AU2021100401A4 - Power System for a Vehicle - Google Patents

Power System for a Vehicle Download PDF

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Publication number
AU2021100401A4
AU2021100401A4 AU2021100401A AU2021100401A AU2021100401A4 AU 2021100401 A4 AU2021100401 A4 AU 2021100401A4 AU 2021100401 A AU2021100401 A AU 2021100401A AU 2021100401 A AU2021100401 A AU 2021100401A AU 2021100401 A4 AU2021100401 A4 AU 2021100401A4
Authority
AU
Australia
Prior art keywords
batteries
power
inverter
vehicle
transformer
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
AU2021100401A
Inventor
Ben Liu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sunbase Pty Ltd
Original Assignee
Sunbase Pty Ltd
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 Sunbase Pty Ltd filed Critical Sunbase Pty Ltd
Priority to AU2021100401A priority Critical patent/AU2021100401A4/en
Application granted granted Critical
Publication of AU2021100401A4 publication Critical patent/AU2021100401A4/en
Assigned to Sunbase Pty Ltd reassignment Sunbase Pty Ltd Request for Assignment Assignors: Harvok Pty Ltd
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/002—Intermediate AC, e.g. DC supply with intermediated AC distribution
    • 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
    • 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
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/08—Three-wire systems; Systems having more than three wires
    • H02J1/082—Plural DC voltage, e.g. DC supply voltage with at least two different DC voltage levels
    • 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
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/08—Three-wire systems; Systems having more than three wires
    • H02J1/084—Three-wire systems; Systems having more than three wires for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
    • H02J1/086—Three-wire systems; Systems having more than three wires for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load or loads and source or sources when the main path fails
    • 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
    • H02J7/00047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with provisions for charging different types of batteries
    • 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
    • B60R16/04—Arrangement of batteries
    • 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
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • 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
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/46—The network being an on-board power network, i.e. within a vehicle for ICE-powered road vehicles
    • 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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0025—Sequential battery discharge in systems with a plurality of batteries
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • 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
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source

Abstract

A power system (10) for use in a vehicle comprising one or more 48V batteries (12b) and one or more 12V batteries (12a). An inverter (14) is connected to the 5 48V batteries (12a) in order to convert to an AC output for use powering AC devices and a transformer (16) is provided for converting between 48V and 12V. The 12V battery is connected to provide power to 12V devices in the vehicle when power is not available at the 12V output of the transformer (16). 10 1/2 (Y(U (NN CoY cccq (Y(0

Description

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AUSTRALIA
Patents Act 1990
COMPLETE SPECIFICATION For an Innovation Patent
Invention title:
"Power System for a Vehicle"
Applicant:
Harvok Pty Ltd
Associated provisional applications:
The following statement is a full description of the invention, including the best method of performing it known to me:
"Power System"
Field of the Invention
[001] The present invention relates to power system suitable for use in vehicles such as caravans.
Background to the Invention
[002] Caravans generally include a power system having batteries to be able to provide power when mains supply is not available. Such systems generally comprise one or more 12V batteries. These batteries provide power to 12V devices within the caravan when mains power is not available and can power AC devices through an inverter.
[003] The present invention relates to a power system aimed at providing additional power to the vehicle via 48V batteries and also includes additional features to overcome potential limitations of using 48V systems to power 12V and AC devices within the caravan.
Summary of the Invention
[004] According to one aspect of the present invention there is provided... power system for use in a vehicle comprising: one or more 48V batteries; an inverter connected to the 48V batteries in order to convert the output of the 48V batteries to an AC output for use powering AC devices in the vehicle; a transformer having a 48V input connected to the 48V batteries to convert to a 12V output for powering 12V devices in the vehicle; and a 12V battery connected to provide power to 12V devices in the vehicle when power is not available at the 12V output of the transformer.
[005] Preferably the transformer comprises a dual way transformer such that the 12V batteries provide 48V through the transformer to charge the 48V batteries when mains power is not available.
[006] Preferably the 12V batteries are provided with an alternator connection for connection to an alternator of a towing vehicle such that, when the towing vehicle is in use, the 12V batteries are charged by the alternator via the alternator connection and the 48V batteries are charged via the dual way transformer.
[007] Preferably an AC contactor is provided between an AC input and the AC output of the inverter such that, in the event the inverter were to be faulty or otherwise disconnected, AC power is provided to the AC devices within the vehicle if mains power is available.
[008] Preferably, the inverter senses current draw from the mains supply and includes a load limit, such that when the inverter detects that the load limit has been reached, the inverter draws any additional power required within the vehicle from the 48V batteries.
[009]
[010] In a preferred embodiment, a control unit is provided connected by communication lines to the batteries, the transformer and the inverter to control activation or shut down of the batteries, the transformer and the inverter.
[011] Preferably sensors are provided connected to components of the power system for detecting voltage levels, current levels and temperature such that the control unit can shut down components where the sensed voltage, current or temperature are not within acceptable limits.
[012] In one embodiment, one more distributors are provided having a plurality of distribution ports and where one or the distributors includes the sensors.
Brief Description of the Drawings
[013] The invention will now be described, byway of example, with reference to the following drawings:
[014] Figure 1 is schematic view of a power system in accordance with the present invention showing electrical connection between components of the system; and
[015] Figure 2 is a schematic of the power system showing communication connections between modules of the power system.
Detailed Description of Preferred Embodiments
[016] Referring to Figures, there is shown a power system 10 for use in vehicles such as caravans or RVs. The power system 10 is provided for powering DC and AC powered electrical devices used in connection with the vehicle.
[017] The power system 10 comprises generally one or more batteries 12, an inverter 14 and a transformer 16. The batteries 12 are provided to supply power to devices when a mains power supply is not available. The inverter 14 is provided to convert the DC power from the batteries 12 into AC power for use within the vehicle. The AC power is provided to power AC devices and may be connected to standard power outlets within the vehicle to which the AC devices may then be connected.
[018] The batteries 12 comprise one or more 48V batteries 12a and one or more 12V batteries 12b. The 48V batteries 12a are connected to a DC connection of the inverter 12 such that the inverter 12 may generate AC power at an AC output 20 on the inverter 12. The AC output is connected to AC devices within the vehicle or to AC sockets provided within the vehicle, to which AC devices may be connected via standard power plugs. A 48V fuse box 24 is provided between the 48V batteries 12a and the inverter 12.
[019] The inverter 12 includes also an AC input 22. The AC input 22 is provided for connection to an AC power supply when available. The inverter 12 may thereby provide DC power back to the 48V batteries 12a for charging of the 48V batteries 12a.
[020] The power system 10 is provided with one or more distributors for connection to a plurality of DC devices within the vehicle. In the embodiment shown, there is provided a first distributor 26 and a second distributor 27. The first distributor 26 in the embodiment shown comprises an 8 port distributor module and the second distributor 27 comprises a 6 port distributor module connected vie a relay 28. A 12V fuse box 30 is also provided for connection between the 12V batteries 12b other components of the system 10.
[021] The 48V batteries 12a are connected to a 48V connection 32 of the transformer 16. The transformer 16 converts the 48V power from the 48V batteries 12a to 12V power at a 12V connection 34 on the transformer 16. The 12V connection 34 of the transformer 16 is connected via the 12V fuse box 30 through to the second distributor 27 such that the 48V batteries can provide power to the 12V devices in use.
[022] The use of both the 12V batteries 12b along with the 48V batteries 12a in this configuration means that while providing the additional power benefits of 48V batteries 12a, the 12V battery can provide immediate power to 12V devices, such as water pumps, in the vehicle prior to wake up of the transformer 14. Once the transformer 14 is operating, the 48V batteries 12a can provide both 12V power to 12V devices in the vehicle, as well as charging the 12V batteries 12b via the transformer 14.
[023] The 12V batteries 12b are provided with an alternator connection 36 for connection to an alternator of a towing vehicle. While the towing vehicle is in use, the 12V batteries 12b are therefore charged by the alternator via the alternator connection 36. Further, the transformer 14 comprises a dual way transformer such that charge is provided through the transformer 14 from the alternator to charge also the 48V batteries 12a.
[024] The power system 10 is provided also with an AC contactor 38. The AC contactor is provided between the AC input 22 and the AC output 20 of the inverter 14 such that, in the event the inverter 14 were to be faulty or otherwise disconnected, AC power could still be provided to the AC devices within the vehicle if mains power is available.
[025] The inverter 14 also senses the current draw from the mains supply and includes a load limit, such that the power system 10 will not draw more power than the load limit from the mains supply. When the inverter 14 detects that the load limit has been reached, the inverter draws any additional power required within the vehicle from the 48V batteries. This additional power is converted to DC by the inverter 14 to provide the additional power to the AC devices within the vehicle.
[026] The use of the 48V batteries provides a sufficient amount of power to support many AC devices within the vehicle. As this power supplied by the 48V batteries may exceed the amount of power that may be drawn through a standard AC connection that may be provided at a caravan park. Therefore, if the users of the vehicle were to operate all of these devices when the power system 10 is connected to a main supply, it may overlaod the connection to the mains supply. The load limit provided on the inverter 14 therefor eliminates this risk and allows the users of the vehicle to continue to use all of their AC devices.
[027] As can be seen in Figure 2, the power system 10 includes connections between components of the system and a control unit 40. The control unit 40 is connected to other components of the system via communication lines 42. The communication lines 42 connect to COM ports on the 48V batteries 12b, the inverter 14, the transformer 16 and the power distribution modules 26 and 27.
[028] The control unit 40 is connected to components of the power system 10 such that the control unit 40 can activate or shut down each of the components. The control unit 10 can also activate or shut down the components in one or more programmed sequences. In normal operation, the control unit 10 activates first the 48V batteries 12b, then the transformer 16, then the inverter 14 and the distributors 26 and 27.
[029] The control unit 10 also received information from one or more sensors connected to one or more of the components of the power system 10. In the embodiment shown, the first distributor 26 includes sensors connected to components for sensing parameters including voltage, current and temperature of the components. The sensors may also be connected to devices within the vehicle, for example a water tank to detect a water level within the tank. The sensed parameters are used by the control unit 40 to control operation of the components of the system.
[030] The control unit 10 may prevent activation of one of the components of the system and subsequent components in the sequence on determining that a sensed parameter is not within acceptable limits. For example, the control unit may prevent activation, or shutdown components if overcurrent flow is detected in the transformer 16 or the inverter 14. Also, the batteries 12a or 12b may be disconnected if sensed current flow, voltage levels or temperatures are not within acceptable limits.
[031] The power system 10 includes also a screen 44 connected to the control unit 40. The screen 44 is used to display information regarding the system, such as sensed parameters and the status of components. The screen may also comprise a touch screen in order to provide instructions to the control unit 40 for operation of the power system 10.
[032] It will be readily apparent to persons skilled in the relevant arts that various modifications and improvements may be made to the foregoing embodiments, in addition to those already described, without departing from the basic inventive concepts of the present invention.

Claims (8)

The claims defining the invention are as follows:
1. A power system for use in a vehicle comprising: one or more 48V batteries; an inverter connected to the 48V batteries in order to convert the output of the 48V batteries to an AC output for use powering AC devices in the vehicle; a transformer having a 48V input connected to the 48V batteries to convert to a 12V output for powering 12V devices in the vehicle; and a 12V battery connected to provide power to 12V devices in the vehicle when power is not available at the 12V output of the transformer.
2. A power system in accordance with claim 1, wherein the transformer comprises a dual way transformer such that the 12V batteries provide 48V through the transformer to charge the 48V batteries when mains power is not available.
3. A power system in accordance with claim 2, wherein the 12V batteries are provided with an alternator connection for connection to an alternator of a towing vehicle such that, when the towing vehicle is in use, the 12V batteries are charged by the alternator via the alternator connection and the 48V batteries are charged via the dual way transformer.
4. A power system in accordance with claim 3, wherein an AC contactor is provided between an AC input and the AC output of the inverter such that, in the event the inverter were to be faulty or otherwise disconnected, AC power is provided to the AC devices within the vehicle if mains power is available.
5. A power system in accordance with any one of the preceding claims, wherein the inverter senses current draw from the mains supply and includes a load limit, such that when the inverter detects that the load limit has been reached, the inverter draws any additional power required within the vehicle from the 48V batteries.
6. A power system in accordance with any one of the preceding claims, wherein a control unit is provided connected by communication lines to the batteries, the transformer and the inverter to control activation or shut down of the batteries, the transformer and the inverter.
7. A power system in accordance with claim 6, wherein sensors are provided connected to components of the power system for detecting voltage levels, current levels and temperature such that the control unit can shut down components where the sensed voltage, current or temperature are not within acceptable limits.
8. A power system in accordance with claim 7, wherein one more distributors are provided having a plurality of distribution ports and where one or the distributors includes the sensors.
Harvok Pty Ltd by its Patent Attorneys Armour IP
AU2021100401A 2021-01-22 2021-01-22 Power System for a Vehicle Active AU2021100401A4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2021100401A AU2021100401A4 (en) 2021-01-22 2021-01-22 Power System for a Vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU2021100401A AU2021100401A4 (en) 2021-01-22 2021-01-22 Power System for a Vehicle

Publications (1)

Publication Number Publication Date
AU2021100401A4 true AU2021100401A4 (en) 2021-04-15

Family

ID=75397202

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2021100401A Active AU2021100401A4 (en) 2021-01-22 2021-01-22 Power System for a Vehicle

Country Status (1)

Country Link
AU (1) AU2021100401A4 (en)

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Owner name: SUNBASE PTY LTD

Free format text: FORMER OWNER(S): HARVOK PTY LTD