JP2012234684A5

JP2012234684A5 -

Info

Publication number: JP2012234684A5
Application number: JP2011101890A
Authority: JP
Filing date: 2011-04-28
Publication date: 2014-06-19
Anticipated expiration: 2031-04-28

Description

上記の目的を達成するために本発明に係るメンテナンスを考慮した電池システムは、複数の単位電池と、隣り合う単位電池同士の間に設けられた導電部材とを有し、単位電池を複数積層して直列に接続してなる第１電池モジュールと、複数の単位電池と、隣り合う単位電池同士の間に設けられた導電部材とを有し、単位電池を複数積層して直列に接続してなる電池モジュールであって、正極端子と負極端子の間に電気を取り出すための接続端子をさらに設けた第２電池モジュールと、を直列に接続して構成される電池システムであって、前記導電部材は、前記単位電池を介して隣り合う導電部材同士を短絡させる、導電性素材で形成された短絡部材が取り付けられるように構成される。
In order to achieve the above object, a battery system considering maintenance according to the present invention includes a plurality of unit cells and a conductive member provided between adjacent unit cells, and a plurality of unit cells are stacked. A first battery module connected in series , a plurality of unit cells, and a conductive member provided between adjacent unit cells , and a plurality of unit cells are stacked and connected in series. a battery module, and a further second battery module having a connection terminal for taking out electricity between the positive and negative terminals, the a battery system constructed by connecting in series, the conductive members A short-circuit member formed of a conductive material that short-circuits adjacent conductive members via the unit battery is attached .

この構成によれば、電池モジュールを複数台直列に接続してなる電池システムにおいて、当該電池モジュールのプラス側の電気を取り出すための正極端子とマイナス側の電気を取り出すための負極端子の間に、正極端子または負極端子とは別の接続端子を設けて、第２電池モジュールを構成することにより、正極端子と負極端子間の電圧よりも小さな電圧を取り出すことを可能にしている。これにより、電池モジュールの出力電圧を調整可能にしている。
According to this configuration, in the battery system formed by connecting the battery modules to multiple series, between the negative electrode terminal for taking out the positive electrode terminal and the negative side electricity for taking out the positive side of the electric of the battery module, the positive electrode terminal or negative electrode terminal is provided another connection terminal, by configuring the second battery module, and than the voltage between the positive terminal and the negative terminal it possible to take out a small voltage. Thereby, the output voltage of the battery module can be adjusted.

不具合が生じた単位電池に隣接する導電部材同士を、導電性の短絡部材を介して短絡させることにより、単位電池を外部短絡させることができる。これにより、確実に不具合の生じた単位電池を外部短絡させることができる。
The conductive members that are adjacent to the unit cell a problem occurs, by shorting through the conductive short-circuit member can be external short circuit the unit cells. Thereby , it is possible to short-circuit the unit battery in which the defect has occurred reliably.

外部短絡した単位電池のセル数に応じて第２電池モジュールの電気の取り出す端子を選んでもよい。これにより、電池システムの出力電圧を所望の値に保つことができる。このような電気の取り出し端子は接続端子であってもよく、また、正極端子もしくは負極端子であってもよい。
A terminal for taking out electricity from the second battery module may be selected in accordance with the number of unit batteries that are externally short-circuited . Thereby, the output voltage of a battery system can be maintained at a desired value. Such an electrical extraction terminal may be a connection terminal, or may be a positive terminal or a negative terminal.

請求項２記載のメンテナンスを考慮した電池システムは、前記単位電池に取り付けられ、前記単位電池の出力電圧を計測し、出力電圧値を示す電圧信号を送信するセル電圧計と、前記セル電圧計からの電圧信号を受信する電池監視装置と、作動時に前記電池システムに流れる電流を遮断する遮断器と、をさらに備え、前記電池監視装置は、前記セル電圧計の電圧値が所定の値より小さいと判別したときに、前記遮断器を作動させる。
A battery system in consideration of maintenance according to claim 2 is a cell voltmeter attached to the unit battery, measuring an output voltage of the unit battery, and transmitting a voltage signal indicating an output voltage value, and the cell voltmeter a battery monitoring device which receives a voltage signal, and a circuit breaker for interrupting a current flowing through the battery system during operation, further wherein the battery monitoring device, the voltage value of the cell voltage meter is smaller than the predetermined value when it is determined, actuating the circuit breaker.

請求項３記載のメンテナンスを考慮した電池システムは、前記電池監視装置は、前記セル電圧計の電圧値が前記所定の値より小さく、かつ、該セル電圧計に対応する単位電池に隣接する前記導電部材同士が、前記短絡部材により短絡されている状態であると判別したときは、前記遮断器を作動させない。
The battery system considering maintenance according to claim 3, wherein the battery monitoring device is configured such that the voltage value of the cell voltmeter is smaller than the predetermined value and the conductive battery adjacent to the unit battery corresponding to the cell voltmeter is used. members to each other, when it is determined that the state of being short-circuited by the short-circuit member is not operated the breaker.

この構成によれば、短絡状態の判別はセル電圧計の計測値で行う。例えば、ほぼゼロの電圧値が複数回以上計測された場合に遮断器を開放する。ほぼゼロというのはセル電圧計には誤差があるし、また、接続部分の熱起電力より、実際の電圧はゼロにも関わらず値を持って計測される場合があるので、多少の許容差を持たせる必要があるためである。複数回とは好ましくは３回以上であって、過渡的な影響を排除する時間的余裕を持たせたものである。
According to this configuration, the short-circuit state is determined by the measured value of the cell voltmeter. For example, the circuit breaker is opened when a substantially zero voltage value is measured more than once. Almost zero means that there is an error in the cell voltmeter, and the actual voltage may be measured with a value even though it is zero due to the thermoelectromotive force of the connection part, so there is some tolerance. It is because it is necessary to have. The plurality of times is preferably three times or more, and has a time margin for eliminating transient effects.

請求項４記載のメンテナンスを考慮した電池システムは、前記導電部材が、板状の形状であって、前記第１および第２電池モジュールの積層方向に直交して延びる係合孔が形成されており、前記短絡部材は、板状の本体部と、該本体部に突設され、前記単位電池を介して隣り合う前記導電部材同士を短絡させるように前記導電部材の係合孔に係合する係合突起とを有する。
The battery system considering maintenance according to claim 4, wherein the conductive member has a plate shape, and an engagement hole extending perpendicularly to a stacking direction of the first and second battery modules is formed. the short-circuit member comprises a plate-like body portion, projecting from the body portion, engages the engaging hole of said conductive member so as to short the case cormorants before Kishirubeden members together next through the unit cell Engaging protrusions.

この構成によれば、電池モジュールを構成する単位電池間に、係合孔を有する板状の導電部材を介在させ、この導電部材、および、導電部材の係合孔に係合する係合突起を有する短絡部材を介して、単位電池を外部短絡させることができる。したがって、簡単な構造の導電部材および短絡部材を電池モジュールに用いるのみで、確実に異常な単位電池を外部短絡させることができる。しかも、導電部材および短絡部材の材質や寸法を変更することが可能となる。また、異常な単位電池を検出したときに応急処置的に１セルのみ外部短絡させても、残りの単位電池に大きな影響を及ぼすことなく、電池モジュールの性能を確保することができる。
According to this configuration, the plate-shaped conductive member having the engagement hole is interposed between the unit cells constituting the battery module, and the engagement protrusion that engages with the conductive member and the engagement hole of the conductive member is provided. The unit battery can be externally short-circuited through the short-circuit member having the same. Accordingly, the conductive member and the shorting member having a simple structure only using the battery module, it is possible to make external short circuit reliably abnormal unit battery. In addition, the materials and dimensions of the conductive member and the short-circuit member can be changed. Moreover , even if only one cell is externally short-circuited as an emergency measure when an abnormal unit battery is detected, the performance of the battery module can be ensured without greatly affecting the remaining unit batteries.

請求項５記載のメンテナンスを考慮した電池システムは、前記導電部材の前記係合孔が気体又は液体からなる冷媒の流通経路を構成している。
Cell system in consideration of maintenance of claim 5 constitutes a circulation path of refrigerant, wherein the engaging hole of said conductive member is composed of gas or liquid.

この構成によれば、このように構成することにより、導電部材を、単位電池を冷却するための放熱板として利用することが可能になる。その結果、電池モジュールにおける単位電池を冷却して、充放電時の電池温度上昇を抑制することにより、単位電池間の容量劣化のばらつきを抑えてより確実に電池モジュールの性能を確保することができる。
According to this structure, it becomes possible to utilize a conductive member as a heat sink for cooling a unit battery by comprising in this way. As a result, by cooling the unit battery in the battery module and suppressing the battery temperature rise at the time of charging / discharging, it is possible to more reliably secure the performance of the battery module by suppressing the variation in capacity deterioration between the unit batteries. .

請求項６記載のメンテナンスを考慮した電池システムは、前記第２電池モジュールにおいて、隣接する前記単位電池同士の間に、前記導電部材の代わりに、電気の良導体からなる中間集電体を設け、該中間集電体に前記接続端子を取り付けてなる。
The battery system in consideration of maintenance according to claim 6, wherein in the second battery module, an intermediate current collector made of a good conductor of electricity is provided between the adjacent unit cells , instead of the conductive member , The connection terminal is attached to an intermediate current collector.

この構成によれば、第２電池モジュールの単位電池の間に中間集電体を設けて、中間集電体に接続端子を設ける。このような中間集電体は好ましくは１〜４であって、中間集電体は多すぎると単位電池の収納数が減るので最大４であることが好ましい。このような構成とすることにより、容易に第２電池モジュールより所望の電池モジュールの中間の電圧を取り出すことが可能となる。
According to this configuration, the intermediate current collector provided between the unit cells of the second battery module, providing a connection to an intermediate current collector terminal. Such an intermediate current collector is preferably 1 to 4, and if the number of intermediate current collectors is too large, the number of unit cells to be accommodated decreases, so that the maximum number is preferably 4. By setting it as such a structure, it becomes possible to take out the intermediate voltage of a desired battery module from a 2nd battery module easily.

請求項７記載のメンテナンスを考慮した電池システムは、前記第２電池モジュールの前記中間集電体の厚みが、前記単位電池の厚みと、１枚または２枚の前記導電部材の厚みとを合わせたものに等しい。
Cell system in consideration of maintenance of claim 7, wherein the thickness of the intermediate current collector of the second battery module, and the thickness of the unit cell, combined with the thickness of one or two of the conductive member Equal to the thing .

この構成によれば、中間集電体の厚みを、単位電池の厚みと１枚または２枚の導電部材の厚みとを合わせた厚みにすることにより、電池モジュールの設計寸法の標準化を図ることが可能となる。これにより、接続端子を設けない第１電池モジュールにおいて、通常であれば単位電池等が収納される場所に中間集電体を配置することにより第２電池モジュールを構成することができる。また、製品の歩留まりを改善して、製造コストの上昇を抑えることができる。
According to this configuration, by making the thickness of the thickness of the intermediate current collectors, a combination of the thicknesses of the one or two of the conductive member of the unit cell, making it possible to standardize the design size of the battery module It becomes possible. Thus, in the first battery module without the connection terminals, Ru can be a unit battery or the like would normally constitute a second battery module by arranging the intermediate current collector in place to be stored. In addition , the yield of the product can be improved and an increase in manufacturing cost can be suppressed.

また、このメンテナンスを考慮した電池システムは、前記電池監視装置が、前記単位電池を流れる電流を計測する電流計からの信号を受信して、前記単位電池のＳＯＣを計算するとともに、前記第２電池モジュールにおいて新しく供用になる単位電池のＳＯＣが前記短絡部材で短絡されていない単位電池のＳＯＣと同じになるように充電を行う充電器を備えてもよい。
The battery system considering maintenance this, the battery monitoring device receives the signal from the current meter for measuring the current flowing through the unit cell, as well as calculates the SOC of the unit cell, the second You may provide the charger which charges so that SOC of the unit battery newly used in a battery module may become the same as SOC of the unit battery which is not short-circuited with the said short circuit member.

請求項８記載の電力供給システムは、交流電力回線から受電する変圧器と該変圧器に接続された整流装置と該整流装置に接続されたき電線とを有する電気鉄道用の変電所に用いられる電力供給システムであって、請求項１〜７のいずれか１項に記載の電池システムを前記き電線に直結してなる。 The power supply system according to claim 8 , wherein the power used in an electric railway substation having a transformer receiving power from an AC power line, a rectifier connected to the transformer, and a feeder connected to the rectifier. a supply system, ing directly connected battery system according to the-out wire to one of claims 1 to 7.

Claims

A first battery module having a plurality of unit cells and a conductive member provided between adjacent unit cells, wherein a plurality of unit cells are stacked and connected in series ;
A battery module having a plurality of unit cells and a conductive member provided between adjacent unit cells, wherein a plurality of unit cells are stacked and connected in series, and between a positive electrode terminal and a negative electrode terminal A second battery module further provided with a connection terminal for extracting electricity;
A battery system configured by connecting in series ,
The battery system in consideration of maintenance, wherein the conductive member is configured such that a short-circuit member formed of a conductive material that short-circuits adjacent conductive members via the unit battery is attached .

A cell voltmeter attached to the unit battery, measuring an output voltage of the unit battery, and transmitting a voltage signal indicating an output voltage value ;
A battery monitoring device for receiving a voltage signal from the cell voltmeter;
And a circuit breaker for interrupting a current flowing through the battery system during operation,
The battery monitoring device, when the voltage value of the cell voltage meter is determined to a predetermined value smaller than the battery system considering maintenance of claim 1 for operating the circuit breaker.

Condition the battery monitoring device, the cell voltmeter smaller voltage value than the predetermined value, and wherein the conductive member which are adjacent to the unit cell corresponding to the cell voltage meter is shorted by the shorting member The battery system in consideration of the maintenance according to claim 2 , wherein when it is determined that , the circuit breaker is not operated.

The conductive member has a plate-like shape, and an engagement hole extending orthogonally to the stacking direction of the first and second battery modules is formed.
The short-circuit member comprises a plate-like body portion, projecting from the body portion to engage the engaging hole of said conductive member so as to short the case cormorants before Kishirubeden members together next through the unit cell The battery system which considered the maintenance of any one of Claims 1-3 which has an engagement protrusion.

The engagement hole constitute a circulation path of the refrigerant consisting of gas or liquid, the battery system considering maintenance of claim 4 wherein the conductive member.

In the second battery module, an intermediate current collector made of a good electrical conductor is provided between the adjacent unit cells instead of the conductive member, and the connection terminal is attached to the intermediate current collector . The battery system which considered the maintenance of any one of Claims 1-5 .

The thickness of the intermediate current collector of the second battery module, and the thickness of the unit cell, equal to the sum of the thickness of one or two of the conductive member, considering the maintenance of claim 6 Battery system.

A power supply system used in an electric railway substation having a transformer receiving power from an AC power line, a rectifier connected to the transformer, and a feeder connected to the rectifier ,
Ru power supply system name is directly linked to the-out wire of the battery system according to any one of claims 1-7.