JP5230762B2 - Measuring terminal device - Google Patents

Measuring terminal device Download PDF

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JP5230762B2
JP5230762B2 JP2011040003A JP2011040003A JP5230762B2 JP 5230762 B2 JP5230762 B2 JP 5230762B2 JP 2011040003 A JP2011040003 A JP 2011040003A JP 2011040003 A JP2011040003 A JP 2011040003A JP 5230762 B2 JP5230762 B2 JP 5230762B2
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substrate
terminals
battery
terminal device
cell voltage
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JP2012177589A (en
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正隆 内田
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Mitsubishi Heavy Industries Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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Description

本発明は、二次電池の端子電圧(セル電圧)などを計測するための計測端子装置に関する。   The present invention relates to a measurement terminal device for measuring a terminal voltage (cell voltage) or the like of a secondary battery.

従来、リチウムイオン二次電池などの二次電池1は、例えば図5に示すように、複数の正極板2及び負極板3が積層して構成された電極体4と、電極体4を収容する例えばアルミニウム製の電池缶5と、電池缶5の内部から外部に貫通して設けられた正負一対の電極端子6、7とを備えている。   2. Description of the Related Art Conventionally, a secondary battery 1 such as a lithium ion secondary battery accommodates an electrode body 4 configured by laminating a plurality of positive electrode plates 2 and negative electrode plates 3, as shown in FIG. For example, a battery can 5 made of aluminum and a pair of positive and negative electrode terminals 6 and 7 provided from the inside of the battery can 5 to the outside are provided.

そして、電力供給線としての配線を用いて、このような複数の二次電池(電池セル)1を互いに直列または並列に接続して組電池を構成して使用されることが多い。例えば、この組電池を車両などに搭載して各種機器の電源に利用することが行われている。   In many cases, a plurality of secondary batteries (battery cells) 1 are connected in series or in parallel to each other to form an assembled battery using a wiring as a power supply line. For example, this assembled battery is mounted on a vehicle or the like and used as a power source for various devices.

一方、組電池を構成する各二次電池1は、使用時にセル電圧(端子電圧)やセル温度、容器電圧(電池缶5の電圧)が計測されている(例えば、特許文献1参照)。計測された電圧や温度に異常が確認された場合には、例えば、電池への充放電の停止や、電圧や温度を正常に戻すような制御がされている。   On the other hand, each secondary battery 1 constituting the assembled battery is measured for cell voltage (terminal voltage), cell temperature, and container voltage (voltage of the battery can 5) during use (see, for example, Patent Document 1). When an abnormality is confirmed in the measured voltage or temperature, for example, control is performed such as stopping charging / discharging of the battery or returning the voltage or temperature to normal.

実用新案登録第3156003号公報Utility Model Registration No. 3156003

そして、従来、セル電圧やセル温度などを計測するために、ハーネスなどの配線(計測線)で接続した電圧計測端子(セル電圧計測端子)やサーミスタを各電極端子6、7や電池缶5にボルトやカプトンテープや接着材等で固定して接続するようにしていた。このため、工数が多くなり、電圧計測端子やサーミスタの接続に多大な労力と時間を要するという問題があった。   Conventionally, in order to measure cell voltage, cell temperature, etc., voltage measuring terminals (cell voltage measuring terminals) and thermistors connected by wiring (measuring lines) such as harnesses are connected to the electrode terminals 6 and 7 and the battery can 5. It was fixed and connected with bolts, Kapton tape, adhesives, etc. For this reason, there is a problem that man-hours increase and a great amount of labor and time are required to connect the voltage measurement terminal and the thermistor.

本発明の計測端子装置は、配線が形成された基板と、前記配線に接続して前記基板に設けられ、二次電池の正負一対の電極端子と接続して前記一対の電極端子の電圧を計測するための一対のセル電圧計測端子と、前記基板に設けられ、前記一対のセル電圧計測端子と電気的に接続したコネクタとを備えていることを特徴とする。   The measuring terminal device of the present invention is a substrate on which wiring is formed, and is connected to the wiring and provided on the substrate, and is connected to a pair of positive and negative electrode terminals of a secondary battery to measure the voltage of the pair of electrode terminals. And a connector provided on the substrate and electrically connected to the pair of cell voltage measurement terminals.

この発明においては、二次電池の所定位置に基板を設置するとともに二次電池の正負一対の電極端子にそれぞれセル電圧計測端子を嵌合させて接続することができ、従来のようにセル電圧計測端子をボルトなどで固定して接続する場合と比較し、容易にセル電圧計測端子を電極端子に接続することが可能になる。   In this invention, the substrate can be installed at a predetermined position of the secondary battery, and the cell voltage measurement terminals can be fitted and connected to the pair of positive and negative electrode terminals of the secondary battery, respectively. Compared with the case where the terminal is fixed and connected with a bolt or the like, the cell voltage measurement terminal can be easily connected to the electrode terminal.

また、基板に設けられたコネクタとセル電圧計測端子が基板の配線を介して接続されているため、コネクタに配線を接続することで、容易に制御装置と接続してセル電圧(端子電圧)を計測することが可能になる。   In addition, since the connector provided on the board and the cell voltage measurement terminal are connected via the wiring of the board, the cell voltage (terminal voltage) can be easily connected to the control device by connecting the wiring to the connector. It becomes possible to measure.

本発明の計測端子装置によれば、従来のように各電極端子にセル電圧計測端子をカプトンテープなどで固定して接続したり、制御装置をハーネスなどの配線(計測線)で接続することを不要にでき、工数を少なくし、接続に要する労力の低減、時間の削減を図ることが可能になる。   According to the measurement terminal device of the present invention, the cell voltage measurement terminal is fixed and connected to each electrode terminal with Kapton tape or the like, and the control device is connected with wiring (measurement line) such as a harness. This eliminates the need for man-hours, reduces man-hours, reduces the labor required for connection, and reduces time.

本発明の一実施形態に係る計測端子装置及び二次電池を示す斜視図である。It is a perspective view which shows the measurement terminal device and secondary battery which concern on one Embodiment of this invention. 本発明の一実施形態に係る計測端子装置を二次電池に取り付けた状態を示す平面図(上面視図)である。It is a top view (top view) which shows the state which attached the measuring terminal device which concerns on one Embodiment of this invention to the secondary battery. 図2のX1−X1線矢視図であり、本発明の一実施形態に係る計測端子装置を二次電池に取り付けた状態を示す側面図である。FIG. 3 is a side view taken along line X1-X1 in FIG. 2 and shows a state in which a measurement terminal device according to an embodiment of the present invention is attached to a secondary battery. 本発明の一実施形態に係る計測端子装置の変形例を示す斜視図である。It is a perspective view which shows the modification of the measurement terminal device which concerns on one Embodiment of this invention. 二次電池を示す斜視図である。It is a perspective view which shows a secondary battery.

以下、図1から図3を参照し、本発明の一実施形態に係る計測端子装置について説明する。なお、本実施形態は、組電池を構成するリチウムイオン二次電池などの二次電池(電池セル)に取り付け、使用時に各二次電池のセル電圧(端子電圧)、セル温度、容器電圧(電池缶電圧)を計測するための計測端子装置に関するものである。   Hereinafter, a measurement terminal device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. In addition, this embodiment attaches to secondary batteries (battery cell), such as a lithium ion secondary battery which comprises an assembled battery, and uses the cell voltage (terminal voltage), cell temperature, container voltage (battery) of each secondary battery at the time of use. The present invention relates to a measurement terminal device for measuring (can voltage).

はじめに、本実施形態の二次電池1は、図5に示したように、複数の正極板2及び負極板3が積層して構成された電極体4と、電極体4を収容する電池缶5と、電池缶5の内部から外部に貫通して設けられた正負一対の電極端子6、7とを備えている。また、本実施形態において、各電極端子6、7は、その外面に軸線中心の周方向に延びて繋がる環状の溝(係合凹部)15が形成されている(図1参照)。   First, as shown in FIG. 5, the secondary battery 1 of the present embodiment includes an electrode body 4 configured by laminating a plurality of positive electrode plates 2 and negative electrode plates 3, and a battery can 5 that houses the electrode bodies 4. And a pair of positive and negative electrode terminals 6, 7 provided penetrating from the inside of the battery can 5 to the outside. In the present embodiment, each electrode terminal 6, 7 is formed with an annular groove (engagement recess) 15 extending on the outer surface in the circumferential direction around the axis line (see FIG. 1).

また、電池缶5は、例えばアルミニウム製であり、一面が開口した本体部8と、本体部8の開口を閉塞する蓋部9とを有する。正負一対の電極端子6、7は、それぞれ電池缶5の蓋部9に貫通して設けられた絶縁スリーブ10に嵌合することで、電池缶5に対して絶縁された状態で固定されている。さらに、電極体4を構成する正極板2と負極板3とは、交互に積層され、互いの間にセパレータ11を介装して絶縁されている。また、蓋部9には、電池缶5の内部に電解液を注入するための注液口12が形成され、この注液口12には、注液口12を開閉するための栓ボルト13が取り付けられている。   Further, the battery can 5 is made of, for example, aluminum, and includes a main body portion 8 that is open on one side and a lid portion 9 that closes the opening of the main body portion 8. The pair of positive and negative electrode terminals 6 and 7 are fixed in an insulated state with respect to the battery can 5 by being fitted into an insulating sleeve 10 provided so as to penetrate the lid portion 9 of the battery can 5. . Furthermore, the positive electrode plates 2 and the negative electrode plates 3 constituting the electrode body 4 are alternately stacked, and are insulated with a separator 11 interposed therebetween. In addition, a liquid injection port 12 for injecting an electrolyte into the battery can 5 is formed in the lid portion 9, and a plug bolt 13 for opening and closing the liquid injection port 12 is formed in the liquid injection port 12. It is attached.

また、正極板2及び負極板3は、それぞれ対応する電極端子6、7と接続するためのタブ2a、3aを有している。正極板2は正極板2のタブ2a同士を束ねた正極タブ束を介して、負極板3は負極板3のタブ3a同士を束ねた負極タブ束を介して、対応する電極端子6、7と接続されている。   Moreover, the positive electrode plate 2 and the negative electrode plate 3 have tabs 2a and 3a for connecting to corresponding electrode terminals 6 and 7, respectively. The positive electrode plate 2 is connected to the corresponding electrode terminals 6, 7 via the positive electrode tab bundle obtained by bundling the tabs 2 a of the positive electrode plate 2, and the negative electrode plate 3 is connected via the negative electrode tab bundle obtained by bundling the tabs 3 a of the negative electrode plate 3. It is connected.

この二次電池(電池セル)1を直列、並列配置して電池収容ケース内に収容することにより組電池が構成される。この筐体内に収容した複数の二次電池1は、電極端子6、7同士がバスバー16(図3参照)で接続される。   The assembled battery is configured by arranging the secondary batteries (battery cells) 1 in series and in parallel and accommodating them in a battery housing case. In the plurality of secondary batteries 1 housed in the housing, the electrode terminals 6 and 7 are connected to each other by a bus bar 16 (see FIG. 3).

そして、本実施形態では、組電池を構成する各二次電池1に、図1から図3に示すように、セル電圧やセル温度、容器電圧を計測するための計測端子装置Aが取り付けられる。   And in this embodiment, as shown in FIGS. 1-3, the measurement terminal device A for measuring a cell voltage, cell temperature, and a container voltage is attached to each secondary battery 1 which comprises an assembled battery.

図1に示すように、本実施形態の計測端子装置Aは、配線17〜20が形成された基板(配線基板)21を備え、この基板21にセル電圧を計測するための一対のセル電圧計測端子22、23と、二次電池1の温度を計測するためのサーミスタ(温度計測子)24と、電池缶5の電圧を計測するための容器電圧計測端子25と、これらセル電圧計測端子22、23、サーミスタ24、容器電圧計測端子25のそれぞれと、配線17〜20を介して電気的に接続されたコネクタ26が設けられている。   As shown in FIG. 1, the measurement terminal device A of the present embodiment includes a substrate (wiring substrate) 21 on which wirings 17 to 20 are formed, and a pair of cell voltage measurements for measuring a cell voltage on the substrate 21. Terminals 22, 23, a thermistor (temperature measuring element) 24 for measuring the temperature of the secondary battery 1, a container voltage measuring terminal 25 for measuring the voltage of the battery can 5, and the cell voltage measuring terminals 22, 23, a thermistor 24, and a container voltage measurement terminal 25, and a connector 26 that is electrically connected via wirings 17 to 20.

基板21は、略矩形平板状であり、その長手方向の長さを二次電池1の幅(電池缶5の蓋部9の幅)と略同等の寸法にして形成されている。また、この基板21は、長手方向に沿う一側端部21aに、長手方向に所定の間隔をあけ、一側端部21aから他側端部21b側に向けて凹む一対の凹所27、28を設けて、平面視略E字状に形成されている。なお、コネクタ26は、このように形成された基板21の他側端部21b側に一体に設けられている。   The substrate 21 has a substantially rectangular flat plate shape, and is formed with a length in the longitudinal direction substantially equal to the width of the secondary battery 1 (the width of the lid portion 9 of the battery can 5). The substrate 21 has a pair of recesses 27 and 28 that are recessed from the one side end 21a toward the other side end 21b at a predetermined interval in the one side end 21a along the longitudinal direction. And is formed in a substantially E shape in plan view. The connector 26 is integrally provided on the other end 21b side of the board 21 formed in this way.

一対のセル電圧計測端子22、23は、基板21に形成された一対の凹所27、28にそれぞれ配設されている。また、本実施形態のセル電圧計測端子22、23は、対応する電極端子6、7を着脱するための挿入口22a、23aを有する略C形の環状に形成されていて、それぞれ電極端子6、7に嵌合される。ここで、一対のセル電圧計測端子22、23は、導電性材料、具体的にはアルミニウムや銅などの金属からなるとともに、挿入口22a、23aの幅を拡縮するように弾性変形可能に形成されている。そして、各セル電圧計測端子22、23は、その中心軸となる軸線O1方向を基板21(基板21の上面及び下面(基板面))に直交する上下方向に向け、且つ挿入口22a、23aを基板21の一側端部21a側に配し、基板21の基板面に沿う横方向外側に向けて、基板21に一体に設けられている。さらに、本実施形態のセル電圧計測端子22、23は、図1に示すように、その内面に、内面から径方向内側に突出し、軸線O1中心の周方向に延びる係合凸部29が形成されている。   The pair of cell voltage measurement terminals 22 and 23 are respectively disposed in a pair of recesses 27 and 28 formed in the substrate 21. In addition, the cell voltage measurement terminals 22 and 23 of the present embodiment are formed in a substantially C-shaped annular shape having insertion openings 22a and 23a for attaching and detaching the corresponding electrode terminals 6 and 7, respectively. 7 is fitted. Here, the pair of cell voltage measurement terminals 22 and 23 are made of a conductive material, specifically, a metal such as aluminum or copper, and are formed to be elastically deformable so as to expand and contract the width of the insertion ports 22a and 23a. ing. Each cell voltage measurement terminal 22, 23 has its axis O 1 direction as the central axis directed in the vertical direction perpendicular to the substrate 21 (the upper surface and the lower surface (substrate surface) of the substrate 21), and the insertion ports 22 a, 23 a The substrate 21 is provided integrally with the substrate 21 so as to be disposed on one side end portion 21 a side and outward in the lateral direction along the substrate surface of the substrate 21. Further, as shown in FIG. 1, the cell voltage measuring terminals 22 and 23 of the present embodiment are formed with engagement protrusions 29 projecting radially inward from the inner surface and extending in the circumferential direction around the center of the axis O1, as shown in FIG. ing.

サーミスタ24は、図1から図3に示すように、一端側を基板21の配線19に接続して基板21に一体に設けられている。また、本実施形態のサーミスタ24は、図3に示すように、基板21の下面との間にスポンジなどの弾性体30を介装した状態で設けられ、他端側を基板21の下面から斜め下側に突出させて設けられている。   As shown in FIGS. 1 to 3, the thermistor 24 is provided integrally with the substrate 21 with one end connected to the wiring 19 of the substrate 21. Further, as shown in FIG. 3, the thermistor 24 of the present embodiment is provided with an elastic body 30 such as a sponge interposed between the lower surface of the substrate 21, and the other end is inclined from the lower surface of the substrate 21. It is provided to protrude downward.

容器電圧計測端子25は、導電性材料、具体的にはアルミニウムや銅などの金属からなり、図1及び図2に示すように、環状に形成されている。そして、基板21の配線20に接続しつつ、内孔が基板21の上面から下面に貫通するようにして基板21に一体に設けられている。また、本実施形態の容器電圧計測端子25は、基板21を二次電池1の上面の所定位置に設置した状態で、電池缶5の蓋部9に形成された注液口12と内孔が上下に重なるように配設されている。   The container voltage measuring terminal 25 is made of a conductive material, specifically, a metal such as aluminum or copper, and is formed in an annular shape as shown in FIGS. 1 and 2. The inner hole is provided integrally with the substrate 21 so as to penetrate from the upper surface to the lower surface of the substrate 21 while being connected to the wiring 20 of the substrate 21. Further, the container voltage measuring terminal 25 of the present embodiment has an injection hole 12 and an inner hole formed in the lid portion 9 of the battery can 5 with the substrate 21 placed at a predetermined position on the upper surface of the secondary battery 1. It is arranged so as to overlap vertically.

次に、上記構成からなる本実施例の計測端子装置Aを二次電池1に取り付ける説明をするとともに、本実施形態の計測端子装置Aの作用及び効果について説明する。   Next, the measurement terminal device A of the present embodiment having the above-described configuration will be described as being attached to the secondary battery 1, and the operation and effect of the measurement terminal device A of the present embodiment will be described.

はじめに、本実施形態の計測端子装置Aを二次電池1に取り付ける際には、二次電池1の電池缶5の注液口12から栓ボルト13を取外した状態にしておく。なお、この栓ボルト13は、計測端子装置Aの基板21に設けた容器電圧計測端子25の内孔に予め取り付けておくようにしてもよい。   First, when attaching the measurement terminal device A of the present embodiment to the secondary battery 1, the plug bolt 13 is removed from the liquid injection port 12 of the battery can 5 of the secondary battery 1. The cap bolt 13 may be attached in advance to the inner hole of the container voltage measuring terminal 25 provided on the substrate 21 of the measuring terminal device A.

そして、図1及び図2に示すように、二次電池1の正負一対の電極端子6、7に向けて基板21を横方向に移動し、一対のセル電圧計測端子22、23の挿入口22a、23aから一対の電極端子6、7をそれぞれ内部に挿入して嵌合させる。このとき、セル電圧計測端子22、23は、略C形の環状に形成された弾性変形可能であるため、弾性変形しながら電極端子6、7と嵌合する。   Then, as shown in FIGS. 1 and 2, the substrate 21 is moved laterally toward the pair of positive and negative electrode terminals 6, 7 of the secondary battery 1, and the insertion openings 22 a of the pair of cell voltage measurement terminals 22, 23. , 23a, a pair of electrode terminals 6 and 7 are respectively inserted and fitted therein. At this time, since the cell voltage measurement terminals 22 and 23 are elastically deformable and formed in a substantially C-shaped ring shape, the cell voltage measurement terminals 22 and 23 are fitted with the electrode terminals 6 and 7 while being elastically deformed.

これにより、本実施形態の計測端子装置Aは、二次電池1の電極端子6、7に向けて基板21を横方向に移動させることで、二次電池1の上面の所定位置に基板21を設置することができるとともに、一対のセル電圧計測端子22、23の内部に一対の電極端子6、7をそれぞれ嵌合させることができる。このため、ワンタッチで容易にセル電圧計測端子22、23を電極端子6、7に接続できる。また、このように接続した状態で、セル電圧計測端子22、23が電極端子6、7をクランプ保持することになり、確実且つ強固にセル電圧計測端子22、23を電極端子6、7に接続できる。   Thereby, the measurement terminal apparatus A of this embodiment moves the board | substrate 21 to the electrode terminals 6 and 7 of the secondary battery 1, and moves the board | substrate 21 in the predetermined position of the upper surface of the secondary battery 1. The pair of electrode terminals 6 and 7 can be fitted inside the pair of cell voltage measurement terminals 22 and 23, respectively. For this reason, the cell voltage measurement terminals 22 and 23 can be easily connected to the electrode terminals 6 and 7 with one touch. In addition, the cell voltage measuring terminals 22 and 23 hold the electrode terminals 6 and 7 in a clamped state in such a state, and the cell voltage measuring terminals 22 and 23 are securely and firmly connected to the electrode terminals 6 and 7. it can.

さらに、本実施形態では、電極端子6、7の外面に係合部となる係合凹部(溝)15が形成され、セル電圧計測端子22、23の内面にこの係合凹部と係合する係合凸部29が形成されている。そして、基板21を横方向に移動し、セル電圧計測端子22、23の内部に電極端子6、7を嵌合させると、電極端子6、7の係合凹部15にセル電圧計測端子22、23の係合凸部29が係合する。このため、本実施形態では、セル電圧計測端子22、23が電極端子6、7をクランプ保持することに加え、互いの係合凹部15と係合凸部29同士が係合することによって、より確実且つ強固にセル電圧計測端子22、23が電極端子6、7に接続されることになる。   Further, in the present embodiment, an engagement recess (groove) 15 serving as an engagement portion is formed on the outer surface of the electrode terminals 6 and 7, and the inner surface of the cell voltage measurement terminals 22 and 23 is engaged with the engagement recess. A joint convex portion 29 is formed. Then, when the substrate 21 is moved in the lateral direction and the electrode terminals 6 and 7 are fitted inside the cell voltage measurement terminals 22 and 23, the cell voltage measurement terminals 22 and 23 are inserted into the engagement recesses 15 of the electrode terminals 6 and 7. The engaging projections 29 engage. For this reason, in this embodiment, in addition to the cell voltage measurement terminals 22 and 23 holding the electrode terminals 6 and 7 clamped, the engagement concave portions 15 and the engagement convex portions 29 are engaged with each other. The cell voltage measuring terminals 22 and 23 are securely and firmly connected to the electrode terminals 6 and 7.

一方、図3に示すように、二次電池1の上面の所定位置に基板21を設置して、二次電池1の一対の電極端子6、7にそれぞれセル電圧計測端子22、23を嵌合させると、基板21に一体に設けられたサーミスタ(温度計測子)24が電池缶5の蓋部9に接触する。また、本実施形態では、サーミスタ24が基板21の下面との間にスポンジ(弾性体)30を介装した状態で基板21の下面から斜設されているため、二次電池1の上面に基板21を設置すると、スポンジ30の弾性力でサーミスタ24が付勢され、電池缶5に圧接する。これにより、確実に、サーミスタ24が電池缶5に接触し、接触した状態で保持されることになる。   On the other hand, as shown in FIG. 3, the substrate 21 is installed at a predetermined position on the upper surface of the secondary battery 1, and the cell voltage measurement terminals 22 and 23 are fitted to the pair of electrode terminals 6 and 7 of the secondary battery 1, respectively. Then, the thermistor (temperature measuring element) 24 provided integrally with the substrate 21 comes into contact with the lid portion 9 of the battery can 5. In the present embodiment, the thermistor 24 is obliquely provided from the lower surface of the substrate 21 with a sponge (elastic body) 30 interposed between the thermistor 24 and the lower surface of the substrate 21. When 21 is installed, the thermistor 24 is urged by the elastic force of the sponge 30 and presses against the battery can 5. This ensures that the thermistor 24 contacts the battery can 5 and is held in contact therewith.

また、二次電池1の上面に基板21を設置して、二次電池1の一対の電極端子6、7にそれぞれセル電圧計測端子22、23を嵌合させると、基板21に一体に設けられた容器電圧計測端子25が電池缶5と接続する。本実施形態では、基板21を二次電池1の上面の所定位置に設置した状態で、電池缶5の蓋部9に形成された注液口12と容器電圧計測端子25の内孔が連通する。このため、基板21を二次電池1の上面の所定位置に設置したとき、容器電圧計測端子25の内孔に栓ボルト13を挿通し注液口12に螺合することにより、容器電圧計測端子25を栓ボルト13で固定されて二次電池1の電池缶5に取り付けることができる。これにより、容器電圧計測端子25は、栓ボルト13を介してアルミニウム製の電池缶5に電気的に接続されるとともに、確実且つ強固に接続される。   Further, when the substrate 21 is installed on the upper surface of the secondary battery 1 and the cell voltage measuring terminals 22 and 23 are fitted to the pair of electrode terminals 6 and 7 of the secondary battery 1, respectively, the substrate 21 is integrally provided. The container voltage measuring terminal 25 is connected to the battery can 5. In the present embodiment, the liquid injection port 12 formed in the lid portion 9 of the battery can 5 and the inner hole of the container voltage measurement terminal 25 communicate with each other in a state where the substrate 21 is installed at a predetermined position on the upper surface of the secondary battery 1. . For this reason, when the board | substrate 21 is installed in the predetermined position of the upper surface of the secondary battery 1, by inserting the plug | bolt bolt 13 in the inner hole of the container voltage measurement terminal 25 and screwing it in the liquid injection port 12, it is a container voltage measurement terminal. 25 can be fixed to the battery can 5 of the secondary battery 1 by being fixed with the plug bolt 13. As a result, the container voltage measuring terminal 25 is electrically connected to the aluminum battery can 5 via the plug bolt 13 and is securely and firmly connected.

そして、このように計測端子装置Aを、組電池を構成する全ての二次電池1に取り付けた段階で、各計測端子装置Aのコネクタ26に配線を接続し、各計測端子装置Aの一対のセル電圧計測端子22、23とサーミスタ24と容器電圧計測端子25をそれぞれ制御装置に接続する。これにより、二次電池1は、使用時にセル電圧(端子電圧)やセル温度、容器電圧(電池缶電圧)が計測され、電圧や温度に異常が確認された場合、計測結果を受けた制御装置によって、電池1への充電の停止、電圧や温度を正常に戻す制御がされる。   Then, when the measurement terminal device A is attached to all the secondary batteries 1 constituting the assembled battery in this way, wiring is connected to the connector 26 of each measurement terminal device A, and a pair of each measurement terminal device A is connected. The cell voltage measuring terminals 22 and 23, the thermistor 24, and the container voltage measuring terminal 25 are connected to the control device. Thereby, when the secondary battery 1 is used, the cell voltage (terminal voltage), the cell temperature, and the container voltage (battery can voltage) are measured, and if an abnormality is confirmed in the voltage or temperature, the control device that has received the measurement result Thus, the charging of the battery 1 is stopped and the voltage and temperature are controlled to return to normal.

したがって、本実施形態の計測端子装置Aにおいては、二次電池1の上面の所定位置に基板21を設置するとともに二次電池1の一対の電極端子6、7にそれぞれセル電圧計測端子22、23を嵌合させて接続することができ、従来のようにセル電圧計測端子をカプトンテープなどで固定して接続する場合と比較し、容易にセル電圧計測端子22、23を電極端子6、7に接続することが可能になる。   Therefore, in the measurement terminal device A of the present embodiment, the substrate 21 is installed at a predetermined position on the upper surface of the secondary battery 1 and the cell voltage measurement terminals 22 and 23 are respectively connected to the pair of electrode terminals 6 and 7 of the secondary battery 1. The cell voltage measuring terminals 22 and 23 can be easily connected to the electrode terminals 6 and 7 as compared with the conventional case where the cell voltage measuring terminals are fixed and connected with Kapton tape or the like. It becomes possible to connect.

また、基板21に設けられたコネクタ26とセル電圧計測端子22、23が基板21の配線17、18で接続されているため、コネクタ26に配線を接続することで、容易に制御装置と接続することができ、セル電圧(端子電圧)を計測することが可能になる。   Further, since the connector 26 provided on the substrate 21 and the cell voltage measurement terminals 22 and 23 are connected by the wirings 17 and 18 of the substrate 21, the wiring can be easily connected to the connector 26 by connecting the wiring to the connector 26. And the cell voltage (terminal voltage) can be measured.

よって、本実施形態の計測端子装置Aによれば、従来のように各電極端子6、7にセル電圧計測端子をカプトンテープなどで固定して接続したり、制御装置をハーネスなどの配線(計測線)で接続することを不要にでき、工数を少なくし接続に要する労力の低減、時間の削減を図ることが可能になる。   Therefore, according to the measurement terminal device A of the present embodiment, the cell voltage measurement terminals are fixedly connected to the electrode terminals 6 and 7 with Kapton tape or the like, and the control device is connected to a wiring such as a harness (measurement). It is possible to reduce the labor and time required for connection by reducing the number of man-hours.

また、本実施形態の計測端子装置Aにおいては、二次電池1の電極端子6、7に向けて基板21を横方向に移動しながら、挿入口22a、23aを介してセル電圧計測端子22、23の内部に電極端子6、7を嵌合させることができる。これにより、ワンタッチで容易にセル電圧計測端子22、23を電極端子6、7に接続することが可能になる。また、セル電圧計測端子22、23が略C形の環状に形成されていることで、セル電圧計測端子22、23を弾性変形させながら挿入口22a、23aからセル電圧計測端子22、23の内部に電極端子6、7を嵌合させることができ、セル電圧計測端子22、23で電極端子6、7をクランプ保持させ、確実且つ強固にセル電圧計測端子22、23を電極端子6、7に接続することが可能になる。   Further, in the measurement terminal device A of the present embodiment, the cell voltage measurement terminal 22, through the insertion ports 22a, 23a, while moving the substrate 21 laterally toward the electrode terminals 6, 7 of the secondary battery 1, The electrode terminals 6 and 7 can be fitted inside 23. As a result, the cell voltage measurement terminals 22 and 23 can be easily connected to the electrode terminals 6 and 7 with one touch. In addition, since the cell voltage measurement terminals 22 and 23 are formed in a substantially C-shaped ring shape, the cell voltage measurement terminals 22 and 23 are elastically deformed, and the insides of the cell voltage measurement terminals 22 and 23 are inserted from the insertion ports 22a and 23a. The electrode terminals 6 and 7 can be fitted to each other, the electrode terminals 6 and 7 are clamped and held by the cell voltage measurement terminals 22 and 23, and the cell voltage measurement terminals 22 and 23 are securely and firmly attached to the electrode terminals 6 and 7. It becomes possible to connect.

さらに、電極端子6、7とセル電圧計測端子22、23が嵌合すると、電極端子6、7の外面とセル電圧計測端子22、23の内面に形成された係合凸部29と係合凹部25が係合するため、より確実且つ強固にセル電圧計測端子22、23を電極端子6、7に接続することができる。   Further, when the electrode terminals 6 and 7 and the cell voltage measuring terminals 22 and 23 are fitted, the engaging convex portions 29 and the engaging concave portions formed on the outer surfaces of the electrode terminals 6 and 7 and the inner surfaces of the cell voltage measuring terminals 22 and 23 are fitted. Since 25 engages, the cell voltage measuring terminals 22 and 23 can be connected to the electrode terminals 6 and 7 more reliably and firmly.

また、本実施形態の計測端子装置Aにおいては、一対の電極端子6、7にそれぞれセル電圧計測端子22、23を嵌合させて接続すると、基板21に一体に設けられたサーミスタ24が電池缶5に接触する。基板21の配線19を介してサーミスタ24とコネクタ26が電気的に接続されているため、コネクタ26に配線を介して制御装置を接続することで、容易にセル電圧とともにセル温度を計測することが可能になる。   Further, in the measurement terminal device A of this embodiment, when the cell voltage measurement terminals 22 and 23 are fitted and connected to the pair of electrode terminals 6 and 7, respectively, the thermistor 24 provided integrally with the substrate 21 is a battery can. 5 is contacted. Since the thermistor 24 and the connector 26 are electrically connected via the wiring 19 of the substrate 21, it is possible to easily measure the cell temperature together with the cell voltage by connecting a control device to the connector 26 via the wiring. It becomes possible.

また、基板21の下面とサーミスタ24の間にスポンジ30が介装されているため、二次電池1の上面の所定位置に基板21を設置すると、スポンジ30の弾性力でサーミスタ24が電池缶5に圧接する。これにより、確実にサーミスタ24を電池缶5に接触させることができ、また、接触した状態で保持することができ、より確実且つ容易にセル温度を計測することが可能になる。   In addition, since the sponge 30 is interposed between the lower surface of the substrate 21 and the thermistor 24, when the substrate 21 is installed at a predetermined position on the upper surface of the secondary battery 1, the thermistor 24 is connected to the battery can 5 by the elastic force of the sponge 30. Press contact. As a result, the thermistor 24 can be reliably brought into contact with the battery can 5 and can be held in contact with each other, and the cell temperature can be measured more reliably and easily.

さらに、一対の電極端子6、7にそれぞれセル電圧計測端子22、23を嵌合させて接続すると、基板21に一体に設けられた容器電圧計測端子25が電池缶5に接続される。基板21の配線20を介して容器電圧計測端子25とコネクタ26が電気的に接続されているため、コネクタ26に配線を介して制御装置を接続することで、容易にセル電圧とともに容器電圧を計測することが可能になる。   Further, when the cell voltage measurement terminals 22 and 23 are fitted and connected to the pair of electrode terminals 6 and 7, respectively, the container voltage measurement terminal 25 provided integrally with the substrate 21 is connected to the battery can 5. Since the container voltage measuring terminal 25 and the connector 26 are electrically connected via the wiring 20 of the substrate 21, the container voltage can be easily measured together with the cell voltage by connecting the control device to the connector 26 via the wiring. It becomes possible to do.

また、注液口12に設けられた栓ボルト13を用いて容器電圧計測端子25を電池缶5に固定することができ、確実且つ強固に容器電圧計測端子25を電池缶5に接続することができる。   Further, the container voltage measurement terminal 25 can be fixed to the battery can 5 using the plug bolt 13 provided in the liquid injection port 12, and the container voltage measurement terminal 25 can be securely and firmly connected to the battery can 5. it can.

以上、本発明に係る計測端子装置の一実施形態について説明したが、本発明は上記の一実施形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。   As mentioned above, although one Embodiment of the measurement terminal device which concerns on this invention was described, this invention is not limited to said one Embodiment, It can change suitably in the range which does not deviate from the meaning.

例えば、本実施形態の計測端子装置Aは、セル電圧計測端子22、23が略C形の環状に形成され、計測端子装置Aを二次電池1の電極端子6、7に向けて横方向に移動しつつセル電圧計測端子22、23を電極端子6、7に嵌合させて接続するように構成されている。これに対し、本発明に係る計測端子装置は、図4に示すように、O形、すなわち開口を有しない環状のセル電圧計測端子31、32を基板21に一体に設けて構成してもよい。この場合には、二次電池1の電極端子6、7に向けて上下方向(下方)に移動しつつセル電圧計測端子31、32の内孔に電極端子6、7を挿入して嵌合させる。これにより、セル電圧計測端子31、32と電極端子6、7を接続することができる。   For example, in the measurement terminal device A of the present embodiment, the cell voltage measurement terminals 22 and 23 are formed in a substantially C-shaped annular shape, and the measurement terminal device A is laterally directed toward the electrode terminals 6 and 7 of the secondary battery 1. The cell voltage measuring terminals 22 and 23 are configured to be fitted and connected to the electrode terminals 6 and 7 while moving. On the other hand, as shown in FIG. 4, the measurement terminal device according to the present invention may be configured by integrally forming O-shaped, that is, annular cell voltage measurement terminals 31 and 32 having no opening, on the substrate 21. . In this case, the electrode terminals 6 and 7 are inserted and fitted into the inner holes of the cell voltage measurement terminals 31 and 32 while moving in the vertical direction (downward) toward the electrode terminals 6 and 7 of the secondary battery 1. . Thereby, the cell voltage measurement terminals 31 and 32 and the electrode terminals 6 and 7 can be connected.

また、このとき、図4に示すように、内周縁から突出する複数の被係合部として係止片31a、32aを備えてセル電圧計測端子31、32を形成し、また、電極端子6、7の外面に、軸線中心の周方向に延びる環状の係止溝33を被係合部と係合する係合部として形成しておくことが好ましい。この場合には、セル電圧計測端子31、32の内孔に電極端子6、7を挿入するとともにセル電圧計測端子31、32の係止片31a、32aを電極端子6、7の係止溝33に係合させることができる。これにより、ワンタッチで容易にセル電圧計測端子31、32を電極端子6、7に接続することが可能になるとともに、より確実且つ強固にセル電圧計測端子31、32と電極端子6、7を接続することが可能になる。   At this time, as shown in FIG. 4, the cell voltage measuring terminals 31 and 32 are formed by providing the locking pieces 31 a and 32 a as the plurality of engaged portions protruding from the inner peripheral edge, and the electrode terminals 6 and 32, It is preferable that an annular locking groove 33 extending in the circumferential direction about the axis is formed on the outer surface of 7 as an engaging portion that engages with the engaged portion. In this case, the electrode terminals 6 and 7 are inserted into the inner holes of the cell voltage measuring terminals 31 and 32, and the locking pieces 31 a and 32 a of the cell voltage measuring terminals 31 and 32 are inserted into the locking grooves 33 of the electrode terminals 6 and 7. Can be engaged. As a result, the cell voltage measurement terminals 31 and 32 can be easily connected to the electrode terminals 6 and 7 with one touch, and the cell voltage measurement terminals 31 and 32 and the electrode terminals 6 and 7 can be connected more reliably and firmly. It becomes possible to do.

さらに、このように二次電池1の電極端子6、7に向けて上下方向(下方)に移動しつつセル電圧計測端子31、32の内孔に電極端子6、7を挿入して嵌合させるように構成した場合には、複数の二次電池のセル電圧、セル温度、容器電圧をそれぞれ計測するための複数の一対のセル電圧計測端子、複数のサーミスタ、複数の容器電圧計測端子、複数のコネクタを一つの基板にまとめて形成してもよい。この場合には、電池モジュールや組電池を構成する複数の二次電池の全てに対し、複数の一対のセル電圧計測端子、複数のサーミスタ、複数の容器電圧計測端子、複数のコネクタをまとめて設けた一つの基板を下方に移動して、各二次電池の電極端子とこれに対応するセル電圧計測端子を嵌合させて接続することによって、計測端子装置を取り付けることが可能になる。   Furthermore, the electrode terminals 6 and 7 are inserted and fitted into the inner holes of the cell voltage measurement terminals 31 and 32 while moving in the vertical direction (downward) toward the electrode terminals 6 and 7 of the secondary battery 1 in this way. When configured as described above, a plurality of pairs of cell voltage measuring terminals, a plurality of thermistors, a plurality of container voltage measuring terminals, a plurality of container voltages for measuring cell voltages, cell temperatures, and container voltages of a plurality of secondary batteries, respectively. The connectors may be formed on a single substrate. In this case, a plurality of pairs of cell voltage measurement terminals, a plurality of thermistors, a plurality of container voltage measurement terminals, and a plurality of connectors are collectively provided for all of the plurality of secondary batteries constituting the battery module or the assembled battery. The measurement terminal device can be attached by moving the single substrate downward and fitting and connecting the electrode terminals of the respective secondary batteries and the corresponding cell voltage measurement terminals.

1 二次電池(電池セル)
2 正極板
2a タブ
3 負極板
3a タブ
4 電極体
5 電池缶
6 電極端子
7 電極端子
8 本体部
9 蓋部
10 絶縁スリーブ
11 セパレータ
12 注液口
13 栓ボルト
15 係合凹部
16 バスバー
17 配線
18 配線
19 配線
20 配線
21 基板
21a 一側端部
21b 他側端部
22 セル電圧計測端子
22a 挿入口
23 セル電圧計測端子
23a 挿入口
24 サーミスタ(温度計測子)
25 容器電圧計測端子
26 コネクタ
27 凹所
28 凹所
29 係合凸部
30 スポンジ(弾性体)
31 セル電圧計測端子
31a 係止片
32 セル電圧計測端子
32a 係止片
A 計測端子装置
O1 軸線
1 Secondary battery (battery cell)
2 Positive electrode plate 2a Tab 3 Negative electrode plate 3a Tab 4 Electrode body 5 Battery can 6 Electrode terminal 7 Electrode terminal 8 Body portion 9 Lid portion 10 Insulating sleeve 11 Separator 12 Injection port 13 Plug bolt 15 Engaging recess 16 Bus bar 17 Wiring 18 Wiring 19 Wiring 20 Wiring 21 Substrate 21a One end 21b The other end 22 Cell voltage measurement terminal 22a Insertion port 23 Cell voltage measurement terminal 23a Insertion port 24 Thermistor (temperature measuring element)
25 Container voltage measurement terminal 26 Connector 27 Recess 28 Recess 29 Engaging protrusion 30 Sponge (elastic body)
31 Cell voltage measuring terminal 31a Locking piece 32 Cell voltage measuring terminal 32a Locking piece A Measuring terminal device O1 Axis

Claims (7)

配線が形成された基板と、
前記配線に接続して前記基板に設けられ、二次電池の正負一対の電極端子と接続して前記一対の電極端子の電圧を計測するための一対のセル電圧計測端子と、
前記基板に設けられ、前記一対のセル電圧計測端子と電気的に接続したコネクタとを備えていることを特徴とする計測端子装置。
A substrate on which wiring is formed;
A pair of cell voltage measuring terminals provided on the substrate connected to the wiring, and connected to a pair of positive and negative electrode terminals of a secondary battery to measure a voltage of the pair of electrode terminals;
A measurement terminal device comprising a connector provided on the substrate and electrically connected to the pair of cell voltage measurement terminals.
請求項1記載の計測端子装置において、
前記一対のセル電圧計測端子は、軸線方向に延びる挿入口を側部に備えて略C字状に形成され、前記軸線方向を前記基板に直交する上下方向に向け、且つ前記挿入口を前記基板の一側端部側に配し、前記基板の基板面に沿う横方向外側に向けて、前記基板に一体に設けられていることを特徴とする計測端子装置。
The measurement terminal device according to claim 1,
The pair of cell voltage measurement terminals are formed in a substantially C shape with an insertion opening extending in the axial direction at a side portion, the axial direction is directed in a vertical direction perpendicular to the substrate, and the insertion opening is directed to the substrate. A measurement terminal device, which is provided on the one side end portion side and provided integrally with the substrate toward a laterally outer side along the substrate surface of the substrate.
請求項1または請求項2に記載の計測端子装置において、
前記一対のセル電圧計測端子は、対応する前記電極端子の外周面に形成された係合部と係合する被係合部が、内周面に形成されていることを特徴とする計測端子装置。
In the measurement terminal device according to claim 1 or 2,
The pair of cell voltage measuring terminals has an engaged portion that engages with an engaging portion formed on the outer peripheral surface of the corresponding electrode terminal formed on the inner peripheral surface. .
請求項1から請求項3のいずれか一項に記載の計測端子装置において、
前記配線に接続して前記基板に設けられ、前記一対のセル電圧端子が前記一対の電極端子に嵌合した状態で前記二次電池の電池缶に接触して前記二次電池の温度を計測するための温度計測子を備えていることを特徴とする計測端子装置。
In the measurement terminal device according to any one of claims 1 to 3,
The temperature of the secondary battery is measured by contacting the battery can of the secondary battery with the pair of cell voltage terminals fitted to the pair of electrode terminals, connected to the wiring and provided on the substrate. A measuring terminal device comprising a temperature gauge for the purpose.
請求項4記載の計測端子装置において、
前記温度計測子は、前記基板の下面との間に弾性体が介装され、前記基板の下面から下方に向けて斜設されていることを特徴とする計測端子装置。
The measurement terminal device according to claim 4,
An elastic body is interposed between the temperature measuring element and the lower surface of the substrate, and the temperature measuring device is provided obliquely downward from the lower surface of the substrate.
請求項1から請求項5のいずれか一項に記載の計測端子装置において、
前記配線に接続して前記基板に設けられ、前記一対のセル電圧端子が前記一対の電極端子に嵌合した状態で前記二次電池の電池缶に接続し前記電池缶の電圧を計測するための容器電圧計測端子を備えていることを特徴とする計測端子装置。
In the measurement terminal device according to any one of claims 1 to 5,
Connected to the battery can of the secondary battery with the pair of cell voltage terminals fitted to the pair of electrode terminals and connected to the wiring to measure the voltage of the battery can A measuring terminal device comprising a container voltage measuring terminal.
請求項6記載の計測端子装置において、
前記容器電圧計測端子が、前記電池缶に形成されて内部に電解液を注入するための注液口を閉塞する栓ボルトによって、前記電池缶に固定して接続されることを特徴とする計測端子装置。
The measurement terminal device according to claim 6,
The container voltage measuring terminal is fixedly connected to the battery can by a plug bolt that is formed in the battery can and closes a liquid injection port for injecting an electrolyte into the battery can. apparatus.
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