Integral Electric Power/Compact Construction Equipment System
A system and method for charging a rechargeable battery for a vehicle are disclosed. The system may comprise an electrical generation apparatus that is a source of electric charge, a mobile unit to transport a vehicle, and a tie down having an input end and an output end. The tie down may be configured to releasably secure the vehicle to the mobile unit and to provide electrical charge generated by the electrical generation apparatus to the battery.
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This patent application is a divisional of copending U.S. patent application Ser. No. 13/172,247, filed Jun. 29, 2011.
TECHNICAL FIELDThe present disclosure generally relates to a system for transporting and charging a vehicle that uses a rechargeable battery and, more particularly, relates to electrical generation systems for charging batteries for use with compact earth moving, construction, material handling vehicles, and the like.
BACKGROUNDUse of vehicles such as compact excavators, forktrucks, wheel loaders, and the like for material handling, digging trenches, snow removal, and other material handling, construction, earth moving and maintenance applications is known. Typically these vehicles utilize combustion engines that generate exhaust gases and unwelcome loud operating noise. Use of such vehicles may also result in spilled fuel during operation or refueling of the vehicle engine.
While the compact size of such vehicles makes them ideal for indoor use, the resulting exhaust gases, noise and fuel spillage makes these vehicles undesirable for indoor use, in urban areas, “green” construction sites, or in areas with stringent environmental regulations. It would be desirable to use electric powered compact vehicles for such industrial, residential or commercial indoor or outdoor sites. Because the batteries on these vehicles need to be charged prior to use, it would be beneficial if the batteries were charged during transportation to and from the site, were able to be recharged at the site, and were easily interchangeable between multiple pieces of equipment at the site.
U.S. Pat. No. 7,514,803 (“Wilks”), issued Apr. 7, 2009, is an example of prior art related to electrical power generation and storage devices for portable or emergency use. FIG. 1 of Wilks illustrates an apparatus comprises a towable trailer that incorporates a wheel driven electrical power generation apparatus used to charge a battery when the trailer is pulled and the wheels rotate within a optimum range. Batteries (e.g. chemical batteries) are placed on the trailer bed for transportation and charging. While this design may provide for charging of batteries during transportation, it does not address how these batteries are secured to the trailer bed during transportation and disadvantageously makes no provision for securing a vehicle to the trailer for transportation of the vehicle and charging of a battery in the vehicle during such transportation. A more efficient design would be desirable.
SUMMARY OF THE DISCLOSUREIn accordance with one aspect of the disclosure, a system for transporting and charging a rechargeable battery is disclosed. The system may comprise an electrical generation apparatus that is a source of electric charge, a mobile unit including a trailer portion, the mobile unit configured to transport a first vehicle, and a tie down having an input end and an output end. The tie down may be attached to the trailer portion and may be configured to releasably secure the first vehicle to the trailer portion. The input end of the tie down may be electrically connected to the electrical generation apparatus, and generation apparatus and the output end may be configured to be electrically connected to the battery to provide electrical charge to the battery.
In accordance with another aspect of the disclosure, an apparatus for transporting a first vehicle is disclosed. The apparatus may comprise an electrical generation apparatus that is a source of electric charge, a truck, a trailer portion attached to the truck, the trailer portion including a bed, a first vehicle disposed on the bed, and a first tie down attached to the trailer portion and configured to releasably secure the first vehicle to the trailer portion. The first vehicle may include a frame, a first rechargeable battery disposed on the frame, and a first mount. The first tie down may have a first input end and a first output end. The first input end may be electrically connected to the electrical generation apparatus and the first output end may be electrically connected to the first battery and configured to provide electric charge to the battery.
In accordance with a further aspect of the disclosure, a method of charging a battery for a vehicle is disclosed. The method may comprise providing an electrical generation apparatus configured to generate electrical charge, a trailer portion having a bed, a first vehicle disposed on the bed, and a tie down, the first vehicle including a frame, a rechargeable battery disposed on the frame and a mount, the tie down including an input end and an output end, the input end electrically connected to the electrical generation apparatus and the output end configured to be attached to the mount of the vehicle and to be electrically connected to the battery. The method may further include releasably securing the vehicle to the trailer portion with the output end of the tie down, electrically connecting the output end to the battery, generating electrical charge by operating the electrical generation apparatus, and charging the battery via the output end of the tie down with charge that results from the generating step.
Referring now to the drawings, and with specific reference to
The mobile unit 102 may further include a hauling vehicle 124 such as a truck, dump truck, utility vehicle, industrial vehicle, or the like.
The electrical generation apparatus 104 is a source of electrical charge. It may be an electrical generator, as is known in the art, mounted on, or disposed in, the mobile unit 102. In one embodiment, the electrical generation apparatus 104 may be mounted on the trailer portion 108. In other embodiments, the electrical generation apparatus 104 may be disposed in the hauling vehicle 124, for example a truck. The electrical generation apparatus 104 disposed in the hauling vehicle 124 may be an electrical generator configured to produce electrical energy as is known in the art. Alternatively, in a different embodiment, the electrical generation apparatus 104 disposed in the hauling vehicle 124 may comprise the engine assembly 126 of the hauling vehicle 124 and an alternator 128. The engine assembly 126 may be configured to produce mechanical energy, as is known in the art. The alternator 128 may be connected to the engine assembly 126 and may be configured to convert mechanical energy received from the engine assembly 126 into electrical energy as is known in the art.
The tie down 106 (
In one embodiment in which the electrical generation apparatus 104 comprises a truck engine 126 and an alternator 128, the alternator 128 may be connected, directly or indirectly, to the input end 130 of the tie down 106. In a different embodiment in which the electrical generation apparatus 104 is an electrical generator, the input end 130 of the tie down 106 may be connected, directly or indirectly, to the electrical generator.
The tie down 106 may be mounted on the trailer portion 108. In one embodiment, the tie down 106 may be mounted to a side 118 of the trailer portion 108. In another embodiment, the tie down 106 may be mounted to the bed 114 of the trailer portion 108 and may secure the vehicle 110 being transported from underneath. Other appropriate locations for mounted the tie down 106 to the trailer portion 108 are possible.
A first lead 140 may be attached to the first electrical cable 136 at the output end 132 of the tie down 106. A second lead 142 may be attached to the second electrical cable 138 at the output end 132 of the tie down 106. In some embodiments, the tie down may also comprise a conduit 144. The conduit 144 may substantially surround or wrap the restraint member 134 and the first and second electrical cables 136, 138. The first and second electrical cables 136, 138 may be disposed adjacent to the restraint member 134.
The restraint member 134 may be flexible. For example, the restraint member 134 may be, but is not limited to, a wire, a plurality of wires, a non-electrical cable, a chain, a rope, or the like. In other embodiments, the restraint member 134 may be rigid in form, for example, cast metal or resin, or the like. In embodiments in which the restraint member 134 is rigid, fasteners may hold the first and electrical cables 136, 138 to the restraint member 134 and the conduit 144 may, or may not be present, in the tie down 106. Additionally, in some embodiments, the first and second electric cables 136, 138 may be routed through an interior channel formed in the restraint member 134.
The restraint member 134 may comprise a connector 146 disposed at the output end 132 of the tie down 106. The connector 146 may be any of a variety of appropriate connector 146 known in the art. The connector 146 may be configured to be releasably attached to a receiving member 148 disposed on a mount 152 on the frame 150 of the vehicle 110 to be transported by the trailer portion 108. In the embodiment illustrated in
The output end 132, more specifically the connector 146, of the first tie down 106 is configured to lockingly fasten to the vehicle 110 and in doing so releasably secure the vehicle 110 to the trailer portion 108. In some embodiments, the tie down 106, when fastened to the vehicle 110, substantially immobilizes the vehicle 110 with respect to the trailer portion 108. The output end 132 of the tie down 106 is electrically connected to the rechargeable battery 133 via the first and second electrical cables 136, 138. Specifically, the first lead 140 of the first electrical cable 136 may be connected, either directly or indirectly, to a first terminal of the rechargeable battery 133. The second lead 142 of the second electrical cable 138 may be connected, either directly or indirectly, to a second terminal of the rechargeable battery 133.
The mobile unit 102 may also include a rack 164 (
As illustrated in
The present disclosure may find applicability in the transportation and charging of work vehicles that use rechargeable electric batteries such as those used for indoor use, urban areas, “green” construction sites, or other work sites with stringent environmental pollution and noise regulations.
The mobile unit described above may be utilized to charge a rechargeable battery in a vehicle as the vehicle is being transported to and from a work site or, alternatively, on-site at the work location. Such a mobile unit may also be utilized to charge the batteries in multiple vehicles. In addition, spare rechargeable batteries may also be transported with the work vehicle to the site and may also be charged during transportation or while on-site at the work location.
An input end of a tie down may be may be connected to the trailer of the mobile unit and to the electrical generation apparatus disposed on the mobile unit. The output end of a tie down may be connected to the vehicle to releasably secure the vehicle in place on the trailer. The output end of the tie down may also be electrically connected to the battery disposed in the vehicle. When the electrical generation apparatus is operated, an electrical charge is generated and the battery may then be charged via the transfer of electrical charge generated by the electrical generating apparatus to the battery through the tie down.
In addition to having a tie down configured to charge a first vehicle, the mobile unit may include another tie down to charge a second vehicle or to charge one or more spare batteries disposed in a rack secured to the mobile unit, the trailer portion of the mobile unit or the truck of the mobile unit. The ability to charge a spare battery or batteries is quite beneficial because when the charge in the battery of the vehicle transported to the work site is spent due to use, the spent battery may be conveniently replaced with a charged spare battery. This effectively extends the work availability of the vehicle while on-site. In addition, to the extent that the batteries in a variety of the work vehicles at the work location are interchangeable, the charged spare batteries may also be used to replace such batteries in such other vehicles. In addition, the ability to charge rechargeable batteries with a power source that is not part of the mobile unit, such as a land based power source, allows the batteries to be charged overnight at a work site or off-shift at a work site. This increases the flexibility offered by the system.
The mobile unit may, in some embodiments, transport a plurality of vehicles. In such an embodiment, a plurality of tie downs may be desired, each tie down in a one-to-one correspondence with a vehicle.
In summary, a method is disclosed for providing an electrical generation apparatus configured to generate electrical charge, a trailer portion having a bed, a first vehicle disposed on the bed, and a tie down, the first vehicle including a frame, a rechargeable battery disposed on the frame and a mount, the tie down including an input end and an output end, the input end electrically connected to the electrical generation apparatus and the output end configured to be attached to the mount of the vehicle and to be electrically connected to the battery. The method further includes releasably securing the vehicle to the trailer portion with the output end of the tie down, electrically connecting the output end to the battery, generating electrical charge by operating the electrical generation apparatus, and charging the battery via the output end of the tie down with charge that results from the generating step.
The features disclosed herein may be particularly beneficial to compact excavators, forktrucks, wheel loaders, and the like used for material handling, digging trenches, snow removal, and other material handling, construction, earth moving and maintenance applications at work sites with environmental pollution and noise restrictions or concerns.
Claims
1. A method of charging a battery, the method comprising:
- providing an electrical generation apparatus configured to generate electrical charge, a trailer portion having a bed, a first vehicle disposed on the bed, and a tie down, the first vehicle including a frame, a rechargeable battery disposed on the frame and a mount, the tie down including an input end and an output end, the input end electrically connected to the electrical generation apparatus and the output end configured to be attached to the mount of the vehicle and to be electrically connected to the battery;
- releasably securing the vehicle to the trailer portion with the output end of the tie down;
- electrically connecting the output end to the battery;
- generating electrical charge by operating the electrical generation apparatus; and
- charging the battery via the output end of the tie down with charge that results from the generating step.
2. The method of claim 1, further comprising:
- providing a truck attached to the trailer portion; and
- towing the trailer portion during the charging step.
3. The method of claim 2, the electrical generation apparatus comprises an engine and an alternator coupled to the engine, the alternator configured to convert mechanical energy received from the engine to electrical charge.
4. The method of claim 2, further comprising:
- providing a power source separate from the truck and the trailer portion;
- connecting the power source to the input end of the tie down; and
- charging the battery with charge from the power source.
5. The method of claim 1, in which the output end includes a first connector configured to be electrically connected to the battery and a second connector configured to be lockingly attached to the mount of the vehicle.
6. The method of claim 1, the electrical generation apparatus is an electrical generator mounted on the trailer.
7. A method of reducing downtime for an electric charge machine, the method comprising:
- providing mobile unit that includes an electrical generation apparatus configured to generate electrical charge, a first electric charge machine disposed on the mobile unit, and at least one tie down, the first electric charge machine including a frame, a first rechargeable battery disposed on the frame and a mount, the tie down including an input end, an output end, a restraint member extending from the input end to the output end, and first and second electrical cables extending from the input end to the output end and disposed adjacent to the restraint member, the restraint member different from the first and second electrical cables, the input end electrically connected to the electrical generation apparatus;
- releasably securing the electric charge machine to the mobile unit with the output end of the tie down;
- electrically connecting the output end to the first rechargeable battery;
- generating electrical charge by operating the electrical generation apparatus; and
- charging the rechargeable battery via the output end of the tie down with charge that results from the generating step.
8. The method of claim 7, wherein the charging is during transit of the mobile unit.
9. The method of claim 7, further comprising:
- providing a spare rechargeable battery disposed on the mobile unit, wherein the at least one tie down is a plurality of tie downs; and
- charging the spare rechargeable battery, via the second tie down of the plurality of tie downs, with charge that results from the generating.
10. The method of claim 9, further comprising:
- replacing a second rechargeable battery disposed on a second electric charge machine with the spare rechargeable battery after the charging of the spare rechargeable battery.
11. The method of claim 10, further comprising:
- after the replacing, charging the second rechargeable battery, via one of the plurality of tie downs, with charge that results from the generating.
12. The method of claim 9, further comprising:
- charging a second rechargeable battery while the second rechargeable battery is disposed on a second electric charge machine, via one of the plurality of tie downs, with charge that results from the generating.
13. The method of claim 12, wherein the charging is conducted indoors.
14. The method of claim 12, wherein the charging is conducted at a green construction site.
15. The method of claim 7, wherein the charging is conducted in an urban area.
16. The method of claim 7, further comprising:
- providing a power source that is not part of the mobile unit; and
- charging the first rechargeable battery, via the tie down, with electrical charge generated by the power source.
17. The method of claim 7, further comprising:
- providing a power source that is not part of the mobile unit; and
- charging a spare rechargeable battery via the tie down, with electrical charge generated by the power source.
18. A method of reducing downtime for an electric charge vehicle, the method comprising:
- providing an electrical generation apparatus that is a source of electric charge, a mobile unit including first and second tie downs, the mobile unit configured to transport a first vehicle and a rack, the first vehicle including a frame, a reciprocal receiving receptacle disposed in the frame, and a rechargeable battery disposed on the frame, the first tie down having an input end and an output end, the first tie down including a restraint member extending from the input end to the output end, and first and second electrical cables extending from the input end to the output end and disposed adjacent to the restraint member, the restraint member including a male prong-like connector disposed at the output end of the first tie down, the restraint member different than the first and second electrical cables, the first tie down attached to the mobile unit and the male prong-like connector configured to releasably immobilize the first vehicle to the mobile unit when the male prong-like connector is inserted into the reciprocal receiving receptacle in the frame of the first vehicle, the input end electrically connected to the electrical generation apparatus, and the output end configured to be electrically connected to the rechargeable battery disposed on the frame to provide electrical charge to the rechargeable battery, a spare rechargeable battery disposed in the rack, the second tie down having a second tie down input end and a second tie down output end, the second tie down including a second restraint member extending from the second tie down input end to the second tie down output end, and third and fourth electrical cables extending from the second tie down input end to the second tie down output end and disposed adjacent to the second restraint member, the second tie down attached to the trailer portion and configured to releasably secure the rack to the mobile unit, the second tie down input end electrically connected to the electrical generation apparatus, and the second tie down output end configured to be electrically connected to the spare rechargeable battery to provide electrical charge to the spare rechargeable battery;
- charging the rechargeable battery during transit of the mobile unit;
- charging the spare rechargeable battery; and
- replacing a second rechargeable battery mounted on a second vehicle, with the spare rechargeable battery.
Type: Application
Filed: May 1, 2015
Publication Date: Aug 20, 2015
Applicant: CATERPILLAR INC. (Peoria, IL)
Inventors: Philip H. McCluskey (Plainfield, IL), Reid W. Waitt (Four Oaks, NC), Mary H. Bell (Cary, NC)
Application Number: 14/701,981