JPH09161754A - Gas discharge mechanism of battery - Google Patents
Gas discharge mechanism of batteryInfo
- Publication number
- JPH09161754A JPH09161754A JP7344575A JP34457595A JPH09161754A JP H09161754 A JPH09161754 A JP H09161754A JP 7344575 A JP7344575 A JP 7344575A JP 34457595 A JP34457595 A JP 34457595A JP H09161754 A JPH09161754 A JP H09161754A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- nozzle
- case
- wall
- fire extinguisher
- 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
-
- 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
【０００１】[0001]
【発明の属する技術分野】この発明は、電池のガス放出
機構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas discharge mechanism for a battery.
【０００２】[0002]
【従来の技術】従来、電池異常時の火災発生防止のため
に、例えば電池の周囲に加圧された消火ボンベを配置
し、温度が上昇したときに、消火剤が噴出するように構
成されるものがあった。しかし、このような構成では、
重量増加が大きく、かつ発火を防止する点で効果が薄
い。この対策として、特開昭５０ー４５３６には、図８
の（ａ）に示すような電池のガス放出機構が開示されて
いる。 ここでは、ケース５０内に電池５１が配置さ
れ、電池５１の周囲に消火剤Ｆが満たされており、さら
にケース５０には圧力弁５３が取り付けられている。電
池５１内部で急激な反応がおこり、ケース５０内にガス
が発生しガス圧が上昇すると、圧力弁５３が開きガスが
放出される。この時、ガスの流路になる部分の消火剤Ｆ
が、最初のガス放出の時に同時に放出される。2. Description of the Related Art Conventionally, in order to prevent a fire from occurring when a battery malfunctions, for example, a pressurized fire extinguishing cylinder is arranged around the battery, and a fire extinguishing agent is ejected when the temperature rises. There was something. However, in such a configuration,
It has a large weight increase and is less effective in preventing ignition. As a countermeasure against this, Japanese Patent Laid-Open No. 50-4536 discloses a method shown in FIG.
There is disclosed a gas releasing mechanism of a battery as shown in (a) of FIG. Here, a battery 51 is arranged in the case 50, the extinguishing agent F is filled around the battery 51, and a pressure valve 53 is attached to the case 50. When a rapid reaction occurs inside the battery 51, gas is generated in the case 50 and the gas pressure rises, the pressure valve 53 opens and the gas is released. At this time, the extinguishing agent F in the part that becomes the gas flow path
Are released simultaneously with the first outgassing.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の電池のガス放出機構では、図８の（ｂ）に示
すように、一部の消火剤が放出されて、一旦ガス流路５
４が形成されてしまうと、消火剤Ｆがまだ残っているに
もかかわらず、消火剤は放出されず、ガスのみが圧力弁
５３から放出される。そのため、有効な消火が行なわれ
ないまま、充填された多量の消火剤が無駄になるという
問題があった。したがって本発明は、上記従来の問題点
に鑑み、重量を増加することなく、消火剤を効率よく使
用して、高い発火防止効果を得られる電池のガス放出機
構を提供することを目的とする。However, in such a conventional gas discharge mechanism for a battery, as shown in FIG. 8B, a part of the fire extinguishing agent is discharged, and the gas passage 5 is temporarily discharged.
When 4 is formed, the extinguishing agent F is not released, but only the gas is released from the pressure valve 53, although the extinguishing agent F still remains. Therefore, there has been a problem that a large amount of filled fire extinguishing agent is wasted without effective fire extinguishing. Therefore, in view of the above conventional problems, it is an object of the present invention to provide a gas discharge mechanism for a battery, which can efficiently use a fire extinguisher without increasing the weight and obtain a high ignition prevention effect.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、ケース内に電極を備える電池のガス放出
機構であって、ケースの一つの壁に固定され、ケース内
に延びてガス流通路を形成するノズルと、このノズルの
入口端側から延びるとともに、少なくともノズルの側壁
と協同して、上記一つの壁と電極の間のスペースに消火
剤収納室を形成する柔軟膜隔壁と、ノズルの入口端およ
び出口端に設けられ、ケース内の圧力が所定値になると
開く第１および第２の圧力弁とを有し、ノズルの側壁に
は消火剤収納室とガス流通路を連通する孔が設けられ、
消火剤収納室に消化剤が充填されているものとした。上
記の柔軟膜隔壁の電極側には、隔壁おさえ板を当接させ
て配置することができる。そして、消化剤はノズルのガ
ス流通路にも充填することができ、あるいは、ノズルの
側壁の孔を高温で溶融する樹脂膜で覆うこともできる。In order to achieve the above object, the present invention provides a gas discharge mechanism for a battery having an electrode inside a case, which is fixed to one wall of the case and extends into the case. A nozzle that forms a gas flow passage, and a flexible membrane partition that extends from the inlet end side of the nozzle and that cooperates with at least the side wall of the nozzle to form an extinguishant storage chamber in the space between the one wall and the electrode. , First and second pressure valves provided at the inlet end and the outlet end of the nozzle and opening when the pressure in the case reaches a predetermined value. The extinguishant storage chamber and the gas flow passage are connected to the side wall of the nozzle. There is a hole to
It is assumed that the extinguishant storage room is filled with extinguishing agent. On the electrode side of the above-mentioned flexible membrane partition wall, a partition wall holding plate can be placed in contact with. The extinguishing agent can be filled in the gas flow passage of the nozzle, or the hole on the side wall of the nozzle can be covered with a resin film that melts at a high temperature.
【０００５】[0005]
【作用】ケース内のガス圧が上昇すると、ノズル両端の
第１、第２の圧力弁が開いてガスが放出される。このと
き、ガス流通路の断面積はケースの断面積よりも小さ
く、絞られているため、ケース内のガスの流速に比べノ
ズルのガス流通路でのガスの流速の方が大きくなる。そ
のため、ガス流通路でのガス圧はケース内および消火剤
収納室内より小さくなり、ノズルの孔の部分には圧力差
が生じる。この圧力差により、ノズルの孔から消火剤が
吸い出されて、ガスと混合され、持続的にガスと消火剤
が放出される。When the gas pressure in the case rises, the first and second pressure valves at both ends of the nozzle open to release the gas. At this time, since the cross-sectional area of the gas flow passage is smaller than the cross-sectional area of the case and is narrowed, the flow velocity of gas in the gas flow passage of the nozzle is larger than the flow velocity of gas in the case. Therefore, the gas pressure in the gas flow passage becomes smaller than that in the case and the extinguishant storage chamber, and a pressure difference occurs in the hole portion of the nozzle. Due to this pressure difference, the extinguishant is sucked out of the hole of the nozzle, mixed with the gas, and continuously released.
【０００６】[0006]
【発明の実施の形態】発明の実施の形態を実施例により
説明する。図１、図２、および図３は本発明の第１の実
施例の構成を示す図である。図１は全体の構成図であ
る。図２は外観図である。図３はガス放出機構部の一部
破断斜視図である。電池１は、４角形状のケース２内に
電極３を備える。ケースの上壁２ａには電極端子４が設
けられ、電極３と接続されている。そして、ケース２内
の電極の下側スペースＲにはガス放出機構１０が設けら
れている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to examples. 1, FIG. 2, and FIG. 3 are diagrams showing the configuration of the first embodiment of the present invention. FIG. 1 is an overall configuration diagram. FIG. 2 is an external view. FIG. 3 is a partially cutaway perspective view of the gas release mechanism. The battery 1 includes electrodes 3 in a case 2 having a rectangular shape. Electrode terminals 4 are provided on the upper wall 2a of the case and are connected to the electrodes 3. A gas release mechanism 10 is provided in the space R below the electrode in the case 2.
【０００７】ガス放出機構１０は、ケースの下壁２ｂの
中心に形成された穴にガス流通路１２を一致させて取り
付けられた円筒状のノズル１１を備えている。ノズル１
１は一端（出口端）が下壁２ｂに固定され、他端（入口
端）がケース２内を電極３方向へ延びている。ノズル１
１のガス流路部１２の断面積は、下壁２ｂの面積の１０
分の１以下に設定されている。ノズル１１の入口端およ
び出口端には各々第１の開裂弁１７、第２の開裂弁１８
が設けられ、ガス流路部１２を遮断している。なお、開
裂弁１８の外側には、開裂弁１８の外部からの損傷を防
止するため、防護ブリッジ１９ａを有する弁カバー１９
が取り付けられている。開裂弁１７および１８は発明の
第１の圧力弁および第２の圧力弁を構成する。The gas discharge mechanism 10 is provided with a cylindrical nozzle 11 mounted in a hole formed at the center of the lower wall 2b of the case so that the gas flow passage 12 is aligned with the hole. Nozzle 1
One end (outlet end) 1 is fixed to the lower wall 2b, and the other end (inlet end) 1 extends in the case 2 toward the electrode 3. Nozzle 1
The cross-sectional area of the gas flow passage portion 12 of 1 is 10 of the area of the lower wall 2b.
It is set to less than one-third. A first cleaving valve 17 and a second cleaving valve 18 are provided at the inlet end and the outlet end of the nozzle 11, respectively.
Is provided to block the gas flow path portion 12. A valve cover 19 having a protective bridge 19a is provided on the outside of the cleaving valve 18 in order to prevent damage from the outside of the cleaving valve 18.
Is attached. Cleavage valves 17 and 18 form the first pressure valve and the second pressure valve of the invention.
【０００８】ノズル１１の入口端側からケース２の側壁
付近まで放射状に延び、周縁部が下壁２ｂに固定される
袋状の柔軟膜隔壁２０が設けられている。柔軟膜隔壁２
０の上記ノズル入口端側への固定は、入口端の外周に形
成された段部１５とこの段部にはめられる固定リング１
６との間に挟まれて固定され、また、周縁部２０ｂの下
壁２ｂへの固定は接着によりなされている。これによ
り、柔軟膜隔壁２０、下壁２ｂならびにノズル１１の側
壁１３とで画成される消化剤収納室２１が、スペースＳ
内に形成される。A bag-shaped flexible membrane partition wall 20 is provided which extends radially from the inlet end side of the nozzle 11 to the vicinity of the side wall of the case 2 and whose peripheral edge is fixed to the lower wall 2b. Flexible membrane partition 2
0 is fixed to the nozzle inlet end side by a step portion 15 formed on the outer periphery of the inlet end and a fixing ring 1 fitted in this step portion.
It is sandwiched between and fixed to 6, and the peripheral wall 20b is fixed to the lower wall 2b by adhesion. As a result, the digestive agent storage chamber 21 defined by the flexible membrane partition wall 20, the lower wall 2b, and the side wall 13 of the nozzle 11 becomes the space S.
Formed within.
【０００９】ノズル１１の側壁１３には周方向に多数の
孔１４が形成され、ガス流路部１２と消化剤収納室２１
とが連通するようになっている。消化剤収納室２１には
粉末状の消火剤Ｆが満たされるとともに、第１、第２の
開裂弁１７、１８で閉ざされたノズルのガス流路部１２
にも消火剤Ｆが充填されている。A large number of holes 14 are formed in the side wall 13 of the nozzle 11 in the circumferential direction, and the gas passage 12 and the extinguishant storage chamber 21 are formed.
And communicate with each other. The extinguishant storage chamber 21 is filled with the powdered fire extinguishing agent F, and the gas flow path portion 12 of the nozzle closed by the first and second cleaving valves 17 and 18.
Is also filled with the extinguishing agent F.
【００１０】次に、電極間の短絡等によって発熱し、急
激な反応がおこってガスが発生した場合の、ガス放出機
構１０の作用について説明する。ケース２内のガス圧が
上昇すると、そのガス圧によって開裂弁１７および１８
が開き、まずガス流路部１２に満たされていた消火剤Ｆ
がガス噴出と同時に一度に放出される。Next, the operation of the gas releasing mechanism 10 when heat is generated due to a short circuit between electrodes and a rapid reaction occurs to generate gas will be described. When the gas pressure in the case 2 rises, the gas pressure causes the cleavage valves 17 and 18 to move.
The fire extinguishing agent F that had been filled in the gas flow passage 12 was opened.
Is released at the same time as the gas is ejected.
【００１１】ここで、図５に、開裂弁１７および１８が
開き、ガス流路部１２に満たされていた消火剤Ｆが放出
された後の、ケース２内およびガス流路部１２でのガス
圧とガス速度の関係を示す。ケース２のＡーＡ断面での
断面積をＳ１、ガス圧をＰ１、ガス速度をＶ１とし、ガ
ス流路部１２のＢーＢ断面での断面積をＳ２、ガス圧を
Ｐ２，ガス速度をＶ２とする。ガス密度をρとすると、
流体力学における連続の式より、流体密度と流速と断面
積の積は一定であるので、 ρ・Ｖ１・Ｓ１＝ρ・Ｖ２・Ｓ２ （１） と表せる。Here, in FIG. 5, the gas in the case 2 and in the gas flow passage portion 12 after the cleaving valves 17 and 18 are opened and the extinguishing agent F filled in the gas flow passage portion 12 is released. The relationship between pressure and gas velocity is shown. The cross-sectional area of the case 2 taken along the line A-A is S1, the gas pressure is P1, the gas velocity is V1, and the cross-sectional area of the gas flow path portion 12 along the line BB is S2, the gas pressure is P2, and the gas velocity is V2. If the gas density is ρ,
From the continuity equation in fluid dynamics, the product of the fluid density, the flow velocity, and the cross-sectional area is constant, so it can be expressed as ρ · V1 · S1 = ρ · V2 · S2 (1).
【００１２】ガス流をガス密度ρが一定である流体と考
えると、Ｖ２は、 Ｖ２＝（Ｓ１／Ｓ２）・Ｖ１ （２） となる。流体中の圧力と、流速および流体密度の関係を
示すベルヌーイの定理から、ガス密度ρ、ガス速度Ｖ
１、Ｖ２およびガス圧Ｐ１，Ｐ２の関係は （１／２）ρＶ１2 ＋Ｐ１＝（１／２）ρＶ２2 ＋Ｐ２ （３） と表せる。Considering the gas flow as a fluid having a constant gas density ρ, V2 is V2 = (S1 / S2) V1 (2) From Bernoulli's theorem, which shows the relationship between the pressure in the fluid, the flow velocity, and the fluid density, the gas density ρ and the gas velocity V
The relationship between 1, V2 and gas pressures P1, P2 can be expressed as (1/2) ρV1 2 + P1 = (1/2) ρV2 2 + P2 (3).
【００１３】ここで、ノズル１１の孔１４における圧力
差ΔＰを考える。消火剤収納室２１内にはケース内Ａー
Ａ断面と同じ圧力Ｐ１が加えられているので、 ΔＰ＝Ｐ２−Ｐ１ （４） と表せる。式（４）および式（３）から、 ΔＰ＝Ｐ２−Ｐ１＝（１／２）ρＶ２2 −（１／２）ρＶ１2 ＝（１／２）ρ（Ｖ２2 −Ｖ１2 ） （５） となる。式（２）において、Ｓ１はＳ２の１０倍以上の
面積なので、 Ｖ２2 ＞＞Ｖ１2 （６） とみなせる。式（５）および式（６）から、 ΔＰ＝Ｐ２−Ｐ１＝（１／２）ρＶ２2 （７） と表せる。したがって、ノズル１１の孔１４における圧
力差ΔＰにより、消火剤収納室２１内の消火剤Ｆが孔１
４から吸い出され、噴出するガスと消火剤Ｆが混合され
て、放出される。Now, consider the pressure difference ΔP in the hole 14 of the nozzle 11. Since the same pressure P1 as that of the AA cross section in the case is applied in the extinguishant storage chamber 21, it can be expressed as ΔP = P2-P1 (4). From equation (4) and equation (3), ΔP = P2-P1 = (1/2) ρV2 2 − (1/2) ρV1 2 = (1/2) ρ (V2 2 −V1 2 ) (5) Become. In the formula (2), since S1 is 10 times or more the area of S2, it can be regarded as V2 2 >> V1 2 (6). From equations (5) and (6), it can be expressed as ΔP = P2-P1 = (1/2) ρV2 2 (7). Therefore, the pressure difference ΔP in the hole 14 of the nozzle 11 causes the extinguishant F in the extinguishant storage chamber 21 to move to the hole 1
The gas extinguished from No. 4 and the jetted gas and the extinguishing agent F are mixed and released.
【００１４】本実施例は以上のように構成され、まず、
ノズル１１のガス流路部１２に満たされていた消火剤Ｆ
が最初のガス噴出と同時に放出されるので、ケース２外
部のノズル１１の周囲での発火が防止される。その後ノ
ズル１１の孔１４から吸い出された消火剤収納室２１の
消火剤Ｆがガスに混合されて放出され、ガス放出により
引き起こされる電池周囲での発火が持続的に防止され
る。したがって、消火剤が効率良く利用され、高い発火
防止効果が得られる。This embodiment is constructed as described above. First,
Extinguishing agent F filled in the gas passage 12 of the nozzle 11
Is emitted at the same time as the first gas ejection, so that ignition around the nozzle 11 outside the case 2 is prevented. After that, the extinguishant F in the extinguishant storage chamber 21 sucked out from the hole 14 of the nozzle 11 is mixed with the gas and released, so that the ignition around the battery caused by the gas release is continuously prevented. Therefore, the fire extinguishing agent is efficiently used, and a high ignition preventing effect is obtained.
【００１５】図５および図６は本発明の第２の実施例の
構成を示す図である。図５は全体の構成図である。図６
は分解斜視図である。電池１Ａは、円筒状のケース２５
内に電極２６を備える。ケースの右壁２５ａには電極端
子４が設けられ、電極２６と接続されている。ケースの
左壁２５ｂ側には、ノズル１１と消火剤Ｆを収納する消
火剤収納室３２を有するガス放出機構３０が設けられて
いる。前実施例と同様に、左壁２５ｂに固定されたノズ
ル１１の入口端および出口端には第１、第２の開裂弁１
７、１８が設けられ、またノズル１１の側壁１３には孔
１４が形成されている。そして、柔軟膜隔壁３１、左壁
２５ｂならびにノズル１１の側壁１３とで画成される消
化剤収納室３２が形成され、消化剤収納室３２およびガ
ス流路部１２に消火剤Ｆが充填されている。FIGS. 5 and 6 are views showing the configuration of the second embodiment of the present invention. FIG. 5 is an overall configuration diagram. FIG.
Is an exploded perspective view. The battery 1A has a cylindrical case 25.
An electrode 26 is provided inside. The electrode terminal 4 is provided on the right wall 25a of the case and is connected to the electrode 26. On the left wall 25b side of the case, a gas discharge mechanism 30 having a nozzle 11 and an extinguishant storage chamber 32 that stores the extinguishant F is provided. Similar to the previous embodiment, the first and second cleavage valves 1 are provided at the inlet end and the outlet end of the nozzle 11 fixed to the left wall 25b.
7, 18 are provided, and a hole 14 is formed in the side wall 13 of the nozzle 11. Then, the extinguishant storage chamber 32 defined by the flexible membrane partition wall 31, the left wall 25b and the side wall 13 of the nozzle 11 is formed, and the extinguishant storage chamber 32 and the gas flow path portion 12 are filled with the fire extinguishing agent F. There is.
【００１６】本実施例ではさらに、柔軟膜隔壁３１の電
極２６に面する側に当接するように、ドーナツ状の隔壁
おさえ板３３が配置されている。とくに図示しないが、
隔壁おさえ板３３がその当接位置から脱落しないよう、
隔壁おさえ板３３を保持する爪をケース２５の壁または
ノズル１１に設けることができ、あるいは、隔壁おさえ
板３３を柔軟膜隔壁３１に接着することもできる。その
他の構成は第１の実施例と同様である。In this embodiment, further, a doughnut-shaped partition wall holding plate 33 is arranged so as to contact the side of the flexible membrane partition wall 31 facing the electrode 26. Although not specifically shown,
In order not to drop the partition holding plate 33 from its abutting position,
The claws for holding the partition holding plate 33 can be provided on the wall of the case 25 or the nozzle 11, or the partition holding plate 33 can be adhered to the flexible membrane partition 31. Other configurations are the same as those of the first embodiment.
【００１７】この実施例においては、ケース２５内のガ
ス圧が上昇すると、前実施例と同様に、開裂弁１７およ
び１８が開き、まずガス流路部１２に満たされていた消
火剤Ｆがガス噴出と同時に一度に放出される。その後、
消火剤Ｆとガスが混合されて放出されるとき、本実施例
では、柔軟膜隔壁３１の電極側に配置された隔壁おさえ
板３３により、ケース２５内のガス圧が均一かつ有効に
柔軟膜隔壁３１に加わるので、消火剤Ｆはより速やかに
ガスと混合される。In this embodiment, when the gas pressure in the case 25 rises, as in the previous embodiment, the cleaving valves 17 and 18 are opened, and the extinguishing agent F filled in the gas passage portion 12 is first gas. It is released at the same time as the eruption. afterwards,
When the extinguishant F and the gas are mixed and released, in the present embodiment, the gas pressure inside the case 25 is made uniform and effectively by the partition wall retainer plate 33 arranged on the electrode side of the flexible film partition 31. As it joins 31, the extinguishant F is mixed with the gas more quickly.
【００１８】これにより、第１の実施例と同様の効果が
得られるとともに、さらに隔壁おさえ板３３を介して柔
軟膜隔壁３１に均一圧力が加わるので、ガスと消火剤Ｆ
の混合が効率よく行われ、発火防止効果がより向上す
る。同じく隔壁おさえ板３３により、電極に対してノズ
ルや柔軟膜隔壁が下方に位置し電極端子が上壁に設けら
れる縦置き型のみでなく、図５に示されるように、電極
端子４を横向きとし電極とノズルや柔軟膜隔壁が横方向
に並ぶ横置きで用いられる電池においても確実に安定し
て消火剤が供給されるという効果を有する。As a result, the same effect as that of the first embodiment can be obtained, and since uniform pressure is applied to the flexible membrane partition wall 31 via the partition wall holding plate 33, the gas and the fire extinguishing agent F
Are efficiently mixed, and the ignition prevention effect is further improved. Similarly, not only the vertical type in which the nozzle and the flexible membrane partition are located below the electrode and the electrode terminal is provided on the upper wall by the partition hold-down plate 33, the electrode terminal 4 is set horizontally as shown in FIG. It has an effect that the fire extinguishing agent can be reliably and stably supplied even in a battery in which the electrodes, the nozzles, and the flexible membrane partition wall are laterally arranged side by side.
【００１９】図７は本発明の第３の実施例を示すガス放
出機構部の拡大図である。ガス放出機構４０はノズル１
１と消火剤Ｆを収納する消火剤収納室２１とを有する。
第１の実施例と同様に、下壁２ｂに固定されたノズル１
１の入口端および出口端には第１、第２の開裂弁１７、
１８が設けられ、またノズルの側壁１３には孔１４が形
成されている。そして、柔軟膜隔壁２０、下壁２ｂなら
びにノズル１１の側壁１３とで画成される消化剤収納室
２１が形成され、消化剤収納室２１に消火剤Ｆが充填さ
れている。ここで本実施例では、ノズル１１の側壁１３
に形成された孔１４が１２０℃で溶融する樹脂膜４１で
覆われ、ガス流路部１２には、消火剤が封入されていな
い。その他の構成は第１の実施例と同じである。FIG. 7 is an enlarged view of a gas release mechanism portion showing a third embodiment of the present invention. The gas release mechanism 40 is the nozzle 1
1 and a fire extinguisher storage chamber 21 that stores the fire extinguishing agent F.
Similar to the first embodiment, the nozzle 1 fixed to the lower wall 2b
A first and a second cleaving valve 17 at the inlet and outlet ends of 1,
18 is provided and a hole 14 is formed in the sidewall 13 of the nozzle. The extinguishant storage chamber 21 defined by the flexible membrane partition wall 20, the lower wall 2b and the side wall 13 of the nozzle 11 is formed, and the extinguishant storage chamber 21 is filled with the extinguishant F. Here, in this embodiment, the side wall 13 of the nozzle 11 is
The hole 14 formed in the above is covered with the resin film 41 that melts at 120 ° C., and the gas flow path portion 12 is not filled with the fire extinguishing agent. Other configurations are the same as those of the first embodiment.
【００２０】この実施例では、ケース２内のガス圧が上
昇すると、開裂弁１７および１８が開き、ガスが放出さ
れる。ガスの発生量が少ない時は、ガス温度の低いガス
が放出されることが多く、樹脂膜４１は溶融しないの
で、消火剤Ｆは放出されない。また、ガスの発生量が多
く、ガス温度が１２０℃より高いガスが放出された時に
は、樹脂膜４１が溶融して、第１の実施例と同様の作用
により消火剤Ｆが消化剤収納室２１から吸い出され、ガ
スに混合されて放出される。In this embodiment, when the gas pressure in the case 2 rises, the cleaving valves 17 and 18 open and the gas is released. When the amount of generated gas is small, a gas having a low gas temperature is often released and the resin film 41 does not melt, so the fire extinguishing agent F is not released. Further, when a large amount of gas is generated and a gas whose gas temperature is higher than 120 ° C. is released, the resin film 41 is melted and the extinguishant F is removed from the extinguishant storage chamber 21 by the same action as in the first embodiment. It is sucked out of the room, mixed with gas and released.
【００２１】これにより、ガス温度が高い場合には、ノ
ズル１１の孔１４から吸い出された消火剤Ｆがガスに混
合されて放出され、ガス放出により引き起こされる電池
周囲での発火が持続的に防止される。また、ガス温度が
低く、発火を防止する必要が無い場合には、ガスのみが
放出され、無駄に消火剤が放出されることがない。As a result, when the gas temperature is high, the extinguishing agent F sucked out from the hole 14 of the nozzle 11 is mixed with the gas and is discharged, so that the ignition around the battery caused by the gas discharge is sustained. To be prevented. Further, when the gas temperature is low and it is not necessary to prevent ignition, only the gas is released and the fire extinguishing agent is not unnecessarily released.
【００２２】なお、柔軟膜隔壁を高温で溶融する材料を
用いて作り、かつ電極と接する様に配置すれば、電極が
高温状態になったときには、柔軟膜隔壁の当該高温箇所
の電極に接する部位が溶融して穴が形成される。これに
より、消化剤収納室の消火剤が効果的に電極の高温箇所
へ供給される。If the flexible membrane partition is made of a material that melts at a high temperature and is arranged so as to contact the electrode, a portion of the flexible membrane partition that contacts the electrode at the high temperature when the electrode is in a high temperature state. Melt to form holes. As a result, the extinguishant in the extinguishant storage chamber is effectively supplied to the high temperature portion of the electrode.
【００２３】[0023]
【発明の効果】以上のとおり、本発明は、第１および第
２の圧力弁を配してケース内の圧力が所定値になるとガ
スを放出するノズルを設けるとともに、ノズルの側壁と
協同して、消火剤収納室を形成する柔軟膜隔壁を設け、
ノズルの側壁に消火剤収納室とガス流通路を連通する孔
を形成したので、ガスが放出される際、ノズルの孔から
消火剤が吸い出される。これにより、重量を増加するこ
となく、持続的にガスと消火剤が放出され、消火剤が効
率よく利用されて高い発火防止効果が得られる。As described above, according to the present invention, the first and second pressure valves are arranged to discharge the gas when the pressure in the case reaches a predetermined value, and in cooperation with the side wall of the nozzle. , A flexible membrane partition forming an extinguishant storage chamber is provided,
Since the hole that connects the extinguishant storage chamber and the gas flow passage is formed on the side wall of the nozzle, the extinguishant is sucked out from the hole of the nozzle when the gas is discharged. As a result, the gas and the extinguishing agent are continuously released without increasing the weight, and the extinguishing agent is efficiently used to obtain a high ignition prevention effect.
【図１】本発明の第１の実施例を示す図である。FIG. 1 is a diagram showing a first embodiment of the present invention.
【図２】第１の実施例の外観図である。FIG. 2 is an external view of the first embodiment.
【図３】ガス放出機構部の一部破断斜視図である。FIG. 3 is a partially cutaway perspective view of a gas release mechanism.
【図４】ガス圧とガス速度の関係を示す図である。FIG. 4 is a diagram showing a relationship between gas pressure and gas velocity.
【図５】第２の実施例を示す図である。FIG. 5 is a diagram showing a second embodiment.
【図６】第２の実施例の分解斜視図である。FIG. 6 is an exploded perspective view of the second embodiment.
【図７】第３の実施例を示すガス放出機構部の部分拡大
図である。FIG. 7 is a partially enlarged view of a gas release mechanism portion showing a third embodiment.
【図８】従来例を示す図である。FIG. 8 is a diagram showing a conventional example.
１、１Ａ 電池 ２ ケース ２ｂ 下壁 ３、２６ 電極 ４ 電極端子 １０、３０、４０ ガス放出機構 １１ ノズル １２ ガス流路部 １３ 側壁 １４ 孔 １５ １６ 固定リング １７、１８ 開裂弁 １９ 弁カバー ２０、３１ 柔軟膜隔壁 ２１、３２ 消火剤収納室 ２５ ケース ２５ｂ 左壁 ３３ 隔壁おさえ板 ４１ 樹脂膜 Ｒ スペース Ｆ 消化剤 1, 1A Battery 2 Case 2b Lower wall 3, 26 Electrode 4 Electrode terminal 10, 30, 40 Gas release mechanism 11 Nozzle 12 Gas flow path part 13 Side wall 14 Hole 15 16 Fixing ring 17, 18 Cleavage valve 19 Valve cover 20, 31 Flexible membrane bulkhead 21, 32 Fire extinguishant storage room 25 Case 25b Left wall 33 Partition wall hold down plate 41 Resin membrane R Space F Extinguishing agent
Claims (4)
機構であって、前記ケースの一つの壁に固定され、ケー
ス内に延びてガス流通路を形成するノズルと、該ノズル
の入口端側から延びるとともに、少なくともノズルの側
壁と協同して、前記一つの壁と電極の間のスペースに消
火剤収納室を形成する柔軟膜隔壁と、前記ノズルの入口
端および出口端に設けられ、前記ケース内の圧力が所定
値になると開く第１および第２の圧力弁とを有し、前記
ノズルの側壁には前記消火剤収納室とガス流通路を連通
する孔が設けられ、前記消火剤収納室に消化剤が充填さ
れていることを特徴とする電池のガス放出機構。1. A gas discharge mechanism for a battery, comprising an electrode in a case, the nozzle being fixed to one wall of the case and extending into the case to form a gas flow passage, and an inlet end side of the nozzle. A flexible membrane partitioning wall extending from the nozzle and forming a fire extinguishing agent storage chamber in the space between the one wall and the electrode in cooperation with at least the side wall of the nozzle; and the case provided at the inlet end and the outlet end of the nozzle. A first pressure valve and a second pressure valve that open when the internal pressure reaches a predetermined value, and a side wall of the nozzle is provided with a hole that communicates with the extinguishant storage chamber and the gas flow passage. A gas discharge mechanism for a battery, characterized in that the extinguishing agent is filled in.
て隔壁おさえ板が配置されていることを特徴とする請求
項１記載の電池のガス放出機構。2. The gas releasing mechanism for a battery according to claim 1, wherein a partition wall retainer plate is arranged in contact with the electrode side of the flexible membrane partition wall.
填されていることを特徴とする請求項１または２記載の
電池のガス放出機構。3. The gas releasing mechanism for a battery according to claim 1, wherein the extinguishing agent is also filled in the gas flow passage of the nozzle.
る樹脂膜で覆われていることを特徴とする請求項１また
は２記載の電池のガス放出機構。4. The gas discharge mechanism for a battery according to claim 1, wherein the hole on the side wall of the nozzle is covered with a resin film that melts at a high temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34457595A JP3658825B2 (en) | 1995-12-05 | 1995-12-05 | Battery gas release mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34457595A JP3658825B2 (en) | 1995-12-05 | 1995-12-05 | Battery gas release mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09161754A true JPH09161754A (en) | 1997-06-20 |
| JP3658825B2 JP3658825B2 (en) | 2005-06-08 |
Family
ID=18370339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34457595A Expired - Lifetime JP3658825B2 (en) | 1995-12-05 | 1995-12-05 | Battery gas release mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3658825B2 (en) |
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|---|---|---|---|---|
| JP2009219257A (en) * | 2008-03-11 | 2009-09-24 | Panasonic Corp | Power supply apparatus and electronic apparatus using the same |
| JP2012221717A (en) * | 2011-04-08 | 2012-11-12 | Panasonic Corp | Battery module |
| US8309250B2 (en) | 2008-03-04 | 2012-11-13 | Panasonic Corporation | Battery having fire extinguishing element in mesh form |
| US20160043368A1 (en) * | 2014-08-11 | 2016-02-11 | Samsung Sdi Co., Ltd. | Secondary battery and battery module including secondary battery |
| CN109585723A (en) * | 2017-09-29 | 2019-04-05 | 郑州宇通客车股份有限公司 | Battery case, safety battery, battery modules, battery case and vehicle |
| CN110534670A (en) * | 2018-05-23 | 2019-12-03 | 大众汽车有限公司 | Battery pack and motor vehicle with extinguishing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8309250B2 (en) | 2008-03-04 | 2012-11-13 | Panasonic Corporation | Battery having fire extinguishing element in mesh form |
| JP2009219257A (en) * | 2008-03-11 | 2009-09-24 | Panasonic Corp | Power supply apparatus and electronic apparatus using the same |
| JP2012221717A (en) * | 2011-04-08 | 2012-11-12 | Panasonic Corp | Battery module |
| US20160043368A1 (en) * | 2014-08-11 | 2016-02-11 | Samsung Sdi Co., Ltd. | Secondary battery and battery module including secondary battery |
| CN109585723A (en) * | 2017-09-29 | 2019-04-05 | 郑州宇通客车股份有限公司 | Battery case, safety battery, battery modules, battery case and vehicle |
| CN110534670A (en) * | 2018-05-23 | 2019-12-03 | 大众汽车有限公司 | Battery pack and motor vehicle with extinguishing device |
| US11318849B2 (en) | 2018-05-23 | 2022-05-03 | Volkswagen Aktiengesellschaft | Battery with extinguishing device, and motor vehicle |
| JP2020056445A (en) * | 2018-10-01 | 2020-04-09 | 大日本印刷株式会社 | Valve structure, housing body having it, and power storage device with valve structure |
| WO2021210276A1 (en) | 2020-04-17 | 2021-10-21 | パナソニックＩｐマネジメント株式会社 | Cylindrical battery |
| WO2022080174A1 (en) * | 2020-10-14 | 2022-04-21 | 三洋電機株式会社 | Sealed battery |
| CN112952252A (en) * | 2021-01-28 | 2021-06-11 | 江苏塔菲尔动力系统有限公司 | Structure for preventing battery explosion, battery module and battery pack |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3658825B2 (en) | 2005-06-08 |
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