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1. 发明专利

JPH11317212A THREE LAYER STRUCTURE BATTERY SEPARATOR 失效
公开(公告)号：JPH11317212A
公开(公告)日：1999-11-16
申请号：JP6670299
申请日：1999-03-12
申请人： CELGARD LLC
发明人： SPOTNITZ ROBERT M
IPC分类号： B29C55/00 , B32B5/18 , H01M2/16 , H01M6/50
摘要： PROBLEM TO BE SOLVED: To make satisfactorily thin, make sufficiently strong, and specify the shutoff temperature to practical specified temperature or lower by forming a microporous layer film of a shutoff layer by a phase inversion process and forming a strength layer by a drawing process. SOLUTION: A shutoff battery separator 10 is formed by interposing a porous shutoff layer 14 in the center between two microporous strength layer 12, 16. The shutoff layer 14 is formed by a phase inversion process, and the strength layers 12, 16 are formed by a drawing process. The thickness of the separator 10 is preferable to be 1 mil (about 0.0254 mm) or less. The separator 10 can ensure a sufficient strength without sacrificing the thickness. The shutoff layer 14 is melted to block pores at a temperature (shutoff temperature) lower than the temperature which is the melting point of the strength layer 12, 16, and causes thermorunaway. The shutoff temperature of the battery separator is 124 deg.C or lower, and the most preferable shutoff temperature is about 110 deg.C.

2. 发明专利

JPH11260341A SEPARATOR FOR GEL ELECTROLYTE BATTERY 失效
公开(公告)号：JPH11260341A
公开(公告)日：1999-09-24
申请号：JP863799
申请日：1999-01-18
申请人： CELGARD LLC
发明人： SPOTNITZ ROBERT M , WENSLEY GLEN C
IPC分类号： H01M2/16 , H01M6/22 , H01M10/0525 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To provide a shut-down function required for safe handling of an electrode in the case of overcharging and to exhibit sufficient adhesion effect between gel type polymer and a porous film by including a porous film and an adhesive coating arranged on the porous film and provided with a surface density less than a specific value. SOLUTION: A battery 10 is constituted of a positive electrode 20, a negative electrode 30, and an electrolyte/separator system 40 arranged between them. The electrolyte/separator system 40 contains a porous film 42, a gel electrolyte 44, and an adhesive coating 46 arranged between them and provided with a surface density less than 0.3 mg/cm . In this way, gel type polymer (and/or a combination of the gel type polymer and an electrolyte) tends to peel off or separate from the porous film 42. Therefore, before the gel type polymer is applied to the surface of the porous film 42, the adhesive coating 46 is applied onto the surface of the porous film 42 for assisting in binding between them.

3. 发明专利

JPH11221783A PORTABLE POWER TOOL HAVING LOW-SPEED RECHARGEABLE BATTERY 失效
公开(公告)号：JPH11221783A
公开(公告)日：1999-08-17
申请号：JP33361698
申请日：1998-11-25
申请人： CELGARD LLC
发明人： SPOTNITZ ROBERT M
IPC分类号： B25F5/00 , B25F5/02 , H01M2/10 , H01M10/052 , H01M10/0525 , H01M10/34
摘要： PROBLEM TO BE SOLVED: To use a portable power tool for a long time without remarkably increasing the weight of the tool by comprising a cable for connecting a battery pack separated from a power tool, and the power tool. SOLUTION: A cable 22 electrically connects a low-speed battery pack 14 which is connected in parallel on a belt 18, with a power tool 12 through a removable connector 24. The cable 22 preferably incorporates a reel 20. The reel, 20 is an expandable device, and includes the cable 22 when it is not used. The low-speed battery means a battery which outputs the total energy capacity throughout a long time (for example, longer than 1 hour), but can not output the majority of capacity for a short time (for example, 5 minutes).

4. 发明专利

CA2259786A1 TRILAYER BATTERY SEPARATOR 未知
公开(公告)号：CA2259786A1
公开(公告)日：1999-09-12
申请号：CA2259786
申请日：1999-01-19
申请人： CELGARD LLC
发明人： SPOTNITZ ROBERT M
IPC分类号： B29C55/00 , B32B5/18 , H01M2/16 , H01M6/50
摘要： A trilayer shutdown battery separator is provided having two microporous strength layer membranes sandwiching one microporous shutdown layer membrane. The strength layers are made by a stretch method. The shutdown layer is made by a phase inversion method. The preferred method of making such a trilayer separator comprises: making microporous strength layers by a stretch method; forming a microporous shutdown layer by phase inversion process; and bonding two microporous strength layers and one microporous shutdown layer into the trilayer battery separator.

5. 发明专利

CA2246646A1 PORTABLE POWER TOOL HAVING LOW RATE, RECHARGEABLE BATTERIES 未知
公开(公告)号：CA2246646A1
公开(公告)日：1999-05-26
申请号：CA2246646
申请日：1998-09-03
申请人： CELGARD LLC
发明人： SPOTNITZ ROBERT M
IPC分类号： B25F5/00 , B25F5/02 , H01M2/10 , H01M10/052 , H01M10/0525 , H01M10/34 , B23B45/02
摘要： The present invention is directed to a portable power tool having an electric power tool, a low weighted battery pack and a cable interconnecting the pack to the tool. The pack is remote from the tool.

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