SE540236C2 - Method and system for clearing a charging adapter for charging a plug-in electrical vehicle - Google Patents

Method and system for clearing a charging adapter for charging a plug-in electrical vehicle

Info

Publication number
SE540236C2
SE540236C2 SE1651179A SE1651179A SE540236C2 SE 540236 C2 SE540236 C2 SE 540236C2 SE 1651179 A SE1651179 A SE 1651179A SE 1651179 A SE1651179 A SE 1651179A SE 540236 C2 SE540236 C2 SE 540236C2
Authority
SE
Sweden
Prior art keywords
vehicle
charging
air
adapter
blowing
Prior art date
Application number
SE1651179A
Other languages
Swedish (sv)
Other versions
SE1651179A1 (en
Inventor
Claesson André
Sjödin Robert
Original Assignee
Scania Cv Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scania Cv Ab filed Critical Scania Cv Ab
Priority to SE1651179A priority Critical patent/SE540236C2/en
Priority to DE102017007981.1A priority patent/DE102017007981B4/en
Publication of SE1651179A1 publication Critical patent/SE1651179A1/en
Publication of SE540236C2 publication Critical patent/SE540236C2/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/002—Maintenance of line connectors, e.g. cleaning
    • 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
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/052—Pneumatic spring characteristics
    • 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
    • B60L53/14—Conductive energy transfer
    • B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
    • 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
    • B60L53/14—Conductive energy transfer
    • B60L53/18—Cables specially adapted for charging electric vehicles
    • 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
    • B60L53/35—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
    • B60L53/36—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles by positioning the vehicle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/64—Means for preventing incorrect coupling
    • H02J7/0027—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/20—Spring action or springs
    • B60G2500/201—Air spring system type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/20—Stationary vehicle
    • B60G2800/202—Stationary vehicle kneeling, e.g. for letting passengers on/off
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/62—Other vehicle fittings for cleaning
    • 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)
  • Transportation (AREA)
  • Manufacturing & Machinery (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The present disclosure relates to a method (300) for clearing a charging adapter (290, 291) for charging a plug-in electrical vehicle (100). The method comprises the step (330) of blowing compressed air on said charging adapter (290, 291), wherein said compressed air originates from at least one air bellows of the vehicle (100). The present disclosure also relates to a system for clearing a charging adapter (290, 291), to a vehicle (100), to a computer program and to a computer program product.

Description

Method and system for clearing a charging adapter for charging a plug-in electrical vehicle TECHNICAL FIELD The present disclosure relates to a method and a system for clearing a charging adapter for charging a plug-in electrical vehicle. The present disclosure further relates to a vehicle, a computer program and a computer program product.
BACKGROUND ART Adapters for charging plug-in electrical vehicles can be exhibited to ice, snow, salt, or other substances during winter time. Even gravel, leaves, mud, sand, stones, or any other particles or substances might cover the adapter at any time of the year. This can happen especially for adapters placed under the vehicle or adapters placed on a road surface. Such a coverage or an exhibition might prevent the vehicle from being able to connect to a charging station.
There exist some methods for clearing a charging adapter. In one example a brush is used under the vehicle for clearing the adapter. This has the disadvantage that there might be a risk that the brush can hook at some parts of the charging adapter. Further, the brush needs mechanical moves and it is very difficult or even impossible to clean adapters of the pin-hole type since the bristles of the brush cannot enter the hole(s) of the adapter.
Another solution is using compressed air to clear the charging adapter. This is usually done by installing an extra air pressure system, sometimes in combination with a fan, to clear the charging adapter. Such a system adds weight to the vehicle or the charging station and uses space. Further, such a system is energy consuming.
GB2510125A discloses an electric vehicle comprising an induction coil for charging the vehicle via a charging station in the ground. Air is used to remove objects which have been detected under the vehicle.
US20130025989 describes an electric vehicle which is charged via charging units in the ground. Compressed air is used for blowing away dust and sand on the charging area.
EP2765023 describes an electric vehicle which is charged via a charging interface in the ground. The vehicle comprises air blowing units for blowing out air under the vehicle where it should be charged.
US20120200151 discloses a hybrid vehicle where air is blown out under the vehicle when charging from the ground. The air is used to remove unwanted objects.
US5984706 discloses a charging adapter for electric vehicles. Inside the adapter there is a unit for blowing out air. The air is intended for blowing away dust and similar particles.
JP2012222956 discloses a hybrid vehicle with a charging interface placed under the vehicle. There is a fan close to the charging interface which blows air between the charging adapter of the vehicle and the adapter at the ground.
Consequently, there is a need for an improved method and an improved system for clearing charging adapters.
SUMMARY OF THE INVENTION It is an objective of the present invention to provide a method and a system for clearing a charging adapter for charging a plug-in electrical vehicle, as well as a vehicle, a computer program and a computer program product, which demands less weight.
It is an objective of the present invention to provide a method and a system for clearing a charging adapter for charging a plug-in electrical vehicle, as well as a vehicle, a computer program and a computer program product, which demands less space.
It is an objective of the present invention to provide a method and a system for clearing a charging adapter for charging a plug-in electrical vehicle, as well as a vehicle, a computer program and a computer program product, which demands less energy consumption.
It is an objective of the present invention to provide a method and a system for clearing a charging adapter for charging a plug-in electrical vehicle, as well as a vehicle, a computer program and a computer program product, which dispenses with extra mechanically moving parts.
It is an objective of the present invention to provide a method and a system for clearing a charging adapter for charging a plug-in electrical vehicle, as well as a vehicle, a computer program and a computer program product, which is able to clear adapters of the pin-hole type.
It is an objective of the present invention to provide an alternative method and an alternative system for clearing a charging adapter for charging a plug-in electrical vehicle, as well as an alternative vehicle, an alternative computer program and an alternative computer program product.
At least a part of the objectives are achieved by a method for clearing a charging adapter for charging a plug-in electrical vehicle. The method comprises the step of blowing compressed air on said charging adapter, wherein said compressed air originates from at least one air bellows of the vehicle.
This has the advantage that basically no extra weight for a clearing system has to be used. Further, no extra mechanically moving parts are needed. Also, such a solution is suitable for basically every kind of adapter so that even adapters of the pin-hole type can be cleared.
In one example the method further comprises the step of lowering the distance between a chassis of the vehicle and at least one axle of the vehicle by evacuating air from at least one air bellows of the vehicle. Said evacuated air is then used for said blowing. This demands less or no extra energy for the clearing function since the clearing can be performed when the vehicle is lowered for any reason.
In one example the method further comprises the step of positioning the vehicle at a predetermined position in relation to a charging station. This facilitates clearing an adapter at a charging station.
In one example the method further comprises the step of physically connecting the vehicle to a charging station via using a kneeling function and/or via changing the distance between the vehicle body and/or the chassis and the ground at at least one axle of the vehicle. This can bring means for blowing close to an adapter at the charging station. Thus no or rarely any protruding extra elements are needed at the vehicle for providing the blowing function of an adapter at the charging station.
In one example the method further comprises the step of charging the vehicle.
In one example the method further comprises the step of heating said compressed air before it reaches said charging adapter. This is especially useful for removing ice or snow from the charging adapter.
At least a part of the objectives are achieved by a system for clearing a charging adapter for charging a plug-in electrical vehicle. The system comprises means for blowing. The means for blowing are arranged to blow compressed air on the charging adapter. The compressed air originates from at least one air bellows of the vehicle.
In one embodiment the system further comprises at least one air bellows. The at least one air bellows is arranged for lowering the distance between a chassis of the vehicle and at least one axle of the vehicle by evacuating air from said at least one air bellows. The system is arranged to guide the air to the means for blowing so that the means for blowing use the evacuated air for the blowing.
In one embodiment the system further comprises means for positioning the vehicle at a predetermined position in relation to a charging station.
In one embodiment the system further comprises means for physically connecting the vehicle to a charging station via using a kneeling function and/or via changing the distance between the vehicle body and/or the chassis and the ground at at least one axle of the vehicle.
In one embodiment the system further comprises means for charging the vehicle.
In one embodiment the system further comprises means for heating said compressed air before it reaches said charging adapter.
At least a part of the objectives are achieved by a plug-in electrical vehicle, comprising the system according to the present disclosure.
In one embodiment the vehicle is a plug-in hybrid electric vehicle or a battery electrical vehicle.
At least a part of the objectives are achieved by a computer program for clearing a charging adapter for charging a plug-in electrical vehicle, wherein said computer program comprises program code for causing an electronic control unit or a computer connected to the electronic control unit to perform the steps of the method according to the present disclosure.
At least a part of the objectives are also achieved by a computer program product containing a program code stored on a computer-readable medium for performing the method according to the present disclosure, when said computer program is run on an electronic control unit or a computer connected to the electronic control unit.
The system, the vehicle, the computer program and the computer program product have corresponding advantages as have been described in connection with the corresponding examples of the method according to this disclosure.
Further advantages of the present invention are described in the following detailed description and/or will arise to a person skilled in the art when performing the invention.
BRIEF DESCRIPTION OF THE DRAWINGS For a more detailed understanding of the present invention and its objects and advantages, reference is made to the following detailed description which should be read together with the accompanying drawings. Same reference numbers refer to same components in the different figures. In the following, Fig. 1 shows, in a schematic way, a vehicle according to one embodiment of the present invention; Fig. 2 shows, in a schematic way, a system which can be used in a vehicle according to one embodiment of the present invention; Fig. 3a-c show, in a schematic way, examples of how a system according to the present invention can be arranged in a vehicle; Fig. 4 shows, in a schematic way, a flow chart over an example of a method according to the present invention; and Fig. 5 shows, in a schematic way, a device which can be used in connexion with the present invention.
DETAILED DESCRIPTION Fig. 1 shows a side view of a vehicle 100. In the shown example, the vehicle 100 is a bus. In one example the vehicle 100 is a heavy vehicle such as a truck. The vehicle 100 can be any other kind of vehicle such as a passenger car, for example a so-called sport utility vehicle, SUV, a terrain vehicle, a sports car, or any other kind of passenger car. The vehicle 100 comprises a system 299, se Fig. 2.
The vehicle is a plug-in electrical vehicle, such as a plug-in hybrid electric vehicle, PHEV, or a battery electrical vehicle, BEV. In the following only the expression vehicle will be used, but it should be understood that this expression in this disclosure relates to a plug-in electrical vehicle. It should also be understood that the term "plug-in" in connexion to the present disclosure should be treated in a narrow sense. Thus, the term relates to actually physically connecting the vehicle with a charging station when charging the vehicle. Thus, inductive charging without physically connecting the vehicle to the charging station should not be treated as a plug-in vehicle in relation to this disclosure.
The vehicle 100 comprises a vehicle body 110. The vehicle further comprises at least two axles and wheels attached to them. The vehicle 100 can stand or travel on a ground 120, such as a road, a parking place, a garage ground, or the like.
The vehicle 100 in Fig. 1 is depicted with two axles. However, a vehicle according to the present disclosure can have any larger number of axles as well. In the following, the principle will explained in relation to a two-axle vehicle, but the idea of the present disclosure can easily be adapted to any larger number of axles.
Here, and in the whole document, the term "axle" refers to the line connecting a transverse pair of wheels. Thus, the term "axle" relates to a transverse axis of the vehicle. As a consequence, the term "axle" does not necessarily require a physical axle between a pair of wheels.
The term "link" refers herein to a communication link which may be a physical connection such as an opto-electronic communication line, or a non-physical connection such as a wireless connection, e.g. a radio link or microwave link.
Fig. 2 shows, in a schematic way, a system 299 which can be used in connexion with a vehicle according to one embodiment of the present invention.
The system 299 comprises four wheels 210a, 210b, 210c, 210d. A first wheel 210a and a third wheel 210c are arranged on a first side of the vehicle. A second wheel 210b and a fourth wheel 210d are arranged at a second side of the vehicle. The second side is opposed the first side. The first wheel 210a and the second wheel are connected by a first axle 215a. The third wheel 210c and the fourth wheel 210d are connected by a second axle 215b.
In principle, the first and/or the second axle 215a, 215b can have more than two wheels. In one embodiment more than two axles are arranged at the vehicle. In one embodiment, at least one of the first or the second axle 215a, 215b is a physical axle. In one example, at least one of the first or the second axle 215a, 215b, is no physical axle but only an axis. Especially when using independent wheel suspension for a vehicle a physical axle might be dispensed.
The system 299 comprises four suspension systems 240a, 240b, 240c, 240d. A first and a second suspension system 240a, 240b are arranged at the first axle 215a. A third and a fourth suspension system 240c, 240d are arranged at the second axle 215b. Each of the four suspension systems 240a, 240b, 240c, 240d is arranged to allow changing the distance between the vehicle body and/or the chassis of the vehicle and the ground. This changing will at first hand change the distance between the vehicle body and/or the chassis and the ground at the place of the axle where the corresponding suspension system is arranged. However, since the vehicle body in general is a rigid body, such a changing will usually also affect the distance between the vehicle body and the ground at at least some other place of the vehicle body. In the following it will only be referred to the vehicle body. It should, however, be understood that everything said regarding the vehicle body equally well will apply to the chassis of the vehicle.
In one embodiment said four suspension systems 240a, 240b, 240c, 240d are air suspension systems. Each of said four suspension systems 240a, 240b, 240c, 240d can in one embodiment comprise at least one air bellows. In one embodiment said four suspension systems 240a, 240b, 240c, 240d are suspension systems which can lift the vehicle body in relation to the ground based on a control of the corresponding suspension systems 240a, 240b, 240c, 240d. Said control can be an active control. When referring to lifting here it should be understood that the suspension systems equally can lower the vehicle body. Preferably, said lowering and/or lifting is provided by operating said at least one air bellows. In one example, compressed air is pumped into at least one air bellows to lift the vehicle. In one example compressed air is evacuated from at least one air bellows to lower the vehicle. Said lowering and/or lifting can is in one example performed at only one wheel of the vehicle. Said lowering and/or lifting can is in one example performed at one axle of the vehicle. Said lowering and/or lifting can is in one example performed at only one side of the vehicle. Said lowering and/or lifting can is in one example performed to the whole vehicle body.
Any of the four suspension systems 240a, 240b, 240c, 240d can be arranged to provide a kneeling function for the vehicle. Such suspension systems are also well known in the art and thus not described here any further. It should be noted that the system 299 can comprise any higher or lower number of suspension systems for providing a kneeling function and/or for allowing changing the distance between the vehicle body and the ground at at least one axle of the vehicle. It should also be noted that not all suspension systems 240a, 240b, 240c, 240d necessarily have to comprise at least one air bellows. The minimum requirement of the present invention is only one air bellows present at only one suspension system.
The system 299 further comprises a first control unit 200. Said first control unit 200 is arranged to control operation of each of said four suspension systems 240a, 240b, 240c, 240d. Said first control unit 200 is arranged for communication with each of said four suspension systems 240a, 240b, 240c, 240d via a corresponding link L240a, L240b, L240c, L240d. Said first control unit 200 is arranged to receive information from each of said four suspension systems 240a, 240b, 240c, 240d. In one example, said first control unit 200 is arranged to control only a subset of said four suspension systems 240a, 240b, 240c, 240d, such as only one, two, or three out of said four suspension systems 240a, 240b, 240c, 240d. Whenever referring to a suspension system or to four suspension systems in this disclosure it should be noted that number of suspension systems within the scope of this disclosure easily can be adapted to any number of suspension systems suitable for a vehicle.
The system 299 comprises vehicle positioning means 220. Said vehicle positioning means 220 are arranged to support positioning of the vehicle, especially in relation to a charging station. In one example said means 220 support autonomous positioning of the vehicle. In one example said means provide autonomous positioning of the vehicle. In one example said means 220 comprise a GPS-receiver, or a receiver of any other global navigation satellite system, GNSS. In one example said means 220 comprises at least one laser system. In one example said means 220 comprises at least one radar system. In one example said means 220 comprise a camera system. In one example said means 220 comprises at least one road sensor system. As an example, the means 220 can be arranged to roughly position the vehicle with the help of a GPS system and then to exactly position the vehicle with the help of laser, radar, camera, and/or road sensor, especially in relation to a charging station. It is known in the art how to construct systems for exactly positioning a vehicle. The means 220 can be arranged to support positioning of the vehicle operated by the driver. The means 220 can be arranged to provide a positioning of the vehicle in a completely autonomous way.
Said first control unit 200 is arranged to control operation of said means 220. Said first control unit 200 is arranged for communication with said means 220 via a link L220. Said first control unit 200 is arranged to receive information from said means 220. The above described functionality of the means 220 can be provided by the means 220 alone or in combination with the first control unit 200. In one example the first control unit 200 operates an engine of the vehicle (not shown) for providing an autonomous positioning of the vehicle in relation to a charging station.
The system 299 comprises a battery 280. Said battery 280 is chargeable. Said battery 280 can be arranged to provide power to any of the functions and/or elements of the vehicle. In one example the battery 280 is arranged to provide power to an engine of the vehicle (not shown). Said first control unit 200 is arranged to control operation of said battery 280. Said first control unit 200 is arranged for communication with said battery 280 via a link L280. Said first control unit 200 is arranged to receive information from said battery 280, for example information regarding a charging state and/or a charging level of the battery 280.
The system 299 comprises a charging adapter 290. Said charging adapter 290 is arranged to provide a charging functionality of the vehicle. Said charging adapter 290 is arranged to be physically connected to a corresponding adapter 291 of a charging station. In one example, said charging adapter 290 has four contact pins. In one example, two of the contact pins are arranged to transmit current from the charging station through the adapter 290 to the battery 280 of the vehicle. In one example, one contact pin is arranged for grounding the charging arrangement. In one example, one contact pin is arranged for communication between the charging station and the vehicle. However, the communication can also be provided wireless, in which case one contact pin can be dispensed with. The charging adapter 290 can have any other shape than pins as well. In one example the charging adapter 290 comprises at least one hole. In one example the charging adapter comprises at least one contact area. Said at least one contact area can be arranged to be connected to a corresponding charging adapter at a charging station when charging the vehicle.
The system 299 comprises a communication arrangement 295. Said communication arrangement 295 is arranged to communicate with the charging station. Thus the communication arrangement 295 can provide a communication between the vehicle and the charging station. Said first control unit 200 is arranged to control operation of said communication arrangement 295. Said first control unit 200 is arranged for communication with said communication arrangement 295 via a link L295. Said first control unit 200 is arranged to receive information from said communication arrangement 295.
Said communication between the vehicle and the charging station can comprise communication regarding when a charging of the vehicle should start. Said communication between the vehicle and the charging station can comprise communication regarding when a charging of the vehicle should stop. In one example, a charging is started when a physical connection between the vehicle and the charging station is detected. In one example, a charging is started when the battery 280 is below a certain charging level.
Said first control unit 200 can be arranged to stop or finish charging once a certain charging level of the battery 280 has been reached and/or once a certain charging time has passed. Said first control unit 200 can be arranged to receive input from an operator of the vehicle through a human machine interface, HMI. Said input from the operator can relate to a command from the operator that the charging should be stopped.
The system 299 comprises means 250 for blowing. Said means 250 are arranged to blow compressed air on a charging adapter. Said charging adapter is in one example said charging adapter 290 of the vehicle. Said charging adapter is in one example said corresponding adapter 291 of the charging station. Said compressed air originates from at least one air bellows of the vehicle. In the shown example the compressed air originates from the air bellows of the fourth suspension system 240d. Said means 250 can comprise an air transport arrangement. Said air transport arrangement can be flexible or rigid. Said air transport arrangement can comprise at least one pipe element and/or at least one tube element and/or at least one hose element and/or at least one duct and/or at least one valve. In one example said air transport arrangement is arranged to transport compressed air originating from at least one air bellows of the vehicle. In one example said air transport arrangement is directly connected to at least one air bellows of the vehicle. In one example said means 250 comprise at least one valve. In one example said means comprise at least one nozzle. In one example said means 250 are oriented in such a way that the compressed air is blown on the charging adapter 290. In one example the system 299 is arranged to guide compressed air to the means 250 for blowing so that said means for blowing use evacuated air from at least one air bellows for said blowing.
In one example the first control unit 200 is arranged to control the system 299 so that it can physically connect the vehicle to a charging station. This is in one example achieved via using a kneeling function and/or via changing the distance between the vehicle body and/or the chassis and the ground at at least one axle of the vehicle. In one example, the first control 200 is arranged to operate at least one suspension system 240a-240d so that air is evacuated from the at least one air bellows of said at least one suspension system 240a-240d. In one example said operation of said at least one suspension system 240a-240d provides a kneeling function. In one example said operation provides a changing of the distance between, on one side, the vehicle body and/or the chassis, and, on the other side, the ground at at least one axle of the vehicle. Said kneeling and/or changing of the distance can directly be used to connect the vehicle to the charging station. An embodiment of such a system is described in further detail in the Swedish patent application with application number 1651176-8.
The system 299 comprises means 260 for heating said compressed air before it reaches said charging adapter 290. In one example said means 260 comprise a combustion engine of the vehicle. In one example said means comprise an electrical consumer unit of the vehicle. In one example said means 260 comprise a heating element. Said air transport arrangement can be arranged to pass said means 260 (not shown in the figure). By using a combustion engine or an electrical consumer, waste heat from the combustion engine or the electrical consumer can be used to heat the compressed air. Thus, such a solution requires no extra energy consumption. Means 260 for heating are especially useful during winter time since heated air more easily can melt ice or snow which might be placed at the charging adapter.
Said first control unit 200 is arranged to control operation of said means 260. Said first control unit 200 is arranged for communication with said means 260 via a link L280. Said first control unit 200 is arranged to receive information from said means 260, for example information regarding a temperature at said means 260.
A second control unit 205 is arranged for communication with the first control unit 200 via a link L205 and may be detachably connected to it. It may be a control unit external to the vehicle 100. It may be adapted to conducting the innovative method steps according to the invention. The second control unit 205 may be arranged to perform the inventive method steps according to the invention. It may be used to cross-load software to the first control unit 200, particularly software for conducting the innovative method. It may alternatively be arranged for communication with the first control unit 200 via an internal network on board the vehicle. It may be adapted to performing substantially the same functions as the first control unit 200, such as controlling any of the elements of the system 299. The innovative method may be conducted by the first control unit 200 or the second control unit 205, or by both of them.
The idea of the present disclosure is explained in more detail in relation to Fig. 3a-c.
Fig. 3a-c show, in a schematic way, examples of how a system according to the present invention can be arranged in a vehicle. Fig. 3a shows a schematic section of the vehicle depicted in Fig. 1. Said section could, for example, be a side view of the lower rear part or the lower front part of the vehicle. The charging adapter 290 is of the vehicle is depicted close to the end of the vehicle body. The charging adapter 290 can alternatively be placed on the chassis of the vehicle. The corresponding adapter 291 of the charging station is placed in the ground. As can be seen the depicted adapters are of the pin-hole type. However, any other adapter type can be used as well, for example adapter comprising at least one contact area or the like. In the shown example the charging adapter 290 comprises pins and the corresponding adapter 291 comprises holes. The idea of the present disclosure works equally when the charging adapter 290 comprises holes and the corresponding adapter 291 pins. In one example both adapters 290, 291 comprise at least one pin and at least one hole. In the shown example the vehicle is placed in such a position that the two adapters could be connected without moving the wheels of the vehicle. In other words, the vehicle is positioned at a pre-determined position in relation to a charging station which allows connexion to the charging station. This is, however, not a requirement. In case the charging adapter 290 is cleared it is not necessary to do it first when the charging adapter 290 is close to the corresponding adapter 291 of the charging station.
Fig. 3b and 3c depict two situations in more detail than Fig. 3a. What has been described in relation to Fig. 3a applies to Fig. 3b and 3c as well.
Fig. 3b depicts schematically a situation where the system 299 is arranged to clear the charging adapter 290 of the vehicle. Means 250 for blowing comprising an airtransport arrangement are arranged at an air suspension system 240 which comprises an air bellows. The air can then, for example, be transported from the air bellows through a pipe to an opening of the pipe. At the opening of the pipe the air leaves the means 250 for blowing, as is indicated by the lines 251. In Fig. 3b the means 250 for blowing are oriented so that the air is directed to the charging adapter 290. The size of the air transport arrangement, such as the diameter of a pipe, is preferably adapted to the kind of charging adapter which is used.
Similarly, the orientation of the means 250 for blowing, especially the opening which preferably directs the air in a pre-determined direction, is adapted to the kind of charging adapter which is used. Similarly, the opening is adapted in its size and its kind of additional elements which it might comprise, such as nozzles, adapted to the kind of charging adapter which is used. Also the distance between said opening and the charging adapter can be adapted to optimise blowing effect of the air.
Fig. 3c depicts schematically a situation where the system 299 is arranged to clear the corresponding adapter 291 of the charging station. What has been said in relation to Fig. 3b in regard to the charging adapter 290 applies correspondingly to Fig. 3c in regard to the corresponding adapter 291. In Fig. 3c an extra pipe extending below the vehicle body and/or the chassis is depicted. This is, however, not necessary. In another embodiment, an arrangement for clearing the corresponding adapter 291 looks like the arrangement in Fig. 3b. Then air bellows can be used to lower the chassis and/or the vehicle body so that said opening comes closer to the ground. In this way a clearing of the adapter 291 can be provided without the need of an extra pipe.
The schematically depicted pipes in Fig. 3b and 3c are drawn straight. In practice, especially when using means for heating, the pipes or other elements of a transport arrangement may have a more complicated form. This can for example be due to the fact that the pipes are drawn close to the engine to use the heat of the engine for heating the air.
In Fig. 3a-c the adapters are shown below the vehicle and on the road, respectively. However, the adapters can be placed anywhere at the vehicle, such as on a side of the vehicle body or at the roof of the vehicle. Since said means 250 only have to transport air, said air can easily be transported to adapters at other parts of the vehicle.
Fig. 4 shows, in a schematic way, a flow chart over an example of a method 300 according to the present invention. Said method 300 is a method for clearing a charging adapter for charging a plug-in electrical vehicle. Said method starts with the optional step 310. It should be understood that the method 300 can comprise any of the functions described in relation to elements of the system 299 in Fig. 2. In a corresponding way, elements of the system 299 can be arranged to perform any of the functions or steps described in relation to the method 300.
Step 310 comprises positioning the vehicle at a pre-determined position in relation to a charging station. Said positioning can be performed autonomously by the vehicle. Said positioning can be performed via automatically controlling the engine and/or the steering of the vehicle. This can be performed with the help of the means 220. Said positioning can be performed in such a way that the wheels of the vehicle do not have to be moved for connecting the vehicle to a charging station. Said positioning can be performed in such a way that a clearing of an adapter, especially an adapter of the charging station, can be performed. The method continues with the optional step 320.
Step 320 comprises lowering the distance between a chassis and/or vehicle body of the vehicle and at least one axle of the vehicle by evacuating air from at least one air bellows of the vehicle. The method continues with step 330.
Step 330 comprises blowing compressed air on a charging adapter. Step 330 can comprise clearing said charging adapter by said blowing. Said charging adapter can be a charging adapter of the vehicle. Said charging adapter can be a charging adapter of a charging station. Said compressed air originates from at least one air bellows of the vehicle. In one example said compressed air originates from evacuated air from at least one air bellows. In one example said evacuated compressed air from said at least one air bellows is used for said blowing. In one example said compressed air originates from the lowering action in step 320. Especially for busses a lowering as described in relation to step 320 is often performed during operation of the bus, for example as a kneeling function, for providing an easier entering and/or leaving process for passengers of the bus. During such a lowering procedure, air is usually evacuated from at least one air bellows and released through a valve into the atmosphere. Using the evacuated air instead for clearing a charging adapter, for example by guiding it towards the charging adapter, thus provides no extra energy consumption for the clearing procedure. This is due to the fact that the air would have been released anyhow. Said clearing can be performed at any time air from an air bellows is evacuated. Thus said clearing can, for example, be performed every time the bus stops at a bus stop. It is not necessary to wait with the clearing until the bus reaches a charging station. Rather, clearing the charging adapter frequently, for example every time the bus stops at a bus stop, might prevent the collection of larger amounts of ice, snow, mud, or the like at the charging adapter. During step 330 the optional step 340 can be performed.
Step 340 comprises heating said compressed air before it reaches said charging adapter. This can be performed by guiding said compressed air close to a heat generating element before it is blown on the charging adapter. In one example the compressed air is guided close to combustion engine of the vehicle. In one example the compressed air is guided close to an electrical consumer unit of the vehicle. Combustion engines and/or electrical consumer units, such as heaters, air conditioning systems, pumps, or the like, are often used during driving of a bus. Said combustion engine and/or electrical consumer unit usually generate heat, for example waste heat, during operation. Heating the compressed air by a heat generating element thus can provide heating of the air without any extra energy consumption. However, it is also possible to heating the air with an element which consumes extra power for heating the air. Such a solution can be preferred during very cold days when a heating from other elements might not be enough for clearing the adapter. The method continues with the optional step 350.
Step 350 comprises physically connecting the vehicle to a charging station via using a kneeling function and/or via changing the distance between the vehicle body and/or the chassis and the ground at at least one axle of the vehicle. After step 350 the optional step 360 is performed.
Step 360 comprises charging the vehicle. The method ends after step 360.
It should be noted that the method does not necessarily have to be performed in the strict order described here. The steps can be performed at other orders or in parallel. As an example, step 320 can be repeated during operation of the vehicle, such as a bus, whereas the steps 310-360 are only performed when the vehicle reaches the charging station. As another example, step 320 and step 350 might coincide, or step 330 and step 350 might be interchanged. As another example, step 330 can be performed simultaneously to step 350. Thus, the above described order is only provided for explaining the idea of the invention. However, modifications of the order within the wording of the claims will be easily possible for a person skilled in the art.
Figure 5 is a diagram of one version of a device 500. The control units 200 and 205 described with reference to Figure 2 may in one version comprise the device 500. The device 500 comprises a non-volatile memory 520, a data processing unit 510 and a read/write memory 550. The non-volatile memory 520 has a first memory element 530 in which a computer program, e.g. an operating system, is stored for controlling the function of the device 500. The device 500 further comprises a bus controller, a serial communication port, I/O means, an A/D converter, a time and date input and transfer unit, an event counter and an interruption controller (not depicted). The non-volatile memory 520 has also a second memory element 540.
The computer program comprises routines for charging a plug-in electrical vehicle.
The computer program P may comprise routines positioning the vehicle at a pre-determined position in relation to a charging station. This may at least partly be performed by means of said first control unit 200 controlling operation of an engine of the vehicle. The computer program P may comprise routines for physically connecting the vehicle to a charging station via using a kneeling function and/or via changing the distance between the vehicle body and the ground at at least one axle of the vehicle. This may at least partly be performed by means of said first control unit 200 controlling operation of a suspension system of the vehicle.
The computer program P may comprise routines for blowing compressed air on said charging adapter. This may at least partly be performed by means of said first control unit 200 controlling the suspension system of the vehicle, for example a valve of the suspension system.
The computer program P may comprise routines for lowering the distance between a chassis of the vehicle and at least one axle of the vehicle by evacuating air from at least one air bellows of the vehicle. This may at least partly be performed by means of said first control unit 200 controlling the suspension system of the vehicle, for example a valve of the suspension system.
The computer program P may comprise routines for heating said compressed air before it reaches said charging adapter. This may at least partly be performed by means of said first control unit 200 controlling said means 260 for heating compress air.
The computer program P may comprise routines for charging the vehicle. This may at least partly be performed by means of said first control unit 200 controlling said communication arrangement 295 and/or said battery 280 and/or said adapter 290.
The program P may be stored in an executable form or in compressed form in a memory 560 and/or in a read/write memory 550.
Where it is stated that the data processing unit 510 performs a certain function, it means that it conducts a certain part of the program which is stored in the memory 560 or a certain part of the program which is stored in the read/write memory 550.
The data processing device 510 can communicate with a data port 599 via a data bus 515. The non-volatile memory 520 is intended for communication with the data processing unit 510 via a data bus 512. The separate memory 560 is intended to communicate with the data processing unit via a data bus 511. The read/write memory 550 is arranged to communicate with the data processing unit 510 via a data bus 514. The links L205, L220, L240a-L240d, L260, L280, and L295, for example, may be connected to the data port 599 (see Figure 4).
When data are received on the data port 599, they can be stored temporarily in the second memory element 540. When input data received have been temporarily stored, the data processing unit 510 can be prepared to conduct code execution as described above.
Parts of the methods herein described may be conducted by the device 500 by means of the data processing unit 510 which runs the program stored in the memory 560 or the read/write memory 550. When the device 500 runs the program, methods herein described are executed.
The foregoing description of the preferred embodiments of the present invention is provided for illustrative and descriptive purposes. It is neither intended to be exhaustive, nor to limit the invention to the variants described. Many modifications and variations will obviously suggest themselves to one skilled in the art. The embodiments have been chosen and described in order to best explain the principles of the invention and their practical applications and thereby make it possible for one skilled in the art to understand the invention for different embodiments and with the various modifications appropriate to the intended use.
It should especially be noted that the system according to the present disclosure can be arranged to perform any of the steps or actions described in relation to the method 300. It should also be understood that the method according to the present disclosure can further comprise any of the actions attributed to an element of the engine system 299 described in relation to Fig. 2. The same applies to the computer program and the computer program product.

Claims (16)

1. A method (300) for clearing a charging adapter (290, 291) for charging a plug-in electrical vehicle (100), the method comprising the step of: - blowing (330) compressed air on said charging adapter (290, 291), wherein said compressed air originates from at least one air bellows of the vehicle (100).
2. The method according to the previous claim, further comprising the step of: - lowering (320) the distance between a chassis of the vehicle (100) and at least one axle of the vehicle (100) by evacuating air from at least one air bellows of the vehicle (100), wherein said evacuated air is used for said blowing.
3. The method according to any of the previous claims, further comprising the step of: - positioning (310) the vehicle (100) at a pre-determined position in relation to a charging station.
4. The method according to any of the previous claims, further comprising the step of: - physically connecting (350) the vehicle (100) to a charging station via using a kneeling function and/or via changing the distance between the vehicle (100) body and/or the chassis and the ground at at least one axle of the vehicle (100).
5. The method according to any of the previous claims, further comprising the step of: - charging (360) the vehicle (100).
6. The method according to any of the previous claims, further comprising the step of: - heating (340) said compressed air before it reaches said charging adapter (290, 291).
7. A system (299) for clearing a charging adapter (290, 291) for charging a plug-in electrical vehicle (100), the system comprising: - means (240, 250) for blowing, being arranged to blow compressed air on said charging adapter (290, 291), wherein said compressed air originates from at least one air bellows of the vehicle (100).
8. The system according to the previous claim, further comprising: - at least one air bellows being arranged for lowering the distance between a chassis of the vehicle (100) and at least one axle of the vehicle (100) by evacuating air from said at least one air bellows, wherein the system is arranged to guide said air to said means for blowing so that said means for blowing use said evacuated air for said blowing.
9. The system according to any of claims 7-8, further comprising: - means (200, 220) for positioning the vehicle (100) at a pre-determined position in relation to a charging station.
10. The system according to any of claims 7-9, further comprising: - means (200, 240a-240d) for physically connecting the vehicle to a charging station via using a kneeling function and/or via changing the distance between the vehicle (100) body and/or the chassis and the ground at at least one axle of the vehicle (100).
11. The system according to any of claims 7-10, further comprising: - means (200, 280, 290, 295) for charging the vehicle (100).
12. The system according to any of claims 7-11, further comprising: - means (200, 260) for heating said compressed air before it reaches said charging adapter (290, 291).
13. A plug-in electrical vehicle (100), comprising the system according to any of claims 7-12.
14. The vehicle (100)according to claim 13, wherein said vehicle (100) is a plug-in hybrid electric vehicle or a battery electrical vehicle.
15. A computer program (P) for clearing a charging adapter (290, 291) for charging a plug-in electrical vehicle (100), wherein said computer program (P) comprises program code for causing an electronic control unit (200; 500) or a computer (205; 500) connected to the electronic control unit (200; 500) to perform the steps according to anyone of the claims 1-6.
16. A computer program product containing a program code stored on a computer-readable medium for performing method steps according to anyone of claims 1-6, when said computer program is run on an electronic control unit (200; 500) or a computer (205; 500) connected to the electronic control unit (200; 500).
SE1651179A 2016-09-02 2016-09-02 Method and system for clearing a charging adapter for charging a plug-in electrical vehicle SE540236C2 (en)

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