Battery charger

• US 5,767,661 A
• Filed: 03/21/1997
• Issued: 06/16/1998
• Est. Priority Date: 03/21/1997
• Status: Expired due to Fees

• Current Assignee: Carlos Williams
• Original Assignee: Carlos Williams
• Inventors: Williams, Carlos
• Primary Examiner(s): Berhane, Adolf
• Assistant Examiner(s): TOATLEY, GREGORY J
• Application Number:
  US08/822,494
• Time in Patent Office: 452 Days
• Field of Search: 320/48, 320/36, 320/32, 320/30, 320/40, 320/150, 320/152, 320/DIG. 10, 320/DIG. 11, 320/DIG. 12, 320/DIG. 13, 324/429, 324/431, 324/433, 429/61, 429/90, 340/636
• US Class Current: 320/152
• CPC Class Codes: G01R 31/378 specially adapted for the type of battery or accumulator
• CPC Class Codes: H02J 7/00309 Overheat or overtemperature protection
• CPC Class Codes: H02J 7/0034 using reverse polarity correcting or protecting circuits mechanical means of polarity protection H02J7/0045
• CPC Class Codes: H02J 7/00712 the cycle being controlled or terminated in response to electric parameters
• CPC Class Codes: Y10S 320/10 Nonbattery load controls charging

Abstract

An emergency stop warning system for an automobile with a hydraulically operated brake system and that includes an electric power supply, a warning sound emitting electrically operated horn connected with the power supply, a normally open fluid pressure actuated switch electrically connected between the power supply and the horn and hydraulically connected with the brake system; that the hydraulically actuated switch is set to close and cause the horn to sound when fluid pressure in the braking system is increased to cause the automobile to decelerate and stop at a faster than normal rate.

Claims

1. A storage battery charger including a high voltage AC power supply, a normally open power control switch in the power supply, a step-down transformer with an elongated primary winding connected with the power supply and including first and second secondary windings;

a full wave rectifier including a pair of SCRs the anodes of which are connected with opposite related ends of the first secondary winding;

a first current line extending between and connected with the center of the primary secondary winding and the anode terminal of a battery;

a shunt in the first current line to effect reading current flowing through that line;

a second current line extending between and connected with the rectifier and the cathode terminal of the battery;

a conductor line extending between and connected with the first and second current lines;

a load resistor connected in the conductor line;

a normally open relay switch connected in the conductor line between the resistor and the first current line;

a battery temperature sensor device at a terminal of the battery;

a controller including an analog to digital converter, a programmed microprocessor with a related memory bank;

power supply lines connecting the controller with the second secondary winding;

a plurality voltage conducting lines extending connected for the controller and each of which is connected with a related anode or gate of the SCRs, the shunt, the relay switch, the conductor line between the resistor and the relay switch, the battery anode terminal, the battery cathode terminal and the temperature sensor device;

a plurality of signal emitting devices connected with the controller;

the programmed microprocessor operates to cause the charger to first direct a first test current to the battery;

to next read and record in its memory bank, a first load voltage;

to next read and record in its memory first bank recovery voltages;

to next direct and cause the charger to direct a second test current to the battery;

to next read and record in its memory a second load voltage;

to next read and record in its memory second recovery voltages;

read and record in its memory the battery temperature; and

, read and record in its memory charging current voltages;

temperature and voltage reference data that define the temperature and voltages parameters for rechargeable batteries is stored in the memory bank;

the microprocessor operates to compare the read and recorded temperature and voltages with the reference data and operates to stop programmed operation of the charger and energize a signal emitting device when the read and recorded temperature and voltages are outside parameters defined by the reference data when programmed operation of the charger is not stopped the microprocessor next causes the rectifier to function to conduct a recharging current through the battery.

2. The battery charger set forth in claim 1 wherein the programmed microprocessor operates to stop the functioning of the charger and to energize a signal emitting device when the first and second current lines are improperly-connected with the terminals of the battery.

3. The battery charger set set forth in claim 1 wherein the programmed microprocessor operates to stop the functioning of the charger and to energize a signal emitting device when no voltage from the battery is read.

4. The battery charger set forth in claim 1 wherein the programmed microprocessor operates to stop the functioning of the charger and to energize a signal emitting devices when the first and second current lines are improperly-connected with the terminals of the battery when no battery voltage is read.

5. The battery charger set forth in claim 1 wherein the programmed microprocessor operates to calculate the maximum amperage of a charging current that the battery can effectively accept and causes the rectifier to operate to direct a charging current at the calculated amperage to the battery.

6. The battery charger set forth in claim 1 wherein the programmed microprocessor operates to stop the functioning of the charger and to energize signal emitting devices when the first and second current lines are improperly-connected with the terminals of the battery;

calculates the maximum amperage of a charging current that the battery can effectively accept; and

causes the rectifier to operate to direct a charging current at the calculated amperage to the battery.

7. The battery charger set forth in claim 1 wherein the programmed microprocessor operates to stop functioning of the charger and to energize signal emitting devices when no voltage from the battery is read;

operates to calculate the maximum amperage of a charging current the battery can effectively accept; and

operates and causes the rectifier to operate and direct a charging current at the the calculated amperage to the battery.

8. The battery charger set forth in claim 1 wherein the programmed microprocessor operates to stop the functioning of the charger and to energize a signal emitting devices when the first and second current lines are improperly-connected with the terminals of the battery when no battery voltage is read;

calculates the maximum amperage of a charging current that the battery can effectively accept and causes the rectifier to operate to direct a charging current of the calculated amperage to the battery.

9. The battery charger set forth in claim 1 wherein the programmed microprocessor operates to monitor changes of voltage of the charging current to the battery and operates to stop the functioning of the charger and to energize signal emitting devices when the change of voltage of the charging current reaches a value included in the stored reference data.

10. The battery charger set forth in claim 1 wherein the programmed microprocessor operates to stop functioning of the charger and to energize signal emitting devices when the first and second current lines are improperly-connected with the terminals of the battery;

monitors changes of voltage of the charging current to the battery and operates to stop functioning of the charger and to energize signal emitting devices when the change of voltage of the charging current reaches a value included in the stored reference data.

11. The battery charger set forth in claim 1 wherein the programmed microprocessor operates to stop functioning of the charger and to energize a signal emitting device when no voltage from the battery is read;

monitors changes of voltage in the charging current to the battery;

functions to stop the functioning of the charger and to energize signal emitting devices when the change of voltage of the charging current reaches a value included in the stored reference data.

12. The battery charger set forth in claim 1 wherein the programmed microprocessor operates to stop functioning of the charger and to energize a single emitting device when the first and second current lines are improperly-connected with the terminals of the battery, operates to stop operation of the charger and to energize a signal emitting device when no battery voltage is read, operates to monitor changes of voltage of the charging current to the battery and to stop operation of the charger and to energize a signal emitting devices when the change of voltage of the charging current reaches a value that is included in the stored reference data.

13. The battery charger set forth in claim 1 wherein the programmed microprocessor operates to monitor changes of voltage in the charging current to the battery and operates to stop functioning of the charger and to energize signal emitting devices when the change of voltage of the charging current reaches a value included in the stored reference data.

14. The battery charger set forth in claim 1 wherein the programmed microprocessor operates to stop functioning of the charger and to energize a signal emitting device when the first and second current lines are improperly-connected wit the terminals of the battery, calculates the maximum amperage of a charging current that the battery can effectively accept and and causes the rectifier to function to direct a charging current at the calculated amperage to the battery;

and wherein the programmed microprocessor operates to monitor changes of voltage in the charging current to the battery and stops operation of the charger and energizes a signal emitting devices when the change of voltage of the charging current reaches a value included in the recorded reference data.

15. The battery charger set forth in claim 1 wherein the programmed microprocessor operates to stop functioning of the charger and to energize a signal emitting device when no voltage from the batter is read calculates the maximum amperage of a charging current that the battery can effectively accept and causes the rectifier to operate to direct the charging current to the battery at the calculated amperage and, wherein the programmed microprocessor operates to monitor changes of the charging current to the battery and to stop operations of the charger and to energize signal emitting devices when the change of voltage of the charging current voltage reaches a value included in the stored reference data.

16. The battery charger set forth in claim 1 wherein the programmed microprocessor operates to stop functioning of the charger and to energize a single emitting device when the first and second current lines are improperly-connected wit the terminals of the battery stops operation of the charger and energizes signal emitting devices when the change of voltage of the charging current reaches a value included in the stored reference data causes the battery to discharge after the charging current is stopped to eliminate undesired polarization therein.

17. The battery charger set forth in claim 1 wherein the controller is programmed and functions to monitor the change of voltage of the charging current to the battery and functions to stop programmed functioning of the charger and to energize signal emitting devices when the change of voltage of the charging current reaches a value set in the reference voltage data;

and, wherein the controller directs and causes the battery to discharge after the charging current is stopped to eliminate undesired polarization therein.

18. The battery charger set forth in claim 1 wherein the controller is programmed and functions to stop programmed functioning of the charger and to energize a signal emitting device when the first and second current lines are improperly connected with the terminals of the battery;

wherein the controller is programmed and functions to stop the programmed functioning of the charger and to energize a signal emitting device when no battery voltage is read;

the controller program functions to calculate the maximum amperage of a charging current that the battery can effectively accept and directs and causes the rectifier to function to direct the calculated charging current to the battery;

wherein the controller is programmed and functions to monitor the change of voltage of the charging current to the battery and functions to stop programmed functioning of the charger and to energize signal emitting devices when the change voltage of the current of charging reaches a value set in the reference voltage data; and

, wherein the controller is programmed to direct and cause the battery to discharge after the charging current is stopped to eliminate undesired polarization therein.