Mining vehicle and method for its energy supply

• US 20130206490A1
• Filed: 12/27/2010
• Published: 08/15/2013
• Est. Priority Date: 12/28/2009
• Status: Active Grant

• Current Assignee: Sandvik Mining and Construction OY (Sandvik AB)
• Original Assignee: Sandvik Mining and Construction OY (Sandvik AB)
• Inventors: Kouvo, Mikko, Osara, Jukka, Piipponen, Juha
• Granted Patent: US 8,714,286 B2
• Time in Patent Office: Days
• US Class Current: 180/65.1
• CPC Class Codes: B60K 1/00 Arrangement or mounting of electrical propulsion units B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00; electric transmission arrangements B60K17/12; electric equipment or propulsion of electrically-propelled vehicles per se B60L; current-collectors for power supply lines of electrically-propelled vehicles B60L5/00
• CPC Class Codes: B60L 1/003 to auxiliary motors, e.g. for pumps, compressors
• CPC Class Codes: B60L 2200/40 Working vehicles
• CPC Class Codes: B60L 2210/10 DC to DC converters
• CPC Class Codes: B60L 50/53 in combination with an external power supply, e.g. from overhead contact lines
• CPC Class Codes: B60L 53/20 characterised by converters located in the vehicle
• CPC Class Codes: B60L 9/12 with static converters
• CPC Class Codes: B60L 9/18 fed from dc supply lines
• CPC Class Codes: B60L 9/24 fed from ac supply lines
• CPC Class Codes: B60Y 2200/412 Excavators
• CPC Class Codes: B60Y 2200/49 Movable platforms, Load ramps, e.g. working platforms
• CPC Class Codes: E21B 7/025 Rock drills, i.e. jumbo drills
• CPC Class Codes: E21F 17/06 Distributing electric power; Cable networks; Conduits for cables circuit arrangements for supplying or distributing electric power in general H02J
• CPC Class Codes: H02J 7/34 Parallel operation in networks using both storage and other dc sources, e.g. providing buffering H02J7/14 takes precedence
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 10/92 Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

The invention relates to a mining vehicle and method for its energy supply. The mining vehicle has a rectifier, DC intermediate circuit, and inverter, through which an alternating current motor is supplied. At least one auxiliary energy source is connected to the DC intermediate circuit. A DC/DC converter is connected between the DC intermediate circuit and the auxiliary energy source for adapting the voltage level of the auxiliary energy source and for connecting the auxiliary energy source to supply energy to the DC intermediate circuit.

Claims

1. A mining vehicle having

a carriage,

driving equipment for moving the carriage,

at least one mining work device, which mining work device is one of the following:

rock drilling machine, bolting device, shotcrete apparatus, scaling device, injection device, blasthole charger, measuring device,

an alternating current motor,

a connection for supplying the mining vehicle from the electrical network of the mine,

a DC intermediate circuit, to which electricity is supplied from the electrical network of the mine with a rectifier,

an inverter for supplying the electrical energy of the DC intermediate circuit to the alternating current motor,

an auxiliary energy source connected to the DC intermediate circuit (28), and

a DC/DC converter between the auxiliary energy source and DC intermediate circuit configured to adapt the voltage level of the auxiliary energy source and configured to connect the auxiliary energy source to supply energy to the DC intermediate circuit, whereby auxiliary energy sources having different properties are connectable to the mining vehicle.

2. A mining vehicle as claimed in claim 1, wherein the mining vehicle has at least two DC/DC converters connected in parallel.

3. A mining vehicle as claimed in claim 1, wherein the mining vehicle has at least two auxiliary energy sources connected in parallel to the DC intermediate circuit.

4. A mining vehicle as claimed in claim 1, wherein the auxiliary energy source is connected to supply energy through the DC intermediate circuit to the alternating current motor of the mining vehicle when the energy requirement of the mining vehicle exceeds a certain limit while the mining vehicle simultaneously also receives energy from the electrical network of the mine.

5. A mining vehicle as claimed in claim 1, wherein the auxiliary energy source is a battery.

6. A mining vehicle as claimed in claim 1, wherein the rectifier of the mining vehicle is adapted to convert the supply voltage of at least two different-voltage electrical networks of the mine to be the same in the DC intermediate circuit.

7. A mining vehicle as claimed in claim 1, wherein the mining vehicle is a rock drilling rig.

8. A method for the energy supply of a mining vehicle with a carriage, drive equipment for moving the carriage, at least one mining work device, which mining work device is one of the following:

rock drilling machine, bolting device, shotcrete apparatus, scaling device, injection device, blasthole charger, measuring device; and

at least one alternating current motor that is supplied from the electrical network of the mine through a rectifier, DC intermediate circuit and inverter, wherein, by means of a DC/DC converter, the voltage level of an auxiliary energy source is adapted to the DC intermediate circuit and the auxiliary energy source is adapted to supply energy to the DC intermediate circuit, whereby auxiliary energy sources of different properties are connectable to the mining vehicle.

9. A method as claimed in claim 8, comprising supplying energy to the mining vehicle simultaneously from the electrical network of the mine and from the auxiliary energy source when the energy requirement of the mining vehicle exceeds a certain limit.

10. A method as claimed in claim 8, comprising adapting the rectifier of the mining vehicle to convert the supply voltages of at least two different-voltage electrical networks of the mine to be the same in the DC intermediate circuit.

11. A mining vehicle with a carriage, drive equipment for moving the carriage, at least one mining work device, which the mining work device is one of the following:

rock drilling machine, bolting device, shotcrete apparatus, scaling device, injection device, blasthole charger, measuring device;

an alternating current motor, a connection for supplying the mining vehicle from the electrical network of the mine, a DC intermediate circuit, to which electricity is supplied from the electrical network of the mine with a rectifier, an inverter for supplying the electrical energy of a DC intermediate circuit to the alternating current motor, and an auxiliary energy source connected to the DC intermediate circuit wherein the auxiliary energy source is connected to supply energy through the DC intermediate circuit to the alternating current motor of the mining vehicle when the energy requirement of the mining vehicle exceeds a certain limit while the mining vehicle simultaneously also receives energy from the electrical network of the mine.