JPH04294071A - Li battery - Google Patents
Li batteryInfo
- Publication number
- JPH04294071A JPH04294071A JP3083079A JP8307991A JPH04294071A JP H04294071 A JPH04294071 A JP H04294071A JP 3083079 A JP3083079 A JP 3083079A JP 8307991 A JP8307991 A JP 8307991A JP H04294071 A JPH04294071 A JP H04294071A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- lithium
- sheet
- substance
- pressure member
- 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
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 8
- 229910052744 lithium Inorganic materials 0.000 claims description 18
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 14
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 abstract description 2
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 229910021645 metal ion Inorganic materials 0.000 abstract 1
- 239000005518 polymer electrolyte Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012982 microporous membrane Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910012970 LiV3O8 Inorganic materials 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Primary Cells (AREA)
- Secondary Cells (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、リチウム電池の構造に
関すものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a lithium battery.
【０００２】0002
【従来の技術】近年、携帯用電子機器や電池使用機器は
、小型・薄形化の進展が著しく、電池も小型で容量が大
で長寿命であることが要求されている。特に、リチウム
に代表される軽金属を負極活物質とした電池は、本質的
にエネルギー密度が高いことから、鉛電池や、ニッケル
カドミウム電池に比べて小型化が図れる。更に、電池形
状についても、角型は円筒型にくらべてスペース高率が
高い利点がある。BACKGROUND OF THE INVENTION In recent years, portable electronic devices and devices using batteries have become smaller and thinner, and batteries are required to be smaller, have larger capacity, and have a longer life. In particular, batteries using a light metal such as lithium as a negative electrode active material inherently have high energy density, so they can be made smaller than lead batteries or nickel-cadmium batteries. Furthermore, regarding the shape of the battery, a square shape has the advantage of a higher space ratio than a cylindrical shape.
【０００３】0003
【発明が解決しようとする課題】しかし、リチウムイオ
ンをインターカレートする物質を含むシート状の正極と
、リチウム金属又はリチウムイオンをインターカレート
する物質を含むシート状の負極をセパレータを介して交
互に重ねて成る集合体からなるリチウム電池では、充放
電に伴い正極と負極が膨張、収縮を繰り返し、該集合体
に対して均一な圧力を加えることができないという問題
点があった。特に、角型電池では円筒型電池に比べて圧
力の不均一化の傾向が大きい。この結果電池のサイクル
寿命が短かくなるという欠点がある。[Problems to be Solved by the Invention] However, a sheet-shaped positive electrode containing a substance that intercalates lithium ions and a sheet-shaped negative electrode containing lithium metal or a substance that intercalates lithium ions are alternately arranged with a separator interposed therebetween. In a lithium battery consisting of an aggregate formed by overlapping the electrodes, the positive electrode and the negative electrode repeatedly expand and contract during charging and discharging, and there is a problem in that it is not possible to apply uniform pressure to the aggregate. In particular, prismatic batteries have a greater tendency for pressure to become uneven than cylindrical batteries. As a result, the cycle life of the battery is shortened.
【０００４】本発明は、上記問題点に鑑みなされたもの
で、長寿命のリチウム電池を提供することを目的とする
。The present invention was made in view of the above problems, and an object thereof is to provide a lithium battery with a long life.
【０００５】[0005]
【課題を解決するための手段】本発明は上記目的を達成
するべく、リチウムイオンをインターカレートする物質
を含むシート状の正極と、リチウム金属又はリチウムイ
オンをインターカレートする物質を含むシート状の負極
をセパレータを介して交互に重ねて成る集合体に対し、
加圧部材により該集合体の垂直方向に１Ｋｇ／ｃｍ２
以上の圧力を加えてなるリチウム電池である。[Means for Solving the Problems] In order to achieve the above objects, the present invention provides a sheet-shaped positive electrode containing a substance that intercalates lithium ions, and a sheet-shaped positive electrode containing lithium metal or a substance that intercalates lithium ions. For an assembly consisting of alternating negative electrodes with separators in between,
1Kg/cm2 in the vertical direction of the aggregate by the pressure member
This is a lithium battery made by applying the above pressure.
【０００６】[0006]
【実施例】以下、本発明の詳細について、実施例により
説明する。[Examples] The details of the present invention will be explained below with reference to Examples.
【０００７】（実施例１）図１は本発明の一実施例によ
るフィルム電池の断面図で、１は正極、２は負極、３は
セパレータ、４は電気絶縁板、５は板バネ（加圧部材）
、６は電槽、７は正極端子、８は負極端子である。
正極１はバナジウム酸化物（ＬｉＶ３Ｏ８）を主成分と
し、これに導電材のアセチレンブラック及びポリエチレ
ンオキシドに過塩素酸リチウムを加えた高分子固体電解
質からなるコンポジット電極である。負極２はシート状
の金属リチウムまたは、リチウムイオンをインターカレ
ートするカーボン材料と前記の高分子固体電解質とから
なるコンポジット電極である。セパレータ３は、ポリプ
ロピレン微孔膜またはポリエチレン微孔膜で、微孔内に
は前記の高分子固体電解質を含浸させたものを用い、圧
力が加わっても厚み変化が少ない構成とした。上記１，
２，３からなる電極集合体の両端を、電気絶縁板４を介
して加圧部材として板バネ５により、１Ｋｇ／ｃｍ２
で押圧する構造とした。(Embodiment 1) FIG. 1 is a sectional view of a film battery according to an embodiment of the present invention, in which 1 is a positive electrode, 2 is a negative electrode, 3 is a separator, 4 is an electrically insulating plate, and 5 is a leaf spring (pressurized). Element)
, 6 is a battery case, 7 is a positive terminal, and 8 is a negative terminal. The positive electrode 1 is a composite electrode consisting of a solid polymer electrolyte containing vanadium oxide (LiV3O8) as a main component, acetylene black as a conductive material, polyethylene oxide, and lithium perchlorate. The negative electrode 2 is a composite electrode made of sheet-like metallic lithium or a carbon material that intercalates lithium ions and the above-mentioned solid polymer electrolyte. The separator 3 is a polypropylene microporous membrane or a polyethylene microporous membrane, the pores of which are impregnated with the solid polymer electrolyte described above, so that the thickness does not change much even when pressure is applied. Above 1,
Both ends of the electrode assembly consisting of 2 and 3 are applied with a pressure of 1 kg/cm2 by a plate spring 5 as a pressing member through an electrically insulating plate 4.
The structure is such that it can be pressed with
【０００８】（実施例２）図２は、本発明を適用した他
の実施例で、電極集合体の両端を、枠体９と締付けボル
ト１０からなる加圧部材で押圧する構造としている。(Embodiment 2) FIG. 2 shows another embodiment to which the present invention is applied, and has a structure in which both ends of an electrode assembly are pressed by a pressing member consisting of a frame 9 and a tightening bolt 10.
【０００９】（実施例３）図３は、本発明を適用した他
の実施例を示す。電槽側面が内側に凹んだ構造とし、電
槽側面自体を加圧部材として電極集合体を押圧する構造
としている。(Embodiment 3) FIG. 3 shows another embodiment to which the present invention is applied. The side surface of the battery case is recessed inward, and the side surface of the battery case itself is used as a pressure member to press the electrode assembly.
【００１０】図４は、充放電サイクルの容量推移特性で
、Ａは実施例１において負極に金属リチウムを用いた電
池、Ｂは加圧部材として板バネを用いていない従来電池
の特性を示す。図４から明らかなように、本発明電池は
充放電サイクル寿命が向上していることがわかる。FIG. 4 shows the capacity transition characteristics during charge and discharge cycles, where A shows the characteristics of a battery using metallic lithium as the negative electrode in Example 1, and B shows the characteristics of a conventional battery that does not use a leaf spring as a pressure member. As is clear from FIG. 4, it can be seen that the battery of the present invention has an improved charge/discharge cycle life.
【００１１】なお、セルの押圧度とサイクル寿命との関
係は、図５に示すように、１Ｋｇ／ｃｍ２ 以上である
ことが必要である。[0011] The relationship between the degree of pressing force of the cell and the cycle life must be 1 kg/cm2 or more, as shown in Fig. 5.
【００１２】0012
【発明の効果】このように、本発明によるリチウム電池
は、充放電サイクルに伴う容量減少が少なく、長寿命が
期待でき、その工業的価値は大である。As described above, the lithium battery according to the present invention has little capacity loss due to charge/discharge cycles, can be expected to have a long life, and has great industrial value.
【図１】本発明リチウム電池の断面図である。FIG. 1 is a cross-sectional view of a lithium battery of the present invention.
【図２】本発明リチウム電池の他の実施例の側面図であ
る。FIG. 2 is a side view of another embodiment of the lithium battery of the present invention.
【図３】本発明リチウム電池の他の実施例の断面図であ
る。FIG. 3 is a sectional view of another embodiment of the lithium battery of the present invention.
【図４】電池容量と充放電サイクルとの関係図である。FIG. 4 is a diagram showing the relationship between battery capacity and charge/discharge cycles.
【図５】サイクル寿命比とセル押圧度との関係図である
。FIG. 5 is a diagram showing the relationship between cycle life ratio and cell pressing degree.
【符号の説明】 １ 正極 ２ 負極 ３ セパレータ ４ 電気絶縁板 ５ 板バネ（加圧部材） ６ 電槽 ７ 正極端子 ８ 負極端子 ９ 枠体 １０ 締付けボルト[Explanation of symbols] 1 Positive electrode 2 Negative electrode 3 Separator 4 Electrical insulation board 5 Plate spring (pressure member) 6 Battery case 7 Positive terminal 8 Negative terminal 9 Frame body 10 Tightening bolt
Claims (4)
る物質を含むシート状の正極と、リチウム金属又はリチ
ウムイオンをインターカレートする物質を含むシート状
の負極をセパレータを介して交互に重ねて成る集合体に
対し、加圧部材により該集合体の垂直方向に１Ｋｇ／ｃ
ｍ２ 以上の圧力を加えてなることを特徴とするリチウ
ム電池。[Claim 1] An assembly consisting of sheet-shaped positive electrodes containing a substance that intercalates lithium ions and sheet-shaped negative electrodes containing lithium metal or a substance that intercalates lithium ions, which are alternately stacked with separators interposed therebetween. 1 kg/c in the vertical direction of the aggregate by the pressure member.
A lithium battery characterized by being formed by applying pressure of m2 or more.
とする請求項１記載のリチウム電池。2. The lithium battery according to claim 1, wherein the pressure member is a leaf spring.
め付ける締め付け部材であることを特徴とする請求項１
記載のリチウム電池。[Claim 3] Claim 1, wherein the pressure member is a tightening member that is tightened by a frame from the outside of the battery case.
Lithium battery as described.
面であることを特徴とする請求項１記載のリチウム電池
。4. The lithium battery according to claim 1, wherein the pressure member is an inwardly recessed side surface of the battery case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3083079A JPH04294071A (en) | 1991-03-22 | 1991-03-22 | Li battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3083079A JPH04294071A (en) | 1991-03-22 | 1991-03-22 | Li battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04294071A true JPH04294071A (en) | 1992-10-19 |
Family
ID=13792180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3083079A Pending JPH04294071A (en) | 1991-03-22 | 1991-03-22 | Li battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04294071A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0777288A1 (en) | 1995-11-30 | 1997-06-04 | Asahi Glass Company Ltd. | Non-aqueous electrolyte type secondary battery |
| EP0834933A1 (en) * | 1996-10-03 | 1998-04-08 | Saft | Electrochemical generator with device for inserting and holding a group of electrodes |
| JPH10334879A (en) * | 1997-05-30 | 1998-12-18 | Sumitomo Electric Ind Ltd | Nonaqueous electrolyte secondary battery |
| WO1999005746A1 (en) * | 1997-07-25 | 1999-02-04 | Minnesota Mining And Manufacturing Company | Thermal management system and method for a solid-state energy storing device |
| WO2014007232A1 (en) * | 2012-07-04 | 2014-01-09 | 株式会社カネカ | Nonaqueous electrolyte secondary battery, secondary battery module, and method for using nonaqueous electrolyte secondary battery |
| JP2019516222A (en) * | 2016-04-19 | 2019-06-13 | ブルー・ソリューションズ・カナダ・インコーポレイテッド | Pressurized lithium metal polymer battery |
| US10629947B2 (en) | 2008-08-05 | 2020-04-21 | Sion Power Corporation | Electrochemical cell |
| US11108077B2 (en) | 2008-08-05 | 2021-08-31 | Sion Power Corporation | Application of force in electrochemical cells |
| US11456459B2 (en) | 2011-06-17 | 2022-09-27 | Sion Power Corporation | Plating technique for electrode |
| US11791511B2 (en) | 2019-11-19 | 2023-10-17 | Sion Power Corporation | Thermally insulating compressible components for battery packs |
| US11824228B2 (en) | 2019-11-19 | 2023-11-21 | Sion Power Corporation | Compression systems for batteries |
| US11923495B2 (en) | 2020-03-13 | 2024-03-05 | Sion Power Corporation | Application of pressure to electrochemical devices including deformable solids, and related systems |
| US11978917B2 (en) | 2019-11-19 | 2024-05-07 | Sion Power Corporation | Batteries with components including carbon fiber, and associated systems and methods |
| US11984575B2 (en) | 2019-11-19 | 2024-05-14 | Sion Power Corporation | Battery alignment, and associated systems and methods |
-
1991
- 1991-03-22 JP JP3083079A patent/JPH04294071A/en active Pending
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0777288A1 (en) | 1995-11-30 | 1997-06-04 | Asahi Glass Company Ltd. | Non-aqueous electrolyte type secondary battery |
| EP0834933A1 (en) * | 1996-10-03 | 1998-04-08 | Saft | Electrochemical generator with device for inserting and holding a group of electrodes |
| FR2754393A1 (en) * | 1996-10-03 | 1998-04-10 | Accumulateurs Fixes | DEVICE FOR INTRODUCING AND HOLDING AN ELECTRODES BEAM IN AN ELECTROCHEMICAL GENERATOR CONTAINER |
| JPH10334879A (en) * | 1997-05-30 | 1998-12-18 | Sumitomo Electric Ind Ltd | Nonaqueous electrolyte secondary battery |
| WO1999005746A1 (en) * | 1997-07-25 | 1999-02-04 | Minnesota Mining And Manufacturing Company | Thermal management system and method for a solid-state energy storing device |
| US11735761B2 (en) | 2008-08-05 | 2023-08-22 | Sion Power Corporation | Application of force in electrochemical cells |
| US10629947B2 (en) | 2008-08-05 | 2020-04-21 | Sion Power Corporation | Electrochemical cell |
| US11121397B2 (en) | 2008-08-05 | 2021-09-14 | Sion Power Corporation | Application of force in electrochemical cells |
| US11108076B2 (en) | 2008-08-05 | 2021-08-31 | Sion Power Corporation | Application of force in electrochemical cells |
| US11108077B2 (en) | 2008-08-05 | 2021-08-31 | Sion Power Corporation | Application of force in electrochemical cells |
| US11456459B2 (en) | 2011-06-17 | 2022-09-27 | Sion Power Corporation | Plating technique for electrode |
| JPWO2014007232A1 (en) * | 2012-07-04 | 2016-06-02 | 株式会社カネカ | Nonaqueous electrolyte secondary battery, secondary battery module, and method of using nonaqueous electrolyte secondary battery |
| WO2014007232A1 (en) * | 2012-07-04 | 2014-01-09 | 株式会社カネカ | Nonaqueous electrolyte secondary battery, secondary battery module, and method for using nonaqueous electrolyte secondary battery |
| US10505222B2 (en) | 2016-04-19 | 2019-12-10 | Blue Solutions Canada Inc. | Pressurized lithium metal polymer battery |
| EP3446355A4 (en) * | 2016-04-19 | 2019-10-23 | Blue Solutions Canada Inc. | Pressurized lithium metal polymer battery |
| JP2019516222A (en) * | 2016-04-19 | 2019-06-13 | ブルー・ソリューションズ・カナダ・インコーポレイテッド | Pressurized lithium metal polymer battery |
| US11791511B2 (en) | 2019-11-19 | 2023-10-17 | Sion Power Corporation | Thermally insulating compressible components for battery packs |
| US11824228B2 (en) | 2019-11-19 | 2023-11-21 | Sion Power Corporation | Compression systems for batteries |
| US11929523B2 (en) | 2019-11-19 | 2024-03-12 | Sion Power Corporation | Batteries, and associated systems and methods |
| US11978917B2 (en) | 2019-11-19 | 2024-05-07 | Sion Power Corporation | Batteries with components including carbon fiber, and associated systems and methods |
| US11984575B2 (en) | 2019-11-19 | 2024-05-14 | Sion Power Corporation | Battery alignment, and associated systems and methods |
| US12051829B2 (en) | 2019-11-19 | 2024-07-30 | Sion Power Corporation | Systems and methods for applying and maintaining compression pressure on electrochemical cells |
| US11923495B2 (en) | 2020-03-13 | 2024-03-05 | Sion Power Corporation | Application of pressure to electrochemical devices including deformable solids, and related systems |
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