CN202213508U - Mining explosion-proof lithium iron phosphate electric locomotive - Google Patents

Abstract

The utility model discloses a mining flame proof lithium iron phosphate locomotive, which comprises a vehicle rack, running gear and drive arrangement are installed to the lower part of frame, lithium iron phosphate group is installed to the frame, and the electricity is connected between lithium iron phosphate group and the drive arrangement, the utility model discloses long service life, circulated charge-discharge 2000 times, the volume of lithium iron phosphate group is littleer weight is lighter under the same capacity, but heavy current discharge, and electric locomotive power is more sufficient, and it is more convenient to use, and the reliability is high, and cost of maintenance is low.

Description

A mining explosion-proof lithium iron phosphate locomotive

technical field

The utility model relates to a mining electric locomotive, in particular to a mining explosion-proof lithium iron phosphate electric locomotive used for underground transportation in roadways and long-distance ground transportation, and belongs to the technical field of mining transportation machinery.

Background technique

At present, my country's coal mine battery electric locomotives have 2.5 tons, 5 tons, 8 tons, 12 tons, 18 tons and higher tonnage models, and the corresponding battery packs are 48V, 60V, 80V, 90V, 110V, 132V, 140V, 192V, The DC voltage level of 256V or even higher is mainly used for long-distance transportation in underground transportation lanes and on the ground. It is equivalent to the motor locomotive in railway transportation, pulling a train composed of mine cars or people-cars on the track to complete Transportation of coal, gangue, materials, equipment and personnel.

However, the currently used lead-acid battery electric locomotives have the following disadvantages: the short cycle life is only 500 times, the charging cycle is usually more than 6 hours, the discharge current is small, the electric locomotive is insufficient, the environment is polluted by metal elements, and there is a potential danger of explosion. Regular maintenance is required, it is inconvenient to use, and the price is also increasing year by year.

Utility model content

The problem to be solved by the utility model is to provide a mining explosion-proof lithium iron phosphate locomotive with sufficient power, convenient use, high reliability, low maintenance cost and high utilization rate of the battery pack.

In order to solve the above problems, the utility model adopts the following technical solutions:

A mining explosion-proof lithium iron phosphate electric locomotive, including a frame, a running device and a driving device are installed on the lower part of the frame, a lithium iron phosphate battery pack is installed on the frame, and the lithium iron phosphate battery pack and the driving device Electrical connection between.

Further, the driving device includes a traction motor installed on the vehicle frame, the traction motor is in transmission connection with the running gear, and is electrically connected with the lithium iron phosphate battery pack.

Further, the lithium iron phosphate battery pack includes several battery branches connected in parallel, each battery branch includes several batteries connected in series, each battery has a battery control board, and the battery control board integrates a voltage detection circuit, temperature A detection circuit and a performance equalization circuit.

Further, the vehicle frame is equipped with a flameproof plug and a chopper control box, and the lithium iron phosphate battery pack and the traction motor are electrically connected through the flameproof plug and the chopper control box.

Further, the chopper control box is provided with a direction control switch and a driver's operating handle.

Further, a ceiling is installed on the upper part of the vehicle frame, a human-computer interaction display is installed in the ceiling, and the human-computer interaction display is electrically connected to the lithium iron phosphate battery pack.

Further, the human-computer interaction display adopts a TFT liquid crystal display.

Further, the traveling device includes wheels installed at the lower part of the frame, and damping springs are installed between the wheels and the frame.

Further, the front and rear ends of the vehicle frame are respectively provided with buffers.

Further, the vehicle frame is provided with a braking device and a sanding device, which are used for backup in case of insufficient electrical braking force or emergency situations.

The utility model adopts the above-mentioned scheme, and its working process is as follows: the lithium iron phosphate battery pack provides a DC power supply, and then enters the traction motor through the flameproof plug and the chopper control box to drive the motor to run, and the motor drives the wheels to rotate through the walking device, thereby traction Electric locomotive running.

The beneficial effects of the utility model:

1) Compared with the wire-type electric locomotive, the utility model has no spark in operation, is safer, and can be used in an environment with a high gas concentration;

Compared with diesel electric locomotives, the utility model has no pollution, is more environmentally friendly, and has more economical use costs;

Compared with the lead-acid electric locomotive, the charging speed of the utility model is fast, and it can be fully charged in 40 minutes;

The utility model has a long service life and can be recharged and discharged 2000 times. Under the same capacity, the lithium iron phosphate battery pack is smaller in size and lighter in weight. It can be discharged with a large current, and the power of the electric locomotive is more sufficient. low cost.

2) The control of this utility model adopts the latest chopping control scheme, removes the resistance box and switching switch in the series resistance electric locomotive, and replaces it with a chopping control box. There is a direction control switch and a driver on the chopping control box. The handle, the direction control switch is used to control forward or backward driving, the driver's operating handle is used to adjust the driving speed or braking speed, according to the swing angle of the driver's operating handle, the core circuit in the chopper control box generates pulse width modulation The PWM signal acts on the controllable IGBT power module to adjust the voltage at both ends of the traction motor to realize voltage regulation start and voltage regulation speed regulation. The energy in the regulation process is no longer consumed in the resistance, which improves the energy utilization rate of the battery pack.

3) The utility model uses a high-energy-efficiency lithium iron phosphate battery pack for power supply, and the lithium iron phosphate battery pack meets the explosion-proof requirements.

4) The lithium iron phosphate battery pack is equipped with a complete battery management system. Each battery has a battery control board. The battery control board integrates voltage detection circuits, temperature detection circuits and performance equalization circuits. All battery control boards pass 4 core The CAN bus is centrally controlled by the battery management system, which can realize automatic balance of voltage and current, and automatic protection during overvoltage, undervoltage, overtemperature and overload.

5) The human-computer interaction display adopts a TFT liquid crystal display, which cyclically displays the voltage and temperature of each battery, the total voltage and average temperature of the battery pack, the charging and discharging current of each branch, and the total charging and discharging current of the battery pack, If there is a faulty battery, the number of the faulty battery will be displayed to remind you to replace it. If there is an alarm for high voltage, high temperature, or current overload, the corresponding alarm information will be displayed for easy handling. If there is a low voltage, the corresponding alarm information will be displayed. , to remind you to charge in time.

6) According to different requirements, the traction motor of the present utility model may be a DC series-excited motor, or a DC separately-excited motor, or a DC double motor, or a switched reluctance motor, and these motors are controlled by the chopper control box, In the process of downhill transportation, it can work in the electric braking mode, and the electrical energy converted from mechanical energy can be recharged into the lithium iron phosphate battery pack.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

Fig. 2 is a top view of the vehicle frame in the embodiment of the utility model.

Detailed ways

Below in conjunction with Fig. 1, Fig. 2 the utility model is described in detail:

A mining explosion-proof lithium iron phosphate locomotive, comprising a vehicle frame 1, a running device 5 and a driving device are installed on the lower part of the vehicle frame 1, and the driving device includes a traction motor 14 installed on the vehicle frame 1, and the traction motor 14 is in transmission connection with the walking device 5 , the vehicle frame 1 is equipped with a lithium iron phosphate battery pack 10 , and the lithium iron phosphate battery pack 10 is electrically connected with the traction motor 14 .

The lithium iron phosphate battery pack includes several battery branches connected in parallel, each battery branch includes several batteries connected in series, each battery has a battery control board, and the battery control board integrates a voltage detection circuit and a temperature detection circuit As well as the performance equalization circuit, all battery control boards are centrally controlled by the battery management system through the 4-core CAN bus, which can realize automatic equalization of voltage and current, and automatic protection during overvoltage, undervoltage, overtemperature and overload.

According to the voltage of the lithium iron phosphate single battery is 3.2V, the maximum capacity of the single battery limited by the coal mine is 100Ah, then the voltage of the battery pack after series and parallel connection is 3.2*n, the maximum capacity is 100*mAh, and the AC380V constant current can be connected through the flameproof plug Charge with a current constant voltage charger.

The vehicle frame 1 is equipped with a flameproof plug 12 and a chopper control box 15 , and the lithium iron phosphate battery pack 10 and the traction motor 14 are electrically connected through the flameproof plug 12 and the chopper control box 15 .

The chopper control box 15 is provided with a direction control switch and a driver's operating handle, the direction control switch is used to control forward travel or backward travel, and the driver's operating handle is used to adjust travel speed or braking speed, according to the driver's operating handle Swing angle, the core circuit in the chopper control box generates a PWM signal of pulse width modulation, which acts on the controllable IGBT power module, adjusts the voltage at both ends of the traction motor, realizes voltage regulation start and voltage regulation, and regulates the energy in the process It is no longer consumed on the resistance, which improves the energy utilization rate of the battery pack.

The outside of the vehicle frame 1 is provided with a cover plate bracket 9, a ceiling 2 is installed on the upper part of the vehicle frame 1, an alarm bell 8 and a lighting lamp 11 are installed on the ceiling 2, and a human-computer interaction display 13 is installed in the ceiling 2, and the human-computer interaction The display 13 is electrically connected to the lithium iron phosphate battery pack 10 .

The human-computer interaction display 13 adopts a TFT liquid crystal display, which cyclically displays the voltage and temperature of each battery, the total voltage and average temperature of the battery pack, the charging and discharging current of each branch, and the total charging and discharging current of the battery pack. If there is a faulty battery, the number of the faulty battery will be displayed to remind you to replace it. If there is an alarm for high voltage, high temperature, or current overload, the corresponding alarm information will be displayed for easy handling. If there is a low voltage, the corresponding alarm information will be displayed. Remind to charge in time.

The running device 5 includes a wheel 14 installed at the bottom of the vehicle frame 1 , and a damping spring 4 is installed between the wheel 14 and the vehicle frame 1 .

The front and rear ends of the vehicle frame 1 are respectively provided with buffers 7 .

The vehicle frame 1 is provided with a braking device 3 and a sand spreading device 6, which are used for backup when the electric braking force is insufficient or in an emergency.

Compared with the wire-type electric locomotive, the utility model has no spark in operation, is safer, and can be used in an environment with a high gas concentration;

Compared with diesel electric locomotives, the utility model has no pollution, is more environmentally friendly, and has more economical use costs;

Compared with the lead-acid electric locomotive, the charging speed of the utility model is fast, and it can be fully charged in 40 minutes;

The utility model has a long service life and can be recharged and discharged 2000 times. Under the same capacity, the lithium iron phosphate battery pack is smaller in size and lighter in weight. It can be discharged with a large current, and the power of the electric locomotive is more sufficient. low cost.

Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above-mentioned examples, and changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the present utility model are also acceptable. Should belong to the protection scope of the present utility model.

Claims (10)

1. a mine explosion-suppression LiFePO4 electric locomotive comprises vehicle frame, and the bottom of said vehicle frame is equipped with running gear and actuating device, it is characterized in that: said vehicle frame is equipped with the ferric phosphate lithium cell group, is electrically connected between ferric phosphate lithium cell group and the actuating device.

2. a kind of mine explosion-suppression LiFePO4 electric locomotive according to claim 1, it is characterized in that: said actuating device comprises the traction motor that is installed on the vehicle frame, traction motor is in transmission connection with running gear, is electrically connected with the ferric phosphate lithium cell group.

3. a kind of mine explosion-suppression LiFePO4 electric locomotive according to claim 1 and 2; It is characterized in that: said ferric phosphate lithium cell group comprises the battery branch road that several are parallelly connected; Each battery branch road comprises some joint series connected battery; Every batteries all has a battery control desk, integrated voltage detecting circuit, temperature sensing circuit and balancing performance circuit on the battery control desk.

4. a kind of mine explosion-suppression LiFePO4 electric locomotive according to claim 3, it is characterized in that: said vehicle frame is equipped with flame proof latch and copped wave control box, is electrically connected through flame proof latch and copped wave control box between ferric phosphate lithium cell group and the traction motor.

5. a kind of mine explosion-suppression LiFePO4 electric locomotive according to claim 4 is characterized in that: said copped wave control box is provided with a direction control switch and a driver operation handle.

6. a kind of mine explosion-suppression LiFePO4 electric locomotive according to claim 5, it is characterized in that: the top of said vehicle frame is equipped with ceiling, and the man-machine interaction telltale is installed in the said ceiling, and the man-machine interaction telltale is electrically connected with the ferric phosphate lithium cell group.

7. a kind of mine explosion-suppression LiFePO4 electric locomotive according to claim 6 is characterized in that: said man-machine interaction telltale adopts the TFT Liquid Crystal Display (LCD).

8. a kind of mine explosion-suppression LiFePO4 electric locomotive according to claim 7, it is characterized in that: said running gear comprises the wheel that is installed in the vehicle frame bottom, between said wheel and the vehicle frame damping spring is installed.

9. a kind of mine explosion-suppression LiFePO4 electric locomotive according to claim 8, it is characterized in that: the rear and front end of said vehicle frame is respectively equipped with energy disperser.

10. a kind of mine explosion-suppression LiFePO4 electric locomotive according to claim 9 is characterized in that: said vehicle frame is provided with brake equipment and sands device.

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