Source: https://patents.google.com/patent/US6287718
Timestamp: 2018-02-23 18:48:03
Document Index: 432333038

Matched Legal Cases: ['art 53', 'art 53', 'art 64', 'art 61', 'art 65', 'art 61', 'art 58']

US6287718B1 - Protection device and battery cell using this protection device - Google Patents
Protection device and battery cell using this protection device
US6287718B1
US6287718B1 US09167365 US16736598A US6287718B1 US 6287718 B1 US6287718 B1 US 6287718B1 US 09167365 US09167365 US 09167365 US 16736598 A US16736598 A US 16736598A US 6287718 B1 US6287718 B1 US 6287718B1
US09167365
Tadamitsu Azema
The lid member 51 which can be flexed and has a insulating characteristic has a constitution in which projections 16, 17, 18 in the lid member 12 in the first preferred embodiment are removed, a concave part 53 projecting downwardly is arranged with edges 52 being left over an entire circumference of it, formed into a ship-like shape, a bottom surface 54 of the concave part 53 can be flexed upwardly with the external pressure being applied thereto and a broken-away projection 55 projecting upwardly is fixed to the central part of the bottom surface 54 with adhesive agent or the like. As shown in FIG. 11, the broken-away projection 55 is made such that its width in a longitudinal direction is equal to a width of the projection 47 of the casing 44 in a longitudinal direction, and as shown in FIG. 12, it is formed to be engaged with a valley 47 a of the projection 47 of the casing 44. Then, this lid member 51 is stored in the inner hollow part of the holding member 48 with its edges 52 being abutted against the inner walls of the upper surface 48 a of the holding member 48. When it is stored, the broke-away projection 55 is positioned to face against the valley 47 a of the projection 47 of the casing 44, its extremity end is contacted with the electrical conductive wiring 50 and when the bottom surface 54 is flexed upwardly with the external pressure, the broken-away projection 55 is engaged with the valley 47 a of the projection 47 of the casing 44 to break the electrical conductive wiring 50 so as to cut off the electrical conduction between both ends 50 a and 50 b.
This lid member 51 is supported such that its edges 52 are held under their close contacted state by the side surfaces 48 b of the holding member 48 bent inwardly and by its upper surface 48 a.
In addition, the holding member 48 is fixed such that its side surfaces 48 b are bent with the inward bent side surfaces 44 a of the casing 44, the outer wall of the upper surface 48 a is abutted against the upper surface 44 a of the casing 44, and the holding member 48 is held by the upper surface 44 a and the side surfaces 44 b. As a result, each of the upper surface 48 a and the side surfaces 48 b is closely contacted without any clearance to the inner walls of the upper surface 44 a and the side surfaces 44 b of the casing 44 with a resiliency of the holding member 48 by itself, thereby an inner part enclosed by the casing 44, the holding member 48 and the lid member 51 is sealingly closed.
Wiring members 64, 65 having electrical conducting characteristic which can be bent have a rectangular shape, and the lead portions 64 a, 65 a extending from one side end in a rectangular form are integrally formed. As shown in FIG. 14, the lead part 64 a of the wiring member 64 is bent, abutted against the inner walls of the side surfaces 59 b, the upper surface 59 a of the holding member 59 and the extending part 61 a and positioned within the inner hollow part of the holding member 59. The lead part 65 a of the wiring member 65 is fed out from the clearance 62 b of the holding member 59 into the inner hollow part of the holding member 59, bent to cause its extremity end to be abutted against that inner wall of the extending part 61 b and at the same time it is bent along the outer walls of the upper surface 59 a and the side surfaces 59 b.
Then, this holding member 59 is stored in the inner hollow part of the casing 56, each of the outer walls of the upper surface 59 a and the side surfaces 59 b is abutted against the inner walls of the upper surface 56 a and the side surfaces 56 b, the projections 63 a, 63 b of the extending portions 61 a, 61 b are positioned within the concave part 58 of the casing 56 and the abutted against the inner wall.
an electrically insulative casing;
an electrically insulative lid member;
a breakable member arranged in a space between said casing and said lid member, said breakable member including an insulting member having an electrically conductive layer formed thereon; and
a pair of wiring members, one of said wiring members being connected to one end of the electrically conductive layer of said breakable member and the other wiring member being connected to an opposite end of the electrically conductive layer of said breakable member, said wiring members extending out of said casing,
wherein said breakable member is broken by a flexing of said casing or said lid member in response to an applied pressure, thereby cutting off electrical conduction between said pair of wiring members by severing the electrically conductive layer.
2. A protection device comprising:
an insulating casing having an inner hollow part,
an electrically conductive breakable member stored in said casing,
a pair of wiring members, one of said wiring members being connected to one end of said breakable member and the other wiring member being connected to an opposite end of said breakable member, said pair of wiring members being electrically connected through said breakable member,
a resilient and insulating holding member stored in said casing and for holding said breakable member, and
a flexible, electrically conductive lid member connected to said casing through said holding member in such a way that the hollow inner part of said casing is sealingly closed,
wherein said breakable member is held by said lid member and said casing,
wherein said pair of wiring members are extended out of a space sealingly closed by said casing, said holding member and said lid member,
wherein said lid member is provided with a projection which is abutted against said breakable member at a position adjacent to a central part of said breakable member, and
wherein said projection breaks said breakable member by flexing of said lid member in response to an applied pressure so as to cut off an electrical conduction between said pair of wiring members.
3. A protection device according to claim 2, wherein said breakable member includes a ceramic substrate and an electrically conductive layer formed on a surface of the ceramic substrate, one end of said electrically conductive layer being connected to one of said pair of wiring members, the other end of said electrically conductive layer being connected to the other wiring member.
US09167365 1994-07-07 1998-10-07 Protection device and battery cell using this protection device Expired - Fee Related US6287718B1 (en)
JP6-179619 1994-07-07
JP17961994 1994-07-07
US08499051 US6120928A (en) 1994-07-07 1995-07-06 Protection device and battery cell using this protection device
US09167365 US6287718B1 (en) 1994-07-07 1998-10-07 Protection device and battery cell using this protection device
US08499051 Division US6120928A (en) 1994-07-07 1995-07-06 Protection device and battery cell using this protection device
US6287718B1 true US6287718B1 (en) 2001-09-11
ID=16068929
US08499051 Expired - Fee Related US6120928A (en) 1994-07-07 1995-07-06 Protection device and battery cell using this protection device
US09167365 Expired - Fee Related US6287718B1 (en) 1994-07-07 1998-10-07 Protection device and battery cell using this protection device
US (2) US6120928A (en)
DE (1) DE19524870C2 (en)
US20160093867A1 (en) * 2014-09-29 2016-03-31 Samsung Sdi Co., Ltd. Rechargeable battery
US6120928A (en) * 1994-07-07 2000-09-19 Alps Electric Co., Ltd. Protection device and battery cell using this protection device
US6335109B1 (en) * 1998-04-28 2002-01-01 Kyocera Corporation Safety device and secondary battery using the same
DE102008059958B4 (en) 2008-12-02 2013-04-25 Daimler Ag And single cell battery having a plurality of electrically in series and / or parallel interconnected single cells
EP2400578B1 (en) * 2010-06-25 2013-04-03 Samsung SDI Co., Ltd. Secondary Battery
US5705290A (en) * 1995-08-11 1998-01-06 Alps Electric Co., Ltd. Secondary cell safety device including pressure release mechanism and current cutoff mechanism
US7232625B2 (en) * 1999-07-30 2007-06-19 Cochlear Limited Secondary electrochemical cell
US9825277B2 (en) * 2014-09-29 2017-11-21 Samsung Sdi Co., Ltd. Rechargeable battery
DE19524870A1 (en) 1996-02-29 application
US6120928A (en) 2000-09-19 grant
DE19524870C2 (en) 1999-03-04 grant
US6296965B1 (en) 2001-10-02 Cell electrical path breaking mechanism