公开(公告)号：JPH08102313A

公开(公告)日：1996-04-16

申请号：JP23771594

申请日：1994-09-30

Applicant: SONY CORP

Inventor： KOGA YASUNOBU ,  TAKAHASHI HIDEYA ,  ENDO MASAYUKI ,  WATANABE AYAKI

IPC: H01M2/30 ,  H01M10/38 ,  H01M10/39

Abstract: PURPOSE: To reduce material cost and enhance the reliability of a positive terminal by using a material having austenite and ferrite structure at normal temperature in the positive terminal and fixing a positive electrode to a battery cover or a battery can by caulking. CONSTITUTION: A positive terminal 23 is made of two phase stainless steel comprising austenite and ferrite structure at normal temperature, and enveloped together with a negative electrode 3 and a separator 8. The negative electrode 3, the separator 8, a positive electrode 2, and the separator 8, and the negative electrode 3 are mutually stacked in order to form an electrode stacked body. The positive electrode 2 is fixed to a battery cover 21 or a battery can by caulking. Then they are put in a flat type battery container 10 and an electrolyte prepared by dissolving a lithium salt serving as an electrolyte in an organic solvent is poured in the container 10. Since two phase stainless steel is used and the positive electrode is fixed by caulking, cost is reduced, leakage resistance is ensured to the shock such as falling down, and a battery with high reliability can be obtained.

公开(公告)号：JPH01194265A

公开(公告)日：1989-08-04

申请号：JP1566088

申请日：1988-01-26

Applicant: SONY CORP

Inventor： KATAYAMA KIYOSHI ,  HOSHINA NOBORU ,  TAKAHASHI HIDEYA

IPC: B05C3/132 ,  H01M4/04 ,  H01M4/26

Abstract: PURPOSE:To have simultaneous application of coating to both sides of all object by moving it relatively, and supplying the coating to the two sides of the object between two places. CONSTITUTION:When slided in the 8 direction, shutter members 35a, 35b separate from doctor blades 31a, 31b. Thereby a coating 413 is supplied from stagnating parts 36a, 36b simultaneously to both sides of an Al foil 21 and scratched off by the blades 31a, 31b to build coats on the two sides of the Al foil 21 to a certain thickness simultaneously. When the members 35a, 35b are slided in the A direction, on the other band, to come in contact with the blades 31a, 31b, supply of the cooling 43 from its stagnating parts 36a, 36b to the l foil 21 is checked, and no coating is applied on the Al foil 21. Accordingly repetition of movements of the shutter members 35a, 35b in the A and B directions provides intermittent applications of, coating 43 on both sides of the l foil 21.

公开(公告)号：JPH1186868A

公开(公告)日：1999-03-30

申请号：JP24110497

申请日：1997-09-05

Applicant: SONY CORP

Inventor： IWAZU SATOSHI ,  TAKAHASHI HIDEYA ,  KITA YOSUKE

IPC: H01M2/06 ,  H01M2/22 ,  H01M4/64

Abstract: PROBLEM TO BE SOLVED: To provide a secondary battery which can use a copper lead as a lead for high output by eliminating the difficulty of resistance welding when copper is used as the lead, and a manufacturing method therefor. SOLUTION: In a lithium ion secondary battery using a copper foil as current- collecting foil of a negative electrode, a copper lead 2 is used as a lead from the copper foil, and this copper lead 2 is welded to a battery can 8 by resistance welding. Since the copper lead 2 is used, it is suitable for a battery whose maximum electric current is not less than 20 A. In this case, the copper lead 2 is welded to the battery can 8 by resistance welding to heat them by carrying an electric current, by sandwiching the copper lead 2 and the battery can 8 between a first welding electrode bar 3 and a second welding electrode bar 4 in which metal 5 having high electrical resistance is attached to its tip.

公开(公告)号：JPH10144339A

公开(公告)日：1998-05-29

申请号：JP30141996

申请日：1996-11-13

Applicant: SONY CORP

Inventor： IWAZU SATOSHI ,  SHIMIZU TATSUO ,  TAKAHASHI HIDEYA ,  KATAYAMA KIYOSHI ,  KITA YOSUKE

IPC: H01M10/04 ,  H01M10/05 ,  H01M10/052 ,  H01M10/0566 ,  H01M10/0587 ,  H01M10/40

Abstract: PROBLEM TO BE SOLVED: To provide a cylindrical battery with a large capacity and high quality by improving the method for manufacturing a cylindrical battery with a large capacity for which a spiral electrode body with wide width is employed and improving the manufacturing efficiency. SOLUTION: A spiral electrode body 2a is spirally rolled on a rolling core 1 and one end forms a positive pole side 3 and the other end forms a negative pole side 7. The spiral electrode body 2a is produced by rolling a sheet-like positive pole electrode, a sheet-like negative pole electrode, and a separator in layered state and positive pole leads 4 and negative pole leads 8 are led out of the positive pole electrode and the negative pole electrode, respectively, to the respective sides and collected. The rolling core 1 is made of a polymer material and when the electrode body is rolled, the rolling processing carried out while an axis of a winding apparatus being inserted into the center hollow part of the rolling core 1 and on the completion of the rolling up, the rolling core 1 is left in the center of the spiral electrode body 2a as it is and the resultant electrode body is subjected to the next manufacturing process to produce a cylindrical battery having a rolling core 1.

公开(公告)号：JPH09120841A

公开(公告)日：1997-05-06

申请号：JP27585795

申请日：1995-10-24

Applicant: SONY CORP

Inventor： TAKAHASHI HIDEYA ,  WATANABE AYAKI

IPC: H01M2/30 ,  H01M10/05 ,  H01M10/058 ,  H01M10/40

Abstract: PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery of high reliability in which leak of electrolyte is reduced. SOLUTION: A device comprises a positive electrode 7 using lithium-including compound, a negative electrode 5 using carbon material in which lithium ions is doped to be capable of dedoping, nonaqueous electrolyte, and a positive electrode terminal 3 having positive electrode pin 20 caulked to a battery cover 1 through a gasket 21. A hole 20c is provided in this positive electrode pin 20, and a hard ball 21 is inserted into this hole 20c.

公开(公告)号：JPH0992339A

公开(公告)日：1997-04-04

申请号：JP24993695

申请日：1995-09-27

Applicant: SONY CORP

Inventor： KATAYAMA KIYOSHI ,  IWAZU SATOSHI ,  TAKAHASHI HIDEYA ,  SHIMIZU TATSUO ,  KITA YOSUKE

IPC: H01M10/04 ,  H01M4/04 ,  H01M4/36 ,  H01M10/05 ,  H01M10/0587 ,  H01M10/40

Abstract: PROBLEM TO BE SOLVED: To provide a secondary battery in which a winding breakage can be prevented from being caused when a battery electrode having a long winding core is wound with both ends being supported, and the pressure to crush when the battery is crushed can be enhanced. SOLUTION: This secondary battery has an electrode spiral body 13 formed by winding a strip positive electrode 13, a negative electrode 14 and a separator on a winding core 31. The winding core 31 has a cylindrical form. The winding core has a groove on one end.

公开(公告)号：JPH0992258A

公开(公告)日：1997-04-04

申请号：JP24994495

申请日：1995-09-27

Applicant: SONY CORP ,  NISSAN MOTOR

Inventor： IWAZU SATOSHI ,  SHIMIZU TATSUO ,  TAKAHASHI HIDEYA ,  KITA YOSUKE ,  KATAYAMA KIYOSHI ,  OGAMI ETSUO

IPC: H01M2/22 ,  H01M10/05 ,  H01M10/0587 ,  H01M10/40

Abstract: PROBLEM TO BE SOLVED: To provide a secondary battery capable of ensuring the space of a screw part for fixing a bus bar or a conductive wire to an electrode post, and remarkably enhancing the volume energy density. SOLUTION: A secondary battery is related to the secondary battery formed by winding a belt-shaped positive electrode 13, a negative electrode 14, and a separator. For a bolt 19 fixing a bus bar or a conductive wire by interposing, a screw part 16 formed in an electrode post 10 is arranged in the space of a winding core 31. As a result, the space for fixing the bus bar or the conductive wire in the electrode post 10 is ensured, and the volume energy density is remarkably enhanced.

公开(公告)号：JPH0992249A

公开(公告)日：1997-04-04

申请号：JP24993195

申请日：1995-09-27

Applicant: SONY CORP

Inventor： IWAZU SATOSHI ,  SHIMIZU TATSUO ,  TAKAHASHI HIDEYA ,  KITA YOSUKE ,  KATAYAMA KIYOSHI

IPC: H01M2/12 ,  H01M10/05 ,  H01M10/058 ,  H01M10/40

Abstract: PROBLEM TO BE SOLVED: To provide a secondary battery having a venting valve capable of accurately, reproducibly setting venting pressure, and setting the venting pressure low. SOLUTION: A venting valve 9 of a secondary battery consists of a cover part 9c, a fitting part 9d, and a claw part 9a. The fitting part 9d is fixed to the cover part 9c, and a seal 9b made of a polymer elastic body is interposed between the outer circumferential surface of the cover part 9c and the inner circumferential surface of a hole 1a of a cap 1. The claw part 9a is fixed to the end part on the opposite side to the cover part 9c of the fitting part 9d, and the tip is bent along the surface of the cap 1 on the inner side of a battery container 17.

公开(公告)号：JPH0992248A

公开(公告)日：1997-04-04

申请号：JP24992995

申请日：1995-09-27

Applicant: SONY CORP

Inventor： TAKAHASHI HIDEYA ,  SHIMIZU TATSUO ,  IWAZU SATOSHI ,  KITA YOSUKE ,  KATAYAMA KIYOSHI

IPC: H01M2/04 ,  H01M2/12 ,  H01M10/05 ,  H01M10/058 ,  H01M10/40

Abstract: PROBLEM TO BE SOLVED: To provide a secondary battery having structure strong against the outside force such as pressure-inserting force of a cap into a battery container and vibration, and realizing low cleavage pressure. SOLUTION: A secondary battery is related to the cleavage mechanism of a lithium ion secondary battery. A cap 1 fixed to a battery container 17 has a groove 1a proceeding in the outer circumferential direction in a part of the outer circumferential surface. The outer circumferential surface of the cap 1 is welded to the inside surface of the end part of the battery container 17. The groove 1a has the constant depth proceeding to the center from the outer circumferential surface of the cap 1. The angle formed by interposing the whole length between two straight lines connecting the center of the cap 1 to each of the terminal ends of the two grooves 1a exists within the range of 45-270 degrees.

公开(公告)号：JPH0992242A

公开(公告)日：1997-04-04

申请号：JP24994295

申请日：1995-09-27

Applicant: SONY CORP ,  NISSAN MOTOR

Inventor： IWAZU SATOSHI ,  SHIMIZU TATSUO ,  TAKAHASHI HIDEYA ,  KITA YOSUKE ,  KATAYAMA KIYOSHI ,  OGAMI ETSUO

IPC: H01M2/08 ,  H01M2/36 ,  H01M10/05 ,  H01M10/058 ,  H01M10/40

Abstract: PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery capable of decreasing the permeability.passing capability of gas and moisture from/to the outside compared with a seal made of a polymer material such as rubber, and enhancing the reliability of the seal. SOLUTION: A nonaqueous electrolyte secondary battery has an electrolyte pouring port 32 for poring a nonaqueous electrolyte and a blind plug 4 for sealing the electrolyte pouring port 32. A metal seal 2 is arranged between the electrolyte pouring port 32 and the blind plug 4. The metal seal is made of a metal material mainly comprising aluminum, or stainless steel, and the blind plug 4 is made of stainless steel.