JPS59169062A - Flat lithium cell with lead terminals - Google Patents
Flat lithium cell with lead terminalsInfo
- Publication number
- JPS59169062A JPS59169062A JP58043886A JP4388683A JPS59169062A JP S59169062 A JPS59169062 A JP S59169062A JP 58043886 A JP58043886 A JP 58043886A JP 4388683 A JP4388683 A JP 4388683A JP S59169062 A JPS59169062 A JP S59169062A
- Authority
- JP
- Japan
- Prior art keywords
- negative electrode
- lithium
- terminal
- lead terminal
- thickness
- 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
Classifications
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/562—Terminals characterised by the material
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/564—Terminals characterised by their manufacturing process
- H01M50/566—Terminals characterised by their manufacturing process by welding, soldering or brazing
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はリード端子付き扁平形リチウム電池の改良に係
り、リチウム負極の厚みを０．６１１１１１以上に規制
することによって、リード端子溶接時のリチウムの溶融
による内部短絡の発生を防止し、電池特性の良好なリー
ド端子付き扁平形リチウム電池を提供することを目的と
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvement of a flat lithium battery with lead terminals, and by regulating the thickness of the lithium negative electrode to 0.611111 or more, occurrence of internal short circuit due to melting of lithium during lead terminal welding is prevented. The object of the present invention is to provide a flat lithium battery with lead terminals that prevents the above problems and has good battery characteristics.
リチウム電池は貯蔵特性がすぐれていることから、最近
、電気機器のバックアップ用電源として使用されること
が多くなってきた。このような用途においては、本来、
機器の耐用期間中、電池の取り替えは行なわれないので
、電池の機器への組込みは機器の回路基板に電池をはん
だ付けなどで固定することによって行なわれる。そのた
め、はんだ付けなどがしやすいように、リード端子をあ
らかじめ電池に取り付けておく必要がある。Because lithium batteries have excellent storage characteristics, they have recently been increasingly used as backup power sources for electrical equipment. In such applications, originally,
Since the battery is not replaced during the life of the device, the battery is integrated into the device by fixing the battery to the device's circuit board by soldering or the like. Therefore, it is necessary to attach lead terminals to the battery in advance to facilitate soldering.
このリード端子の取り付けは、電池端子としての負極端
子板や正極缶にリード熾子を直接スポット溶接すること
によって行なわれているが、負極に使用されているリチ
ウムは約１８６℃で溶融するため、負極端子板に大きな
熱量がかかるとリチウムが溶融しリチウムの厚さが薄い
場合には溶融したリチウムがセパレーターを通過し内部
短絡を引きおこす。The lead terminals are attached by spot-welding the lead wire directly to the negative terminal plate or positive electrode can that serves as the battery terminal, but since the lithium used in the negative electrode melts at about 186°C, If a large amount of heat is applied to the negative terminal plate, the lithium will melt, and if the lithium is thin, the molten lithium will pass through the separator and cause an internal short circuit.
本発明者らは、リード端子溶接時のリチウムの溶融によ
る内部短絡の発生を防止すべく種々研究を重ねた結果、
リチウム負極の厚さを０．６１ｆｆ以上に規制するとき
は、上記目的が容易に達成され、電池特性の良好なリー
ド端子付き扁平形リチウム電池が容易に得られることを
見出し、本発明を完成するにいたった。The inventors of the present invention have conducted various studies to prevent the occurrence of internal short circuits due to melting of lithium during lead terminal welding.
The inventors have discovered that when the thickness of the lithium negative electrode is regulated to 0.61ff or more, the above objects can be easily achieved and a flat lithium battery with lead terminals with good battery characteristics can be easily obtained, and the present invention has been completed. It arrived.
つぎに本発明の実施例を図面、とともに説明する。Next, embodiments of the present invention will be described with reference to the drawings.
第１図はリード端子を示す斜視図であり、このリード端
子（１）は先端部が約０．８闘厚の平担状に圧縮された
直径０．７闘のニッケル線よりなるものである。Fig. 1 is a perspective view showing a lead terminal, and the lead terminal (1) is made of a nickel wire with a diameter of 0.7mm and compressed into a flat shape with a tip of about 0.8mm thick. .
なお、（１ａ）は平担部であり、この部分が溶接に供さ
れる。In addition, (1a) is a flat part, and this part is provided for welding.
第２図はリード端子が取り付けられる扁平形リチウム電
池を示すもので、（２）は第１図に示したリード端子（
１）がスポット溶接されるニッケルーステンレス鋼クラ
、ラド板製の負極端子板である。（３）は二酸化マンガ
ン１００ ｍ （重量部、以下同様）、りん状黒鉛１０
部およびポリテトラフルオルエチレン２部からなる合剤
粉末を加圧成形してなる正極で、（４） Ｆｉ正極（３
）の集電体としてのステンレス鋼製網である。（５）は
ニッケルーステンレス鋼クラッド板製の正極缶でステン
レス鋼面が電池内部側に配置されており、（６）はポリ
プロピレン不織布よりなるセパレータで、（７）はリチ
ウム負極であり、このリチウム負極（７）は円板状のリ
チウムを負極端子板（２）に挿入し、負極端子ａ（２）
の内面にスポット溶接されたステンレス鋼製網（８）に
圧着することにより構成されている。（９）けポリプロ
ピレン製の環状ガスケットであり、この電池の電解液に
はプロピレンカーボネートと１．２−ジメトキシエタン
との容量比が２：１の混合溶媒に過塩素酸リチウムを０
．５モル／ｌ溶解させたものが使用されて−る。（１０
は電池の外周部にかぶせ念熱収縮性塩化ビニル樹脂チュ
ーブで、これは後に取り付けられる負極側のリード端子
と正極缶（５）との間の短絡を防止するためのものであ
る。Figure 2 shows a flat lithium battery to which lead terminals are attached, and (2) shows the lead terminals shown in Figure 1 (
1) is a negative terminal plate made of nickel-stainless steel and Rad plate that is spot welded. (3) is manganese dioxide 100 m (parts by weight, the same applies below), phosphorous graphite 10
(4) Fi positive electrode (3)
) is a stainless steel mesh as a current collector. (5) is a positive electrode can made of a nickel-stainless steel clad plate with the stainless steel side placed inside the battery, (6) is a separator made of polypropylene nonwoven fabric, and (7) is a lithium negative electrode. The negative electrode (7) is made by inserting a disk-shaped lithium into the negative electrode terminal plate (2), and connecting it to the negative electrode terminal a (2).
It is constructed by crimping a stainless steel mesh (8) spot-welded to the inner surface of the holder. (9) It is an annular gasket made of polypropylene, and the electrolyte of this battery is a mixed solvent of propylene carbonate and 1,2-dimethoxyethane with a volume ratio of 2:1 and 0% lithium perchlorate.
．． A solution of 5 mol/l is used. (10
is a heat-shrinkable vinyl chloride resin tube that is placed over the outer periphery of the battery, and is used to prevent a short circuit between the negative electrode side lead terminal and the positive electrode can (5), which will be attached later.
この電池の負極端子板（２）の外面側に前記のＩＪ ＋
ド端子（１）をスポット溶接し、正極缶（５）の外面側
に前記負極側のリード端子（１）と同様のリード端子（
１１）をスポット溶接して！ｇ８図に示すようなリード
端子付き扁平形リチウム電池が形成される。The above IJ + is attached to the outer surface of the negative terminal plate (2) of this battery.
A lead terminal (1) similar to the lead terminal (1) on the negative electrode side is attached to the outer surface of the positive electrode can (5) by spot welding.
Spot weld 11)! A flat lithium battery with lead terminals as shown in Figure g8 is formed.
上記のように負極端子＠ （２）にリード端子（１）を
スポット溶接する際、リチウム負極（７）にも多量の熱
量がかかり、それによってリチ□ウムの一部が溶融する
。ちなみにリチウムの融点は約１８６℃で□あるが、ス
ポット溶接時の溶接温度け１，１００’Ｇ！Ｋまで上昇
させる必要がある。それ故、上記のようにリチウムに溶
融が生じた際、リチウム負極（７）の厚さが薄いと４ａ
４図に示すようにスポット溶接点（２）近くの溶融した
リチウム（７ａ）がセパレータ（６） をａｍして、正
極（３）と電気的回路をつくり内部短絡を引き起す。し
かし、リチウム負極（７〕の厚さが充分にあると第５図
に示すようにリチウム負極（７）の溶融は厚さの途中で
止まり、セパレータ（６）にまで達せず、内部短絡を生
じない。When spot welding the lead terminal (1) to the negative electrode terminal (2) as described above, a large amount of heat is also applied to the lithium negative electrode (7), thereby melting a portion of the lithium. By the way, the melting point of lithium is approximately 186℃, but the welding temperature during spot welding is 1,100'G! It is necessary to raise it to K. Therefore, when lithium melts as described above, if the thickness of the lithium negative electrode (7) is thin, 4a
As shown in Figure 4, molten lithium (7a) near the spot welding point (2) hits the separator (6), creates an electrical circuit with the positive electrode (3), and causes an internal short circuit. However, if the lithium negative electrode (7) is thick enough, as shown in Figure 5, the melting of the lithium negative electrode (7) will stop halfway through its thickness and will not reach the separator (6), causing an internal short circuit. do not have.
リード端子（１）としては、実用上、９０度に曲げ起こ
して２〜８ｋｇのビール強度を有することが望ましく、
そのためには、ニッケル線などのリード端子となるリー
ド体を溶接がしやすいように、溶接に供する先端部を平
担状に圧縮したときに、その平担部（１ａ）が０．２〜
Ｑ、４ＭＭ程度の厚さを有していることが望まれる。そ
して、このものを前記のよう彦溶接強度が出るようにス
ポット溶接するには、溶接条件として蓄勢エネルギーｓ
ｏｗ、ｓ、通電時間２ ｍｓ、加圧力１の条件が必要で
あり、２点スポット溶接が好ましい。このような溶接条
件下ではリチウム負極（７）はその厚さが０．６０未満
では溶融によって内部短絡が生じやすく、少なくともＱ
３ＭＭ。For practical purposes, it is desirable for the lead terminal (1) to have a beer strength of 2 to 8 kg when bent at 90 degrees,
To this end, in order to make it easier to weld a lead body that will become a lead terminal such as a nickel wire, when the tip part to be welded is compressed into a flat shape, the flat part (1a) is 0.2~
Q: It is desired that the thickness be approximately 4 mm. In order to spot-weld this material so as to obtain the Hiko welding strength as described above, the welding condition is the stored energy s.
The conditions of ow, s, energization time of 2 ms, and pressing force of 1 are required, and two-point spot welding is preferable. Under such welding conditions, if the thickness of the lithium negative electrode (7) is less than 0.60, internal short circuits are likely to occur due to melting, and at least Q
3MM.
好ましくは０．６５１ＥＩ以上の厚さが必要である。Preferably, a thickness of 0.651EI or more is required.
第６図にリチウム負極（７）の厚さと完成電池の内部短
絡発生率の関係を示す。FIG. 6 shows the relationship between the thickness of the lithium negative electrode (7) and the rate of occurrence of internal short circuits in completed batteries.
第６図に示すように、リチウム負極（７）の厚さが０．
６１ｆｆ以上あると、内部短絡の発生が防止され、直接
負極端子板（２）にリード端子（１）をスポット溶接す
ることが可能となる。As shown in FIG. 6, the thickness of the lithium negative electrode (7) is 0.
When it is 61ff or more, the occurrence of internal short circuits is prevented and it becomes possible to spot weld the lead terminal (1) directly to the negative terminal plate (2).
なお、本発明においてリード端子（２）、α力としては
例えばニッケル線、ニッケルメッキまたは錫メッキした
鉄線あるいけステンレス鋼線で直径が０．７〜１．０１
ｆｆで、スポット溶接に供される先端部は厚さ０．２〜
Ｑ、４ ｙｔｗ程度にプレスして平担状にしたものを用
いるのが好ましい。In the present invention, the lead terminal (2) and α force are, for example, nickel wire, nickel-plated or tin-plated iron wire, or stainless steel wire with a diameter of 0.7 to 1.01 mm.
ff, the tip part used for spot welding has a thickness of 0.2~
It is preferable to use a material that has been pressed to a flat shape of about Q,4 ytw.
第１図はリード端子を示す斜視図で、第２図はリード端
子取付前の扁平形リチクム電池の断面図であり、第８図
は本発明に係るリード端子付き扁平形リチクム電池の一
例を示す断面図である。第４図および第５図は負極端子
板にリード端子をスポット溶接する際のリチウム負極の
挙動を模式的に示す断面図、第６図はリチウム負極の厚
さと完成電池の内部短絡発生率の関係を示す図である。
（１）・・・負極側のリード端子、 （１ａ）・・・平
担部、（２）・・・負極端子板、 （３）・・・正極、
（５）・・・正極缶、（７）・・・リチウム負極、 （
ｌ◇・・・正極側のリード端子特許出願人 日立マクセ
ル株式会社
首１図
１（］
π２図
官３図
π４図
難
糾
発
芳５図 １
牟
升６図
１）千りムＪ貞袖／＋１さくｍｍ）FIG. 1 is a perspective view showing a lead terminal, FIG. 2 is a sectional view of a flat lithicium battery before lead terminals are attached, and FIG. 8 is an example of a flat lithicium battery with a lead terminal according to the present invention. FIG. Figures 4 and 5 are cross-sectional views schematically showing the behavior of the lithium negative electrode when spot welding the lead terminal to the negative terminal plate, and Figure 6 is the relationship between the thickness of the lithium negative electrode and the rate of internal short circuits in the completed battery. FIG. (1)...Negative electrode side lead terminal, (1a)...Flat part, (2)...Negative terminal plate, (3)...Positive electrode,
(5)...Positive electrode can, (7)...Lithium negative electrode, (
l◇...Positive side lead terminal Patent applicant Hitachi Maxell Co., Ltd. Head 1 Figure 1 (] π2 Figure 3 Figure π4 Diagram 5 Figure 1 Square 6 Figure 1) Senrimu J Sadasode/ +1 mm)
Claims (1)
より電池に取り付けてなるリード端子付き扁平形リチウ
ム電池において、溶接点に対応する負極端子板内面に圧
着したリチウム負極の厚みが０．６ｆｆ以上であること
を特徴とするリード端子付き扁平形リチウム電池。 ２、前記リード端子が溶接される部分は平担状で本体部
分は断面円形であり、上記平担状部分の厚さが０．２〜
０．４０である特許請求の範囲＠１項記載のリード端子
付き扁平形リチウム電池。[Claims] 1. In a flat lithium battery with a lead terminal in which a lead terminal for extracting electricity is attached to the battery by spot welding, the thickness of the lithium negative electrode crimped to the inner surface of the negative terminal plate corresponding to the welding point is A flat lithium battery with a lead terminal, characterized by having a capacity of 0.6ff or more. 2. The part to which the lead terminal is welded has a flat shape, and the main body part has a circular cross section, and the thickness of the flat part is 0.2~
A flat lithium battery with a lead terminal according to claim 1, which has a lead terminal of 0.40.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58043886A JPH0644483B2 (en) | 1983-03-16 | 1983-03-16 | Flat type lithium battery with lead terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58043886A JPH0644483B2 (en) | 1983-03-16 | 1983-03-16 | Flat type lithium battery with lead terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59169062A true JPS59169062A (en) | 1984-09-22 |
| JPH0644483B2 JPH0644483B2 (en) | 1994-06-08 |
Family
ID=12676184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58043886A Expired - Lifetime JPH0644483B2 (en) | 1983-03-16 | 1983-03-16 | Flat type lithium battery with lead terminal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0644483B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2126810A4 (en) | 2007-02-21 | 2011-10-26 | Advanced Custom Engineered Systems & Equipment Co | System for monitoring a container and the items therein |
| US8146798B2 (en) | 2008-11-07 | 2012-04-03 | Advanced Custom Engineered Systems & Equipment Co. | Method and apparatus for monitoring waste removal and administration |
| CA3019645C (en) | 2016-03-31 | 2022-03-15 | Advanced Custom Engineered Systems & Equipment Company | Systems & method for interrogating, publishing and analyzing information related to a waste hauling vehicle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54137130U (en) * | 1978-03-17 | 1979-09-22 | ||
| JPS5684880A (en) * | 1979-12-11 | 1981-07-10 | Hitachi Maxell Ltd | Battery with nonaqueous electrolyte |
| JPS57136168A (en) * | 1981-02-18 | 1982-08-23 | Fujitec Co Ltd | Detecting method for moving distance of elevator |
| JPS57136168U (en) * | 1981-02-20 | 1982-08-25 | ||
| JPS57138265U (en) * | 1981-02-24 | 1982-08-28 | ||
| JPS57189464A (en) * | 1981-05-15 | 1982-11-20 | Hitachi Maxell Ltd | Manufacture of organic electrolyte battery |
| JPS5835863A (en) * | 1981-08-28 | 1983-03-02 | Hitachi Maxell Ltd | Manufacture of lithium battery with lead body |
-
1983
- 1983-03-16 JP JP58043886A patent/JPH0644483B2/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54137130U (en) * | 1978-03-17 | 1979-09-22 | ||
| JPS5684880A (en) * | 1979-12-11 | 1981-07-10 | Hitachi Maxell Ltd | Battery with nonaqueous electrolyte |
| JPS57136168A (en) * | 1981-02-18 | 1982-08-23 | Fujitec Co Ltd | Detecting method for moving distance of elevator |
| JPS57136168U (en) * | 1981-02-20 | 1982-08-25 | ||
| JPS57138265U (en) * | 1981-02-24 | 1982-08-28 | ||
| JPS57189464A (en) * | 1981-05-15 | 1982-11-20 | Hitachi Maxell Ltd | Manufacture of organic electrolyte battery |
| JPS5835863A (en) * | 1981-08-28 | 1983-03-02 | Hitachi Maxell Ltd | Manufacture of lithium battery with lead body |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0644483B2 (en) | 1994-06-08 |
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