JPH0294369A - Sealed lead-acid battery - Google Patents
Sealed lead-acid batteryInfo
- Publication number
- JPH0294369A JPH0294369A JP63247140A JP24714088A JPH0294369A JP H0294369 A JPH0294369 A JP H0294369A JP 63247140 A JP63247140 A JP 63247140A JP 24714088 A JP24714088 A JP 24714088A JP H0294369 A JPH0294369 A JP H0294369A
- Authority
- JP
- Japan
- Prior art keywords
- active material
- pressure
- material weight
- positive
- 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.)
- Granted
Links
- 239000002253 acid Substances 0.000 title claims description 5
- 239000007773 negative electrode material Substances 0.000 claims abstract description 6
- 239000007774 positive electrode material Substances 0.000 claims abstract description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract description 16
- 229910001882 dioxygen Inorganic materials 0.000 abstract description 16
- 238000007600 charging Methods 0.000 abstract description 15
- 238000010521 absorption reaction Methods 0.000 abstract description 10
- 230000020169 heat generation Effects 0.000 abstract description 8
- 230000007423 decrease Effects 0.000 abstract description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 2
- 239000001257 hydrogen Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000011149 active material Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000220317 Rosa Species 0.000 description 1
- 238000010280 constant potential charging Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000011245 gel electrolyte Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229920005992 thermoplastic resin Polymers 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/34—Gastight accumulators
- H01M10/342—Gastight lead accumulators
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Secondary Cells (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は密閉形鉛蓄電池の充電時に生じる熱逸走の抑制
に関するものである。DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to the suppression of heat loss that occurs during charging of sealed lead acid batteries.
従来の技術
一般に、密閉形鉛蓄電池は、充電時に正極から発生する
酸素ガスを負極で吸収させることにより密閉化を保って
いる。そこで酸素ガスと負極との接触を起こし易くする
ために、電極間にか
ゲル状の電解質を用いるが、電解液を含浸させた多孔体
を用いるかしている。そして電池が大電流で充電された
場合など、ガス発生量が多くなったとき、排気するだめ
の安全弁が電池に備えられており、この安全弁は負極で
の酸素ガス吸収の反応性を上げるために、１００〜２０
０ｍｍＨｇ程度の高い圧力で作動するように作られてい
る。BACKGROUND ART In general, sealed lead-acid batteries are kept sealed by having the negative electrode absorb oxygen gas generated from the positive electrode during charging. Therefore, in order to facilitate contact between the oxygen gas and the negative electrode, a gel electrolyte is used between the electrodes, or a porous body impregnated with an electrolytic solution is used. The battery is equipped with a safety valve to exhaust gas when the amount of gas generated increases, such as when the battery is charged with a large current.This safety valve is designed to increase the reactivity of oxygen gas absorption at the negative electrode. , 100-20
It is designed to operate at high pressures of around 0mmHg.
また充電中に負極からの水素ガス発生を防ぐため、通常
、負極の放電容量は正極のそれに対し多くしている。Furthermore, in order to prevent hydrogen gas from being generated from the negative electrode during charging, the discharge capacity of the negative electrode is usually greater than that of the positive electrode.
発明が解決しようとする課題
この種電池は補水などの補守がいらず、無漏液という特
徴を活かし、停電時の非常用電源として普及している。Problems to be Solved by the Invention This type of battery does not require maintenance such as water replenishment, and takes advantage of its non-leakage characteristics, making it popular as an emergency power source during power outages.
そして電池を設置する場合、複数個の電池を密着し良状
態で並べ、あまり余裕空間のない収納箱内で使用される
ことが多くなってきておシ、電池は充電中に発熱するた
め熱放散が悪ければ電池の温度上昇を招く。通常、この
種電池の充電は定電圧充電で行われ、温度が上がると電
池の充電過電圧が低下するため、高温になるほど大きな
電流が流れることになる。When installing batteries, it is becoming more and more common for multiple batteries to be lined up close together in good condition and used in a storage box that does not have much free space. If it is bad, it will cause the temperature of the battery to rise. Normally, this type of battery is charged by constant voltage charging, and as the temperature rises, the charging overvoltage of the battery decreases, so the higher the temperature, the larger the current flows.
そして大きな電流が流れるため正極からの酸素ガス発生
量が多くなる一方、温度が高いことで負極でのガス吸収
能力が高まるので、酸素ガス吸収による負極の充電過電
圧の低下と発熱の増加が起こる。するとまたさらに大き
な電流が流れ、正極からの酸素ガス発生量が多くなり負
極での酸素ガス吸収による発熱がさらに大きくなるとい
うことを繰９返す。この電池の発熱と放熱のつりあいが
とれていれば電池温度が安定するが、蓄熱する方向にあ
ると電池温度はますます上昇し、熱逸走という現象が発
生する。熱逸走が発生すると、電槽は通常熱可塑性樹脂
で作られているため、高温と内圧上昇によシ変形が生じ
、また大きな電流が流れるため正極格子の伸びを促進さ
せ、あるいは水の電気分解による電解液の減少のため電
池性能を低下させる。Since a large current flows, the amount of oxygen gas generated from the positive electrode increases, and at the same time, the high temperature increases the gas absorption capacity of the negative electrode, resulting in a decrease in the charging overvoltage of the negative electrode and an increase in heat generation due to the absorption of oxygen gas. Then, a larger current flows again, the amount of oxygen gas generated from the positive electrode increases, and the heat generation due to absorption of oxygen gas at the negative electrode further increases, and this cycle is repeated. If the heat generation and heat radiation of the battery are balanced, the battery temperature will be stable, but if the battery is in the direction of accumulating heat, the battery temperature will rise even more, causing a phenomenon called thermal escape. When heat escape occurs, since the battery case is usually made of thermoplastic resin, the high temperature and internal pressure increase will cause deformation, and a large current will flow, promoting elongation of the positive electrode grid, or electrolysis of water. Decreases battery performance due to decrease in electrolyte.
本発明は、この熱逸走現象を抑制する手段を提供するこ
とを目的とする。An object of the present invention is to provide means for suppressing this thermal escape phenomenon.
課題を解決するための手段
本発明は上記の目的を達成するために、まず負極活物質
重量を正極活物質重量に対し０．５５〜０．７０として
負極板の放電容量を正極板より少なくシ、更に電池内の
圧力が大気圧から８０ｍｍＨｇ以内の圧力上昇で開弁す
る安全弁を備えたものである。Means for Solving the Problems In order to achieve the above object, the present invention first sets the weight of the negative electrode active material to 0.55 to 0.70 relative to the weight of the positive electrode active material so that the discharge capacity of the negative electrode plate is smaller than that of the positive electrode plate. The battery is further equipped with a safety valve that opens when the pressure inside the battery rises within 80 mmHg from atmospheric pressure.
作用
負極活物質重量を正極のそれよりも少なくすることで充
電時の負極の過電圧を上がり易くし、このようにするこ
とにより、負極での酸素ガス吸収による負極の充電過電
圧の低下でその過電圧の低下をおぎなうために多くの電
流が流れることを少なくする。一方負極の充電過電圧が
上がり易い分だけ、正極の充電過電圧かあ′１．！ｌｌ
ｌ上がらずにすむので酸素ガス発生が抑えられ、負極で
の酸素ガス吸収による負極の充電過電圧低下と発熱が抑
えられる。この効果は負極の活物質重量が正極のそれに
対し０．７０以下のところで表われ、その値が０．５５
よシも小さくなると正極板の充電不足を招くほか、負極
からの水素ガス発生量が多くなり好ましくない。しかし
、負極／正極の活物質重量比を０．５５〜０．７０の範
囲としても高温になる程大きな電流が流れ、正極からの
酸素ガス発生量が増加し、一方では負極での酸素ガス吸
収能力が増すので、負極の充電過電圧の低下を小さくす
ることは避けられない。そこで負極での酸素ガス吸収を
少なくするため、安全弁が開弁する圧力を低く抑えるこ
とでそれを可能とするものである。安全弁の開弁圧を低
くすることで負極での酸素ガス吸収による発熱を少なく
する効果は、開弁圧８０ｍｍＨｇ以下のところで顕著で
ある。以上の特徴を有することにより熱逸走現象を抑制
することができる。By making the weight of the negative electrode active material less than that of the positive electrode, it is easier to increase the overvoltage of the negative electrode during charging, and by doing so, the overvoltage of the negative electrode is reduced due to the decrease in the charging overvoltage of the negative electrode due to oxygen gas absorption at the negative electrode. Reduce the amount of current flowing to compensate for the drop. On the other hand, the charging overvoltage of the positive electrode increases by the amount that the charging overvoltage of the negative electrode tends to rise.'1. ! ll
1 does not have to rise, the generation of oxygen gas is suppressed, and the negative electrode charging overvoltage drop and heat generation due to the absorption of oxygen gas at the negative electrode are suppressed. This effect appears when the weight of the active material of the negative electrode is 0.70 or less compared to that of the positive electrode, and the value is 0.55.
If the diameter is too small, not only will the positive electrode plate become insufficiently charged, but also the amount of hydrogen gas generated from the negative electrode will increase, which is undesirable. However, even if the active material weight ratio of the negative electrode/positive electrode is in the range of 0.55 to 0.70, the higher the temperature, the larger the current flows, the more the amount of oxygen gas generated from the positive electrode increases, and the more oxygen gas is absorbed by the negative electrode. As the capacity increases, it is inevitable to reduce the drop in charging overvoltage of the negative electrode. Therefore, in order to reduce oxygen gas absorption at the negative electrode, this is made possible by keeping the pressure at which the safety valve opens low. The effect of reducing the heat generation due to oxygen gas absorption at the negative electrode by lowering the opening pressure of the safety valve is remarkable when the opening pressure is 80 mmHg or less. By having the above characteristics, it is possible to suppress the thermal escape phenomenon.
実施例 本発明の一実施例を説明する。Example An embodiment of the present invention will be described.
試験した電池は６ Ｖ 、 １０Ａｈの密閉形鉛蓄電池
で第１表に示した構成によるもので正極板の活物質重量
を一定とし、負極板の活物質重量を変え、且つ安全弁の
開弁圧を変えている。The tested battery was a 6 V, 10 Ah sealed lead-acid battery with the configuration shown in Table 1. The weight of the active material on the positive plate was constant, the weight of the active material on the negative plate was varied, and the opening pressure of the safety valve was varied. It's changing.
そして第１表に示した仕様毎に電池を８個直列に接続す
ると共に、電池の長側面を密着させて並べ試験に供した
。試験は６０℃の恒温槽中で充電々圧２．３Ｖセルで過
充電を行い、そのときの電池温度を測定した。この結果
を第１図に示す。Then, eight batteries were connected in series according to the specifications shown in Table 1, and the long sides of the batteries were placed in close contact with each other for testing. In the test, overcharging was performed using a cell with a charging pressure of 2.3 V in a constant temperature bath at 60° C., and the battery temperature at that time was measured. The results are shown in FIG.
第１図は、電池Ａ−Ｄのそれぞれのグループの電池が示
した温度範囲を表わしている。この図かられかるように
、本発明品以外の電池は電池温度が除々に上昇し、熱逸
走を起こしている。FIG. 1 represents the temperature range exhibited by the cells in each group of cells A-D. As can be seen from this figure, the battery temperature of the batteries other than the products of the present invention gradually rose, causing thermal loss.
この理由は前に記述したとおりである。The reason for this is as described above.
発明の効果
本発明により熱逸走を防止することで、過剰なガス発生
訃よび電池の発熱を抑制し、そしてその影響による電槽
変形を防止でき、また熱逸走の影響による格子腐食、電
解液の減少による電池の早期容量低下を防止することが
できる等信頼性の高い電池を提供することができる。Effects of the Invention By preventing heat escape according to the present invention, it is possible to suppress excessive gas generation and heat generation of the battery, prevent deformation of the battery case due to the influence, and also prevent grid corrosion and electrolyte It is possible to provide a highly reliable battery that can prevent early capacity reduction of the battery due to depletion.
第１図は過充電時の電池温度変化を示した特性図である
。
過充電時間（ｌ″Ｌ）FIG. 1 is a characteristic diagram showing battery temperature changes during overcharging. Overcharge time (l″L)
Claims (1)
７０とした極板群からなり、かつ電池内の圧力が大気圧
から８０ｍｍＨｇ以内の正の圧力上昇で開弁する安全弁
を備えたことを特徴とする密閉形鉛蓄電池。The weight of the negative electrode active material is 0.55 to 0.0% relative to the weight of the positive electrode active material.
A sealed lead-acid battery comprising a group of electrode plates having a diameter of 70 mm and a safety valve that opens when the pressure within the battery rises within 80 mmHg of positive pressure from atmospheric pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63247140A JPH0610991B2 (en) | 1988-09-30 | 1988-09-30 | Sealed lead acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63247140A JPH0610991B2 (en) | 1988-09-30 | 1988-09-30 | Sealed lead acid battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0294369A true JPH0294369A (en) | 1990-04-05 |
| JPH0610991B2 JPH0610991B2 (en) | 1994-02-09 |
Family
ID=17159027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63247140A Expired - Fee Related JPH0610991B2 (en) | 1988-09-30 | 1988-09-30 | Sealed lead acid battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0610991B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04296464A (en) * | 1991-03-26 | 1992-10-20 | Shin Kobe Electric Mach Co Ltd | Sealed-type lead-acid battery |
| JPH05144465A (en) * | 1991-11-18 | 1993-06-11 | Japan Storage Battery Co Ltd | Sealed type lead-acid battery |
| CN103199307A (en) * | 2013-03-08 | 2013-07-10 | 超威电源有限公司 | Container formation lead-acid battery technology |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57124866A (en) * | 1981-01-26 | 1982-08-03 | Matsushita Electric Ind Co Ltd | Closed type lead storage battery |
| JPS61188855A (en) * | 1985-02-15 | 1986-08-22 | Japan Storage Battery Co Ltd | Enclosed lead storage battery |
| JPS62165854A (en) * | 1986-01-16 | 1987-07-22 | Matsushita Electric Ind Co Ltd | Enclosed lead storage battery |
-
1988
- 1988-09-30 JP JP63247140A patent/JPH0610991B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57124866A (en) * | 1981-01-26 | 1982-08-03 | Matsushita Electric Ind Co Ltd | Closed type lead storage battery |
| JPS61188855A (en) * | 1985-02-15 | 1986-08-22 | Japan Storage Battery Co Ltd | Enclosed lead storage battery |
| JPS62165854A (en) * | 1986-01-16 | 1987-07-22 | Matsushita Electric Ind Co Ltd | Enclosed lead storage battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04296464A (en) * | 1991-03-26 | 1992-10-20 | Shin Kobe Electric Mach Co Ltd | Sealed-type lead-acid battery |
| JPH05144465A (en) * | 1991-11-18 | 1993-06-11 | Japan Storage Battery Co Ltd | Sealed type lead-acid battery |
| CN103199307A (en) * | 2013-03-08 | 2013-07-10 | 超威电源有限公司 | Container formation lead-acid battery technology |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0610991B2 (en) | 1994-02-09 |
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