JPS634310B2 - - Google Patents
Info
- Publication number
- JPS634310B2 JPS634310B2 JP55094318A JP9431880A JPS634310B2 JP S634310 B2 JPS634310 B2 JP S634310B2 JP 55094318 A JP55094318 A JP 55094318A JP 9431880 A JP9431880 A JP 9431880A JP S634310 B2 JPS634310 B2 JP S634310B2
- Authority
- JP
- Japan
- Prior art keywords
- metal plate
- battery
- safety valve
- thin wall
- present
- 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
Links
- 239000002184 metal Substances 0.000 claims description 23
- 238000007789 sealing Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/375—Vent means sensitive to or responsive to temperature
-
- 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)
- Gas Exhaust Devices For Batteries (AREA)
Description
【発明の詳細な説明】
本発明は電池の安全弁装置に係り、特に電池温
度検知方式による新規な安全弁装置を提案するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a battery safety valve device, and particularly proposes a novel safety valve device using a battery temperature detection method.
従来より種々の安全弁装置が提案されている
が、それらは電池内のガス圧を検知して作動する
ものであつた。ところがこの方式においては特に
小型電池に取付ける場合、部品の小型化に伴つて
安全弁作動時のガス圧を正確に設定することが困
難となると共に安全弁は所定のガス圧によつて作
動するため弁孔より一気にガスが逃げることにな
り漏液を伴う懸念があつた。 Various safety valve devices have been proposed in the past, but they operate by detecting gas pressure within a battery. However, with this method, especially when attached to a small battery, it becomes difficult to accurately set the gas pressure when the safety valve is activated due to the miniaturization of components, and the safety valve operates with a predetermined gas pressure, so the valve hole There was a concern that the gas would escape more rapidly, resulting in leakage.
ところで、電池内のガス圧上昇の原因を考える
と、例えば電池内、外の短絡等により電池温度が
上昇し、その結果電解液が蒸発してガス圧が上昇
するものである。即ち、電池温度の上昇を因とし
てガス圧が上昇すると考えられる。従つて電池温
度を検知して安全弁を作動させる方式にすれば、
構造簡単にして安全弁作動時の設定を正確に行い
うると共にガス圧が低い状態で安全弁を作動しう
るため漏液を伴うガスの排出を阻止できるもので
ある。 By the way, considering the cause of the increase in gas pressure inside the battery, for example, the battery temperature increases due to a short circuit inside or outside the battery, and as a result, the electrolyte evaporates and the gas pressure increases. That is, it is considered that the gas pressure increases due to the increase in battery temperature. Therefore, if you use a method that detects the battery temperature and activates the safety valve,
The structure is simple, and settings for operating the safety valve can be made accurately, and since the safety valve can be operated in a state where the gas pressure is low, the discharge of gas accompanied by leakage can be prevented.
本発明は斯る点に着目してなされたものであ
り、以下図面に基づき説明する。第１図及び第２
図は本発明による安全弁装置を備えたボタン型電
池を示し、この電池は金属板を加工成形した封口
蓋１と外装缶２とにより電池容器が構成されてお
り、内部には電解液を含浸せるセパレータ３を介
して陰、陽極板４，５が配設されている。６は絶
縁パツキングである。 The present invention has been made with attention to this point, and will be explained below based on the drawings. Figures 1 and 2
The figure shows a button-type battery equipped with a safety valve device according to the present invention, in which a battery container is composed of a sealing lid 1 formed by processing and molding a metal plate and an outer can 2, and the inside is impregnated with an electrolyte. Negative and anode plates 4 and 5 are disposed with a separator 3 in between. 6 is an insulating packing.
而して、封口蓋１には部分的に環状溝を設けて
薄肉部１′が形成されていると共にこの薄肉部近
傍における封口蓋１を構成する金属板の外面には
この金属板と熱膨張係数が極端に異なる金属片７
が溶接等により固着８されている。 The sealing lid 1 is partially provided with an annular groove to form a thin wall portion 1', and the outer surface of the metal plate constituting the sealing lid 1 in the vicinity of this thin wall is exposed to thermal expansion of the metal plate. Metal piece 7 with extremely different coefficients
are fixed 8 by welding or the like.
好ましい実施例において、封口蓋１は17×10-6
cm／cm／℃の熱膨張係数をもつステンレスよりな
り、又金属片７は１×10-6cm／cm／℃の熱膨張係
数をもつアンバー（36％Ni 合金鋼）よりなる。 In a preferred embodiment, the sealing lid 1 has a diameter of 17×10 -6
It is made of stainless steel with a thermal expansion coefficient of cm/cm/°C, and the metal piece 7 is made of amber (36% Ni alloy steel) with a thermal expansion coefficient of 1×10 -6 cm/cm/°C.
本発明装置の作動を第３図を参照して詳述する
に、常時はイ図の状態にあるが例えば内部短絡等
により電池温度が上昇すると、金属片７と封口蓋
１を構成する金属板との熱膨張係数が極端に異な
るためロ図に示すように封口蓋１に比して金属片
７が上方に急激に湾曲し、その結果封口蓋１の薄
肉部１′が切断されて開封し、電池内の発生ガス
は大気中に逸散して電池の破壊は未然に防止され
る。 The operation of the device of the present invention will be described in detail with reference to FIG. 3. Although the device is normally in the state shown in FIG. Since the coefficient of thermal expansion is extremely different between the metal piece 7 and the sealing lid 1, as shown in FIG. , the gas generated within the battery is dissipated into the atmosphere, and destruction of the battery is prevented.
このように本発明装置は温度検知方式によるこ
とを特徴とし、前述せる一実施例の構造に限定さ
れることなく種々の形体が考えられる。 As described above, the device of the present invention is characterized by the temperature detection method, and various configurations are possible without being limited to the structure of the one embodiment described above.
即ち、１金属片を封口蓋の内面に固着しても良
いし、又外装缶に部分的に薄肉部を形成しこの薄
肉部近傍の外装缶の内面或いは外面に金属片を固
着しても良い。２封口蓋或いは外装缶に薄肉部を
形成するに際して実施例のように環状溝を設けて
形成する以外に第４図及び第５図に示すような形
状の溝を設けて薄肉部１″，１を形成しても良
い。３本発明装置は実施例で示したボタン型電池
に限ることなく筒型、角型電池にも適用しうる。 That is, one metal piece may be fixed to the inner surface of the sealing lid, or a thin wall portion may be formed partially on the outer can, and a metal piece may be fixed to the inner or outer surface of the outer can near this thin wall portion. . 2. When forming a thin wall part on a sealing lid or an outer can, in addition to forming an annular groove as in the embodiment, a groove having the shape as shown in FIGS. 4 and 5 is provided to form a thin wall part 1'', 1 3. The device of the present invention is not limited to the button-type batteries shown in the embodiments, but can also be applied to cylindrical and square batteries.
上述した如く、本発明装置は部分的に薄肉部を
形成した電池容器構成用金属板の外面或いは内面
に金属片を固着し、電池温度上昇に伴う上記金属
板と金属片との膨張差を利用して金属板の薄肉部
を切断するという温度検知方式であるため、従来
の所定ガス圧の上昇を検知するものに比して、安
全弁作動時の設定を正確に行いうると共にガス圧
が低い状態で安全弁を作動しうるためガスの排出
時に漏液を伴うといつた不都合を抑制することが
できるものでありその工業的価値は極めて大であ
る。 As described above, the device of the present invention fixes a metal piece to the outer or inner surface of a metal plate for forming a battery container, which has a partially thin walled portion, and utilizes the difference in expansion between the metal plate and the metal piece as the battery temperature rises. Since the temperature detection method uses a temperature detection method that cuts the thin part of the metal plate by cutting the thin part of the metal plate, it is possible to accurately set the safety valve when it is activated and to detect when the gas pressure is low compared to conventional methods that detect the increase in the predetermined gas pressure. Since the safety valve can be operated by the gas, it is possible to suppress inconveniences such as liquid leakage when discharging gas, and its industrial value is extremely large.
図面はいづれも本発明に係り、第１図及び第２
図は本発明装置を備えたボタン型電池の斜視図及
び断面図、第３図は本発明装置の作動を説明する
図、第４図及び第５図は他の実施例における本発
明装置のための薄肉部形成用の溝部形状を示す図
である。
１……封口蓋、１′，１″，１……薄肉部、２
……外装缶、３……セパレータ、４，５……陰、
陽極板、７……金属片。
The drawings are all related to the present invention and include Fig. 1 and Fig. 2.
The figures are a perspective view and a cross-sectional view of a button-type battery equipped with the device of the present invention, FIG. 3 is a diagram explaining the operation of the device of the present invention, and FIGS. 4 and 5 are views of the device of the present invention in other embodiments. It is a figure which shows the groove part shape for thin-walled part formation. 1...Sealing lid, 1', 1'', 1...Thin wall part, 2
...Outer can, 3...Separator, 4,5...Shade,
Anode plate, 7...metal piece.
Claims (1)
を形成し、該薄肉部近傍の前記金属板の外面或い
は内面に、前記金属板とは熱膨張係数の異なる金
属片を固着し、電池温度上昇に伴う前記金属板と
金属片との膨張差によつて前記金属板の薄肉部を
切断せしめることを特徴とする電池の安全弁装
置。1. A thin wall part is partially formed in a metal plate constituting a battery container, and a metal piece having a coefficient of thermal expansion different from that of the metal plate is fixed to the outer surface or inner surface of the metal plate near the thin wall part, so that the battery temperature can be adjusted. A safety valve device for a battery, characterized in that a thin portion of the metal plate is cut by the difference in expansion between the metal plate and the metal piece as the metal plate rises.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9431880A JPS5719967A (en) | 1980-07-09 | 1980-07-09 | Safety valve for battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9431880A JPS5719967A (en) | 1980-07-09 | 1980-07-09 | Safety valve for battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5719967A JPS5719967A (en) | 1982-02-02 |
| JPS634310B2 true JPS634310B2 (en) | 1988-01-28 |
Family
ID=14106921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9431880A Granted JPS5719967A (en) | 1980-07-09 | 1980-07-09 | Safety valve for battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5719967A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100428974B1 (en) * | 2001-11-08 | 2004-04-29 | 삼성에스디아이 주식회사 | Secondary battery applying safety device |
| DE102013208214A1 (en) * | 2013-05-06 | 2014-11-06 | Robert Bosch Gmbh | Bursting element and galvanic cell with bursting element |
| KR20180092444A (en) * | 2017-02-09 | 2018-08-20 | 주식회사 엘지화학 | A cylindrical type Li-ion secondary battery |
-
1980
- 1980-07-09 JP JP9431880A patent/JPS5719967A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5719967A (en) | 1982-02-02 |
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