Uninterruptible power supply device for inertial navigation of coal mining machine and coal mining machine

Abstract

The utility model relates to an uninterruptible power supply device for inertial navigation of a coal mining machine and the coal mining machine. The uninterruptible power supply device comprises a first circuit connected with the power supply output end, a battery pack, a battery management system connected with the battery pack, a second circuit connected between the battery management system and the power supply output end, and a first relay connected between the first circuit and the second circuit. The second circuit is disconnected, and the electric control system of the coal mining machine supplies power to the inertial navigation system through the first circuit; when the coal mining machine is powered off, the first relay is not closed, the second circuit is connected, and the battery pack supplies power to the inertial navigation through the second circuit, so that the problem that the production efficiency of the coal mining machine is influenced by frequent preparation of the inertial navigation due to overall power failure of the coal mining machine is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to power supply technical field especially relates to a kind of uninterrupted power supply device for coal winning machine inertial navigation and coal winning machine. BACKGROUND

[0002] Coal mine underground usually uses high-precision inertial navigation system (inertial navigation system is called inertial navigation) and coal winning machine odometer combined positioning algorithm, to realize the high-precision positioning and navigation of equipment in GPS rejection environment. Install inertial navigation in the electric control box of coal winning machine, in the reciprocating motion of coal winning machine cutting operation, and then describe the curve data of coal winning machine along the advancing direction of working face, to accurately monitor the profile curve of working face, and then adjust the straightness of fully mechanized working face in continuous production process.

[0003] Due to the characteristics of inertial navigation device, after initial alignment is completed in the stationary state of carrier, alignment time is usually 3-5 minutes to output attitude data, but due to the particularity of coal winning machine power supply in coal mine and the characteristics of high-gas mine exploitation, coal winning machine is powered off frequently, and the power-off duration is determined by ventilation and other safety measures. After inertial navigation is restarted, it will be ready for action again, and during this period, the coal winning machine traction needs to be locked to ensure that the coal winning machine is in a stationary state, which greatly affects the mining efficiency of coal mine. SUMMARY

[0004] To solve the problems of the prior art, the utility model provides a kind of uninterrupted power supply device for coal winning machine inertial navigation, to realize that inertial navigation is powered by uninterrupted power supply device under the condition of the whole power-off of coal winning machine, to solve the problem that the production efficiency of coal winning machine is affected by the frequent readiness of inertial navigation due to the whole power-off of coal winning machine.

[0005] To solve the above technical problems, the present application adopts the following technical scheme:

[0006] A kind of uninterrupted power supply device for coal winning machine inertial navigation, it has the power output end of electric connection with inertial navigation, the uninterrupted power supply device includes:

[0007] First circuit, the first circuit is connected with the power output end;

[0008] Battery pack;

[0009] Battery management system, it is electrically connected with the battery pack;

[0010] Second circuit, the second circuit is connected between the battery management system and power output end;

[0011] First relay, the first relay is connected between the first circuit and second circuit;

[0012] When the coal mining machine is normally powered, the first relay is closed, the second circuit is disconnected, and the electric control system of the coal mining machine supplies power to the inertial navigation system through the first circuit; when the coal mining machine is powered off, the first relay is not closed, the second circuit is connected, and the battery pack supplies power to the inertial navigation system through the second circuit.

[0013] In some embodiments, an under-voltage protector is arranged on the second circuit, and the battery management system can be used to monitor the output voltage of the battery pack and control the under-voltage protector to work, so that when the battery management system detects that the output voltage of the battery pack is lower than a preset value during the power supply of the battery pack, the battery management system controls the under-voltage protector to disconnect the second circuit.

[0014] In some specific embodiments, on the second circuit, the connection point of the first relay and the second circuit is located between the under-voltage protector and the power output end.

[0015] In some specific embodiments, a diode is arranged on the first circuit, and the diode is used to prevent the uninterrupted power supply device from reverse power supply during the power-off of the coal mining machine.

[0016] In some embodiments, the battery pack is a rechargeable battery pack.

[0017] In some specific embodiments, the uninterrupted power supply device further comprises a third circuit, and the electric control system of the coal mining machine is connected to the battery management system through the third circuit, and a battery pack charger is arranged on the third circuit, and the battery pack charger is used to charge the battery pack when the coal mining machine is normally powered.

[0018] In some specific embodiments, the uninterrupted power supply device further comprises a second relay, and the second relay is connected between the first circuit and the third circuit.

[0019] When the coal mining machine is normally powered, the second relay is closed, and the third circuit is connected; when the coal mining machine is powered off, the second relay is not closed, and the third circuit is disconnected.

[0020] In some specific embodiments, the battery pack, the battery management system, the first relay, the diode, the second relay, and the battery pack charger are integrated.

[0021] In some specific embodiments, the uninterrupted power supply device further has a first power input end and a second power input end, the first circuit is further connected to the first power input end, and the third circuit is connected to the second power input end.

[0022] The first power input end inputs a DC 24V direct current power supply.

[0023] The second power input terminal inputs AC220V AC power.

[0024] In some specific embodiments, the battery management system is further provided with a communication interface, which includes but is not limited to a 485 communication interface, a CAN communication interface or an Ethernet communication interface.

[0025] In some specific implementations, the power output terminal outputs a DC24V direct current power supply.

[0026] In some embodiments, the battery pack includes but is not limited to a lithium-ion battery.

[0027] The second technical solution adopted in this application is: a coal mining machine, which includes the above-mentioned uninterruptible power supply device for inertial navigation of the coal mining machine.

[0028] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0029] The uninterruptible power supply device of the present application can automatically switch the power supply of the inertial navigation system from the electrical control system of the coal mining machine to the power supply of the battery pack during the power outage of the coal mining machine, ensuring the normal operation of the inertial navigation system during the power outage of the coal mining machine, and solving the problem of frequent readiness of the inertial navigation system due to the overall power outage of the coal mining machine affecting the production efficiency of the coal mining machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0031] Figure 1 This is a structural schematic diagram of an uninterruptible power supply device for an inertial navigation system of a coal mining machine according to an embodiment of the present invention;

[0032] Figure 2 for Figure 1 The power supply principle diagram of the uninterruptible power supply device (when the coal mining machine is powered off);

[0033] Figure 3 for Figure 1 The power supply principle diagram of the uninterruptible power supply device (when the coal mining machine is powered on normally);

[0034] Reference signs :

[0035] 1. battery pack; 2. battery management system; 3. first relay; 4. second relay; 5. diode; 6. inertial navigation; 7. battery pack charger; 8. communication interface; 9. under-voltage protector; 10. first circuit; 11. second circuit; 12. third circuit. DETAILED DESCRIPTION

[0036] In order for those skilled in the art to better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by those skilled in the art should belong to the scope of protection of the embodiments of the present application.

[0037] Referring to Figures 1 to 3 The uninterrupted power supply device for the coal mining machine inertial navigation shown in the figure is used for supplying power to the inertial navigation 6, and the uninterrupted power supply device has a power output end electrically connected with the inertial navigation 6.

[0038] Referring to Figures 2 to 3 The uninterrupted power supply device includes a first circuit 10, a battery pack 1, a battery management system 2, a second circuit 11, and a first relay 3, wherein:

[0039] The first circuit 10 is connected with the power output end, and when the coal mining machine is normally powered on, the electric control system of the coal mining machine supplies power to the inertial navigation 6 through the first circuit 10;

[0040] The battery management system 2 is electrically connected with the battery pack 1, and the battery management system 2 has the functions of battery power monitoring, charging and discharging state, battery over-voltage protection, battery under-voltage protection, battery life estimation, and external communication, etc.

[0041] The second circuit 11 is connected between the power output ends of the battery management system 2, and when the coal mining machine is powered off, the battery pack 1 supplies power to the inertial navigation 6 through the second circuit 11;

[0042] The first relay 3 is connected between the first circuit 10 and the second circuit 11, and when the coal mining machine is normally powered on, the first relay 3 is closed and the second circuit 11 is disconnected; when the coal mining machine is powered off, the first relay 3 is not closed and the second circuit 11 is connected.

[0043] When the coal mining machine is normally powered on and works, the electric control system of the coal mining machine directly supplies power to the inertial navigation 6 through the first circuit 10, at this time, the first relay 3 is closed, the second circuit 11 is disconnected, and the battery pack 1 cannot supply power to the inertial navigation 6 through the second circuit 11.

[0044] When the coal mining machine is powered off, the first circuit 10 cannot supply power, the first relay 3 cannot be closed, the second circuit 11 is connected, and the battery pack 1 can supply power to the inertial navigation system 6 through the second circuit 11.

[0045] In some embodiments, an under-voltage protector 9 is arranged on the second circuit 11, and the battery management system 2 can monitor the output voltage of the battery pack 1 and control the operation of the under-voltage protector 9. During the power supply process of the battery pack 1, when the battery management system 2 detects that the output voltage of the battery pack 1 is lower than a preset value, the battery management system 2 controls the under-voltage protector 9 to disconnect the second circuit 11, preventing the battery pack 1 from over-discharging and shortening the service life of the battery.

[0046] On the second circuit 11, the connection point of the first relay 3 and the second circuit 11 is located between the under-voltage protector 9 and the power output end.

[0047] In some embodiments, a diode 5 is arranged on the first circuit 10, and the diode 5 is arranged on the loop of the first circuit 10. The diode 5 is used to prevent the uninterrupted power supply device from supplying power in reverse during the power-off period of the coal mining machine, prevent the uninterrupted power supply device from supplying power to other equipment of the coal mining machine (i.e., other equipment except the inertial navigation system 6) in reverse during the power-off period of the coal mining machine, increase the power loss of the uninterrupted power supply device, and reduce the power supply time of the uninterrupted power supply device.

[0048] In some embodiments, the battery pack 1 uses a large-capacity battery pack, such as a large-capacity rechargeable battery pack, specifically a lithium-ion battery.

[0049] The uninterrupted power supply device further includes a third circuit 12 and a second relay 4. The electric control system of the coal mining machine is connected to the battery management system 2 through the third circuit 12. A battery pack charger 7 is arranged on the third circuit 12, and the battery pack charger 7 is used to charge the battery pack 1 when the coal mining machine is normally powered on.

[0050] The second relay 4 is connected between the first circuit 10 and the third circuit 12. When the coal mining machine is normally powered on, the second relay 4 is closed, and the third circuit 12 is connected. When the coal mining machine is powered off, the second relay 4 is not closed, and the third circuit 12 is disconnected.

[0051] The two ends of the coil of the first relay 3 and the two ends of the coil in the second relay 4 are connected to the first circuit 10. The electric control system of the coal mining machine applies voltage to the coil of the first relay 3 and the coil of the second relay 4 through the first circuit 10.

[0052] Through the setting of the above-mentioned embodiment, the charging and discharging circuit switching of the battery pack 1 can be realized. During the normal power-on working period of the coal mining machine, the electric control system of the coal mining machine charges the battery pack 1 through the battery pack charger 7. During the power-off period of the coal mining machine, the uninterrupted power supply device automatically switches the power supply of the inertial navigation system 6 from the charging of the battery pack 1 by the electric control system of the coal mining machine to the power supply by the battery pack 1, and simultaneously disconnects the third circuit 12 provided with the battery pack charger 7 and the first circuit 10, thereby avoiding the reverse power supply of the battery pack 1 to the battery pack charger 7 and through the first circuit 10, and improving the power supply duration of the uninterrupted power supply system device.

[0053] In some embodiments, the battery pack 1, the battery management system 2, the first relay 3, the diode 5, the second relay 4, and the battery pack charger 7 are integrated, which is convenient for installation.

[0054] The uninterrupted power supply device has a first power input end and a second power input end. The first circuit 10 is further connected to the first power input end, and the third circuit 12 is connected to the second power input end. In some specific embodiments, the first power input end is connected to a DC 24V direct current power supply, and the second power input end is connected to an AC 220V alternating current power supply. The DC 24V direct current power supply directly supplies power to the inertial navigation system 6 through the first circuit 10. The AC 220V alternating current power supply is connected to the third circuit 12. When the coal mining machine is normally powered on, the battery pack 1 is charged by the battery pack charger 7.

[0055] In some embodiments, the battery management system 2 has a communication interface 8, which includes but is not limited to a 485 communication interface, a CAN communication interface, a 2-core Ethernet communication interface, etc. The battery management system 2 has functions such as charging and discharging state of the battery pack 1, overcharge protection, and overdischarge protection. The state of the battery management system 2 can be interacted with the electric control system of the coal mining machine in real time through the communication interface 8, and monitored and warned through the early warning system of the coal mining machine.

[0056] In some embodiments, the battery management system 2 adopts three-proof spraying, full-rubber-sealed fixation, and is provided with an output maximum current protection fuse. The wiring end is fixed by a locking screw and has a rubber-sealed moisture-proof process. The entire uninterrupted power supply device adopts modular design and is fixed on an independent mounting plate, which is convenient for installation and maintenance.

[0057] In some embodiments, the coal mining machine containing the above-mentioned uninterrupted power supply device can ensure the normal working of the inertial navigation system under the power-off condition of the coal mining machine.

[0058] The uninterrupted power supply device provided by the above-mentioned embodiment has at least the following advantages:

[0059] 1) the uninterrupted power supply device can realize that the inertial navigation 6 is directly powered by the electric control system of the coal mining machine through the first circuit 10 when the coal mining machine is normally working, and the inertial navigation 6 is powered by the battery pack 1 in the case of the whole power-off of the coal mining machine, thereby solving the influence of frequent readiness of the inertial navigation 6 caused by frequent power-off of the coal mining machine in the cutting process on the mining efficiency.

[0060] 2) the lithium ion battery pack is used as an energy storage device, and the battery management system 2 with multiple functions is combined to realize real-time monitoring of the state of the battery pack 1, realize functions such as complete large-capacity battery pack fast charging, safe discharging protection, online backup power (namely, the battery pack) switching, and provide safe and stable backup power for the inertial navigation 6 after the whole machine of the coal mining machine is powered off.

[0061] 3) the uninterrupted power supply device charges the battery pack 1 through the battery pack charger 7 of the third circuit 12 for standby when the coal mining machine is normally working, and automatically cuts off the third circuit 12 and automatically switches the battery pack 1 to power the inertial navigation 6 through the second circuit 11 when the coal mining machine is powered off. At the same time, the third circuit 12 and the first circuit 10 are disconnected during the power-off of the coal mining machine, so as to avoid reverse power supply of the battery pack 1 to the battery pack charger 7 and other equipment (equipment other than the inertial navigation) of the coal mining machine, and improve the power supply time of the battery pack 1.

[0062] It should be further noted that the terms "first", "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features.

[0063] In addition, in the description of the present application, unless otherwise specified and limited, it should be noted that the terms "mounting", "connection" should be understood broadly, for example, it can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, or indirect connection through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0064] The above embodiments are only used to illustrate the present application, and are not limited to the present application. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, all equivalent technical solutions also belong to the scope of the present application, and the patent protection scope of the present application should be defined by the claims.

Claims

1. An uninterruptible power supply device for inertial navigation of a coal mining machine, characterized in that: The uninterruptible power supply device has a power output terminal connected to the inertial conductor, and the uninterruptible power supply device includes: a first circuit connected to the power output terminal; Battery pack; a battery management system electrically connected to the battery pack; a second circuit connected between the battery management system and a power output terminal; a first relay connected between the first circuit and the second circuit; When the coal mining machine is powered on normally, the first relay is closed, the second circuit is disconnected, and the electrical control system of the coal mining machine supplies power to the inertial navigation system through the first circuit; when the coal mining machine is powered off, the first relay is not closed, the second circuit is connected, and the battery pack supplies power to the inertial navigation system through the second circuit.

2. The uninterruptible power supply device for inertial navigation of a coal mining machine according to claim 1, characterized in that: An undervoltage protector is provided on the second circuit, and the battery management system can be used to monitor the output voltage of the battery pack and control the operation of the undervoltage protector. During the power supply process of the battery pack, when the battery management system detects that the output voltage of the battery pack is lower than a preset value, the battery management system controls the undervoltage protector to disconnect the second circuit.

3. The uninterruptible power supply device for inertial navigation of a coal mining machine according to claim 2, characterized in that: On the second circuit, a connection point between the first relay and the second circuit is located between the undervoltage protector and the power output terminal.

4. The uninterruptible power supply device for inertial navigation of a coal mining machine according to claim 1, characterized in that: A diode is provided on the first circuit, and the diode is used to prevent the uninterruptible power supply device from supplying reverse power during a power outage of the coal mining machine.

5. The uninterruptible power supply device for inertial navigation of a coal mining machine according to any one of claims 1 to 4, characterized in that: The battery pack is a rechargeable battery pack.

6. The uninterruptible power supply device for inertial navigation of a coal mining machine according to claim 5, characterized in that: The uninterruptible power supply device also includes a third circuit, and the coal mining machine's electronic control system is connected to the battery management system through the third circuit. A battery pack charger is provided on the third circuit, and the battery pack charger is used to charge the battery pack when the coal mining machine is normally powered on.

7. The uninterruptible power supply device for inertial navigation of a coal mining machine according to claim 6, characterized in that: The uninterruptible power supply further includes a second relay connected between the first circuit and the third circuit; When the coal mining machine is powered on normally, the second relay is closed and the third circuit is connected; when the coal mining machine is powered off, the second relay is not closed and the third circuit is disconnected.

8. The uninterruptible power supply device for inertial navigation of a coal mining machine according to claim 7, characterized in that: The battery pack, battery management system, first relay, diode, second relay, and battery pack charger are integrated into one; and / or, The uninterruptible power supply device further comprises a first power input terminal and a second power input terminal, the first circuit is further connected to the first power input terminal, and the third circuit is connected to the second power input terminal; The first power input terminal inputs a DC24V direct current power supply; The second power input terminal inputs AC220V AC power.

9. The uninterruptible power supply device for inertial navigation of a coal mining machine according to claim 1, characterized in that: The battery management system is further provided with a communication interface, which includes a 485 communication interface, a CAN communication interface or an Ethernet communication interface; and / or, The power output terminal outputs a DC24V direct current power supply; and / or, The battery pack includes lithium-ion batteries.

10. A coal mining machine, characterized in that: The coal mining machine includes the uninterruptible power supply device for coal mining machine inertial navigation according to any one of claims 1 to 9.

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