Battery connection apparatus employing fixed latching members

• US 5,909,102 A
• Filed: 01/21/1998
• Issued: 06/01/1999
• Est. Priority Date: 01/21/1998
• Status: Expired due to Fees

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Groebe, Daniel Philip, Barber, James Henry, Stone, Frank Henry III
• Primary Examiner(s): Tso, Edward H.
• Application Number:
  US09/010,101
• Time in Patent Office: 496 Days
• Field of Search: 320/107, 320/110, 320/112, 320/113, 320/114, 320/FOR 101, D13/103, D13/107, 429/96, 429/99, 429/100
• US Class Current: 320/114
• CPC Class Codes: H01M 50/202 Casings or frames around the primary casing of a single cell or a single battery
• CPC Class Codes: H01M 50/244 Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
• CPC Class Codes: H01M 50/247 specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
• CPC Class Codes: H01M 50/296 characterised by terminals of battery packs terminals of batteries H01M50/543
• CPC Class Codes: H01M 50/50 Current conducting connections for cells or batteries
• CPC Class Codes: H01R 13/2442 with a single cantilevered beam
• CPC Class Codes: H04B 1/3883 Arrangements for mounting batteries or battery chargers
• CPC Class Codes: H04M 1/0262 for a battery compartment
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A battery attachment apparatus (201) for attaching a battery (200) to an electronic device (100) includes a fixed latch arrangement and a contact arrangement. The fixed latch arrangement is carried on the electronic device (100) and the battery (200). The contact arrangement has a flat contact (220) carried on the battery (200) and a spring contact (310) carried on the electronic device (100). Upon mating the flat and spring contacts (220 and 310), the spring contact (310) deflects and urges the battery (200) into engagement with the fixed latch arrangement, thereby, securing attachment of the battery (200) and electrically connecting the battery (200) to the electronic device (100).

Claims

1. A battery attachment apparatus comprising:

a housing having at least one electrochemical cell positioned therein, the housing having first and second opposing ends;

a plurality of contacts carried on the housing; and

a latching arrangement carried on the housing separate from the plurality of contacts, the latching arrangement to removably secure the housing to a second housing using only fixed non-movable latching members, the fixed non-movable latching members of the latching arrangement comprising;

a first mating notch formed in the first end, the first mating notch having a first depth; and

a second mating notch formed in the second end, the second mating notch having a second depth different from the first depth.

2. A battery attachment apparatus according to claim 1 wherein the fixed non-movable latching members of the latching arrangement further comprise a third mating notch formed in the second end, the third mating notch having a third depth different from the first depth.

3. A battery attachment apparatus according to claim 1

further comprising a plurality of openings formed in the second end of the first housing, and

wherein each one of the plurality of contacts is a flat contact, each one of the plurality of contacts recessed in corresponding ones of the plurality of openings.

4. A battery attachment apparatus according to claim 1 wherein

the housing further comprises a face surface extending between the first and second opposing ends, and

the first mating notch intersects an edge where the face surface joins the first end.

5. A battery attachment apparatus according to claim 2 wherein

the housing has a substantially rectangular solid shape defined by a longitudinal axis and a transverse axis, and

each of the second and third mating notches is defined by a generally rectangular opening that extends longitudinally in a plane parallel to the transverse axis.

6. A battery attachment apparatus according to claim 2 wherein

the housing further comprises first and second side surfaces, the first and second side surfaces perpendicularly interconnecting the first and second ends, the first side surface joining the second end at a first edge, and the second side surface joining the second end at a second edge,

the second mating notch is located between a center of the second end and the first edge, and

the third mating notch is located between the center of the second end and the second edge.

7. A battery attachment apparatus according to claim 2 wherein

the housing further comprises first and second side surfaces, the first and second side surfaces perpendicularly interconnecting the first and second ends,

the second mating notch intersects an edge where the first side surface joins the second end,

the third mating notch intersects an edge where the second side surface joins the second end, and

the plurality of contacts are located on the second end between the second and third mating notches.

8. A battery attachment apparatus according to claim 1 wherein

the housing further comprises first and second side surfaces, the first and second side surfaces perpendicularly interconnecting the first and second ends, and

the first mating notch is located at a center of the first end equidistant the first and second side surfaces.

9. A battery attachment apparatus according to claim 1 wherein the second depth is at least twice as large as the first depth.

10. A battery attachment apparatus according to claim 1 wherein

the housing further comprises a face surface extending between the first and second ends, and

the plurality of contacts are located at an edge where the face surface joins the second end, each of the plurality of contacts is "L"-shaped to extend along the second end and the face surface.

11. A battery attachment apparatus according to claim 1 further comprising:

the second housing, the second housing having electronic circuitry positioned therein, the second housing having a recess, the recess enclosed by first and second opposing endwalls and first and second opposing sidewalls extending between the first and second endwalls;

a second plurality of contacts carried in the recess, the second plurality of contacts to mate with the plurality of contacts; and

a second latching arrangement carried in the recess, the second latching arrangement to mate with the latching arrangement, the second latching arrangement comprising;

a first catch carried on the first endwall, the first catch for insertion into the first mating notch; and

a second catch carried on the second endwall, the second catch for insertion into the second mating notch.

12. A battery attachment apparatus according to claim 11 wherein

the first catch has a first length, and

the second catch has a second length, the second length at least twice as large as the first length.

13. A battery attachment apparatus according to claim 11 wherein

each of the plurality of contacts is a non-movable flat contact electrically connected to the at least one electrochemical cell, and

each of the second plurality of contacts is a deflectable spring contact electrically connected to the electronic circuitry, the second plurality of contacts to facilitate mating of the second latching arrangement and the latching arrangement, and the second plurality of contacts to deliver battery power from the at least one electrochemical cell to the electronic circuitry.

14. A battery attachment apparatus for attaching a battery to an electronic device, the battery attachment apparatus comprising:

a latching arrangement carried on the electronic device and the battery to removably secure the battery to the electronic device using only fixed non-movable latching members, and

a contact arrangement carried on the electronic device and the battery, the contact arrangement separate from the latching arrangement, the contact arrangement comprising a first plurality of contacts and a second plurality of contacts, one of the first and second pluralities of contacts carried on the battery, the other one of the first and second pluralities of contacts carried on the electronic device, the contact arrangement to apply a spring force to facilitate engagement of the fixed non-movable latching members of the latching arrangement and physically attach the battery to the electronic device, and the contact arrangement to mate the first and second pluralities of contacts to facilitate an electrical connection and electrically connect the battery to the electronic device.

15. A battery attachment apparatus according to claim 14 wherein the fixed non-movable latching members of the latching arrangement comprise first and second catches and first and second notches, the first catch having a first length, the second catch having a second length greater than the first length, the first notch having a first depth, the second notch having a second depth greater than the first depth.

16. A battery attachment apparatus according to claim 15 wherein, upon engagement of the fixed non-movable latching members of the latching arrangement, the first catch is received in the first notch and the second catch is partially received in the second notch.

17. A battery attachment apparatus according to claim 16 wherein an amount of the second catch received in the second notch is approximately equal to the first length.

18. A battery attachment apparatus according to claim 15 wherein

the electronic device has first and second opposing endwalls,

the battery has first and second opposing ends,

the first and second pluralities of contacts are carried between the first end and the first endwall,

each of the first plurality of contacts is a flat contact, and

each of the second plurality of contacts is a spring contact, the second plurality of contacts deflectable by the first plurality of contacts to a fourth length during attachment of the battery to the electronic device, the fourth length less than the second length.

19. A battery attachment apparatus according to claim 18 wherein the first and second endwalls are spaced apart a first distance, the first distance less than a sum of a distance between the first and second ends of the battery and the fourth length.

20. A battery attachment apparatus according to claim 18 wherein the second plurality of contacts are deflectable by the first plurality of contacts to a fifth length upon securing the battery to the electronic device, the fifth length greater than the fourth length and less than the second length.

21. A battery attachment apparatus according to claim 20 wherein the first and second endwalls are spaced apart a first distance, the first distance approximately equal to a sum of a distance between the first and second ends of the battery and the fifth length.

22. A battery attachment apparatus according to claim 14 wherein each of the second plurality of contacts comprises:

a central body,

a contact spring arm having a substantially curved "J"-shaped segment extending from one end of the central body and a substantially folded "<

"-shaped segment extending from the "J"-shaped segment, and

a lead spring arm having a first slanting segment extending substantially perpendicular from the other end of the central body and a second slanting segment extending slightly less than perpendicular from the first slanting segment.

23. A battery attachment apparatus according to claim 22 wherein

the contact spring arm is deflectable in a first direction, and

the lead spring arm is deflectable in a second direction different from the first direction.

24. A battery attachment apparatus according to claim 22

further comprising a detachable contact block, and

wherein the central body comprises a locking tooth to secure each of the second plurality of contacts in the contact block.

25. A battery-powered electronic device comprising:

a battery comprising;

a battery housing having at least one electrochemical cell disposed therein, the battery pack comprising first and second ends, first and second side surfaces extending between the first and second ends, and first and second face surfaces extending between the first and second ends and the first and second side surfaces, the second end joining the first side surface at a first edge, and the second end joining the second side surface at a second edge,

a first notch formed in a center of the first end equidistant the first and second side surfaces,

a second notch formed in the second end at the first edge,

a third notch formed in the second end at the second edge,

a plurality of flat contacts carried on the second end, the plurality of flat contacts located between the second and third notches, the plurality of contacts electrically connected to the at least one electrochemical cell; and

an electronic device comprising;

a device housing having electronic circuitry positioned therein and a recess, the recess bounded by first and second endwalls, first and second sidewalls extending between the first and second endwalls, and a base surface extending between the first and second endwalls and the first and second sidewalls,

a first catch carried on a center of the first endwall equidistant the first and second sidewalls, the first catch for insertion into the first notch,

a second catch carried on the second endwall, the second catch located between a center of the second endwall and the first sidewall, the second catch for insertion into the second notch,

a third catch carried on the second endwall, the third catch located between the center of the second endwall and the second sidewall, the third catch for insertion into the third notch, and

a plurality of spring contacts carried on the second endwall, the plurality of spring contacts located between the second and third catches directly opposite the first catch, the plurality of spring contacts electrically connected to the electronic circuitry, the plurality of spring contacts adapted to mate with corresponding ones of the plurality of flat contacts to electrically connect the electronic circuitry to the at least one electrochemical cell, and the plurality of spring contacts further adapted to push the battery into abutment with the first endwall of the recess and obtain insertion of the first catch into the first notch and partial insertion of the second and third catches into the second and third notches to physically attach the battery to the electronic device.