Battery charging apparatus having battery attachment sections for charging batteries at different rates or timing

• US 5,955,868 A
• Filed: 03/19/1998
• Issued: 09/21/1999
• Est. Priority Date: 03/21/1997
• Status: Expired due to Fees

• Current Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Kaite, Osamu, Kokuga, Toshiharu
• Primary Examiner(s): Tso, Edward H.
• Application Number:
  US09/044,186
• Time in Patent Office: 551 Days
• Field of Search: 320/106, 320/107, 320/110, 320/112, 320/116, 320/118, 320/119, 320/125, 320/160, 320/FOR 101, 320/FOR 105, 320/FOR 114, 320/FOR 119, 320/FOR 121 , 320/FOR 147, 320/DIG. 12, 320/DIG. 19, 320/DIG. 21
• US Class Current: 320/119
• CPC Class Codes: H01M 10/46 Accumulators structurally combined with charging apparatus circuits for charging H02J7/00
• CPC Class Codes: H01M 50/213 adapted for cells having curved cross-section, e.g. round or elliptic H01M50/209, H01M50/216 take precedence
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/0045 concerning the insertion or the connection of the batteries
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

The battery charging apparatus is provided with a charging power supply for electric power to charge rechargeable batteries, a first battery attachment section positioned close to the power supply, a second battery attachment section positioned further away from the power supply, and a charging controller which fully charges a rechargeable battery in the first battery attachment section faster than a rechargeable battery in the second battery attachment section.

Claims

1. A battery charging apparatus comprising:

(1) a charging power supply for providing electric power to charge rechargeable batteries;

(2) a first battery attachment section positioned adjacent to said charging power supply;

(3) a second battery attachment section positioned adjacent to said first battery attachment section so as to be separated from said charging power supply by said first battery attachment section; and

(4) a charging controller which fully charges a rechargeable battery attached to said first battery attachment section faster than a battery attached to said second battery attachment section, wherein the battery attached to said first battery attachment section is the same type of battery as the battery attached to said second battery attachment section.

2. A battery charging apparatus as claimed in claim 1, wherein a charging current for the rechargeable battery attached to said first battery attachment section is greater than a charging current for the rechargeable battery attached to said second battery attachment section such that said charging controller fully charges the rechargeable battery attached to said first battery attachment section before fully charging the rechargeable battery attached to said second battery attachment section.

3. A battery charging apparatus as claimed in claim 1, wherein the charging controller is operable to offset the timing for initiating charging such that the rechargeable battery attached to said first battery attachment section will reach full charge before the rechargeable battery attached to said second battery attachment section.

4. A battery charging apparatus as claimed in claim 1, wherein said first and second battery attachment sections are configured to receive rechargeable batteries therein in a parallel orientation.

5. A battery charging apparatus as claimed in claim 1, wherein said battery charging apparatus is a nickel-cadmium battery charging apparatus.

6. A battery charging apparatus as claimed in claim 1, wherein said battery charging apparatus is a nickel-hydrogen battery charging apparatus.

7. A battery charging apparatus comprising:

(1) a charging power supply for providing electric power to charge rechargeable batteries;

(2) a first battery attachment section positioned adjacent to said charging power supply;

(3) a second battery attachment section positioned adjacent to said first battery attachment section, wherein said second battery attachment section is disposed on an opposite side of said first battery attachment section relative to said charging power supply;

(4) a charging controller which is operable to fully charge a rechargeable battery attached to said first battery attachment section faster than a rechargeable battery attached to said second battery attachment section without regard to the type of rechargeable battery attached to said first battery attachment section;

(5) a first charging indicator for displaying an indication of the state of charge of the rechargeable battery attached to said first battery attachment section; and

(6) a second charging indicator for displaying the state of charge of the rechargeable battery attached to said second battery attachment section, wherein said first and second charging indicators display full charge after all of the rechargeable batteries in said first and second battery attachment sections have reached full charge.

8. A battery charging apparatus as claimed in claim 7, wherein said first and second charging indicators comprise a first charging indicator lamp and a second charging indicator lamp, respectively.

9. A battery charging apparatus as claimed in claim 8, wherein said first and second charging indicator lamps are lighted while the rechargeable batteries in said first and second battery attachment sections are being charged, and said first and second charging indicator lamps are turned off to indicate full charge upon completion of a charging operation.

10. A battery charging apparatus as claimed in claim 7, wherein said battery charging apparatus is a nickel-cadmium battery charging apparatus.

11. A battery charging apparatus as claimed in claim 7, wherein said battery charging apparatus is a nickel-hydrogen battery charging apparatus.

12. A battery charging apparatus comprising:

a charging apparatus body including a power supply enclosure, a first battery attachment section, a second battery attachment section, wherein said first battery attachment section is disposed adjacent said power supply enclosure and said second battery attachment section is separated from said power supply enclosure;

a power supply plug pivotally mounted on said power supply enclosure; and

a charging controller including power input terminals connected to said power supply plug, first and second parallel charging circuits connected to said first and second battery attachment sections, respectively,

wherein current output from said first charging circuit is always higher than current output from said second charging circuit such that a rechargeable battery in said first battery attachment section charges faster than a rechargeable battery in said second battery attachment section.

13. A battery charging apparatus as claimed in claim 12, further comprising:

a first charging indicator for displaying an indication of the state of charge of the rechargeable battery attached to said first battery attachment section; and

a second charging indicator for displaying the state of charge of the rechargeable battery attached to said second battery attachment section, wherein said first and second charging indicators display full charge after all of the rechargeable batteries in said first and second battery attachment sections have reached full charge.

14. A battery charging apparatus as claimed in claim 13, wherein said first and second charging indicators comprise a first charging indicator lamp and a second charging indicator lamp, respectively.

15. A battery charging apparatus as claimed in claim 12, wherein said first and second charging indicator lamps are lighted while the rechargeable batteries in said first and second battery attachment sections are being charged, and said first and second charging indicator lamps are turned off to indicate full charge upon completion of a charging operation.

16. A battery charging apparatus as claimed in claim 12, wherein said battery charging apparatus is a nickel-cadmium battery charging apparatus.

17. A battery charging apparatus as claimed in claim 12, wherein said battery charging apparatus is a nickel-hydrogen battery charging apparatus.