interface 30 for communicating with other devices or communication networks.

[0087] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code, which, when accessed and executed by the computer, processor, or hardware, implements the methods shown in the above embodiments.

[0088] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A method for controlling a hybrid transmission, characterized in that, The method includes: During vehicle operation or power-on, acquire status data corresponding to key components that work in conjunction with the hybrid transmission to achieve power transmission; If the status data matches the condition that the hybrid transmission is unavailable in the first mode, then it is determined that the first mode of the hybrid transmission is unavailable, and it is detected whether there is a second mode available for the hybrid transmission. If the second mode exists, the hybrid transmission is controlled to switch from the first mode to the second mode, and the hybrid transmission is controlled to operate according to the preset driving parameters corresponding to the second mode.

2. The method according to claim 1, characterized in that, The method further includes: The status data is matched with the matching conditions that are not available in each preset mode to obtain the matching results; The preset pattern matched by the matching result is used as the first mode where the hybrid transmission is unavailable.

3. The method according to claim 2, characterized in that, The key component is a clutch. The process of matching the state data with matching conditions that are unavailable in each preset mode to obtain matching results includes: Upon receiving a first indication message regarding the clutch, it is determined that the matching condition corresponding to the series mode of the hybrid transmission is unavailable, and a matching result is obtained where the first mode is the series mode of the hybrid transmission. The first indication message is used to characterize that the clutch hardware is stuck and cannot be disengaged.

4. The method according to claim 2, characterized in that, The key component is a clutch. The process of matching the state data with matching conditions that are unavailable in each preset mode to obtain matching results includes: The temperature, rotational speed, and sliding plate speed of the clutch are obtained. When the temperature of the clutch, the speed of the clutch, or the slippage speed of the clutch cannot be matched with the corresponding matching conditions for the parallel mode of the hybrid transmission, the matching result of the first mode being the parallel mode of the hybrid transmission is obtained. or, Upon receiving a second indication message regarding the clutch, it is determined that the matching condition corresponding to the parallel mode of the hybrid transmission is unavailable, and a matching result for the first mode being the parallel mode of the hybrid transmission is obtained, wherein the second indication is used to characterize the clutch holding open fault. or, Obtain the mode switching time of the hybrid transmission based on the clutch; If the mode switching time is greater than the switching duration threshold, it is determined that the matching condition corresponding to the parallel mode of the hybrid transmission is unavailable, and the matching result of the first mode being the parallel mode of the hybrid transmission is obtained.

5. The method according to claim 2, characterized in that, The method further includes: If the status data of the key component matches the trigger data set in the first target mode of the preset mode, the matching condition corresponding to the first target mode is determined, and the hybrid transmission is controlled to operate according to the preset driving parameters corresponding to the first target mode.

6. The method according to claim 1, characterized in that, When the key component is a motor, the method further includes: If the vehicle's gear position is determined to be the target gear and an instruction to trigger a fault that keeps the current gear in place is received, the status data of the motor is acquired. When the status data is non-fault data, it is determined that the matching condition corresponding to the unavailable parallel mode of the hybrid transmission is not available, and it is requested that other gears besides the target gear be unavailable, and the vehicle speed is limited and the hybrid transmission is prohibited from entering the parallel mode. When the status data is fault data, it is determined that no matching condition corresponding to the unavailable parallel mode of the hybrid transmission is found, and it is requested that other gears besides the target gear be unavailable, and the vehicle speed is limited and the hybrid transmission is requested to enter parallel mode.

7. The method according to claim 2, characterized in that, The key component is an oil pump, and the method further includes: Upon receiving a second indication message regarding the oil pump, the system determines the matching conditions corresponding to the second target mode in the preset modes and controls the hybrid transmission to operate according to the preset driving parameters corresponding to the second target mode. The second indication message is used to characterize the oil pump lubrication failure.

8. A device for controlling a hybrid transmission, characterized in that, The device includes: The first acquisition module is used to acquire status data corresponding to key components that work together with the hybrid transmission to achieve power transmission during vehicle operation or power-on. The first determining module is used to determine that the first mode of the hybrid transmission is unavailable if the status data matches the matching condition that the hybrid transmission is unavailable in the first mode, and to detect whether there is a second mode available for the hybrid transmission. The control module is used to control the hybrid transmission to switch from the first mode to the second mode if the second mode exists, and to control the hybrid transmission to operate according to the preset driving parameters corresponding to the second mode.

9. A computer device, characterized in that, include: A memory and a processor are communicatively connected, the memory storing computer instructions, and the processor executing the computer instructions to perform the hybrid transmission control method of any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to perform the method of controlling the hybrid transmission as described in any one of claims 1 to 7.

Images