Whole tractor power-on circuit

Abstract

The utility model provides a whole tractor power-on circuit which comprises a storage battery, a starting relay, a main relay, an accessory relay, an ignition lock and an electromagnetic power supply main switch, the storage battery is connected with an OFF position of the ignition lock, and ACC and ON positions of the ignition lock are correspondingly connected with control coils of the accessory relay and the main relay. The main relay is connected with a control coil of the electromagnetic power supply main switch in parallel, the START position of the ignition lock is connected with a control coil of the starting relay, and the storage battery is connected with the accessory power supply branch, the main power supply branch and the starting control branch through a contact switch of the electromagnetic power supply main switch. Contact switches of the accessory relay, the main relay and the starting relay are arranged in corresponding branches, so that a driver does not need to manually turn on an electromagnetic power supply main switch before starting the tractor, and the whole tractor can be powered by screwing a key; after a driver turns off the tractor, the power supply of the whole tractor can be turned off only by screwing the key to the OFF position, and the electromagnetic power supply main switch does not need to be turned off manually.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle power supply control, in particular to a power-on circuit for a complete tractor vehicle. Background Art

[0002] With the continuous development of high-horsepower tractor technology, the load of electrical equipment is also increasing. After the tractor is turned off, some electrical equipment is still working and consuming electricity. If the time is too long or even within a few days, the battery will be depleted, resulting in the inability to start the engine next time. In order to avoid the battery being depleted and unable to start the engine, users usually have to manually turn off the main battery power switch every time the tractor is turned off.

[0003] At present, the main power switch of the battery is mechanical. Every time the main power switch is turned off, the driver has to get off the vehicle and turn it off. Since the main power switch is often inside the front end of the hood or on the lower right side of the cab, the driver has to go around to turn it off, which is time-consuming, labor-intensive and troublesome. The driver often forgets to turn it off, resulting in battery power loss.

[0004] And every time before getting in the car and starting the tractor, you have to manually turn on the main power switch, which is time-consuming, labor-intensive and troublesome, and then enter the cab and insert the key to start the tractor.

[0005] Therefore, the existing power-on method has the following problems: the driver needs to manually turn off the main power switch every time after turning off the tractor. If the driver forgets to turn off the main power switch, the battery will be discharged, causing the entire vehicle to be unable to start; and the driver needs to manually turn on the main power switch every time before starting the tractor. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a power-on circuit for a tractor.

[0007] A tractor vehicle power-on circuit includes: a battery, a starter relay, a main relay, an accessory relay, an ignition lock and an electromagnetic power main switch;

[0008] The first power supply terminal of the battery is connected to the OFF position of the ignition lock and one end of the contact switch of the electromagnetic power main switch. The ACC position of the ignition lock is connected to the second power supply terminal of the battery through the control coil of the accessory relay. The ON position of the ignition lock is connected to the second power supply terminal of the battery through the control coil of the main relay. The control coil of the main relay is connected in parallel with the control coil of the electromagnetic power main switch. The START position of the ignition lock is connected to the second power supply terminal of the battery through the control coil of the starter relay.

[0009] The other end of the contact switch of the electromagnetic power main switch is connected to one end of the accessory power supply branch, one end of the main power supply branch and one end of the starting control branch. The other end of the accessory power supply branch, the other end of the main power supply branch and the other end of the starting control branch are connected to the second power supply end of the battery. The contact switch of the accessory relay is arranged on the accessory power supply branch, the contact switch of the main relay is arranged on the main power supply branch, and the contact switch of the starting relay is arranged on the starting control branch.

[0010] Furthermore, the first power supply end of the battery is the positive electrode of the battery, and the second power supply end of the battery is the negative electrode of the battery.

[0011] Furthermore, the contact switch of the electromagnetic power main switch, the contact switch of the accessory relay, the contact switch of the main relay and the contact switch of the starter relay are all normally open contact switches.

[0012] Furthermore, a freewheeling diode is connected in reverse parallel to the control coil of the electromagnetic power main switch.

[0013] Furthermore, the first power supply terminal of the battery is connected to the OFF position of the ignition lock through a fuse.

[0014] The utility model has the following beneficial effects: when the driver starts the tractor, the ignition lock is turned to the ACC position and the ON position in sequence, and the control coil of the accessory relay, the control coil of the main relay and the control coil of the electromagnetic power main switch are energized. When the contact switch of the electromagnetic power main switch is turned on, the contact switches of the accessory relay and the main relay are turned on, and the accessory electrical equipment and the main electrical equipment are energized and work; when the ignition lock is turned to the START position, the control coil of the starter relay is energized. When the contact switch of the electromagnetic power main switch is turned on, the contact switch of the starter relay is turned on, the starter is energized and runs, and the tractor starts; when the ignition lock is returned to the OFF position, the control coil of the electromagnetic power main switch loses power, and the contact switch of the electromagnetic power main switch is disconnected, then all electrical equipment will lose power and stop running. The utility model provides a tractor power-on circuit that can achieve the following: 1. Before starting the tractor each time, the driver does not need to manually turn on the electromagnetic power main switch, but can directly enter the cab, insert the key, and turn the key to power the entire vehicle; 2. After shutting down the tractor each time, the driver does not need to manually turn off the electromagnetic power main switch, but can shut down the power of the tractor by simply turning the key to the OFF position and pulling out the key. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a circuit diagram of a vehicle power-on circuit provided by the utility model;

[0016] Figure 1Among them, 1 is the battery; 2 is the main electromagnetic power switch; 3 is the starting relay; 4 is the fuse; 5 is the ignition lock; 6 is the main relay; 7 is the accessory relay; 8 is the accessory electrical equipment; 9 is the main electrical equipment; 10 is the starter. DETAILED DESCRIPTION

[0017] like Figure 1 As shown, this embodiment provides a tractor power-on circuit, comprising: a battery 1, an electromagnetic power main switch 2, a starter relay 3, an ignition lock 5, a main relay 6, and an accessory relay 7. The starter relay 3, main relay 6, accessory relay 7, and electromagnetic power main switch 2 are all relay switches, each including a control coil and a contact switch. In this embodiment, the contact switches of the starter relay 3, main relay 6, accessory relay 7, and electromagnetic power main switch 2 are all normally open. When the control coil is energized, the contact switches are closed; when the control coil is de-energized, the contact switches are open.

[0018] The battery 1 includes a first power supply end and a second power supply end. In this embodiment, the first power supply end of the battery 1 is the positive electrode of the battery 1 , and the second power supply end of the battery 1 is the negative electrode of the battery 1 .

[0019] The positive pole of the battery 1 is connected to the OFF position of the ignition lock 5 and one end of the contact switch of the electromagnetic power supply main switch 2. The ACC position of the ignition lock 5 is connected to the negative pole of the battery 1 through the control coil of the accessory relay 7. The ON position of the ignition lock 5 is connected to the negative pole of the battery 1 through the control coil of the main relay 6. The control coil of the main relay 6 is connected in parallel with the control coil of the electromagnetic power supply main switch 2. The START position of the ignition lock 5 is connected to the negative pole of the battery 1 through the control coil of the starter relay 3.

[0020] The other end of the contact switch of the electromagnetic power main switch 2 is connected to one end of the accessory power supply branch, one end of the main power supply branch, and one end of the starting control branch. The other ends of the accessory power supply branch, the other ends of the main power supply branch, and the other ends of the starting control branch are connected to the negative terminal of battery 1. The contact switch of accessory relay 7 and accessory power equipment 8 are arranged on the accessory power supply branch, the contact switch of main relay 6 and main power equipment 9 are arranged on the main power supply branch, and the contact switch of starter relay 3 and starter 10 are arranged on the starting control branch.

[0021] In this embodiment, a freewheeling diode is connected in reverse parallel to the control coil of the electromagnetic power main switch 2 .

[0022] In this embodiment, the positive electrode of the battery 1 is connected to the OFF position of the ignition lock 5 through the fuse 4.

[0023] When starting the tractor, the driver uses the key to turn the ignition lock 5 to the ACC and ON positions, sequentially. This energizes the control coils of the accessory relay 7, the main relay 6, and the electromagnetic power switch 2, and the contact switch of the electromagnetic power switch 2 turns on. When the contact switch of the electromagnetic power switch 2 turns on, and the contact switches of the accessory relay 7 and main relay 6 also turn on, the accessory power devices 8 and the main power devices 9 are powered and operate. Turning the ignition lock 5 to the START position energizes the control coil of the starter relay 3. When the contact switch of the electromagnetic power switch 2 turns on, the contact switch of the starter relay 3 also turns on, energizing the starter 10 and starting the tractor. This allows the ignition lock 5 to control the charging of the battery 1 and start the engine.

[0024] When the driver needs to turn off the tractor, he returns the ignition lock 5 to the OFF position. Then, the control coil of the electromagnetic power main switch 2 loses power and the contact switch of the electromagnetic power main switch 2 is disconnected. Then, all electrical equipment will lose power and stop running. Then, the driver pulls out the key, thereby realizing the function of disconnecting the power supply of the entire vehicle by using the ignition lock 5.

[0025] The utility model provides a tractor power-on circuit that can achieve the following: 1. Before starting the tractor each time, the driver does not need to manually turn on the electromagnetic power main switch, but can directly enter the cab, insert the key, and turn the key to power the entire vehicle; 2. After shutting down the tractor each time, the driver does not need to manually turn off the electromagnetic power main switch, but can shut down the power of the tractor by simply turning the key to the OFF position and pulling out the key.

Claims

1. A tractor vehicle power-on circuit, characterized in that: include: Battery, starter relay, main relay, accessory relay, ignition lock and solenoid power master switch; The first power supply terminal of the battery is connected to the OFF position of the ignition lock and one end of the contact switch of the electromagnetic power main switch. The ACC position of the ignition lock is connected to the second power supply terminal of the battery through the control coil of the accessory relay. The ON position of the ignition lock is connected to the second power supply terminal of the battery through the control coil of the main relay. The control coil of the main relay is connected in parallel with the control coil of the electromagnetic power main switch. The START position of the ignition lock is connected to the second power supply terminal of the battery through the control coil of the starter relay. The other end of the contact switch of the electromagnetic power main switch is connected to one end of the accessory power supply branch, one end of the main power supply branch and one end of the starting control branch. The other end of the accessory power supply branch, the other end of the main power supply branch and the other end of the starting control branch are connected to the second power supply end of the battery. The contact switch of the accessory relay is arranged on the accessory power supply branch, the contact switch of the main relay is arranged on the main power supply branch, and the contact switch of the starting relay is arranged on the starting control branch.

2. The tractor vehicle power-on circuit according to claim 1, characterized in that: The first power supply end of the battery is the positive electrode of the battery, and the second power supply end of the battery is the negative electrode of the battery.

3. The tractor vehicle power-on circuit according to claim 1, characterized in that: The contact switch of the electromagnetic power main switch, the contact switch of the accessory relay, the contact switch of the main relay and the contact switch of the starter relay are all normally open contact switches.

4. The tractor power-on circuit according to claim 1, characterized in that: The control coil of the electromagnetic power main switch is connected in reverse parallel with a freewheeling diode.

5. The tractor vehicle power-on circuit according to claim 1, characterized in that: The first power supply terminal of the battery is connected to the OFF position of the ignition lock through a fuse.

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