JP2569037B2 - Sodium-sulfur battery system - Google Patents
Sodium-sulfur battery systemInfo
- Publication number
- JP2569037B2 JP2569037B2 JP62033337A JP3333787A JP2569037B2 JP 2569037 B2 JP2569037 B2 JP 2569037B2 JP 62033337 A JP62033337 A JP 62033337A JP 3333787 A JP3333787 A JP 3333787A JP 2569037 B2 JP2569037 B2 JP 2569037B2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- storage container
- removal device
- container
- reaction
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
- H01M10/39—Accumulators not provided for in groups H01M10/05-H01M10/34 working at high temperature
- H01M10/3909—Sodium-sulfur cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
-
- 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
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はNa−Ｓ電池の安全性向上に係り、特に、電力
貯蔵システムの環境安全に好適なNa−Ｓ電池システムに
関する。Description: TECHNICAL FIELD The present invention relates to improving the safety of Na-S batteries, and more particularly to a Na-S battery system suitable for environmental safety of a power storage system.
従来のNa−Ｓ電池システムでは、システムの安全性確
保を図るために、Na−Ｓ電池単体での安全性に重点が置
かれてきた。例えば、特開昭59-146170号公報では、固
体電解質破損時に全量のNaとＳとが反応しないように、
不活性ガス相を設けて、NaとＳとの反応量を抑制するも
のである。しかし、発明者らの基礎実験の結果、NaとＳ
の直接反応が電池容器内で終結しない可能性もある。そ
の場合には、電池容器外へNaやＳが放出されることにな
り、電池容器外の安全対策が必要となる。電池容器外を
考慮した安全対策には特開昭59-87778号公報があげられ
るが、これも発生する熱の処理に関するものであり、電
池外に放出される反応生成物に関するものはない。In the conventional Na-S battery system, the safety of the Na-S battery alone has been emphasized in order to ensure the safety of the system. For example, in JP-A-59-146170, so that the total amount of Na and S do not react when the solid electrolyte is damaged,
An inert gas phase is provided to suppress the reaction amount between Na and S. However, as a result of the inventors' basic experiments, Na and S
May not be terminated in the battery container. In that case, Na and S are released outside the battery container, and safety measures outside the battery container are required. JP-A-59-87778 discloses a safety measure in consideration of the outside of the battery container, but also relates to the treatment of generated heat, and does not relate to a reaction product released outside the battery.
上記従来技術は電池容器が破損した場合に、電池外に
放出される電池反応物質（Na,S）、および、反応生成物
質（Na2Sx等）について考慮されておらず、Na−Ｓ電池
システムの安全性および周囲環境に対する安全性の点で
問題があつた。The above prior art does not consider a battery reactant (Na, S) and a reaction product (Na 2 Sx, etc.) released out of the battery when the battery case is broken, and the Na-S battery system is not considered. There was a problem in terms of the safety of the equipment and the surrounding environment.
本発明の目的は、電池外に放出された反応物質と反応
生成物等を捕集することにより、Na−Ｓ電池システム内
の安全性を確保し、外部環境の安全性をも維持すること
にある。An object of the present invention is to secure the safety in a Na-S battery system and also maintain the safety of an external environment by collecting a reactant, a reaction product, and the like discharged out of the battery. is there.
上記目的は、電池破損に伴つて放出された反応物質と
反応生成物質を捕集することにより達成される。The above object is achieved by collecting a reactant and a reaction product released due to a battery break.
電池反応物質であるNaとＳは、98℃（Naの凝固点）以
下では固相となる。そこで、電池作動時300〜350℃で液
相であつたNaとＳが、電池破損に伴つて放出された時、
これらを捕集し98℃以下に冷却して固相として貯蔵す
る。反応生成物質中，多硫化ナトリウムについてはこの
反応物質と同様の処理をする。しかし、反応生成物質中
でも非凝縮性のガス（蒸気圧が高いの意）については、
蒸気やミストの形態で、吸着および化学反応により捕集
する。Na and S, which are battery reactants, are in a solid phase at 98 ° C. (freezing point of Na) or lower. Therefore, when Na and S, which were in the liquid phase at 300 to 350 ° C. during battery operation, were released due to battery breakage,
These are collected, cooled to 98 ° C. or lower, and stored as a solid phase. Among the reaction products, sodium polysulfide is treated in the same manner as this reaction product. However, for non-condensable gases (high vapor pressure) among the reaction products,
Collected by adsorption and chemical reaction in the form of vapor or mist.
以下、本発明の一実施例を第１図により説明する。Na
−Ｓ電池１を設置する収納容器２内は各電池ごとに気密
構造の仕切り板３を設けた。Na−Ｓ電池の充放電は350
℃に加熱し、Na,S,Na2Sxを液相にしてから実施する。こ
の状態で仮に固体電解質が破損してNa−Ｓ直接反応が発
生し、電池容器が破損すると、電池内のNa,S,Na2Sxが電
池容器を収納した気密な収納容器内に放出される。Hereinafter, an embodiment of the present invention will be described with reference to FIG. Na
Inside the storage container 2 in which the -S battery 1 is installed, a partition plate 3 having an airtight structure is provided for each battery. Na-S battery charge / discharge is 350
℃ heated to be carried from the Na, S, and Na 2 Sx in the liquid phase. In this state, if the solid electrolyte is damaged and a Na-S direct reaction occurs, and the battery container is damaged, Na, S, and Na 2 Sx in the battery are released into an airtight storage container containing the battery container. .
発明者らのNa−Ｓ直接反応の基礎実験の知見から、電
池破損時に発生する物質中にはNa,S,Na2Sxばかりでな
く、H2S，CS2，SO2,COSなどの非凝縮性ガス成分も含ま
れ、さらに、破損時には、数十kg/cm2の高い圧力が発生
することが明らかになつた。そこで、本発明では電池容
器破損時の発生圧力を利用して、収納容器上部に設けた
破砕板４を破砕し非凝縮性ガスおよびミストを排気ダク
ト５を通して排気する。排気された非凝縮性ガスやミス
トは吸着装置６で吸着除去し、さらに、残留ガスをスク
ラバ７で反応除去する。なお、吸着剤には活性炭を表面
処理して用いた。From the knowledge of the basic experiments of the direct reaction of Na-S by the inventors, the substances generated at the time of battery breakage include not only Na, S, Na 2 Sx, but also H 2 S, CS 2 , SO 2 , COS, etc. Condensable gas components were also included, and it was found that a high pressure of several tens of kg / cm 2 was generated at the time of breakage. Therefore, in the present invention, the crush plate 4 provided at the upper portion of the storage container is crushed by utilizing the pressure generated when the battery container is damaged, and the non-condensable gas and the mist are exhausted through the exhaust duct 5. The exhausted non-condensable gas and mist are adsorbed and removed by the adsorber 6, and the residual gas is reacted and removed by the scrubber 7. The adsorbent used was a surface-treated activated carbon.
次に、電池容器から流出した高温で液体状のNaやS,Na
2Sxは、収納容器内底部に貯まり、底部に設けた溶融板
８に達し、溶融板を溶融して貯蔵容器９に流入する。貯
蔵容器９は、Na,S,Na2Sxの中で最も低い融点を示すNaの
融点である98℃以下に冷却されており、注入した溶液は
固相となり容器内に貯蔵される。Next, high-temperature liquid Na or S, Na flowing out of the battery container
2 Sx is stored at the bottom of the storage container, reaches the melting plate 8 provided at the bottom, melts the melting plate, and flows into the storage container 9. The storage container 9 is cooled to 98 ° C. or lower, which is the melting point of Na having the lowest melting point among Na, S, and Na 2 Sx, and the injected solution becomes a solid phase and is stored in the container.
従つて、電池破損時に電池外に放出された反応物質お
よび反応生成物質はすべて貯蔵容器９、吸着装置６、ス
クラバ７で除去できる。また、破損電池の周囲に収納さ
れた電池は破損の影響を受けることなく、安全に運転を
継続できる。当然、Na−Ｓ電池システムの体系外である
周囲の環境に悪影響を及ぼすことはない。Therefore, all the reactants and reaction products released outside the battery when the battery is broken can be removed by the storage container 9, the adsorption device 6, and the scrubber 7. Also, the battery stored around the damaged battery can be safely operated without being affected by the damage. Naturally, there is no adverse effect on the surrounding environment outside the system of the Na-S battery system.
第２図は本発明の他の実施例である。本発明の実施例
のように個々の電池を独立に気密容器に入れることな
く、簡単な仕切板10で収納容器２内の空間を区切つたも
のである。電池破損が発生すると第１図と同様に反応物
質と反応生成物質とが、それぞれ貯蔵容器９と吸着装置
６、スクラバ７で除去される。11は収納容器と貯蔵容器
間の断熱材である。本実施例は電池破損時に停止可能な
小型システムに適している。FIG. 2 shows another embodiment of the present invention. In this embodiment, the space inside the storage container 2 is separated by a simple partition plate 10 without individually placing the batteries in an airtight container as in the embodiment of the present invention. When the battery is damaged, the reactant and the reaction product are removed by the storage container 9, the adsorption device 6, and the scrubber 7 as in FIG. 11 is a heat insulating material between the storage containers. This embodiment is suitable for a small system that can be stopped when the battery is damaged.
本発明によれば、Na−Ｓ電池容器破損時に電池外に放
出される電池反応物質および反応生成物質を除去できる
ので、他の健全電池に悪影響を及ぼすことなく稼動で
き、電池システム系外の環境の安全性を維持することが
できる。According to the present invention, a battery reactant and a reaction product released to the outside of the battery when the Na-S battery container is broken can be removed, so that the battery can operate without adversely affecting other healthy batteries, and the environment outside the battery system can be removed. Safety can be maintained.
第１図は本発明の一実施例であるNa−Ｓ電池システムの
系統図、第２図は本発明の変形例の系統図である。 １……Na−Ｓ電池、２……収納容器、３……仕切板。FIG. 1 is a system diagram of a Na-S battery system according to one embodiment of the present invention, and FIG. 2 is a system diagram of a modification of the present invention. 1 ... Na-S battery, 2 ... storage container, 3 ... partition plate.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山本 元 日立市森山町1168番地 株式会社日立製 作所エネルギー研究所内 (72)発明者 下屋敷 重広 日立市森山町1168番地 株式会社日立製 作所エネルギー研究所内 (56)参考文献 特開 昭58−137974（ＪＰ，Ａ) 特開 昭59−151777（ＪＰ，Ａ) 特開 昭57−101357（ＪＰ，Ａ) ──────────────────────────────────────────────────の Continuing from the front page (72) Inventor Moto Yamamoto, 1168 Moriyama-cho, Hitachi City Inside Hitachi, Ltd. Energy Laboratory (72) Inventor Shigehiro Shimoyashiki 1168, Moriyama-machi, Hitachi City Hitachi, Ltd. Energy (56) References JP-A-58-137974 (JP, A) JP-A-59-151777 (JP, A) JP-A-57-101357 (JP, A)
Claims (1)
体状の電池活物質及びその反応生成物を貯蔵する貯蔵容
器を、また、収納容器上部に気体・ミスト状の電池活物
質及びその反応生成物を除去する吸着除去装置と反応除
去装置を接続しており、かつ前記貯蔵容器と前記収納容
器との間に溶融板を、前記収納容器と前記吸着除去装
置、前記反応除去装置との間に破砕板を有しており、電
池が正常に充放電されている状態では収納容器の気密性
を維持しており、破損時には溶融板または破砕板が溶融
または破砕して収納容器が貯蔵容器または吸着除去装
置、反応除去装置と導通することを特徴とするナトリウ
ム−硫黄電池システム。1. A storage container for storing a liquid battery active material and its reaction product at the bottom of a storage container storing a battery container, and a gas / mist-like battery active material and its storage device at an upper portion of the storage container. An adsorption removal device and a reaction removal device for removing a reaction product are connected, and a molten plate is provided between the storage container and the storage container, the storage container and the adsorption removal device, and the reaction removal device. It has a crush plate in between, and maintains the airtightness of the storage container when the battery is normally charged and discharged, and when the battery breaks, the molten plate or crush plate melts or crushes and the storage container becomes a storage container. Alternatively, the sodium-sulfur battery system is electrically connected to an adsorption removal device and a reaction removal device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62033337A JP2569037B2 (en) | 1987-02-18 | 1987-02-18 | Sodium-sulfur battery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62033337A JP2569037B2 (en) | 1987-02-18 | 1987-02-18 | Sodium-sulfur battery system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63202865A JPS63202865A (en) | 1988-08-22 |
| JP2569037B2 true JP2569037B2 (en) | 1997-01-08 |
Family
ID=12383751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62033337A Expired - Lifetime JP2569037B2 (en) | 1987-02-18 | 1987-02-18 | Sodium-sulfur battery system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2569037B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998032186A1 (en) * | 1997-01-16 | 1998-07-23 | Hitachi, Ltd. | Sodium-sulfur battery module |
| TR201808399T4 (en) * | 2010-06-22 | 2018-07-23 | Basf Se | Improved technical apparatus for large-scale storage of electrical energy. |
| US8679668B2 (en) | 2010-06-22 | 2014-03-25 | Basf Se | Industrial apparatus for the large-scale storage of electric energy |
| US20130330634A1 (en) | 2012-06-11 | 2013-12-12 | Basf Se | Electrode unit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3040394A1 (en) * | 1980-10-25 | 1982-07-08 | Varta Batterie Ag, 3000 Hannover | ELECTROCHEMICAL SECONDARY CELL |
| JPS58137974A (en) * | 1982-02-12 | 1983-08-16 | Hitachi Ltd | Sodium-sulphur cell system |
| JPS59151777A (en) * | 1983-02-18 | 1984-08-30 | Hitachi Ltd | Sodium-sulfur battery system |
-
1987
- 1987-02-18 JP JP62033337A patent/JP2569037B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63202865A (en) | 1988-08-22 |
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