CA2902691C - Mining machine and charging station comprising refrigeration circuits - Google Patents
Mining machine and charging station comprising refrigeration circuits Download PDFInfo
- Publication number
- CA2902691C CA2902691C CA2902691A CA2902691A CA2902691C CA 2902691 C CA2902691 C CA 2902691C CA 2902691 A CA2902691 A CA 2902691A CA 2902691 A CA2902691 A CA 2902691A CA 2902691 C CA2902691 C CA 2902691C
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- battery
- fluid
- refrigerant
- refrigerant circuit
- mining machine
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/11—DC charging controlled by the charging station, e.g. mode 4
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/302—Cooling of charging equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/60—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements
- H02J7/65—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements against overtemperature
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/90—Regulation of charging or discharging current or voltage
- H02J7/971—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/975—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Transportation (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Secondary Cells (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
There is provided a charging station, and a mining machine comprising a battery for storing electrical energy, a refrigerant circuit for circulating a refrigerant via the battery, and a connection for connecting the refrigerant circuit to a refrigerant circuit of a charging station via a fluid-fluid heat exchanger.
Description
MINING MACHINE AND CHARGING STATION COMPRISING REFRIGERATION
CIRCUITS
FIELD OF THE INVENTION
The present invention relates to refrigeration of battery, and particu-larly refrigeration of battery in a mining machine.
BACKGROUND
A battery for storing electrical energy should be operated in a tem-perature range that supports a long lifetime of the battery. When a battery is charged electrical energy is stored to the battery for later use. When the ener-gy stored to the battery is used to supply power to an appliance, e.g. an elec-trical motor, the battery is discharged.
A typical operating temperature for a lithium-ion battery is between 0-45 C. If the temperature exceeds 45 C, the battery may be degraded.
When the temperature of the battery is higher than 45 C, electrolyte inside the battery starts to degrade, which may cause pressure inside battery cells. The pressure may accumulate inside the battery and it may be discharged from the battery along with the electrolyte, whereby personnel and equipment nearby the battery may be in danger.
A battery typically used in a mining vehicle may supply an electrical power of 100kW, when the vehicle is operated. After the battery is discharged it has to be replaced with a new one or charged. During charging of the bat-tery, the vehicle is out of production, whereby its efficiency is decreased.
The battery may be charged fast if a significantly higher power, for example 800kW, is used to charge the battery. However, the high charging power may cause the battery to heat up significantly more than during operation of the mining vehicle and discharging of the battery.
BRIEF DESCRIPTION OF THE INVENTION
An object of the present invention is to provide a mining machine and a charging station comprising refrigerant circuits so as to so as to alleviate the above disadvantages. The objects of the invention are achieved by a min-ing machine and a charging station.
An advantage of the mining machine and charging station according I
. .
CIRCUITS
FIELD OF THE INVENTION
The present invention relates to refrigeration of battery, and particu-larly refrigeration of battery in a mining machine.
BACKGROUND
A battery for storing electrical energy should be operated in a tem-perature range that supports a long lifetime of the battery. When a battery is charged electrical energy is stored to the battery for later use. When the ener-gy stored to the battery is used to supply power to an appliance, e.g. an elec-trical motor, the battery is discharged.
A typical operating temperature for a lithium-ion battery is between 0-45 C. If the temperature exceeds 45 C, the battery may be degraded.
When the temperature of the battery is higher than 45 C, electrolyte inside the battery starts to degrade, which may cause pressure inside battery cells. The pressure may accumulate inside the battery and it may be discharged from the battery along with the electrolyte, whereby personnel and equipment nearby the battery may be in danger.
A battery typically used in a mining vehicle may supply an electrical power of 100kW, when the vehicle is operated. After the battery is discharged it has to be replaced with a new one or charged. During charging of the bat-tery, the vehicle is out of production, whereby its efficiency is decreased.
The battery may be charged fast if a significantly higher power, for example 800kW, is used to charge the battery. However, the high charging power may cause the battery to heat up significantly more than during operation of the mining vehicle and discharging of the battery.
BRIEF DESCRIPTION OF THE INVENTION
An object of the present invention is to provide a mining machine and a charging station comprising refrigerant circuits so as to so as to alleviate the above disadvantages. The objects of the invention are achieved by a min-ing machine and a charging station.
An advantage of the mining machine and charging station according I
. .
2 to the present invention is that the battery may be cooled down by different refrigerant circuits. A refrigerant circuit providing a suitable cooling power may be used during charging and another refrigerant circuit may be used during operation of the mining machine. This allows dimensioning the refrigerant cir-5 cults according to the need for cooling power that may vary significantly be-tween the charging of the battery and discharging of the battery.
In some embodiments, the battery may be cooled down by a refrig-erant circuit having a smaller cooling power, when the battery is not being charged, than a refrigerant circuit used to cool down the battery during charg-10 ing of the battery.
BRIEF DESCRIPTION OF THE DRAWINGS
In the following the invention will be described in greater detail by means of preferred embodiments with reference to the accompanying draw-ings, in which 15 Figure 1 illustrates an example of a battery powered vehicle, ac-cording to an embodiment;
Figures 2a and 2b illustrate refrigerant circuits according to embod-iments.
DETAILED DESCRIPTION OF THE INVENTION
20 Figure 1 illustrates an example of a battery powered vehicle 1, ac-cording to an embodiment. The battery powered vehicle comprises a battery 10. The battery may be capable of storing electrical energy to be supplied to one or more functions of the vehicle. The battery may be enclosed within an encasement for protecting the battery from damages. The electrical energy 25 from the battery may be used to power transportation of goods and/or people by the vehicle. In an embodiment the battery may be lithium-ion battery.
A refrigeration device 11 may be connected to the battery for refrig-erating, i.e. cooling, the battery. Preferably, the refrigeration device has a cool-ing power that is sufficient to refrigerate the battery, when the battery is dis-30 charged and is supplying electrical power to power operations of the vehicle.
The refrigeration device may have a refrigerant circuit for circulating a refrigerant via the battery and a fluid-fluid heat exchanger connected to the refrigerant circuit. The fluid-fluid heat exchanger is connectable to an external refrigerant circuit for transferring heat between the refrigerant circuit and the 35 external refrigerant circuit. The external refrigerant circuit may be the refriger-r
In some embodiments, the battery may be cooled down by a refrig-erant circuit having a smaller cooling power, when the battery is not being charged, than a refrigerant circuit used to cool down the battery during charg-10 ing of the battery.
BRIEF DESCRIPTION OF THE DRAWINGS
In the following the invention will be described in greater detail by means of preferred embodiments with reference to the accompanying draw-ings, in which 15 Figure 1 illustrates an example of a battery powered vehicle, ac-cording to an embodiment;
Figures 2a and 2b illustrate refrigerant circuits according to embod-iments.
DETAILED DESCRIPTION OF THE INVENTION
20 Figure 1 illustrates an example of a battery powered vehicle 1, ac-cording to an embodiment. The battery powered vehicle comprises a battery 10. The battery may be capable of storing electrical energy to be supplied to one or more functions of the vehicle. The battery may be enclosed within an encasement for protecting the battery from damages. The electrical energy 25 from the battery may be used to power transportation of goods and/or people by the vehicle. In an embodiment the battery may be lithium-ion battery.
A refrigeration device 11 may be connected to the battery for refrig-erating, i.e. cooling, the battery. Preferably, the refrigeration device has a cool-ing power that is sufficient to refrigerate the battery, when the battery is dis-30 charged and is supplying electrical power to power operations of the vehicle.
The refrigeration device may have a refrigerant circuit for circulating a refrigerant via the battery and a fluid-fluid heat exchanger connected to the refrigerant circuit. The fluid-fluid heat exchanger is connectable to an external refrigerant circuit for transferring heat between the refrigerant circuit and the 35 external refrigerant circuit. The external refrigerant circuit may be the refriger-r
3 ant circuit of a charging station 9. Both of the refrigerant circuits have fluid lines that contain a refrigerant that is moved within the fluid lines for transferring heat away from target that is being cooled. The refrigerants of the refrigerant circuits may be selected to provide a sufficient cooling power and they may be the same.
The battery powered vehicle may comprise a carriage 2 that may be moved by means of drive equipment 3. The drive equipment 3 may comprise one or more drive motors 4 and one or more power transmission means 5 for transmitting drive power to one or more wheels 6. The drive power transmis-sion may comprise a mechanical gear system and mechanical power trans-mission members or, alternatively, a hydraulic or electric drive power system may be used. The drive equipment may be connected to the battery for supply-ing electricity to the drive equipment from the battery. The connection may comprise an electrically conductive cable, shown by a dashed line in the Figure 1 between the battery and the drive equipment. Accordingly, the movement of the vehicle may be powered by electricity from the battery. It should be appre-ciated that the vehicle may have also other power sources in addition to the battery.
The battery powered vehicle may comprise a dump 20 and/or a drill for production operations of the vehicle. The productive operations may be mining operations, when the vehicle is a mining machine. The production op-erations may be powered by the drive equipment. The vehicle may be have a water system that is used for or is a part of the drill.
The charging station may be located in an operational area 14 of the vehicle or in a service area of the vehicle. The operational area of the vehi-cle may be for example a mine. The charging station may comprise an electri-cal outlet 17 for charging the battery of the vehicle with electrical energy.
The electrical outlet may be connected to the vehicle by at least one electrically conductive cable for charging the battery. The charging station may further comprise a connection 12, 13 for connecting a refrigerant circuit of the charg-ing station to a fluid-fluid heat exchanger in the vehicle. The connection may be provided by an inlet connection 12 for feeding refrigerant to the fluid-fluid heat exchanger, and an outlet connection 13 for receiving heated refrigerant from the fluid-fluid heat exchanger. The inlet and outlet connections may be provided by hoses arranged on reels. The inlet and outlet connections of the charging station may be connected to connectors 15, 16 of the refrigerant dr-
The battery powered vehicle may comprise a carriage 2 that may be moved by means of drive equipment 3. The drive equipment 3 may comprise one or more drive motors 4 and one or more power transmission means 5 for transmitting drive power to one or more wheels 6. The drive power transmis-sion may comprise a mechanical gear system and mechanical power trans-mission members or, alternatively, a hydraulic or electric drive power system may be used. The drive equipment may be connected to the battery for supply-ing electricity to the drive equipment from the battery. The connection may comprise an electrically conductive cable, shown by a dashed line in the Figure 1 between the battery and the drive equipment. Accordingly, the movement of the vehicle may be powered by electricity from the battery. It should be appre-ciated that the vehicle may have also other power sources in addition to the battery.
The battery powered vehicle may comprise a dump 20 and/or a drill for production operations of the vehicle. The productive operations may be mining operations, when the vehicle is a mining machine. The production op-erations may be powered by the drive equipment. The vehicle may be have a water system that is used for or is a part of the drill.
The charging station may be located in an operational area 14 of the vehicle or in a service area of the vehicle. The operational area of the vehi-cle may be for example a mine. The charging station may comprise an electri-cal outlet 17 for charging the battery of the vehicle with electrical energy.
The electrical outlet may be connected to the vehicle by at least one electrically conductive cable for charging the battery. The charging station may further comprise a connection 12, 13 for connecting a refrigerant circuit of the charg-ing station to a fluid-fluid heat exchanger in the vehicle. The connection may be provided by an inlet connection 12 for feeding refrigerant to the fluid-fluid heat exchanger, and an outlet connection 13 for receiving heated refrigerant from the fluid-fluid heat exchanger. The inlet and outlet connections may be provided by hoses arranged on reels. The inlet and outlet connections of the charging station may be connected to connectors 15, 16 of the refrigerant dr-
4 cult 11 of the vehicle for connecting the refrigerant circuit of the charging sta-tion to the fluid-fluid heat exchanger. In this way the refrigerant circuit of the charging station may be connected to the vehicle for cooling the battery during charging of the battery. This allows dimensioning the refrigerant circuit of the vehicle for refrigeration of the battery, when the battery is not being charged and less cooling power is needed. When the battery is not being charged, the battery may be discharging. When the battery is discharging, energy stored to the battery may be consumed. The power may be consumed to one or more functions of the vehicle, for example during driving of the vehicle.
The refrigerant circuit of the charging station may be responsible for cooling the battery during charging of the battery. Preferably the refrigerant circuit of the charging station is dimensioned such that it has a higher cooling power than the refrigerant circuit of the vehicle. The dimensioning of the refrig-erant circuits may comprise considerations on an amount of fluid flow in fluid lines and/or a type of refrigerant used.
The charging station may be connected to a power source having a larger electrical power than the battery on-board the vehicle. The power source of the charging station may be for example an electrical grid or an electrical generator powered by a combustion engine. In this way more power is availa-ble for refrigeration of the battery during charging of the battery than during discharging of the battery. Since the refrigeration during charging is more effi-cient than during discharging, the battery may be charged quickly using a high charging power. The charging power may be higher than the power output of the battery, when the battery is discharged. In one example, a mean power output of the battery is 100kW during operation of the vehicle and the charging power is 800 kW, whereby it is possible to achieve an operating time of two hours for the battery, when the battery is charged for 15 minutes.
During charging the battery via the electrical outlet, refrigerant from the refrigerant circuit of the charging station is circulated via the fluid-fluid heat exchanger of the mining machine.
In an embodiment, the refrigerant circuit of the charging station may be connected to or be a part of a water supply line in a mine. Accordingly, wa-ter from the water supply line may serve as the refrigerant in the refrigerant circuit of the charging station. The water may circulate in a water system of the mine. The circulation of the water provides that water heated by the battery may be replaced by cooler water, whereby refrigeration of the charging station provided to batteries that are charged may be maintained even if the charging station would be used continuously.
The battery powered vehicle may be a mining machine 1 for exam-ple a dumper, load haul dump, loader, drilling device, rock drilling rig or any
The refrigerant circuit of the charging station may be responsible for cooling the battery during charging of the battery. Preferably the refrigerant circuit of the charging station is dimensioned such that it has a higher cooling power than the refrigerant circuit of the vehicle. The dimensioning of the refrig-erant circuits may comprise considerations on an amount of fluid flow in fluid lines and/or a type of refrigerant used.
The charging station may be connected to a power source having a larger electrical power than the battery on-board the vehicle. The power source of the charging station may be for example an electrical grid or an electrical generator powered by a combustion engine. In this way more power is availa-ble for refrigeration of the battery during charging of the battery than during discharging of the battery. Since the refrigeration during charging is more effi-cient than during discharging, the battery may be charged quickly using a high charging power. The charging power may be higher than the power output of the battery, when the battery is discharged. In one example, a mean power output of the battery is 100kW during operation of the vehicle and the charging power is 800 kW, whereby it is possible to achieve an operating time of two hours for the battery, when the battery is charged for 15 minutes.
During charging the battery via the electrical outlet, refrigerant from the refrigerant circuit of the charging station is circulated via the fluid-fluid heat exchanger of the mining machine.
In an embodiment, the refrigerant circuit of the charging station may be connected to or be a part of a water supply line in a mine. Accordingly, wa-ter from the water supply line may serve as the refrigerant in the refrigerant circuit of the charging station. The water may circulate in a water system of the mine. The circulation of the water provides that water heated by the battery may be replaced by cooler water, whereby refrigeration of the charging station provided to batteries that are charged may be maintained even if the charging station would be used continuously.
The battery powered vehicle may be a mining machine 1 for exam-ple a dumper, load haul dump, loader, drilling device, rock drilling rig or any
5 other mining vehicle. The mining vehicle 1 may be equipped with one or more mining work devices which mining work device may be one or more of the fol-lowing mining work devices: rock drilling machine, bolting machine, scaling device, injection device, blasthole charger, loading device, bucket, box, meas-uring device, or drilling, sealing and propellant feeding equipment used in small-charge excavation.
Figures 2a and 2b illustrate refrigerant circuits according to embod-iments. The refrigerant circuits may be the refrigerant circuits of the charging station and the vehicle described in Figure 1. In Figure 2a the refrigerant cir-cuits are connected in series. In Figure 2b, the refrigerant circuits are connect-ed in parallel by a three-way valve 216. The parallel and series connection of the refrigerant circuits provide that the refrigerant circuit of the vehicle and the charging station are both connected to a fluid-fluid heat exchanger 202 such that refrigerant from the circuits may flow to the fluid-fluid heat exchanger.
Preferably, the refrigerant circuits are connected to the fluid-fluid heat ex-changer during charging of the battery 210 of the vehicle such that the refrig-erant from the refrigerant circuit of the charging station may cool down the bat-tery.
It should be appreciated that, when the battery is not charged the refrigerant circuit of the charging station or the refrigerant circuit of the vehicle may be disconnected from the fluid-fluid heat exchanger such that the vehicle may be moved away from the charging station.
In the following description of Figures 2a and 2b the refrigerant cir-cuits are described assuming that the fluid-fluid heat exchanger is on-board the vehicle, as a part of the refrigerant circuit of the vehicle. However, in an em-bodiment the fluid-fluid heat exchanger may be located in the charging station as a part of the refrigerant circuit of the charging station.
The refrigerant circuits of the vehicle and the charging station com-prise fluid lines that contain refrigerant that is moved by a pump 206 or a com-pressor 208 in the fluid lines.
The refrigerant circuit of the vehicle may comprise a battery cooler 204. The battery cooler may be positioned within the battery such that heat
Figures 2a and 2b illustrate refrigerant circuits according to embod-iments. The refrigerant circuits may be the refrigerant circuits of the charging station and the vehicle described in Figure 1. In Figure 2a the refrigerant cir-cuits are connected in series. In Figure 2b, the refrigerant circuits are connect-ed in parallel by a three-way valve 216. The parallel and series connection of the refrigerant circuits provide that the refrigerant circuit of the vehicle and the charging station are both connected to a fluid-fluid heat exchanger 202 such that refrigerant from the circuits may flow to the fluid-fluid heat exchanger.
Preferably, the refrigerant circuits are connected to the fluid-fluid heat ex-changer during charging of the battery 210 of the vehicle such that the refrig-erant from the refrigerant circuit of the charging station may cool down the bat-tery.
It should be appreciated that, when the battery is not charged the refrigerant circuit of the charging station or the refrigerant circuit of the vehicle may be disconnected from the fluid-fluid heat exchanger such that the vehicle may be moved away from the charging station.
In the following description of Figures 2a and 2b the refrigerant cir-cuits are described assuming that the fluid-fluid heat exchanger is on-board the vehicle, as a part of the refrigerant circuit of the vehicle. However, in an em-bodiment the fluid-fluid heat exchanger may be located in the charging station as a part of the refrigerant circuit of the charging station.
The refrigerant circuits of the vehicle and the charging station com-prise fluid lines that contain refrigerant that is moved by a pump 206 or a com-pressor 208 in the fluid lines.
The refrigerant circuit of the vehicle may comprise a battery cooler 204. The battery cooler may be positioned within the battery such that heat
6 may be conducted from the battery to the refrigerant within the fluid lines of the refrigerant circuit. The battery cooler may transfer heat from the battery, when the refrigerant circuit of the vehicle is not connected to the refrigerant circuit of the charging station, for example during driving of the vehicle. The fluid lines 5 may feed the refrigerant inside the battery, where the refrigerant is passed be-tween refrigeration plates inside the battery. The refrigeration plates inside the battery act as a heat sink. Refrigerant heated by the battery is directed to the battery cooler for transferring heat from the refrigerant. The battery cooler may be a heat pump for example.
10 The refrigerant circuit of the charging station may comprise a cool-ing system. Preferably the refrigeration power of the refrigerant circuit of the charging station is greater than the refrigeration power of the vehicle's refriger-ant circuit. The refrigerant circuit may be adapted to reach the cooling power by designing the components of the refrigerant circuit, e.g. the cooling system, 15 fluid lines and the refrigerant to meet desired cooling power that is greater than the cooling power of the vehicle's refrigerant circuit. In one example, the cool-ing system may have a greater cooling power than the battery cooler. The re-frigerants used in the refrigerant circuits may be different or of the same type.
The cooling system may comprise a water supply line of a mine or the cooling 20 system may be a part of a water supply line of a mine. In this way water from the water supply line of the mine may be used to cool down the battery during charging of the battery. After the water has been used to cool down the bat-tery, for example after the water has passed the fluid-fluid heat exchanger, the water may be fed to a sewerage system. Alternatively or additionally the water 25 may be directed after the fluid-fluid heat exchanger to a water system of the vehicle, e.g. a mining machine. In the water system of the mining machine the water may be used for flushing drilling holes and for removing or tying down dust, which may be particularly useful in continuous mining machines. The charging station, vehicle and sewerage system and their refrigerant circuits 30 may be provided with appropriate connections, valves and/or piping for direct-ing water from the fluid-fluid heat exchanger.ln an embodiment, water from a water system of the vehicle, for example the mining machine, may be used to enhance cooling of the battery. The water system may be used in the mining machine for supplying water to one or more mining operations. Examples of 35 the mining operations include drilling, for example. The water system may be used for flushing drilling holes and for removing or tying down dust, for exam-'
10 The refrigerant circuit of the charging station may comprise a cool-ing system. Preferably the refrigeration power of the refrigerant circuit of the charging station is greater than the refrigeration power of the vehicle's refriger-ant circuit. The refrigerant circuit may be adapted to reach the cooling power by designing the components of the refrigerant circuit, e.g. the cooling system, 15 fluid lines and the refrigerant to meet desired cooling power that is greater than the cooling power of the vehicle's refrigerant circuit. In one example, the cool-ing system may have a greater cooling power than the battery cooler. The re-frigerants used in the refrigerant circuits may be different or of the same type.
The cooling system may comprise a water supply line of a mine or the cooling 20 system may be a part of a water supply line of a mine. In this way water from the water supply line of the mine may be used to cool down the battery during charging of the battery. After the water has been used to cool down the bat-tery, for example after the water has passed the fluid-fluid heat exchanger, the water may be fed to a sewerage system. Alternatively or additionally the water 25 may be directed after the fluid-fluid heat exchanger to a water system of the vehicle, e.g. a mining machine. In the water system of the mining machine the water may be used for flushing drilling holes and for removing or tying down dust, which may be particularly useful in continuous mining machines. The charging station, vehicle and sewerage system and their refrigerant circuits 30 may be provided with appropriate connections, valves and/or piping for direct-ing water from the fluid-fluid heat exchanger.ln an embodiment, water from a water system of the vehicle, for example the mining machine, may be used to enhance cooling of the battery. The water system may be used in the mining machine for supplying water to one or more mining operations. Examples of 35 the mining operations include drilling, for example. The water system may be used for flushing drilling holes and for removing or tying down dust, for exam-'
7 pie. The water from the water system of the mining machine may be fed to the refrigerant circuit of the mining machine for cooling down the battery continu-ously or at times, when the battery is operated at a high power. The battery may be operated at a high power, when the battery supplies a substantial part of the power, for example a drilling power, needed by the mining machine, or the battery is used for buffering input power of the mining machine.
In an embodiment, flow of the refrigerant in the cooling system of re-frigerant circuit of the charging station may be controlled. The cooling system may comprise for example an evaporator 212 and optionally a condenser (not shown). The evaporator may cool down refrigerant from the fluid lines by air moving through the evaporator. The condenser may receive refrigerant in gas phase from the fluid lines. In the condenser, the refrigerant may be cooled down and converted to liquid phase. From the condenser the refrigerant may be fed back to the fluid lines.
The refrigerant may be controlled to flow through the evaporator, when the refrigerant circuits of the vehicle and the charging station are not connected, and the refrigerant may be controlled to flow through the fluid-fluid heat exchanger, when the refrigerant circuits are connected via the fluid-fluid heat exchanger.
The fluid-fluid heat exchanger may be connected the fluid lines be-hind a valve 203 such that flow of the refrigerant through the fluid-fluid heat exchanger may be controlled, for example switched on or off. The evaporator may be connected to the fluid lines behind a valve 213 such that flow of the refrigerant through the evaporator may be controlled, for example switched on or off. The valves may be located in upstream direction from the fluid-fluid heat exchanger and/or the evaporator. The upstream direction may refer to a direc-tion against the flow of the refrigerant.
In one example, flow of the refrigerant may be controlled such that the flow of the refrigerant through the fluid-fluid heat exchanger 202 may be switched off, when the refrigerant circuits of the vehicle and the charging sta-tion are not connected. The refrigerant circuits are not connected, for example, when the vehicle is not positioned at the charging station for charging the bat-tery. When the battery is not charged, the vehicle may be moving as powered by the stored energy discharging from the battery. Accordingly, when the re-frigerant circuits are not connected, the refrigerant circuit of the charging sta-tion may circulate the refrigerant via the evaporator 212 and the condenser to I
In an embodiment, flow of the refrigerant in the cooling system of re-frigerant circuit of the charging station may be controlled. The cooling system may comprise for example an evaporator 212 and optionally a condenser (not shown). The evaporator may cool down refrigerant from the fluid lines by air moving through the evaporator. The condenser may receive refrigerant in gas phase from the fluid lines. In the condenser, the refrigerant may be cooled down and converted to liquid phase. From the condenser the refrigerant may be fed back to the fluid lines.
The refrigerant may be controlled to flow through the evaporator, when the refrigerant circuits of the vehicle and the charging station are not connected, and the refrigerant may be controlled to flow through the fluid-fluid heat exchanger, when the refrigerant circuits are connected via the fluid-fluid heat exchanger.
The fluid-fluid heat exchanger may be connected the fluid lines be-hind a valve 203 such that flow of the refrigerant through the fluid-fluid heat exchanger may be controlled, for example switched on or off. The evaporator may be connected to the fluid lines behind a valve 213 such that flow of the refrigerant through the evaporator may be controlled, for example switched on or off. The valves may be located in upstream direction from the fluid-fluid heat exchanger and/or the evaporator. The upstream direction may refer to a direc-tion against the flow of the refrigerant.
In one example, flow of the refrigerant may be controlled such that the flow of the refrigerant through the fluid-fluid heat exchanger 202 may be switched off, when the refrigerant circuits of the vehicle and the charging sta-tion are not connected. The refrigerant circuits are not connected, for example, when the vehicle is not positioned at the charging station for charging the bat-tery. When the battery is not charged, the vehicle may be moving as powered by the stored energy discharging from the battery. Accordingly, when the re-frigerant circuits are not connected, the refrigerant circuit of the charging sta-tion may circulate the refrigerant via the evaporator 212 and the condenser to I
8 cool down the refrigerant. In this way the refrigerant may be cooled down be-tween charging operations of batteries, which may be charging operations of the same battery or charging operations of different batteries. Accordingly, when the flow of the refrigerant through the fluid-fluid heat exchanger is switched off, the flow of the refrigerant through the evaporator may be switched on.
In one example, flow of the refrigerant may be controlled such that the flow of the refrigerant through the evaporator 212 may be switched off, when the vehicle is positioned at the charging station for charging the battery and the refrigerant circuits of the vehicle and the charging station are connect-ed. When the refrigerant circuits are connected the refrigerant circuit of the charging station may circulate the refrigerant via the fluid-fluid heat exchanger 202 and the condenser to cool down the refrigerant. Accordingly, when the flow of the refrigerant through the evaporator is switched off, the flow of the refrigerant through the fluid-fluid heat exchanger may be switched on.
In an embodiment, flow of the refrigerant in the cooling system of vehicle may be controlled. The refrigerant of the refrigerant circuit of the vehi-cle may be directed via the fluid-fluid heat exchanger, when the refrigerant cir-cuit of the vehicle and the refrigerant circuit of the charging station are con-nected, for example during charging of the battery. On the other hand, when the refrigerant circuits are not connected the refrigerant of the refrigerant circuit of the vehicle may be directed to the battery cooler. The controlling may be provided by the three-way valve 216.
In an embodiment, refrigerant of the refrigerant circuit of the vehicle may be directed via the fluid-fluid heat exchanger from different portions of the refrigerant circuit of the vehicle. One of the portions may comprise the battery 210 and the other portion may comprise the battery cooler 204. The three-way valve may be used to direct the flow of refrigerant from the battery or battery cooler to the fluid-fluid heat exchanger. The refrigerant circuits of the vehicle and the charging station are connected, e.g. during the battery is charged, in order to cool down the refrigerant flowing through the fluid-fluid heat exchang-er.
In an embodiment, during charging of the battery refrigerant from the refrigerant circuit comprising the battery may be directed via the fluid-fluid heat exchanger and after the battery is charged, refrigerant from the portion of the refrigerant circuit comprising the battery cooler may be directed via the flu-!
In one example, flow of the refrigerant may be controlled such that the flow of the refrigerant through the evaporator 212 may be switched off, when the vehicle is positioned at the charging station for charging the battery and the refrigerant circuits of the vehicle and the charging station are connect-ed. When the refrigerant circuits are connected the refrigerant circuit of the charging station may circulate the refrigerant via the fluid-fluid heat exchanger 202 and the condenser to cool down the refrigerant. Accordingly, when the flow of the refrigerant through the evaporator is switched off, the flow of the refrigerant through the fluid-fluid heat exchanger may be switched on.
In an embodiment, flow of the refrigerant in the cooling system of vehicle may be controlled. The refrigerant of the refrigerant circuit of the vehi-cle may be directed via the fluid-fluid heat exchanger, when the refrigerant cir-cuit of the vehicle and the refrigerant circuit of the charging station are con-nected, for example during charging of the battery. On the other hand, when the refrigerant circuits are not connected the refrigerant of the refrigerant circuit of the vehicle may be directed to the battery cooler. The controlling may be provided by the three-way valve 216.
In an embodiment, refrigerant of the refrigerant circuit of the vehicle may be directed via the fluid-fluid heat exchanger from different portions of the refrigerant circuit of the vehicle. One of the portions may comprise the battery 210 and the other portion may comprise the battery cooler 204. The three-way valve may be used to direct the flow of refrigerant from the battery or battery cooler to the fluid-fluid heat exchanger. The refrigerant circuits of the vehicle and the charging station are connected, e.g. during the battery is charged, in order to cool down the refrigerant flowing through the fluid-fluid heat exchang-er.
In an embodiment, during charging of the battery refrigerant from the refrigerant circuit comprising the battery may be directed via the fluid-fluid heat exchanger and after the battery is charged, refrigerant from the portion of the refrigerant circuit comprising the battery cooler may be directed via the flu-!
9 id-fluid heat exchanger. In this way the battery cooler may be cooled down be-fore the refrigerant circuits are disconnected and the vehicle is moved away from the charging station to perform its tasks.
An embodiment comprises an apparatus, for example a mining ma-chine or a charging station, comprising at least one processor, memory and a computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus perform one or more functions or steps of an embodiment.
One or more functions described in the embodiments above and re-113 lated to for example control of refrigerant in one or more refrigerant circuits may be implemented by control valves, e.g. two or three-way valves, that are electronically or manually controlled. One or more valves may be controlled by a common controller or the valves may be controlled by separate controllers. A
controller may refer to a processor. The processor may be connected to a memory and a communications part electrically. The memory may store com-puter program code that when executed by the processor causes performing one or more functions or steps of an embodiment.
The communications part may be a an electrical interface, connect-or or a communications module that is capable of obtaining electrical signals, commands and/or messages from the processor to one or more control valves.
The communications may comprise digital or analogue communications. The communications may be wired or wireless communications. The communica-tions may be implemented by various communications protocols and technolo-gies, for example Ethernet, IEEETM 802.11 based Wireless Local Area Net-work, Internet Protocol, Hart and ProfibusTM. One or more sensors may be connected to the communications part such that data from the sensors may be used to in controlling the valves.
Embodiments as described may also be carried out in the form of a computer process defined by a computer program. The computer program may be in source code form, object code form, or in some intermediate form, and it may be stored in some sort of carrier, which may be any entity or device capable of carrying the program. For example, the computer program may be stored on a computer program distribution medium readable by a computer or a processor. The computer program medium may be, for example but not lim-ited to, a record medium, computer memory, read-only memory, electrical car-rier signal, telecommunications signal, and software distribution package, for example.
The processor may be a computer processor, application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), and/or any other hardware component that has been programmed in such a way to carry 5 out one or more functions of an embodiment.
The memory may include volatile and/or non- volatile memory and typically stores content, data, or the like. For example, the memory may store computer program code such as software applications or operating systems, information, data, content, or the like for the processor to perform steps asso-
An embodiment comprises an apparatus, for example a mining ma-chine or a charging station, comprising at least one processor, memory and a computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus perform one or more functions or steps of an embodiment.
One or more functions described in the embodiments above and re-113 lated to for example control of refrigerant in one or more refrigerant circuits may be implemented by control valves, e.g. two or three-way valves, that are electronically or manually controlled. One or more valves may be controlled by a common controller or the valves may be controlled by separate controllers. A
controller may refer to a processor. The processor may be connected to a memory and a communications part electrically. The memory may store com-puter program code that when executed by the processor causes performing one or more functions or steps of an embodiment.
The communications part may be a an electrical interface, connect-or or a communications module that is capable of obtaining electrical signals, commands and/or messages from the processor to one or more control valves.
The communications may comprise digital or analogue communications. The communications may be wired or wireless communications. The communica-tions may be implemented by various communications protocols and technolo-gies, for example Ethernet, IEEETM 802.11 based Wireless Local Area Net-work, Internet Protocol, Hart and ProfibusTM. One or more sensors may be connected to the communications part such that data from the sensors may be used to in controlling the valves.
Embodiments as described may also be carried out in the form of a computer process defined by a computer program. The computer program may be in source code form, object code form, or in some intermediate form, and it may be stored in some sort of carrier, which may be any entity or device capable of carrying the program. For example, the computer program may be stored on a computer program distribution medium readable by a computer or a processor. The computer program medium may be, for example but not lim-ited to, a record medium, computer memory, read-only memory, electrical car-rier signal, telecommunications signal, and software distribution package, for example.
The processor may be a computer processor, application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), and/or any other hardware component that has been programmed in such a way to carry 5 out one or more functions of an embodiment.
The memory may include volatile and/or non- volatile memory and typically stores content, data, or the like. For example, the memory may store computer program code such as software applications or operating systems, information, data, content, or the like for the processor to perform steps asso-
10 ciated with operation of the apparatus in accordance with embodiments.
In the illustrated embodiment, the memory may be, for example, random access memory (RAM), a hard drive, or other fixed data memory or storage device.
Further, the memory, or part of it, may be removable memory detachably con-nected to the control unit.
It will be obvious to a person skilled in the art that, as the technology advances, the inventive concept can be implemented in various ways. The in-vention and its embodiments are not limited to the examples described above but may vary within the scope of the claims. One advantage of the invention is that the heat caused when charging the battery can be feeded out of the mine via the water supply lines in the mine.
In the illustrated embodiment, the memory may be, for example, random access memory (RAM), a hard drive, or other fixed data memory or storage device.
Further, the memory, or part of it, may be removable memory detachably con-nected to the control unit.
It will be obvious to a person skilled in the art that, as the technology advances, the inventive concept can be implemented in various ways. The in-vention and its embodiments are not limited to the examples described above but may vary within the scope of the claims. One advantage of the invention is that the heat caused when charging the battery can be feeded out of the mine via the water supply lines in the mine.
Claims (12)
1 A mining machine comprising.
a battery for storing electrical energy;
a refrigerant circuit for circulating a refrigerant via the battery;
a connection for connecting the refrigerant circuit to a refrigerant cir-cuit of a charging station via a fluid-fluid heat exchanger;
a water system for mining operations;
and that the water from the water system for mining operations is fed to the refrigerant circuit of the mining machine for cooling down the battery.
a battery for storing electrical energy;
a refrigerant circuit for circulating a refrigerant via the battery;
a connection for connecting the refrigerant circuit to a refrigerant cir-cuit of a charging station via a fluid-fluid heat exchanger;
a water system for mining operations;
and that the water from the water system for mining operations is fed to the refrigerant circuit of the mining machine for cooling down the battery.
2 The mining machine according to claim 1, wherein the mining ma-chine comprises the fluid-fluid heat exchanger and the fluid-fluid heat exchanger is connectable to the refrigerant circuit of the charging station for transferring heat between the refrigerant circuit of the mining machine and the refrigerant circuit of the charging station, when the refrigerant circuits are connected via the fluid-fluid heat exchanger
3 The mining machine according to either one of claims 1 or 2, wherein during charging of the battery, the refrigerant of the refrigerant circuit of the mining machine is directed via the fluid-fluid heat exchanger for transferring heat from the battery to the refrigerant circuit of the charging station connected to the fluid-fluid heat exchanger.
4 The mining machine according to any one of claims 1, 2 or 3, wherein the battery is cooled by a battery cooler of the refrigerant circuit of the mining machine, when power stored to the battery is consumed by the mining machine.
5. The mining machine according to any one of claims 1, 2, 3 or 4, wherein the refrigerant of the refrigerant circuit of the mining machine is directed via the fluid-fluid heat exchanger from at least one portion of the refrigerant cir-cuit of the mining machine, wherein a first portion of the refrigerant circuit of the mining machine comprises the battery and a second portion of the refrigerant circuit of the mining machine comprises the battery cooler, when the refrigerant circuit of the charging station is connected to the fluid-fluid heat exchanger.
6. The mining machine according to claim 5, wherein during charging of the battery refrigerant from the first portion of the refrigerant circuit of the min-ing machine is directed via the fluid-fluid heat exchanger and after the battery is charged, refrigerant from the second portion of the refrigerant circuit of the min-ing machine is directed via the fluid-fluid heat exchanger.
7. The mining machine according to any one of claims 1, 2, 3, 4, 5 or 6, wherein water from the water system for mining operations is fed to the refrig-erant circuit of the mining machine for cooling down the battery continuously or at times, when the battery is operated at a high power such that a substantial part of the power, for example a drilling power, needed by the mining machine, is supplied by the battery, or the battery is used for buffering input power of the mining machine.
8. The mining machine according to any one of claims 1, 2, 3, 4, 5, 6 or 7, wherein the battery is a lithium-ion battery.
9. A charging station comprising:
an electrical outlet for charging a battery with electrical energy;
a refrigerant circuit;
a connection for connecting the refrigerant circuit via a fluid-fluid heat exchanger to another refrigerant circuit connected to the battery of a mining ma-chine; and that the refrigerant circuit of the charging station is connected to or is a part of a water supply line in a mine.
an electrical outlet for charging a battery with electrical energy;
a refrigerant circuit;
a connection for connecting the refrigerant circuit via a fluid-fluid heat exchanger to another refrigerant circuit connected to the battery of a mining ma-chine; and that the refrigerant circuit of the charging station is connected to or is a part of a water supply line in a mine.
10. The charging station according to claim 9, wherein the fluid-fluid heat exchanger is located in the charging station or in the mining machine ac-cording to any one of claims 1 to 8.
11. The charging station according to either one of claims 9 or 10, wherein during charging of the battery via the electrical outlet, refrigerant from the refrigerant circuit of the charging station is circulated via the fluid-fluid heat exchanger for transferring heat between the refrigerant circuit connected to the battery of the mining machine and the refrigerant circuit of the charging station, when the refrigerant circuits are connected via the fluid-fluid heat exchanger.
12. The charging station according to any one of claims 9, 10 or 11, wherein the refrigerant circuit of the charging station comprises an evaporator, wherein the refrigerant in the refrigerant circuit of the charging station is con-trolled to flow through the evaporator, when the refrigerant circuits are not con-nected via the fluid-fluid heat exchanger, and the refrigerant in the refrigerant circuit of the charging station is controlled to flow through the fluid-fluid heat exchanger, when the refrigerant circuits are connected via the fluid-fluid heat exchanger.
Applications Claiming Priority (2)
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|---|---|---|---|
| EP14192036.3A EP3017990B1 (en) | 2014-11-06 | 2014-11-06 | Mining machine and charging station comprising refrigeration circuits |
| EP14192036.3 | 2014-11-06 |
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| CA2902691A1 CA2902691A1 (en) | 2016-05-06 |
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2014
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| US20160134001A1 (en) | 2016-05-12 |
| EP3017990A1 (en) | 2016-05-11 |
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| ZA201508183B (en) | 2021-09-29 |
| FI3017990T3 (en) | 2023-07-28 |
| CA2902691A1 (en) | 2016-05-06 |
| EP3017990B1 (en) | 2023-05-03 |
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