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CN-122008948-A - Parking control method and device for charging vehicle, medium and product

CN122008948ACN 122008948 ACN122008948 ACN 122008948ACN-122008948-A

Abstract

The invention relates to the technical field of electric automobiles, and discloses a parking control method and device for a charged vehicle, the vehicle, a medium and a product. After the parking calipers are clamped in place, the charging current of the vehicle during boosting and charging is gradually increased, the parking moment and the charging current are not required to be matched by combining different vehicle types, and the software reusability is high. When the movement of the vehicle is detected based on the wheel speed signal of the vehicle, a target charging current is obtained by reducing the current charging current, and boost charging is performed based on the target charging current, so that unexpected torque generated by the boost charging is weakened. And meanwhile, the current clamping force is improved, the target clamping force is obtained, and the parking calipers are controlled to clamp based on the target clamping force. Therefore, when the vehicle generates small unexpected movement, the vehicle is actively intervened by reducing the charging current and improving the clamping force, so that the uncontrollable movement of the vehicle is avoided.

Inventors

  • LI GUANTING
  • HU QUN
  • HE YONG
  • HUANG ZONGYUAN

Assignees

  • 重庆长安汽车股份有限公司

Dates

Publication Date
20260512
Application Date
20260313

Claims (12)

  1. 1. A parking control method of a charged vehicle, characterized by comprising: responding to a boosting charging request of a vehicle, and controlling a parking caliper to clamp with a preset clamping force; when the clamping of the parking calipers in place is detected, the charging current of the vehicle during boosting charging is increased, and the wheel speed signal of the vehicle is monitored; when the vehicle is determined to move based on the wheel speed signal, reducing the current charging current to obtain a target charging current, and improving the current clamping force to obtain a target clamping force; and performing boost charging based on the target charging current, and controlling the parking caliper to clamp based on the target clamping force.
  2. 2. The method of parking control of a charged vehicle according to claim 1, wherein the wheel speed signal includes a first number of pulses of a left parking wheel speed sensor and a second number of pulses of a right parking wheel speed sensor acquired in a plurality of consecutive periods, determining that the vehicle is moving based on the wheel speed signal, comprising: calculating the sum of the first pulse number and the second pulse number acquired in each period; judging whether the vehicle has a moving trend in each period based on the sum of the pulse numbers; And if the vehicle is detected to have a moving trend in a continuous first preset number of periods, determining that the vehicle moves.
  3. 3. The parking control method of the charge vehicle according to claim 2, wherein the determining whether the vehicle has a moving tendency in each cycle based on the sum of the pulse numbers includes: For each period, if the sum of the pulse numbers corresponding to the periods is detected to exceed the preset pulse number, the vehicle has a moving trend in the period.
  4. 4. The method for parking control of a charged vehicle according to claim 1, wherein said wheel speed signal includes a rotor angle variation amount of a motor position sensor acquired in a plurality of consecutive periods, and determining that said vehicle is moving based on said wheel speed signal includes: for each period, if the rotor angle change corresponding to the period is detected to exceed a preset angle, determining that the vehicle has a moving trend in the period; and if the vehicle is detected to have a moving trend in a second preset number of periods continuously, determining that the vehicle moves.
  5. 5. The parking control method of the charging vehicle according to any one of claims 1 to 4, characterized in that, after controlling the parking caliper to clamp based on the target clamping force, the method further comprises: recording the re-clamping times, and judging whether the re-clamping times exceed preset re-clamping times or not; And if the re-clamping frequency does not exceed the preset re-clamping frequency, returning to the step of monitoring the wheel speed signal of the vehicle.
  6. 6. The parking control method of the charge vehicle according to claim 5, characterized in that the method further comprises: And stopping boosting charging and sending a charging abnormality prompt to a user if the re-clamping frequency exceeds the preset re-clamping frequency.
  7. 7. The parking control method of a charged vehicle according to any one of claims 1 to 4, characterized in that the increasing of the charging current of the vehicle at the time of boost charging includes: gradually increasing the charging current of the vehicle during boost charging according to a preset rate; the reducing the present charging current includes: And reducing the current charging current according to the preset reduction amount.
  8. 8. The parking control method of a charged vehicle according to any one of claims 1 to 4, characterized in that, after responding to a boost charge request of the vehicle, the method further comprises: And refusing to respond to the parking caliper release request of the vehicle.
  9. 9. A parking control apparatus for a charged vehicle, characterized by comprising: the first processing module is used for responding to a boosting charging request of the vehicle and controlling the parking calipers to clamp with a preset clamping force; The second processing module is used for improving the charging current of the vehicle during boosting charging after detecting that the parking calipers are clamped in place and monitoring the wheel speed signal of the vehicle; The third processing module is used for reducing the current charging current to obtain a target charging current and improving the current clamping force to obtain a target clamping force when the vehicle is determined to move based on the wheel speed signal; And the fourth processing module is used for boosting and charging based on the target charging current and controlling the parking caliper to clamp based on the target clamping force.
  10. 10. A vehicle, characterized by comprising: A memory and a processor communicatively connected to each other, the memory having stored therein computer instructions, the processor executing the computer instructions to perform the method of parking control of the charge vehicle of any one of claims 1 to 8.
  11. 11. A computer-readable storage medium having stored thereon computer instructions for causing a computer to execute the parking control method of the charge vehicle according to any one of claims 1 to 8.
  12. 12. A computer program product comprising computer instructions for causing a computer to execute the parking control method of the charge vehicle according to any one of claims 1 to 8.

Description

Parking control method and device for charging vehicle, medium and product Technical Field The invention relates to the technical field of electric automobiles, in particular to a parking control method and device for a charging vehicle, the vehicle, a medium and a product. Background When the electric vehicle is charged, the output voltage of the charging pile needs to be adapted to the voltage of the battery of the whole vehicle, and when the voltage of the battery is higher than the maximum output voltage of the charging pile, the whole vehicle needs to be charged after boosting. However, in the boosting charging process, a certain unexpected torque is generated by the current generated by the motor winding, so that unexpected movement or shaking of the vehicle is easily caused, and the safety of the vehicle is affected. The prior art uses a physical lock structure to prevent unintended torque during boost charging from moving the vehicle, but is not adaptable in new energy automobiles. In the prior art, the optimal charging current is obtained by looking up a table based on the gradient parking component torque and the electric drive maximum charging torque, but different parameters are required to be matched for each vehicle type, and the software reusability is not high. In the prior art, when unexpected torque is generated by a vehicle, the parking is released, the motor is actively driven to rotate, the motor rotor is rotated to a position which does not generate the unexpected torque, and then the parking is clamped again, but the method still causes unexpected movement of the vehicle, and the safety risk exists. Disclosure of Invention The invention provides a parking control method, a device, a vehicle, a medium and a product of a charging vehicle, which are used for solving the problem that the vehicle is easy to move unexpectedly in the boosting charging process and has safety risks. In a first aspect, the present invention provides a parking control method of a charged vehicle, the method comprising: responding to a boosting charging request of a vehicle, and controlling a parking caliper to clamp with a preset clamping force; When the clamping of the parking calipers is detected to be in place, the charging current of the vehicle during boosting charging is increased, and the wheel speed signal of the vehicle is monitored; when the movement of the vehicle is determined based on the wheel speed signal, the current charging current is reduced, the target charging current is obtained, and the current clamping force is improved, so that the target clamping force is obtained; And carrying out boost charging based on the target charging current, and controlling the parking caliper to clamp based on the target clamping force. When the vehicle starts to boost and charge, the parking calipers are controlled to clamp with preset clamping force. After the parking calipers are clamped in place, the charging current of the vehicle during boosting and charging is gradually increased, the parking moment and the charging current are not required to be matched by combining different vehicle types, and the software reusability is high. When the movement of the vehicle is detected based on the wheel speed signal of the vehicle, a target charging current is obtained by reducing the current charging current, and boost charging is performed based on the target charging current, so that unexpected torque generated by the boost charging is weakened. And meanwhile, the current clamping force is improved, the target clamping force is obtained, and the parking calipers are controlled to clamp based on the target clamping force. Therefore, when the vehicle generates small unexpected movement, the vehicle is actively intervened by reducing the charging current and improving the clamping force, so that the uncontrollable movement of the vehicle is avoided. In an alternative embodiment, the wheel speed signal includes a first number of pulses of the left and a second number of pulses of the right park wheel speed sensor acquired over a plurality of consecutive periods, and determining that the vehicle is moving based on the wheel speed signal includes: calculating the sum of the first pulse number and the second pulse number acquired in each period; judging whether the vehicle has a moving trend in each period based on the sum of the pulse numbers; and if the vehicle is detected to have a moving trend in a continuous first preset number of periods, determining that the vehicle moves. The invention determines that the vehicle has a moving trend when the sum of the pulse numbers exceeds the preset pulse number by calculating the sum of the pulse numbers of the first pulse number and the second pulse number acquired in each period. And when detecting that the sum of the pulse numbers of the vehicle in the continuous first preset number of cycles exceeds the preset pulse number, judging that the vehicle moves. The method can e