A mining mode control method for a pure electric power system

Abstract

The present invention discloses a mining mode control method for a pure electric power system. It includes real-time acquisition of the real-time vehicle speed V1 of the vehicle in the 1st gear or the 2nd gear; according to the real-time vehicle speed V1 of the vehicle in the 1st gear or the 2nd gear, controlling the real-time vehicle speed V1 of the vehicle in the 1st gear to be less than or equal to the maximum speed limit of 10km / h allowed in the 1st gear, and controlling the real-time vehicle speed V1 of the vehicle in the 2nd gear to be less than or equal to the maximum speed limit of 20km / h allowed in the 2nd gear; and real-time monitoring of the position state of the gear position; according to the position state of the gear position, if the gear position changes by more than 8%, air is introduced through a pneumatic shift mechanism to restore the gear position to a normal state. The present invention is simple to operate, not only can the gearbox be locked in the 1st gear or the 2nd gear, but also through graded protection under different working modes, it can avoid entering an unexpected gear position, thereby improving the reliability of the vehicle.

Description

Technical Field

[0001] The present invention belongs to the technical field of new energy vehicle driving power, and in particular relates to a mining mode control method for a pure electric power system. Background Art

[0002] Existing new energy pure electric vehicles generally use a drive motor assembly and a brake transmission system as the power system of the whole vehicle. The automatic transmission system generally uses a 4-speed or 6-speed mechanical automatic transmission. When shifting gears, it is necessary to coordinate and control the motor's torque clearing, speed regulation and torque return. Affected by the vehicle under different working conditions, the gear shifting time and power interruption time are also different.

[0003] For mining vehicles operating off-road, if they need to operate inside mines, the quality of the road surface is poor and there are soft roads. If the vehicle is shifting gears while driving, there is a possibility of failure to shift gears. Therefore, in mining applications, the gear is generally locked to 1st gear, and the vehicle does not actively shift gears when driving in the mine. However, in actual use, when the gearbox is working in 1st gear, it is easy to mistakenly engage in other gears or return to neutral, resulting in a gear shift failure when re-engaging in 1st gear, affecting the operation of the vehicle.

[0004] Therefore, the objective defects of the prior art are: 1. It is necessary to lock the 1st gear in the M mode of the automatic transmission, and the operation process is relatively complicated; 2. After the automatic transmission returns to neutral, re-engagement may cause the risk of gear shifting failure; 3. The reverse gear implementation method under different gears is not considered; 4. The in-gear protection measures to prevent gear shifting are insufficient. Summary of the invention

[0005] The purpose of the present invention is to solve the deficiencies of the above-mentioned background technology and to provide a mining mode control method for a pure electric power system.

[0006] The technical solution adopted by the present invention is: a mining mode control method of a pure electric power system, comprising:

[0007] Real-time collection of the vehicle's real-time speed V1 in 1st or 2nd gear;

[0008] According to the real-time speed V1 of the vehicle in the 1st gear or the 2nd gear, the real-time speed V1 of the vehicle in the 1st gear is controlled to be less than or equal to the maximum speed limit of 10km / h for the 1st gear, and the default maximum speed is 5km / h; the real-time speed V1 of the vehicle in the 2nd gear is controlled to be less than or equal to the maximum speed limit of 20km / h for the 2nd gear, and the default maximum speed is 10km / h;

[0009] Real-time monitoring of gear position status;

[0010] According to the position status of the gear position, if the gear position changes by more than 8%, air is introduced through the pneumatic shift mechanism to restore the gear position to a normal state.

[0011] A pure electric power mining mode system, comprising

[0012] The vehicle speed sensor is used to collect the real-time vehicle speed V1 in the 1st or 2nd gear;

[0013] The speed limit module is used to control the real-time speed V1 of the vehicle in the first gear to be less than or equal to the maximum speed limit of 10km / h in the first gear according to the real-time speed V1 of the vehicle in the first gear or the second gear, and the default maximum speed is 5km / h; control the real-time speed V1 of the vehicle in the second gear to be less than or equal to the maximum speed limit of 20km / h in the second gear, and the default maximum speed is 10km / h;

[0014] The displacement sensor is installed on the gear shift mechanism to monitor the position status of the gear in real time;

[0015] The gearbox controller is used to adjust the gear position according to the gear position status. If the gear position changes by more than 8%, air is introduced through the pneumatic shift mechanism to restore the gear position to a normal state.

[0016] Also includes

[0017] Entering mining mode: After the vehicle is ignited and high voltage is applied, when the gearbox is in neutral, step on the brake pedal, shift the shift handle to D gear, press the P button on the shift handle to enter, and the gear will automatically shift to 1st gear;

[0018] Working gear selection: Use the + / - mode on the shift handle to select the appropriate target gear 1 or 2 according to the actual application scenario and working conditions;

[0019] Working gear memory: The default starting gear in P mode is locked according to the last three consecutive starting gear memories;

[0020] Mining mode activation display: After pressing the P button, the instrument displays a prompt message, which disappears after 5 seconds; the word P1 is displayed in the instrument gear display area, and the P1 user operation mode is entered at this time;

[0021] User selection of mining mode: Press the P button twice in 3 seconds, the instrument gear display area displays P2 user operation mode, and then press the P button twice in 3 seconds to display P3 user operation mode, and switch between the three user operation modes of P1, P2 and P3.

[0022] The vehicle starts to move: Release the brake pedal at this time, and press the accelerator to start the vehicle moving.

[0023] The driver adjusts the vehicle's maximum speed through the + and - requests on the shift handle. By increasing +, the maximum speed increases by 50% each time, and by decreasing -, the maximum speed decreases by 50% each time.

[0024] It also includes reverse operation: when the vehicle stops in place and the speed is zero, step on the brake pedal and put the handle in R gear; then release the brake pedal, step on the accelerator, and the motor directly realizes the reverse operation of the vehicle through the reversing controller. There will be a beep reminder when reversing; if the speed is not zero, it will not respond to the reverse operation. You need to stop the car and re-engage the R gear to achieve reverse gear.

[0025] It also includes neutral gear operation; the driver activates the N gear through the handle. At this time, the AMT does not shift gears, but only simulates and feeds back the neutral gear signal to the instrument through the communication signal; at this time, the motor torque and motor speed are reset to zero, and the whole vehicle has no power output.

[0026] It also includes forward operation: when the shift handle is in D gear and the accelerator is pressed, the vehicle can move forward.

[0027] It also includes the process of driving in mining mode, if you drive on a better road outside the mine, exit the mining mode and switch to the shifting mode for driving on ordinary roads.

[0028] When the vehicle stops and the speed is zero, press the E / P button twice in succession within 3 seconds. A prompt message will be displayed on the instrument. After the prompt message flashes for 5 seconds, the letter E will be displayed in the gear display area of ​​the instrument. The vehicle will resume normal driving status and respond to any operation of the shift handle to achieve gear shifting and neutral gear, and realize manual or automatic gear shifting.

[0029] If you need to memorize the usage data of different drivers or different mining conditions, when exiting the mining mode, press the E / P button 3 times in 3 seconds to achieve it; it mainly records the maximum forward and reverse speeds.

[0030] The present invention is easy to operate and can not only lock the gearbox in the first gear or the second gear, but also prevent the vehicle from entering an unexpected gear position through graded protection in different working modes, thereby improving the reliability of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The first stage of the present invention is a schematic diagram of the principle of entering the mining mode;

[0032] Figure 2 The second stage of the present invention is a schematic diagram of the operation principle of the mining mode;

[0033] Figure 3 The third stage of the present invention is a schematic diagram of the mining mode exit principle;

[0034] Figure 4The fourth stage of the present invention is a schematic diagram of the mining mode memory principle. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not constitute a limitation on the present invention.

[0036] The mining mode control method of the present invention includes four stages: entering the mining mode, running the mining mode, exiting the mining mode, and memorizing the mining mode. The control method is described in stages below.

[0037] The gear shift handle of the transmission should have buttons with the following functions and modes: A (automatic shift) / M (manual shift) mode, E (economy shift) / P (power shift) mode, and N (neutral) mode, gear + / - mode, etc.

[0038] The first stage is to enter the mining mode: (see Figure 1 Stage shown)

[0039] Entering mining mode: After the vehicle is ignited and high voltage is applied, when the gearbox is in neutral, step on the brake pedal, shift the shift handle to D gear, press the P button on the shift handle to enter, and the gear will automatically shift to 1st gear (default gear).

[0040] Working gear selection: Through the + / - mode on the shift handle, you can select the appropriate target gear according to the actual application scenario and working conditions (to protect safety, the gear is limited to only 1st or 2nd gear).

[0041] Working gear memory: The default starting gear in P mode can be locked according to the memory of the last three consecutive starting gears.

[0042] Mining mode activation display: After pressing the P button, the instrument displays a prompt message (mining mode activated), which disappears after 5 seconds; the word P1 is displayed in the instrument gear display area, and the P1 user operation mode is entered.

[0043] User selection of mining mode: Press the P button twice in 3 seconds, the instrument gear display area will display the P2 user operation mode, and then press the P button twice in 3 seconds to display the P3 user operation mode. You can switch between the three user operation modes: P1, P2, and P3.

[0044] The vehicle starts to move: Release the brake pedal at this time, and press the accelerator to start the vehicle moving.

[0045] The second stage is the mining mode operation: (see Figure 2 Stage shown)

[0046] Speed ​​limit and adjustment: The maximum speed limit allowed in 1st gear is 10km / h, and the default maximum speed is 5km / h; the maximum speed limit allowed in 2nd gear is 20km / h, and the default maximum speed is 10km / h; the driver can adjust the vehicle's maximum speed through the + and - requests on the shift handle. By increasing +, the maximum speed can be increased by 50% each time, and by decreasing -, the maximum speed can be reduced by 50% each time.

[0047] Reverse operation: When the vehicle stops and the speed is zero, press the brake pedal and shift the handle to R gear; then release the brake pedal and step on the accelerator. The motor directly reverses the vehicle through the reversing controller. There will be a buzzer reminder when reversing; if the speed is not zero, it will not respond to the reverse operation. You need to stop the car and re-shift to R gear to achieve reverse gear.

[0048] Running in neutral gear; the driver activates the N gear through the handle. At this time, the AMT does not shift gears, but only simulates the neutral gear signal through the communication signal and feeds back the neutral gear signal to the instrument. At this time, the motor torque and motor speed are reset to zero, and the whole vehicle has no power output.

[0049] Forward operation: With the shift lever in D gear and the accelerator depressed, the vehicle can move forward.

[0050] Gear position detection protection: During the operation of the mining mode, the gearbox controller monitors the gear position status in real time through the displacement sensor on the gear shift mechanism; if the gear position changes by more than 8%, air is introduced through the pneumatic shift mechanism to restore the gear position to a normal state, ensuring that the gear will not be disengaged and providing reliability for vehicle operation.

[0051] The third stage is the exit from the mining mode: (see Figure 3 Stage shown)

[0052] When driving in mining mode, if you reach a better road outside the mine, you can exit mining mode and switch to the shifting mode for driving on ordinary roads.

[0053] At this time, the vehicle stops and the speed is zero. Press the E / P button twice in succession within 3 seconds, and a prompt message will be displayed on the instrument (exit mining mode). After the prompt message flashes for 5 seconds, the letter E will be displayed in the gear display area of ​​the instrument. The vehicle resumes normal driving state and can respond to any operation of the shift handle to achieve gear shifting and neutral gear in different gears, manual shifting or automatic shifting, etc.

[0054] The fourth stage is mining mode memory: (see Figure 4 Stage shown)

[0055] If you need to memorize the usage data of different drivers or different mining conditions, you can do so by pressing the E / P button three times in three seconds when exiting the mining mode; it mainly records the maximum forward and reverse speeds, etc.

[0056] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A mining mode control method for a pure electric power system, characterized in that: include Real-time collection of the vehicle's real-time speed V1 in 1st or 2nd gear; According to the real-time speed V1 of the vehicle in the first gear or the second gear, the real-time speed V1 of the vehicle in the first gear is controlled to be less than or equal to the maximum speed limit of 10 km / h for the first gear, and the real-time speed V1 of the vehicle in the second gear is controlled to be less than or equal to the maximum speed limit of 20 km / h for the second gear; Real-time monitoring of gear position status; According to the position status of the gear, if the gear position changes by more than 8%, air is introduced through the pneumatic shift mechanism to restore the gear position to a normal state; Entering mining mode: After the vehicle is ignited and high voltage is applied, when the gearbox is in neutral, step on the brake pedal, shift the shift handle to D gear, press the P button on the shift handle to enter, and the gear will automatically shift to 1st gear; Working gear selection: Use the + / - mode on the shift handle to select the appropriate target gear 1 or 2 according to the actual application scenario and working conditions; Working gear memory: The default starting gear in P mode is locked according to the last three consecutive starting gear memories; Mining mode activation display: After pressing the P button, the instrument displays a prompt message, which disappears after 5 seconds; The word P1 is displayed in the instrument gear display area, and the operation mode of the P1 user is entered; User selection of mining mode: Press the P button twice within 3 seconds, the instrument gear display area will display the P2 user operation mode, and then press the P button twice within 3 seconds to display the P3 user operation mode. Switch between the three user operation modes of P1, P2 and P3; The vehicle starts to move: Release the brake pedal at this time, and press the accelerator to start the vehicle moving.

2. A mining mode control method for a pure electric power system according to claim 1, characterized in that: include The vehicle speed sensor is used to collect the real-time vehicle speed V1 in the 1st or 2nd gear; A speed limit module is used to control the real-time speed V1 of the vehicle in the first gear to be less than or equal to the maximum speed limit of 10 km / h in the first gear, and to control the real-time speed V1 of the vehicle in the second gear to be less than or equal to the maximum speed limit of 20 km / h in the second gear according to the real-time speed V1 of the vehicle in the first gear or the second gear; The displacement sensor is installed on the gear shift mechanism to monitor the position status of the gear in real time; The gearbox controller is used to adjust the gear position according to the gear position status. If the gear position changes by more than 8%, air is introduced through the pneumatic shift mechanism to restore the gear position to a normal state.

3. A mining mode control method for a pure electric power system according to claim 1, characterized in that: The driver adjusts the vehicle's maximum speed through the + and - requests on the shift handle. By increasing +, the maximum speed increases by 50% each time, and by decreasing -, the maximum speed decreases by 50% each time.

4. A mining mode control method for a pure electric power system according to claim 1, characterized in that: It also includes reverse operation: when the vehicle stops in place and the speed is zero, press the brake pedal and put the handle in R gear; then release the brake pedal and step on the accelerator, the motor directly reverses the controller to realize the reverse operation of the vehicle, and there will be a buzzer reminder when reversing; If the vehicle speed is not zero, it will not respond to the reverse operation. You need to stop the car and re-engage the R gear to achieve reverse gear.

5. The mining mode control method of a pure electric power system according to claim 1, characterized in that: It also includes neutral gear operation; the driver activates the N gear through the handle. At this time, the AMT does not shift gears, but only simulates and feeds back the neutral gear signal to the instrument through the communication signal; at this time, the motor torque and motor speed are reset to zero, and the whole vehicle has no power output.

6. A mining mode control method for a pure electric power system according to claim 1, characterized in that: It also includes forward operation: when the shift handle is in D gear and the accelerator is pressed, the vehicle can move forward.

7. A mining mode control method for a pure electric power system according to claim 1, characterized in that: It also includes the process of driving in mining mode, if you drive on a better road outside the mine, exit the mining mode and switch to the shifting mode for driving on ordinary roads.

8. A mining mode control method for a pure electric power system according to claim 7, characterized in that: When the vehicle stops and the speed is zero, press the E / P button twice in succession within 3 seconds. A prompt message will be displayed on the instrument. After the prompt message flashes for 5 seconds, the letter E will be displayed in the gear display area of ​​the instrument. The vehicle will resume normal driving status and respond to any operation of the shift handle to achieve gear shifting and neutral gear, and realize manual or automatic gear shifting.

9. A mining mode control method for a pure electric power system according to claim 1, characterized in that: If you need to memorize the usage data of different drivers or different mining conditions, when exiting the mining mode, press the E / P button 3 times in 3 seconds to achieve it; it mainly records the maximum forward and reverse speeds.

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