JPH01294350A - Electrochemical cell - Google Patents
Electrochemical cellInfo
- Publication number
- JPH01294350A JPH01294350A JP63124546A JP12454688A JPH01294350A JP H01294350 A JPH01294350 A JP H01294350A JP 63124546 A JP63124546 A JP 63124546A JP 12454688 A JP12454688 A JP 12454688A JP H01294350 A JPH01294350 A JP H01294350A
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- battery case
- cell
- active material
- electrode active
- 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
- 239000007774 positive electrode material Substances 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 239000007773 negative electrode material Substances 0.000 claims description 4
- 239000005486 organic electrolyte Substances 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 238000010292 electrical insulation Methods 0.000 claims 1
- 239000011347 resin Substances 0.000 abstract description 12
- 229920005989 resin Polymers 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 abstract description 5
- 239000006185 dispersion Substances 0.000 abstract 2
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000001007 puffing effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—Metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
- H01M50/124—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
- H01M50/124—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure
- H01M50/1243—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure characterised by the internal coating on the casing
-
- 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、正極にＭｎＯ！等の酸化物を用いた電気化学
セルに関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention uses MnO! The present invention relates to electrochemical cells using oxides such as
本発明は、負極活物質とＭ ｎ Ｏを等の酸化物からな
る正極活物質及び有機電解液を、正極端子板を兼ねる電
池ケースと負極端子板を兼ねる封口板及び前記電池ケー
スと封口板との間に介在する電気絶縁パフキングにより
密封した電気化学セルにおいて、前記電池ケースの内面
にアルミをクラッドすることにより、ＭｎＯ，等の酸化
物からなる正極活物質による電池ケース内面の酸化皮膜
の成長を少な（し、正極と正極端子板を兼ねる電池ケー
スとの電気導電性の向上を図るものである。The present invention combines a negative electrode active material, a positive electrode active material made of an oxide such as MnO, and an organic electrolyte into a battery case that also serves as a positive terminal plate, a sealing plate that also serves as a negative terminal plate, and the battery case and the sealing plate. In an electrochemical cell sealed by electrically insulating puffing interposed between the cells, the inner surface of the battery case is clad with aluminum to prevent the growth of an oxide film on the inner surface of the battery case due to the positive electrode active material made of oxides such as MnO. This is intended to improve electrical conductivity between the positive electrode and the battery case, which also serves as the positive terminal plate.
従来、外側にＮｉメツキしたＳＵＳ材からなる電池ケー
スの内面に、金属ＳＯＳネット、あるいはリングを溶接
または載置したり、導電性樹脂を塗布したりして、正極
と電池ケースとのリードを取っていた。Conventionally, leads between the positive electrode and the battery case were established by welding or placing a metal SOS net or ring on the inner surface of a battery case made of SUS material with Ni plating on the outside, or by applying conductive resin. was.
従来のＳＵＳ材からなる電池ケースは、Ｍ ｎ Ｏｚ等
の酸化物からなる正極活物質と直接接触することにより
、局部電池をつくり接触面に酸化皮膜を形成し、時間と
ともにその膜厚は大きくなり、正極と電気導電性を悪く
していた。そのため、導電性樹脂を塗布したり、ネット
、リング等を溶接したりして、正極と電池ケースとのリ
ードを取らなくてはならないという欠点があった。Conventional battery cases made of SUS materials create local batteries by coming into direct contact with positive electrode active materials made of oxides such as MnOz, forming an oxide film on the contact surface, and the thickness of this film increases over time. , which had poor electrical conductivity with the positive electrode. Therefore, there was a drawback that the lead between the positive electrode and the battery case had to be established by applying a conductive resin or welding a net, a ring, or the like.
上記の問題点を解決するために本発明では、ＳＵＳ材に
比べ酸化皮膜の成長が少ないアルミを内側にクラッドし
た電池ケースを用いることにより、酸化皮膜による電気
特性に対する悪影響を小さくし、正極と正極端子板を兼
ねる電池ケースとの電気導電性の向上をＭす、導電性樹
脂を塗布したりリング停溶接したりする手間を省こうと
したものである。In order to solve the above-mentioned problems, the present invention uses a battery case that is clad on the inside with aluminum, which has less oxide film growth than SUS material, to reduce the negative effect of the oxide film on electrical properties, and to This is intended to improve electrical conductivity with the battery case, which also serves as a terminal plate, by eliminating the need for applying conductive resin and ring stop welding.
正極のリードは、正極端子板を兼ねる電池ケースとの接
触により取られているが、正極が酸化物の場合、必ず正
極と電池ケース間で局部電池をつくり、電池ケースの接
触面に酸化皮膜を形成する。The positive electrode lead is connected to the battery case, which also serves as the positive terminal plate, but if the positive electrode is an oxide, a local battery is created between the positive electrode and the battery case, and an oxide film is formed on the contact surface of the battery case. Form.
この酸化皮膜は正極が存在する限り厚くなっていき、正
極と電池ケースとのリードを悪くし、大きな電流を取り
出す際に悪影響を及ぼしている、又、このため導電性樹
脂の塗布等が必要とされている。This oxide film becomes thicker as long as the positive electrode exists, impairing the lead between the positive electrode and the battery case, and having an adverse effect on extracting large currents.For this reason, it is necessary to apply conductive resin, etc. has been done.
本発明のようにＳＵＳ材に比べ酸化皮膜の成長が少ない
アルミを用いれば、膜厚もＳＵＳ材に比べ薄くなるため
導電性樹脂の塗布がなくとも大きな電流が取り出せるよ
うになる。If aluminum, which has less oxide film growth than SUS material, is used as in the present invention, the film thickness will be thinner than SUS material, so a large current can be extracted without applying a conductive resin.
以下、本発明の実施例を図により詳述する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
第１図は本発明の一実施例によるリチウム電池の断面図
であり、電池はＣＲ２０１６である。FIG. 1 is a cross-sectional view of a lithium battery according to an embodiment of the present invention, and the battery is CR2016.
図中、ｌは正極電池ケース、２はＭｎＯ，を主体とした
正極活物質、３はセパレータ、４は頁捲封口板５内面に
配設され、圧着されているＬｉを主体とする負極活物質
である。６は電気絶縁バッキングであり、正極電池ブー
ス１と負極封口板５の間でカシメられている。In the figure, l is a positive electrode battery case, 2 is a positive electrode active material mainly composed of MnO, 3 is a separator, and 4 is a negative electrode active material mainly composed of Li, which is disposed and crimped on the inner surface of the page winding plate 5. It is. Reference numeral 6 denotes an electrically insulating backing, which is caulked between the positive electrode battery booth 1 and the negative electrode sealing plate 5.
Ｍｎ０ｚを主体とした正極活物質２が接触する面に、ア
ルミをクラッドした電池ケース１を使用した本発明によ
る電池と材質がＳＵＳ材の電池ケースを使用した従来の
電池１とその電池ケース内面に導電性樹脂を塗布した従
来電池２との各放電深度での閉路電圧を比較した。閉路
電圧は一１０℃で測定し、負荷抵抗５００Ωで５秒間放
電した時の最小値である。結果を第−表に示す。データ
はｎ＝１２で、単位はＶである。A battery according to the present invention using a battery case 1 with aluminum cladding on the surface in contact with a positive electrode active material 2 mainly made of Mn0z, and a conventional battery 1 using a battery case made of SUS material, and the inner surface of the battery case. The closed circuit voltage at each depth of discharge was compared with conventional battery 2 coated with conductive resin. The closed circuit voltage was measured at -10°C and is the minimum value when discharged for 5 seconds with a load resistance of 500Ω. The results are shown in Table 1. The data is n=12 and the unit is V.
上記表より明らかなように、本発明電池は従来電池１に
比べて、各放電深度における閉路電圧が高く、かつバラ
ツキも小さく優れていることがわかる。又、従来電池２
と比べても、閉路電圧、バラツキともほぼ同等の値を示
しており、導電性樹脂と同じ効果があると言える。As is clear from the above table, it can be seen that the battery of the present invention is superior to the conventional battery 1 in that the closed circuit voltage at each depth of discharge is higher and the variation is smaller. Also, conventional battery 2
Even when compared, both the closed-circuit voltage and the variation show almost the same values, and it can be said that it has the same effect as conductive resin.
以上のように本発明では、Ｍ ｎ ０２等の酸化物を主
体とする正極活物質が接触する面にアルミをクラッドし
た電池ケースを用いることにより、接触面の酸化皮膜の
成長をある程度抑え、正極と電池ケースとのリード性を
良くし、大電流を取り出すことが出来る。又、導電性樹
脂の塗布等の手間を省くことが出来るなど多くの効果を
有する。As described above, in the present invention, by using a battery case in which the surface in contact with the positive electrode active material mainly composed of oxides such as Mn02 is clad with aluminum, the growth of the oxide film on the contact surface is suppressed to some extent, and the positive electrode active material is It improves the leadability between the battery case and the battery case, allowing a large current to be extracted. Moreover, it has many effects such as being able to save time and effort such as applying conductive resin.
第１図は本発明を適用した実施例を示す断面図である。
１・・・正極電池ケース
２・・・正極活物質
３・・・セパレータ
４・・・負極活物質
５・・・負極封口板
６・・・電気絶縁パッキング
以上
出願人 セイコー電子部品株式会社
代理人 弁理士 林 敬 之 助４（支）駒す駿
賃
第１図FIG. 1 is a sectional view showing an embodiment to which the present invention is applied. 1...Positive electrode battery case 2...Positive electrode active material 3...Separator 4...Negative electrode active material 5...Negative electrode sealing plate 6...Electric insulation packing and above Applicant Seiko Electronic Components Co., Ltd. Agent Patent Attorney Takayuki Hayashi 4 (branch) Komasu Shunhi Figure 1
Claims (1)
質及び有機電解液を、正極端子板を兼ねる電池ケースと
負極端子板を兼ねる封口板及び前記電池ケースと封口板
との間に介在する電気絶縁パッキングにより密封した電
気化学セルにおいて、前記電池ケースの内面にアルミを
クラッドしたことを特徴とする電気化学セル。A negative electrode active material, a positive electrode active material consisting of an oxide such as MnO_2, and an organic electrolyte are transferred to a battery case that also serves as a positive electrode terminal plate, a sealing plate that also serves as a negative electrode terminal plate, and an electrical insulation interposed between the battery case and the sealing plate. An electrochemical cell sealed by packing, characterized in that the inner surface of the battery case is clad with aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63124546A JPH01294350A (en) | 1988-05-20 | 1988-05-20 | Electrochemical cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63124546A JPH01294350A (en) | 1988-05-20 | 1988-05-20 | Electrochemical cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01294350A true JPH01294350A (en) | 1989-11-28 |
Family
ID=14888153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63124546A Pending JPH01294350A (en) | 1988-05-20 | 1988-05-20 | Electrochemical cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01294350A (en) |
-
1988
- 1988-05-20 JP JP63124546A patent/JPH01294350A/en active Pending
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