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CN-122014846-A - Vehicle gear determination method and device, electronic equipment and vehicle

CN122014846ACN 122014846 ACN122014846 ACN 122014846ACN-122014846-A

Abstract

The application relates to the technical field of vehicles and discloses a vehicle gear determining method, a device, electronic equipment and a vehicle, wherein the method comprises the steps of acquiring the motor rotation speed of a first motor and the running speed of the vehicle, which are related to the input end of a transmission, when a controller of the transmission is electrified and restarted in the running process of the vehicle; and when the slip is a first gear with a preset value and the first gear is the same as a second gear stored in the vehicle, determining the first gear as a target gear of the vehicle, wherein the second gear is determined when the vehicle performs a gear shifting operation last time before the controller is electrified and restarted. The application can rapidly determine the gear of the vehicle under the condition that the controller of the transmission is electrified and restarted in the running process of the vehicle, thereby improving the running safety.

Inventors

  • GAO YANG
  • LIU YIQIANG
  • LIU JIANGFENG
  • WANG RUIGUANG
  • GAO ZHIDONG
  • Xin Dongyang
  • WANG CONGQIAN

Assignees

  • 极光湾(宁波)智能科技有限公司
  • 极光湾(义乌)传动系统有限公司
  • 极光湾科技有限公司

Dates

Publication Date
20260512
Application Date
20260320

Claims (10)

  1. 1. A vehicle gear determination method, characterized in that the method comprises: When a controller of a transmission is electrified and restarted during running of a vehicle, acquiring the motor speed of a first motor and the running speed of the vehicle which are related to an input end of the transmission; when the motor rotating speed is larger than a motor rotating speed threshold value and the running speed is larger than a running speed threshold value, acquiring the slip corresponding to each gear of the transmission; And when a first gear with the slip being a preset value exists and the first gear is identical to a second gear stored in the vehicle, determining the first gear as a target gear of the vehicle, wherein the second gear is determined when the vehicle performs a gear shifting operation last time before the vehicle is restarted by power on a controller.
  2. 2. The method according to claim 1, wherein the method further comprises: When the first gear is different from the second gear stored in the vehicle, determining that the target gear of the vehicle is an unknown gear; The clutch of the vehicle is controlled to be opened, and the vehicle is driven to run by controlling a second motor associated with the output end of the transmission.
  3. 3. The method of claim 1, wherein after determining the first gear as the target gear of the vehicle, the method further comprises: the clutch of the vehicle is controlled to be closed, and the vehicle is driven to run by controlling a third motor and an engine associated with the engine.
  4. 4. The method according to claim 1, wherein the method further comprises: And when the motor rotating speed is smaller than or equal to the motor rotating speed threshold value or the running speed is smaller than or equal to the running speed threshold value, determining whether the vehicle executes a gear shifting operation, and when the vehicle is determined to execute the gear shifting operation, storing a gear after the gear shifting operation and determining the gear after the gear shifting operation as a target gear of the vehicle.
  5. 5. The method according to claim 1, wherein the method further comprises: and when the first gear with the slip of the preset value does not exist, determining that the target gear of the vehicle is a neutral gear.
  6. 6. The method according to claim 1, wherein the method further comprises: establishing a mapping relation between the motor rotating speed of the first motor and the running speed of the vehicle based on the gear transmission ratio of the transmission; Determining an initial motor rotating speed threshold value and an initial running speed threshold value according to the mapping relation; And adjusting the initial motor speed threshold value and the initial running speed threshold value according to the running road condition of the vehicle and the real-time working condition of the transmission to obtain the motor speed threshold value and the running speed threshold value.
  7. 7. The method of claim 6, wherein said adjusting said initial motor speed threshold and said initial travel speed threshold based on said vehicle traveling road conditions and said transmission real-time conditions to obtain said motor speed threshold and said travel speed threshold comprises: determining basic adjustment parameters according to the road conditions of the running vehicles and the real-time working conditions of the transmission; determining a rotating speed correction coefficient and a speed correction coefficient corresponding to the basic adjustment parameter according to a preset correction coefficient table; Determining the motor rotation speed threshold value according to the rotation speed correction coefficient and the initial motor rotation speed threshold value; and determining the running speed threshold according to the speed correction coefficient and the initial running speed threshold.
  8. 8. A vehicle gear position determining apparatus, characterized by comprising: The first processing module is used for acquiring the motor rotation speed of the first motor and the running speed of the vehicle which are related to the input end of the transmission when the controller of the transmission is electrified and restarted during the running process of the vehicle; The second processing module is used for acquiring the slip corresponding to each gear of the transmission when the motor rotating speed is greater than a motor rotating speed threshold value and the running speed is greater than a running speed threshold value; And the third processing module is used for determining the first gear as the target gear of the vehicle when the first gear with the slip being a preset value exists and is the same as the second gear stored by the vehicle, wherein the second gear is determined when the vehicle performs a gear shifting operation last time before being restarted electrically on the controller.
  9. 9. An electronic device, comprising: a memory and a processor in communication with each other, the memory having stored therein computer instructions which, upon execution, cause the processor to perform the method of any of claims 1 to 7.
  10. 10. A vehicle comprising the vehicle gear determining device according to claim 8 or the electronic apparatus according to claim 9, so that the vehicle implements the method according to any one of claims 1 to 7.

Description

Vehicle gear determination method and device, electronic equipment and vehicle Technical Field The application relates to the technical field of vehicles, in particular to a vehicle gear determining method and device, electronic equipment and a vehicle. Background With the development of the electric control technology of an automobile power system, the transmission is used as a core component for vehicle power transmission, the accuracy and instantaneity of gear identification directly determine the running safety and power transmission efficiency of a vehicle, and the relative position sensor is widely applied to a gear identification system of the transmission due to the characteristics of high detection accuracy and high response speed, so that the transmission becomes the main stream configuration in the current electric control field of the vehicle transmission. At present, a mode of identifying gears by a relative position sensor is adopted, and a controller can acquire detection signals of the relative position sensor in real time so as to judge the current engaged gears of the transmission and use the gears for controlling the power of the vehicle. When the controller of the transmission is restarted, the current gear data of the vehicle can be lost, and at the moment, the controller is required to acquire sensor signals again and complete gear calibration in a gear relearning mode, so that accurate gear identification can be realized again. However, a certain time is required in the gear relearning process, so that the situation that the gears cannot be recognized in time can occur, and the driving safety of the vehicle is affected. Disclosure of Invention The application provides a vehicle gear determining method, a device, electronic equipment and a vehicle, and aims to solve the problem that when a controller of a transmission is restarted, the gear cannot be recognized in time, and the driving safety of the vehicle is affected. In a first aspect, the present application provides a vehicle gear determination method, the method comprising: When a controller of a transmission is electrified and restarted during running of a vehicle, acquiring the motor speed of a first motor and the running speed of the vehicle which are related to an input end of the transmission; when the motor rotating speed is larger than a motor rotating speed threshold value and the running speed is larger than a running speed threshold value, acquiring the slip corresponding to each gear of the transmission; And when a first gear with the slip being a preset value exists and the first gear is identical to a second gear stored in the vehicle, determining the first gear as a target gear of the vehicle, wherein the second gear is determined when the vehicle performs a gear shifting operation last time before the vehicle is restarted by power on a controller. When the transmission controller is powered on and restarted during vehicle running, the method provided by the embodiment obtains the first motor rotating speed and the vehicle running speed associated with the transmission input end, so as to judge the vehicle running state through the double-speed parameter, eliminate invalid detection caused by insufficient sensor precision and provide an effective data basis for subsequent gear identification. And the gear slip is obtained only when the two speeds exceed the corresponding threshold value, and the slip has identifiability under the condition, so that the erroneous judgment caused by no change of the slip under the low speed can be avoided. The first gear is screened through the slip preset value, and the second gear stored in the last gear shifting operation before restarting is combined with the controller to perform consistency verification, so that the matched gear can be accurately locked and determined to be the target gear through double verification, the problem that the gear is lost and cannot be recognized in time after restarting the controller in the driving process is effectively solved, the gear is not required to be learned again after stopping, the accuracy and timeliness of gear recognition are guaranteed, and the problem of gear recognition is avoided to influence driving safety. In one possible implementation, the method further includes: When the first gear is different from the second gear stored in the vehicle, determining that the target gear of the vehicle is an unknown gear; The clutch of the vehicle is controlled to be opened, and the vehicle is driven to run by controlling a second motor associated with the output end of the transmission. The method provided by the embodiment has the advantages that the first gear is different from the second gear stored in the vehicle, so that the gear screened by the slip is inconsistent with the latest gear stored in the nonvolatile memory, the target gear is determined to be the unknown gear, the power matching error caused by misjudging the gear can be a