Energy saving mode control method and system for a skid steer loader

Abstract

The application discloses a kind of energy-saving mode control methods of skid loader, belong to skid loader control technical field, solve the technical problem that skid loader energy consumption is big, method includes: obtaining energy-saving mode state, foot pedal state, parking pressure state;If energy-saving mode state is enabled and foot pedal state is disconnected and parking pressure reaches set pressure and duration reaches first set time, then control main pump motor stops working, so that main pump motor is in standby state;If energy-saving mode state is disabled or foot pedal state is connected or parking pressure is less than set pressure duration reaches second set time, then control main pump motor immediately resumes work.The application also discloses a kind of energy-saving mode control system of skid loader.The application can realize mode automatic control after energy-saving mode is opened, the endurance of whole vehicle can be improved by 15% in the state of energy-saving mode, and the control of driver is not affected.

Description

Technical Field

[0001] The present invention relates to the technical field of skid loader section control, and more particularly, to a skid loader energy-saving mode control method and system. Background Art

[0002] Electric skid-steer loaders rely on wheel-drive motors for propulsion, while the loading mechanism operates via the main pump motor, which drives the hydraulic pump. When the skid-steer loader's loading mechanism is not in operation, the main pump motor is not actually needed. Allowing the main pump motor to idle without a load consumes significant energy. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art. One purpose of the present invention is to provide an energy-saving mode control method for a skid loader that can reduce energy consumption.

[0004] A second object of the present invention is to provide an energy-saving mode control system for a skid steer loader that can reduce energy consumption.

[0005] In order to achieve the above-mentioned first objective, the present invention provides a skid steer loader energy-saving mode control method, comprising:

[0006] Get the energy-saving mode status, pedal status, and parking pressure status;

[0007] If the energy-saving mode is enabled and the pedal is disconnected and the parking pressure reaches the set pressure and the duration reaches the first set time, the main pump motor is controlled to stop working and put the main pump motor into a standby state;

[0008] If the energy-saving mode state is disabled or the pedal state is connected or the parking pressure is less than the set pressure for a duration reaching a second set time, the main pump motor is controlled to resume operation immediately.

[0009] As a further improvement, gear information is obtained and the speed of the main pump motor is controlled according to the gear information.

[0010] Furthermore, the working mode of the main pump motor is obtained, and the direction or speed of the main pump motor is controlled according to the working mode of the main pump motor.

[0011] Furthermore, the pedaling state includes a left pedaling state and a right pedaling state.

[0012] A skid loader energy-saving mode control system includes a left foot pedal sensor switch, a right foot pedal sensor switch, a vehicle controller, a motor controller, and a main pump motor, and is characterized in that it also includes an energy-saving mode switch and a parking pressure switch;

[0013] The parking pressure switch is mounted on the parking valve body;

[0014] The vehicle controller is electrically connected to the left foot pedal sensor switch, the right foot pedal sensor switch, the energy-saving mode switch, and the parking pressure switch. The vehicle controller is connected to the motor controller via a CAN communication line, and the motor controller is electrically connected to the main pump motor.

[0015] The vehicle controller obtains the energy-saving mode status through the energy-saving mode switch, obtains the pedal status through the left pedal sensing switch and the right pedal sensing switch, obtains the parking pressure status through the parking pressure switch, and controls the operation of the main pump motor according to the above-mentioned energy-saving mode control method of a skid loader.

[0016] As a further improvement, a speed control knob is further included, and the vehicle controller is electrically connected to the speed control knob.

[0017] Beneficial effects

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] After the energy-saving mode is turned on, the present invention can realize automatic mode control, and automatically stop the main pump motor when the loading device is not needed, so as to achieve automatic control of the energy-saving mode of the whole vehicle. In the energy-saving mode, the cruising range of the whole vehicle can be improved by 15% without affecting the driver's control. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the topology of the system in the present invention;

[0021] Figure 2 is an electrical schematic diagram of the system in the present invention;

[0022] Figure 3 Schematic diagram of the energy-saving control module of the present invention;

[0023] Figure 4 This is a schematic diagram of the information reading module and the control information sending module in the present invention.

[0024] Figure 5 Flowchart of the method of the present invention.

[0025] Among them: SA01-left foot pedal sensor switch, SA02-right foot pedal sensor switch, VCU-vehicle controller, MCU-motor controller, M01-main pump motor, SB01-energy-saving mode switch, SA03-parking pressure switch, VR-speed control knob. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0027] See Figures 1 to 5, a skid loader energy-saving mode control method, comprising:

[0028] Get the energy-saving mode status, pedal status, and parking pressure status;

[0029] If the energy-saving mode is enabled and the pedal is disconnected and the parking pressure reaches the set pressure and the duration reaches the first set time, the main pump motor is controlled to stop working and put into standby state; the first set time is 2 to 3 seconds;

[0030] If the energy-saving mode is disabled or the pedal is on or the parking pressure is less than the set pressure for a second set time, the main pump motor is controlled to resume operation immediately. The second set time is 5 to 6 seconds.

[0031] The method further includes obtaining gear information and controlling the speed of the main pump motor according to the gear information. For example, the gears are divided into 1 to 10 gears, and each gear corresponds to a speed of the main pump motor.

[0032] The method further obtains the working mode of the main pump motor and controls the direction or speed of the main pump motor according to the working mode of the main pump motor.

[0033] The pedal state includes a left pedal state and a right pedal state. When the left pedal state and the right pedal state are both disconnected, the pedal state is disconnected; otherwise, the pedal state is connected.

[0034] A skid loader energy-saving mode control system includes a left foot pedal sensor switch SA01, a right foot pedal sensor switch SA02, a vehicle controller VCU, a motor controller MCU, a main pump motor M01, an energy-saving mode switch SB01, and a parking pressure switch SA03;

[0035] The parking pressure switch SA03 is installed on the parking valve body;

[0036] The vehicle controller VCU is electrically connected to the left foot pedal sensor switch SA01, the right foot pedal sensor switch SA02, the energy-saving mode switch SB01, and the parking pressure switch SA03. The vehicle controller VCU is connected to the motor controller MCU via a CAN communication line, and the motor controller MCU is electrically connected to the main pump motor M01.

[0037] The vehicle controller VCU obtains the energy-saving mode status through the energy-saving mode switch SB01, obtains the pedal status through the left pedal sensing switch SA01 and the right pedal sensing switch SA02, and obtains the parking pressure status through the parking pressure switch SA03, and controls the operation of the main pump motor M01 according to the above-mentioned energy-saving mode control method of a skid loader.

[0038] The system further includes a speed control knob VR, and the vehicle controller VCU is electrically connected to the speed control knob VR.

[0039] The vehicle controller VCU is equipped with an energy-saving control module, which consists of an information reading module and a control information sending module.

[0040] 1) The information reading module is mainly used to obtain the following information:

[0041] a. Main pump motor working information: read the pump motor speed information.

[0042] b. Energy-saving switch information: By reading the on / off status of the energy-saving switch, it can be determined whether the driver uses the energy-saving function. When the energy-saving switch is turned on, the energy-saving control mode is enabled, that is, the energy-saving mode status is enabled; otherwise, the energy-saving mode status is disabled.

[0043] c. Foot pedal information: The driver controls the loader's loading mechanism by pressing the left and right foot pedals. Pressing the left foot pedal turns on the left foot pedal switch SA01, while pressing the right foot pedal turns on the right foot pedal switch SA02. By reading the on / off status of the left and right foot pedal switches, the driver can determine whether the loader is in operation.

[0044] d. Parking pressure switch information: When the parking valve body pressure exceeds 1.8 MPa, the parking pressure switch SA03 is connected. By reading the on / off status of the parking pressure switch SA03, it can be determined whether the parking pressure is sufficient. If it is insufficient, the main pump motor needs to operate to pressurize the parking valve. When the parking valve pressure is sufficient, the road wheel brake pads are released.

[0045] e. Speed ​​control knob information: Read the VR gear status of the speed control knob, which is divided into gears 1 to 10. Each gear corresponds to the speed of the pump motor.

[0046] 2) The control information sending module is mainly used to send the following information:

[0047] a. Set the main pump motor working mode. The working mode is obtained by the above control method and is used to adjust the direction or speed of the main pump motor.

[0048] The process of implementing the above control method in this system is described as follows:

[0049] When the energy-saving mode switch SB01 is turned on, the left and right foot pedal sensors SA01 and SA02 are off, and the parking pressure switch is on, and these conditions persist for more than two seconds, the vehicle control unit (VCU) sends a stop command to the motor controller (MCU), which in turn sends a stop command to the main pump motor M01, causing it to stop and enter standby mode. If SB01 is turned off, SA01 and SA02 are connected, and the parking pressure switch is off for more than five seconds, the VCU immediately sends a VR gear speed command to the MCU, causing M01 to immediately resume the gear speed. Ultimately, when the working device is no longer required, the pump motor automatically stops, achieving automatic control of the vehicle's energy-saving mode.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A skid loader energy-saving mode control method, characterized in that: include: Obtaining the energy-saving mode status, pedal status, and parking pressure status; the pedal status refers to the state in which the driver is operating the loading device; If the energy-saving mode is enabled and the pedal is disconnected and the parking pressure reaches the set pressure and the duration reaches the first set time, the main pump motor is controlled to stop working and put the main pump motor into a standby state; If the energy-saving mode is disabled or the pedal state is on, or the parking pressure is less than the set pressure for a duration of a second set time, the main pump motor is controlled to resume operation immediately; The pedaling state includes a left pedaling state and a right pedaling state; The system for implementing the energy-saving mode control method of the skid loader includes a left foot pedal sensor switch (SA01), a right foot pedal sensor switch (SA02), a vehicle controller (VCU), a motor controller (MCU), and a main pump motor (M01), and is characterized in that it also includes an energy-saving mode switch (SB01) and a parking pressure switch (SA03); The parking pressure switch (SA03) is installed on the parking valve body; The vehicle controller (VCU) is electrically connected to the left foot pedal sensor switch (SA01), the right foot pedal sensor switch (SA02), the energy-saving mode switch (SB01), and the parking pressure switch (SA03); the vehicle controller (VCU) is connected to the motor controller (MCU) via a CAN communication line; and the motor controller (MCU) is electrically connected to the main pump motor (M01); The vehicle controller (VCU) obtains the energy-saving mode state through the energy-saving mode switch (SB01), obtains the pedal state through the left pedal sensing switch (SA01) and the right pedal sensing switch (SA02), obtains the parking pressure state through the parking pressure switch (SA03), and controls the operation of the main pump motor (M01) according to the energy-saving mode control method of the skid loader; By reading the on / off status of the energy-saving mode switch (SB01), it can be determined whether the driver uses the energy-saving function; when the energy-saving mode switch (SB01) is turned on, the energy-saving mode state is enabled; otherwise, the energy-saving mode state is disabled.

2. The energy-saving mode control method for a skid steer loader according to claim 1, characterized in that: Gear position information is acquired, and the speed of the main pump motor is controlled according to the gear position information.

3. The energy-saving mode control method for a skid steer loader according to claim 1, characterized in that: The working mode of the main pump motor is acquired, and the direction or speed of the main pump motor is controlled according to the working mode of the main pump motor.

4. The energy-saving mode control method for a skid steer loader according to claim 1, characterized in that: It also includes a speed control knob (VR), and the vehicle controller (VCU) is electrically connected to the speed control knob (VR).

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