Electrical control system of electric mower

Abstract

The utility model discloses an electric control system of an electric mower, which comprises a walking controller, a left motor and a right motor, the walking control motor is used for controlling the left motor and the right motor to work, the output end of the left motor and the output end of the right motor are respectively connected with a left wheel and a right wheel, and when the left motor stops working and the right motor rotates forwards or reversely, the left wheel and the right wheel rotate forwards or reversely. When the right motor stops working, the left motor rotates forwards or reversely, the vehicle rotates rightwards, and when the left motor and the right motor rotate forwards and reversely at the same rotating speed at the same time, the vehicle runs forwards or reversely.

Description

Technical Field

[0001] This utility model is an electrical control system for an electric lawnmower. Background Technology

[0002] A lawnmower, also known as a lawn trimmer, lawn mower, or lawn mower, is a mechanical tool used for trimming lawns and vegetation. It consists of a cutter head, engine, wheels, a walking mechanism, blades, a handle, and a control unit. The cutter head is mounted on the wheels, and the engine is mounted on the cutter head. The blades are mounted on the engine's output shaft. The high-speed rotation of the blades, powered by the engine, significantly increases the speed of mowing, saving workers' time and reducing manpower. Lawn mowers are divided into push-type and ride-on types; ride-on mowers are more suitable for large-area work.

[0003] However, existing ride-on lawnmowers typically use traditional vehicle control systems to move the vehicle. Such control systems result in a turning radius when the lawnmower turns, which is not suitable for lawn mowing work. Because lawn mowing requires cutting grass in every part of the field, there should be no gaps between the lawnmower's movement trajectory. That is, the lawnmower needs to be able to turn without any gaps. However, traditional control systems cannot achieve this. Therefore, a control system is needed to enable the lawnmower to turn with zero radius. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an electrical control system for an electric lawnmower.

[0005] An electrical control system for an electric lawnmower includes a travel controller, a left motor, and a right motor. The travel controller controls the operation of the left and right motors. The output terminals of the left and right motors are connected to the left and right wheels, respectively. When the left motor stops working, the right motor rotates forward or in reverse, and the vehicle turns left. When the right motor stops working, the left motor rotates forward or in reverse, and the vehicle turns right. When the left and right motors rotate forward and in reverse at the same speed, the vehicle travels in the forward or reverse direction.

[0006] Preferably, the travel controller includes a left travel controller and a right travel controller. The left travel controller is connected to the left brake switch and the left throttle potentiometer, and the right travel controller is connected to the right brake switch and the right throttle potentiometer.

[0007] Preferably, it also includes a cutter controller for controlling the cutter mechanism, which includes at least three cutters and a cutter motor. The motor is used to control the operation of the cutters and is controlled by the cutter controller.

[0008] Preferably, it also includes a lithium battery, which is used to power the walking controller and the cutter controller.

[0009] Preferably, the lithium battery is connected to the walking controller and the cutter controller via a safety relay.

[0010] Preferably, the cutter motor is a sensorless motor.

[0011] Beneficial effects: Compared with the prior art, this utility model uses a continuously variable transmission driven by a motor to achieve zero-angle turning and reversing of the vehicle by reversing the motor, making grass operation more convenient and faster, reducing blind spots when turning and mowing in narrow areas, and matching a suitable gearbox ratio according to the vehicle's commonly used speed range to ensure that the drive motor always works within the rated power and rated torque range, thereby improving energy conversion efficiency.

[0012] The vehicle's travel controller sets different travel speeds according to different working conditions. Based on the grass condition (height, density, and relocation), the controller sets high and low travel speeds for mowing. Low speed is used when the grass is thick and dense to reduce cutter jamming, while high speed is used when the grass is thin and sparse to improve work efficiency.

[0013] The cutter motor uses continuously variable transmission to directly drive the cutter, reducing mechanical wear. The cutter motor adjusts its output torque according to different loads to ensure smooth cutting and improve work efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the electrical control system for an electric lawnmower.

[0015] Figure 2 This is the front view of the lawnmower;

[0016] Figure 3 This is a side view of a lawnmower;

[0017] In the diagram, 1. Cutter motor, 2. Cutter controller, 3. Left travel controller, 4. Right travel controller, 5. Lithium battery, 6. Right push rod, 7. Right throttle potentiometer, 8. Right brake switch, 9. Right wheel, 10. Right motor, 11. Left push rod, 12. Left brake switch, 13. Left throttle potentiometer, 14. Left wheel, 15. Left motor. Detailed Implementation

[0018] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0019] like Figure 1-3As shown, the components are: cutter motor 1, cutter controller 2, left travel controller 3, right travel controller 4, lithium battery 5, right push rod 6, right throttle potentiometer 7, right brake switch 8, right wheel 9, right motor 10, left push rod 11, left brake switch 12, left throttle potentiometer 13, left wheel 14, and left motor 15.

[0020] An electrical control system for an electric lawnmower includes a travel controller, a left motor 15, and a right motor 10. The controller controls the operation of the left motor 15 and the right motor 10. The output terminals of the left motor 15 and the right motor 10 are connected to the left wheel 14 and the right wheel 9, respectively. When the left motor 15 stops working, the right motor 10 rotates forward or in reverse, and the vehicle turns left. When the right motor 10 stops working, the left motor 15 rotates forward or in reverse, and the vehicle turns right. When the left motor 15 and the right motor 10 rotate forward and in reverse at the same speed, the vehicle travels in the forward or reverse direction.

[0021] In this embodiment, the travel controller includes a left travel controller 3 and a right travel controller 4. The left travel controller 3 is connected to the left brake switch 12 and the left throttle potentiometer 13, and the right travel controller 4 is connected to the right brake switch 8 and the right throttle potentiometer 7.

[0022] In this embodiment, a cutter controller is also included. The cutter controller 2 is used to control the cutter mechanism. The cutter mechanism includes at least three cutters and a cutter motor 1. The motor is used to control the operation of the cutters and is controlled by the cutter controller 2.

[0023] In this embodiment, a lithium battery 5 is also included. The lithium battery 5 is used to power the walking controller and the cutter controller 2. The power supply is not limited to the lithium battery.

[0024] In this embodiment, the lithium battery 5 is connected to the walking controller and the cutter controller 2 via a safety relay.

[0025] In this embodiment, the cutter motor 1 is a sensorless motor.

[0026] Instructions for use: During actual operation, the travel controller has a left push rod 11 and a right push rod 6 in front of the driver's seat to control the throttle potentiometer, thereby controlling the throttle of the travel controller. By pushing the rods forward or backward, the rotation direction of the motor is controlled, thereby controlling the wheels to move forward or backward.

[0027] During operation, lithium battery 5 supplies power to each controller through safety relays. The working status of the left and right wheels is controlled by left and right travel controllers, and the speed is controlled by brake switch and throttle potentiometer. When the vehicle needs to move forward or backward, the two push rods are pushed forward or backward by the same amount at the same time to make the vehicle move in a straight line.

[0028] When a vehicle needs to turn with zero turning radius, the push rod keeps one side of the wheels stationary, and the push rod moves the other side of the wheels to achieve a left or right turn.

[0029] When the cutter needs to work, the cutter start switch is turned on by the cutter controller 2. After receiving the start signal, the controller sends a cutter start command through the CAN bus. The cutter controller 2 turns on and controls the cutter motor 1 to run through the DC-AC power conversion, thereby driving the blade to rotate for grass cutting.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electrical control system for an electric lawnmower, characterized in that, The vehicle includes a travel controller, a left motor, and a right motor. The travel controller controls the operation of the left and right motors. The output terminals of the left and right motors are connected to the left and right wheels, respectively. When the left motor stops working, the right motor rotates forward or in reverse, and the vehicle turns left. When the right motor stops working, the left motor rotates forward or in reverse, and the vehicle turns right. When the left and right motors rotate forward and in reverse at the same speed, the vehicle travels in the forward or reverse direction.

2. The electrical control system for an electric lawnmower according to claim 1, characterized in that, The travel controller includes a left travel controller and a right travel controller. The left travel controller is connected to the left brake switch and the left throttle potentiometer, and the right travel controller is connected to the right brake switch and the right throttle potentiometer.

3. The electrical control system for an electric lawnmower according to claim 1, characterized in that, It also includes a cutter controller, which controls the cutter mechanism, which includes at least three cutters and a cutter motor. The motor controls the operation of the cutters and is controlled by the cutter controller.

4. The electrical control system for an electric lawnmower according to claim 3, characterized in that, It also includes a lithium battery, which powers the walking controller and the cutter controller.

5. The electrical control system for an electric lawnmower according to claim 4, characterized in that, The lithium battery is connected to the walking controller and the cutter controller via a safety relay.

6. The electrical control system for an electric lawnmower according to claim 4, characterized in that, The cutting motor is either a sensorless motor or a sensored motor.

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