High-efficiency charging and regulating system

• US 4,852,540 A
• Filed: 05/09/1988
• Issued: 08/01/1989
• Est. Priority Date: 05/09/1988
• Status: Expired due to Fees

• Current Assignee: F & P Manufacturing Incorporated
• Original Assignee: F & P Manufacturing Incorporated
• Inventors: Safranek, Edward J.
• Primary Examiner(s): Argenbright, Tony M.
• Application Number:
  US07/191,877
• Time in Patent Office: 449 Days
• Field of Search: 123/147 A, 123/149 D, 123/599, 123/602, 320/39, 320/40, 320/59, 320/61, 320/DIG. 2, 322/89, 322/94
• US Class Current: 123/599
• CPC Class Codes: F02B 1/04 with fuel-air mixture admission into cylinder
• CPC Class Codes: F02P 1/02 the generator rotor being characterised by forming part of the engine flywheel
• CPC Class Codes: F02P 1/086 for generating sparks by discharging a capacitor into a coil circuit
• CPC Class Codes: F02P 11/025 Shortening the ignition when the engine is stopped to prevent damage to the coil F02P3/0556
• CPC Class Codes: H02J 7/1438 in combination with power supplies for loads other than batteries
• CPC Class Codes: H02J 7/1492 by means of controlling devices between the generator output and the battery
• CPC Class Codes: H02K 21/222 Flywheel magnetos
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A high efficiency charging and regulating system charges a battery and regulates a voltage delivered to the battery. An alternator having a rotor with at least one magnet thereon and a stator in close proximity to the rotor has at least one alternator coil and at least one power coil. A regulating and charging device connects an output of the alternator coil to a system battery for delivering a regulated voltage to the system battery for charging thereof. Preferably, the charging and regulating means comprises a full wave SCR rectifier, gate inputs of which are controlled by voltage derived from the power coil.

Claims

1. A charging and regulating system for charging a battery and regulating a voltage delivered to the battery, comprising:

an alternator having a rotor with at least one magnet thereon, and a stator in close proximity to the rotor having at least one alternator coil and at least one power coil;

control means connecting an output of the alternator coil to the system battery for delivering a regulated voltage to the system battery for charging thereof, said control means having a control input;

voltage regulating means connected to the control input for creating a control voltage; and

means for connecting a voltage output by the power coil to the voltage regulating means for use in creating said control voltage connected to the control input of the control means.

2. A system according to claim 1 wherein the control means comprises a charging circuit formed of a full wave rectifier.

3. A system according to claim 2 wherein the full wave rectifier comprises a centertap full wave rectifier and wherein at least two SCRs are provided whose gate inputs are connected to said control input.

4. A system according to claim 1 wherein said connecting means comprises a shunt voltage regulator connected in series with a full wave rectifier.

5. A system according to claim 1 wherein said voltage regulating control means has SCR rectifiers with respective gates, and said means comprises a gate control circuit having a first input connected to said connecting means, and a second input connected to receive a reference voltage indicative of system battery voltage

6. A system according to claim 5 wherein a voltage sense means is connected to sense system battery voltage and has an output at which said reference voltage is connected to said gate control circuit second input.

7. A system according to claim 1 wherein said voltage regulating means includes means for turning off the control means if a voltage of the system battery is interrupted so that alternator coil voltage is not applied to the system battery.

8. A system according to claim 1 wherein the voltage regulating means includes means for preventing system battery drain by the voltage regulating means when an engine in the vehicle is not running and the alternator coils are not outputting a voltage.

9. A system according to claim 1 wherein an ignition timing circuit is provided and means are provided for connecting voltage from the power coil to the ignition timing circuit.

10. A system according to claim 8 wherein said ignition timing circuit includes a bipolar Hall effect transducer means having an input connected to the power coil.

11. A system according to claim 1 wherein said control means has an SCR connected in series with each end of the alternator coil and respective gates connected to the control input of the control means.

12. A system according to claim 11 wherein zero cross enable means are provided to insure switching of the SCRs when a voltage waveform applied to the SCRs is crossing a zero reference line.

13. An electrical charging and regulating system, comprising:

an electrical power alternator having alternator coils and a power coil independent of the alternator coils;

a system battery connected in parallel to an electrical system associated with the battery;

a full wave charging means connecting an output of the alternator coils to the system battery for charging the system battery and for regulating voltage delivered to the electrical system; and

a voltage regulating means connected to control the charging means, and having a first input connected to the system battery and a second input connected to the power coil.

14. A system according to claim 13 wherein the charging means comprises a full wave centertap rectifier having only two SCR control devices each having a control input connected to the voltage regulating means.

15. A charging system for use with an engine having a battery associated therewith, comprising:

a rotor with an associated stator assembly, the stator assembly having at least one alternator coil and at least one power coil;

charging means connecting an output of the alternator coil to the battery for charging thereof; and

a voltage regulating means for supplying a control voltage to the charging means based on battery voltage and based on an output voltage of the power coil, said power coil being separated from the alternator coil.

16. A system according to claim 15 wherein the charging means comprises a full wave rectifier formed of at least two SCRs and having gates of the SCRs connected to the voltage regulating means.

17. A system according to claim 15 wherein the charging means comprises a full wave rectifier having at least first and second SCRs whose gates are controlled by the voltage regulating means, and wherein a voltage regulator is connected to an output of the power coil, and a full wave rectifier is connected between the voltage regulator and the voltage regulating means.

18. A system according to claim 15 wherein the stator assembly also has a charge coil connecting to an ignition voltage generating means for generating a voltage for a spark plug of the engine, and an ignition timing means is provided which is also connected to the power coil at an input and at an output controls the ignition voltage generating means.

19. A system according to claim 18 wherein the ignition timing mean comprises Hall effect device means for sensing a position of the rotor.

20. A charging and regulating system for charging a battery and regulating a voltage delivered to the battery, comprising:

an alternator having a rotor with at least one magnet thereon, and a stator in close proximity to the rotor having at least one alternator coil and at least one power coil;

charging and regulating means connecting an output of the alternator coil to the battery for delivering a regulated voltage to the battery for charging thereof, said charging and regulating means having a first input connected to said power coil and a second input connected to the battery.