JP4377565B2 - Plate battery connection structure - Google Patents
Plate battery connection structure Download PDFInfo
- Publication number
- JP4377565B2 JP4377565B2 JP2002131504A JP2002131504A JP4377565B2 JP 4377565 B2 JP4377565 B2 JP 4377565B2 JP 2002131504 A JP2002131504 A JP 2002131504A JP 2002131504 A JP2002131504 A JP 2002131504A JP 4377565 B2 JP4377565 B2 JP 4377565B2
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- JP
- Japan
- Prior art keywords
- battery
- plate
- connection structure
- lithium ion
- ion secondary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 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
Description
【0001】
【発明の属する技術分野】
本発明は、組電池を構成する板状電池の接続構造に関する。
【0002】
【従来の技術】
近年、環境問題などから、ハイブリッド自動車や電気自動車、夜間電力を有効活用するための電力のロードレベリングなどが着目されている。そこで、これらに用いるバッテリとして、各種二次電池が開発されている。
【0003】
リチウムイオン二次電池はエネルギー密度が高く、かつ密閉型でメンテナンスフリーであるので、ハイブリッド自動車や電気自動車のバッテリとしての用途に適しているが、大型のものは実用化されていない。
一方、金属層の両面を樹脂層で被覆してなるラミネートシートを外装材とし、これに発電要素を封入した、板状のリチウムイオン二次電池が開発されている。このリチウムイオン二次電池は、単体(単電池)では出力が小さいが、これらを多数個直列に接続して組電池を構成し、前記の用途に用いるバッテリとすることが考えられている。
【0004】
しかし、単電池を複数個、直列に接続して構成される組電池では、充放電を行っていく過程で、各単電池の電圧がばらついてくる。
すると、電圧の低い単電池は、放電時に過放電になりやすく、電圧の高い単電池は、充電時に過充電になりやすいため、各単電池の早期劣化を招く。
このため、各単電池のセル電圧を均等化するための電子回路(セル電圧均等化回路)を各単電池に接続し、これら各単電池の電圧が均等になるように制御する必要がある。
【0005】
しかし、組電池を構成する単電池が、前記板状のリチウムイオン電池のような薄い板状電池である場合には、組電池を構成する単電池が互いに密接して配設されるため、各単電池にそれぞれセル電圧均等化回路を接続することが非常に困難となる。
【0006】
【発明が解決しようとする課題】
本発明の課題は、組電池の要素として用いられる各板状電池にそれぞれ、セル電圧均等化回路を容易に接続可能な、板状電池の接続構造を提供することである。
【0009】
【課題を解決するための手段】
以上の課題を解決するため、請求項1に記載の発明は、正極に接続され、電池本体の一側部に突出する補助電極を備える第1の板状電池と、負極に接続され、電池本体の一側部に突出する補助電極を備える第2の板状電池とを、その補助電極を片側に揃えた状態で交互に配置して直列接続したことを特徴とする。
【0010】
請求項1に記載の発明によれば、正極に接続され、電池本体の一側部に突出する補助電極を備える第1の板状電池と、負極に接続され、電池本体の一側部に突出する補助電極を備える第2の板状電池とが、その補助電極を片側に揃えた状態で交互に配置され直列接続されているので、各板状電池に、これら板状電池の電圧を均等に保つためのセル電圧均等化回路を接続するのに便利である。
これにより、板状電池の接続構造が簡素な構造となり、この板状電池の接続構造を用いて、小型、軽量な組電池を構成することができる。
【0011】
【発明の実施の形態】
以下、図面を参照しながら、板状電池、および本発明の板状電池の接続構造の実施の形態を詳細に説明する。
【0012】
本実施の形態では、図2に示すように、金属層の両面を樹脂層で被覆してなるラミネートシート内に発電要素を収容してなるリチウムイオン二次電池(第1の板状電池)1A,(第2の板状電池)1Bを複数個、立てた状態で、これらを直列に接続して、バッテリ(組電池)が構成されている。
【0013】
リチウムイオン二次電池1Aは、図1(a)に示すように、平板状の電池本体11と薄板状の正極12、負極13と、正極12に接続され電池本体11の一側部に突出する補助電極14を備えて、構成されている。
リチウムイオン二次電池1Bは、図1(b)に示すように、平板状の電池本体11と薄板状の正極12、負極13と、負極13に接続され電池本体11の一側部に突出する補助電極14を備えて、構成されている。
【0014】
このバッテリでは、図2に示すように、リチウムイオン二次電池1A,1Bが交互に、それらの電池本体11が重ね合わされた状態に配置されている。そして、互いに隣接するリチウムイオン二次電池1A,1Bの、一方の正極12と、他方の負極13とが接続されている。
このように第1の板状電池1Aと第2の板状電池1Bとを配置すると、これらの幅方向の両側のうちの片方に、第1の板状電池1Aと第2の板状電池1Bとの補助電極14が揃えられる。
そして、これら第1の板状電池1Aと第2の板状電池1Bとの補助電極14がそれぞれ、セル電圧均等化回路2に接続されている。
このようにして、本実施の形態の板状電池の接続構造が構成されている。
【0015】
本実施の形態に記載のリチウムイオン二次電池(板状電池)1A,1B、および板状電池の接続構造によれば、正極12と負極13とのいずれか一方に接続され、電池本体11の一側部に突出する補助電極14を備えているので、これらリチウムイオン二次電池1A,1Bを、その補助電極14を片側に揃えた状態で配置して互いに接続することができる。したがって、各リチウムイオン二次電池1A,1Bに、これらリチウムイオン二次電池1A,1Bの電圧を均等に保つためのセル電圧均等化回路2を接続するのに便利である。
【0016】
これにより、板状電池の接続構造が簡素な構造となり、この板状電池の接続構造を用いて、小型、軽量なバッテリを構成することができる。
【0017】
なお、板状電池、および本発明の板状電池の接続構造は、前記の実施の形態に限定されることなく、本発明の趣旨を逸脱しない範囲において、種々の改良並びに設計の変更を行っても良い。
例えば、前記各実施の形態では、第1の板状電池1Aと第2の板状電池1Bとが用いられているが、これに、補助電極14が取り付けられていないリチウムイオン二次電池20を併用し、板状電池を所定個ずつ並列に接続し、これらをさらに直列に接続して組電池を構成してもよい。この場合には、互いに並列に接続した組電池ごとに、セル電圧均等化回路を取り付ければ、各板状電池の電圧が均等になるように制御することができる。
その他、具体的な細部構造等についても適宜に変更可能であることは勿論である。
【0019】
【発明の効果】
請求項1に記載の発明によれば、正極に接続され、電池本体の一側部に突出する補助電極を備える第1の板状電池と、負極に接続され、電池本体の一側部に突出する補助電極を備える第2の板状電池とが、その補助電極を片側に揃えた状態で交互に配置され直列接続されているので、各板状電池に、これら板状電池の電圧を均等に保つためのセル電圧均等化回路を接続するのに便利である。
これにより、板状電池の接続構造が簡素な構造となり、この板状電池の接続構造を用いて、小型、軽量な組電池を構成することができる。
【図面の簡単な説明】
【図1】 板状電池の一例を示す斜視図である。
【図2】 本発明の板状電池の接続構造の一例を示す斜視図である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connecting structure of a plate-like battery constituting the battery pack.
[0002]
[Prior art]
In recent years, attention has been paid to hybrid vehicles, electric vehicles, and power load leveling for effective use of nighttime power due to environmental problems. Therefore, various secondary batteries have been developed as batteries used for these.
[0003]
Lithium ion secondary batteries have high energy density, are sealed and maintenance-free, and are therefore suitable for use as a hybrid vehicle or electric vehicle battery, but large-sized ones have not been put into practical use.
On the other hand, a plate-like lithium ion secondary battery has been developed in which a laminate sheet formed by coating both surfaces of a metal layer with a resin layer is used as an exterior material, and a power generation element is enclosed therein. Although this lithium ion secondary battery has a small output as a single battery (single battery), it is considered that a large number of these lithium ion secondary batteries are connected in series to form an assembled battery to be used for the above-mentioned application.
[0004]
However, in an assembled battery configured by connecting a plurality of unit cells in series, the voltage of each unit cell varies in the process of charging and discharging.
Then, since the unit cell with a low voltage tends to be overdischarged at the time of discharge, and the unit cell with a high voltage tends to be overcharged at the time of charge, it causes early deterioration of each unit cell.
For this reason, it is necessary to connect an electronic circuit (cell voltage equalization circuit) for equalizing the cell voltage of each unit cell to each unit cell and to control the voltage of each unit cell to be equal.
[0005]
However, when the unit cells constituting the assembled battery are thin plate batteries such as the plate-like lithium ion battery, the unit cells constituting the assembled battery are arranged in close contact with each other. It becomes very difficult to connect a cell voltage equalization circuit to each unit cell.
[0006]
[Problems to be solved by the invention]
The subject of this invention is providing the connection structure of a plate battery which can connect a cell voltage equalization circuit to each plate battery used as an element of an assembled battery easily, respectively.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, the invention according to
[0010]
According to the first aspect of the present invention, the first plate-like battery including the auxiliary electrode connected to the positive electrode and protruding to one side portion of the battery main body, and connected to the negative electrode and protruding to one side portion of the battery main body. Since the second plate batteries having auxiliary electrodes are alternately arranged and connected in series with the auxiliary electrodes arranged on one side, the voltage of these plate batteries is evenly distributed to each plate battery. It is convenient to connect a cell voltage equalization circuit for maintaining.
Thereby, the connection structure of a plate battery becomes a simple structure, and a small and lightweight assembled battery can be comprised using this connection structure of a plate battery.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, with reference to the accompanying drawings, plate-shaped battery, and the embodiment of the connection structure of the plate-shaped battery of the present invention will be described in detail.
[0012]
In this embodiment, as shown in FIG. 2, a lithium ion secondary battery (first plate battery) 1A in which a power generation element is housed in a laminate sheet in which both surfaces of a metal layer are covered with a resin layer. , (Second plate-like battery) 1B in a standing state, these are connected in series to constitute a battery (assembled battery).
[0013]
As shown in FIG. 1A, the lithium ion
As shown in FIG. 1B, the lithium ion
[0014]
In this battery, as shown in FIG. 2, lithium ion
When the
The
In this manner, the plate battery connection structure of the present embodiment is configured.
[0015]
According to the lithium ion secondary battery (plate battery) 1A, 1B and the plate battery connection structure described in the present embodiment, the battery
[0016]
Thereby, the connection structure of a plate battery becomes a simple structure, A small and lightweight battery can be comprised using this connection structure of a plate battery.
[0017]
The connection structure of the plate-shaped battery of the plate-like battery, and the present invention is not limited to the embodiments without departing from the scope and spirit of the present invention, by performing various improvements and changes of design Also good.
For example, in each of the above embodiments, the
In addition, it is needless to say that specific detailed structures and the like can be appropriately changed.
[0019]
【The invention's effect】
According to the first aspect of the present invention, the first plate-like battery including the auxiliary electrode connected to the positive electrode and protruding to one side portion of the battery main body, and connected to the negative electrode and protruding to one side portion of the battery main body. Since the second plate batteries having auxiliary electrodes are alternately arranged and connected in series with the auxiliary electrodes arranged on one side, the voltage of these plate batteries is evenly distributed to each plate battery. It is convenient to connect a cell voltage equalization circuit for maintaining.
Thereby, the connection structure of a plate-shaped battery becomes a simple structure, and a small and lightweight assembled battery can be comprised using this connection structure of a plate-shaped battery.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of a plate battery.
FIG. 2 is a perspective view showing an example of a connection structure of plate batteries of the present invention.
Claims (1)
を特徴とする板状電池の接続構造。A first plate battery that includes an auxiliary electrode that is connected to the positive electrode and protrudes from one side of the battery body, and a second plate battery that includes an auxiliary electrode that is connected to the negative electrode and protrudes from one side of the battery body. Are connected in series with the auxiliary electrodes arranged on one side alternately and connected in series.
Priority Applications (1)
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JP2002131504A JP4377565B2 (en) | 2002-05-07 | 2002-05-07 | Plate battery connection structure |
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JP2002131504A JP4377565B2 (en) | 2002-05-07 | 2002-05-07 | Plate battery connection structure |
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JP2003323882A JP2003323882A (en) | 2003-11-14 |
JP4377565B2 true JP4377565B2 (en) | 2009-12-02 |
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JP2002131504A Expired - Fee Related JP4377565B2 (en) | 2002-05-07 | 2002-05-07 | Plate battery connection structure |
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Families Citing this family (25)
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JP4400235B2 (en) * | 2004-02-03 | 2010-01-20 | 新神戸電機株式会社 | Connection structure between batteries |
US7659029B2 (en) | 2004-10-26 | 2010-02-09 | Nissan Motor Co., Ltd. | Battery module with insulating plates nipping electrode tabs |
JP4747574B2 (en) * | 2004-12-24 | 2011-08-17 | トヨタ自動車株式会社 | Assembled battery |
KR100809846B1 (en) | 2005-03-17 | 2008-03-04 | 주식회사 엘지화학 | Jig for balancing of battery cells |
JP4977356B2 (en) * | 2005-10-26 | 2012-07-18 | 日本電気株式会社 | Electrical device assembly |
US8999558B2 (en) | 2007-01-12 | 2015-04-07 | Enovix Corporation | Three-dimensional batteries and methods of manufacturing the same |
JP5159112B2 (en) * | 2007-01-24 | 2013-03-06 | 三洋電機株式会社 | Battery pack and manufacturing method thereof |
US8119269B2 (en) * | 2007-05-10 | 2012-02-21 | Enovix Corporation | Secondary battery with auxiliary electrode |
EP2017938A1 (en) * | 2007-07-18 | 2009-01-21 | Magna Steyr Fahrzeugtechnik AG & Co. KG | Accumulator |
US8475957B2 (en) | 2008-04-17 | 2013-07-02 | Enovix Corporation | Negative electrode structure for non-aqueous lithium secondary battery |
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JP5439099B2 (en) * | 2009-09-16 | 2014-03-12 | Udトラックス株式会社 | Power storage device and power storage module |
US9843027B1 (en) | 2010-09-14 | 2017-12-12 | Enovix Corporation | Battery cell having package anode plate in contact with a plurality of dies |
WO2013112135A1 (en) | 2012-01-24 | 2013-08-01 | Enovix Corporation | Ionically permeable structures for energy storage devices |
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EP3641030B1 (en) | 2013-03-15 | 2022-03-02 | Enovix Corporation | Three-dimensional batteries |
US10283807B2 (en) | 2015-05-14 | 2019-05-07 | Enovix Corporation | Longitudinal constraints for energy storage devices |
EP3455898A4 (en) | 2016-05-13 | 2019-12-18 | Enovix Corporation | Dimensional constraints for three-dimensional batteries |
CN110178260B (en) | 2016-11-16 | 2023-05-02 | 艾诺维克斯公司 | Three-dimensional battery with compressible cathode |
US10256507B1 (en) | 2017-11-15 | 2019-04-09 | Enovix Corporation | Constrained electrode assembly |
TWI794330B (en) | 2017-11-15 | 2023-03-01 | 美商易諾維公司 | Electrode assembly, secondary battery, and method of manufacture |
US11211639B2 (en) | 2018-08-06 | 2021-12-28 | Enovix Corporation | Electrode assembly manufacture and device |
JP2023547993A (en) | 2020-09-18 | 2023-11-15 | エノビクス・コーポレイション | Apparatus, system, and method for manufacturing electrodes for use in batteries |
JP2023553115A (en) | 2020-12-09 | 2023-12-20 | エノビクス・コーポレイション | Apparatus, systems and methods for manufacturing electrodes, electrode stacks and batteries |
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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