System and method for controlling cab roll-over of new energy heavy truck

Abstract

The application discloses a system for controlling cab turnover of a new energy heavy truck, which comprises a vehicle body domain control module, a vehicle starting unit, a 24V storage battery unit, a power taking unit and a cab turnover unit; the vehicle starting unit, the 24V storage battery unit, the power taking unit and the cab turnover unit are connected with the vehicle body domain control module; the vehicle starting unit is connected with the 24V storage battery unit; the cab turnover unit is connected with the 24V storage battery unit through the power taking unit; the application has the beneficial technical effects that the system and method for controlling cab turnover of a new energy heavy truck are provided, the scheme can prevent the cab from performing turnover action in the state that a high-voltage power supply loop is activated, can avoid electric shock of personnel, and can effectively improve the safety of the new energy heavy truck.

Description

Technical Field

[0001] This invention relates to a control technology for new energy heavy-duty trucks, and more particularly to a system and method for controlling the tilting of the cab of a new energy heavy-duty truck. Background Technology

[0002] Similar to fuel-powered heavy-duty trucks, the cabs of new energy heavy-duty trucks can also be tilted. After the cab is tilted, maintenance personnel can enter the area below the cab to carry out maintenance work. Current technology uses the same control strategy as fuel-powered heavy-duty trucks when controlling the tilting of the cab, that is, the personnel directly operate the cab to tilt. The problem is that the high voltage DC power of new energy vehicles is basically above 400V. If the entire vehicle is under high voltage and the cab is tilted and maintenance work is carried out directly, there is a great safety hazard to the maintenance personnel. In order to effectively protect the lives of maintenance personnel, the technical solution should avoid tilting the cab with high voltage. Summary of the Invention

[0003] To address the problems in the background technology, this invention proposes a system for controlling the tilting of the cab of a new energy heavy truck. Its innovation lies in the fact that the system includes a vehicle body domain control module, a vehicle starting unit, a 24V battery unit, a power supply unit, and a cab tilting unit.

[0004] The vehicle starting unit, 24V battery unit, power supply unit, and cab tilting unit are all connected to the vehicle body control module; the vehicle starting unit is connected to the 24V battery unit; the cab tilting unit is connected to the 24V battery unit through the power supply unit.

[0005] The vehicle starting unit can control the state of the vehicle's low-voltage power supply circuit and high-voltage power supply circuit: the vehicle starting unit has two positions, OFF and On. When the vehicle starting unit is in the OFF position, the vehicle's low-voltage power supply circuit and high-voltage power supply circuit are inactive; when the vehicle starting unit is in the On position, the vehicle's low-voltage power supply circuit and high-voltage power supply circuit are active.

[0006] The 24V battery unit is the power source for the vehicle's low-voltage power supply circuit. The vehicle body control module, vehicle starting unit, and power supply unit draw power directly from the 24V battery unit; the cab tilting unit is powered by the power supply unit.

[0007] The power supply unit has two states: initial state and power supply state. In the initial state, the power supply line between the power supply unit and the cab tilting unit is disconnected. In the power supply state, the power supply line between the power supply unit and the cab tilting unit is connected.

[0008] The cab tilting unit is used to control the tilting action of the cab; the cab tilting unit has two states: closed state and open state; in the closed state, the cab tilting unit does not respond to the tilting command issued by the driver; in the open state, the cab tilting unit can control the cab to tilt according to the driver's command.

[0009] The vehicle body domain control module is used to control the vehicle start-up unit, power supply unit, and cab tilting unit.

[0010] Preferably, the vehicle body domain control module is also connected to an instrument display unit.

[0011] Based on the aforementioned system, this invention also proposes a method for controlling the tilting of the cab of a new energy heavy-duty truck. The hardware involved is as described above, and the specific method includes:

[0012] The power supply unit is normally in its initial state; the cab tilting unit is normally in its off state.

[0013] After the vehicle start unit switches from the On position to the OFF position, the vehicle body domain control module operates as follows:

[0014] 1) The vehicle body domain control module sets the power supply unit to the power supply state and simultaneously sets the cab tilting unit to the open state, proceeding to step 2).

[0015] 2) The vehicle body control module continuously monitors the position of the cab and the gear position of the vehicle starting unit:

[0016] If no change in the cab position is detected within the set time, the vehicle body domain control module will set the power supply unit to the initial state and simultaneously set the cab tilting unit to the off state, ending the program (after the program ends, the driver needs to manually switch the vehicle start unit from OFF to On and then back to OFF before the program will be reactivated).

[0017] If the vehicle start unit is detected to be in the ON position within the set time, the body domain control module will set the power supply unit to the initial state and simultaneously set the cab tilting unit to the off state, and the program will end.

[0018] If a change in the cab position is detected within the set time, proceed to step 3).

[0019] 3) The vehicle body control module prevents the vehicle starter unit from performing gear shifting operations, and simultaneously monitors the position of the cab and the voltage of the 24V battery unit.

[0020] Once the cab reset is detected, return to step 2);

[0021] When the voltage of the 24V battery cell is detected to be lower than the rated value, proceed to step 4).

[0022] 4) If the cab reset is detected before the set time is reached, the vehicle body domain control module will set the power supply unit to the initial state and set the cab tilting unit to the off state, and the program will end.

[0023] After the set time is reached, the vehicle body domain control module sets the power supply unit to the initial state and simultaneously sets the cab tilting unit to the off state, and the program ends.

[0024] By adopting the aforementioned solution, the cab can be prevented from being flipped up while the high-voltage power supply circuit is in an active state, thereby avoiding electric shock accidents that may be caused by live operation and ensuring personnel safety. In addition, to further improve safety, after the cab begins to flip, this solution can also prevent the high-voltage power supply circuit from being activated due to misoperation (i.e., the gear shifting prohibition operation in step 3). Furthermore, in actual situations, there may be a situation where the voltage value of the 24V battery unit is insufficient. To further improve safety, the aforementioned solution can also detect the voltage value of the 24V battery unit and automatically shut down the power supply unit and the cab flipping unit after a set time is reached, so as to prevent the cab flipping unit from malfunctioning due to sudden power depletion.

[0025] Preferably, the vehicle body domain control module is also connected to an instrument display unit. In step 3), when the voltage value of the 24V battery unit is detected to be lower than the rated value, the vehicle body domain control module controls the instrument display unit to issue an audible and visual alarm.

[0026] The beneficial technical effects of this invention are: it proposes a system and method for controlling the tilting of the cab of a new energy heavy truck. This solution can prevent the cab from tilting when the high-voltage power supply circuit is activated, avoid electric shock to personnel, and effectively improve the safety of new energy heavy trucks. Attached Figure Description

[0027] Figure 1 1. Electrical schematic diagram of the present invention;

[0028] The names corresponding to the various markings in the diagram are as follows: Body Domain Control Module 1, Vehicle Start-up Unit 2, 24V Battery Unit 3, Power Supply Unit 4, Cab Tilting Unit 5. Detailed Implementation

[0029] An innovative system for controlling the tilting of the cab of a new energy heavy truck is as follows: the system includes a vehicle body domain control module 1, a vehicle starting unit 2, a 24V battery unit 3, a power supply unit 4, and a cab tilting unit 5;

[0030] The vehicle starting unit 2, the 24V battery unit 3, the power supply unit 4, and the cab tilting unit 5 are all connected to the vehicle body control module 1; the vehicle starting unit 2 is connected to the 24V battery unit 3; the cab tilting unit 5 is connected to the 24V battery unit 3 through the power supply unit 4.

[0031] The vehicle starting unit 2 can control the state of the vehicle's low-voltage power supply circuit and high-voltage power supply circuit: the vehicle starting unit 2 has two positions, OFF and On. When the vehicle starting unit 2 is in the OFF position, the vehicle's low-voltage power supply circuit and high-voltage power supply circuit are inactive; when the vehicle starting unit 2 is in the On position, the vehicle's low-voltage power supply circuit and high-voltage power supply circuit are active.

[0032] The 24V battery unit 3 is the power source for the vehicle's low-voltage power supply circuit. The vehicle body control module 1, vehicle starting unit 2, and power supply unit 4 draw power directly from the 24V battery unit 3. The cab tilting unit 5 is powered by the power supply unit 4.

[0033] The power supply unit 4 has two states: initial state and power supply state. In the initial state, the power supply line between the power supply unit 4 and the cab tilting unit 5 is disconnected. In the power supply state, the power supply line between the power supply unit 4 and the cab tilting unit 5 is connected.

[0034] The cab tilting unit 5 is used to control the tilting action of the cab; the cab tilting unit 5 has two states: closed state and open state; in the closed state, the cab tilting unit 5 does not respond to the tilting command issued by the driver; in the open state, the cab tilting unit 5 can control the cab to tilt according to the driver's command.

[0035] The vehicle body domain control module 1 is used to control the vehicle start-up unit 2, the power supply unit 4, and the cab tilting unit 5.

[0036] Furthermore, the vehicle body domain control module 1 is also connected to an instrument display unit.

[0037] An innovative method for controlling the tilting of the cab of a new energy heavy truck is as follows: the hardware involved includes a vehicle body domain control module 1, a vehicle starting unit 2, a 24V battery unit 3, a power supply unit 4, and a cab tilting unit 5.

[0038] The vehicle starting unit 2, the 24V battery unit 3, the power supply unit 4, and the cab tilting unit 5 are all connected to the vehicle body control module 1; the vehicle starting unit 2 is connected to the 24V battery unit 3; the cab tilting unit 5 is connected to the 24V battery unit 3 through the power supply unit 4.

[0039] The vehicle starting unit 2 is used to control the state of the vehicle's low-voltage power supply circuit and high-voltage power supply circuit: the vehicle starting unit 2 has at least two positions, OFF and On. When the vehicle starting unit 2 is in the OFF position, the vehicle's low-voltage power supply circuit and high-voltage power supply circuit are inactive; when the vehicle starting unit 2 is in the On position, the vehicle's low-voltage power supply circuit and high-voltage power supply circuit are active.

[0040] The 24V battery unit 3 is the power source for the vehicle's low-voltage power supply circuit. The vehicle body control module 1, vehicle starting unit 2, and power supply unit 4 draw power directly from the 24V battery unit 3. The cab tilting unit 5 is powered by the power supply unit 4.

[0041] The power supply unit 4 has two states: initial state and power supply state. In the initial state, the power supply line between the power supply unit 4 and the cab tilting unit 5 is disconnected. In the power supply state, the power supply line between the power supply unit 4 and the cab tilting unit 5 is connected.

[0042] The cab tilting unit 5 is used to control the tilting action of the cab; the cab tilting unit 5 has two states: closed state and open state; in the closed state, the cab tilting unit 5 does not respond to the tilting command issued by the driver; in the open state, the cab tilting unit 5 can control the cab to tilt according to the driver's command.

[0043] The vehicle body domain control module 1 is used to control the vehicle start-up unit 2, the power supply unit 4, and the cab tilting unit 5.

[0044] The method includes:

[0045] The power supply unit 4 is normally in the initial state; the cab tilting unit 5 is normally in the off state.

[0046] After the vehicle start unit 2 switches from the On position to the OFF position, the vehicle body domain control module 1 operates according to the following steps:

[0047] 1) The vehicle body domain control module 1 sets the power supply unit 4 to the power supply state, and at the same time sets the cab tilting unit 5 to the open state, proceeding to step 2).

[0048] 2) The vehicle body control module 1 continuously monitors the position of the cab and the gear position of the vehicle starting unit 2:

[0049] If no change in the cab position is detected within the set time, the vehicle body domain control module 1 will set the power supply unit 4 to the initial state and simultaneously set the cab tilting unit 5 to the off state, and the program will end.

[0050] If the vehicle start unit 2 is detected to be in the On position within the set time, the vehicle body domain control module 1 will set the power supply unit 4 to the initial state and simultaneously set the cab tilting unit 5 to the off state, and the program will end.

[0051] If a change in the cab position is detected within the set time, proceed to step 3).

[0052] 3) The vehicle body control module 1 prevents the vehicle start unit 2 from performing gear shifting operations, and at the same time, continuously monitors the position of the cab and the voltage value of the 24V battery unit 3:

[0053] Once the cab reset is detected, return to step 2);

[0054] When the voltage of 24V battery cell 3 is detected to be lower than the rated value, proceed to step 4).

[0055] 4) If the cab reset is detected before the set time is reached, the vehicle body domain control module 1 will set the power supply unit 4 to the initial state and set the cab tilting unit 5 to the off state, and the program will end.

[0056] After the set time is reached, the vehicle body domain control module 1 sets the power supply unit 4 to the initial state and sets the cab tilting unit 5 to the off state, and the program ends.

[0057] Furthermore, the vehicle body domain control module 1 is also connected to an instrument display unit. In step 3), when the voltage value of the 24V battery unit 3 is detected to be lower than the rated value, the vehicle body domain control module 1 controls the instrument display unit to issue an audible and visual alarm.

Claims

1. A method for controlling the tilting of the cab of a new energy heavy-duty truck, characterized in that: The hardware involved includes a vehicle body domain control module (1), a vehicle start unit (2), a 24V battery unit (3), a power supply unit (4), and a cab tilting unit (5). The vehicle starting unit (2), 24V battery unit (3), power supply unit (4) and cab tilting unit (5) are all connected to the vehicle body domain control module (1); the vehicle starting unit (2) is connected to the 24V battery unit (3); the cab tilting unit (5) is connected to the 24V battery unit (3) through the power supply unit (4); The vehicle starting unit (2) is used to control the state of the vehicle's low-voltage power supply circuit and high-voltage power supply circuit: the vehicle starting unit (2) has at least two positions, OFF and On. When the vehicle starting unit (2) is in the OFF position, the vehicle's low-voltage power supply circuit and high-voltage power supply circuit are inactive. When the vehicle starting unit (2) is in the On position, the vehicle's low-voltage power supply circuit and high-voltage power supply circuit are active. The 24V battery unit (3) is the power source for the vehicle's low-voltage power supply circuit. The vehicle body control module (1), vehicle starting unit (2), and power take-off unit (4) are directly powered from the 24V battery unit (3). The cab tilting unit (5) is powered by the power take-off unit (4). The power supply unit (4) has two states: initial state and power supply state. In the initial state, the power supply line between the power supply unit (4) and the cab tilting unit (5) is disconnected. In the power supply state, the power supply line between the power supply unit (4) and the cab tilting unit (5) is connected. The cab tilting unit (5) is used to control the tilting action of the cab; the cab tilting unit (5) has two states: closed state and open state; in the closed state, the cab tilting unit (5) does not respond to the tilting command issued by the driver; in the open state, the cab tilting unit (5) can control the cab to tilt according to the driver's command. The vehicle body domain control module (1) is used to control the vehicle start-up unit (2), the power supply unit (4), and the cab tilting unit (5). The method includes: The power supply unit (4) is normally in the initial state; the cab tilting unit (5) is normally in the off state. After the vehicle starting unit (2) switches from the On position to the OFF position, the vehicle body domain control module (1) operates according to the following steps: 1) The vehicle body domain control module (1) sets the power supply unit (4) to the power supply state, and at the same time sets the cab tilting unit (5) to the open state, and proceeds to step 2). 2) The vehicle body domain control module (1) continuously monitors the position of the cab and the gear position of the vehicle starting unit (2): If no change in the cab position is detected within the set time, the vehicle body domain control module (1) sets the state of the power supply unit (4) to the initial state, and at the same time sets the cab tilting unit (5) to the off state, and the program ends. If the gear position of the vehicle starting unit (2) is detected to be on within the set time, the body domain control module (1) sets the state of the power supply unit (4) to the initial state, and at the same time sets the cab tilting unit (5) to the off state, and the program ends. If a change in the cab position is detected within the set time, proceed to step 3). 3) The vehicle body control module (1) prohibits the vehicle starting unit (2) from performing gear shifting operations, and at the same time, continuously monitors the position of the cab and the voltage value of the 24V battery unit (3): Once the cab reset is detected, return to step 2); When the voltage of the 24V battery cell (3) is detected to be lower than the rated value, proceed to step 4). 4) If the cab reset is detected before the set time is reached, the vehicle body domain control module (1) sets the state of the power supply unit (4) to the initial state, and at the same time sets the cab tilting unit (5) to the off state, and the program ends. After the set time is reached, the vehicle body domain control module (1) sets the power supply unit (4) to the initial state and sets the cab tilting unit (5) to the off state, and the program ends.

2. The method for controlling the tilting of the cab of a new energy heavy-duty truck according to claim 1, characterized in that: The vehicle body domain control module (1) is also connected to an instrument display unit. In step 3), when the voltage value of the 24V battery unit (3) is detected to be lower than the rated value, the vehicle body domain control module (1) controls the instrument display unit to issue an audible and visual alarm.

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