JP2002313431A - Nonaqueous electrolyte secondary battery - Google Patents
Nonaqueous electrolyte secondary batteryInfo
- Publication number
- JP2002313431A JP2002313431A JP2001112410A JP2001112410A JP2002313431A JP 2002313431 A JP2002313431 A JP 2002313431A JP 2001112410 A JP2001112410 A JP 2001112410A JP 2001112410 A JP2001112410 A JP 2001112410A JP 2002313431 A JP2002313431 A JP 2002313431A
- Authority
- JP
- Japan
- Prior art keywords
- negative electrode
- positive electrode
- power generator
- coating material
- temperature
- 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.)
- Withdrawn
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
-
- 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
- Secondary Cells (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、センサが設けられ
た非水電解質二次電池に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-aqueous electrolyte secondary battery provided with a sensor.
【0002】[0002]
【従来の技術】従来、電気自動車や据置用電源装置など
に用いられる二次電池として鉛蓄電池やアルカリ蓄電池
が用いられていた。しかし、近年では小型化、軽量化が
可能なリチウム電池等の非水電解質二次電池を大容量化
し、充放電を可能にしたものが用いられるようになって
きている。このような非水電解質二次電池は、正極及び
負極活物質が充填された正極及び負極電極がセパレータ
を介して巻回又は積層されて構成された発電体をパッケ
ージに封入することにより作られ、複数の発電体を直列
又は並列に接続することにより大容量化を可能にしてい
る。2. Description of the Related Art Conventionally, lead storage batteries and alkaline storage batteries have been used as secondary batteries used in electric vehicles and stationary power supply devices. However, in recent years, a non-aqueous electrolyte secondary battery such as a lithium battery, which can be reduced in size and weight, has been increased in capacity, and a battery capable of charging and discharging has been used. Such a non-aqueous electrolyte secondary battery is made by encapsulating a power generator formed by winding or laminating a positive electrode and a negative electrode filled with a positive electrode and a negative electrode active material via a separator, The capacity can be increased by connecting a plurality of power generators in series or in parallel.
【0003】一方、このような非水電解質二次電池は放
電時又は充電時に比較的高い発熱量を有し、その大きな
発熱によって電池内部温度が70℃を超えると電解質が
不安定となり、その二次電池の寿命を縮め、性能を極端
に劣化させることになる。また、このため70℃を超え
る高温が長く続くと電池自体を破損させてしまうおそれ
がある。そのために、発電体の温度を検出する温度セン
サをその二次電池に設け、その温度センサが所定値以上
の温度上昇を検出した時にこの二次電池を冷却させる冷
却機構や、温度上昇時に充放電を停止させる保護回路を
別途設けることが行われ、適切な対応ができるようにし
ている。On the other hand, such a non-aqueous electrolyte secondary battery has a relatively high calorific value during discharging or charging, and the electrolyte becomes unstable when the internal temperature of the battery exceeds 70 ° C. due to the large heat generation. The service life of the secondary battery is shortened, and the performance is extremely deteriorated. Further, if the high temperature exceeding 70 ° C. continues for a long time, the battery itself may be damaged. For this purpose, a temperature sensor for detecting the temperature of the power generator is provided on the secondary battery, and a cooling mechanism for cooling the secondary battery when the temperature sensor detects a temperature rise above a predetermined value, and a charge / discharge when the temperature rises. A separate protection circuit for stopping the operation is provided so that appropriate measures can be taken.
【0004】また、パッケージが金属からなる二次電池
にあっては、温度センサの代わりに圧力センサを設け、
過充電時の温度上昇とともに上昇したパッケージ内部の
圧力を検出し、その圧力センサが所定値を越える圧力上
昇を検出したときにパッケージに設けられた安全弁を開
弁するようにして、充電を停止させるようにしたものが
知られている。更に、二次電池の種類によっては、温度
センサと圧力センサの双方を設け、過充電時の発電体の
温度上昇とともに上昇したパッケージ内部の圧力をそれ
ぞれ検出し、それらの検出出力により充電を停止させる
ようにしたものも知られている。In a secondary battery having a metal package, a pressure sensor is provided instead of a temperature sensor.
Detects the pressure inside the package that has risen with the temperature rise at the time of overcharging, and stops charging by opening a safety valve provided on the package when the pressure sensor detects a pressure rise exceeding a predetermined value. Such is known. Further, depending on the type of the secondary battery, both a temperature sensor and a pressure sensor are provided to detect the pressure inside the package that has risen with the rise in the temperature of the power generator during overcharge, and the charging is stopped based on the detected output. Some of them are also known.
【0005】[0005]
【発明が解決しようとする課題】しかし、上記のような
温度センサや圧力センサを二次電池に設けても、それら
のセンサが二次電池におけるパッケージに取付けられた
ものである場合には発電体における正確な温度上昇又は
圧力を検出できない不具合がある。この点を解消するた
めに、発電体の外表面に温度センサや圧力センサを粘着
性を有する膜体を介して直接設けることも提案されてい
る(特開平11−162527)。しかし、膜体を介し
て温度センサや圧力センサを設けることは、その膜体と
いう新たな部品を必要とし、部品点数の増加をきたいし
てその管理負担を増加させる不具合がある。また、発電
体が比較的速い速度で温度又は圧力が上昇した場合に
は、発電体の外表面における温度や圧力を検出しても、
その検出値は発電体内部における温度や圧力を示すこと
にはならず、発電体内部における温度上昇又は圧力の上
昇に伴う適切な処理が遅れ、発電体の性能を劣化させる
不具合もある。However, even if the temperature sensor and the pressure sensor as described above are provided in the secondary battery, if the sensors are mounted on a package of the secondary battery, the power generator There is a problem that an accurate temperature rise or pressure cannot be detected in the above. In order to solve this problem, it has been proposed to provide a temperature sensor or a pressure sensor directly on the outer surface of the power generator via an adhesive film (JP-A-11-162527). However, providing a temperature sensor or a pressure sensor via a film requires a new part called the film, and has a problem that the number of parts is increased and the management burden is increased. Also, when the temperature or pressure of the power generator increases at a relatively high speed, even if the temperature or pressure on the outer surface of the power generator is detected,
The detected value does not indicate the temperature or pressure inside the power generator, and there is a problem that appropriate processing accompanying the rise in temperature or pressure inside the power generator is delayed, thereby deteriorating the performance of the power generator.
【0006】一方、温度センサや圧力センサは温度検出
部や圧力検出部における検出値を出力するためのリード
線が接続され、発電体は正極電極と負極電極が積層又は
巻回されて構成されるため、それらの温度センサや圧力
センサを発電体内部にそのまま挿入すると、センサにお
けるリード線が正極又は負極電極に接続して短絡を生じ
させる不具合がある。また、温度センサや圧力センサの
存在に起因する不均一な凹凸により正極電極及び負極電
極の積層又は巻回が困難になり、不均一な凹凸が存在す
るにも係わらず積層又は巻回された正極電極又は負極電
極には局部的に応力が集中し、その応力に起因して発電
体が破損する問題点もある。本発明の目的は、正極電極
又は負極電極に負担をかけることなく発電体内部におけ
る温度上昇値又は圧力を迅速かつ正確に検出し得る非水
電解質二次電池を提供することにある。On the other hand, the temperature sensor and the pressure sensor are connected to a lead wire for outputting a detection value in the temperature detection unit and the pressure detection unit, and the power generator is formed by laminating or winding a positive electrode and a negative electrode. Therefore, if the temperature sensor and the pressure sensor are directly inserted into the power generator, there is a problem that a lead wire of the sensor is connected to the positive electrode or the negative electrode to cause a short circuit. In addition, the non-uniform unevenness due to the presence of the temperature sensor and the pressure sensor makes it difficult to stack or wind the positive electrode and the negative electrode, and the stacked or wound positive electrode despite the presence of uneven unevenness. There is also a problem that stress is locally concentrated on the electrode or the negative electrode, and the power generator is damaged due to the stress. An object of the present invention is to provide a nonaqueous electrolyte secondary battery capable of quickly and accurately detecting a temperature rise value or a pressure inside a power generator without imposing a load on a positive electrode or a negative electrode.
【0007】[0007]
【課題を解決するための手段】請求項1に係る発明は、
図1に示すように、セパレータ17を介して正極電極1
1と負極電極14が積層又は巻回されて構成された発電
体10と、温度検出部21aが被覆材23に被覆されて
構成され発電体10の温度を検出する温度センサ21
と、発電体10を温度センサ21とともに密封するパッ
ケージ31とを備えた非水電解質二次電池の改良であ
る。その特徴ある構成は、発電体10の積層又は巻回さ
れた正極電極11の間若しくは負極電極14の間又は正
極電極11及び負極電極14の間に温度検出部21aが
被覆材23に被覆された状態で設けられたところにあ
る。この請求項1に係る非水電解質二次電池では、温度
センサ21が発電体10の内部に設けられるので、その
センサ21が検出する温度上昇値はその発電体10にお
ける内部の正確な値となり、そのセンサ21は発電体1
0の内部における温度上昇値を正確に検出する。The invention according to claim 1 is
As shown in FIG. 1, the positive electrode 1
1 and a negative electrode 14, which are laminated or wound, and a temperature sensor 21 which is configured by covering a temperature detecting portion 21 a with a coating material 23 and detects the temperature of the power generator 10.
And a package 31 for hermetically sealing the power generator 10 together with the temperature sensor 21. The characteristic configuration is such that the temperature detecting portion 21 a is covered with the coating material 23 between the stacked or wound positive electrodes 11 or between the negative electrodes 14 or between the positive electrode 11 and the negative electrode 14 of the power generator 10. It is provided in a state. In the non-aqueous electrolyte secondary battery according to claim 1, the temperature sensor 21 is provided inside the power generator 10, so that the temperature rise value detected by the sensor 21 is an accurate value inside the power generator 10, The sensor 21 is the power generator 1
The temperature rise value inside 0 is accurately detected.
【0008】請求項2に係る発明は、セパレータ17を
介して正極電極11と負極電極14が積層又は巻回され
て構成された発電体10と、発電体10を密封するパッ
ケージ31と、圧力検出部22aが被覆材23に被覆さ
れて構成されパッケージ31内部の圧力を検出する圧力
センサ22とを備えた非水電解質二次電池の改良であ
る。その特徴ある構成は、発電体10の積層又は巻回さ
れた正極電極11の間若しくは負極電極14の間又は正
極電極11及び負極電極14の間に圧力検出部22aが
被覆材23に被覆された状態で設けられたところにあ
る。この請求項2に係る非水電解質二次電池では、圧力
センサ22が発電体10の内部に設けられるので、その
センサ22が検出する圧力値はその発電体10における
内部の正確な値となり、そのセンサ22は発電体10の
内部における圧力値を正確に検出する。According to the second aspect of the present invention, there is provided a power generator 10 formed by laminating or winding a positive electrode 11 and a negative electrode 14 with a separator 17 interposed therebetween, a package 31 for hermetically sealing the power generator 10, This is an improvement of the non-aqueous electrolyte secondary battery including the pressure sensor 22 configured to cover the portion 22a with the coating material 23 and detecting the pressure inside the package 31. The characteristic configuration is such that the pressure detecting portion 22 a is covered with the coating material 23 between the stacked or wound positive electrodes 11 or between the negative electrodes 14 or between the positive electrode 11 and the negative electrode 14 of the power generator 10. It is provided in a state. In the non-aqueous electrolyte secondary battery according to claim 2, since the pressure sensor 22 is provided inside the power generator 10, the pressure value detected by the sensor 22 is an accurate value inside the power generator 10, and The sensor 22 accurately detects the pressure value inside the power generator 10.
【0009】請求項3に係る発明は、セパレータ17を
介して正極電極11と負極電極14が積層又は巻回され
て構成された発電体10と、温度検出部21aが被覆材
23に被覆されて構成され発電体10の温度を検出する
温度センサ21と、発電体10を温度センサ21ととも
に密封するパッケージ31と、圧力検出部22aが被覆
材23に被覆されて構成され前記パッケージ31内部の
圧力を検出する圧力センサ22とを備えた非水電解質二
次電池の改良である。その特徴ある構成は、温度検出部
21a及び圧力検出部22aが単一の被覆材23に被覆
され、温度検出部21a及び圧力検出部22aが被覆材
23に被覆された状態で発電体10の積層又は巻回され
た正極電極11の間若しくは負極電極14の間又は正極
電極11及び負極電極14の間に設けられたところにあ
る。この請求項3に係る非水電解質二次電池では、温度
センサ21及び圧力センサ22が発電体10の内部に設
けられるので、そのセンサ21,22が検出する温度上
昇値及び圧力値はその発電体10における内部の正確な
値となり、そのセンサ21,22は発電体10の内部に
おける温度上昇値及び圧力値を正確に検出する。According to a third aspect of the present invention, the power generator 10 is configured by laminating or winding the positive electrode 11 and the negative electrode 14 with the separator 17 interposed therebetween, and the temperature detecting portion 21 a is coated with the coating material 23. A temperature sensor 21 configured to detect the temperature of the power generator 10, a package 31 that seals the power generator 10 together with the temperature sensor 21, and a pressure detector 22 a covered with a coating material 23. This is an improvement of the nonaqueous electrolyte secondary battery including the pressure sensor 22 for detecting. The characteristic configuration is that the temperature detecting section 21a and the pressure detecting section 22a are covered with a single covering material 23, and the temperature detecting section 21a and the pressure detecting section 22a are covered with the covering material 23. Alternatively, it is provided between the wound positive electrode 11 or the negative electrode 14 or between the positive electrode 11 and the negative electrode 14. In the nonaqueous electrolyte secondary battery according to the third aspect, since the temperature sensor 21 and the pressure sensor 22 are provided inside the power generator 10, the temperature rise value and the pressure value detected by the sensors 21 and 22 are determined by the power generator. The sensor 21 and 22 accurately detect the temperature rise value and the pressure value inside the power generator 10.
【0010】請求項4に係る発明は、請求項1ないし3
いずれかに係る発明であって、被覆材23が正極電極1
1及び負極電極14の幅方向と略同一の幅又は長さを有
する平板状又は平角棒状に形成され、被覆材23の幅又
は長さを正極電極11又は負極電極14の幅に合わせる
ようにして発電体10の積層又は巻回された正極電極1
1の間若しくは負極電極14の間又は正極電極11及び
負極電極14の間に被覆材23が設けられた非水電解質
二次電池である。この請求項4に係る非水電解質二次電
池では、被覆材23を設けて正極電極11及び負極電極
14を積層又は巻回しても、この被覆材23の存在によ
り正極電極11及び負極電極14の積層面又は巻回面に
不均一な凹凸が生じることはなく、正極電極11及び負
極電極14の積層又は巻回が困難になることはない。こ
のため、この被覆材23を設けた状態で積層又は巻回さ
れた正極電極11又は負極電極14に局部的な応力が生
じることはなく、局部的な応力に起因する発電体10の
破損を有効に防止する。[0010] The invention according to claim 4 is the invention according to claims 1 to 3.
The invention according to any one of the above, wherein the coating material 23 is the positive electrode 1
1 and a flat or rectangular rod having a width or length substantially the same as the width direction of the negative electrode 14 so that the width or length of the coating material 23 is adjusted to the width of the positive electrode 11 or the negative electrode 14. Laminated or wound positive electrode 1 of power generator 10
1 is a nonaqueous electrolyte secondary battery in which a coating material 23 is provided between the negative electrodes 14 or between the positive electrodes 11 and the negative electrodes 14. In the nonaqueous electrolyte secondary battery according to the fourth aspect, even if the coating material 23 is provided and the positive electrode 11 and the negative electrode 14 are laminated or wound, the presence of the coating material 23 Uneven unevenness does not occur on the lamination surface or the winding surface, and the lamination or winding of the positive electrode 11 and the negative electrode 14 does not become difficult. Therefore, no local stress is generated in the laminated or wound positive electrode 11 or negative electrode 14 with the covering material 23 provided, and the damage of the power generator 10 due to the local stress is effectively prevented. To prevent.
【0011】[0011]
【発明の実施の形態】次に本発明の実施の形態を図面に
基づいて詳しく説明する。図1及び図2に示すように、
この実施の形態における非水電解質二次電池はリチウム
イオンポリマー二次電池9であり、この二次電池9は、
発電体10と、その発電体10の温度を検出する温度セ
ンサ21と、その発電体10を前記温度センサ21とと
もに密封するパッケージ31と、そのパッケージ31内
部の圧力を検出する圧力センサ22とを備える。発電体
10は、正極電極11と負極電極14との間にセパレー
タ17を介装し、その正極電極11及び負極電極14を
積層したものである。正極電極11は正極集電体箔12
の表面に正極活物質13が塗布されたものであり、負極
電極14は負極集電体箔15の表面に負極活物質16が
塗布されたものである。また、セパレータ17は正極集
電体箔12に塗布形成された正極活物質13と負極集電
体箔15の表面に塗布形成された負極活物質16との間
に介装される。この発電体10は、放電容量を拡大する
ために帯状の負極集電体箔15が用いられ、その帯状の
負極集電体箔15は負極活物質16の表面にセパレータ
17を有した状態で折畳まれる。なお、この実施の形態
における負極集電体箔15はCu箔であり、負極活物質
16にはグラファイト系の活物質が使用される。Embodiments of the present invention will now be described in detail with reference to the drawings. As shown in FIGS. 1 and 2,
The non-aqueous electrolyte secondary battery in this embodiment is a lithium ion polymer secondary battery 9, which is
The power generator 10 includes a temperature sensor 21 that detects the temperature of the power generator 10, a package 31 that seals the power generator 10 with the temperature sensor 21, and a pressure sensor 22 that detects the pressure inside the package 31. . The power generator 10 has a structure in which a separator 17 is interposed between a positive electrode 11 and a negative electrode 14, and the positive electrode 11 and the negative electrode 14 are laminated. The positive electrode 11 is a positive electrode current collector foil 12
The negative electrode 14 is obtained by applying a negative electrode active material 16 to the surface of a negative electrode current collector foil 15. The separator 17 is interposed between the positive electrode active material 13 formed on the positive electrode current collector foil 12 and the negative electrode active material 16 formed on the surface of the negative electrode current collector foil 15. In the power generator 10, a strip-shaped negative electrode current collector foil 15 is used in order to increase the discharge capacity, and the strip-shaped negative electrode current collector foil 15 is folded with a separator 17 on the surface of the negative electrode active material 16. Be folded. The negative electrode current collector foil 15 in this embodiment is a Cu foil, and the negative electrode active material 16 is a graphite-based active material.
【0012】発電体10は、折畳まれた負極電極14の
折目を除くセパレータ17の間にそれぞれ折畳み面積に
相応した面積を有する複数の正極電極11が挟持され
る。挟持される正極電極11の正極活物質13の表面に
もセパレータ17が形成される、この実施の形態におけ
る正極集電体箔12はAl箔であり、正極活物質13に
は例えばLiCoO2が使用される。即ち、セパレータ
17を間に介装して正極電極11及び負極電極14が積
層され、この積層は熱圧着により行われる。具体的に
は、負極電極14に折目の間隔に相応する所定のピッチ
で複数の正極電極11を配置し、セパレータ17を介装
した状態で正極電極11及び負極電極14を熱圧着す
る。複数の正極電極11の負極電極14上への配置は、
図2に示すように複数の正極集電体箔12の一方の端部
12bがその帯状の負極集電体箔15の一方の端部15
bから突出し、帯状の負極集電体箔15の他方の端部1
5aが複数の正極集電体箔12の他方の端部12aから
突出するように、またそれぞれの正極電極11が負極電
極14の折目に相当する部分をあけて配置される。In the power generator 10, a plurality of positive electrodes 11 each having an area corresponding to the folded area are sandwiched between separators 17 excluding the folds of the folded negative electrode 14. The separator 17 is also formed on the surface of the cathode active material 13 of the sandwiched cathode electrode 11. The cathode current collector foil 12 in this embodiment is an Al foil, and the cathode active material 13 is, for example, LiCoO 2. Is done. That is, the positive electrode 11 and the negative electrode 14 are laminated with the separator 17 interposed therebetween, and the lamination is performed by thermocompression bonding. Specifically, a plurality of positive electrodes 11 are arranged on the negative electrode 14 at a predetermined pitch corresponding to the interval between the folds, and the positive electrode 11 and the negative electrode 14 are thermocompression bonded with the separator 17 interposed therebetween. The arrangement of the plurality of positive electrodes 11 on the negative electrode 14 is as follows.
As shown in FIG. 2, one end 12 b of the plurality of positive electrode current collector foils 12 is connected to one end 15 of the strip-shaped negative electrode current collector foil 15.
b, the other end 1 of the strip-shaped negative electrode current collector foil 15
5a are arranged so as to protrude from the other end portions 12a of the plurality of positive electrode current collector foils 12, and the respective positive electrode electrodes 11 are arranged with a portion corresponding to the fold of the negative electrode electrode 14.
【0013】図4に示すように、このように正極電極1
1が積層された負極電極14の折畳みは、正極電極11
が配置されていない負極電極14の折目を交互に折曲げ
ることにより行われる。このように折畳むと、図1に示
すように、このように折畳まれた負極電極14の折目を
除くセパレータ17の間には、それぞれ折畳み面積に相
応した面積を有する複数の正極電極11が挟持される。
そして、図2に示すように、複数の正極集電体箔12の
一方の端部12bは帯状の負極集電体箔15の一方の端
部15bから突出し、帯状の負極集電体箔15の他方の
端部15aは複数の正極集電体箔12の他方の端部12
aから突出した状態で積層される。As shown in FIG. 4, the positive electrode 1
1 is stacked on the negative electrode 14 so that the positive electrode 11
This is performed by alternately bending the folds of the negative electrode 14 where no is arranged. When folded in this way, as shown in FIG. 1, a plurality of positive electrodes 11 each having an area corresponding to the folded area are provided between the separators 17 excluding the folds of the negative electrode 14 thus folded. Is pinched.
As shown in FIG. 2, one end 12 b of the plurality of positive electrode current collector foils 12 protrudes from one end 15 b of the band-shaped negative electrode current collector foil 15, and The other end 15 a is the other end 12 of the plurality of positive electrode current collector foils 12.
are stacked in a state of protruding from a.
【0014】一方、温度センサ21は温度検出部21a
が被覆材23に被覆されて構成され、圧力センサ22は
圧力検出部22aが被覆材23に被覆されて構成され、
この温度検出部21a及び圧力検出部22aは単一の被
覆材23に被覆される。温度検出部21aは温度によっ
て電気特性の変化する素子、たとえば、温度が高くなる
と抵抗が小さくなるサーミスター素子等が使用できる。
圧力検出部22aにはひずみゲージまたは圧力により抵
抗が異なる半導体素子等が使用できる。温度検出部21
a及び圧力検出部22aは、これらが被覆材23により
被覆されて一体的に形成される温度センサ21及び圧力
センサ22の全体を薄くするために、薄いものが好まし
い。On the other hand, the temperature sensor 21 has a temperature detecting section 21a.
Is coated with a coating material 23, and the pressure sensor 22 is configured such that a pressure detection unit 22a is coated with the coating material 23,
The temperature detecting section 21a and the pressure detecting section 22a are covered with a single covering material 23. As the temperature detecting unit 21a, an element whose electric characteristics change according to the temperature, for example, a thermistor element whose resistance decreases as the temperature increases can be used.
For the pressure detection unit 22a, a strain gauge or a semiconductor element having a different resistance depending on the pressure can be used. Temperature detector 21
The pressure sensor a and the pressure detection unit 22a are preferably thin in order to make the temperature sensor 21 and the pressure sensor 22 integrally formed by being covered with the covering material 23 thin.
【0015】図5に示すように、温度検出部21a及び
圧力検出部22aのそれぞれの両側面には、リード線2
1b,21bの一端がそれぞれ電気的に接続される。こ
の実施の形態におけるリード線21b,22bは線間を
広くするために、先端部を外側に折曲して平行に配設さ
れる。温度検出部21aと圧力検出部22aとリード線
21bの一部を被覆する被覆材23は、互いに密着され
た3層の絶縁フィルム23a,23b,23cにより構
成される。3層の絶縁フィルム23a,23b,23c
は、十分な強度を有する可撓性の合成樹脂フィルムや、
弾性物質であるゴムからなるフィルムが用いられる。合
成樹脂としては、たとえば、難燃化ABS樹脂、ポリ4
フッ化エチレンに代表されるフッ素系樹脂、フェノール
樹脂、ポリエステル樹脂、ポリエチレン樹脂、ポリプロ
ピレン樹脂、ポリスチレン樹脂、エポキシ樹脂、ポリカ
ーボネート等が挙げられる。ゴムとしては、スチレンブ
タジエンゴム、アクリロニトリルブタジエンゴム、ブタ
ジエンゴム、イソプレンゴム、シリコンゴム、フッ素ゴ
ム、ウレタンゴム、アクリルゴム等が挙げられる。As shown in FIG. 5, lead wires 2 are provided on both side surfaces of the temperature detecting section 21a and the pressure detecting section 22a, respectively.
One end of each of 1b and 21b is electrically connected. The lead wires 21b and 22b in this embodiment are disposed in parallel with their tips bent outward in order to widen the distance between the wires. The coating material 23 that covers the temperature detection unit 21a, the pressure detection unit 22a, and a part of the lead wire 21b is formed of three layers of insulating films 23a, 23b, and 23c that are adhered to each other. Three layers of insulating films 23a, 23b, 23c
Is a flexible synthetic resin film with sufficient strength,
A film made of rubber, which is an elastic substance, is used. Examples of the synthetic resin include flame-retardant ABS resin and poly-4
Examples thereof include a fluorine resin represented by fluorinated ethylene, a phenol resin, a polyester resin, a polyethylene resin, a polypropylene resin, a polystyrene resin, an epoxy resin, and a polycarbonate. Examples of the rubber include styrene butadiene rubber, acrylonitrile butadiene rubber, butadiene rubber, isoprene rubber, silicon rubber, fluorine rubber, urethane rubber, and acrylic rubber.
【0016】絶縁フィルム23a,23b,23cには
難燃性又は自己消火性をもたらす物質を添加することが
好ましい。この添加物質としては、ヘキサプロモベンゼ
ン、ポリテトラフルオロエチレン、4フッ化エチレン、
エチレン共重合体、4フッ化エチレン−パーフルオロア
ルキルビニルエーテル共重合体、4フッ化エチレン−6
フッ化プロビレン共重合体を代表とするハロゲン化有機
物、ジメチルメチルホスホネート、レゾルシルフェニル
ホスフェートなどの燐酸エステル、或いは三酸化アンチ
モン、五酸化アンチモン、硼酸亜鉛、錫酸亜鉛などの無
機系難燃剤などが挙げられる。絶縁フィルム23a,2
3b,23cの厚さは、使用される合成樹脂等の種類に
よって最適値に調整されるが、中間の絶縁フィルム23
bは温度検出部21a及び圧力検出部22aの厚さより
厚く形成され、その中間の絶縁フィルム23bを両側か
ら挟持する絶縁フィルム23a、23cは、リード線2
1b,22bと正極及び負極電極11,14との絶縁性
を確保する必要があるため、20〜200μmの膜厚の
ものが好ましい。The insulating films 23a, 23b and 23c are preferably added with a substance which provides flame retardancy or self-extinguishing properties. Examples of the additive include hexabromobenzene, polytetrafluoroethylene, and tetrafluoroethylene.
Ethylene copolymer, tetrafluoroethylene-perfluoroalkylvinyl ether copolymer, tetrafluoroethylene-6
Organic halides such as fluorinated propylene copolymers, phosphoric esters such as dimethylmethylphosphonate and resoryl phenyl phosphate, or inorganic flame retardants such as antimony trioxide, antimony pentoxide, zinc borate, zinc stannate, etc. No. Insulating film 23a, 2
The thickness of each of 3b and 23c is adjusted to an optimum value according to the type of synthetic resin or the like to be used.
b is formed to be thicker than the thickness of the temperature detecting section 21a and the pressure detecting section 22a, and the insulating films 23a and 23c sandwiching the intermediate insulating film 23b from both sides are connected to the lead wires 2a.
Since it is necessary to ensure insulation between 1b, 22b and the positive and negative electrodes 11, 14, a film having a thickness of 20 to 200 μm is preferable.
【0017】中間の絶縁フィルム23bには、温度検出
部21aと圧力検出部22a及びそれらの両側面に接続
されたリード線21b,21bの一部の外形形状に相応
する切り欠き23dが形成され、この切り欠き23dに
温度検出部21aと圧力検出部22a及びリード線21
b,21bの一部が挿入された状態で、その中間の絶縁
フィルム23bの両側に一対の絶縁フィルム23a、2
3cが積層接着される。この積層接着は接着剤を用いて
行われるか、或いは熱圧着により行われ、この3層の絶
縁フィルム23a,23b,23cにより構成された被
覆材23は、それらが積層接着された状態で正極電極1
1及び負極電極14の幅方向と略同一の幅を有し、単一
の正極電極11と略同一の外形形状を有する平板状に形
成される。A notch 23d corresponding to the external shape of a part of the lead wires 21b, 21b connected to the temperature detecting portion 21a and the pressure detecting portion 22a and both side surfaces thereof is formed in the intermediate insulating film 23b. The notch 23d has a temperature detecting section 21a, a pressure detecting section 22a, and a lead wire 21a.
In the state where a part of b and 21b are inserted, a pair of insulating films 23a and
3c is laminated and bonded. This lamination is performed by using an adhesive or by thermocompression bonding. The coating material 23 composed of the three layers of insulating films 23a, 23b, and 23c is applied to the positive electrode in a state where they are laminated and bonded. 1
It has a width substantially the same as the width direction of the first and negative electrodes 14, and is formed in a flat plate shape having substantially the same outer shape as the single positive electrode 11.
【0018】図4に示すように、温度検出部21a及び
圧力検出部22aが被覆材23により被覆されて一体的
に形成される温度センサ21及び圧力センサ22は、被
覆材23の幅を負極電極14の幅に合わせるようにして
発電体10の積層された負極電極14の間に設けられ
る。ここで、被覆材23は正極電極11及び負極電極1
4の幅方向と略同一の幅を有しかつ単一の正極電極11
と略同一の外形形状を有する平板状に形成されているの
で、この温度センサ21及び圧力センサ22を設けて正
極電極11と負極電極14を積層しても、このセンサ2
1,22の存在により積層面に不均一な凹凸が生じるこ
とはなく、正極電極11及び負極電極14の積層が困難
になることはない。このため、温度センサ21及び圧力
センサ22を設けた状態で積層しても、その正極電極1
1又は負極電極14に局部的に応力が集中することはな
く、それに起因する発電体の破損は有効に防止される。As shown in FIG. 4, the temperature sensor 21 and the pressure sensor 22, which are integrally formed by covering the temperature detecting portion 21a and the pressure detecting portion 22a with the coating material 23, have the width of the coating material 23 set to the negative electrode. The power generator 10 is provided between the stacked negative electrodes 14 so as to match the width of the power generator 10. Here, the coating material 23 is composed of the positive electrode 11 and the negative electrode 1.
And a single positive electrode 11 having substantially the same width as the width direction
Even if the temperature sensor 21 and the pressure sensor 22 are provided and the positive electrode 11 and the negative electrode 14 are laminated, the sensor 2
Due to the presence of 1,2, uneven unevenness does not occur on the lamination surface, and the lamination of the positive electrode 11 and the negative electrode 14 does not become difficult. For this reason, even if the temperature sensor 21 and the pressure sensor 22 are provided in a stacked state, the positive electrode 1
There is no local concentration of stress on the first or negative electrode 14, and the resulting damage to the power generator is effectively prevented.
【0019】図2〜図4に示すように、その後複数の正
極集電体箔12の全ての一方の端部12bは積層され、
電極状の正極端子26の一端が複数の正極集電体箔12
の積層された全ての一方の端部12bの間に挿入され
る。そしてその挿入状態で挿入方向と交差する方向にか
しめられた複数のはとめ27により正極端子26の一端
が複数の正極集電体箔12の全ての一方の端部12bに
接続される。一方、複数の負極集電体箔15の全ての他
方の端部15aは積層され、電極状の負極端子28の一
端が複数の負極集電体箔15の積層された全ての他方の
端部15aの間に挿入される。そしてその挿入状態で挿
入方向と交差する方向にかしめられた複数のはとめ27
により負極端子28の一端が複数の負極集電体箔15の
全ての他方の端部15aに接続される。この実施の形態
における正極端子26及び負極端子28にはそれぞれ可
撓性を有するエキスパンデッドメタル又は穿孔された金
属電極が用いられる。As shown in FIGS. 2 to 4, all one end portions 12b of the plurality of positive electrode current collector foils 12 are laminated,
One end of the electrode-like positive electrode terminal 26 has a plurality of positive electrode current collector foils 12.
Is inserted between all of the one end portions 12b. In the inserted state, one end of the positive electrode terminal 26 is connected to one end 12 b of all the plurality of positive electrode current collector foils 12 by a plurality of staples 27 caulked in a direction intersecting the insertion direction. On the other hand, all the other ends 15a of the plurality of negative electrode current collector foils 15 are laminated, and one end of the electrode-like negative electrode terminal 28 is connected to all the other ends 15a of the plurality of negative electrode current collector foils 15 laminated. Inserted between. In the inserted state, a plurality of staples 27 caulked in a direction intersecting the insertion direction
Thereby, one end of the negative electrode terminal 28 is connected to all the other ends 15 a of the plurality of negative electrode current collector foils 15. A flexible expanded metal or a perforated metal electrode is used for each of the positive electrode terminal 26 and the negative electrode terminal 28 in this embodiment.
【0020】図1及び図2に示すように、このように内
部に温度センサ21と圧力センサ22が設けられた発電
体10はパッケージ31で密封される。この実施の形態
におけるパッケージ31は変性ポリプロピレンがラミネ
ートされたアルミニウム箔が用いられる。ラミネートさ
れた変性ポリプロピレンを対向させるようにして一対の
パッケージ31で発電体10を挟み、真空雰囲気中で重
ね合わされたパッケージ31の周囲を熱圧着することに
より変性ポリプロピレンが互いに熱融着して発電体10
はパッケージ31で密封される。As shown in FIGS. 1 and 2, the power generator 10 having the temperature sensor 21 and the pressure sensor 22 provided therein is hermetically sealed by a package 31. As the package 31 in this embodiment, an aluminum foil laminated with modified polypropylene is used. The power generator 10 is sandwiched between a pair of packages 31 so that the laminated modified polypropylenes are opposed to each other, and the periphery of the stacked packages 31 is thermocompression-bonded in a vacuum atmosphere so that the modified polypropylenes are thermally fused to each other to generate power. 10
Are sealed with a package 31.
【0021】密封の際、図2に示すように、一対のパッ
ケージ31は正極端子26の他端及び負極端子28の他
端がそれぞれそのパッケージ31の外部に表出するよう
にその正極端子26及び負極端子28を挟む。また、図
1に示すように、一対のパッケージ31は温度センサ2
1と圧力センサ22のそれぞれのリード線21b,22
bの他端がそれぞれそのパッケージ31の外部に表出す
るようにそのリード線21b,22bを挟む。そして、
その状態で一対のパッケージ31の周囲は熱圧着され、
発電体10がパッケージ26に密閉された二次電池9が
得られる。At the time of sealing, as shown in FIG. 2, the pair of packages 31 are connected to their positive terminals 26 and 26 such that the other end of the positive terminal 26 and the other end of the negative terminal 28 respectively appear outside the package 31. The negative terminal 28 is interposed. Further, as shown in FIG.
1 and the lead wires 21b and 22 of the pressure sensor 22, respectively.
The lead wires 21b and 22b are sandwiched so that the other end of b is exposed outside the package 31, respectively. And
In this state, the periphery of the pair of packages 31 is thermocompression-bonded,
The secondary battery 9 in which the power generator 10 is sealed in the package 26 is obtained.
【0022】このように構成されたリチウムイオンポリ
マー二次電池9では、パッケージ31から引出された正
極及び負極端子26,28の他端を電池の端子として使
用することにより所望の電気を得ることができる。ま
た、この二次電池9は放電時又は充電時に比較的高い発
熱量を有するが、温度センサ21及び圧力センサ22が
発電体10の積層された負極電極14の間に設けられた
ので、発電体10がパッケージ31で密着される際にそ
れらの温度センサ21及び圧力センサ22は、特開平1
1−162527で必要とされている粘着性を有する膜
体を用いることなく発電体10に自然に密着する。この
ため、それらのセンサ21,22は発電体内部における
温度上昇値及び圧力を迅速かつ正確に検出する。この結
果、その温度センサ21が所定値以上の温度上昇を検出
した時にこの二次電池9を冷却させる冷却機構や、その
圧力センサ22が内圧上昇を検出したときに充電を停止
させるようにする等の適切な対応により、二次電池9の
本来の安全性と信頼性を向上させることができる。In the lithium ion polymer secondary battery 9 thus configured, desired electricity can be obtained by using the other ends of the positive and negative terminals 26 and 28 drawn from the package 31 as terminals of the battery. it can. The secondary battery 9 has a relatively high calorific value when discharging or charging, but since the temperature sensor 21 and the pressure sensor 22 are provided between the stacked negative electrodes 14 of the power generator 10, the power generator When the package 10 is brought into close contact with the package 31, the temperature sensor 21 and the pressure sensor 22
It adheres naturally to the power generator 10 without using the adhesive film body required in 1-162527. Therefore, the sensors 21 and 22 quickly and accurately detect the temperature rise value and the pressure inside the power generator. As a result, a cooling mechanism that cools the secondary battery 9 when the temperature sensor 21 detects a temperature rise equal to or more than a predetermined value, and stops charging when the pressure sensor 22 detects an internal pressure rise. With the appropriate measures, the original safety and reliability of the secondary battery 9 can be improved.
【0023】なお、上述した実施の形態では、温度セン
サ21及び圧力センサ22の双方が設けられた二次電池
を示したが、二次電池は温度センサ21のみが設けられ
るものであっても良く、圧力センサ22のみが設けられ
るものであっても良い。また、上述した実施の形態で
は、温度センサ21及び圧力センサ22の双方が発電体
10の積層された負極電極14の間に設けられた例を示
したが、温度センサ21及び圧力センサ22のいずれか
一方又は双方を正極電極11の間に設けても良く、正極
電極11及び負極電極14の間に設けても良い。In the above-described embodiment, the secondary battery provided with both the temperature sensor 21 and the pressure sensor 22 is shown. However, the secondary battery may be provided with only the temperature sensor 21. , Only the pressure sensor 22 may be provided. Further, in the above-described embodiment, an example is shown in which both the temperature sensor 21 and the pressure sensor 22 are provided between the stacked negative electrodes 14 of the power generator 10. One or both of them may be provided between the positive electrode 11 and the positive electrode 11 and the negative electrode 14.
【0024】また、上述した実施の形態では、正極電極
11と負極電極14が積層された発電体10を用い、正
極電極11及び負極電極14の幅方向と略同一の幅を有
する平板状の被覆材23を示したが、図6に示すよう
に、発電体10は正極電極11と負極電極14が巻回さ
れたものであっても良く、被覆材23は正極電極11及
び負極電極14の幅方向と略同一の長さを有する平角棒
状に形成されたものであっても良い。平角棒状の被覆材
23を有する温度センサ21及び圧力センサ22のいず
れか一方又は双方を設けて正極電極11と負極電極14
を巻回しても、被覆材23は正極電極11及び負極電極
14の幅方向と略同一の長さを有するので、このセンサ
21,22の存在によりその巻回面に不均一な凹凸が生
じることはなく、正極電極11及び負極電極14の巻回
が困難になることはなく、正極電極11又は負極電極1
4に局部的に応力が集中することは回避される。Further, in the above-described embodiment, the power generator 10 in which the positive electrode 11 and the negative electrode 14 are laminated is used, and the flat cover having a width substantially equal to the width direction of the positive electrode 11 and the negative electrode 14 is used. Although the material 23 is shown, as shown in FIG. 6, the power generator 10 may be a material in which the positive electrode 11 and the negative electrode 14 are wound, and the coating material 23 is the width of the positive electrode 11 and the negative electrode 14. It may be formed in a rectangular bar shape having the same length as the direction. A positive electrode 11 and a negative electrode 14 are provided by providing one or both of a temperature sensor 21 and a pressure sensor 22 having a rectangular bar-shaped coating material 23.
Is wound, since the covering material 23 has substantially the same length as the width direction of the positive electrode 11 and the negative electrode 14, the presence of the sensors 21 and 22 may cause unevenness on the winding surface. There is no difficulty in winding the positive electrode 11 and the negative electrode 14, and the positive electrode 11 or the negative electrode 1
The local concentration of stress at 4 is avoided.
【0025】更に、上述した実施の形態では、三層の絶
縁フィルム23a,23b,23cを積層接着して構成
された被覆材23を用いて説明したが、被覆材23は温
度検出部21a及び圧力検出部22bのいずれか一方又
は双方を被覆可能であって、かつその外形形状が正極電
極11及び負極電極14の幅方向と略同一の幅又は長さ
を有する平板状又は平角棒状に形成されたものであれ
ば、温度検出部21aと圧力検出部22a及びそれらの
両側面に接続されたリード線21b,21bの一部を金
型に装着して合成樹脂又はゴムをその金型に圧縮成形又
は射出成形することにより温度検出部21a等が埋め込
まれた被覆材23を成形しても良い。但し、ゴムを圧縮
成形又は射出成形した後には熱をかけて加硫処理を行う
必要はある。Furthermore, in the above-described embodiment, the description has been made using the covering material 23 formed by laminating and bonding the three layers of insulating films 23a, 23b, and 23c. One or both of the detection portions 22b can be covered, and the outer shape is formed in a flat plate shape or a rectangular rod shape having substantially the same width or length as the width direction of the positive electrode 11 and the negative electrode 14. If it is, the temperature detecting unit 21a, the pressure detecting unit 22a and a part of the lead wires 21b, 21b connected to both side surfaces thereof are mounted on a mold, and a synthetic resin or rubber is compression-molded or molded into the mold. The coating material 23 in which the temperature detecting section 21a and the like are embedded may be formed by injection molding. However, after compression molding or injection molding of rubber, it is necessary to apply heat to perform vulcanization.
【0026】[0026]
【発明の効果】以上述べたように、本発明によれば、発
電体の積層又は巻回された正極電極の間若しくは負極電
極の間又は正極電極及び負極電極の間に温度検出部及び
圧力検出部のいずれか一方又は双方が被覆材に被覆され
た状態で設けたので、温度センサ及び圧力センサのいず
れか一方又は双方が検出する温度上昇値及び圧力値はそ
の発電体における内部の正確な値となり、発電体内部に
おける温度上昇値又は圧力を迅速かつ正確に検出するこ
とができる。この場合、被覆材を正極電極及び負極電極
の幅方向と略同一の幅又は長さを有する平板状又は平角
棒状に形成し、被覆材の幅又は長さを正極電極又は負極
電極の幅に合わせるようにして発電体の積層又は巻回さ
れた正極電極の間若しくは負極電極の間又は正極電極及
び負極電極の間に被覆材を設ければ、正極電極及び負極
電極を積層又は巻回しても、この被覆材の存在により正
極電極及び負極電極の積層面又は巻回面に不均一な凹凸
が生じることはなく、正極電極及び負極電極の積層又は
巻回が困難になることはない。このため、この被覆材を
設けたまま積層又は巻回しても、その正極電極又は負極
電極に局部的に応力が集中することもなく、それに起因
する発電体の破損を有効に防止することができる。As described above, according to the present invention, the temperature detecting section and the pressure detecting section are provided between the stacked or wound power generators between the positive electrode or the negative electrode, or between the positive electrode and the negative electrode. The temperature rise value and the pressure value detected by one or both of the temperature sensor and the pressure sensor are accurate values inside the power generator because one or both of the parts are covered with the coating material. Thus, the temperature rise value or the pressure inside the power generator can be detected quickly and accurately. In this case, the coating material is formed in a flat plate or a rectangular rod shape having substantially the same width or length as the width direction of the positive electrode and the negative electrode, and the width or length of the coating material is adjusted to the width of the positive electrode or the negative electrode. If a coating material is provided between the stacked or wound positive electrode or between the negative electrode or between the positive electrode and the negative electrode of the power generator, even if the positive electrode and the negative electrode are stacked or wound, The presence of this coating material does not cause unevenness on the lamination surface or winding surface of the positive electrode and the negative electrode, and does not make lamination or winding of the positive electrode and the negative electrode difficult. For this reason, even when laminating or winding with this coating material provided, stress is not locally concentrated on the positive electrode or the negative electrode, and damage to the power generator caused thereby can be effectively prevented. .
【図1】本発明の二次電池を示す図2のA−A線断面
図。FIG. 1 is a sectional view taken along line AA of FIG. 2 showing a secondary battery of the present invention.
【図2】その二次電池を示す図1のB−B線断面図。FIG. 2 is a cross-sectional view of the secondary battery taken along line BB of FIG. 1;
【図3】その二次電池における発電体の斜視図。FIG. 3 is a perspective view of a power generator in the secondary battery.
【図4】その二次電池の構成を示す分解斜視図。FIG. 4 is an exploded perspective view showing the configuration of the secondary battery.
【図5】その温度センサ及び圧力センサの構成を示す分
解斜視図。FIG. 5 is an exploded perspective view showing the configuration of the temperature sensor and the pressure sensor.
【図6】本発明の別の発電体の構成を示す斜視図。FIG. 6 is a perspective view showing the configuration of another power generator according to the present invention.
9 二次電池 10 発電体 11 正極電極 14 負極電極 17 セパレータ 21 温度センサ 21a 温度検出部 22 圧力センサ 22a 圧力検出部 23 被覆材 31 パッケージ Reference Signs List 9 secondary battery 10 power generator 11 positive electrode 14 negative electrode 17 separator 21 temperature sensor 21a temperature detector 22 pressure sensor 22a pressure detector 23 coating material 31 package
───────────────────────────────────────────────────── フロントページの続き (72)発明者 樋上 晃裕 埼玉県大宮市北袋町1丁目297番地 三菱 マテリアル株式会社総合研究所内 (72)発明者 張 守斌 埼玉県大宮市北袋町1丁目297番地 三菱 マテリアル株式会社総合研究所内 Fターム(参考) 5H029 AJ12 BJ02 BJ14 DJ02 DJ04 5H030 AA10 AS01 AS08 FF22 FF31 FF64 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akihiro Higami 1-297 Kitabukurocho, Omiya City, Saitama Prefecture Inside Mitsubishi Materials Corporation Research Institute (72) Inventor Morinbin Zhang 1-297 Kitabukurocho, Omiya City, Saitama Mitsubishi Material Co., Ltd. F-term (Reference) 5H029 AJ12 BJ02 BJ14 DJ02 DJ04 5H030 AA10 AS01 AS08 FF22 FF31 FF64
Claims (4)
負極電極(14)が積層又は巻回されて構成された発電体(1
0)と、温度検出部(21a)が被覆材(23)に被覆されて構成
され前記発電体(10)の温度を検出する温度センサ(21)
と、前記発電体(10)を前記温度センサ(21)とともに密封
するパッケージ(31)とを備えた非水電解質二次電池にお
いて、 前記発電体(10)の積層又は巻回された正極電極(11)の間
若しくは負極電極(14)の間又は正極電極(11)及び負極電
極(14)の間に前記温度検出部(21a)が被覆材(23)に被覆
された状態で設けられたことを特徴とする非水電解質二
次電池。A power generator (1) comprising a positive electrode (11) and a negative electrode (14) laminated or wound via a separator (17).
0), a temperature sensor (21) configured to be covered with a coating material (23) with a temperature detecting section (21a) and detecting the temperature of the power generator (10).
And a package (31) for sealing the power generator (10) together with the temperature sensor (21), in a non-aqueous electrolyte secondary battery, wherein the power generator (10) is a laminated or wound positive electrode ( 11), between the negative electrode (14), or between the positive electrode (11) and the negative electrode (14), the temperature detecting portion (21a) is provided in a state covered by the coating material (23). Non-aqueous electrolyte secondary battery characterized by the following.
負極電極(14)が積層又は巻回されて構成された発電体(1
0)と、前記発電体(10)を密封するパッケージ(31)と、圧
力検出部(22a)が被覆材(23)に被覆されて構成され前記
パッケージ(31)内部の圧力を検出する圧力センサ(22)と
を備えた非水電解質二次電池において、 前記発電体(10)の積層又は巻回された正極電極(11)の間
若しくは負極電極(14)の間又は正極電極(11)及び負極電
極(14)の間に前記圧力検出部(22a)が被覆材(23)に被覆
された状態で設けられたことを特徴とする非水電解質二
次電池。2. A power generator (1) comprising a positive electrode (11) and a negative electrode (14) laminated or wound via a separator (17).
0), a package (31) for sealing the power generator (10), and a pressure sensor configured to cover the pressure detecting portion (22a) with a coating material (23) and configured to detect the pressure inside the package (31). (22), a non-aqueous electrolyte secondary battery comprising: between the stacked or wound positive electrode (11) or between the negative electrode (14) or the positive electrode (11) of the power generator (10) and A non-aqueous electrolyte secondary battery, wherein the pressure detecting portion (22a) is provided between the negative electrode (14) in a state covered by a coating material (23).
負極電極(14)が積層又は巻回されて構成された発電体(1
0)と、温度検出部(21a)が被覆材(23)に被覆されて構成
され前記発電体(10)の温度を検出する温度センサ(21)
と、前記発電体(10)を前記温度センサ(21)とともに密封
するパッケージ(31)と、圧力検出部(22a)が被覆材(23)
に被覆されて構成され前記パッケージ(31)内部の圧力を
検出する圧力センサ(22)とを備えた非水電解質二次電池
において、 前記温度検出部(21a)及び前記圧力検出部(22a)が単一の
被覆材(23)に被覆され、 前記温度検出部(21a)及び前記圧力検出部(22a)が前記被
覆材(23)に被覆された状態で前記発電体(10)の積層又は
巻回された正極電極(11)の間若しくは負極電極(14)の間
又は正極電極(11)及び負極電極(14)の間に設けられたこ
とを特徴とする非水電解質二次電池。3. A power generator (1) configured by laminating or winding a positive electrode (11) and a negative electrode (14) via a separator (17).
0), a temperature sensor (21) configured to be covered with a coating material (23) with a temperature detecting section (21a) and detecting the temperature of the power generator (10).
And a package (31) for sealing the power generator (10) together with the temperature sensor (21), and a pressure detector (22a) comprising a coating material (23).
A non-aqueous electrolyte secondary battery including a pressure sensor (22) configured to detect a pressure inside the package (31), wherein the temperature detection unit (21a) and the pressure detection unit (22a) The power generating body (10) is laminated or wound with the temperature detecting unit (21a) and the pressure detecting unit (22a) being covered with the covering material (23). A nonaqueous electrolyte secondary battery provided between the turned positive electrode (11) or between the negative electrode (14) or between the positive electrode (11) and the negative electrode (14).
(14)の幅方向と略同一の幅又は長さを有する平板状又は
平角棒状に形成され、被覆材(23)の幅又は長さを前記正
極電極(11)又は前記負極電極(14)の幅に合わせるように
して発電体(10)の積層又は巻回された正極電極(11)の間
若しくは負極電極(14)の間又は正極電極(11)及び負極電
極(14)の間に前記被覆材(23)が設けられた請求項1ない
し3いずれか記載の非水電解質二次電池。4. The coating material (23) comprises a positive electrode (11) and a negative electrode.
(14) is formed in the shape of a flat plate or a rectangular rod having substantially the same width or length as the width direction of the coating material (23), and the width or length of the coating material (23) of the positive electrode (11) or the negative electrode (14). The coating between the stacked or wound positive electrode (11) or between the negative electrode (14) or between the positive electrode (11) and the negative electrode (14) of the power generator (10) according to the width. The non-aqueous electrolyte secondary battery according to any one of claims 1 to 3, further comprising a material (23).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001112410A JP2002313431A (en) | 2001-04-11 | 2001-04-11 | Nonaqueous electrolyte secondary battery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001112410A JP2002313431A (en) | 2001-04-11 | 2001-04-11 | Nonaqueous electrolyte secondary battery |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2002313431A true JP2002313431A (en) | 2002-10-25 |
Family
ID=18963834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001112410A Withdrawn JP2002313431A (en) | 2001-04-11 | 2001-04-11 | Nonaqueous electrolyte secondary battery |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2002313431A (en) |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004253146A (en) * | 2002-12-27 | 2004-09-09 | Matsushita Electric Ind Co Ltd | Electrochemical element |
JP2005285647A (en) * | 2004-03-30 | 2005-10-13 | Tdk Corp | Power source |
WO2010064392A1 (en) * | 2008-12-05 | 2010-06-10 | パナソニック株式会社 | Battery pack |
WO2012041278A1 (en) * | 2010-09-15 | 2012-04-05 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Electrochemical cell of an accumulator |
US20130004811A1 (en) * | 2011-06-29 | 2013-01-03 | Neel Banerjee | Battery temperature sensor |
WO2013047994A2 (en) * | 2011-09-28 | 2013-04-04 | 에스케이이노베이션 주식회사 | Battery cell and battery module |
JP2013251267A (en) * | 2012-06-04 | 2013-12-12 | Robert Bosch Gmbh | Battery cell comprising pressure-sensitive film sensor |
CN104488114A (en) * | 2013-05-06 | 2015-04-01 | 株式会社Lg化学 | Secondary battery, and secondary battery module and secondary battery pack comprising the same |
US9065147B2 (en) | 2009-04-17 | 2015-06-23 | Toyota Jidosha Kabushiki Kaisha | Battery system, vehicle, and battery-mounting device |
CN104808152A (en) * | 2014-01-24 | 2015-07-29 | 通用汽车环球科技运作有限责任公司 | Systems and methods for determining battery state information based on internal battery pressure |
CN104900932A (en) * | 2015-04-23 | 2015-09-09 | 四川长虹电源有限责任公司 | Novel lithium-ion storage battery |
DE102014222899A1 (en) | 2014-11-10 | 2016-05-25 | Robert Bosch Gmbh | sensor housing |
JP2017098184A (en) * | 2015-11-27 | 2017-06-01 | トヨタ自動車株式会社 | All-solid-state secondary battery system |
DE102016202883A1 (en) * | 2016-02-24 | 2017-09-21 | Bayerische Motoren Werke Aktiengesellschaft | A system and method for determining a thermodynamic quantity for at least one energy storage unit disposed in a vehicle |
WO2017201921A1 (en) * | 2016-05-24 | 2017-11-30 | 中兴通讯股份有限公司 | Device and method for detecting battery abnormality |
CN107482272A (en) * | 2017-07-04 | 2017-12-15 | 天津力神电池股份有限公司 | The measuring method of pressure between layers in lithium ion cell electrode group |
WO2018114226A1 (en) * | 2016-12-20 | 2018-06-28 | Bayerische Motoren Werke Aktiengesellschaft | High-voltage battery for a motor vehicle, in particular a car |
US10107867B2 (en) | 2013-11-12 | 2018-10-23 | Infineon Technologies Ag | Sensor arrangement, battery cell and energy system |
CN109037788A (en) * | 2018-10-24 | 2018-12-18 | 福建巨电新能源股份有限公司 | A kind of Soft Roll large capacity solid polymer lithium ion battery and its application |
CN111630705A (en) * | 2018-03-23 | 2020-09-04 | 重庆金康新能源汽车有限公司 | Battery cell for battery pack in electric vehicle |
CN113193306A (en) * | 2021-03-25 | 2021-07-30 | 北京理工大学 | Diaphragm with temperature sensing function |
CN113966560A (en) * | 2020-05-20 | 2022-01-21 | 株式会社Lg新能源 | Pouch-shaped secondary battery including pressure sensing device configured to measure internal pressure |
WO2022050228A1 (en) * | 2020-09-03 | 2022-03-10 | 株式会社豊田自動織機 | Electricity storage device |
WO2022145816A1 (en) * | 2020-12-28 | 2022-07-07 | 주식회사 엘지에너지솔루션 | Flexible printed circuit board for measuring internal pressure of pouch cell and method for measuring internal pressure of pouch cell |
-
2001
- 2001-04-11 JP JP2001112410A patent/JP2002313431A/en not_active Withdrawn
Cited By (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7547489B2 (en) | 2002-12-27 | 2009-06-16 | Panasonic Corporation | Electrochemical device |
JP2004253146A (en) * | 2002-12-27 | 2004-09-09 | Matsushita Electric Ind Co Ltd | Electrochemical element |
JP2005285647A (en) * | 2004-03-30 | 2005-10-13 | Tdk Corp | Power source |
JP4529516B2 (en) * | 2004-03-30 | 2010-08-25 | Tdk株式会社 | Power supply |
WO2010064392A1 (en) * | 2008-12-05 | 2010-06-10 | パナソニック株式会社 | Battery pack |
US9065147B2 (en) | 2009-04-17 | 2015-06-23 | Toyota Jidosha Kabushiki Kaisha | Battery system, vehicle, and battery-mounting device |
DE102010046307B4 (en) * | 2010-09-15 | 2018-04-12 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Electrochemical cell of a rechargeable battery |
WO2012041278A1 (en) * | 2010-09-15 | 2012-04-05 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Electrochemical cell of an accumulator |
US9391348B2 (en) | 2010-09-15 | 2016-07-12 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Electrochemical cell of an accumulator |
US20130004811A1 (en) * | 2011-06-29 | 2013-01-03 | Neel Banerjee | Battery temperature sensor |
US8828570B2 (en) * | 2011-06-29 | 2014-09-09 | Hewlett-Packard Development Company, L.P. | Battery temperature sensor |
WO2013047994A2 (en) * | 2011-09-28 | 2013-04-04 | 에스케이이노베이션 주식회사 | Battery cell and battery module |
WO2013047994A3 (en) * | 2011-09-28 | 2013-05-23 | 에스케이이노베이션 주식회사 | Battery cell and battery module |
CN103457005A (en) * | 2012-06-04 | 2013-12-18 | 罗伯特·博世有限公司 | Battery cell with ressure sensitive film sensor |
JP2013251267A (en) * | 2012-06-04 | 2013-12-12 | Robert Bosch Gmbh | Battery cell comprising pressure-sensitive film sensor |
JP2016510485A (en) * | 2013-05-06 | 2016-04-07 | エルジー・ケム・リミテッド | Secondary battery, secondary battery module including the same, and secondary battery pack |
CN104488114A (en) * | 2013-05-06 | 2015-04-01 | 株式会社Lg化学 | Secondary battery, and secondary battery module and secondary battery pack comprising the same |
US9653724B2 (en) | 2013-05-06 | 2017-05-16 | Lg Chem, Ltd. | Secondary battery, and secondary battery module and secondary battery pack comprising the same |
US10107867B2 (en) | 2013-11-12 | 2018-10-23 | Infineon Technologies Ag | Sensor arrangement, battery cell and energy system |
CN104808152A (en) * | 2014-01-24 | 2015-07-29 | 通用汽车环球科技运作有限责任公司 | Systems and methods for determining battery state information based on internal battery pressure |
DE102014222899A1 (en) | 2014-11-10 | 2016-05-25 | Robert Bosch Gmbh | sensor housing |
DE102014222899B4 (en) | 2014-11-10 | 2018-03-22 | Robert Bosch Gmbh | sensor housing |
CN104900932A (en) * | 2015-04-23 | 2015-09-09 | 四川长虹电源有限责任公司 | Novel lithium-ion storage battery |
JP2017098184A (en) * | 2015-11-27 | 2017-06-01 | トヨタ自動車株式会社 | All-solid-state secondary battery system |
CN106816660A (en) * | 2015-11-27 | 2017-06-09 | 丰田自动车株式会社 | all solid state secondary battery system |
US10003203B2 (en) | 2015-11-27 | 2018-06-19 | Toyota Jidosha Kabushiki Kaisha | All-solid-state secondary battery system |
CN106816660B (en) * | 2015-11-27 | 2018-12-18 | 丰田自动车株式会社 | all solid state secondary battery system |
DE102016202883A1 (en) * | 2016-02-24 | 2017-09-21 | Bayerische Motoren Werke Aktiengesellschaft | A system and method for determining a thermodynamic quantity for at least one energy storage unit disposed in a vehicle |
WO2017201921A1 (en) * | 2016-05-24 | 2017-11-30 | 中兴通讯股份有限公司 | Device and method for detecting battery abnormality |
CN109983615A (en) * | 2016-12-20 | 2019-07-05 | 宝马股份公司 | High-tension battery for motor vehicle, especially automobile |
WO2018114226A1 (en) * | 2016-12-20 | 2018-06-28 | Bayerische Motoren Werke Aktiengesellschaft | High-voltage battery for a motor vehicle, in particular a car |
CN107482272A (en) * | 2017-07-04 | 2017-12-15 | 天津力神电池股份有限公司 | The measuring method of pressure between layers in lithium ion cell electrode group |
CN111630705A (en) * | 2018-03-23 | 2020-09-04 | 重庆金康新能源汽车有限公司 | Battery cell for battery pack in electric vehicle |
CN111630705B (en) * | 2018-03-23 | 2023-08-11 | 重庆金康新能源汽车有限公司 | Battery cell for battery pack in electric vehicle |
CN109037788A (en) * | 2018-10-24 | 2018-12-18 | 福建巨电新能源股份有限公司 | A kind of Soft Roll large capacity solid polymer lithium ion battery and its application |
CN109037788B (en) * | 2018-10-24 | 2024-04-12 | 福建巨电新能源股份有限公司 | Soft package high-capacity solid polymer lithium ion battery and application thereof |
CN113966560A (en) * | 2020-05-20 | 2022-01-21 | 株式会社Lg新能源 | Pouch-shaped secondary battery including pressure sensing device configured to measure internal pressure |
EP4009417A4 (en) * | 2020-05-20 | 2024-06-12 | Lg Energy Solution, Ltd. | Pouch-type secondary battery including pressure-sensing device for measuring internal pressure |
WO2022050228A1 (en) * | 2020-09-03 | 2022-03-10 | 株式会社豊田自動織機 | Electricity storage device |
JP7488996B2 (en) | 2020-09-03 | 2024-05-23 | 株式会社豊田自動織機 | Power storage device |
WO2022145816A1 (en) * | 2020-12-28 | 2022-07-07 | 주식회사 엘지에너지솔루션 | Flexible printed circuit board for measuring internal pressure of pouch cell and method for measuring internal pressure of pouch cell |
CN113193306A (en) * | 2021-03-25 | 2021-07-30 | 北京理工大学 | Diaphragm with temperature sensing function |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2002313431A (en) | Nonaqueous electrolyte secondary battery | |
US11437683B2 (en) | Battery cell of venting structure using taping | |
KR100496305B1 (en) | Pouched-type lithium secondary battery and the fabrication method thereof | |
US7722984B2 (en) | Reinforced pouch type secondary battery | |
US8658296B2 (en) | Rechargeable battery | |
JP4562693B2 (en) | Secondary battery with improved stability by fixing a separator to the battery case | |
KR101792572B1 (en) | Battery Cell Having Electrode Coated with Insulating Material | |
KR101229228B1 (en) | Secondary Battery with Improved Moisture Barrier | |
KR101766047B1 (en) | Battery Cell | |
KR101367751B1 (en) | secondary battery and manufacturing method thereof | |
KR101776897B1 (en) | Pouch type secondary battery and method for manufacturing the same | |
US20160028051A1 (en) | Pouch-type secondary battery for preventing water permeation | |
JP7134543B2 (en) | Electrode assembly including plastic member applied to electrode tab lead connection and secondary battery including the same | |
KR20140094205A (en) | Rechargeable battery | |
KR101441530B1 (en) | Battery Cell of Novel Structure And Battery Pack Employed with the Same | |
JP5673838B2 (en) | Secondary battery | |
KR100346378B1 (en) | Lithium polymer battery pack | |
JP4438348B2 (en) | Bipolar battery and battery pack | |
KR102006203B1 (en) | A pouch case with enhanced insulating property and a pouch type secondary battery | |
KR20180115064A (en) | Battery Cell Comprising Hot-melting Adhesive Part | |
KR20040005242A (en) | Jelly-roll type battery unit forming short prevention means and the lithium secondary battery applying the same | |
KR20190112582A (en) | Battery cell cartridge having uniformity surface pressure | |
JP2001338687A (en) | Sealed cell | |
US20100028781A1 (en) | Electrode pack of an electrichemical cell and electrochemical cell with an electrode pack | |
KR20190112579A (en) | Sensing bus bar for reducing voltage deviation |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20080701 |