JPH04137369A - Battery charger for polymer battery - Google Patents
Battery charger for polymer batteryInfo
- Publication number
- JPH04137369A JPH04137369A JP2258140A JP25814090A JPH04137369A JP H04137369 A JPH04137369 A JP H04137369A JP 2258140 A JP2258140 A JP 2258140A JP 25814090 A JP25814090 A JP 25814090A JP H04137369 A JPH04137369 A JP H04137369A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- charging
- current
- heater
- polymer
- 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.)
- Pending
Links
- 229920000642 polymer Polymers 0.000 title abstract description 3
- 239000005518 polymer electrolyte Substances 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000007600 charging Methods 0.000 abstract description 18
- 238000010277 constant-current charging Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002250 progressing effect Effects 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- -1 alkali metal salt Chemical class 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910001914 chlorine tetroxide Inorganic materials 0.000 description 1
- 238000010280 constant potential charging Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920001002 functional polymer Polymers 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Chemical compound [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 description 1
- 229920006112 polar polymer Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
【発明の詳細な説明】
産業上の利用分野
本発明はポリマー電解質を使用した、比較的内部抵抗の
高い二次電池を充電するための充電器を提供するもので
ある。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a charger for charging a secondary battery having a relatively high internal resistance, using a polymer electrolyte.
従来の技術
近年の小型電子技術の発達にともない、より小型、より
高エネルギー密度の電池が要求されている。特にポータ
プル機器や、ＩＣカード等のカード型機器の電源として
軽量で高エネルギー密度の電池や薄型電池の要望が強く
、薄型化、軽量化が可能なポリマー電解質電池の開発が
進められている。BACKGROUND OF THE INVENTION With the recent development of compact electronic technology, smaller batteries with higher energy density are required. In particular, there is a strong demand for lightweight, high-energy-density batteries and thin batteries as power sources for portable devices and card-type devices such as IC cards, and development of polymer electrolyte batteries that can be made thinner and lighter is progressing.
ポリマー電解質とは、極性高分子樹脂にアルカリ金属塩
に代表されるイオン性物質を溶解したり分散させること
により、イオン伝導性を与えた固体の電解質である。伝
導するイオン種と最適な正極、負極を選定することより
、各種−次電池、二次電池を構成することができる。特
にポリエチレンオキサイドやポリプロピレンオキサイド
及びその誘導体にいＣｌＯ４やいＣＦ、ＳＯ，等のリチ
ウム塩を溶解したポリマー電解質は薄型化が可能なこと
から、電池のみならず、ＥＣＤ素子（エレクトロクロミ
ックデイスプレィ素子）やセンサー等の電気化学デバイ
ス用としても研究が進められている。A polymer electrolyte is a solid electrolyte that is made to have ionic conductivity by dissolving or dispersing an ionic substance such as an alkali metal salt in a polar polymer resin. By selecting conductive ionic species and optimal positive and negative electrodes, various secondary batteries and secondary batteries can be constructed. In particular, polymer electrolytes containing dissolved lithium salts such as polyethylene oxide, polypropylene oxide, and their derivatives, ClO4, CF, SO, etc. can be made thinner, so they can be used not only for batteries but also for ECD elements (electrochromic display elements). Research is also progressing for use in electrochemical devices such as sensors and sensors.
ポリマー電解質を使用した電池は小型化や薄型化が可能
で、漏液がなく、高い起電力の電池系が使用できること
から、信頼性の高い、高エネルギー密度電池を構成する
ことができる。また電解質層を弾力性のあるシート状と
することが容易なため、充放電にともなう電極の体積変
化の履歴を受けにくく、サイクル寿命の長い二次電池を
作ることが可能である。Batteries using polymer electrolytes can be made smaller and thinner, have no leakage, and can be used in battery systems with high electromotive force, making it possible to construct highly reliable, high energy density batteries. Furthermore, since it is easy to form the electrolyte layer into an elastic sheet, it is possible to produce a secondary battery with a long cycle life, which is less susceptible to the history of electrode volume changes due to charging and discharging.
発明が解決しようとする問題点
ポリマー電解質を使用した電池は内部抵抗が高いために
、低電流で長時間放電するような用途にその使用が限定
されており、二次電池を構成しても充電に極めて長時間
かかるために実用性に乏しいという欠点があった。すな
わち、数十時間かかって放電した電池に充電するのに、
同じように数十時間もかかるためにこの電池の特徴を生
かすことができなかった。Problems to be Solved by the Invention Batteries using polymer electrolytes have high internal resistance, so their use is limited to applications where they are discharged at low current for long periods of time, and even if they are configured as a secondary battery, they cannot be charged. The drawback was that it took an extremely long time to complete, making it impractical. In other words, it takes several tens of hours to charge a discharged battery.
Similarly, since it took several tens of hours, the characteristics of this battery could not be utilized.
問題点を解決環＃＃ホするための手段
本発明は、充電器にポリマー電池を加熱するためのヒー
ターを備えたことを特徴とするものである。Means for solving the problems The present invention is characterized in that the charger is equipped with a heater for heating the polymer battery.
作用
ポリマー電解質二次電池は温度を上げることにより、内
部抵抗が低下し、高率電流での充電が可能となり、充電
時間が短縮できる。ポリマー電解質は常温もしくは低温
では導電率が低いが、温度が高くなるにつれて急激に導
電率は向上し、大電流の通電が可能となる。例えば、ポ
リエチレンオキサイドにいＣＦ３５０３を２０％溶解し
たポリマー電解質の導電率は常温では１．５ｘｌＯ−７
Ｓ／ａｍであるが、８０℃においては約４００倍の８ｘ
ｌＯ−５Ｓ／ｃｍまて増大する。By raising the temperature of a functional polymer electrolyte secondary battery, the internal resistance decreases, making it possible to charge at a high rate of current and shorten the charging time. Polymer electrolytes have low conductivity at room temperature or low temperatures, but as the temperature rises, the conductivity rapidly improves, making it possible to conduct large currents. For example, the conductivity of a polymer electrolyte containing 20% polyethylene oxide CF3503 is 1.5xlO-7 at room temperature.
S/am, but at 80°C it is about 400 times 8x
It increases by 1O-5S/cm.
実施例 以下、本発明を好適な実施例を用いて説明する。Example The present invention will be explained below using preferred embodiments.
第１図は本発明充電器の一例を示す回路図である。１は
電圧変換器で、外部電源に接続される入力端子２と、出
力端子３．４から構成されている。FIG. 1 is a circuit diagram showing an example of the charger of the present invention. Reference numeral 1 denotes a voltage converter, which is composed of an input terminal 2 connected to an external power source and an output terminal 3.4.
出力端子３は充電電流用で、充電制御部５を経て、接続
部６に出力されている。接続部６にポリマー電解質二次
電池７の端子部を接続することにより充電が行われる。The output terminal 3 is for charging current, and is outputted to the connection section 6 via the charging control section 5. Charging is performed by connecting the terminal portion of the polymer electrolyte secondary battery 7 to the connecting portion 6.
出力端子４は電池を加熱するためのヒーター８月の電源
である。ヒーター８として、セラミックヒータ−やニク
ロム線ヒーターＰＴＩ−ミスタ等が使用できる。ヒータ
ーは充電される二次電池に直接接触させてもよいが、円
筒状や角形の電池の場合、充電器の電池収納部全体を加
熱して、間接的に電池を加熱してもよい。シート状電池
の場合は面状のヒーターによる直接加熱が可能である。Output terminal 4 is the power source for a heater for heating the battery. As the heater 8, a ceramic heater, a nichrome wire heater PTI-Mister, or the like can be used. The heater may be brought into direct contact with the secondary battery to be charged, but in the case of cylindrical or prismatic batteries, the heater may heat the entire battery compartment of the charger to indirectly heat the battery. In the case of sheet-shaped batteries, direct heating using a planar heater is possible.
電池がＩＣカード等の電子機器に内蔵されている場合は
、当該部分のみを加熱してもよい。なお、正確な温度調
節が必要な場合は温度コントローラーを内蔵してもよい
。If the battery is built into an electronic device such as an IC card, only that part may be heated. In addition, if accurate temperature control is required, a temperature controller may be incorporated.
第２図にポリマー電解質二次電池の一例として、シート
状電池を示した。形状は４０ｘ５０ｘ０．５ｍｍのシー
ト状で、正極はアモルファス化したｖ２０５、負極はリ
チウム金属であり、電解質として７％のＬｉＣｌＯ４を
溶解したポ リエチレンオキサイドを使用した。この電
池の平均電圧は２．６■てあり、容量は３ｍＡｈである
。７は電池本体であり、９は正Ｆｉ！端子、１０は負極
端子である。この電池の内部抵抗は温度２５℃において
約１にΩであるが、５０℃に加熱すると約０．１にΩま
で低下する。温度１０℃では約１０にΩまで増大する。FIG. 2 shows a sheet-shaped battery as an example of a polymer electrolyte secondary battery. The shape was a sheet of 40 x 50 x 0.5 mm, the positive electrode was amorphous v205, the negative electrode was lithium metal, and the electrolyte was polyethylene oxide in which 7% LiClO4 was dissolved. The average voltage of this battery is 2.6 mm, and the capacity is 3 mAh. 7 is the battery body, 9 is the positive Fi! Terminal 10 is a negative terminal. The internal resistance of this battery is about 1Ω at a temperature of 25°C, but decreases to about 0.1Ω when heated to 50°C. At a temperature of 10°C, it increases to about 10Ω.
従来この種の電池は、常温では、０．１ｍＡ以下の電流
で数十時間の充電が必要であったが、本発明の充電器に
より充電と同時に、ヒーターで電池を約５０℃に加熱す
ることにより、１ｍＡ以上での充電が可能となり、約３
時間で充電が終了した。Conventionally, this type of battery required charging for several tens of hours with a current of 0.1 mA or less at room temperature, but with the charger of the present invention, the battery can be heated to approximately 50°C with a heater at the same time as charging. This makes it possible to charge at 1mA or more, approximately 3 mA or more.
Charging was completed within an hour.
ポリマー電解質二次電池は電池温度によって最大充電電
流が変化する。したがって、充電方法は、電解質の分解
電圧以下に設定した定電圧充電が好ましいが、電池温度
を正確に調整する場合は定電流充電も可能である。The maximum charging current of polymer electrolyte secondary batteries changes depending on the battery temperature. Therefore, as a charging method, constant voltage charging set to a value lower than the decomposition voltage of the electrolyte is preferable, but constant current charging is also possible if the battery temperature is accurately adjusted.
発明の効果
以上のように、本発明は、従来困難であったポリマー電
解質二次電池の短時間充電を可能とするものであり、工
業的価値の大きなものである。Effects of the Invention As described above, the present invention enables short-time charging of polymer electrolyte secondary batteries, which has been difficult in the past, and is of great industrial value.
第１図は本発明充電器の回路図であり、第２図はポリマ
ー電解質二次電池の斜視図である。
１・・・・・電圧変換器
２・・・・・入力端子
３．４・・・出力端子
５・・・・・充電制御部
６・・・・・接続部
７・・・・・ポリマー電解質二次電池
８・・・・・ヒーター
９・・・・・正極端子
瑳
図
１−−−−一電也ｔｈ撓器
５−−−−一たｔ＃’３都部
７−−−−−！：’）”ｉ：、−ｔＡ’４−＄、−ン’
；ｉｔ氾８−−−−−と−クーFIG. 1 is a circuit diagram of the charger of the present invention, and FIG. 2 is a perspective view of a polymer electrolyte secondary battery. 1... Voltage converter 2... Input terminal 3.4... Output terminal 5... Charging control section 6... Connection section 7... Polymer electrolyte Secondary battery 8...Heater 9...Positive electrode terminal Figure 1----Ichidenya th deflector 5----Ita t#'3 Tokyo part 7---- ! :')"i:, -tA'4-$, -n'
;it flood 8----- and -ku
Claims (1)
とを特徴とするポリマー電解質二次電池用充電器。1. A charger for a polymer electrolyte secondary battery characterized by being equipped with a heater for heating the battery to be charged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2258140A JPH04137369A (en) | 1990-09-26 | 1990-09-26 | Battery charger for polymer battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2258140A JPH04137369A (en) | 1990-09-26 | 1990-09-26 | Battery charger for polymer battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04137369A true JPH04137369A (en) | 1992-05-12 |
Family
ID=17316075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2258140A Pending JPH04137369A (en) | 1990-09-26 | 1990-09-26 | Battery charger for polymer battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04137369A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010084836A1 (en) * | 2009-01-23 | 2010-07-29 | ソニー株式会社 | Fuel cell system and electronic device |
| US9590439B2 (en) | 2012-10-22 | 2017-03-07 | Toyota Jidosha Kabushiki Kaisha | Control device of battery charging |
-
1990
- 1990-09-26 JP JP2258140A patent/JPH04137369A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010084836A1 (en) * | 2009-01-23 | 2010-07-29 | ソニー株式会社 | Fuel cell system and electronic device |
| JP2010170887A (en) * | 2009-01-23 | 2010-08-05 | Sony Corp | Fuel cell system and electronic equipment |
| US8957622B2 (en) | 2009-01-23 | 2015-02-17 | Sony Corporation | Fuel cell system and electronic device |
| US9590439B2 (en) | 2012-10-22 | 2017-03-07 | Toyota Jidosha Kabushiki Kaisha | Control device of battery charging |
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