JPH0644483B2 - Flat type lithium battery with lead terminal - Google Patents
Flat type lithium battery with lead terminalInfo
- Publication number
- JPH0644483B2 JPH0644483B2 JP58043886A JP4388683A JPH0644483B2 JP H0644483 B2 JPH0644483 B2 JP H0644483B2 JP 58043886 A JP58043886 A JP 58043886A JP 4388683 A JP4388683 A JP 4388683A JP H0644483 B2 JPH0644483 B2 JP H0644483B2
- Authority
- JP
- Japan
- Prior art keywords
- lead terminal
- lithium
- negative electrode
- flat
- battery
- 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.)
- Expired - Lifetime
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)
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0.6mm以上に規制するととも
に、リード端子の材質とその溶接部分の厚さを特定する
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 an improvement in a flat type lithium battery with a lead terminal, in which the thickness of the lithium negative electrode is restricted to 0.6 mm or more, and the material of the lead terminal and the thickness of the welded portion thereof are specified. Thus, it is an object of the present invention to provide a flat lithium battery with a lead terminal, which prevents an internal short circuit due to melting of lithium during welding of the lead terminal 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、電気機器のバツクアツプ用電源として使用されるこ
とが多くなつてきた。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つて行なわれる。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。Since lithium batteries have excellent storage characteristics, they have recently been often used as a power source for backup of electric devices. In such applications, the battery is not originally replaced during the life of the device, so the battery is incorporated into the device by fixing the battery to the circuit board of the device by soldering or the like. . Therefore, it is necessary to previously attach the lead terminals to the battery so that soldering or the like can be easily performed.
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端子を直接スポツト溶接すること
によつ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℃で溶接するため、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。This lead terminal is attached by spot welding the lead terminal directly to the negative electrode terminal plate or positive electrode can as the battery terminal, but since the lithium used in the negative electrode is welded at about 186 ° C. When a large amount of heat is applied to the negative electrode terminal plate, lithium melts, and when the lithium is thin, the molten lithium passes through the separator and causes 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0.6mm以上に規制するとともに、
リード端子の材質をニッケル、鉄またはステンレス鋼に
特定し、かつリード端子の溶接部分の厚さを0.2〜0.4mm
に特定するときは、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つた。The present inventors have conducted various studies to prevent the occurrence of internal short circuit due to melting of lithium during welding of lead terminals,
While limiting the thickness of the lithium negative electrode to 0.6 mm or more,
The lead terminal material is specified as nickel, iron or stainless steel, and the thickness of the welded part of the lead terminal is 0.2 to 0.4 mm.
In particular, the inventors have found that the above object can be easily achieved, and a flat lithium battery with lead terminals having good battery characteristics can be easily obtained, and have completed the present invention.
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0.3mm厚の平担状に圧縮された直径0.
7mmのニッケル線よりなるものである。なお、(1a)は平
担部であり、この部分が溶接に供される。FIG. 1 is a perspective view showing a lead terminal. This lead terminal (1) has a tip portion of a diameter of about 0.3 mm and a diameter of 0.
It consists of 7 mm nickel wire. Note that (1a) is a flat portion, and this portion is used 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
スポツト溶接されるニッケル−ステンレス鋼クラツド板
製の負極端子板である。(3)は二酸化マンガン100部（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)は正極(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−ステンレス鋼クラツド板
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
板(2)の内面にスポツ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)はポリプロ
ピレン製の環状ガスケツトであり、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
／溶解させたものが使用されている。(10)は電池の外
周部にかぶせた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。Fig. 2 shows a flat lithium battery to which lead terminals are attached. (2) is the negative terminal plate made of nickel-stainless steel cladding plate to which the lead terminal (1) shown in Fig. 1 is spot welded. is there. (3) is a positive electrode obtained by press-molding a mixture powder consisting of 100 parts of manganese dioxide (parts by weight, the same applies hereinafter), 10 parts of phosphorous graphite and 2 parts of polytetrafluoroethylene, and (4) is a positive electrode ( It is a net made of stainless steel as a collector of 3). (5) is a positive electrode can made of nickel-stainless steel cladding plate, the stainless steel surface is arranged inside the battery, (6) is a separator made of polypropylene nonwoven fabric, (7) is a lithium negative electrode, this lithium The negative electrode (7) is made by inserting disk-shaped lithium into the negative electrode terminal plate (2) and spot-welded to the inner surface of the negative electrode terminal plate (2).
It is configured by crimping to. (9) is a polypropylene cyclic gasket, in which 0.5 mol / mol of lithium perchlorate is dissolved in a mixed solvent having a capacity ratio of propylene carbonate and 1,2-dimethoxyethane of 2: 1 in the electrolyte of this battery. Are used. (10) is a heat-shrinkable vinyl chloride resin tube that is put on the outer periphery of the battery.
This is to prevent a short circuit with (5).
この電池の負極端子板(2)の外面側に前記のリード端子
(1)をスポツト溶接し、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)をスポツト溶
接して第８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。On the outer surface side of the negative electrode terminal plate (2) of this battery, the lead terminal
(1) is spot-welded, and a lead terminal (11) similar to the lead terminal (1) on the negative electrode side is spot-welded to the outer surface of the positive electrode can (5) to form a flat terminal with lead terminals as shown in FIG. A lithium battery is formed.
上記のように負極端子板(2)にリード端子(1)をスポツト
溶接する際、リチウム負極(7)にも多量の熱量がかか
り、それによつ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、スポツト溶接時の
溶接温度は1,100℃に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)の厚さが薄いと第４図に示すようにスポツト溶
接点(12)近くの溶融したリチウム(7a)がセパレータ(6)
を通過して、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 the lead terminal (1) is spot-welded to the negative electrode terminal plate (2) as described above, a large amount of heat is also applied to the lithium negative electrode (7), which causes a part of the lithium to melt. By the way, the melting point of lithium is about 186 ° C, but the welding temperature during spot welding must be raised to 1,100 ° C. Therefore, when the lithium is melted as described above, if the thickness of the lithium negative electrode (7) is thin, the molten lithium (7a) near the spot welding point (12) is separated by the separator ( 6)
Passing through, an electric circuit is created with the positive electrode (3) to cause an internal short circuit. However, when the thickness of the lithium negative electrode (7) is sufficient, as shown in FIG. 5, the melting of the lithium negative electrode (7) stops in the middle of the thickness and does not reach the separator (6), causing an internal short circuit. Absent.
リード端子(1)としては、実用上、90度に曲げ起こして
２〜３kgのピール強度を有することが望ましく、そのた
めには、ニツ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、その平坦部(1a)を0.2〜0.4mmの厚さにしておく
ことが必要である。すなわち、リード端子(1)の溶接部
分である平坦部(1a)の厚さが0.2mmより薄い場合はリー
ド端子(1)として必要な強度が確保できず、また0.4mmよ
り厚くなるとスポット溶接時に多くの熱量を必要とし、
その結果、リチウムの溶融が生じて内部短絡が発生しや
すくなる。そして、このものを前記のような溶接強度が
出るようにスポツト溶接するには、溶接条件として蓄勢
エネルギー30W.S、通電時間２ｍＳ、加圧力２kgの条件
が必要であり、２点スポツト溶接が好ましい。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0.6mm未
満では溶融によつて内部短絡が生じやすく、少なくとも
0.6mm、好ましくは0.65mm以上の厚さが必要である。In practice, it is desirable that the lead terminal (1) be bent and bent at 90 degrees and have a peel strength of 2 to 3 kg. For that purpose, it is easy to weld the lead body which becomes the lead terminal such as nickel wire. It is necessary to compress the tip part to be used for welding into a flat shape so that the flat part (1a) has a thickness of 0.2 to 0.4 mm. That is, if the thickness of the flat part (1a), which is the welded part of the lead terminal (1), is less than 0.2 mm, the strength required for the lead terminal (1) cannot be secured, and if it is more than 0.4 mm, it will be spot-welded. Requires a lot of heat,
As a result, melting of lithium occurs and an internal short circuit easily occurs. And in order to spot weld this product so that the above-mentioned welding strength can be obtained, as welding conditions, a stored energy of 30 W.S, energizing time of 2 mS, and pressing force of 2 kg are required. preferable. Under such welding conditions, if the thickness of the lithium negative electrode (7) is less than 0.6 mm, internal short circuit is likely to occur due to melting, and at least
A thickness of 0.6 mm, preferably 0.65 mm 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 circuit in the completed battery.
第６図に示すように、リチウム負極(7)の厚さが0.6mm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)をスポツト溶接することが可能とな
る。As shown in FIG. 6, when the thickness of the lithium negative electrode (7) is 0.6 mm or more, the occurrence of internal short circuit is prevented and the negative electrode terminal plate is directly connected.
It is possible to spot weld the lead terminal (1) to (2).
なお、本発明においてリード端子(2)、(11)としては例
えばニツケル線、ニツケルメツキまたは錫メツキした鉄
線あるいはステンレス鋼線などが用いられ、その直径は
0.7〜1.0mmが好ましく、スポット溶接に供される先端部
は前記のように0.2〜0.4mmの厚さにプレスして平坦状に
したものを用いることが必要である。In the present invention, as the lead terminals (2) and (11), for example, nickel wire, nickel-plated or tin-plated iron wire or stainless steel wire is used, and the diameter thereof is
0.7 to 1.0 mm is preferable, and it is necessary to use the tip end portion used for spot welding that is flattened by pressing to a thickness of 0.2 to 0.4 mm as described above.
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ウム電池の断面図であり、第３図
は本発明に係るリード端子付き扁平形リチウム電池の一
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ツ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、(11)……正極側のリード端子FIG. 1 is a perspective view showing a lead terminal, FIG. 2 is a sectional view of a flat lithium battery before attaching the lead terminal, and FIG. 3 shows an example of a flat lithium battery with lead terminals according to the present invention. FIG. 4 and 5 are sectional views schematically showing the behavior of the lithium negative electrode when the lead terminal is spot-welded to the negative electrode terminal plate, and FIG. 6 is the relationship between the thickness of the lithium negative electrode and the internal short circuit occurrence rate of the completed battery. FIG. (1) …… Negative electrode side lead terminal, (1a) …… Flat part, (2) …… Negative electrode terminal plate, (3) …… Positive electrode, (5) …… Positive electrode can, (7) …… Lithium Negative electrode, (11) ... Lead terminal on the positive electrode side
Claims (1)
ト溶接に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、リード端子の溶接点に対応す
る負極端子板内面に圧着したリチウム負極の厚みが0.6m
m以上であり、前記リード端子はニッケル、鉄またはス
テンレス鋼製で、前記リード端子の負極端子板に溶接さ
れる部分は平坦状であり、該平坦状部分の厚さが0.2〜
0.4mm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。1. A flat lithium battery with a lead terminal, wherein a lead terminal for taking out electricity is attached to a battery by spot welding. In a flat lithium battery with a lead terminal, the thickness of the lithium negative electrode crimped to the inner surface of the negative electrode terminal plate corresponding to the welding point of the lead terminal is 0.6 m
m or more, the lead terminal is made of nickel, iron or stainless steel, the portion of the lead terminal to be welded to the negative electrode terminal plate is flat, the thickness of the flat portion is 0.2 ~
Flat type lithium battery with lead terminal, which is 0.4mm.
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 JPS59169062A (en) | 1984-09-22 |
| JPH0644483B2 true 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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10501264B2 (en) | 2008-11-07 | 2019-12-10 | Advanced Custom Engineered Systems & Equipment Co. | Method and apparatus for monitoring waste removal and administration |
| US11727363B2 (en) | 2016-03-31 | 2023-08-15 | Advanced Custom Engineered Systems & Equipment Company | Systems and method for interrogating, publishing and analyzing information related to a waste hauling vehicle |
| US11907318B2 (en) | 2007-02-21 | 2024-02-20 | Advanced Custom Engineered Systems & Equipment Co. | Waste container monitoring system |
Family Cites Families (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 |
| JPS57138265U (en) * | 1981-02-24 | 1982-08-28 | ||
| JPS633091Y2 (en) * | 1981-02-20 | 1988-01-26 | ||
| JPS57136168A (en) * | 1981-02-18 | 1982-08-23 | Fujitec Co Ltd | Detecting method for moving distance of elevator |
| 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
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11907318B2 (en) | 2007-02-21 | 2024-02-20 | Advanced Custom Engineered Systems & Equipment Co. | Waste container monitoring system |
| US10501264B2 (en) | 2008-11-07 | 2019-12-10 | Advanced Custom Engineered Systems & Equipment Co. | Method and apparatus for monitoring waste removal and administration |
| US11267646B2 (en) | 2008-11-07 | 2022-03-08 | Advanced Custom Engineered Systems & Equipment Co. | Method and apparatus for monitoring waste removal and administration |
| US11286108B2 (en) | 2008-11-07 | 2022-03-29 | Advanced Custom Engineered Systems & Equipment Co. | Method and apparatus for monitoring waste removal and administration |
| US11767164B2 (en) | 2008-11-07 | 2023-09-26 | Advanced Custom Engineered Systems & Equipment Co. | Method and apparatus for monitoring waste removal and administration |
| US11727363B2 (en) | 2016-03-31 | 2023-08-15 | Advanced Custom Engineered Systems & Equipment Company | Systems and method for interrogating, publishing and analyzing information related to a waste hauling vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59169062A (en) | 1984-09-22 |
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