JPH0458455A - Lithium battery - Google Patents
Lithium batteryInfo
- Publication number
- JPH0458455A JPH0458455A JP2167952A JP16795290A JPH0458455A JP H0458455 A JPH0458455 A JP H0458455A JP 2167952 A JP2167952 A JP 2167952A JP 16795290 A JP16795290 A JP 16795290A JP H0458455 A JPH0458455 A JP H0458455A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- current collector
- positive electrode
- conducting
- conducting layer
- 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.)
- Pending
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims description 14
- 229910052744 lithium Inorganic materials 0.000 title claims description 14
- 239000011159 matrix material Substances 0.000 claims abstract description 5
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 5
- 239000000057 synthetic resin Substances 0.000 claims abstract description 5
- 239000013543 active substance Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 239000003973 paint Substances 0.000 abstract description 2
- 238000010304 firing Methods 0.000 abstract 2
- 239000011149 active material Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000004880 explosion Methods 0.000 description 4
- 239000011888 foil Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene 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
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は負極にリチウム、リチウム合金又はカーボンや
ＷＯ７の如きリチウム吸蔵電極、電解液に非水電解液を
用いたリチウム電池に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a lithium battery using a lithium storage electrode such as lithium, lithium alloy, carbon or WO7 as a negative electrode, and a non-aqueous electrolyte as an electrolyte.
従来技術とその問題点
従来のリチウム電池では、正極及び負極共、作用物質が
直接、ステンレス等の金属製集電体の面上に配された構
成であった。Prior art and its problems In conventional lithium batteries, active substances in both the positive and negative electrodes are directly disposed on the surface of a metal current collector made of stainless steel or the like.
この欅な構成の電池において、誤って短絡を生した場合
、電池内部で発熱し電池温度が急上昇する。If a short circuit occurs in a battery with this key structure, heat will be generated inside the battery and the battery temperature will rise rapidly.
従来電池では短絡電流を抑制する機構を有しないので、
電池温度が危険領域を越えて上昇し、ついには発火、破
裂に至る恐れがあり問題であった。Conventional batteries do not have a mechanism to suppress short circuit current, so
This was a problem because the battery temperature rose beyond the dangerous range, which could eventually lead to fire and explosion.
発明の目的
本発明は上記従来の問題点に鑑みなされたものであり、
電池温度の過度の上昇において電池の発火、破裂の危険
性を防いだリチウム電池を提供することを目的とするも
のである。Purpose of the Invention The present invention has been made in view of the above-mentioned conventional problems.
The object of the present invention is to provide a lithium battery that prevents the risk of fire or explosion of the battery due to excessive rise in battery temperature.
発明の構成
本発明は上記目的を達成するべく、
正・負極の少くとも一方の集電体と作用物質間に、温度
上昇により電気抵抗が増大する導電性粒子と合成樹脂マ
トリックスからなるｓｉｉ性層を設けたことを特徴とす
るリチウム電池である。Structure of the Invention In order to achieve the above-mentioned object, the present invention provides, between at least one of the positive and negative electrodes, a current collector and an active substance, a sii layer consisting of conductive particles and a synthetic resin matrix whose electrical resistance increases as the temperature rises. This is a lithium battery characterized by the following.
実施例 以下、本発明の詳細について一実施例により説明する。Example Hereinafter, the details of the present invention will be explained using one example.
第１図は本発明の一実施例を示す扁平形リチウム電池の
断面図、第２図は本発明の電池と従来品の電池のショー
ト開始から経過時間と電池表面温度の関係を示した図で
ある。Fig. 1 is a cross-sectional view of a flat lithium battery showing an embodiment of the present invention, and Fig. 2 is a diagram showing the relationship between the time elapsed from the start of a short circuit and the battery surface temperature between the battery of the present invention and a conventional battery. be.
ここで１は正極集電体兼電槽、２は導電性層、３は正極
、４はセパレータ、５は負極、６は負極集電体兼電槽、
７はシールである。Here, 1 is a positive electrode current collector and battery case, 2 is a conductive layer, 3 is a positive electrode, 4 is a separator, 5 is a negative electrode, 6 is a negative electrode current collector and a battery case,
7 is a seal.
正極集電体兼電槽はステンレス製の金属箔からなり、正
極集電体の内面に導電性層が塗布されている。The positive electrode current collector and battery case is made of stainless steel metal foil, and a conductive layer is coated on the inner surface of the positive electrode current collector.
正極はＭｎＯっやＴｉ５ｔ等の正極作用物質とアセチレ
ンブランク等の導電性剤を混合し、更にバインダーを混
練してシート状にしたものを導電性層に載置する。The positive electrode is prepared by mixing a positive electrode active substance such as MnO or Ti5T with a conductive agent such as an acetylene blank, and then kneading a binder to form a sheet, which is then placed on the conductive layer.
あるいは、溶剤を加えてペースト状として、導電性層の
内面状に塗布し、溶剤を揮発させて固化したものを用い
る。Alternatively, a paste may be applied to the inner surface of the conductive layer by adding a solvent, and the paste may be solidified by volatilizing the solvent.
セパレータは１ｍｏｌｅ／Ｆ！のＬｉＣｌ０ａ／ＰＣ（
プロピレンカーボネート）溶液を含浸させたポリプロピ
レンやポリエチレンの微孔膜又は不織布から成る。負極
はリチウム箔からなる負極作用物質でステンレスの金属
箔からなる負極集電体兼電槽の内面に圧着されている。The separator is 1 mole/F! of LiCl0a/PC (
It consists of a microporous polypropylene or polyethylene membrane or nonwoven fabric impregnated with a propylene carbonate (propylene carbonate) solution. The negative electrode is a negative electrode active material made of lithium foil, which is crimped onto the inner surface of a negative electrode current collector and battery case made of stainless steel metal foil.
シール剖は変性ポリオレフィンフィルムからなる窓枠状
のシールで正極集電体と負極集電体の内面に接着されて
いる。The seal is a window frame-shaped seal made of modified polyolefin film that is adhered to the inner surfaces of the positive electrode current collector and negative electrode current collector.
導電性層は、炭素微粒子を合成樹脂マトリックスと混合
したもので、例えば大阪ガス■製の自己温度制御型ブレ
ーンヒーターに用いられている導電性塗料を正極集電体
の内面に厚さ５〜１００、ｃｒｍ塗布したものである。The conductive layer is made by mixing carbon fine particles with a synthetic resin matrix. For example, the conductive paint used in self-temperature control type brain heaters manufactured by Osaka Gas ■ is coated on the inner surface of the positive electrode current collector to a thickness of 5 to 100 mm. , crm coated.
本発明の電池（ＭｎＯ□／ Ｌ ｉ系のリチウム電池）
と導電性層の無い従来の電池（ＭｎＯｚ／Ｌｉ系のリチ
ウム電池）を用いて、短絡（ショート）させた時のショ
ート開始からの経過時間と各々の電池表面温度の上昇を
測定し、第２図に示した。Battery of the present invention (MnO□/Li-based lithium battery)
Using a conventional battery without a conductive layer (MnOz/Li-based lithium battery), we measured the elapsed time from the start of the short circuit and the rise in the surface temperature of each battery. Shown in the figure.
本発明の電池では、導電性層が電池温度の上昇に供って
抵抗体として働き、短絡を流を抑制する為に電池の発熱
が抑えられる。このために、電池温度上昇が抑えられ、
発火、破裂に至る危険性が無い、これに対して、従来品
の電池では短絡による発熱で電池温度が上昇し、発火、
破裂が発生する危険性がある。In the battery of the present invention, the conductive layer acts as a resistor as the battery temperature rises and suppresses short circuits, thereby suppressing heat generation in the battery. This suppresses the rise in battery temperature,
There is no risk of ignition or explosion.In contrast, with conventional batteries, the battery temperature rises due to heat generation due to short circuits, causing ignition and rupture.
There is a risk of rupture.
発明の効果
上述した如く、本発明は電池温度の過度の上昇において
電池の発火、破裂の危険性を防いだリチウム電池を提供
することが出来るので、その工業的価値は極めて大であ
る。Effects of the Invention As described above, the present invention can provide a lithium battery that prevents the risk of battery fire or explosion due to excessive rise in battery temperature, and therefore has extremely great industrial value.
第１図は本発明の一実施例を示す扁平形リチウム電池の
断面図、第２図はショート開始から経過時間と電池表面
温度の関係を示した図である。
１・・・正極集電体兼電槽 ２・・・導電性層３・
・・正極 ４・・・セパレータ５・・
・負極 ６・・・負極集電体兼電槽７・・・シ
ール
第１図
第２図FIG. 1 is a sectional view of a flat lithium battery showing an embodiment of the present invention, and FIG. 2 is a diagram showing the relationship between the elapsed time from the start of a short circuit and the battery surface temperature. 1... Positive electrode current collector and battery case 2... Conductive layer 3.
...Positive electrode 4...Separator 5...
・Negative electrode 6...Negative electrode current collector and battery case 7...Seal Figure 1 Figure 2
Claims (1)
度上昇により電気抵抗が増大する導電性粒子と合成樹脂
マトリックスからなる導電性層を設けたことを特徴とす
るリチウム電池。A lithium battery characterized in that a conductive layer consisting of conductive particles and a synthetic resin matrix whose electrical resistance increases as the temperature rises is provided between at least one of the current collectors of the positive and negative electrodes and the active substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2167952A JPH0458455A (en) | 1990-06-25 | 1990-06-25 | Lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2167952A JPH0458455A (en) | 1990-06-25 | 1990-06-25 | Lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0458455A true JPH0458455A (en) | 1992-02-25 |
Family
ID=15859091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2167952A Pending JPH0458455A (en) | 1990-06-25 | 1990-06-25 | Lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0458455A (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999040640A1 (en) * | 1998-02-06 | 1999-08-12 | Mitsubishi Denki Kabushiki Kaisha | Electrode, method of producing electrode, and cell comprising the electrode |
| WO1999067836A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Cell and method of producing the same |
| WO1999067840A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Cell and method of producing the same |
| WO1999067841A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Cell and method of producing the same |
| WO1999067842A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Cell and method of producing the same |
| WO1999067834A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Electrode, method of producing electrode, and cell comprising the electrode |
| WO1999067839A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Cell and method of producing the same |
| WO1999067835A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Electrode, method of producing electrode, and cell comprising the electrode |
| WO1999067837A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Electrode, method of producing electrode, and cell comprising the electrode |
| WO1999067838A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Cell and method of producing the same |
| WO1999067833A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Cell and method of producing the same |
| WO2004011901A2 (en) * | 2002-07-26 | 2004-02-05 | A123 Systems, Inc. | Electrodes and related devices |
| JPWO2002054524A1 (en) * | 2000-12-28 | 2004-05-13 | 松下電器産業株式会社 | Non-aqueous electrolyte secondary battery |
| JP2007180041A (en) * | 2007-02-02 | 2007-07-12 | Nitto Denko Corp | Battery |
| US7662265B2 (en) | 2000-10-20 | 2010-02-16 | Massachusetts Institute Of Technology | Electrophoretic assembly of electrochemical devices |
| US10164242B2 (en) | 2011-04-07 | 2018-12-25 | Massachusetts Institute Of Technology | Controlled porosity in electrodes |
| US10569480B2 (en) | 2014-10-03 | 2020-02-25 | Massachusetts Institute Of Technology | Pore orientation using magnetic fields |
| US10675819B2 (en) | 2014-10-03 | 2020-06-09 | Massachusetts Institute Of Technology | Magnetic field alignment of emulsions to produce porous articles |
-
1990
- 1990-06-25 JP JP2167952A patent/JPH0458455A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6399252B1 (en) | 1998-02-06 | 2002-06-04 | Mitsubishi Denki Kabushiki Kaisha | Electrode, method of producing electrode, and cell comprising the electrode |
| JP3786973B2 (en) * | 1998-02-06 | 2006-06-21 | 三菱電機株式会社 | Electrode, method for producing the electrode, and battery using the electrode |
| US6773633B2 (en) | 1998-02-06 | 2004-08-10 | Mitsubishi Denki Kabushiki Kaisha | Process for producing an electrode with positive temperature coefficient (PTC) function |
| WO1999040640A1 (en) * | 1998-02-06 | 1999-08-12 | Mitsubishi Denki Kabushiki Kaisha | Electrode, method of producing electrode, and cell comprising the electrode |
| US6623883B1 (en) | 1998-06-25 | 2003-09-23 | Mitsubishi Denki Kabushiki Kaisha | Electrode having PTC function and battery comprising the electrode |
| US6579641B2 (en) | 1998-06-25 | 2003-06-17 | Mitsubishi Denki Kabushiki Kaisha | Battery and process for preparing the same |
| WO1999067839A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Cell and method of producing the same |
| WO1999067835A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Electrode, method of producing electrode, and cell comprising the electrode |
| WO1999067837A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Electrode, method of producing electrode, and cell comprising the electrode |
| WO1999067838A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Cell and method of producing the same |
| WO1999067833A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Cell and method of producing the same |
| EP1035606A1 (en) * | 1998-06-25 | 2000-09-13 | Mitsubishi Denki Kabushiki Kaisha | Cell and method of producing the same |
| EP1100135A1 (en) * | 1998-06-25 | 2001-05-16 | Mitsubishi Denki Kabushiki Kaisha | Cell and method of producing the same |
| WO1999067842A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Cell and method of producing the same |
| US6440608B1 (en) | 1998-06-25 | 2002-08-27 | Mitsubishi Denki Kabushiki Kaisha | Cell and method of producing the same |
| JP4011635B2 (en) * | 1998-06-25 | 2007-11-21 | 三菱電機株式会社 | Electrode manufacturing method |
| WO1999067841A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Cell and method of producing the same |
| US6670070B2 (en) | 1998-06-25 | 2003-12-30 | Mitsubishi Denki Kabushiki Kaisha | Battery and process for preparing the same |
| US6677074B2 (en) | 1998-06-25 | 2004-01-13 | Mitsubishi Denki Kabushiki Kaisha | Cell and method of producing the same |
| WO1999067834A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Electrode, method of producing electrode, and cell comprising the electrode |
| WO1999067836A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Cell and method of producing the same |
| EP1100135A4 (en) * | 1998-06-25 | 2006-06-14 | Mitsubishi Electric Corp | Cell and method of producing the same |
| WO1999067840A1 (en) * | 1998-06-25 | 1999-12-29 | Mitsubishi Denki Kabushiki Kaisha | Cell and method of producing the same |
| EP1035606A4 (en) * | 1998-06-25 | 2006-06-14 | Mitsubishi Electric Corp | Cell and method of producing the same |
| US7662265B2 (en) | 2000-10-20 | 2010-02-16 | Massachusetts Institute Of Technology | Electrophoretic assembly of electrochemical devices |
| JPWO2002054524A1 (en) * | 2000-12-28 | 2004-05-13 | 松下電器産業株式会社 | Non-aqueous electrolyte secondary battery |
| WO2004011901A2 (en) * | 2002-07-26 | 2004-02-05 | A123 Systems, Inc. | Electrodes and related devices |
| US7087348B2 (en) | 2002-07-26 | 2006-08-08 | A123 Systems, Inc. | Coated electrode particles for composite electrodes and electrochemical cells |
| WO2004011901A3 (en) * | 2002-07-26 | 2004-06-24 | A123 Systems Inc | Electrodes and related devices |
| JP2007180041A (en) * | 2007-02-02 | 2007-07-12 | Nitto Denko Corp | Battery |
| US10164242B2 (en) | 2011-04-07 | 2018-12-25 | Massachusetts Institute Of Technology | Controlled porosity in electrodes |
| US10569480B2 (en) | 2014-10-03 | 2020-02-25 | Massachusetts Institute Of Technology | Pore orientation using magnetic fields |
| US10675819B2 (en) | 2014-10-03 | 2020-06-09 | Massachusetts Institute Of Technology | Magnetic field alignment of emulsions to produce porous articles |
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