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1. 发明专利

JPH08329975A SEALED LEAD-ACID BATTERY 失效
公开(公告)号：JPH08329975A
公开(公告)日：1996-12-13
申请号：JP13908695
申请日：1995-06-06
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SAKATA YASUHEI , OKADA HIDEKI
IPC分类号： H01M2/02 , H01M2/16 , H01M4/74 , H01M10/12
摘要： PURPOSE: To improve the trickle lifetime at the time of discharging at a high factor by using an expand plate grid, and using polypropylene resin battery jar at a low moisture permeability so as to lower the reduction of the electrolyte during the use of a battery. CONSTITUTION: An expand plate grid is used for a positive plate 1, and this positive plate 1 is sandwiched by separators 2 made of a glass mat, which is mainly composed of glass fiber and of which density is set at 0.14-0.25g/cm . Volume ratio of the quantity of the negative electrode active material in relation to the quantity of the positive electrode active material is set at 0.7-0.95, and the bounce of the separator 2 in a dry battery is set at 20-60kg/dm , and they are housed in a polypropylene resin battery jar. Quantity of the electrolyte after the formation is set at 85-98% in relation to the theoretical porosity of the separator 2.

2. 发明专利

JP2001273932A CYLINDRICAL LITHIUM-ION SECONDARY BATTERY 失效
公开(公告)号：JP2001273932A
公开(公告)日：2001-10-05
申请号：JP2000088001
申请日：2000-03-28
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOKOYAMA TAKASHI , IWASHITA NAOKO , OKADA HIDEKI , NIWA YUKIMASA
IPC分类号： H01M10/05 , H01M2/34 , H01M10/0587 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To provide an upper insulation plate to prevent an internal short circuit of a case upon receiving excessive vibration or impact in a cylindrical lithium-ion secondary battery. SOLUTION: An upper insulation plate which has a shape as shown in the figure is used having two symmetrical notch parts in an outer circumferential part, and having cut parts which are bilaterally symmetrical. Further, the cylindrical lithium-ion secondary battery of a high reliability which is also superior in mass production properties can be obtained by this.

3. 发明专利

JPH10189031A SEALED LEAD STORAGE BATTERY 失效
公开(公告)号：JPH10189031A
公开(公告)日：1998-07-21
申请号：JP34102396
申请日：1996-12-20
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKADA HIDEKI , FUKUDA SADAO
IPC分类号： H01M10/16
摘要： PROBLEM TO BE SOLVED: To surpress deterioration of an electrode in an early stage caused by unbalanced burden on the electrode plate arising from vibration of a group of electrodes, by solidifying with alkali silicate a lower part of a group of electrodes for sealed lead storage battery in a battery jar and by arranging the group of electrodes at a predetermined place so that they do not move. SOLUTION: A lower part of a group of electrode plates is solidified with sodium silicate and the like under a condition in which the group of electrode plates consisting of a positive electrode plate 1, a negative electrode plate 2 and a separator 3 is contained in a battery jar 4. For example, electrolyte mixed with sodium silicate is injected in each cell, and after the group of electrode plates is inserted in the battery jar gelatin of the electrolyte is made by leaving it as it is or drying it so that the group of electrode plates are solidified. The sodium silicate to use is preferably composed of 20-21weight% of Na2 O, not more than 0.95% of SiO2 and 79-80% of H2 O. The lower part of the group of electrode plates is impregnated in aqueous solution mixed with sodium silicate and dilute sulfonic acid.

4. 发明专利

JPH09231996A MANUFACTURE OF SEALED LEAD ACID BATTERY 失效
公开(公告)号：JPH09231996A
公开(公告)日：1997-09-05
申请号：JP3523496
申请日：1996-02-22
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SAKATA YASUHEI , OKADA HIDEKI
IPC分类号： H01M4/22 , H01M2/16 , H01M4/74 , H01M10/12
摘要： PROBLEM TO BE SOLVED: To provide a sealed lead acid battery having high superior electric discharging performance and also having a superior long life by a method wherein a paste paper sheet adhered with specified aqueous solution is adhered to either a positive plate or a negative plate. SOLUTION: The manufacturing of a sealed lead acid battery is carried out such that after a paste paper sheet coated with aqueous solution of sodium silicate at its surface is applied, an aged and dried electrode plate and a glass fiber separator are combined to each other to constitute a group of electrode plates. The paste sheet adhered to the surface of the electrode plate has no acid resistive characteristics, it may be decomposed or melted and eliminated while being immersed in electrolyte. However, sodium silicate coated on the paste paper sheet is changed into gelation and left at the surface of the electrode plate. With such an arrangement as above, a contact between the electrode and the separator is kept well so as to keep a dispersion of electrolyte.

5. 发明专利

JP2001135305A PRODUCING METHOD OF POSITIVE ELECTRODE PLATE FOR NONAQUEOUS ELECTROLYTIC SOLUTION SECONDARY BATTERY 失效
公开(公告)号：JP2001135305A
公开(公告)日：2001-05-18
申请号：JP31055999
申请日：1999-11-01
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NAKAMURA RIICHI , OOHANA YORITO , OKADA HIDEKI
IPC分类号： H01M4/62 , H01M4/13 , H01M4/139 , H01M10/0566 , H01M4/04
摘要： PROBLEM TO BE SOLVED: To provide a nonaqueous electrolytic solution secondary battery which can improve high load discharging characteristics and decrease open voltage defect ratio of a battery. SOLUTION: When a positive dectrode plate made by applying synthetic agent of positive electrode active material that contains organic viscosity increase agent to a collector body is put under a heat processing at 170 to 350 deg.C concentration of oxygen around the positive electrode plate is not less than 30 vol.% and not more than 100 vol.%. Thereafter, the positive electrode plate is rolled and shaped for obtaining the positive plate for nonaqueous electrolytic solution secondary battery.

6. 发明专利

JP2000260482A SECONDARY BATTERY 失效
公开(公告)号：JP2000260482A
公开(公告)日：2000-09-22
申请号：JP6130699
申请日：1999-03-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MATSUHISA ICHIRO , YOKOYAMA TAKASHI , OKADA HIDEKI
IPC分类号： H01M10/05 , H01M10/058 , H01M10/44 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To detect a defective circuit voltage in a shipment inspection so as to improve battery quality by connecting all the batteries in the corresponding lot in parallel after initial charging for matching open circuit voltages with each other. SOLUTION: A negative electrode using carbon applied to a copper foil as a negative electrode active material and a positive electrode using lithium cobaltate as a positive electrode active material are wounded several times via a separator into a roll-shaped group of components. Constant current charging is finished when a battery voltage reaches 4.1 V. Subsequently, all the batteries in the same production lot are connected in parallel so as to be left standing, and the battery voltage match each other. After again is carried out further, an open circuit voltage inspection is carried out and only a secondary battery with a defective open circuit voltage is rejected. In this way, variation of an open circuit voltage is reduced, and a secondary battery causing minor internal short circuit can be easily selected so as to be removed. Alternatively, matching of voltage may be carried out by performing parallel connection in aging or after aging.

7. 发明专利

JPH0869782A SEALED LEAD-ACID BATTERY 失效
公开(公告)号：JPH0869782A
公开(公告)日：1996-03-12
申请号：JP20345294
申请日：1994-08-29
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKADA HIDEKI , KOBAYASHI KENJI , YOSHIMINE TOSHIBUMI
IPC分类号： H01M2/02 , H01M10/12 , H01M10/16
摘要： PURPOSE: To prevent the drop of the capacity of a battery by specifying the volume of a battery jar at 10 -10 mm , and making a battery vessel of material allowing specified water to permeate itself, and besides, putting the compression ratio of a separator at the specified value sought with the expression 1. CONSTITUTION: For the group of electrode plates consisting of a positive electrode plate 1, a negative electrode plate 2, and a separator 3, the volume of the battery body is 10 -10 mm . Moreover, water of 3.0×10 -9.0×10 g/thickness of material mm/area of material cm /time of permeation hr under one atmospheric pressure at 25 deg.C permeates a battery jar. The thickness of the separator 3 is thickened, and pressure applied to the group of electrode plates sought with the expression 1 is made 1.35-1.75 in compression ratio. Among the expression 1, A shows the thickness of the separator at load of 20kg/dm , B shows the inside dimension at the center of the height of the battery jar, P shows the average thickness of the positive electrode plate, and N shows the average thickness of the negative electrode plate. Moreover, n1 shows the number of sheets of the separator, n2 shows the number of sheet of the positive electrode plates, and n3 shows the number of sheets of the negative electrode plates. Here, the compression ration can be changed within the specified range by changing the thickness of the separator 3, so the life in trickle use can be prolonged.

8. 发明专利

JP2002231314A NONAQUEOUS ELECTROLYTE SECONDARY BATTERY 审中-公开
公开(公告)号：JP2002231314A
公开(公告)日：2002-08-16
申请号：JP2001360200
申请日：2001-11-27
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOKOYAMA TAKASHI , OKADA HIDEKI , YAMAMOTO NORIHIRO
IPC分类号： H01M10/05 , H01M10/0525 , H01M10/0566 , H01M10/0585 , H01M10/0587 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery having high safety by preventing deformation of an electrode group in overcharge in the nonaqueous electrolyte secondary battery, in which the electrode group formed by winding or stacking a positive plate and a negative plate through a separator, insulating plates arranged in the top and the bottom of the electrode group, and a nonaqueous electrolyte are housed in a battery case, and the battery case is sealed with a sealing plate. SOLUTION: The insulating plate, arranged in at least the top, is composed of a laminated plate of phenol resin containing inorganic additives using a glass cloth as a base material, the average particle size of the inorganic additive is made smaller than the glass fiber diameter of the glass cloth, and the constitution ratio of the glass cloth, the phenol resin, and the inorganic additive is made, such that the glass cloth is 55-70 wt.%, the phenol resin is 40-25 wt.%, and the inorganic additive is 5-15 wt.%, and the thickness of the insulating plate is made 0.3-0.65 mm.

9. 发明专利

JPH08329976A SEALED LEAD-ACID BATTERY 失效
公开(公告)号：JPH08329976A
公开(公告)日：1996-12-13
申请号：JP13332295
申请日：1995-05-31
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKADA HIDEKI , YOSHIMINE TOSHIBUMI
IPC分类号： H01M2/02 , H01M10/16
摘要： PURPOSE: To provide a sealed lead-acid battery, of which trickle lifetime characteristic is improved. CONSTITUTION: A sealed lead-acid battery has a battery jar alternately provided with rib parts which contacts with the surface of a plate without rib parts in the inner wall thereof arranged opposite to the surface of the plate. The rib part occupies 30% or more of the surface of the inner wall of the battery jar opposite to the surface of the plate so as to increase the mean thickness of the battery jar opposite to the surface of the plate.

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