WO1994010736A1 - Electrical power supply for motor vehicles - Google Patents

Electrical power supply for motor vehicles Download PDF

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Publication number
WO1994010736A1
WO1994010736A1 PCT/CA1992/000480 CA9200480W WO9410736A1 WO 1994010736 A1 WO1994010736 A1 WO 1994010736A1 CA 9200480 W CA9200480 W CA 9200480W WO 9410736 A1 WO9410736 A1 WO 9410736A1
Authority
WO
WIPO (PCT)
Prior art keywords
alternator
power supply
electrical power
outputs
welding
Prior art date
Application number
PCT/CA1992/000480
Other languages
French (fr)
Inventor
Victor Migdal
Original Assignee
Sea Phoenix International Trading Ltd.
Faig, Yehiam
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 Sea Phoenix International Trading Ltd., Faig, Yehiam filed Critical Sea Phoenix International Trading Ltd.
Priority to PCT/CA1992/000480 priority Critical patent/WO1994010736A1/en
Priority to AU28722/92A priority patent/AU2872292A/en
Publication of WO1994010736A1 publication Critical patent/WO1994010736A1/en

Links

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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1438—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle in combination with power supplies for loads other than 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
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention relates to DC power supplies generally and more particularly to power supplies suitable for retrofit in place of a conventional vehicle alternator.
  • the present invention seeks to provide an improved electrical power supply for- otor vehicles.
  • an improved electrical power supply for motor vehicles including an alternator arranged to receive a rotational driving input from a vehicle engine and control and switching apparatus operative to automatically switch from operation in an alternator mode of operation to operation in a generator mode of operation in response to disconnection of the alternator from a vehicle battery.
  • an improved electrical power supply for motor vehicles including an alternator arranged to receive a rotational driving input from a vehicle engine and control and switching apparatus operative in association with the alternator to provide a floating mains voltage output.
  • the control and switching apparatus comprises only passive components.
  • an improved electrical power supply for motor vehicles including an alternator arranged to receive a rotational driving input from a vehicle engine and control and switching apparatus operative in association with the alternator and including apparatus for providing a welding output and including a plurality of diodes arranged in parallel pairs.
  • an improved electrical power supply for motor vehicles including an alternator arranged to receive a rotational driving input from a vehicle engine and control and switching apparatus operative in association with the alternator and a driver warning light to indicate to a vehicle operator when the alternator is disconnected from the vehicle battery.
  • an improved electrical power supply for motor vehicles including an alternator arranged to receive a rotational driving input from a vehicle engine and control and switching apparatus operative in association with the alternator, the alternator and the control and switching apparatus including separate means for providing line voltage outputs and means for providing low voltage, high amperage outputs for welding or battery charging, the separate means being operable at the same time to permit welding and provision of line voltage outputs.
  • Fig. 1 is a generalized block diagram illustration of a power supply constructed and operative in, accordance with a preferred embodiment of the present invention
  • Figs. 2/1 and 2/2 together are a detailed schematic illustration of the power supply of Fig. 1.
  • Figs. 1, 2/1 and 2/2 illustrate a power supply constructed and operative in accordance with a preferred embodiment of the present invention.
  • the power supply comprises an alternator 10, having a single rotor 12 and associated regulator 14, such as an 90 Amp. alternator commercially available from Bosch of Germany, which is modified as indicated in Figs. 2/1 and 2/2, and as described hereinbelow.
  • stator coil of the conventional alternator is replaced by a pair of stator coils 16 and 18 wound on the original core, both of which are inductively driven by rotor 12.
  • the two stator coils 16 and 18 are separated and inductively and electrically insulated from each other, such that the output of stator coils 18 "floats" independently of the output of the vehicle battery and chassis or other fixed voltage source.
  • regulator control circuitry 20 and rectifier bridge circuitry 22, as well as charging indication lamp driver circuitry 24 is Associated with alternator 10 and disposed in a regulator and junction box 19 Associated with alternator 10 and disposed in a regulator and junction box 19 .
  • each of the three windings 30, 32 and 34 of stator 16 is coupled to a pair of pairs of diodes 36, which are coupled together to provide respective plus and minus DC outputs at respective positive and negative socket terminals A and C respectively.
  • Socket terminals A and C are employed for welding and battery charging.
  • the vehicle battery 38 is coupled to terminal A by means of a quick coupling connector B, such as connector elements available under catalog numbers BN 511.01.003 and BN 511.0006 of Alexander Binzel of Germany.
  • charging indication lamp driver circuitry 24 when the vehicle battery 38 is decoupled from terminal A, charging indication lamp driver circuitry 24 is operative to cause illumination of a lamp 40 indicating that battery 38 is not being charged. When the positive terminal of battery 38 is connected to terminal A, the lamp 40 is no longer illuminated.
  • Circuitry 24 comprises a relay 42, which receives an AC input from coil 30 of stator 16 via a diode 44 when battery 38 is coupled to terminal A.
  • This relay in the absence of the AC input, i.e. when the battery 38 is not coupled to terminal A, and when the vehicle engine is operating, driving the alternator, positions a switch 46, as shown in Fig. 2/1 to couple one side of lamp 40 to ground. In this case, when the vehicle ignition switch 48 is closed, causing a relay 47 to close a switch 49, providing battery voltage to the other side of lamp 40 the lamp is illuminated, warning the operator that the battery 38 is not coupled.
  • Regulator control circuitry 20 includes a relay 50 which also receives an input from coil 36 of stator 16 via a diode 51 and is operative to control the position of a switch 52, such that when battery 38 is decoupled from terminal A, switch 52 is open, as illustrated in Fig. 2/1, thus coupling the voltage of battery 38 to the regulator 14 only via a diode 54, such that the output of stator coils 18 cannot charge the battery 38.
  • stator coils 18 are each coupled to a primary 60 of a transformer 62, forming part of regulator control circuitry 20.
  • the corresponding secondaries 64 are coupled via a diode bridge 66 to regulator 14, in order to provide a voltage feedback input to the regulator 14, when the vehicle battery is disconnected from terminal A. This mode of operation is termed the
  • transformer 62 is operative in association with diode bridge 66 to provide a maintenance current to the rotor 12, thereby eliminating a drain on the vehicle battery 38.
  • the stator coils 18 are each connected via suitable diodes 68 to output terminals E and F, which are employed to provide DC line voltages. Both the stator coils 18 and the primaries 60 are selected to match the desired output voltage at terminals E and F, for example any one of 110V, 220V or 240V DC.

Abstract

An electrical power supply for motor vehicles including an alternator arranged to receive a rotational driving input from a vehicle engine and control and switching means operative to automatically switch from operation in an alternator mode of operation to operation in a generator mode of operation in response to disconnection of the alternator from a vehicle battery.

Description

ELECTRICAL POWER SUPPLY FOR MOTOR VEHICLES
The present invention relates to DC power supplies generally and more particularly to power supplies suitable for retrofit in place of a conventional vehicle alternator.
There exist a wide variety of DC power supplies useful in association with vehicles. Examples of such devices are described in the following U.S. Patents: 4,853,557; 4,599,687; 3,316,416; 4,330,715; 4,705,934; 3,899,652; 3,894,242; 4,100,474 and 3, 770, 976.
The present invention seeks to provide an improved electrical power supply for- otor vehicles.
There is thus provided in accordance with a preferred embodiment of the present invention an improved electrical power supply for motor vehicles including an alternator arranged to receive a rotational driving input from a vehicle engine and control and switching apparatus operative to automatically switch from operation in an alternator mode of operation to operation in a generator mode of operation in response to disconnection of the alternator from a vehicle battery.
Additionally in accordance with a preferred embodiment of the present invention there is provided an improved electrical power supply for motor vehicles including an alternator arranged to receive a rotational driving input from a vehicle engine and control and switching apparatus operative in association with the alternator to provide a floating mains voltage output. In accordance with a preferred embodiment of the invention, the control and switching apparatus comprises only passive components.
Further in accordance with a preferred embodiment of the present invention there is provided an improved electrical power supply for motor vehicles including an alternator arranged to receive a rotational driving input from a vehicle engine and control and switching apparatus operative in association with the alternator and including apparatus for providing a welding output and including a plurality of diodes arranged in parallel pairs.
Further in accordance with a preferred embodiment of the present invention there is provided an improved electrical power supply for motor vehicles including an alternator arranged to receive a rotational driving input from a vehicle engine and control and switching apparatus operative in association with the alternator and a driver warning light to indicate to a vehicle operator when the alternator is disconnected from the vehicle battery.
Additionally in accordance with a preferred embodiment of the present invention there is provided an improved electrical power supply for motor vehicles including an alternator arranged to receive a rotational driving input from a vehicle engine and control and switching apparatus operative in association with the alternator, the alternator and the control and switching apparatus including separate means for providing line voltage outputs and means for providing low voltage, high amperage outputs for welding or battery charging, the separate means being operable at the same time to permit welding and provision of line voltage outputs.
The present invention will be understood and appreciated more fully from the following detailed description, taken in conjunction with the drawings in which:
Fig. 1 is a generalized block diagram illustration of a power supply constructed and operative in, accordance with a preferred embodiment of the present invention;
Figs. 2/1 and 2/2 together are a detailed schematic illustration of the power supply of Fig. 1.
Reference is now made to Figs. 1, 2/1 and 2/2, which illustrate a power supply constructed and operative in accordance with a preferred embodiment of the present invention. Generally speaking, the power supply comprises an alternator 10, having a single rotor 12 and associated regulator 14, such as an 90 Amp. alternator commercially available from Bosch of Germany, which is modified as indicated in Figs. 2/1 and 2/2, and as described hereinbelow.
As seen in Figs. 2/1 and 2/2, the single stator coil of the conventional alternator is replaced by a pair of stator coils 16 and 18 wound on the original core, both of which are inductively driven by rotor 12. The two stator coils 16 and 18 .are separated and inductively and electrically insulated from each other, such that the output of stator coils 18 "floats" independently of the output of the vehicle battery and chassis or other fixed voltage source. Associated with alternator 10 and disposed in a regulator and junction box 19 is regulator control circuitry 20 and rectifier bridge circuitry 22, as well as charging indication lamp driver circuitry 24.
As seen in Fig. 2/1, in accordance with a preferred embodiment of the present invention, each of the three windings 30, 32 and 34 of stator 16 is coupled to a pair of pairs of diodes 36, which are coupled together to provide respective plus and minus DC outputs at respective positive and negative socket terminals A and C respectively. Socket terminals A and C are employed for welding and battery charging. Normally the vehicle battery 38 is coupled to terminal A by means of a quick coupling connector B, such as connector elements available under catalog numbers BN 511.01.003 and BN 511.0006 of Alexander Binzel of Germany.
In accordance with a preferred embodiment of the present invention, when the vehicle battery 38 is decoupled from terminal A, charging indication lamp driver circuitry 24 is operative to cause illumination of a lamp 40 indicating that battery 38 is not being charged. When the positive terminal of battery 38 is connected to terminal A, the lamp 40 is no longer illuminated.
Circuitry 24 comprises a relay 42, which receives an AC input from coil 30 of stator 16 via a diode 44 when battery 38 is coupled to terminal A. This relay, in the absence of the AC input, i.e. when the battery 38 is not coupled to terminal A, and when the vehicle engine is operating, driving the alternator, positions a switch 46, as shown in Fig. 2/1 to couple one side of lamp 40 to ground. In this case, when the vehicle ignition switch 48 is closed, causing a relay 47 to close a switch 49, providing battery voltage to the other side of lamp 40 the lamp is illuminated, warning the operator that the battery 38 is not coupled.
Regulator control circuitry 20 includes a relay 50 which also receives an input from coil 36 of stator 16 via a diode 51 and is operative to control the position of a switch 52, such that when battery 38 is decoupled from terminal A, switch 52 is open, as illustrated in Fig. 2/1, thus coupling the voltage of battery 38 to the regulator 14 only via a diode 54, such that the output of stator coils 18 cannot charge the battery 38.
Turning now to Fig. 2/2 it is seen that the stator coils 18 are each coupled to a primary 60 of a transformer 62, forming part of regulator control circuitry 20. The corresponding secondaries 64 are coupled via a diode bridge 66 to regulator 14, in order to provide a voltage feedback input to the regulator 14, when the vehicle battery is disconnected from terminal A. This mode of operation is termed the
"generator" mode of operation. During the generator mode of operation, transformer 62 is operative in association with diode bridge 66 to provide a maintenance current to the rotor 12, thereby eliminating a drain on the vehicle battery 38.
Normally, when the power supply is operative in the generator mode, it is necessary to increase the engine revolutions. This may be achieved by any suitable mechanical or electrical apparatus.
When the vehicle battery 38 is coupled to terminal A, its voltage governs the operation of the regulator 14 as in ordinary alternators. This mode, of operation is termed the "alternator" mode of operation. In the "alternator" mode of operation, line voltage outputs are not provided at terminals E and F.
The stator coils 18 are each connected via suitable diodes 68 to output terminals E and F, which are employed to provide DC line voltages. Both the stator coils 18 and the primaries 60 are selected to match the desired output voltage at terminals E and F, for example any one of 110V, 220V or 240V DC.
It will be appreciated by persons skilled in the art that the present invention is not limited by what has been particularly shown and described hereinabove. Rather the scope of the invention is defined only by the claims which follow:

Claims

Claims
1. An electrical power supply for motor vehicles comprising an alternator arranged to receive a rotational driving input from a vehicle engine and control and switching means operative to automatically switch from operation in an alternator mode of operation to operation in a generator mode of operation in response to disconnection of the alternator from a vehicle battery.
2. An electrical power supply for motor vehicles- comprising an alternator arranged to receive a rotational driving input from a vehicle engine and control and switching means operative in association with the alternator to provide a floating mains voltage output.
3. An electrical power supply according to claim 1 and wherein said control and switching means comprises only passive components.
4. An electrical power supply according to claim 2 and wherein said control and switching means comprises only passive components.
5. An electrical power supply for motor vehicles including an alternator arranged to receive a rotational driving input from a vehicle engine and control and switching means operative in association with the alternator and including means for providing a welding output and including a plurality of diodes arranged in parallel pairs.
6. An electrical power supply for motor vehicles including an alternator arranged to receive a rotational driving input from a vehicle engine and control and switching means operative in association with the alternator and a driver warning light to indicate to a vehicle operator when the alternator is disconnected from a vehicle battery.
7. An electrical power supply for motor vehicles including an alternator arranged to receive a rotational driving input from a vehicle engine and control and switching apparatus operative in association with the alternator, the alternator and the control and switching means including separate means for providing line voltage outputs and means for providing low voltage, high amperage outputs for welding or battery charging, the separate means being operable at the same time to permit welding and provision of line voltage outputs.
8. An electrical power supply according to claim 1 and wherein said switching means is operative in association with the alternator to provide a floating mains voltage output.
9. An electrical power supply according to claim 1 and also comprising means for providing a welding output including a plurality of diodes arranged in parallel pairs.
10. An electrical power supply according to claim 2 also comprising means for providing a welding output including a plurality of diodes arranged in parallel: pairs.
11. An electrical power supply according to claim also comprising a driver warning light to indicate to a vehicle operator when the alternator is disconnected from a battery.
12. An electrical power supply according to claim 2 also comprising a driver warning light to indicate to a operator when the alternator is disconnected from a battery.
13. An electrical power supply according to claim 3 and also comprising a driver warning light to indicate to a vehicle operator when the alternator is disconnected from a vehicle battery.
14. An electrical power supply according to claim 4 and also comprising a driver warning light to indicate to a vehicle operator when the alternator is disconnected from a vehicle battery.
15. An electrical power supply according to claim 5 also comprising a driver warning light to indicate to a vehicle operator when the alternator is disconnected from a battery.
16. An electrical power supply according to claim 1 also including separate means for providing line voltage outputs and means for providing low voltage, high amperage outputs for welding or battery charging, the separate means being operable at the same time to permit welding and provision of line voltage outputs.
17. An electrical power supply according to claim 2 also including separate means for providing line voltage outputs and means for providing low voltage, high amperage outputs for welding or battery charging, the separate means being operable at the same time to permit welding and provision of line outputs.
18. An electrical power supply according to claim 5 and also including separate means for providing line voltage outputs and means for providing low voltage, high amperage outputs for welding or battery charging, the separate means being operable at the same time to permit welding and provision of line voltage outputs.
19. An electrical power supply according to claim 6 and also including separate means for providing line voltage outputs and means for providing low voltage, high amperage outputs for welding or battery charging, the separate means being operable at the same time to permit welding and provision of line voltage outputs.
20. An electrical power supply for motor vehicles including an alternator arranged to receive a rotational driving input from a vehicle engine and control and switching apparatus operative in association with the alternator, the alternator and the control and switching means including separate means for providing line voltage outputs and means for providing low voltage, high amperage outputs for welding or battery charging, the alternator including a single regulator operative with both the means for providing line voltage outputs and the means for providing low voltage, high amperage outputs.
PCT/CA1992/000480 1992-11-05 1992-11-05 Electrical power supply for motor vehicles WO1994010736A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CA1992/000480 WO1994010736A1 (en) 1992-11-05 1992-11-05 Electrical power supply for motor vehicles
AU28722/92A AU2872292A (en) 1992-11-05 1992-11-05 Electrical power supply for motor vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CA1992/000480 WO1994010736A1 (en) 1992-11-05 1992-11-05 Electrical power supply for motor vehicles

Publications (1)

Publication Number Publication Date
WO1994010736A1 true WO1994010736A1 (en) 1994-05-11

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PCT/CA1992/000480 WO1994010736A1 (en) 1992-11-05 1992-11-05 Electrical power supply for motor vehicles

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WO (1) WO1994010736A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6833119B1 (en) 1999-02-24 2004-12-21 Accentus Plc Vehicle power supply system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770976A (en) * 1972-08-24 1973-11-06 Ralls R System for increasing the output of a multi-phase rectified rotary field system
US4330715A (en) * 1980-02-15 1982-05-18 Stroud Lebern W Automatic feedback system
WO1984003595A1 (en) * 1983-03-09 1984-09-13 Ayr Pty Ltd Electrical power supply for a motor vehicle
US4853557A (en) * 1988-05-17 1989-08-01 Meier Werner A Automotive alternator power generator for welding or use of power tools
EP0370468A1 (en) * 1988-11-21 1990-05-30 Hitachi, Ltd. Electric power supply system for automobile
EP0379357A2 (en) * 1989-01-18 1990-07-25 Hitachi, Ltd. Power supply device for vehicle
US5066866A (en) * 1989-12-26 1991-11-19 Hallidy William M Power converter system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770976A (en) * 1972-08-24 1973-11-06 Ralls R System for increasing the output of a multi-phase rectified rotary field system
US4330715A (en) * 1980-02-15 1982-05-18 Stroud Lebern W Automatic feedback system
WO1984003595A1 (en) * 1983-03-09 1984-09-13 Ayr Pty Ltd Electrical power supply for a motor vehicle
US4853557A (en) * 1988-05-17 1989-08-01 Meier Werner A Automotive alternator power generator for welding or use of power tools
EP0370468A1 (en) * 1988-11-21 1990-05-30 Hitachi, Ltd. Electric power supply system for automobile
EP0379357A2 (en) * 1989-01-18 1990-07-25 Hitachi, Ltd. Power supply device for vehicle
US5066866A (en) * 1989-12-26 1991-11-19 Hallidy William M Power converter system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PHILIPS APPLICATION NOTE 8 February 1968, EINDHOVEN page 4 'PARALLEL CONNECTION OF RECTIFIER DIODES' *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6833119B1 (en) 1999-02-24 2004-12-21 Accentus Plc Vehicle power supply system

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Publication number Publication date
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