JPH07226232A - Non-aqueous electrolyte secondary battery and power source device - Google Patents
Non-aqueous electrolyte secondary battery and power source deviceInfo
- Publication number
- JPH07226232A JPH07226232A JP6017603A JP1760394A JPH07226232A JP H07226232 A JPH07226232 A JP H07226232A JP 6017603 A JP6017603 A JP 6017603A JP 1760394 A JP1760394 A JP 1760394A JP H07226232 A JPH07226232 A JP H07226232A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- container
- secondary battery
- aqueous electrolyte
- electrolyte secondary
- 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]
【産業上の利用分野】本発明は例えばリチウムイオン二
次電池を使用した電動車輌用電源装置に使用して好適な
非水電解液二次電池及び電源装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-aqueous electrolyte secondary battery and a power supply device suitable for use in a power supply device for an electric vehicle using a lithium ion secondary battery, for example.
【０００２】[0002]
【従来の技術】近年、電気自動車等の電動車輌で使用す
る高電圧、高エネルギー容量、高エネルギー密度の電池
が要求されている。この高エネルギー密度が達成出来る
電池として、リチウムあるいはリチウム合金を用いた非
水電解液二次電池であるリチウムイオン二次電池が提案
されている。2. Description of the Related Art In recent years, a battery having a high voltage, a high energy capacity and a high energy density used in an electric vehicle such as an electric vehicle has been required. As a battery that can achieve this high energy density, a lithium ion secondary battery, which is a non-aqueous electrolyte secondary battery using lithium or a lithium alloy, has been proposed.
【０００３】このリチウムイオン二次電池１は図３に示
す如く正極２としてアルミＡｌより成る集電体５の両面
にリチウムＬｉと遷移金属の複合酸化物例えばＬｉＣｏ
Ｏ2を正極活物質４として積層すると共に負極３として
銅Ｃｕ又はＮｉより成る集電体７の両面にリチウムＬｉ
をドープ、脱ドープ可能なカーボン例えばグラファイト
構造を有する炭素や難黒鉛化炭素材料等の炭素Ｃを負極
活物質６として積層したものである。As shown in FIG. 3, this lithium-ion secondary battery 1 has a positive electrode 2 and a current collector 5 made of aluminum Al on both sides of which is a composite oxide of lithium Li and a transition metal, such as LiCo.
O 2 was laminated as the positive electrode active material 4, and lithium Li was formed on both surfaces of the current collector 7 made of copper Cu or Ni as the negative electrode 3.
Is a layer in which carbon that can be doped or dedoped, for example, carbon having a graphite structure or carbon C such as a non-graphitizable carbon material is laminated as the negative electrode active material 6.
【０００４】このリチウム二次電池１は、この正極２例
えば５１枚及び負極３例えば５２枚をセパレータ８を介
して交互に重ね合わせ、この正極活物質４及び負極活物
質６間には有機電解液９を充填したもので、このリチウ
ムイオン二次電池の化学反応は化１に示す如くである。In this lithium secondary battery 1, 51 sheets of the positive electrode 2 and 52 sheets of the negative electrode 3, for example, are alternately stacked with a separator 8 in between, and an organic electrolyte solution is placed between the positive electrode active material 4 and the negative electrode active material 6. The chemical reaction of this lithium ion secondary battery is as shown in Chemical formula 1.
【０００５】[0005]
【化１】 [Chemical 1]
【０００６】このリチウムイオン二次電池１は正極２が
５１枚及び負極３が５２枚をセパレータ８を介して交互
に積層しその夫々の横方向の長さを略３００ｍｍとし縦
方向の長さを略１００ｍｍとし、之等正極２同志を接続
すると共に負極３同志を接続したとき例えば平均電圧
３．５Ｖ、５０Ａｈであった。In this lithium-ion secondary battery 1, 51 positive electrodes 2 and 52 negative electrodes 3 are alternately laminated with separators 8 interposed therebetween, and each has a horizontal length of about 300 mm and a vertical length. When the positive electrode 2 and the negative electrode 3 were connected to each other and the negative electrode 3 was connected to each other, the average voltage was 3.5 V and 50 Ah, for example.
【０００７】上述リチウムイオン二次電池１を電気自動
車等の電動車輌用の電源装置として使用するときには上
述リチウムイオン二次電池１を複数個例えば４個を直列
接続して同一の電池収納容器に収納して使用する如くし
ていた。When the lithium ion secondary battery 1 is used as a power supply device for an electric vehicle such as an electric vehicle, a plurality of lithium ion secondary batteries 1 such as four are connected in series and housed in the same battery container. I was using it.
【０００８】[0008]
【発明が解決しようとする課題】然しながら、係るリチ
ウムイオン二次電池１は非水電解液、例えば有機電解液
９を使用しているので、小容量のものでは不要である
が、電気自動車の電源に用いるような大容量のものには
衝突等により電池容器が破壊され引火、爆発のような事
故が起きないように相当の容器構造を採らなければなら
ないことになる。However, since the lithium ion secondary battery 1 uses a non-aqueous electrolytic solution, for example, an organic electrolytic solution 9, it is not necessary for a small-capacity one, but a power source for an electric vehicle. For large-capacity products such as those used in the above, it is necessary to adopt a considerable container structure so that the battery container is not destroyed by collision or the like, and accidents such as ignition and explosion do not occur.
【０００９】このリチウムイオン二次電池１は消火時に
水をかけることは好ましくないことも種々実験の結果判
明した。またこのリチウムイオン二次電池１を過充電し
たときも発熱を十分防止する必要がある。As a result of various experiments, it was found that it is not preferable to apply water to the lithium ion secondary battery 1 when extinguishing a fire. Further, it is necessary to sufficiently prevent heat generation even when the lithium ion secondary battery 1 is overcharged.
【００１０】本発明は斯る点に鑑み、上述の如き大容量
の非水電解液二次電池及び電源装置において安全上の不
都合を解消することを目的とする。In view of the above point, the present invention has an object to eliminate the safety inconvenience in the above-mentioned large capacity non-aqueous electrolyte secondary battery and power supply device.
【００１１】[0011]
【課題を解決するための手段】本発明非水電解液二次電
池は例えば図１に示す如く密閉型電池容器１０を用いた
非水電解液二次電池において、この密閉型電池容量１０
内に不活性気体１１を封入したものである。The non-aqueous electrolyte secondary battery of the present invention is, for example, a non-aqueous electrolyte secondary battery using a sealed battery container 10 as shown in FIG.
An inert gas 11 is sealed inside.
【００１２】本発明電源装置は例えば図２に示す如く、
単数又は複数の非水電解液二次電池１を電池収納容器２
０に収納するようにした電源装置において、この電池収
納容器２０内に非活性体２１を封入したものである。The power supply device of the present invention is, for example, as shown in FIG.
A single or a plurality of non-aqueous electrolyte secondary batteries 1 and a battery container 2
In the power supply device that is housed in 0, the inactive body 21 is enclosed in the battery housing container 20.
【００１３】本発明電源装置は例えば図２に示す如く、
単数又は複数の非水電解液二次電池１を電池収納容器２
０に収納するようにした電源装置において、この電池収
納容器２０に非活性体２１を導入するための導入路２２
と、この導入路２２を開閉する開閉弁２３と、この電池
収納容器２０内の雰囲気を検知する雰囲気センサー２
４，２５，２６とを設け、この雰囲気センサー２４，２
５，２６が異常を検知したとき、この開閉弁２３を開く
様にしたものである。The power supply device of the present invention is, for example, as shown in FIG.
A single or a plurality of non-aqueous electrolyte secondary batteries 1 and a battery container 2
In the power supply device that is stored in 0, the introduction path 22 for introducing the inactive body 21 into the battery storage container 20.
And an opening / closing valve 23 for opening and closing the introduction path 22, and an atmosphere sensor 2 for detecting the atmosphere in the battery container 20.
4, 25 and 26 are provided, and the atmosphere sensors 24 and 2
The on-off valve 23 is opened when the abnormality is detected by the valves 5 and 26.
【００１４】[0014]
【作用】本発明によれば非水電解液二次電池の密閉型電
池容器１０内に不活性気体１１を封入したので、この非
水電解液二次電池の発火を防止することができる。According to the present invention, since the inert gas 11 is enclosed in the sealed battery container 10 of the non-aqueous electrolyte secondary battery, ignition of the non-aqueous electrolyte secondary battery can be prevented.
【００１５】また本発明によれば非水電解液二次電池１
を収納する電池収納容器２０内に非活性体２１を封入し
たので、この非水電解液二次電池１が何等かの原因によ
り開裂したときは、この非水電解液二次電池１の雰囲気
は非活性体２１であるので全く発火は起こらない。Further, according to the present invention, the non-aqueous electrolyte secondary battery 1
Since the non-activator 21 is enclosed in the battery storage container 20 that stores therein, when the non-aqueous electrolyte secondary battery 1 is cleaved for some reason, the atmosphere of the non-aqueous electrolyte secondary battery 1 is Since it is the inactive body 21, no ignition occurs.
【００１６】また本発明によれば非水電解液二次電池１
を収納する電池収納容器２０内にこの電池収納容器２０
内の雰囲気が異常となったときに非活性体２１を導入す
るようにしたので、非水電解液二次電池の雰囲気は非活
性体２１である状態が保持され続けるので全く発火は起
こらない。Further, according to the present invention, the non-aqueous electrolyte secondary battery 1
The battery storage container 20 for storing the
Since the inactive body 21 is introduced when the atmosphere inside becomes abnormal, the state of the non-aqueous electrolyte secondary battery continues to be in the state of the inactive body 21, so that no ignition occurs.
【００１７】[0017]
【実施例】以下図面を参照して本発明非水電解液二次電
池及び電源装置の実施例につき説明しよう。先ず図１を
参照して本発明非水電解液二次電池の実施例としてリチ
ウムイオン二次電池に適用した例につき説明する。Embodiments of the non-aqueous electrolyte secondary battery and power supply device of the present invention will be described below with reference to the drawings. First, with reference to FIG. 1, an example applied to a lithium ion secondary battery as an example of the non-aqueous electrolyte secondary battery of the present invention will be described.
【００１８】図１において、１０は例えば厚さ３００μ
ｍのステンレス板より成る横方向の長さが略３００ｍ
ｍ、縦方向の長さが略１００ｍｍ、厚さが５０ｍｍの偏
平角型の単電池の密閉型電池容器を示す。本例において
は、この密閉型電池容器１０内に５１枚の正極２及び５
２枚の負極３をセパレータ８を介して交互に積層した積
層体を挿入する如くする。In FIG. 1, 10 is, for example, a thickness of 300 μm.
The horizontal length of the stainless steel plate is approximately 300m.
1 shows a flat battery container of a flat rectangular cell having a length of m, a length of approximately 100 mm, and a thickness of 50 mm. In this example, 51 sheets of positive electrodes 2 and 5 are placed in the sealed battery case 10.
A laminate in which two negative electrodes 3 are alternately laminated with a separator 8 is inserted.
【００１９】この正極２としては図３に示す如く例えば
略１００ｍｍ×３００ｍｍのアルミＡｌ箔より成る集電
体５の両面にリチウムＬｉと遷移金属の複合酸化物より
成るＬｉＣｏＯ2 を正極活物質４として被着したもので
ある。As the positive electrode 2, as shown in FIG. 3, for example, LiCoO 2 made of a composite oxide of lithium Li and a transition metal is used as a positive electrode active material 4 on both sides of a current collector 5 made of an aluminum Al foil of about 100 mm × 300 mm. It has been applied.
【００２０】また負極３としては例えば略１００ｍｍ×
３００ｍｍの銅Ｃｕ箔より成る集電体７の両面にリチウ
ムＬｉをドープ、脱ドープ可能なグラファイト構造を有
するカーボンＣを負極活性物６として被着したものであ
る。As the negative electrode 3, for example, about 100 mm ×
A negative electrode active material 6 was coated with carbon C having a graphite structure capable of being doped with lithium Li and dedoped, on both surfaces of a current collector 7 made of a Cu Cu foil of 300 mm.
【００２１】またセパレータ８としては例えば略１００
ｍｍ×３００ｍｍの微多孔性ポリエチレンフィルムを使
用する。この場合本例においては正極２、負極３及びセ
パレータ８の形状としては、セパレータ８の形状を最大
とし、正極２及び負極３の形状を順次小さくする如くす
る。The separator 8 is, for example, approximately 100.
A mm x 300 mm microporous polyethylene film is used. In this case, in this example, the shapes of the positive electrode 2, the negative electrode 3, and the separator 8 are the maximum shape of the separator 8 and the shapes of the positive electrode 2 and the negative electrode 3 are sequentially reduced.
【００２２】またこの密閉型電池容量１０内にプロピレ
ンカーボネート、ジエチルカーボネートの混合溶媒の中
にＬｉＰＦ6 を１モル／１の割合で溶解した有機電解液
９を注入し、この正極活物質４及び負極活物質６間にこ
の有機電解液９を充填する如くする。このリチウムイオ
ン二次電池１の化学反応は前述化１に示す如くである。Further, an organic electrolytic solution 9 in which LiPF 6 was dissolved at a ratio of 1 mol / 1 in a mixed solvent of propylene carbonate and diethyl carbonate was injected into the sealed battery capacity 10, and the positive electrode active material 4 and the negative electrode were prepared. The organic electrolyte 9 is filled between the active materials 6. The chemical reaction of this lithium-ion secondary battery 1 is as shown in Chemical Formula 1 above.
【００２３】本例においてはこの密閉型電池容器１０を
封止する直前に、この密閉型容器１０内に存する空気を
追い出して、ドライチッ素ガス、アルゴンガス等の不活
性ガスを置換し、その後封止する如くする。In this example, immediately before sealing the hermetically sealed battery container 10, the air present in the hermetically sealed container 10 is expelled to replace an inert gas such as dry nitrogen gas or argon gas, and then sealed. I will stop it.
【００２４】図１において、３０は正極２を互に接続し
て導出した正極の電極端子を示し、３１は負極３を互に
接続して導出した負極の電極端子を示す。また、３２ａ
はこの密閉型電池容器１０の内圧が高くなったときに、
この内部の気体を抜く安全弁である。In FIG. 1, reference numeral 30 indicates a positive electrode terminal led out by connecting the positive electrodes 2 to each other, and 31 indicates a negative electrode terminal led out by connecting the negative electrodes 3 to each other. Also, 32a
When the internal pressure of the sealed battery case 10 becomes high,
This is a safety valve that releases the gas inside.
【００２５】斯る本例のリチウムイオン二次電池１によ
れば例えば平均電圧３．５Ｖ、５０Ａｈである。また本
例によれば密閉型電池容器１０内に不活性ガスを封入し
ているので、このリチウムイオン二次電池の発火を防止
することが出来る。According to the lithium ion secondary battery 1 of this example, the average voltage is 3.5 V and 50 Ah, for example. Further, according to this example, since the inert gas is sealed in the sealed battery case 10, it is possible to prevent ignition of the lithium ion secondary battery.
【００２６】また図２Ａ及びＢを参照して本発明電源装
置の実施例につき説明する。図２例はリチウムイオン二
次電池１の組電池による電源装置である。図２におい
て、２０はポリエチレン製の組電池用の電池収納容器を
示し、この電池収納容器２０に上述図１に示す如きリチ
ウムイオン二次電池１を例えば４個、２ｍｍの間隔を空
けて収納する如くする。An embodiment of the power supply device of the present invention will be described with reference to FIGS. 2A and 2B. The example in FIG. 2 is a power supply device using an assembled battery of the lithium ion secondary battery 1. In FIG. 2, reference numeral 20 denotes a battery storage container for a battery pack made of polyethylene. In the battery storage container 20, for example, four lithium ion secondary batteries 1 as shown in FIG. 1 are stored at intervals of 2 mm. I will do it.
【００２７】この場合、各リチウムイオン二次電池１の
正極の電極端子３０をリード線で結線し、この電池収納
容器２０の上蓋２０ａに取付けられている正極の組電池
端子３０ａに接続する如くすると共にこの各リチウムイ
オン二次電池１の負極の電極端子３１をリード線で結線
し、この電池収納容器２０の上蓋２０ａに取付けられて
いる負極の組電池端子３１ａに接続する如くする。In this case, the positive electrode terminal 30 of each lithium ion secondary battery 1 is connected by a lead wire so as to be connected to the positive assembled battery terminal 30a attached to the upper lid 20a of the battery container 20. At the same time, the negative electrode terminal 31 of each lithium-ion secondary battery 1 is connected by a lead wire and connected to the negative assembled battery terminal 31a attached to the upper lid 20a of the battery housing 20.
【００２８】この場合この電池収納容器２０の密閉度を
例えば１０-1Torr程度とする。本例においては、この電
池収納容器２０内に存する空気を追い出して非活性体２
１を置換し、その後封止する如くする。In this case, the airtightness of the battery container 20 is set to, for example, about 10 -1 Torr. In this example, the air present in the battery container 20 is expelled to remove the inactive body 2.
Replace 1 and then seal.
【００２９】この非活性体２１としてはドライチッ素、
アルゴンガス等の不活性ガス、液体チッ素、ドライアイ
ス（炭酸ガス）等の冷却物質、消火剤、例えば無水塩化
カルシウム（ＣａＣｌ2 ）、無水塩化物を主成分とする
「ナトレックス」（日本ドライケミカル（株）製）及び
リチウムと化合し、リチウム塩を作る物質を使用する如
くする。As the inactive body 21, dry nitrogen,
Inert gas such as argon gas, liquid nitrogen, cooling substance such as dry ice (carbon dioxide), fire extinguishing agent such as anhydrous calcium chloride (CaCl 2 ), anhydrous chloride "Natrex" (Japan Dry Chemical Co., Ltd.) and a compound that combines with lithium to form a lithium salt are used.
【００３０】また本例においては、この電池収納容器２
０の上蓋２０ａに非活性体注入口３２を設け、この非活
性体注入口３２を導入路を構成するパイプ２２及び電磁
弁より成る開閉弁２３を介して非活性体供給源３３に接
続する如くする。In the present example, the battery container 2
The inactive body injection port 32 is provided in the upper lid 20a of 0, and this inactive body injection port 32 is connected to the inactive body supply source 33 via the pipe 22 and the opening / closing valve 23 composed of the solenoid valve which constitutes the introduction path. To do.
【００３１】また本例においては、この電池収納容器２
０内に、この電池収納容器２０内の温度を測定する温度
センサー２４を所定位置に配する。この温度センサー２
４を複数個所に配してもよい。この場合、この温度セン
サー２４が温度が異常に上昇したと判断したときには非
活性体２１の供給用の電磁弁２３を開とする如くする。Further, in this example, the battery container 2
A temperature sensor 24 for measuring the temperature inside the battery container 20 is placed in a predetermined position inside the zero. This temperature sensor 2
You may distribute 4 to multiple places. In this case, when the temperature sensor 24 determines that the temperature has risen abnormally, the electromagnetic valve 23 for supplying the inactive body 21 is opened.
【００３２】また、この電池収納容器２０内に、この電
池収納容器２０内の圧力を測定する圧力センサー２５を
所定位置に配する。この場合、この圧力センサー２５が
圧力が異常に上昇したと判断したときには、非活性体２
１の供給用の電磁弁２３を開とする如くする。Further, a pressure sensor 25 for measuring the pressure inside the battery container 20 is arranged at a predetermined position inside the battery container 20. In this case, when the pressure sensor 25 determines that the pressure has risen abnormally, the inactive body 2
The solenoid valve 23 for supplying 1 is opened.
【００３３】また本例においては、この組電池の正極及
び負極の組電池端子３０ａ及び３１ａ間の電圧を測定す
る電圧センサー２６を設ける。この電圧センサー２６
が、この電圧が異常に上昇したと判断したときには、こ
の非活性体２１の供給用の電磁弁２３を開とする如くす
る。In this example, a voltage sensor 26 for measuring the voltage between the positive and negative assembled battery terminals 30a and 31a of this assembled battery is provided. This voltage sensor 26
However, when it is determined that the voltage has risen abnormally, the electromagnetic valve 23 for supplying the inactive body 21 is opened.
【００３４】また本例においては、この電池収納容器２
０の所定位置に排出弁３４を設ける如くし、この排出弁
３４は電磁弁２３が開のとき同時に開くようにし、この
排出弁３４よりの排出量をこの電磁弁２３よりの流入量
より小とする如くする。この排出弁３４は単に孔を開閉
するようにしたものであっても良い。In the present example, the battery container 2
The discharge valve 34 is provided at a predetermined position of 0, and the discharge valve 34 is opened at the same time when the solenoid valve 23 is opened, and the discharge amount from the discharge valve 34 is smaller than the inflow amount from the solenoid valve 23. I will do it. The discharge valve 34 may simply open and close the hole.
【００３５】上述の具体的例としては電池収納容器２０
内にドライチッ素、アルゴンガス等の不活性ガスを０．
５ｋｇ／ｃｍ2 以下の圧力で封入すると共に非活性体供
給源３３にこのドライチッ素、アルゴンガス等の不活性
ガスをボンベに設ける如くする。As a specific example of the above, a battery container 20 is provided.
An inert gas such as dry nitrogen or argon gas is added to the inside of the container.
It is sealed at a pressure of 5 kg / cm 2 or less, and the inert gas source 33 is provided with an inert gas such as dry nitrogen or argon gas in a cylinder.
【００３６】この場合センサー２４，２５，２６により
異常が検出されたときにこの不活性ガスが供給されこの
不活性ガスにより空気を追い出す、如く作用するが、こ
のとき同時に液体チッ素、ドライアイス等の冷却物質が
放出されるようにしても良い。In this case, when an abnormality is detected by the sensors 24, 25 and 26, this inert gas is supplied and the air is expelled by this inert gas, but at the same time, liquid nitrogen, dry ice, etc. The cooling substance may be released.
【００３７】本例によれば、リチウムイオン二次電池１
を収納する電池収納容器２０内に非活性体２１を封入し
たので、このリチウムイオン二次電池１が何等かの原因
により開裂したときは、このリチウムイオン二次電池１
の雰囲気は非活性体２１であるので発火を防止すること
ができる。According to this example, the lithium ion secondary battery 1
Since the inactive body 21 is enclosed in the battery storage container 20 that stores therein, when the lithium ion secondary battery 1 is cleaved for some reason, the lithium ion secondary battery 1
Since the atmosphere of is a non-active body 21, it is possible to prevent ignition.
【００３８】また、このリチウムイオン二次電池１が内
部圧力の上昇により開裂したときは雰囲気の気体を吸収
するが、この雰囲気が不活性ガス等であり吸収しても発
火は起こらない。Further, when the lithium ion secondary battery 1 is cleaved due to an increase in internal pressure, it absorbs the gas in the atmosphere, but the atmosphere is an inert gas or the like and no ignition occurs even if it is absorbed.
【００３９】また本例によればこの電池収納容器２０内
の温度、圧力及び電圧が異常となったときに、電磁弁２
３を開いて、非活性体２１を導入するようにしたので、
リチウムイオン二次電池１の雰囲気は非活性体２１であ
る状態で保持され続けるので全く発火は起こらない。According to this embodiment, when the temperature, pressure and voltage inside the battery container 20 become abnormal, the solenoid valve 2
3 is opened and the non-activator 21 is introduced.
Since the atmosphere of the lithium-ion secondary battery 1 is continuously maintained in the state of the non-active body 21, no ignition occurs.
【００４０】従って本例によれば、例えば７０Ｗｈ／ｋ
ｇの高エネルギー密度のリチウムイオン二次電池であっ
ても、安全性良く電気自動車に使用することができる。Therefore, according to this example, for example, 70 Wh / k
Even a lithium ion secondary battery having a high energy density of g can be safely used in an electric vehicle.
【００４１】尚上述実施例においては本発明をリチウム
イオン二次電池及びこれを使用した電源装置に適用した
例につき述べたが、本発明を鉛酸、Ｎｉ−Ｃｄ，Ｎｉ−
ＭＨ二次電池等の非水電解液二次電池及びこれらを使用
した電源装置に適用できることは勿論である。In the above embodiments, the present invention is applied to a lithium ion secondary battery and a power supply device using the same. However, the present invention is applied to lead acid, Ni--Cd, Ni--.
Of course, it can be applied to non-aqueous electrolyte secondary batteries such as MH secondary batteries and power supply devices using these.
【００４２】また上述例では雰囲気センサーとして、温
度センサー２４、圧力センサー２５、電圧センサー２６
を設けたが、この雰囲気センサーとして加速度センサー
を設けるようにしても良い。この加速度センサーを設け
たときには、衝突等の激しい衝撃があったときを、この
加速度センサーで検知しボンベにつめられた不熱性発泡
ウレタン等で容器内を満たすことが発火防止有効であ
る。この場合加速度センサーとしては自動車用安全装置
であるエアバッグに用いられるものが使用できる。In the above example, the temperature sensor 24, the pressure sensor 25, and the voltage sensor 26 are used as the atmosphere sensor.
However, an acceleration sensor may be provided as the atmosphere sensor. When this acceleration sensor is provided, it is effective to prevent ignition by detecting a severe impact such as a collision and filling the inside of the container with the non-heated urethane foam filled in the cylinder by the acceleration sensor. In this case, as the acceleration sensor, one used for an airbag, which is a safety device for automobiles, can be used.
【００４３】また上述例では大容量の電池及び電源に本
発明を適用する旨述べたが、ポータブルな小容量の電池
及び電源にも適用でき、このときは、保護用の電気回路
が省略出来る利益がある。Further, in the above-mentioned example, it is described that the present invention is applied to a large-capacity battery and power source, but it can also be applied to a portable small-capacity battery and power source, and in this case, a protection electric circuit can be omitted. There is.
【００４４】また上述例では電池収納容器２０にリチウ
ムイオン二次電池１を４個収納した例につき述べたが、
この収納する電池の数は１つ又はそれ以上であっても良
い。また本発明は上述実施例に限ることなく本発明の要
旨を逸脱することなく、その他種々の構成が採り得るこ
とは勿論である。In the above-mentioned example, an example in which four lithium ion secondary batteries 1 are stored in the battery storage container 20 has been described.
The number of batteries to be stored may be one or more. Further, the present invention is not limited to the above-described embodiments, and needless to say, various other configurations can be adopted without departing from the gist of the present invention.
【００４５】[0045]
【発明の効果】本発明によれば非水電解液二次電池の密
閉型電池容器内に不活性気体を封入したので、この非水
電解液二次電池の発火を防止することができる利益があ
る。According to the present invention, since the inert gas is sealed in the sealed battery container of the non-aqueous electrolyte secondary battery, it is possible to prevent ignition of the non-aqueous electrolyte secondary battery. is there.
【００４６】また本発明によれば非水電解液二次電池を
収納する電池収納容器内に非活性体を封入したので、こ
の非水電解液二次電池が何らかの原因により開裂したと
きはこの非水電解液二次電池の雰囲気は非活性体である
ので発火は防止できる利益がある。Further, according to the present invention, since the non-active material is enclosed in the battery container for accommodating the non-aqueous electrolyte secondary battery, when the non-aqueous electrolyte secondary battery is cleaved for some reason, this Since the atmosphere of the water electrolyte secondary battery is an inactive body, there is an advantage that ignition can be prevented.
【００４７】また本発明によれば非水電解液二次電池を
収納する電池収納容器内にこの電池収納容器内の雰囲気
が異常となったときに非活性体を導入するようにしたの
で、この非水電解液二次電池の雰囲気は非活性体である
状態が保持され続けるので全く発火は起こらない利益が
ある。Further, according to the present invention, the non-active substance is introduced into the battery container for housing the non-aqueous electrolyte secondary battery when the atmosphere in the battery container becomes abnormal. Since the atmosphere of the non-aqueous electrolyte secondary battery continues to be kept in the inactive state, there is an advantage that no ignition occurs.
【図１】本発明非水電解液二次電池の実施例を示す断面
図である。FIG. 1 is a cross-sectional view showing an embodiment of a non-aqueous electrolyte secondary battery of the present invention.
【図２】本発明電源装置の実施例を示し、Ａは断面図、
Ｂは斜視図である。FIG. 2 shows an embodiment of the power supply device of the present invention, in which A is a sectional view,
B is a perspective view.
【図３】リチウムイオン二次電池の説明に供する線図で
ある。FIG. 3 is a diagram provided for explaining a lithium ion secondary battery.
１ リチウムイオン二次電池 ２ 正極 ３ 負極 ４．６ 活物質 ５，７ 集電体 ８ セパレータ ９ 電解液 １０ 密閉型電池容器 １１ 不活性ガス ２０ 電池収納容器 ２１ 非活性体 ２２ パイプ ２３ 開閉弁 ２４ 温度センサー ２５ 圧力センサー ２６ 電圧センサー ３０，３１ 電極端子 ３０ａ，３１ａ 組電池端子 ３２ 非活性体注入口 ３３ 非活性体供給源 1 Lithium Ion Secondary Battery 2 Positive Electrode 3 Negative Electrode 4.6 Active Material 5,7 Current Collector 8 Separator 9 Electrolyte 10 Sealed Battery Container 11 Inert Gas 20 Battery Storage Container 21 Inactive Body 22 Pipe 23 Open / Close Valve 24 Temperature Sensor 25 Pressure sensor 26 Voltage sensor 30,31 Electrode terminal 30a, 31a Battery assembly terminal 32 Inactive body injection port 33 Inactive body supply source
Claims (5)
電池において、前記密閉型電池容器内に不活性気体を封
入したことを特徴とする非水電解二次電池。1. A non-aqueous electrolyte secondary battery using a sealed battery container, wherein an inert gas is filled in the sealed battery container.
池収納容器に収納するようにした電源装置において、 前記電池収納容器内に非活性体を封入したことを特徴と
する電源装置。2. A power supply device in which one or more non-aqueous electrolyte secondary batteries are stored in a battery storage container, wherein a non-active body is sealed in the battery storage container.
池収納容器に収納するようにした電源装置において、 前記電池収納容器に、非活性体を導入するための導入路
と、 該導入路を開閉する開閉弁と、前記電池収納容器内の雰
囲気を検知する雰囲気センサーとを設け、前記雰囲気セ
ンサーが異常を検知したときに前記開閉弁を開く様にし
たことを特徴とする電源装置。3. A power supply device in which one or more non-aqueous electrolyte secondary batteries are housed in a battery container, and an introduction path for introducing an inactive substance into the battery container, and the introduction path. An on-off valve that opens and closes a passage, and an atmosphere sensor that detects an atmosphere in the battery storage container are provided, and the on-off valve is opened when the atmosphere sensor detects an abnormality.
雰囲気センサーは温度センサーであることを特徴とする
電源装置。4. The power supply device according to claim 3, wherein the atmosphere sensor is a temperature sensor.
雰囲気センサーは加速度センサーであることを特徴とす
る電源装置。5. The power supply device according to claim 3, wherein the atmosphere sensor is an acceleration sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01760394A JP3297772B2 (en) | 1994-02-14 | 1994-02-14 | Non-aqueous electrolyte secondary battery and power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01760394A JP3297772B2 (en) | 1994-02-14 | 1994-02-14 | Non-aqueous electrolyte secondary battery and power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07226232A true JPH07226232A (en) | 1995-08-22 |
| JP3297772B2 JP3297772B2 (en) | 2002-07-02 |
Family
ID=11948464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01760394A Expired - Fee Related JP3297772B2 (en) | 1994-02-14 | 1994-02-14 | Non-aqueous electrolyte secondary battery and power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3297772B2 (en) |
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1994
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| WO1999060652A1 (en) * | 1998-05-20 | 1999-11-25 | Osaka Gas Company Limited | Nonaqueous secondary cell and method for controlling the same |
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| CN103460471A (en) * | 2011-04-08 | 2013-12-18 | 戴姆勒股份公司 | Device and method for checking the leak-tightness of an electrochemical energy accumulator |
| JP2014512004A (en) * | 2011-04-08 | 2014-05-19 | ダイムラー・アクチェンゲゼルシャフト | Electrochemical energy accumulator leak test apparatus and method |
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