Method for ultra-rapidly charging a rechargeable battery using multi-mode regulation in a vehicular recharging system

• US 5,986,430 A
• Filed: 07/06/1998
• Issued: 11/16/1999
• Est. Priority Date: 07/06/1998
• Status: Expired due to Term

• Current Assignee: Motorola Solutions, Inc.
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Fernandez, Jose Maria, Coapstick, Ronald Scot
• Primary Examiner(s): Wong, Peter S.
• Assistant Examiner(s): TOATLEY, GREGORY J
• Application Number:
  US09/110,339
• Time in Patent Office: 498 Days
• Field of Search: 320/137, 320/156, 320/152, 320/162, 320/DIG. 12, 320/106
• US Class Current: 320/106
• CPC Class Codes: H02J 7/00036 Charger exchanging data with battery
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries
• CPC Class Codes: H02J 7/342 The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging with circuits for polarity protection H02J7/0034
• CPC Class Codes: Y10S 320/21 State of charge of battery

Abstract

A method (200) for charging a nickel cadmium, nickel-metal hydride or lithium-ion battery cell using an ultra-fast vehicular charging system includes determining (201, 203, 205) manufacturer identity, ultra-fast battery charging capability and battery capacity from the battery system to provide (207) battery type information. A direct current (DC) input voltage in a predetermined input supply voltage range is converted (211) to a an output supply current in a predetermined output voltage range. The predetermined output supply voltage is supplied (217) to the battery cell for recharging while a number of battery parameters are monitored (219) such as the battery cell voltage, charging current and temperature of the battery cell to generate monitoring information. Finally the output supply voltage and the charge current supplied to the battery cell are precisely controlled (223) based upon the battery type information and battery monitoring information in order to safely charge the battery within one-half hours time.

Claims

1. A method for charging a nickel cadmium, nickel-metal hydride or lithium-ion battery cell using an ultra-fast vehicular charging system comprising the steps of:

determining manufacturer identity, ultra-fast battery charging capability and battery capacity from the battery system to provide battery type information;

converting a direct current (DC) input voltage in a predetermined input supply voltage range to a an output supply current in a predetermined output voltage range;

supplying the predetermined output supply voltage to the battery cell for recharging;

monitoring the battery cell voltage, charging current and temperature of the battery cell and proving monitoring information therefrom;

controlling the output supply voltage and the charge current supplied to the battery cell based upon the battery type information and battery monitoring information.

2. A method as in claim 1, wherein the battery cell is recharged using a standard recharging protocol if the battery cell is not recognized as an ultra-fast charge battery.

3. A method as in claim 1, further including the step of:

distributing a precision supply voltage to the ultra-fast vehicular charging system for providing the output voltage to the battery cell within approximately 25 millivolts DC.

4. A method as in claim 1, wherein the step of disturbing a precision supply voltage derives a distribution input voltage from either the input supply voltage or the output supply voltage for improving charger efficiency.

5. A method as in claim 1, wherein the DC input voltage is in a range substantially between 11 volts and 35 volts.

6. A method as in claim 1, wherein the DC output voltage range is substantially between 4 volts and 10 volts.

7. A method as in claim 1, wherein the battery cell is recharged in less than 1/2 hours time.

8. A method of charging either a nickel cadmium, nickel-metal hydride or a lithium-ion rechargeable battery cell using an ultra-fast vehicular battery charger comprising the steps of:

determining a battery type information of the rechargeable battery cell based upon battery chemistry and battery capacity;

converting an input direct current (DC) voltage in a range between 11 volts and 35 volts to an output DC voltage in a range from 4 volts to 10 volts;

supplying a predetermined output voltage within 25 millivolts resolution of the predetermined value to the rechargeable battery cell based upon battery type information;

monitoring the voltage, charging current and temperature of the rechargeable battery cell to provide monitoring information;

dynamically controlling the predetermined output voltage based upon the monitoring information.

9. A method of charging as in claim 8, wherein the battery type information includes manufacturer identity, ultra-fast battery charging capability and battery capacity.

10. A method of charging as in claim 8, wherein the rechargeable battery cell is recharged in less than 1/2 hours time.

11. A method of charging as in claim 8, further comprising the step of;

distributing a precision DC voltage based upon a distribution voltage supplied from either the input DC voltage or the output DC voltage to a controller circuit for supping a predetermine output voltage and current having a wide dynamic range to the rechargeable battery cell.

12. A method of charging as in claim 11, wherein the input DC voltage range is 11 voltages DC to 35 volts DC.

13. A method of charging as in claim 11, wherein the output DC voltage range is 4 volts DC to 10 volts DC in a range from 20 milliamps to 1.8 amps output current.

14. A method of supplying a predetermined charging voltage and charging current having a wide dynamic range to at least one rechargeable battery cell using a ultra-fast vehicular battery charging system comprising the steps of:

determining manufacturer identity of the battery cell;

determining whether the rechargeable battery cell is either nickel cadmium, nickel medal hydride or lithium-ion chemistry type;

determining the capacity of the battery cell;

determining battery information based upon the manufacturer identity, chemistry type and battery capacity;

supplying the battery information to a charging controller;

converting an input direct current (DC) voltage from an input range of 11 volts to 35 volts to an output DC voltage in a range from 4 volts to 10 volts;

selecting the output DC voltage based upon battery information from the charging controller;

distributing a precision supply voltage to the charging controller for providing a substantially wide dynamic voltage range to the rechargeable battery cell;

supplying the output DC voltage to the rechargeable battery cell within 25 millivolts resolution of a predetermined voltage value;

monitoring the rechargeable battery cell voltage, charging current and temperature to provide monitored information;

supplying the monitored information to the charging controller;

dynamically altering the output DC voltage to the rechargeable battery cell to provide recharging of the cell in less than 1/2 hours time.

15. A method of supplying a predetermined charging voltage as in claim 14, further including the step of:

charging the battery cell at a standard rate when the manufacturer identity indicates that the battery cell is not an ultra-fast charge battery.