JP2003178660A - Overheat protecting element and secondary battery - Google Patents
Overheat protecting element and secondary batteryInfo
- Publication number
- JP2003178660A JP2003178660A JP2002266738A JP2002266738A JP2003178660A JP 2003178660 A JP2003178660 A JP 2003178660A JP 2002266738 A JP2002266738 A JP 2002266738A JP 2002266738 A JP2002266738 A JP 2002266738A JP 2003178660 A JP2003178660 A JP 2003178660A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- pair
- insulating film
- overheat protection
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000743 fusible alloy Inorganic materials 0.000 claims abstract description 45
- 230000004907 flux Effects 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims description 263
- 239000002184 metal Substances 0.000 claims description 261
- 229920005992 thermoplastic resin Polymers 0.000 claims description 20
- 238000010248 power generation Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 19
- -1 polyethylene terephthalate Polymers 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 229910052718 tin Inorganic materials 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 125000005487 naphthalate group Chemical group 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000011112 polyethylene naphthalate Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910003307 Ni-Cd Inorganic materials 0.000 description 1
- 229910018502 Ni—H Inorganic materials 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Fuses (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、過昇温による機器
の破損を防止するために使用される過熱保護素子および
二次電池に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overheat protection device and a secondary battery used to prevent damage to equipment due to excessive temperature rise.
【０００２】[0002]
【従来の技術】近年、二次電池の技術開発の進展が著し
い。特に、携帯電話、ＰＨＳ、ノート型パソコンなどの
機器に使用される電池として、小型でかつ１回の充電で
長時間使用可能な二次電池の開発と実用化が行われてい
る。具体的には、Ｎｉ−Ｃｄ電池、Ｎｉ−Ｈ電池、Ｌｉ
イオン電池、Ｌｉ−ポリマ電池のような電池の開発と実
用化が進み、より小型で長寿命を持つ二次電池が開発さ
れている。2. Description of the Related Art In recent years, the technological development of secondary batteries has made remarkable progress. In particular, as a battery used in devices such as a mobile phone, a PHS, and a notebook computer, a small secondary battery that can be used for a long time with one charge has been developed and put into practical use. Specifically, Ni-Cd battery, Ni-H battery, Li
Batteries such as ion batteries and Li-polymer batteries have been developed and put into practical use, and secondary batteries having a smaller size and a longer life have been developed.
【０００３】この二次電池の安全性を確保するために、
短絡時などの発熱によって断線する過熱保護素子が使用
される。この過熱保護素子としては、可溶体を使用した
過熱保護素子が一般に使用されている。In order to ensure the safety of this secondary battery,
An overheat protection element that breaks due to heat generated when a short circuit occurs is used. As this overheat protection element, an overheat protection element using a fusible material is generally used.
【０００４】図１４は従来の過熱保護素子の断面図で、
この図１４において、１は一対の金属端子で、この一対
の金属端子１はそれぞれ第１の絶縁フィルム２の下面に
取り付けられ、かつこの一対の金属端子１の各先端部は
第１の絶縁フィルム２の下面側から上面側に表出してい
る。そして表出した一対の金属端子１の先端部間には、
フラックス３が塗布された可溶合金４を接続している。
また、前記第１の絶縁フィルム２の上面には可溶合金４
を覆うように第２の絶縁フィルム５が封止により取り付
けられている。FIG. 14 is a sectional view of a conventional overheat protection element.
In FIG. 14, reference numeral 1 denotes a pair of metal terminals, each pair of metal terminals 1 is attached to the lower surface of a first insulating film 2, and each tip of the pair of metal terminals 1 has a first insulating film. 2 is exposed from the lower surface side to the upper surface side. Then, between the exposed tips of the pair of metal terminals 1,
The fusible alloy 4 coated with the flux 3 is connected.
The fusible alloy 4 is formed on the upper surface of the first insulating film 2.
The second insulating film 5 is attached by sealing so as to cover the.
【０００５】図１５は上記従来の過熱保護素子を使用し
た二次電池の一部切欠斜視図である。FIG. 15 is a partially cutaway perspective view of a secondary battery using the above conventional overheat protection element.
【０００６】図１５において、６は有底角筒状の電池缶
で、この電池缶６は金属により構成され、かつこの電池
缶６には発電要素７を内蔵している。そしてこの発電要
素７は一方の極を電池缶６としている。８は前記電池缶
６の上方開口部を閉塞する蓋で、この蓋８には前記発電
要素７の他方の極を構成する電極端子９を取り付けてい
る。１０は前記蓋８に設置された過熱保護素子で、この
過熱保護素子１０は一対の金属端子１１ａ，１１ｂを備
えており、かつこの一対の金属端子１１ａ，１１ｂのう
ち、一方の金属端子１１ａは前記電極端子９に電気的に
接続されているもので、この接続はスポット溶接により
行っている。また前記一対の金属端子１１ａ，１１ｂの
うち、他方の金属端子１１ｂは、前記電池缶６の側面に
設置され、かつ二次電池を過充電・過放電等から保護す
る保護回路１２に設けられた金属製の一方の入力端子１
３に電気的に接続されているもので、この接続もスポッ
ト溶接により行っている。そしてまた前記保護回路１２
と電池缶６は、保護回路１２に設けられた金属製の他方
の入力端子１４によって接続されている。１５は前記電
池缶６の側面から蓋８にかけて設けられた絶縁シート
で、この絶縁シート１５は、電池缶６と、過熱保護素子
１０における他方の金属端子１１ｂ、保護回路１２およ
び一対の入力端子１３，１４とを絶縁し、過熱保護素子
１０における一対の金属端子１１ａ，１１ｂの短絡を防
止するものである。また前記保護回路１２には出力端子
が設けられているもので、この二次電池は絶縁ケース等
に封入し、出力端子のみを露出させることによりパック
電池を構成し、出力端子から外部の機器への充電、放電
を行わせるようにしている。In FIG. 15, reference numeral 6 designates a bottomed rectangular tubular battery can, which is made of metal and has a power generating element 7 built therein. The power generation element 7 has a battery can 6 at one pole. Reference numeral 8 is a lid that closes the upper opening of the battery can 6, and an electrode terminal 9 that constitutes the other pole of the power generating element 7 is attached to the lid 8. Reference numeral 10 denotes an overheat protection element installed on the lid 8. The overheat protection element 10 includes a pair of metal terminals 11a and 11b, and one of the pair of metal terminals 11a and 11b is one of the metal terminals 11a. It is electrically connected to the electrode terminal 9, and this connection is made by spot welding. The other metal terminal 11b of the pair of metal terminals 11a and 11b is provided on the side surface of the battery can 6 and provided in the protection circuit 12 that protects the secondary battery from overcharge / overdischarge. One input terminal 1 made of metal
3 is electrically connected, and this connection is also made by spot welding. And again the protection circuit 12
And the battery can 6 are connected by the other metal input terminal 14 provided in the protection circuit 12. Reference numeral 15 denotes an insulating sheet provided from the side surface of the battery can 6 to the lid 8. The insulating sheet 15 includes the battery can 6, the other metal terminal 11b of the overheat protection element 10, the protection circuit 12, and the pair of input terminals 13. , 14 are insulated from each other to prevent a short circuit between the pair of metal terminals 11a and 11b in the overheat protection element 10. Further, the protection circuit 12 is provided with an output terminal, and the secondary battery is enclosed in an insulating case or the like and only the output terminal is exposed to form a battery pack, and the output terminal is connected to an external device. It is designed to charge and discharge.
【０００７】このような構成の二次電池では、保護回路
１２により、過充電、過放電を防止することができる。
しかし、この保護回路１２に異常が発生し、過充電、過
放電による異常発熱が発生した場合は、この異常発熱を
過熱保護素子１０が感知し、そしてこの過熱保護素子１
０が溶断するため、二次電池への放電電流または充電電
流は遮断される。これにより、二次電池の異常発熱を停
止させることができるものである。In the secondary battery having such a structure, the protection circuit 12 can prevent overcharge and overdischarge.
However, when an abnormality occurs in the protection circuit 12 and abnormal heat generation due to overcharge and overdischarge occurs, the overheat protection element 10 senses this abnormal heat generation, and the overheat protection element 1
Since 0 melts, the discharge current or charge current to the secondary battery is cut off. Thereby, abnormal heat generation of the secondary battery can be stopped.
【０００８】なお、この出願の発明に関連する先行技術
文献情報としては、例えば、特許文献１が知られてい
る。As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
【０００９】[0009]
【特許文献１】特開２００１−１９６０４８号公報[Patent Document 1] JP 2001-196048 A
【００１０】[0010]
【発明が解決しようとする課題】しかしながら、上記従
来の過熱保護素子を用いた二次電池においては、過熱保
護素子１０と電池缶６を絶縁するための絶縁シート１５
を設置する必要があるため、生産性が劣るという課題を
有していた。また、電池缶６の上方開口部を閉塞する蓋
８に過熱保護素子１０を設置するとともに、電池缶６の
側面に保護回路１２を設置する構成としているため、こ
の二次電池を絶縁ケース等に封入してパック電池を構成
した場合は、体積が大きくなって小型化が困難であると
いう課題を有していた。However, in the secondary battery using the above-mentioned conventional overheat protection element, the insulating sheet 15 for insulating the overheat protection element 10 and the battery can 6 from each other.
Therefore, there was a problem that productivity was inferior. Further, since the overheat protection element 10 is installed on the lid 8 that closes the upper opening of the battery can 6, and the protection circuit 12 is installed on the side surface of the battery can 6, this secondary battery is installed in an insulating case or the like. In the case of encapsulating the battery pack, there is a problem that the volume is large and it is difficult to reduce the size.
【００１１】本発明は上記従来の課題を解決するもの
で、絶縁シートを別個に設置することなく、二次電池の
電池缶に対して絶縁状態で容易に取り付けることができ
る過熱保護素子を提供するとともに、二次電池を絶縁ケ
ース等に封入してパック電池を構成した場合において
も、体積を小さくできて小型化が図れる二次電池を提供
することを目的とするものである。The present invention solves the above-mentioned conventional problems, and provides an overheat protection element which can be easily attached to a battery can of a secondary battery in an insulated state without separately installing an insulating sheet. At the same time, it is an object of the present invention to provide a secondary battery in which the volume can be reduced and the size can be reduced even when the secondary battery is enclosed in an insulating case or the like to form a battery pack.
【００１２】[0012]
【課題を解決するための手段】上記目的を達成するため
に、本発明は以下の構成を有するものである。In order to achieve the above object, the present invention has the following constitution.
【００１３】本発明の請求項１に記載の発明は、一対の
金属端子を取り付けた第１の絶縁フィルムと、前記第１
の絶縁フィルムの上方に位置して前記一対の金属端子の
先端部間に接続された可溶合金と、前記可溶合金に塗布
されたフラックスと、前記可溶合金の上方に位置し、か
つ前記第１の絶縁フィルムに封止により取り付けられる
第２の絶縁フィルムとを備え、前記一対の金属端子のう
ち、いずれか一方の金属端子の片面に絶縁層を設けた過
熱保護素子であって、この過熱保護素子の構成によれ
ば、一対の金属端子のうち、いずれか一方の金属端子の
片面に絶縁層を設けているため、この過熱保護素子を二
次電池の電池缶に取り付ける場合、一対の金属端子のう
ち、一方の金属端子を二次電池の電池缶あるいは電極端
子に接続し、かつ絶縁層を設けた他方の金属端子は絶縁
層を二次電池の電池缶に当接させることにより、他方の
金属端子は絶縁層を介して二次電池の電池缶と絶縁され
ることになり、これにより、従来のように絶縁シートを
別個に設置するという必要はなくなり、また過熱保護素
子における一対の金属端子間も短絡させることなく、過
熱保護素子を二次電池の電池缶に容易に取り付けること
ができるという作用を有するものである。The invention according to claim 1 of the present invention comprises: a first insulating film having a pair of metal terminals attached thereto;
Of the fusible alloy located above the insulating film and connected between the tip portions of the pair of metal terminals, the flux applied to the fusible alloy, and located above the fusible alloy, and An overheat protection element comprising a first insulating film and a second insulating film attached by sealing, wherein an insulating layer is provided on one surface of one of the pair of metal terminals. According to the configuration of the overheat protection element, since the insulating layer is provided on one surface of one of the metal terminals of the pair of metal terminals, when the overheat protection element is attached to the battery can of the secondary battery, Among the metal terminals, one of the metal terminals is connected to the battery can or the electrode terminal of the secondary battery, and the other metal terminal provided with the insulating layer is brought into contact with the insulating layer to the battery can of the secondary battery, The other metal terminal has an insulating layer As a result, it is insulated from the battery can of the secondary battery, which eliminates the need to install an insulating sheet separately as in the conventional case, and also does not short-circuit between the pair of metal terminals in the overheat protection element. The overheat protection element has the effect of being easily attached to the battery can of the secondary battery.
【００１４】本発明の請求項２に記載の発明は、特に、
絶縁層を熱可塑性樹脂で構成したもので、この構成によ
れば、絶縁層を熱可塑性樹脂で構成しているため、この
絶縁層を一対の金属端子における一方の金属端子の片面
に形成する場合は、熱可塑性樹脂のフィルムを金属端子
に密着させ、そして金属端子を加熱することにより、熱
可塑性樹脂のフィルムを熱溶着させて絶縁層を形成する
ことができるもので、これにより、接着剤等を用いずに
絶縁層の形成が可能となるため、生産性が良好になると
いう作用を有するものである。The invention according to claim 2 of the present invention is
When the insulating layer is made of a thermoplastic resin and the insulating layer is made of a thermoplastic resin according to this configuration, when the insulating layer is formed on one surface of one of the pair of metal terminals, Is a film in which a thermoplastic resin film is adhered to a metal terminal, and the metal terminal is heated to heat-weld the thermoplastic resin film to form an insulating layer. Since the insulating layer can be formed without using, it has an effect of improving productivity.
【００１５】本発明の請求項３に記載の発明は、特に、
絶縁層を第１の絶縁フィルムと一体に構成したもので、
この構成によれば、第１の絶縁フィルムと絶縁層の形成
を同時に行うことができるため、生産性が良好になると
いう作用を有するものである。The invention according to claim 3 of the present invention is
The insulating layer is integrally formed with the first insulating film,
According to this structure, since the first insulating film and the insulating layer can be formed at the same time, the productivity is improved.
【００１６】本発明の請求項４に記載の発明は、特に、
絶縁層を第２の絶縁フィルムと一体に構成したもので、
この構成によれば、第２の絶縁フィルムと絶縁層の形成
を同時に行うことができるため、生産性が良好になると
いう作用を有するものである。The invention according to claim 4 of the present invention is
The insulating layer is integrally formed with the second insulating film,
According to this structure, since the second insulating film and the insulating layer can be formed at the same time, it has an effect of improving productivity.
【００１７】本発明の請求項５に記載の発明は、一対の
金属端子の各端部の一部が下面から上面に表出するよう
に前記一対の金属端子を取り付けた第１の絶縁フィルム
と、前記第１の絶縁フィルムの上方に位置して前記一対
の金属端子の先端部間に接続された可溶合金と、前記可
溶合金に塗布されたフラックスと、前記可溶合金の上方
に位置し、かつ前記第１の絶縁フィルムに封止により取
り付けられる第２の絶縁フィルムとを備え、前記一対の
金属端子のうち、いずれか一方の金属端子の片面に絶縁
層を設けた過熱保護素子であって、この過熱保護素子の
構成によれば、一対の金属端子の各端部の一部が第１の
絶縁フィルムの下面から上面に表出するように前記一対
の金属端子を第１の絶縁フィルムに取り付けているた
め、第１の絶縁フィルムと一対の金属端子の引っ張り強
度が向上するという作用を有するとともに、一対の金属
端子のうち、いずれか一方の金属端子の片面に絶縁層を
設けているため、この過熱保護素子を二次電池の電池缶
に取り付ける場合、一対の金属端子のうち、一方の金属
端子を二次電池の電池缶あるいは電極端子に接続し、か
つ絶縁層を設けた他方の金属端子は絶縁層を二次電池の
電池缶に当接させることにより、他方の金属端子は絶縁
層を介して二次電池の電池缶と絶縁されることになり、
これにより、従来のように絶縁シートを別個に設置する
という必要はなくなり、また過熱保護素子における一対
の金属端子間も短絡させることなく、過熱保護素子を二
次電池の電池缶に容易に取り付けることができるという
作用を有するものである。According to a fifth aspect of the present invention, there is provided a first insulating film on which the pair of metal terminals are attached so that a part of each end of the pair of metal terminals is exposed from the lower surface to the upper surface. , A fusible alloy located above the first insulating film and connected between the tip portions of the pair of metal terminals, a flux applied to the fusible alloy, and a position above the fusible alloy. And a second insulating film that is attached to the first insulating film by sealing, and an overheat protection element in which an insulating layer is provided on one surface of one of the pair of metal terminals. According to the structure of the overheat protection element, the pair of metal terminals are insulated from each other so that a part of each end of the pair of metal terminals is exposed from the lower surface to the upper surface of the first insulating film. Since it is attached to the film, In addition to having the effect of improving the tensile strength of the metal terminal and the pair of metal terminals, an insulating layer is provided on one surface of one of the metal terminals of the pair of metal terminals. When a battery can is attached to a battery can, the one metal terminal of the pair of metal terminals is connected to the battery can or the electrode terminal of the secondary battery, and the other metal terminal provided with an insulating layer has the insulating layer of the secondary battery. By contacting the battery can, the other metal terminal is insulated from the battery can of the secondary battery through the insulating layer,
This eliminates the need to install an insulating sheet separately as in the conventional case, and easily attaches the overheat protection element to the battery can of the secondary battery without short-circuiting between the pair of metal terminals in the overheat protection element. It has the effect of being able to.
【００１８】本発明の請求項６に記載の発明は、特に、
絶縁層を熱可塑性樹脂で構成したもので、この構成によ
れば、絶縁層を熱可塑性樹脂で構成しているため、この
絶縁層を一対の金属端子における一方の金属端子の片面
に形成する場合、熱可塑性樹脂のフィルムを金属端子に
密着させ、金属端子を加熱して熱可塑性樹脂のフィルム
を溶着させることにより、絶縁層を形成することがで
き、これにより、接着剤等を用いる必要がないため、生
産性が良好になるという作用を有するものである。The invention according to claim 6 of the present invention is
When the insulating layer is made of a thermoplastic resin and the insulating layer is made of a thermoplastic resin according to this configuration, when the insulating layer is formed on one surface of one of the pair of metal terminals, By adhering the thermoplastic resin film to the metal terminal and heating the metal terminal to fuse the thermoplastic resin film, the insulating layer can be formed, thereby eliminating the need to use an adhesive or the like. Therefore, it has the effect of improving productivity.
【００１９】本発明の請求項７に記載の発明は、特に、
絶縁層を第１の絶縁フィルムと一体に構成したもので、
この構成によれば、第１の絶縁フィルムと絶縁層の形成
を同時に行うことができるため、生産性が良好になると
いう作用を有するものである。The invention according to claim 7 of the present invention is
The insulating layer is integrally formed with the first insulating film,
According to this structure, since the first insulating film and the insulating layer can be formed at the same time, the productivity is improved.
【００２０】本発明の請求項８に記載の発明は、特に、
絶縁層を第２の絶縁フィルムと一体に構成したもので、
この構成によれば、第２の絶縁フィルムと絶縁層の形成
を同時に行うことができるため、生産性が良好になると
いう作用を有するものである。The invention according to claim 8 of the present invention is
The insulating layer is integrally formed with the second insulating film,
According to this structure, since the second insulating film and the insulating layer can be formed at the same time, it has an effect of improving productivity.
【００２１】本発明の請求項９に記載の発明は、特に、
先端部間に可溶合金を接続する一対の金属端子のうち、
いずれか一方の金属端子を第２の絶縁フィルムの上方に
位置するように折り曲げたもので、この構成によれば、
過熱保護素子を二次電池の電池缶に取り付ける場合、一
対の金属端子のうち、一方の金属端子は二次電池の電池
缶あるいは電極端子に接続するが、他方の金属端子は第
２の絶縁フィルムの上方に位置するように折り曲げられ
ているため、他方の金属端子が二次電池の電池缶に接触
するということはなくなり、これにより、他方の金属端
子は二次電池の電池缶と絶縁されるため、従来のように
絶縁シートを別個に設置するという必要はなくなり、ま
た過熱保護素子における一対の金属端子間も短絡させる
ことなく、過熱保護素子を二次電池の電池缶に容易に取
り付けることができるという作用を有するものである。The invention according to claim 9 of the present invention is
Of the pair of metal terminals that connect the fusible alloy between the tips,
One of the metal terminals is bent so as to be located above the second insulating film. According to this configuration,
When the overheat protection element is attached to the battery can of the secondary battery, one metal terminal of the pair of metal terminals is connected to the battery can or the electrode terminal of the secondary battery, while the other metal terminal is the second insulating film. Since it is bent so as to be located above, the other metal terminal does not come into contact with the battery can of the secondary battery, and thus the other metal terminal is insulated from the battery can of the secondary battery. Therefore, it is not necessary to separately install an insulating sheet as in the conventional case, and the overheat protection element can be easily attached to the battery can of the secondary battery without short-circuiting between the pair of metal terminals in the overheat protection element. It has the effect of being able to.
【００２２】本発明の請求項１０に記載の発明は、特
に、先端部間に可溶合金を接続する一対の金属端子のう
ち、いずれか一方の金属端子を第１の絶縁フィルムの下
方に位置するように折り曲げたもので、この構成によれ
ば、過熱保護素子を二次電池の電池缶に取り付ける場
合、一対の金属端子のうち、一方の金属端子は二次電池
の電池缶あるいは電極端子に接続するが、他方の金属端
子は第１の絶縁フィルムの下方に位置するように折り曲
げられているため、他方の金属端子が二次電池の電池缶
に接触するということはなくなり、これにより、他方の
金属端子は二次電池の電池缶と絶縁されるため、従来の
ように絶縁シートを別個に設置するという必要はなくな
り、また過熱保護素子における一対の金属端子間も短絡
させることなく、過熱保護素子を二次電池の電池缶に容
易に取り付けることができるという作用を有するもので
ある。According to a tenth aspect of the present invention, in particular, one of the pair of metal terminals for connecting the fusible alloy between the tips is positioned below the first insulating film. According to this configuration, when the overheat protection element is attached to the battery can of the secondary battery, one of the pair of metal terminals is connected to the battery can or the electrode terminal of the secondary battery. However, since the other metal terminal is bent so as to be located below the first insulating film, the other metal terminal does not come into contact with the battery can of the secondary battery. Since the metal terminal of is insulated from the battery can of the secondary battery, there is no need to install an insulating sheet separately as in the conventional case, and the pair of metal terminals in the overheat protection element are not short-circuited. Those having an effect of the protection device can be easily attached to the battery can of the secondary battery.
【００２３】本発明の請求項１１に記載の発明は、特
に、一対の金属端子の各端部が下面から上面に表出する
ように前記一対の金属端子を取り付けた第１の絶縁フィ
ルムを有する過熱保護素子において、先端部間に可溶合
金を接続する一対の金属端子のうち、いずれか一方の金
属端子を第１の絶縁フィルムの下方に位置するように折
り曲げたもので、この構成によれば、過熱保護素子を二
次電池の電池缶に取り付ける場合、一対の金属端子のう
ち、一方の金属端子は二次電池の電池缶あるいは電極端
子に接続するが、他方の金属端子は第１の絶縁フィルム
の下方に位置するように折り曲げられているため、他方
の金属端子が二次電池の電池缶に接触するということは
なくなり、これにより、他方の金属端子は二次電池の電
池缶と絶縁されるため、従来のように絶縁シートを別個
に設置するという必要はなくなり、また過熱保護素子に
おける一対の金属端子間も短絡させることなく、過熱保
護素子を二次電池の電池缶に容易に取り付けることがで
きるという作用を有するものである。The invention according to claim 11 of the present invention has, in particular, a first insulating film on which the pair of metal terminals are attached so that each end of the pair of metal terminals is exposed from the lower surface to the upper surface. In the overheat protection element, one of the pair of metal terminals connecting the fusible alloy between the tip portions is bent so as to be located below the first insulating film. For example, when the overheat protection element is attached to the battery can of the secondary battery, one metal terminal of the pair of metal terminals is connected to the battery can or the electrode terminal of the secondary battery, while the other metal terminal is the first. Since it is bent so that it is located below the insulating film, the other metal terminal does not come into contact with the battery can of the secondary battery, so that the other metal terminal is insulated from the battery can of the secondary battery. Done , It is not necessary to separately install an insulating sheet as in the conventional case, and the overheat protection element can be easily attached to the battery can of the secondary battery without short-circuiting between the pair of metal terminals in the overheat protection element. It has the action.
【００２４】本発明の請求項１２に記載の発明は、電池
缶と、この電池缶に内蔵され、かつ一方の極を電池缶と
した発電要素と、この発電要素の他方の極を構成する電
極端子と、一対の金属素子のうち、一方の金属端子を前
記電池缶あるいは前記電極端子に電気的に接続した過熱
保護素子とを備え、前記過熱保護素子における一対の金
属端子のうち、他方の金属端子の片面に絶縁層を設け、
この絶縁層を前記電池缶に当接させるようにした二次電
池であって、この二次電池の構成によれば、過熱保護素
子における一対の金属端子のうち、他方の金属端子の片
面に絶縁層を設け、この絶縁層を電池缶に当接させるよ
うにしているため、過熱保護素子を二次電池の電池缶に
取り付ける場合、一対の金属端子のうち、一方の金属端
子は二次電池の電池缶あるいは電極端子に接続される
が、他方の金属端子は絶縁層を介して二次電池の電池缶
と絶縁されることになり、これにより、従来のように絶
縁シートを別個に設置することなく、過熱保護素子を電
池缶に対して絶縁した状態で二次電池に容易に取り付け
ることができるという作用を有するものである。According to a twelfth aspect of the present invention, there is provided a battery can, a power generating element built in the battery can and having one pole as a battery can, and an electrode constituting the other pole of the power generating element. A terminal and an overheat protection element in which one metal terminal of a pair of metal elements is electrically connected to the battery can or the electrode terminal, and the other metal of the pair of metal terminals in the overheat protection element Provide an insulating layer on one side of the terminal,
A secondary battery in which this insulating layer is brought into contact with the battery can, and according to the configuration of the secondary battery, one of the pair of metal terminals in the overheat protection element is insulated on one surface of the other metal terminal. Since a layer is provided and this insulating layer is brought into contact with the battery can, when attaching the overheat protection element to the battery can of the secondary battery, one of the pair of metal terminals is the metal terminal of the secondary battery. Although it is connected to the battery can or the electrode terminal, the other metal terminal is insulated from the battery can of the secondary battery through the insulating layer, which allows the insulating sheet to be installed separately as in the conventional case. In other words, the overheat protection element can be easily attached to the secondary battery while being insulated from the battery can.
【００２５】本発明の請求項１３に記載の発明は、電池
缶と、この電池缶に内蔵され、かつ一方の極を電池缶と
した発電要素と、この発電要素の他方の極を構成する電
極端子と、一対の金属端子のうち、一方の金属端子を前
記電池缶に電気的に接続した過熱保護素子と、この過熱
保護素子における一対の金属端子のうち、他方の金属端
子と前記電極端子との間に設けられ、かつ二次電池を過
充電・過放電等から保護する保護回路とを備え、前記過
熱保護素子における一対の金属端子のうち、他方の金属
端子の片面に絶縁層を設け、この絶縁層を前記電池缶に
当接させるようにした二次電池であって、この二次電池
の構成によれば、二次電池を過充電・過放電等から保護
する保護回路を、過熱保護素子における一対の金属端子
のうち、他方の金属端子と、発電要素の他方の極を構成
する電極端子との間に設けるとともに、過熱保護素子を
二次電池の電池缶に取り付けているため、この二次電池
は過熱保護素子と保護回路の双方で保護されることにな
り、これにより、二次電池の安全性をさらに向上させる
ことができ、また、過熱保護素子における一対の金属端
子のうち、他方の金属端子の片面に絶縁層を設け、この
絶縁層を電池缶に当接させるようにしているため、過熱
保護素子を二次電池の電池缶に取り付ける場合、一対の
金属端子のうち、一方の金属端子は二次電池の電池缶あ
るいは電極端子に接続されるが、他方の金属端子は絶縁
層を介して二次電池の電池缶と絶縁されることになり、
これにより、従来のように絶縁シートを別個に設置する
ことなく、過熱保護素子を電池缶に対して絶縁した状態
で二次電池に容易に取り付けることができるという作用
を有するものである。According to a thirteenth aspect of the present invention, there is provided a battery can, a power generating element built in the battery can and having one pole as a battery can, and an electrode constituting the other pole of the power generating element. A terminal, an overheat protection element in which one of the pair of metal terminals is electrically connected to the battery can, and a pair of metal terminals in the overheat protection element, the other metal terminal and the electrode terminal. And a protective circuit that protects the secondary battery from overcharging / overdischarging, etc., of the pair of metal terminals in the overheat protection element, an insulating layer is provided on one surface of the other metal terminal, A secondary battery in which this insulating layer is brought into contact with the battery can. According to the configuration of the secondary battery, a protection circuit for protecting the secondary battery from overcharging / overdischarging is provided with overheat protection. Gold of the other of the pair of metal terminals in the element Since the overheat protection element is installed between the terminal and the electrode terminal that constitutes the other pole of the power generation element, and the overheat protection element is attached to the battery can of the secondary battery, this secondary battery has both the overheat protection element and the protection circuit. By this, it is possible to further improve the safety of the secondary battery, and also to provide an insulating layer on one surface of the other metal terminal of the pair of metal terminals in the overheat protection element, Since this insulating layer is brought into contact with the battery can, when attaching the overheat protection element to the battery can of the secondary battery, one of the pair of metal terminals is the metal can or electrode of the secondary battery. Although it is connected to the terminal, the other metal terminal will be insulated from the battery can of the secondary battery through the insulating layer,
Thus, the overheat protection element can be easily attached to the secondary battery in a state of being insulated from the battery can without separately installing an insulating sheet as in the conventional case.
【００２６】本発明の請求項１４に記載の発明は、特
に、二次電池を過充電・過放電等から保護する保護回路
を、電池缶との間に過熱保護素子が収納されるように配
設し、かつこの保護回路を、前記過熱保護素子における
一対の金属端子のうち、他方の金属端子と、発電要素の
他方の極を構成する電極端子とにそれぞれ電気的に接続
したもので、この構成によれば、過熱保護素子と保護回
路の双方が電池缶の一面上に配置されるため、この二次
電池を絶縁ケース等に封入してパック電池を構成した場
合においても、体積を小さくできて小型化が図れるとい
う作用を有するものである。According to a fourteenth aspect of the present invention, in particular, a protection circuit for protecting the secondary battery from overcharging / overdischarging is arranged so that the overheat protection element is housed between the battery can and the battery can. Which is provided and electrically connected to the other metal terminal of the pair of metal terminals in the overheat protection element and to the electrode terminal forming the other pole of the power generation element, respectively. According to the configuration, both the overheat protection element and the protection circuit are arranged on one surface of the battery can, so that the volume can be reduced even when the secondary battery is enclosed in an insulating case or the like to form a battery pack. It has the effect of achieving miniaturization.
【００２７】本発明の請求項１５に記載の発明は、特
に、二次電池を過充電・過放電等から保護する保護回路
と、発電要素の他方の極を構成する電極端子および過熱
保護素子における他方の金属端子との接続部分を、それ
ぞれ折り曲げることにより、保護回路と電池缶との間に
過熱保護素子を収納するようにしたもので、この構成に
よれば、過熱保護素子と保護回路の双方が電池缶の一面
上に配置されるため、この二次電池を絶縁ケース等に封
入してパック電池を構成した場合においても、体積を小
さくできて小型化が容易になるとともに、保護回路の位
置決めが容易となるため、生産性が向上するという作用
を有するものである。According to a fifteenth aspect of the present invention, in particular, in a protection circuit for protecting the secondary battery from overcharging / overdischarging, etc., an electrode terminal and an overheat protection element constituting the other pole of the power generating element. The connection part with the other metal terminal is bent so that the overheat protection element is housed between the protection circuit and the battery can. According to this configuration, both the overheat protection element and the protection circuit are accommodated. Since it is placed on one surface of the battery can, even when this secondary battery is enclosed in an insulating case or the like to form a battery pack, the volume can be made smaller and miniaturization is facilitated, and the positioning of the protective circuit Therefore, it has the effect of improving productivity.
【００２８】本発明の請求項１６に記載の発明は、特
に、過熱保護素子を温度ヒューズで構成したもので、こ
の構成によれば、温度ヒューズが一度電流を遮断すれば
再度通電されることがないものであるため、二次電池の
安全性を向上させることができるという作用を有するも
のである。According to a sixteenth aspect of the present invention, in particular, the overheat protection element is constituted by a temperature fuse. According to this constitution, the temperature fuse can be re-energized once the current is cut off. Since it is not present, it has the effect of improving the safety of the secondary battery.
【００２９】本発明の請求項１７に記載の発明は、電池
缶と、この電池缶に内蔵され、かつ一方の極を電池缶と
した発電要素と、この発電要素の他方の極を構成する電
極端子と、一対の金属端子のうち、一方の金属端子が前
記電池缶に電気的に接続され、かつ他方の金属端子が過
熱保護素子の上方に位置するように折り曲げられた過熱
保護素子とを備えた二次電池であって、この二次電池の
構成によれば、過熱保護素子を二次電池の電池缶に取り
付ける場合、一対の金属端子のうち、一方の金属端子は
二次電池の電池缶あるいは電極端子に接続するが、他方
の金属端子は過熱保護素子の上方に位置するように折り
曲げられているため、他方の金属端子が二次電池の電池
缶に接触するということはなくなり、これにより、他方
の金属端子は二次電池の電池缶と絶縁されるため、従来
のように絶縁シートを別個に設置することなく、過熱保
護素子を電池缶に対して絶縁した状態で二次電池に容易
に取り付けることができるという作用を有するものであ
る。According to a seventeenth aspect of the present invention, there is provided a battery can, a power generating element built in the battery can and having one pole as a battery can, and an electrode constituting the other pole of the power generating element. A terminal and one of a pair of metal terminals, one of which is electrically connected to the battery can, and the other of which is bent so that the metal terminal is located above the overheat protection element. According to the structure of this secondary battery, when the overheat protection element is attached to the battery can of the secondary battery, one metal terminal of the pair of metal terminals is the battery can of the secondary battery. Alternatively, it is connected to the electrode terminal, but since the other metal terminal is bent so as to be located above the overheat protection element, the other metal terminal does not come into contact with the battery can of the secondary battery. , The other metal terminal is secondary Since it is insulated from the battery can of the pond, the effect that the overheat protection element can be easily attached to the secondary battery in a state of being insulated from the battery can without installing an insulating sheet separately as in the past I have.
【００３０】本発明の請求項１８に記載の発明は、電池
缶と、この電池缶に内蔵され、かつ一方の極を電池缶と
した発電要素と、この発電要素の他方の極を構成する電
極端子と、一対の金属端子のうち、一方の金属端子が前
記電池缶に電気的に接続され、かつ他方の金属端子が過
熱保護素子の上方に位置するように折り曲げられた過熱
保護素子と、前記他方の金属端子と電極端子との間に設
けられ、かつ二次電池を過充電・過放電等から保護する
保護回路とを備えた二次電池であって、この二次電池の
構成によれば、二次電池を過充電・過放電等から保護す
る保護回路を、過熱保護素子における一対の金属端子の
うち、他方の金属端子と、発電要素の他方の極を構成す
る電極端子との間に設けるとともに、過熱保護素子を二
次電池の電池缶に取り付けているため、この二次電池は
過熱保護素子と保護回路の双方で保護されることにな
り、これにより、二次電池の安全性をさらに向上させる
ことができ、また、過熱保護素子における一対の金属端
子のうち、他方の金属端子は過熱保護素子の上方に位置
するように折り曲げているため、過熱保護素子を二次電
池の電池缶に取り付ける場合、他方の金属端子が二次電
池の電池缶に接触するということはなくなり、これによ
り、他方の金属端子は二次電池の電池缶と絶縁されるた
め、過熱保護素子も電池缶に対して絶縁した状態で二次
電池に容易に取り付けることができるという作用を有す
るものである。The invention according to claim 18 of the present invention is a battery can, a power generating element built in the battery can and having one pole as a battery can, and an electrode constituting the other pole of this power generating element. A terminal and a pair of metal terminals, one metal terminal is electrically connected to the battery can, and the other metal terminal is bent so as to be located above the overheat protection element, and A secondary battery, which is provided between the other metal terminal and the electrode terminal and includes a protection circuit that protects the secondary battery from overcharge, overdischarge, and the like, and has the configuration of the secondary battery. , A protective circuit for protecting the secondary battery from overcharging / overdischarging is provided between the other metal terminal of the pair of metal terminals in the overheat protection element and the electrode terminal forming the other pole of the power generating element. In addition to installing the overheat protection element on the battery can of the secondary battery The secondary battery is protected by both the overheat protection device and the protection circuit because it is installed, which can further improve the safety of the secondary battery. Since the other metal terminal of the pair of metal terminals is bent so as to be located above the overheat protection element, when attaching the overheat protection element to the battery can of the secondary battery, the other metal terminal is Since it does not come into contact with the battery can and the other metal terminal is insulated from the battery can of the secondary battery, the overheat protection element is easily attached to the secondary battery while being insulated from the battery can. It has the effect of being able to.
【００３１】本発明の請求項１９に記載の発明は、特
に、二次電池を過充電・過放電等から保護する保護回路
を、電池缶との間に過熱保護素子が収納されるように配
設し、かつこの保護回路を、前記過熱保護素子における
一対の金属端子のうち、他方の金属端子と、発電要素の
他方の極を構成する電極端子とにそれぞれ電気的に接続
したもので、この構成によれば、過熱保護素子と保護回
路の双方が電池缶の一面上に配置されるため、この二次
電池を絶縁ケース等に封入してパック電池を構成した場
合においても、体積を小さくできて小型化が図れるとい
う作用を有するものである。According to a nineteenth aspect of the present invention, in particular, a protection circuit for protecting the secondary battery from overcharging / overdischarging is arranged so that an overheat protection element is housed between the battery can and the battery can. Which is provided and electrically connected to the other metal terminal of the pair of metal terminals in the overheat protection element and to the electrode terminal forming the other pole of the power generation element, respectively. According to the configuration, both the overheat protection element and the protection circuit are arranged on one surface of the battery can, so that the volume can be reduced even when the secondary battery is enclosed in an insulating case or the like to form a battery pack. It has the effect of achieving miniaturization.
【００３２】本発明の請求項２０に記載の発明は、特
に、二次電池を過充電・過放電等から保護する保護回路
と、発電要素の他方の極を構成する電極端子および過熱
保護素子における他方の金属端子との接続部分を、それ
ぞれ折り曲げることにより、保護回路と電池缶との間に
過熱保護素子を収納するようにしたもので、この構成に
よれば、過熱保護素子と保護回路の双方が電池缶の一面
上に配置されるため、この二次電池を絶縁ケース等に封
入してパック電池を構成した場合においても、体積を小
さくできて小型化が容易になるとともに、保護回路の位
置決めが容易となるため、生産性が向上するという作用
を有するものである。According to a twentieth aspect of the present invention, in particular, in a protection circuit for protecting the secondary battery from overcharging / overdischarging, etc., an electrode terminal and an overheat protection element constituting the other pole of the power generating element. The connection part with the other metal terminal is bent so that the overheat protection element is housed between the protection circuit and the battery can. According to this configuration, both the overheat protection element and the protection circuit are accommodated. Since it is placed on one surface of the battery can, even when this secondary battery is enclosed in an insulating case or the like to form a battery pack, the volume can be made smaller and miniaturization is facilitated, and the positioning of the protective circuit Therefore, it has the effect of improving productivity.
【００３３】本発明の請求項２１に記載の発明は、特
に、過熱保護素子を温度ヒューズで構成したもので、こ
の構成によれば、温度ヒューズが一度電流を遮断すれば
再度通電されることがないものであるため、二次電池の
安全性を向上させることができるという作用を有するも
のである。According to a twenty-first aspect of the present invention, in particular, the overheat protection element is composed of a temperature fuse. According to this structure, once the current is cut off, the temperature fuse can be re-energized. Since it is not present, it has the effect of improving the safety of the secondary battery.
【００３４】[0034]
【発明の実施の形態】（実施の形態１）図１（ａ）は本
発明の実施の形態１における温度ヒューズの一部切欠上
面図、図１（ｂ）は図１（ａ）におけるＡ−Ａ線断面図
である。DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) FIG. 1 (a) is a partially cutaway top view of a thermal fuse according to Embodiment 1 of the present invention, and FIG. 1 (b) is A- in FIG. 1 (a). It is an A line sectional view.
【００３５】図１（ａ），（ｂ）において、２１はポリ
エチレンテレフタレート、ポリエチレンナフタレート等
の熱可塑性樹脂により構成されたシート状の第１の絶縁
フィルムで、この第１の絶縁フィルム２１には、第１の
絶縁フィルム２１より幅が狭い一対の金属端子２２を取
り付けている。前記一対の金属端子２２は帯状または線
状をなし、かつ銅、ニッケル等の導電性の良好な金属の
表面にはんだ、錫、銅等のめっきを施すことにより構成
されている。２３は前記第１の絶縁フィルム２１の上方
に位置して前記一対の金属端子２２の先端部間に接続さ
れた可溶合金で、この可溶合金２３は、錫、鉛、亜鉛、
ビスマス、インジウム、カドミウム、銀、銅のいずれか
１つの金属あるいは複数の金属を合金化したもので構成
されている。２４は可溶合金２３の周囲に塗布されたフ
ラックスで、このフラックス２４は主成分がロジンから
なる樹脂により構成され、かつこのフラックス２４の色
数は４〜１６となっている。２５は前記可溶合金２３の
上方に位置し、かつ前記第１の絶縁フィルム２１との間
に内部空間を形成するように前記第１の絶縁フィルム２
１に封止により取り付けられるシート状の第２の絶縁フ
ィルムで、この第２の絶縁フィルム２５を構成する材料
は前記第１の絶縁フィルム２１と同じものが好ましい。
このように第１の絶縁フィルム２１と第２の絶縁フィル
ム２５とで可溶合金２３を覆い、かつ可溶合金２３が設
けられた部分を除いた箇所において、第１の絶縁フィル
ム２１の外周部と第２の絶縁フィルム２５の外周部を封
止によって固着することにより可溶合金２３を密閉し、
この可溶合金２３の劣化を防止している。In FIGS. 1A and 1B, 21 is a sheet-shaped first insulating film made of a thermoplastic resin such as polyethylene terephthalate or polyethylene naphthalate. , A pair of metal terminals 22 having a width narrower than that of the first insulating film 21 are attached. The pair of metal terminals 22 have a strip shape or a linear shape, and are formed by plating a surface of a metal having good conductivity such as copper or nickel with solder, tin, copper or the like. Reference numeral 23 denotes a fusible alloy that is located above the first insulating film 21 and is connected between the tip portions of the pair of metal terminals 22, and the fusible alloy 23 includes tin, lead, zinc,
It is composed of any one metal of bismuth, indium, cadmium, silver and copper or an alloy of a plurality of metals. Reference numeral 24 denotes a flux applied around the fusible alloy 23. The flux 24 is composed of a resin whose main component is rosin, and the flux 24 has a color number of 4 to 16. 25 is located above the fusible alloy 23 and forms the internal space between the first insulating film 2 and the first insulating film 2;
It is preferable that the sheet-shaped second insulating film attached to the first insulating film 1 be the same material as the first insulating film 21 as the material forming the second insulating film 25.
In this manner, the outer peripheral portion of the first insulating film 21 is covered with the first insulating film 21 and the second insulating film 25 at the portion excluding the portion where the soluble alloy 23 is provided and the soluble alloy 23 is provided. And the outer peripheral portion of the second insulating film 25 are fixed by sealing to seal the fusible alloy 23,
The deterioration of the fusible alloy 23 is prevented.
【００３６】また、前記第１の絶縁フィルム２１、第２
の絶縁フィルム２５のうち、少なくとも一方は透明また
はフラックス２４の形状が判別できる光透過性を有する
半透明の絶縁フィルムで構成されている。２６は前記一
対の金属端子２２における一方の金属端子２２の片面を
覆うように設けた絶縁層である。この場合、絶縁層２６
は、一般には板状の絶縁材を接着剤により一方の金属端
子２２の片面に固着することにより形成できるものであ
るが、本発明の実施の形態１においては、絶縁層２６を
ポリエチレンテレフタレート、ポリエチレンナフタレー
ト等の熱可塑性樹脂により構成している。このように絶
縁層２６を熱可塑性樹脂で構成することにより、この絶
縁層２６を一対の金属端子２２における一方の金属端子
２２の片面に形成する場合は、熱可塑性樹脂のフィルム
を金属端子２２に密着させ、そして金属端子２２を加熱
することにより、熱可塑性樹脂のフィルムを熱溶着させ
て絶縁層２６を形成することができるもので、これによ
り、接着剤等を用いずに絶縁層２６の形成が可能となる
ため、生産性が良好となるものである。The first insulating film 21 and the second insulating film 21
At least one of the insulating films 25 is made of a transparent or semitransparent insulating film having a light-transmitting property such that the shape of the flux 24 can be discriminated. Reference numeral 26 is an insulating layer provided so as to cover one surface of one metal terminal 22 of the pair of metal terminals 22. In this case, the insulating layer 26
Is generally formed by fixing a plate-shaped insulating material to one surface of one metal terminal 22 with an adhesive, but in the first embodiment of the present invention, the insulating layer 26 is made of polyethylene terephthalate or polyethylene. It is made of a thermoplastic resin such as naphthalate. By forming the insulating layer 26 from the thermoplastic resin in this manner, when the insulating layer 26 is formed on one surface of the one metal terminal 22 of the pair of metal terminals 22, a thermoplastic resin film is formed on the metal terminal 22. A film of a thermoplastic resin can be heat-welded to form the insulating layer 26 by bringing them into close contact with each other and heating the metal terminal 22, whereby the insulating layer 26 is formed without using an adhesive or the like. Therefore, the productivity is improved.
【００３７】（実施の形態２）図２は本発明の実施の形
態２における温度ヒューズの断面図である。(Second Embodiment) FIG. 2 is a sectional view of a thermal fuse according to a second embodiment of the present invention.
【００３８】本発明の実施の形態２における温度ヒュー
ズが、上記した本発明の実施の形態１における温度ヒュ
ーズと異なる点は、絶縁層２６ａを第１の絶縁フィルム
２１と一体に構成した点である。この構成によれば、第
１の絶縁フィルム２１と絶縁層２６ａの形成を同時に行
うことができるため、生産性が良好となるものである。The thermal fuse according to the second embodiment of the present invention is different from the thermal fuse according to the first embodiment of the present invention described above in that the insulating layer 26a is formed integrally with the first insulating film 21. . According to this structure, the first insulating film 21 and the insulating layer 26a can be formed at the same time, and thus the productivity is improved.
【００３９】（実施の形態３）図３は本発明の実施の形
態３における温度ヒューズの断面図である。(Third Embodiment) FIG. 3 is a sectional view of a thermal fuse according to a third embodiment of the present invention.
【００４０】本発明の実施の形態３における温度ヒュー
ズが、上記した本発明の実施の形態１における温度ヒュ
ーズと異なる点は、絶縁層２６ｂを第２の絶縁フィルム
２５と一体に構成した点である。この構成によれば、第
２の絶縁フィルム２５と絶縁層２６ｂの形成を同時に行
うことができるため、生産性が良好となるものである。The thermal fuse according to the third embodiment of the present invention is different from the thermal fuse according to the first embodiment of the present invention described above in that the insulating layer 26b is integrally formed with the second insulating film 25. . According to this configuration, the second insulating film 25 and the insulating layer 26b can be formed at the same time, and thus the productivity is improved.
【００４１】（実施の形態４）図４は本発明の実施の形
態４における温度ヒューズの断面図である。(Fourth Embodiment) FIG. 4 is a sectional view of a thermal fuse according to a fourth embodiment of the present invention.
【００４２】本発明の実施の形態４における温度ヒュー
ズが、上記した本発明の実施の形態１における温度ヒュ
ーズと異なる点は、一対の金属端子２２における一方の
金属端子２２の片面に絶縁層２６ｂを設ける代わりに、
一方の金属端子２２を第２の絶縁フィルム２５の上方に
位置するように折り曲げた点である。この構成によれ
ば、この温度ヒューズを第１の絶縁フィルム２１が電池
缶に当接するように二次電池に取り付けた場合、一対の
金属端子２２のうち、一方の金属端子２２は二次電池の
電池缶あるいは電極端子に接続するが、他方の金属端子
２２は第２の絶縁フィルム２５の上方に位置するように
折り曲げられているため、他方の金属端子２２が二次電
池の電池缶に接触するということはなくなり、これによ
り、他方の金属端子２２は二次電池の電池缶と絶縁され
るため、従来のように絶縁シートを別個に設置するとい
う必要はなくなり、また温度ヒューズの一対の金属端子
２２間も短絡させることなく、温度ヒューズを二次電池
の電池缶に容易に取り付けることができるものである。The thermal fuse according to the fourth embodiment of the present invention is different from the thermal fuse according to the first embodiment of the present invention described above in that the insulating layer 26b is provided on one surface of one metal terminal 22 of the pair of metal terminals 22. Instead of providing
This is a point where one metal terminal 22 is bent so as to be located above the second insulating film 25. According to this configuration, when the thermal fuse is attached to the secondary battery so that the first insulating film 21 is in contact with the battery can, one of the pair of metal terminals 22 is connected to the secondary battery. Although connected to the battery can or the electrode terminal, since the other metal terminal 22 is bent so as to be located above the second insulating film 25, the other metal terminal 22 contacts the battery can of the secondary battery. As a result, the other metal terminal 22 is insulated from the battery can of the secondary battery, so that it is not necessary to separately install an insulating sheet as in the conventional case, and the pair of metal terminals of the thermal fuse is eliminated. The thermal fuse can be easily attached to the battery can of the secondary battery without short-circuiting between 22 as well.
【００４３】（実施の形態５）図５は本発明の実施の形
態５における温度ヒューズの断面図である。(Fifth Embodiment) FIG. 5 is a sectional view of a thermal fuse according to a fifth embodiment of the present invention.
【００４４】本発明の実施の形態５における温度ヒュー
ズが、上記した本発明の実施の形態１における温度ヒュ
ーズと異なる点は、一対の金属端子２２における一方の
金属端子２２の片面に絶縁層２６ｂを設ける代わりに、
一方の金属端子２２を第１の絶縁フィルム２１の下方に
位置するように折り曲げた点である。この構成によれ
ば、この温度ヒューズを第２の絶縁フィルム２５が電池
缶に当接するように二次電池に取り付けた場合、一対の
金属端子２２のうち、一方の金属端子２２は二次電池の
電池缶あるいは電極端子に接続するが、他方の金属端子
２２は第１の絶縁フィルム２１の下方に位置するように
折り曲げられているため、他方の金属端子２２が二次電
池の電池缶に接触するということはなくなり、これによ
り、他方の金属端子２２は二次電池の電池缶と絶縁され
るため、従来のように絶縁シートを別個に設置するとい
う必要はなくなり、また温度ヒューズの一対の金属端子
２２間も短絡させることなく、温度ヒューズを二次電池
の電池缶に容易に取り付けることができるものである。The thermal fuse according to the fifth embodiment of the present invention is different from the thermal fuse according to the first embodiment of the present invention described above in that the insulating layer 26b is provided on one surface of one metal terminal 22 of the pair of metal terminals 22. Instead of providing
This is a point where one of the metal terminals 22 is bent so as to be located below the first insulating film 21. According to this configuration, when this thermal fuse is attached to the secondary battery so that the second insulating film 25 contacts the battery can, one of the pair of metal terminals 22 is connected to the secondary battery. Although connected to the battery can or the electrode terminal, the other metal terminal 22 is bent so as to be positioned below the first insulating film 21, so that the other metal terminal 22 contacts the battery can of the secondary battery. As a result, the other metal terminal 22 is insulated from the battery can of the secondary battery, so that it is not necessary to separately install an insulating sheet as in the conventional case, and the pair of metal terminals of the thermal fuse is eliminated. The thermal fuse can be easily attached to the battery can of the secondary battery without short-circuiting between 22 as well.
【００４５】（実施の形態６）図６（ａ）は本発明の実
施の形態６における温度ヒューズの一部切欠上面図、図
６（ｂ）は図６（ａ）におけるＡ−Ａ線断面図である。(Sixth Embodiment) FIG. 6A is a partially cutaway top view of a thermal fuse according to a sixth embodiment of the present invention, and FIG. 6B is a sectional view taken along line AA in FIG. 6A. Is.
【００４６】図６（ａ），（ｂ）において、３１はポリ
エチレンテレフタレート、ポリエチレンナフタレート等
の樹脂により構成されたシート状の第１の絶縁フィルム
で、この第１の絶縁フィルム３１には、一対の金属端子
３２の各端子の一部が下面から上面に表出するように前
記一対の金属端子３２を取り付けている。前記一対の金
属端子３２は帯状または線状をなし、かつ銅、ニッケル
等の導電性の良好な金属の表面にはんだ、錫、銅等のめ
っきを施すことにより構成されている。３３は前記第１
の絶縁フィルム３１の上方に位置して前記一対の金属端
子３２の先端部間に接続された可溶合金で、この可溶合
金３３は、錫、鉛、亜鉛、ビスマス、インジウム、カド
ミウム、銀、銅のいずれか１つの金属あるいは複数の金
属を合金化したもので構成されている。３４は可溶合金
３３の周囲に塗布されたフラックスで、このフラックス
３４は主成分がロジンからなる樹脂により構成され、か
つこのフラックス３４の色数は４〜１６となっている。
３５は前記可溶合金３３の上方に位置し、かつ前記第１
の絶縁フィルム３１との間に内部空間を形成するように
前記第１の絶縁フィルム３１に封止により取り付けられ
るシート状の第２の絶縁フィルムで、この第２の絶縁フ
ィルム３５を構成する材料は前記第１の絶縁フィルム３
１と同じものが好ましい。このように第１の絶縁フィル
ム３１と第２の絶縁フィルム３５とで可溶合金３３を覆
い、かつ可溶合金３３が設けられた部分を除いた箇所に
おいて、第一の絶縁フィルム３１と第２の絶縁フィルム
３５を封止によって固着することにより可溶合金３３は
密閉し、この可溶合金３３の劣化を防止している。In FIGS. 6A and 6B, 31 is a sheet-shaped first insulating film made of a resin such as polyethylene terephthalate or polyethylene naphthalate. The pair of metal terminals 32 are attached such that a part of each of the metal terminals 32 is exposed from the lower surface to the upper surface. The pair of metal terminals 32 have a strip shape or a linear shape, and are formed by plating a surface of a metal having good conductivity such as copper or nickel with solder, tin, copper or the like. 33 is the first
Is a fusible alloy that is located above the insulating film 31 and is connected between the tip portions of the pair of metal terminals 32. The fusible alloy 33 includes tin, lead, zinc, bismuth, indium, cadmium, silver, It is composed of any one metal of copper or an alloy of a plurality of metals. Reference numeral 34 denotes a flux applied around the fusible alloy 33. The flux 34 is composed of a resin whose main component is rosin, and the flux 34 has a color number of 4 to 16.
35 is located above the fusible alloy 33, and
The sheet-shaped second insulating film which is attached to the first insulating film 31 by sealing so as to form an internal space between the second insulating film and the second insulating film. The first insulating film 3
The same as 1 is preferable. In this manner, the first insulating film 31 and the second insulating film 35 are covered with the fusible alloy 33, and the first insulating film 31 The fusible alloy 33 is hermetically sealed by fixing the insulating film 35 of 1. to prevent deterioration of the fusible alloy 33.
【００４７】また、前記第１の絶縁フィルム３１、第２
の絶縁フィルム３５のうち、少なくとも一方は透明また
はフラックス３４の形状が判別できる光透過性を有する
半透明の絶縁フィルムで構成されている。３６は前記一
対の金属端子３２における一方の金属端子３２の片面を
覆うように設けた絶縁層である。この場合、絶縁層３６
は、一般には板状の絶縁材を接着剤により一方の金属端
子３２の片面に固着することにより形成できるものであ
るが、本発明の実施の形態６においては、絶縁層３６を
ポリエチレンテレフタレート、ポリエチレンナフタレー
ト等の熱可塑性樹脂により構成している。このように絶
縁層３６を熱可塑性樹脂で構成することにより、この絶
縁層３６を一対の金属端子３２における一方の金属端子
３２の片面に形成する場合は、熱可塑性樹脂のフィルム
を金属端子３２に密着させ、そして金属端子３２を加熱
することにより、熱可塑性樹脂のフィルムを熱溶着させ
て絶縁層３６を形成することができるもので、これによ
り、接着剤等を用いずに絶縁層３６の形成が可能となる
ため、生産性が良好となるものである。The first insulating film 31 and the second insulating film 31
At least one of the insulating films 35 is made of a transparent or semitransparent insulating film having a light-transmitting property such that the shape of the flux 34 can be discriminated. Reference numeral 36 denotes an insulating layer provided so as to cover one surface of one metal terminal 32 of the pair of metal terminals 32. In this case, the insulating layer 36
Is generally formed by fixing a plate-shaped insulating material to one surface of one metal terminal 32 with an adhesive, but in the sixth embodiment of the present invention, the insulating layer 36 is made of polyethylene terephthalate or polyethylene. It is made of a thermoplastic resin such as naphthalate. By forming the insulating layer 36 from the thermoplastic resin in this manner, when the insulating layer 36 is formed on one surface of the one metal terminal 32 of the pair of metal terminals 32, a thermoplastic resin film is formed on the metal terminal 32. A film of a thermoplastic resin can be heat-welded to form the insulating layer 36 by bringing them into close contact with each other and heating the metal terminal 32, whereby the insulating layer 36 is formed without using an adhesive or the like. Therefore, the productivity is improved.
【００４８】（実施の形態７）図７は本発明の実施の形
態７における温度ヒューズの断面図である。(Embodiment 7) FIG. 7 is a sectional view of a thermal fuse according to Embodiment 7 of the present invention.
【００４９】本発明の実施の形態７における温度ヒュー
ズが、上記した本発明の実施の形態６における温度ヒュ
ーズと異なる点は、絶縁層３６ａを第１の絶縁フィルム
３１と一体に構成した点である。この構成によれば、第
１の絶縁フィルム３１と絶縁層３６ａの形成を同時に行
うことができるため、生産性が良好となるものである。The thermal fuse according to the seventh embodiment of the present invention is different from the thermal fuse according to the sixth embodiment of the present invention in that the insulating layer 36a is formed integrally with the first insulating film 31. . According to this configuration, the first insulating film 31 and the insulating layer 36a can be formed at the same time, so that productivity is improved.
【００５０】（実施の形態８）図８は本発明の実施の形
態８における温度ヒューズの断面図である。(Embodiment 8) FIG. 8 is a sectional view of a thermal fuse according to Embodiment 8 of the present invention.
【００５１】本発明の実施の形態８における温度ヒュー
ズが、上記した本発明の実施の形態６における温度ヒュ
ーズと異なる点は、絶縁層３６ｂを第２の絶縁フィルム
３５と一体に構成した点である。この構成によれば、第
２の絶縁フィルム３５と絶縁層３６ｂの形成を同時に行
うことができるため、生産性が良好となるものである。The thermal fuse according to the eighth embodiment of the present invention is different from the thermal fuse according to the sixth embodiment of the present invention in that the insulating layer 36b is formed integrally with the second insulating film 35. . According to this structure, the second insulating film 35 and the insulating layer 36b can be formed at the same time, and thus the productivity is improved.
【００５２】（実施の形態９）図９は本発明の実施の形
態９における温度ヒューズの断面図である。(Ninth Embodiment) FIG. 9 is a sectional view of a thermal fuse according to a ninth embodiment of the present invention.
【００５３】本発明の実施の形態９における温度ヒュー
ズが、上記した本発明の実施の形態６における温度ヒュ
ーズと異なる点は、一対の金属端子３２における一方の
金属端子３２の片面に絶縁層３６を設ける代わりに、一
方の金属端子３２を第１の絶縁フィルム３１の下方に位
置するように折り曲げた点である。この構成によれば、
この温度ヒューズを第２の絶縁フィルム３５が電池缶に
当接するように二次電池に取り付けた場合、一対の金属
端子３２のうち、一方の金属端子３２は二次電池の電池
缶あるいは電極端子に接続するが、他方の金属端子３２
は第１の絶縁フィルム３１の下方に位置するように折り
曲げられているため、他方の金属端子３２が二次電池の
電池缶に接触するということはなくなり、これにより、
他方の金属端子３２は二次電池の電池缶と絶縁されるた
め、従来のように絶縁シートを別個に設置するという必
要はなくなり、また温度ヒューズの一対の金属端子３２
間も短絡させることなく、温度ヒューズを二次電池の電
池缶に容易に取り付けることができるものである。The thermal fuse according to the ninth embodiment of the present invention is different from the thermal fuse according to the sixth embodiment of the present invention described above in that the insulating layer 36 is provided on one surface of one metal terminal 32 of the pair of metal terminals 32. Instead of being provided, one of the metal terminals 32 is bent so as to be located below the first insulating film 31. According to this configuration,
When this thermal fuse is attached to the secondary battery so that the second insulating film 35 contacts the battery can, one metal terminal 32 of the pair of metal terminals 32 is a battery can or an electrode terminal of the secondary battery. Connect, but the other metal terminal 32
Is bent so as to be located below the first insulating film 31, the other metal terminal 32 does not come into contact with the battery can of the secondary battery.
Since the other metal terminal 32 is insulated from the battery can of the secondary battery, it is not necessary to separately install an insulating sheet as in the conventional case, and the pair of metal terminals 32 of the thermal fuse are provided.
The thermal fuse can be easily attached to the battery can of the secondary battery without short-circuiting between them.
【００５４】（実施の形態１０）図１０、図１１は本発
明の実施の形態１０における二次電池の一部を切欠した
斜視図である。(Embodiment 10) FIGS. 10 and 11 are perspective views in which a part of the secondary battery according to Embodiment 10 of the present invention is cut away.
【００５５】図１０、図１１において、４１は有底筒状
の電池缶で、この電池缶４１は金属により構成され、か
つこの電池缶４１には発電要素４２を内蔵している。そ
してこの発電要素４２は一方の極を電池缶４１としてい
る。４３は前記電池缶４１の上方開口部を閉塞する金属
製の蓋で、この蓋４３には前記発電要素４２の他方の極
を構成する電極端子４４を取り付けている。この場合、
電極端子４４は前記電池缶４１および蓋４３に対して絶
縁されているものである。４５は前記電極端子４４の近
傍に位置して蓋４３に配設された温度ヒューズからなる
過熱保護素子で、この過熱保護素子４５は平板状の一対
の金属端子４６ａ，４６ｂを有しており、一方の金属端
子４６ａは前記蓋４３に電気的に接続されている。この
場合、一方の金属端子４６ａと蓋４３の接続はスポット
溶接により行っている。また、前記過熱保護素子４５に
おける平板状の一対の金属端子４６ａ，４６ｂのうち、
他方の金属端子４６ｂの片面には熱可塑性樹脂で構成さ
れた絶縁層４７を設け、この絶縁層４７を前記蓋４３に
当接させている。In FIGS. 10 and 11, reference numeral 41 denotes a cylindrical battery can with a bottom, which is made of metal and has a power generating element 42 built therein. The power generating element 42 has a battery can 41 at one pole. Reference numeral 43 denotes a metal lid that closes the upper opening of the battery can 41, and an electrode terminal 44 that constitutes the other pole of the power generating element 42 is attached to the lid 43. in this case,
The electrode terminal 44 is insulated from the battery can 41 and the lid 43. Reference numeral 45 denotes an overheat protection element which is located near the electrode terminal 44 and is provided on the lid 43 and which is a thermal fuse. The overheat protection element 45 has a pair of flat metal terminals 46a and 46b. One metal terminal 46a is electrically connected to the lid 43. In this case, one metal terminal 46a and the lid 43 are connected by spot welding. In addition, of the pair of flat metal terminals 46a and 46b in the overheat protection element 45,
An insulating layer 47 made of a thermoplastic resin is provided on one surface of the other metal terminal 46b, and the insulating layer 47 is brought into contact with the lid 43.
【００５６】４８は上記した構成の二次電池を過充電・
過放電等から保護する保護回路で、この保護回路４８
は、前記発電要素４２の他方の極を構成する電極端子４
４と、過熱保護素子４５における平板状の一対の金属端
子４６ａ，４６ｂのうちの他方の金属端子４６ｂとの間
に設けられ、かつ前記電極端子４４とは平板状の金属か
らなる入力端子４９を介して接続し、さらに前記過熱保
護素子４５における他方の金属端子４６ｂとは平板状の
金属からなる入力端子５０を介して接続している。この
場合、前記電極端子４４と入力端子４９との接続および
蓋４３と他方の金属端子４６ｂ、入力端子５０との接続
はいずれもスポット溶接により行っている。また、前記
保護回路４８は、入力端子４９，５０をそれぞれ折り曲
げることにより、図１１に示すように、保護回路４８と
蓋４３との間に過熱保護素子４５を収納するようにして
いる。Reference numeral 48 indicates an overcharge of the secondary battery having the above-mentioned structure.
This protection circuit 48 protects against over-discharging.
Is an electrode terminal 4 that constitutes the other pole of the power generation element 42.
4 and the other metal terminal 46b of the pair of flat plate-shaped metal terminals 46a and 46b in the overheat protection element 45, and the electrode terminal 44 includes an input terminal 49 made of a flat plate metal. And the other metal terminal 46b of the overheat protection element 45 is connected via an input terminal 50 made of a plate-shaped metal. In this case, the connection between the electrode terminal 44 and the input terminal 49 and the connection between the lid 43 and the other metal terminal 46b and the input terminal 50 are all performed by spot welding. Further, the protection circuit 48 is configured such that the overheat protection element 45 is housed between the protection circuit 48 and the lid 43 by bending the input terminals 49 and 50, respectively, as shown in FIG.
【００５７】上記した本発明の実施の形態１０において
は、過熱保護素子４５における一対の金属端子４６ａ，
４６ｂのうち、他方の金属端子４６ｂの片面に絶縁層４
７を設け、この絶縁層４７を金属製の蓋４３に当接させ
るようにしているため、従来のように絶縁シートを別個
に設置することなく、過熱保護素子４５を金属製の蓋４
３に対して絶縁した状態で二次電池に容易に取り付ける
ことができるものである。In the tenth embodiment of the present invention described above, the pair of metal terminals 46a in the overheat protection element 45,
The insulating layer 4 is formed on one surface of the other metal terminal 46b of the 46b.
7 is provided so that the insulating layer 47 is brought into contact with the metallic lid 43, the overheat protection element 45 is attached to the metallic lid 4 without separately installing an insulating sheet as in the conventional case.
It can be easily attached to the secondary battery in a state of being insulated from 3.
【００５８】なお、上記本発明の実施の形態１０におい
ては、過熱保護素子４５を電池缶４１に取り付ける場
合、過熱保護素子４５における一方の金属端子４６ａを
蓋４３に電気的に接続し、かつ他方の金属端子４６ｂは
絶縁層４７を蓋４３に当接させるようにしているが、こ
れ以外の例として、過熱保護素子４５における一方の金
属端子４６ａを蓋４３以外の電池缶４１あるいは発電要
素４２の他方の極を構成する電極端子４４に電気的に接
続した場合でも、上記本発明の実施の形態１０と同様の
効果を有するものである。In the tenth embodiment of the present invention, when the overheat protection element 45 is attached to the battery can 41, one metal terminal 46a of the overheat protection element 45 is electrically connected to the lid 43, and the other The metal layer 46b of the above is configured such that the insulating layer 47 is brought into contact with the lid 43. Even when electrically connected to the electrode terminal 44 forming the other pole, the same effect as the tenth embodiment of the present invention is obtained.
【００５９】また、上記本発明の実施の形態１０におい
ては、二次電池を過充電・過放電等から保護する保護回
路４８を、発電要素４２の他方の極を構成する電極端子
４４と、過熱保護素子４５における一対の金属端子４６
ａ，４６ｂのうちの他方の金属端子４６ｂとの間に設け
るとともに、過熱保護素子４５を二次電池における電池
缶４１の蓋４３に取り付けているため、この二次電池は
過熱保護素子４５と保護回路４８の双方で保護されるこ
とになり、これにより、二次電池の安全性をさらに向上
させることができ、また、過熱保護素子４５における一
対の金属端子４６ａ，４６ｂのうち、他方の金属端子４
６ｂの片面に絶縁層４７を設け、この絶縁層４７を電池
缶４１の蓋４３に当接させるようにしているため、過熱
保護素子４５を二次電池の電池缶４１の蓋４３に取り付
ける場合、一対の金属端子４６ａ，４６ｂのうち、一方
の金属端子４６ａは二次電池における電池缶４１の蓋４
３に接続されるが、他方の金属端子４６ｂは絶縁層４７
を介して二次電池の電池缶４１の蓋４３と絶縁されるこ
とになり、これにより、従来のように絶縁シートを別個
に設置することなく、過熱保護素子４５を電池缶４１の
蓋４３に対して絶縁した状態で二次電池に容易に取り付
けることができるものである。Further, in the tenth embodiment of the present invention, the protection circuit 48 for protecting the secondary battery from overcharge / overdischarge is provided with the electrode terminal 44 constituting the other pole of the power generating element 42 and the overheat. A pair of metal terminals 46 in the protection element 45
The secondary battery is protected from the overheat protection element 45 because the overheat protection element 45 is attached to the lid 43 of the battery can 41 in the secondary battery while being provided between the other metal terminal 46b of a and 46b. Since it is protected by both of the circuits 48, the safety of the secondary battery can be further improved, and the other metal terminal of the pair of metal terminals 46 a and 46 b in the overheat protection element 45 can be further protected. Four
Since the insulating layer 47 is provided on one surface of 6b and the insulating layer 47 is brought into contact with the lid 43 of the battery can 41, when the overheat protection element 45 is attached to the lid 43 of the battery can 41 of the secondary battery, Of the pair of metal terminals 46a and 46b, one metal terminal 46a is the lid 4 of the battery can 41 in the secondary battery.
3, but the other metal terminal 46b is connected to the insulating layer 47.
It will be insulated from the lid 43 of the battery can 41 of the secondary battery via this, and thus the overheat protection element 45 can be attached to the lid 43 of the battery can 41 without separately installing an insulating sheet as in the conventional case. It can be easily attached to a secondary battery in an insulated state.
【００６０】そしてまた、上記本発明の実施の形態１０
においては、二次電池を過充電・過放電等から保護する
保護回路４８を、電池缶４１の上方開口部を閉塞する蓋
４３との間に過熱保護素子４５が収納されるように配設
し、かつこの保護回路４８を、前記過熱保護素子４５に
おける一対の金属端子４６ａ，４６ｂのうちの他方の金
属端子４６ｂと、発電要素４２の他方の極を構成する電
極端子４４とにそれぞれ電気的に接続しているため、過
熱保護素子４５と保護回路４８は双方とも電池缶４１の
一面上である蓋４３に配置されることになり、これによ
り、この二次電池を絶縁ケース等に封入してパック電池
を構成した場合においても、体積を小さくできて小型化
が図れるものである。Further, the tenth embodiment of the present invention described above.
In the above, the protection circuit 48 for protecting the secondary battery from overcharging / overdischarging is arranged so that the overheat protection element 45 is housed between it and the lid 43 that closes the upper opening of the battery can 41. Further, the protection circuit 48 is electrically connected to the other metal terminal 46b of the pair of metal terminals 46a and 46b in the overheat protection element 45 and the electrode terminal 44 constituting the other pole of the power generation element 42, respectively. Since they are connected, the overheat protection element 45 and the protection circuit 48 are both arranged on the lid 43 which is on one surface of the battery can 41, whereby this secondary battery is enclosed in an insulating case or the like. Even when a battery pack is constructed, the volume can be reduced and the size can be reduced.
【００６１】さらに、上記本発明の実施の形態１０にお
いては、保護回路４８と、発電要素４２の他方の極を構
成する電極端子４４および過熱保護素子４５における他
方の金属端子４６ｂとの接続部分である入力端子４９，
５０をそれぞれ折り曲げることにより、図１１に示すよ
うに、保護回路４８と電池缶４１の上方開口部を閉塞す
る蓋４３との間に過熱保護素子４５を収納するようにし
ているため、過熱保護素子４５と保護回路４８は双方と
も電池缶４１の一面上である蓋４３に配置されることに
なり、これにより、この二次電池を絶縁ケース等に封入
してパック電池を構成した場合においても、体積を小さ
くできて小型化が図れるものである。Further, in the tenth embodiment of the present invention, in the connection portion between the protection circuit 48 and the electrode terminal 44 constituting the other pole of the power generating element 42 and the other metal terminal 46b of the overheat protection element 45. A certain input terminal 49,
As shown in FIG. 11, the overheat protection element 45 is housed between the protection circuit 48 and the lid 43 that closes the upper opening of the battery can 41 by bending the respective 50. Both 45 and the protection circuit 48 are arranged on the lid 43, which is one surface of the battery can 41, so that even when the secondary battery is enclosed in an insulating case or the like to form a battery pack, The volume can be reduced and the size can be reduced.
【００６２】また、上記本発明の実施の形態１０におい
て二次電池に取り付けられる温度ヒューズからなる過熱
保護素子４５は、図１２に示すように、過熱保護素子本
体４５ａの両端部に平板状の一対の金属端子４６ａ，４
６ｂを有しているもので、この過熱保護素子４５の長さ
をＬ１、幅をＬ２、厚さをＬ３とした場合、Ｌ１＜２０
ｍｍ、好ましくはＬ１＜１５ｍｍ、Ｌ２＜４．０ｍｍ、
好ましくはＬ２＜３．５ｍｍ、Ｌ３＜１．５ｍｍ、好ま
しくはＬ３＜１．０ｍｍが電池缶上に配置する場合に最
適となるものである。すなわち、上記過熱保護素子４５
の長さＬ１、幅Ｌ２、厚さＬ３が上記の範囲以上である
と、過熱保護素子４５が大きくなり過ぎて電池缶上に配
置することが困難となり、また過熱保護素子４５を取り
付けた二次電池を絶縁ケース等に封入してパック電池を
構成した場合、その体積を小さくすることが困難となる
ものである。In the tenth embodiment of the present invention, as shown in FIG. 12, the overheat protection element 45, which is a thermal fuse attached to the secondary battery, has a pair of flat plates at both ends of the overheat protection element body 45a. Metal terminals 46a, 4 of
6b, and the length L1 of the overheat protection element 45 is L1, the width L2, and the thickness L3, L1 <20
mm, preferably L1 <15 mm, L2 <4.0 mm,
It is preferable that L2 <3.5 mm, L3 <1.5 mm, and preferably L3 <1.0 mm are optimally arranged on the battery can. That is, the overheat protection element 45
If the length L1, width L2, and thickness L3 of the above are over the above ranges, the overheat protection element 45 becomes too large to be arranged on the battery can, and the secondary heat protection element 45 is attached. When a battery pack is constructed by enclosing the battery in an insulating case or the like, it is difficult to reduce the volume.
【００６３】（実施の形態１１）図１３は本発明の実施
の形態１１における二次電池の一部を切欠した斜視図で
ある。(Embodiment 11) FIG. 13 is a perspective view in which a part of the secondary battery in Embodiment 11 of the present invention is cut away.
【００６４】本発明の実施の形態１１における二次電池
が、上記した本発明の実施の形態１０における二次電池
と異なる点は、本発明の実施の形態１０における二次電
池が、過熱保護素子４５における一対の金属端子４６
ａ，４６ｂのうち、他方の金属端子４６ｂの片面に絶縁
層４７を設けることにより、この絶縁層４７によって、
他方の金属端子４６ｂと金属製の蓋４３との絶縁を図っ
ているのに対し、本発明の実施の形態１１における二次
電池は、図１３に示すように、過熱保護素子４５におけ
る一対の金属端子４６ａ，４６ｂのうち、他方の金属端
子４６ｂを過熱保護素子４５の上方に位置するように折
り曲げることにより、他方の金属端子４６ｂと金属製の
蓋４３との接触をなくして、他方の金属端子４６ｂと金
属製の蓋４３との絶縁を図っている点である。The secondary battery according to the eleventh embodiment of the present invention is different from the secondary battery according to the tenth embodiment of the present invention in that the secondary battery according to the tenth embodiment of the present invention is an overheat protection device. A pair of metal terminals 46 at 45
By providing the insulating layer 47 on one surface of the other metal terminal 46b of a and 46b, the insulating layer 47 allows
While the other metal terminal 46b and the lid 43 made of metal are insulated from each other, the secondary battery according to the eleventh embodiment of the present invention has a pair of metals in the overheat protection element 45 as shown in FIG. By bending the other metal terminal 46b of the terminals 46a and 46b so as to be located above the overheat protection element 45, contact between the other metal terminal 46b and the metal lid 43 is eliminated, and the other metal terminal This is the point that the insulation between 46b and the lid 43 made of metal is intended.
【００６５】上記した本発明の実施の形態１１における
二次電池の構成によれば、過熱保護素子４５における一
対の金属端子４６ａ，４６ｂのうち、他方の金属端子４
６ｂを過熱保護素子４５の上方に位置するように折り曲
げているため、この他方の金属端子４６ｂが電池缶４１
における金属製の蓋４３に接触するということはなくな
り、これにより、他方の金属端子４６ｂと金属製の蓋４
３との絶縁を図ることができるため、従来のように絶縁
シートを別個に設置することなく、過熱保護素子４５を
電池缶４１の蓋４３に対して絶縁した状態で二次電池に
容易に取り付けることができるものである。According to the structure of the secondary battery in the eleventh embodiment of the present invention described above, the other metal terminal 4 of the pair of metal terminals 46a and 46b in the overheat protection element 45 is used.
Since 6b is bent so as to be located above the overheat protection element 45, the other metal terminal 46b is connected to the battery can 41.
, The metal lid 43 of the other side is not contacted, and thereby the other metal terminal 46b and the metal lid 4 are connected.
Since it can be insulated from 3, the overheat protection element 45 can be easily attached to the secondary battery in a state of being insulated from the lid 43 of the battery can 41 without separately installing an insulating sheet as in the conventional case. Is something that can be done.
【００６６】なお、上記本発明の実施の形態１〜９にお
いては、過熱保護素子の一例として温度ヒューズを挙
げ、そしてまた上記本発明の実施の形態１０，１１にお
いては、二次電池に取り付けられる過熱保護素子４５の
一例として温度ヒューズを挙げたが、この過熱保護素子
は温度ヒューズ以外のＰＴＣサーミスタや感熱式バイメ
タル等も適用できるものである。In the first to ninth embodiments of the present invention, a temperature fuse is used as an example of the overheat protection element, and in the tenth and eleventh embodiments of the present invention, it is attached to a secondary battery. Although a thermal fuse has been described as an example of the overheat protection element 45, a PTC thermistor, a heat sensitive bimetal, or the like other than the thermal fuse can be applied to this overheat protection element.
【００６７】[0067]
【発明の効果】以上のように本発明の過熱保護素子は、
一対の金属端子を取り付けた第１の絶縁フィルムと、こ
の第１の絶縁フィルムの上方に位置して前記一対の金属
端子の先端部間に接続された可溶合金と、この可溶合金
に塗布されたフラックスと、前記可溶合金の上方に位置
し、かつ前記第１の絶縁フィルムに封止により取り付け
られる第２の絶縁フィルムとを備え、前記一対の金属端
子のうち、いずれか一方の金属端子の片面に絶縁層を設
けたもので、この構成によれば、一対の金属端子のう
ち、いずれか一方の金属端子の片面に絶縁層を設けてい
るため、この過熱保護素子を二次電池の電池缶に取り付
ける場合、一対の金属端子のうち、一方の金属端子を二
次電池の電池缶あるいは電極端子に接続し、かつ絶縁層
を設けた他方の金属端子は絶縁層を二次電池の電池缶に
接触させることにより、他方の金属端子は絶縁層を介し
て二次電池の電池缶と絶縁されることになり、これによ
り、従来のように絶縁シートを別個に設置するという必
要はなくなり、また過熱保護素子の一対の金属端子間も
短絡させることなく、過熱保護素子を二次電池の電池缶
に容易に取り付けることができるという効果を有するも
のである。As described above, the overheat protection element of the present invention is
A first insulating film having a pair of metal terminals attached thereto, a fusible alloy located above the first insulating film and connected between the tip portions of the pair of metal terminals, and applied to the fusible alloy And a second insulating film which is located above the fusible alloy and which is attached to the first insulating film by sealing. The metal of any one of the pair of metal terminals. According to this configuration, the insulating layer is provided on one surface of the terminal. According to this configuration, the insulating layer is provided on one surface of one of the metal terminals of the pair of metal terminals. When a battery can is attached to a battery can, the one metal terminal of the pair of metal terminals is connected to the battery can or the electrode terminal of the secondary battery, and the other metal terminal provided with an insulating layer has the insulating layer of the secondary battery. By touching the battery can , The other metal terminal is insulated from the battery can of the secondary battery through the insulating layer, which eliminates the need to separately install an insulating sheet as in the conventional case, and also prevents the pair of overheat protection elements from being installed. It has an effect that the overheat protection element can be easily attached to the battery can of the secondary battery without short-circuiting between the metal terminals.
【図１】（ａ）本発明の実施の形態１における温度ヒュ
ーズの一部切欠上面図
（ｂ）図１（ａ）におけるＡ−Ａ線断面図1A is a partially cutaway top view of a thermal fuse according to Embodiment 1 of the present invention, FIG. 1B is a sectional view taken along the line AA in FIG. 1A.
【図２】本発明の実施の形態２における温度ヒューズの
断面図FIG. 2 is a sectional view of a thermal fuse according to a second embodiment of the present invention.
【図３】本発明の実施の形態３における温度ヒューズの
断面図FIG. 3 is a sectional view of a thermal fuse according to a third embodiment of the present invention.
【図４】本発明の実施の形態４における温度ヒューズの
断面図FIG. 4 is a sectional view of a thermal fuse according to a fourth embodiment of the present invention.
【図５】本発明の実施の形態５における温度ヒューズの
断面図FIG. 5 is a sectional view of a thermal fuse according to a fifth embodiment of the present invention.
【図６】（ａ）本発明の実施の形態６における温度ヒュ
ーズの一部切欠上面図
（ｂ）図６（ａ）におけるＡ−Ａ線断面図6A is a partially cutaway top view of a thermal fuse according to a sixth embodiment of the present invention, FIG. 6B is a sectional view taken along the line AA in FIG. 6A.
【図７】本発明の実施の形態７における温度ヒューズの
断面図FIG. 7 is a sectional view of a thermal fuse according to a seventh embodiment of the present invention.
【図８】本発明の実施の形態８における温度ヒューズの
断面図FIG. 8 is a sectional view of a thermal fuse according to an eighth embodiment of the present invention.
【図９】本発明の実施の形態９における温度ヒューズの
断面図FIG. 9 is a sectional view of a thermal fuse according to a ninth embodiment of the present invention.
【図１０】本発明の実施の形態１０における二次電池の
一部を切欠した斜視図FIG. 10 is a perspective view in which a part of the secondary battery according to the tenth embodiment of the present invention is cut away.
【図１１】同一部を切欠した斜視図FIG. 11 is a perspective view in which the same portion is cut away.
【図１２】同二次電池に取り付けられる過熱保護素子の
斜視図FIG. 12 is a perspective view of an overheat protection element attached to the secondary battery.
【図１３】本発明の実施の形態１１における二次電池の
一部を切欠した斜視図FIG. 13 is a perspective view in which a part of the secondary battery according to Embodiment 11 of the present invention is cut away.
【図１４】従来の過熱保護素子の断面図FIG. 14 is a sectional view of a conventional overheat protection element.
【図１５】従来の過熱保護素子を使用した二次電池の一
部切欠斜視図FIG. 15 is a partially cutaway perspective view of a secondary battery using a conventional overheat protection element.
２１ 第１の絶縁フィルム ２２ 一対の金属端子 ２３ 可溶合金 ２４ フラックス ２５ 第２の絶縁フィルム ２６，２６ａ，２６ｂ 絶縁層 ３１ 第１の絶縁フィルム ３２ 一対の金属端子 ３３ 可溶合金 ３４ フラックス ３５ 第２の絶縁フィルム ３６，３６ａ，３６ｂ 絶縁層 ４１ 電池缶 ４２ 発電要素 ４３ 蓋 ４４ 電極端子 ４５ 過熱保護素子 ４６ａ 一方の金属端子 ４６ｂ 他方の金属端子 ４７ 絶縁層 ４８ 保護回路 ４９，５０ 入力端子 21 First insulating film 22 A pair of metal terminals 23 Soluble alloy 24 Flux 25 Second insulating film 26, 26a, 26b Insulating layer 31 First insulating film 32 pair of metal terminals 33 soluble alloy 34 Flux 35 Second insulating film 36, 36a, 36b Insulating layer 41 battery cans 42 Power generation element 43 lid 44 electrode terminals 45 Overheat protection element 46a One metal terminal 46b Other metal terminal 47 insulating layer 48 Protection circuit 49,50 input terminals
フロントページの続き Ｆターム(参考） 5G502 AA02 BA04 FF08 5H022 CC02 CC09 CC12 KK01 5H040 AA40 DD02 Continued front page F-term (reference) 5G502 AA02 BA04 FF08 5H022 CC02 CC09 CC12 KK01 5H040 AA40 DD02
Claims (21)
フィルムと、この第１の絶縁フィルムの上方に位置して
前記一対の金属端子の先端部間に接続された可溶合金
と、この可溶合金に塗布されたフラックスと、前記可溶
合金の上方に位置し、かつ前記第１の絶縁フィルムに封
止により取り付けられる第２の絶縁フィルムとを備え、
前記一対の金属端子のうち、いずれか一方の金属端子の
片面に絶縁層を設けた過熱保護素子。1. A first insulating film having a pair of metal terminals attached thereto, and a fusible alloy located above the first insulating film and connected between the tip portions of the pair of metal terminals. A flux applied to the fusible alloy; and a second insulating film located above the fusible alloy and attached to the first insulating film by sealing.
An overheat protection element in which an insulating layer is provided on one surface of one of the pair of metal terminals.
１記載の過熱保護素子。2. The overheat protection element according to claim 1, wherein the insulating layer is made of a thermoplastic resin.
成した請求項１記載の過熱保護素子。3. The overheat protection element according to claim 1, wherein the insulating layer is formed integrally with the first insulating film.
成した請求項１記載の過熱保護素子。4. The overheat protection element according to claim 1, wherein the insulating layer is formed integrally with the second insulating film.
ら上面に表出するように前記一対の金属端子を取り付け
た第１の絶縁フィルムと、この第１の絶縁フィルムの上
方に位置して前記一対の金属端子の先端部間に接続され
た可溶合金と、この可溶合金に塗布されたフラックス
と、前記可溶合金の上方に位置し、かつ前記第１の絶縁
フィルムに封止により取り付けられる第２の絶縁フィル
ムとを備え、前記一対の金属端子のうち、いずれか一方
の金属端子の片面に絶縁層を設けた過熱保護素子。5. A first insulating film on which the pair of metal terminals are attached so that a part of each end of the pair of metal terminals is exposed from the lower surface to the upper surface, and above the first insulating film. A fusible alloy positioned between the tip portions of the pair of metal terminals, a flux applied to the fusible alloy, and positioned above the fusible alloy, and on the first insulating film. A second insulating film attached by sealing, and an overheat protection element in which an insulating layer is provided on one surface of one of the pair of metal terminals.
５記載の過熱保護素子。6. The overheat protection element according to claim 5, wherein the insulating layer is made of a thermoplastic resin.
成した請求項５記載の過熱保護素子。7. The overheat protection element according to claim 5, wherein the insulating layer is formed integrally with the first insulating film.
成した請求項５記載の過熱保護素子。8. The overheat protection element according to claim 5, wherein the insulating layer is formed integrally with the second insulating film.
フィルムと、この第１の絶縁フィルムの上方に位置して
前記一対の金属端子の先端部間に接続された可溶合金
と、この可溶合金に塗布されたフラックスと、前記可溶
合金の上方に位置し、かつ前記第１の絶縁フィルムに封
止により取り付けられる第２の絶縁フィルムとを備え、
前記一対の金属端子のうち、いずれか一方の金属端子を
前記第２の絶縁フィルムの上方に位置するように折り曲
げた過熱保護素子。9. A first insulating film having a pair of metal terminals attached thereto, a fusible alloy located above the first insulating film and connected between the tip portions of the pair of metal terminals, A flux applied to the fusible alloy; and a second insulating film located above the fusible alloy and attached to the first insulating film by sealing.
An overheat protection element obtained by bending one of the metal terminals of the pair of metal terminals so as to be located above the second insulating film.
縁フィルムと、この第１の絶縁フィルムの上方に位置し
て前記一対の金属端子の先端部間に接続された可溶合金
と、この可溶合金に塗布されたフラックスと、前記可溶
合金の上方に位置し、かつ前記第１の絶縁フィルムに封
止により取り付けられる第２の絶縁フィルムとを備え、
前記一対の金属端子のうち、いずれか一方の金属端子を
第１の絶縁フィルムの下方に位置するように折り曲げた
過熱保護素子。10. A first insulating film having a pair of metal terminals attached thereto, a fusible alloy located above the first insulating film and connected between tip portions of the pair of metal terminals, A flux applied to the fusible alloy; and a second insulating film located above the fusible alloy and attached to the first insulating film by sealing.
An overheat protection element in which one of the pair of metal terminals is bent so as to be located below the first insulating film.
から上面に表出するように前記一対の金属端子を取り付
けた第１の絶縁フィルムと、この第１の絶縁フィルムの
上方に位置して前記一対の金属端子の先端部間に接続さ
れた可溶合金と、この可溶合金に塗布されたフラックス
と、前記可溶合金の上方に位置し、かつ前記第１の絶縁
フィルムに封止により取り付けられる第２の絶縁フィル
ムとを備え、前記一対の金属端子のうち、いずれか一方
の金属端子を第１の絶縁フィルムの下方に位置するよう
に折り曲げた過熱保護素子。11. A first insulating film on which the pair of metal terminals are attached so that a part of each end of the pair of metal terminals is exposed from the lower surface to the upper surface, and above the first insulating film. A fusible alloy positioned between the tip portions of the pair of metal terminals, a flux applied to the fusible alloy, and positioned above the fusible alloy, and on the first insulating film. A second insulating film attached by sealing, wherein one of the pair of metal terminals is bent so as to be located below the first insulating film.
つ一方の極を電池缶とした発電要素と、この発電要素の
他方の極を構成する電極端子と、一対の金属素子のう
ち、一方の金属端子を前記電池缶あるいは前記電極端子
に電気的に接続した過熱保護素子とを備え、前記過熱保
護素子における一対の金属端子のうち、他方の金属端子
の片面に絶縁層を設け、この絶縁層を前記電池缶に当接
させるようにした二次電池。12. A battery can, a power generating element built in the battery can and having one pole as a battery can, an electrode terminal constituting the other pole of the power generating element, and a pair of metal elements, An overheat protection element in which one metal terminal is electrically connected to the battery can or the electrode terminal is provided, and an insulating layer is provided on one surface of the other metal terminal of the pair of metal terminals in the overheat protection element. A secondary battery in which an insulating layer is brought into contact with the battery can.
つ一方の極を電池缶とした発電要素と、この発電要素の
他方の極を構成する電極端子と、一対の金属端子のう
ち、一方の金属端子を前記電池缶に電気的に接続した過
熱保護素子と、この過熱保護素子における一対の金属端
子のうち、他方の金属端子と前記電極端子との間に設け
られ、かつ二次電池を過充電・過放電等から保護する保
護回路とを備え、前記過熱保護素子における一対の金属
端子のうち、他方の金属端子の片面に絶縁層を設け、こ
の絶縁層を前記電池缶に当接させるようにした二次電
池。13. A battery can, a power generating element built in the battery can and having one pole as a battery can, an electrode terminal constituting the other pole of the power generating element, and a pair of metal terminals. An overheat protection element in which one metal terminal is electrically connected to the battery can, and a pair of metal terminals in the overheat protection element are provided between the other metal terminal and the electrode terminal, and a secondary battery And a protective circuit for protecting the overheat / overdischarge from the pair of metal terminals in the overheat protection element, and an insulating layer is provided on one surface of the other metal terminal, and the insulating layer contacts the battery can. Rechargeable battery made to let.
する保護回路を、電池缶との間に過熱保護素子が収納さ
れるように配設し、かつこの保護回路を、前記過熱保護
素子における一対の金属端子のうち、他方の金属端子
と、電極端子とにそれぞれ電気的に接続した請求項１３
記載の二次電池。14. A protection circuit for protecting the secondary battery from overcharging / overdischarging is arranged so that an overheat protection element is housed between the battery can and the protection circuit, and the protection circuit is provided with the overheat protection. 14. The element is electrically connected to the other metal terminal of the pair of metal terminals in the element and the electrode terminal, respectively.
The secondary battery described.
する保護回路と、発電要素の他方の極を構成する電極端
子および過熱保護素子における他方の金属端子との接続
部分を、それぞれ折り曲げることにより、保護回路と電
池缶との間に過熱保護素子を収納するようにした請求項
１３記載の二次電池。15. A protection circuit for protecting the secondary battery from overcharging / overdischarging and the like, and a connection portion between an electrode terminal forming the other pole of the power generation element and the other metal terminal of the overheat protection element are respectively bent. The secondary battery according to claim 13, wherein the overheat protection element is housed between the protection circuit and the battery can.
た請求項１２〜１５のいずれかに記載の二次電池。16. The secondary battery according to claim 12, wherein the overheat protection element is a thermal fuse.
つ一方の極を電池缶とした発電要素と、この発電要素の
他方の極を構成する電極端子と、一対の金属端子のう
ち、一方の金属端子が前記電池缶に電気的に接続され、
かつ他方の金属端子が過熱保護素子の上方に位置するよ
うに折り曲げられた過熱保護素子とを備えた二次電池。17. A battery can, a power-generating element that is built in the battery can and has one pole as a battery can, an electrode terminal that constitutes the other pole of the power-generating element, and a pair of metal terminals. One metal terminal is electrically connected to the battery can,
A secondary battery comprising: an overheat protection element that is bent so that the other metal terminal is located above the overheat protection element.
つ一方の極を電池缶とした発電要素と、この発電要素の
他方の極を構成する電極端子と、一対の金属端子のう
ち、一方の金属端子が前記電池缶に電気的に接続され、
かつ他方の金属端子が過熱保護素子の上方に位置するよ
うに折り曲げられた過熱保護素子と、前記他方の金属端
子と電極端子との間に設けられ、かつ二次電池を過充電
・過放電等から保護する保護回路とを備えた二次電池。18. A battery can, a power generating element built in the battery can and having one pole as a battery can, an electrode terminal constituting the other pole of the power generating element, and a pair of metal terminals. One metal terminal is electrically connected to the battery can,
And the other metal terminal is provided between the overheat protection element bent so that it is located above the overheat protection element, and the other metal terminal and the electrode terminal, and the secondary battery is overcharged or overdischarged. Secondary battery equipped with a protection circuit to protect from.
する保護回路を、電池缶との間に過熱保護素子が収納さ
れるように配設し、かつこの保護回路を、前記過熱保護
素子における一対の金属端子のうち、他方の金属端子
と、電極端子とにそれぞれ電気的に接続した請求項１７
記載の二次電池。19. A protection circuit for protecting a secondary battery from overcharge, overdischarge, etc. is arranged so that an overheat protection element is housed between the battery can and the protection circuit, and the protection circuit is provided with the overheat protection. The pair of metal terminals of the element are electrically connected to the other metal terminal and the electrode terminal, respectively.
The secondary battery described.
する保護回路と、発電要素の他方の極を構成する電極端
子および過熱保護素子における他方の金属端子との接続
部分を、それぞれ折り曲げることにより、保護回路と電
池缶との間に過熱保護素子を収納するようにした請求項
１７記載の二次電池。20. A connection portion between a protection circuit that protects the secondary battery from overcharging / overdischarging and the like, and an electrode terminal that constitutes the other pole of the power generation element and the other metal terminal of the overheat protection element are respectively bent. 18. The secondary battery according to claim 17, wherein the overheat protection element is housed between the protection circuit and the battery can.
た請求項１７〜２０のいずれかに記載の二次電池。21. The secondary battery according to claim 17, wherein the overheat protection element is a thermal fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002266738A JP4265182B2 (en) | 2001-09-12 | 2002-09-12 | Overheat protection element and secondary battery |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001276292 | 2001-09-12 | ||
| JP2001-276292 | 2001-09-12 | ||
| JP2002266738A JP4265182B2 (en) | 2001-09-12 | 2002-09-12 | Overheat protection element and secondary battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003178660A true JP2003178660A (en) | 2003-06-27 |
| JP4265182B2 JP4265182B2 (en) | 2009-05-20 |
Family
ID=26622063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002266738A Expired - Fee Related JP4265182B2 (en) | 2001-09-12 | 2002-09-12 | Overheat protection element and secondary battery |
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| Country | Link |
|---|---|
| JP (1) | JP4265182B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008177084A (en) * | 2007-01-19 | 2008-07-31 | Sumitomo Electric Ind Ltd | Lead terminal for power storage device with fuse, and nonaqueous electrolyte power storage device |
| JP2009048884A (en) * | 2007-08-21 | 2009-03-05 | Panasonic Corp | Temperature fuse |
| JP2009054337A (en) * | 2007-08-24 | 2009-03-12 | Panasonic Corp | Thermal fuse |
| JP2009054336A (en) * | 2007-08-24 | 2009-03-12 | Panasonic Corp | Thermal fuse |
| CN109301113A (en) * | 2018-09-30 | 2019-02-01 | 吉林大学 | A kind of power battery of pure electric automobile chance fire automatic safety device |
-
2002
- 2002-09-12 JP JP2002266738A patent/JP4265182B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008177084A (en) * | 2007-01-19 | 2008-07-31 | Sumitomo Electric Ind Ltd | Lead terminal for power storage device with fuse, and nonaqueous electrolyte power storage device |
| JP4609432B2 (en) * | 2007-01-19 | 2011-01-12 | 住友電気工業株式会社 | Lead terminal for power storage device with fuse and non-aqueous electrolyte power storage device |
| JP2009048884A (en) * | 2007-08-21 | 2009-03-05 | Panasonic Corp | Temperature fuse |
| JP2009054337A (en) * | 2007-08-24 | 2009-03-12 | Panasonic Corp | Thermal fuse |
| JP2009054336A (en) * | 2007-08-24 | 2009-03-12 | Panasonic Corp | Thermal fuse |
| CN109301113A (en) * | 2018-09-30 | 2019-02-01 | 吉林大学 | A kind of power battery of pure electric automobile chance fire automatic safety device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4265182B2 (en) | 2009-05-20 |
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