JP2000077056A - Power source device and connecting method of lead-out lead wire - Google Patents
Power source device and connecting method of lead-out lead wireInfo
- Publication number
- JP2000077056A JP2000077056A JP10246399A JP24639998A JP2000077056A JP 2000077056 A JP2000077056 A JP 2000077056A JP 10246399 A JP10246399 A JP 10246399A JP 24639998 A JP24639998 A JP 24639998A JP 2000077056 A JP2000077056 A JP 2000077056A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- lead wire
- positive electrode
- cell
- power supply
- 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.)
- Granted
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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電気自動車の駆動
モータ等の装置本体に対して大電流を出力する電源装置
及びこの電源装置を構成する各単電池に電圧検出線等の
引き出し導線を接続する引き出し導線の接続方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device for outputting a large current to a device main body such as a drive motor of an electric vehicle, and a lead wire such as a voltage detection line connected to each cell constituting the power supply device. The present invention relates to a method for connecting a lead wire to be connected.
【０００２】[0002]
【従来の技術】電気自動車等に積載され車両駆動用のモ
ータに対し大電流を供給する電源装置は、複数個の単電
池が直列に接続された組電池を内蔵して構成されてい
る。2. Description of the Related Art A power supply device mounted on an electric vehicle or the like and supplying a large current to a motor for driving a vehicle includes a built-in battery in which a plurality of cells are connected in series.
【０００３】従来の電源装置は、組電池を構成する単電
池間の接続が接続導体（以下、バスバーと称する。）を
各単電池の端子部にネジ止めすることにより行われてい
た。具体的には、従来の電源装置は、一の単電池の正極
部にネジ止めされたバスバーを他の単電池の負極部にネ
ジ止めすることにより各単電池が電気的に接続されて構
成されていた。電池間接続用のバスバーは、各単電池の
正極部又は負極部に設けられたネジ穴、或いは正極部又
は負極部に溶接されたネジ穴のついた部材にネジ止めさ
れていた。[0003] In the conventional power supply device, the connection between the cells constituting the assembled battery is performed by screwing a connection conductor (hereinafter, referred to as a bus bar) to a terminal portion of each cell. Specifically, a conventional power supply device is configured such that each cell is electrically connected by screwing a bus bar screwed to a positive electrode part of one cell to a negative electrode part of another cell. I was The bus bar for connection between batteries has been screwed to a screw hole provided in a positive electrode portion or a negative electrode portion of each unit cell, or to a member having a screw hole welded to the positive electrode portion or the negative electrode portion.
【０００４】また、電源装置は、電気自動車等に積載す
る場合に、外部出力用のケーブルによって組電池を構成
する単電池のうち終端の単電池と電気自動車等とが電気
的に接続されている。従来の電源装置は、外部出力用の
ケーブルが組電池の終端の単電池の正極部又は負極部に
ネジ止めできるように端末処理が施され終端の単電池に
ネジ止めされていた。[0004] When the power supply device is mounted on an electric vehicle or the like, the terminal cell of the cells constituting the battery pack is electrically connected to the electric vehicle or the like by an external output cable. . In a conventional power supply device, terminal processing is performed so that an external output cable can be screwed to a positive electrode portion or a negative electrode portion of a cell at the end of the assembled battery, and the cable is screwed to the cell at the end.
【０００５】さらに、電源装置においては、組電池を構
成する各単電池の状態を観察する等のために各単電池ご
とに電圧検出線等の引き出し導線を接続する場合があ
る。従来の電源装置においては、上述した外部出力用の
ケーブルと同様に、引き出し導線にもネジ止めできるよ
うに端末処理が施され、各単電池の正極部又は負極部に
ネジ止めによって接続されていた。Further, in the power supply device, a lead wire such as a voltage detection line may be connected to each cell in order to observe the state of each cell constituting the assembled battery. In the conventional power supply device, similarly to the above-mentioned cable for external output, terminal processing is performed so that the lead wire can also be screwed, and connected to the positive electrode portion or the negative electrode portion of each unit cell by screwing. .
【０００６】従来の電源装置は、上述したケーブルや引
き出し導線のネジ止めがネジ穴加工やタップ立て等の処
理が電池本体よりも容易なバスバー部分において行われ
る場合が多い。このため、従来の電源装置は、複数個の
単電池がバスバーにより電気的に接続された後に、ケー
ブルや引き出し導線等のネジ止めが行われてが接続され
ていた。[0006] In the conventional power supply device, the above-mentioned screwing of the cable or the lead wire is often performed in a bus bar portion where processing such as screw hole processing or tapping is easier than that of the battery body. For this reason, in the conventional power supply device, after a plurality of cells are electrically connected by the bus bar, cables and lead wires are screwed and connected.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、従来の
電源装置は、車両等に積載して使用した場合に、上述し
たようにネジ止めされた外部出力用のケーブルや引き出
し導線を単電池に接続するネジ部分が振動等によって緩
んでしまう場合がある。従来の電源装置においては、単
電池と引き出し導線等とを接続するネジが緩むと接触抵
抗が増大して長期的に安定した接続の信頼性を得ること
が難しく、接続の信頼性が低いという問題があった。However, when the conventional power supply device is mounted on a vehicle or the like and used, the external output cable or the lead wire screwed as described above is connected to the unit cell. The screw part may be loosened by vibration or the like. In the conventional power supply device, if the screw connecting the cell and the lead wire is loosened, the contact resistance increases, and it is difficult to obtain stable connection reliability over a long period of time, and the connection reliability is low. was there.
【０００８】また、従来の電源装置においては、接続さ
れる単電池又はバスバー側及び接続する引き出し導線側
においてネジ止めするための様々な処理、例えば線材の
端末処理や単電池又はバスバー側のネジ穴加工等を施す
必要や、線材を取り付けるスペースを単電池等の側で確
保する必要があった。従来の電源装置においては、上述
したような端末処理等や、単電池等と引き出し導線等と
をネジ止めする場合のコストや作業者の負担が増加する
等の問題があった。Also, in the conventional power supply device, various processes for screwing on the unit cell or bus bar side to be connected and the lead wire side to be connected, for example, terminal treatment of the wire material or screw holes on the unit cell or bus bar side It is necessary to perform processing and the like, and it is necessary to secure a space for attaching a wire on the side of the unit cell or the like. In the conventional power supply device, there were problems such as the above-described terminal processing and the like, and the cost and the burden on the operator in the case of screwing the unit cell or the like and the lead wire or the like increased.
【０００９】さらに、従来の電源装置は、バスバーによ
り各単電池を接続後に引き出し導線等をネジ止めする場
合に、数本分の単電池の電位が引き出し導線等にかか
り、配線作業において作業者が感電する危険性が高くな
り、作業上の安全性の面で問題があった。Further, in the conventional power supply device, when the lead wires and the like are screwed after connecting the individual cells with the bus bar, the potential of several cells is applied to the lead wires and the like, and an operator in the wiring work is required. The risk of electric shock increased, and there was a problem in terms of work safety.
【００１０】そこで、本発明は、各単電池の電極と引き
出し導線との接続信頼性が高く、配線作業の際の安全性
が改善された電源装置及び引き出し導線の接続方法を提
供することを目的にするものである。Accordingly, an object of the present invention is to provide a power supply device and a method of connecting a lead wire, which have high connection reliability between an electrode of each unit cell and a lead wire and have improved safety during wiring work. It is to be.
【００１１】[0011]
【課題を解決するための手段】上述した目的を達成する
本発明に係る電源装置は、正極側及び／又は負極側に円
筒状電極端子が取り付けられた複数の単電池が組み合わ
されて構成される組電池と、組電池を構成する単電池を
直列に接続する電池間用接続導体と、組電池の終端の単
電池と外部出力端子に接続されたケーブルとを接続する
終端用接続導体とを備えて構成され、終端用接続導体の
一端側に単電池の正極側及び負極側に取り付けられた円
筒状電極端子に接続される円筒部が形成されるととも
に、他端側に平板状部が波状に折りたたまれかつ絞り込
まれて形成されている。終端用接続導体は、絞り込まれ
て形成された他端側と外部出力端子に接続されたケーブ
ルとがスリーブ型の圧着端子に通され、かしめられるこ
とによりケーブルと接続されている。A power supply unit according to the present invention that achieves the above-mentioned object is constituted by combining a plurality of cells each having a cylindrical electrode terminal attached to a positive electrode and / or a negative electrode. An assembled battery, an inter-cell connecting conductor for connecting cells constituting the assembled battery in series, and a terminating connecting conductor for connecting a cell connected to the terminal of the assembled battery and a cable connected to an external output terminal. A cylindrical portion connected to the cylindrical electrode terminals attached to the positive electrode side and the negative electrode side of the unit cell is formed at one end of the connection conductor for termination, and a flat plate-like portion is formed in a wavy shape at the other end. It is folded and narrowed down. The terminating connection conductor is connected to the cable by passing the other end formed by being narrowed down and the cable connected to the external output terminal through the sleeve-type crimp terminal and crimping.
【００１２】また、本発明に係る電源装置は、上述した
終端用接続導体の一端側に単電池の正極側及び／又は負
極側に取り付けられた円筒状電極端子に接続される円筒
部が形成されるとともに、他端側に平板状部が形成さ
れ、この平板状部の一辺に沿ってケーブルが挿入される
チューブ状部が形成されている。終端用接続導体は、チ
ューブ状部の外側から少なくとも１個の圧着部材でかし
められることによりケーブルと接続されている。Further, in the power supply device according to the present invention, a cylindrical portion connected to the cylindrical electrode terminals attached to the positive electrode side and / or the negative electrode side of the unit cell is formed at one end of the above-described termination connection conductor. In addition, a flat portion is formed on the other end side, and a tube portion into which a cable is inserted is formed along one side of the flat portion. The termination connection conductor is connected to the cable by being caulked with at least one crimping member from the outside of the tubular portion.
【００１３】本発明に係る引き出し導線の接続方法は、
単電池の正極側及び負極側に取り付けられた円筒状電極
端子と引き出し導線又は引き出し導線が接続された棒状
の圧着端子とを溶接電極によって上記円筒状部材の内側
と外側から挟み込んで加圧することにより上記単電池の
各電極に引き出し導線を接続する。A method for connecting a lead wire according to the present invention is as follows.
By pressing a cylindrical electrode terminal attached to the positive electrode side and the negative electrode side of the unit cell and a lead-shaped lead wire or a rod-shaped crimp terminal connected to the lead-out wire from the inside and outside of the cylindrical member with a welding electrode, A lead wire is connected to each electrode of the unit cell.
【００１４】上述した構成を有する本発明に係る電源装
置によれば、終端用接続導体に単電池の円筒状電極端子
と同様の円筒部が形成されるため、終端用接続導体に単
電池が嵌合されかつその嵌合部において内側と外側から
加圧することにより溶接可能とされる。本発明に係る電
源装置は、終端用接続導体と単電池とが上述したように
溶接可能とされることにより、終端用接続導体に接続さ
れた外部出力用のケーブルとの接続の信頼性が向上す
る。また、本発明に係る引き出し導線の接続方法によれ
ば、複数の単電池が電気的に接続される前の各単電池と
引き出し導線又は引き出し導線が接続された棒状圧着端
子とが溶接により接続されるため、煩雑な配線作業によ
る感電事故の防止を可能とする。According to the power supply device of the present invention having the above-described structure, since the cylindrical portion similar to the cylindrical electrode terminal of the cell is formed in the terminal connecting conductor, the cell is fitted in the terminal connecting conductor. They can be welded together by applying pressure from inside and outside at the fitting portion. The power supply device according to the present invention improves the reliability of connection with the external output cable connected to the termination connection conductor by allowing the termination connection conductor and the unit cell to be weldable as described above. I do. In addition, according to the method for connecting a lead wire according to the present invention, each cell and the lead wire or the rod-shaped crimp terminal to which the lead wire is connected are connected by welding before a plurality of cells are electrically connected. Therefore, it is possible to prevent an electric shock accident due to complicated wiring work.
【００１５】[0015]
【発明の実施の形態】以下、本発明に係る電源装置及び
引き出し導線の接続方法の具体的な実施の形態について
図面を参照しながら詳細に説明する。電源装置１は、図
１及び図２に示すように、複数個の単電池２が組み合わ
されてなる組電池３と、組電池３の両端子側にはめ込ま
れる電池保持枠４とを備えて構成される。なお、本実施
の形態においては、電源装置１を電気自動車に積載さ
れ、車両を駆動するモータの駆動用電源として使用され
るものとして説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of a power supply device and a method of connecting a lead wire according to the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 and 2, the power supply device 1 includes an assembled battery 3 formed by combining a plurality of unit cells 2, and a battery holding frame 4 fitted to both terminal sides of the assembled battery 3. Is done. In the present embodiment, the power supply device 1 is described as being mounted on an electric vehicle and used as a power supply for driving a motor that drives the vehicle.
【００１６】単電池２は、図３に示すように、円筒状の
外装缶５の一端側に正極端子を兼ねる正極カバー６が取
り付けられるとともに、他端側に負極端子を兼ねる負極
カップ７が取り付けられている。正極カバー６は、円形
の平板状部材の中央部が立ち上がって円筒状に形成さ
れ、外装缶５の正極側の開口部に組み付けられている。
負極カップ７は、円筒状に形成され、外装缶５の負極側
の中央部に取り付けられる。As shown in FIG. 3, the unit cell 2 has a positive electrode cover 6 also serving as a positive electrode terminal attached to one end of a cylindrical outer can 5, and a negative electrode cup 7 also serving as a negative electrode terminal attached to the other end. Have been. The positive electrode cover 6 is formed in a cylindrical shape with the central part of a circular plate-shaped member rising up, and is assembled to the opening on the positive electrode side of the outer can 5.
The negative electrode cup 7 is formed in a cylindrical shape, and is attached to the center of the outer can 5 on the negative electrode side.
【００１７】組電池３は、図２に示すように、複数個の
単電池２が正極と負極とが交互に隣接するように配置さ
れている。組電池３は、図１に示すように、各単電池２
の正極カバー６及び負極カップ７が電池保持枠４に形成
された孔部８内に位置するように配置され、保持されて
いる。As shown in FIG. 2, the assembled battery 3 includes a plurality of cells 2 arranged such that a positive electrode and a negative electrode are alternately adjacent to each other. The assembled battery 3 includes, as shown in FIG.
The positive electrode cover 6 and the negative electrode cup 7 are arranged and held so as to be located in a hole 8 formed in the battery holding frame 4.
【００１８】組電池３は、図１及び図２に示すように、
各単電池２が電池間用バスバー９によって接続される。
電池間用バスバー９は、中央部が一段高く形成された平
板状の部材であり、中央部よりも低く位置する両端側に
単電池２の正極カバー６又は負極カップ７が接続される
バスバー円筒部１０がそれぞれ形成されている。The battery pack 3 is, as shown in FIGS.
Each unit cell 2 is connected by an inter-cell bus bar 9.
The inter-battery bus bar 9 is a plate-shaped member having a central portion formed one step higher, and a bus bar cylindrical portion to which the positive electrode cover 6 or the negative electrode cup 7 of the unit cell 2 is connected at both ends positioned lower than the central portion. 10 are formed respectively.
【００１９】電池間用バスバー９は、組電池３を構成す
る複数の単電池２のうち隣接する一方の単電池２の正極
カバー６と他方の単電池２の負極カップ７とがバスバー
円筒部１０にはめ込まれることにより複数個の単電池２
を直列に接続する。このように、組電池３は、複数の単
電池２が電池間用バスバー９によって直列に接続されて
構成される。なお、単電池２の正極カバー６又は負極カ
ップ７と電池缶用バスバー９とは、後述するようにバス
バー円筒部１０内に正極カバー６又は負極カップ７がは
め込まれた後に溶接されて接続される。The inter-battery bus bar 9 includes a bus bar cylindrical portion 10 formed by the positive electrode cover 6 of one adjacent unit cell 2 and the negative electrode cup 7 of the other unit cell 2 among a plurality of unit cells 2 constituting the assembled battery 3. A plurality of cells 2
Are connected in series. As described above, the assembled battery 3 is configured by connecting the plurality of cells 2 in series by the inter-cell bus bar 9. In addition, the positive electrode cover 6 or the negative electrode cup 7 of the unit cell 2 and the busbar 9 for a battery can are connected by welding after the positive electrode cover 6 or the negative electrode cup 7 is fitted into the busbar cylindrical portion 10 as described later. .
【００２０】組電池３は、図１に示すように、直列に接
続された単電池２の両端、すなわち終端の単電池２の正
極カバー６又は負極カップ７に終端用バスバー１１が接
続される。終端用バスバー１１は、組電池３と図示を省
略する外部出力端子に接続されたケーブル１２とを接続
する。組電池３は、ケーブル１２によってを介して電気
自動車の駆動源であるモータと接続される。As shown in FIG. 1, the battery pack 3 has a terminal bus bar 11 connected to both ends of the unit cells 2 connected in series, that is, to the positive electrode cover 6 or the negative electrode cup 7 of the terminal cell 2 at the end. The terminal bus bar 11 connects the battery pack 3 and a cable 12 connected to an external output terminal (not shown). The battery pack 3 is connected via a cable 12 to a motor that is a drive source of an electric vehicle.
【００２１】ケーブル１２は、銅線であり、可撓性に富
み絶縁部材により被覆されている。なお、電源装置１
は、上述したようなケーブル１２に代えて銅製の棒材等
を終端用バスバー１１と外部出力端子との接続に使用し
てもよい。The cable 12 is a copper wire, and is covered with a highly flexible insulating member. The power supply 1
For example, instead of the cable 12 described above, a copper bar or the like may be used for connection between the terminal bus bar 11 and the external output terminal.
【００２２】終端用バスバー１１は、図４（ａ）に示す
ように、一端側に終端の単電池２の正極カバー６又は負
極カップ７に接続されるバスバー円筒部１０が形成され
る。また、終端用バスバー１１は、図４（ｂ）及び
（ｃ）に示すように、他端側が波状に折りたたまれた波
状部１１ａと、波状部１１ａの端部が絞り込まれてなる
接続部１１ｂにより形成されている。終端用バスバー１
１は、波状部１１ａと接続部１１ａとで形成され他端側
がケーブル１２と接続されることにより、ケーブル１２
との接続部において大きな表面積が確保できるととも
に、波状部１１ａがフィンとして作用するため、放電時
において効率よく放熱し得る。As shown in FIG. 4 (a), the terminal busbar 11 has a busbar cylindrical portion 10 connected to the positive electrode cover 6 or the negative electrode cup 7 of the terminal cell 2 at one end. Further, as shown in FIGS. 4B and 4C, the terminal bus bar 11 includes a wavy portion 11a having the other end folded in a wavy shape, and a connecting portion 11b formed by narrowing the end of the wavy portion 11a. Is formed. End busbar 1
1 is formed by a wavy portion 11a and a connection portion 11a, and the other end is connected to the cable 12 so that the cable 12
A large surface area can be ensured at the connection portion with the fins, and the corrugated portion 11a acts as a fin, so that heat can be efficiently dissipated during discharge.
【００２３】電源装置１は、図１に示すように、終端用
バスバー１１の接続部１１ｂがスリーブ型圧着端子１３
の一端側に挿入されるとともに、ケーブル１２がスリー
ブ型圧着端子１３の他端側に挿入される。電源装置１
は、スリーブ型圧着端子１３の終端用バスバー１１の接
続部１１ａとケーブル１２とが挿入された部分がそれぞ
れかしめられることにより、終端用バスバー１１とケー
ブル１２とが電気的に接続される。As shown in FIG. 1, in the power supply device 1, the connection portion 11b of the terminal bus bar 11 is
And the cable 12 is inserted into the other end of the sleeve-type crimp terminal 13. Power supply 1
The crimping terminal 13 of the sleeve-type crimping terminal 13 is electrically connected to the terminal bus bar 11 and the cable 12 by caulking the portion where the connection portion 11a of the terminal bus bar 11 and the cable 12 are inserted.
【００２４】また、電源装置１は、終端の単電池２と外
部出力用のケーブル１２とが、図５（ａ）及び（ｂ）に
示すような終端用バスバー２０によって接続されるもの
でもよい。終端用バスバー２０は、一端側にバスバー円
筒部１０が形成されるとともに、他端側の平板状部の一
辺に沿ってケーブル１２が挿通されるチューブ状部２１
が形成される。終端用バスバー２０は、ケーブル１２が
挿通されたチューブ状部２１の外側にコネクタ２２を嵌
合させてチューブ状部２１をかしめることにより、ケー
ブル１２を圧着する。終端用バスバー２０は、チューブ
状部２１が形成されることによりケーブル１２との接続
部においける表面積が大きくなり、電源装置１の放電時
において効率よく放熱し得る。なお、終端用バスバー２
０においては、ケーブル１２を圧着するコネクタ２２が
少なくとも１個使用されていればよい。The power supply device 1 may be configured such that the terminal cell 2 and the external output cable 12 are connected by a terminal bus bar 20 as shown in FIGS. 5 (a) and 5 (b). The terminal busbar 20 has a tube-shaped portion 21 in which the busbar cylindrical portion 10 is formed on one end side and the cable 12 is inserted along one side of the flat plate-shaped portion on the other end side.
Is formed. The terminal busbar 20 crimps the cable 12 by crimping the tubular portion 21 by fitting the connector 22 to the outside of the tubular portion 21 through which the cable 12 is inserted. By forming the tubular portion 21, the terminal busbar 20 has a large surface area at the connection portion with the cable 12, and can efficiently radiate heat when the power supply device 1 discharges. In addition, the termination bus bar 2
At 0, it is sufficient that at least one connector 22 for crimping the cable 12 is used.
【００２５】電源装置１は、上述した構成を有する終端
用バスバー１１、２０によって外部出力用のケーブル１
２が接続されることにより、終端用バスバー１１、２０
に形成されたバスバー円筒部１０に終端の単電池２の正
極カバー６又は負極カップ７が溶接可能とされる。この
ため、電源装置１は、終端の単電池と外部出力用のケー
ブル１２との接続がネジ止めによる接続の如く電気自動
車に積載した際に生じる振動等により緩むことが無く、
高い信頼性を得ることができる。また、電源装置１は、
単電池２側等にネジ穴加工やネジ締め等の工程が不要と
されるためコストを削減できるとともに、製造上の負担
が減少する。The power supply device 1 is connected to the external output cable 1 by the terminating bus bars 11 and 20 having the above-described configuration.
2 is connected to the terminal busbars 11 and 20.
The positive electrode cover 6 or the negative electrode cup 7 of the terminal cell 2 can be welded to the bus bar cylindrical portion 10 formed at the end. For this reason, the power supply device 1 does not loosen due to vibration or the like that occurs when the connection between the terminal cell and the external output cable 12 is mounted on the electric vehicle, such as by screwing, and the like.
High reliability can be obtained. In addition, the power supply 1
Since steps such as screw hole processing and screw tightening are not required on the unit cell 2 side or the like, the cost can be reduced and the burden on manufacturing is reduced.
【００２６】上述したような構成を有する電源装置１
は、図１に示すように、組電池３を構成する各単電池２
の正極カバー６或いは負極カップ７に、終端の単電池２
については正極カバー６及び負極カップ７に電圧検出線
１４が接続される。電圧検出線１４は、銅線がビニール
等の絶縁部材によって被覆されたものであり、各単電池
２の出力電圧を検出する。電源装置１は、電圧検出線１
４によって検出された各単電池２の出力電圧が図示を省
略するコントローラ基板に送られ、各単電池２に異常が
ないか等が判断される。The power supply device 1 having the above configuration
Are the cells 2 constituting the assembled battery 3 as shown in FIG.
The terminal cell 2 in the positive electrode cover 6 or the negative electrode cup 7
The voltage detection line 14 is connected to the positive electrode cover 6 and the negative electrode cup 7. The voltage detection wire 14 is a copper wire covered with an insulating member such as vinyl, and detects the output voltage of each cell 2. The power supply 1 has a voltage detection line 1
The output voltage of each cell 2 detected by 4 is sent to a controller board (not shown), and it is determined whether or not each cell 2 has an abnormality.
【００２７】電源装置１は、電池缶用バスバー９によっ
て各単電池２が直列に接続される前に、電圧検出線１４
が正極カバー６又は負極カップ７に溶接されて接続され
る。以下、電圧検出線１４を各単電池２の正極カバー６
又は負極カップ７に接続する方法について説明する。The power supply 1 is connected to the voltage detection line 14 before the cells 2 are connected in series by the battery can bus bar 9.
Is welded and connected to the positive electrode cover 6 or the negative electrode cup 7. Hereinafter, the voltage detection line 14 is connected to the positive electrode cover 6 of each cell 2.
Alternatively, a method of connecting to the negative electrode cup 7 will be described.
【００２８】電圧検出線１４は、単電池２に接続される
前に、接続端側のビニール被覆が数ｍｍ、例えば断面積
が０．３ｍｍ2の銅線である電圧検出線１４の場合、１
ｍｍ乃至２ｍｍ程度剥がされて銅線を露出させる。Before the voltage detection line 14 is connected to the cell 2, if the voltage detection line 14 is a copper wire having a connection end with a vinyl coating of several mm, for example, a cross-sectional area of 0.3 mm 2 ,
The copper wire is exposed by being peeled off by about 2 mm to 2 mm.
【００２９】電源装置１は、図６に示すように、単電池
２の正極側に取り付けられた正極カバー６が円筒状に形
成されているため、銅線が露出した電圧検出線１４の一
端と単電池２の正極カバー６とが正極カバー６の内側と
外側から溶接電極１５によって挟み込まれる。溶接電極
１５は、正極カバー６の内側にクロム銅電極１５ａが配
設され、電圧検出線１４側にタングステン電極１５ｂが
配設される。溶接電極１５は、タングステン電極１５ｂ
の発熱を利用して電圧検出線１４を正極カバー６に溶接
している。As shown in FIG. 6, the power supply device 1 has the positive electrode cover 6 attached to the positive electrode side of the unit cell 2 formed in a cylindrical shape. The positive electrode cover 6 of the unit cell 2 is sandwiched by the welding electrodes 15 from inside and outside of the positive electrode cover 6. The welding electrode 15 has a chromium copper electrode 15a disposed inside the positive electrode cover 6 and a tungsten electrode 15b disposed on the voltage detection line 14 side. The welding electrode 15 is a tungsten electrode 15b
The voltage detection wire 14 is welded to the positive electrode cover 6 by utilizing the heat generated by the above.
【００３０】電圧検出線１４と単電池２の正極カバー６
とは、溶接電極１５により挟み込まれた後に１００Ｎ乃
至２００Ｎ（１０ｋｇｆ乃至２０ｋｇｆ）程度の力で図
６中矢印Ａ1方向及び矢印Ａ2方向に加圧される。このと
き、電圧検出線１４と溶接電極１５との重なりは、少な
すぎると銅線が融ける場合があり、多すぎると接合がう
まくいかない場合があるため１ｍｍ程度が適当である。
電圧検出線１４と溶接電極１５とは、重なりが１ｍｍよ
り長い場合、溶接電極１５の容量を上げれば溶接は可能
であるが、電圧検出線１４を接続する場合、溶接部分に
流れる電流値が小さいので、やはり１ｍｍ程度が適当で
ある。The voltage detection line 14 and the positive electrode cover 6 of the cell 2
And it is pressurized to 100N to 200 N (10 kgf to 20 kgf) in FIG. 6 in the order of the force arrow A 1 direction and the arrow A 2 direction after sandwiched by welding electrodes 15. At this time, the overlap between the voltage detection wire 14 and the welding electrode 15 is appropriately about 1 mm because the copper wire may be melted if it is too small, and the joining may not be successful if it is too large.
When the voltage detection line 14 and the welding electrode 15 have an overlap of more than 1 mm, welding is possible if the capacity of the welding electrode 15 is increased, but when the voltage detection line 14 is connected, the current value flowing through the welding portion is small. Therefore, about 1 mm is appropriate.
【００３１】電源装置１においては、電圧検出線１４を
正極カバー６に直接溶接電極１５によって接続した場
合、電圧検出線１４が動くと溶接された部分の線材が破
断するおそれがある。このため、電源装置１は、電圧検
出線１４の一部に接着剤等の樹脂コーティングが施さ
れ、溶接部の線材が動かないように電池保持枠４に固定
され、線材の破断が防止される。In the power supply device 1, when the voltage detection wire 14 is directly connected to the positive electrode cover 6 by the welding electrode 15, if the voltage detection wire 14 moves, the wire at the welded portion may be broken. For this reason, the power supply device 1 is provided with a resin coating such as an adhesive on a part of the voltage detection wire 14 and is fixed to the battery holding frame 4 so that the wire at the welded portion does not move, thereby preventing the wire from being broken. .
【００３２】また、電源装置１は、上述したように、電
圧検出線１４を直接単電池２の正極カバー６に溶接せず
に、図７に示すように、棒状圧着端子１６を介して正極
カバー６に溶接してもよい。 棒状圧着端子１６は、一
端に導線が露出した電圧検出線１４が接続されるととも
に、他端が正極カバー６に押し当てられ溶接電極１５に
よって溶接される。Further, as described above, the power supply device 1 does not directly weld the voltage detection wire 14 to the positive electrode cover 6 of the unit cell 2 but, as shown in FIG. 6 may be welded. The rod-shaped crimp terminal 16 is connected to the voltage detection wire 14 having a conductive wire exposed at one end, and the other end is pressed against the positive electrode cover 6 and welded by the welding electrode 15.
【００３３】電源装置１は、図７に示すように、正極カ
バー６側に配設されたクロム銅電極１５ａと棒状圧着端
子１６側に配設されたタングステン電極１５ｂによって
図７中矢印Ａ1方向及び矢印Ａ2方向に加圧されて溶接さ
れる。The power supply unit 1, as shown in FIG. 7, FIG. 7 in the arrow A 1 direction by arranged tungsten electrodes 15b to chromium copper electrode 15a and the rod crimping terminal 16 side disposed in the positive electrode cover 6 side and it is welded under pressure in an arrow a 2 direction.
【００３４】電圧検出線１４は、棒状圧着端子１６を介
して正極カバー６に溶接されることにより、振動等によ
り線材の破断が防止される。なお、電圧検出線１４は、
絶縁部材によって被覆されている部分が棒状圧着端子１
６のかしめ部１６ａにおいてかしめられて取り付けられ
ているため、振動等による棒状圧着端子１６との取付部
分における線材の破断も防止される。The voltage detecting wire 14 is welded to the positive electrode cover 6 via the bar-shaped crimp terminal 16 to prevent the wire from being broken by vibration or the like. Note that the voltage detection line 14 is
The portion covered with the insulating member is a bar-shaped crimp terminal 1
6 is caulked and attached at the caulking portion 16a, so that breakage of the wire at a portion where the bar-shaped crimp terminal 16 is attached due to vibration or the like is also prevented.
【００３５】以上、電圧検出線１４を単電池２に取り付
けられた正極カバー６に溶接する方法について説明した
が、正極カバー６と同様に円筒形に形成された負極カッ
プ７も正極カバー６と同じように溶接電極１５によって
溶接が可能であることは勿論である。The method of welding the voltage detection wire 14 to the positive electrode cover 6 attached to the unit cell 2 has been described above. The negative electrode cup 7 formed in a cylindrical shape like the positive electrode cover 6 is the same as the positive electrode cover 6. Of course, welding can be performed by the welding electrode 15 as described above.
【００３６】なお、電源装置１は、電圧検出線１４の代
わりに予め線材が配線されたフレキシブルプリント基板
（図示は省略）を使用することにより、線材の引き回し
作業が大幅に簡易化されるとともに、線材と単電池２と
の溶接部の位置決めが予め基板によってなされるため溶
接の自動化が容易に達成できる。It should be noted that the power supply device 1 uses a flexible printed circuit board (not shown) in which wires are preliminarily wired in place of the voltage detection wires 14, thereby greatly simplifying the wire drawing operation. Since the positioning of the welding portion between the wire and the unit cell 2 is performed in advance by the substrate, automation of welding can be easily achieved.
【００３７】電源装置１は、上述したように、電圧検出
線１４と単電池２とを溶接によって接続するため、従来
行われていたネジ止めによる接続に比して電気自動車に
積載した場合の振動等によって生じるよりネジの緩みが
ないため、接続の信頼性が向上するとともに、電圧検出
線１４の接続端側の端末処理にかかる端子代や加工代等
のコストの削減や作業時の負担を減少させることができ
る。As described above, since the power supply device 1 connects the voltage detection line 14 and the cell 2 by welding, the vibration when mounted on the electric vehicle is higher than that of the conventional connection by screwing. Since there is no loosening of screws caused by the above, the reliability of the connection is improved, and the cost of terminals and processing for the terminal processing of the connection end side of the voltage detection line 14 is reduced and the burden on the work is reduced. Can be done.
【００３８】また、電圧検出線１４は、単電池２との接
続が電池間用バスバー９によって複数の単電池２が直列
に接続される前に行われる。このため、電源装置１にお
いては、電圧検出線１４溶接時に単電池２の１本分の電
位がかかるだけであり、作業者の感電の危険が減少し、
作業面における安全性が向上する。The voltage detection line 14 is connected to the cells 2 before the plurality of cells 2 are connected in series by the inter-cell bus bar 9. For this reason, in the power supply device 1, only the potential of one cell 2 is applied at the time of welding the voltage detection line 14, and the risk of electric shock to the operator is reduced,
Safety on the work surface is improved.
【００３９】なお、電源装置１においては、終端用バス
バー１１、２０と単電池２の正極カバー６及び負極カッ
プ７とが円筒形に形成されているため、終端用バスバー
１１、２０と各単電池２電極とが電圧検出線と同様の方
法によって溶接することが可能である。In the power supply device 1, since the terminal bus bars 11, 20 and the positive electrode cover 6 and the negative electrode cup 7 of the unit cell 2 are formed in a cylindrical shape, the terminal bus bars 11, 20 and each unit cell are formed. The two electrodes can be welded by the same method as the voltage detection wire.
【００４０】[0040]
【発明の効果】以上詳細に説明したように、本発明に係
る電源装置によれば、表面積の大きな終端用バスバーと
終端の単電池とが溶接されて接続されているため、大電
流が流れる場合であっても効率よく放熱を行うことがで
きる。また、本発明に係る電源装置によれば、終端用バ
スバーと外部出力用のケーブルとの接続信頼性が高いた
め、電源装置全体としても高い接続信頼性を得ることが
できる。As described in detail above, according to the power supply device of the present invention, the terminal bus bar having a large surface area and the terminal cell are welded and connected, so that a large current flows. However, heat can be efficiently dissipated. Further, according to the power supply device of the present invention, since the connection reliability between the termination bus bar and the external output cable is high, high connection reliability can be obtained as the whole power supply device.
【００４１】本発明に係る引き出し導線の接続方法によ
れば、単電池の正極カバー又は負極カップに直接又は棒
状の圧着端子を介して電圧検出線等の引き出し導線が溶
接されるため、従来のネジ止めによる接続のように電気
自動車等に積載した際に生じる振動等によりネジが緩む
心配が無く長期的に安定した高い接続信頼性を得ること
ができる。また、本発明に係る引き出し導線の接続方法
によれば、電池間用バスバーによって単電池が直列に接
続される以前に引き出し導線の接続を行うため、作業者
が感電する危険性が低く、作業面における安全性を向上
させることができる。According to the method of connecting a lead wire according to the present invention, a lead wire such as a voltage detection wire is welded to the positive electrode cover or the negative electrode cup of the unit cell directly or through a bar-shaped crimp terminal. Long-term stable high connection reliability can be obtained without fear of loosening of screws due to vibration or the like generated when mounted on an electric vehicle or the like as in connection by stop. Further, according to the method for connecting the lead wires according to the present invention, the lead wires are connected before the cells are connected in series by the inter-cell bus bar, so that the risk of electric shock to the operator is low, and the work surface is low. Can be improved in safety.
【図１】電源装置の平面図である。FIG. 1 is a plan view of a power supply device.
【図２】電源装置の側面図である。FIG. 2 is a side view of the power supply device.
【図３】単電池の一部切欠き縦断面図である。FIG. 3 is a partially cutaway longitudinal sectional view of a unit cell.
【図４】（ａ）は、終端用バスバーの平面図であり、
（ｂ）は、終端用バスバーのＡ−Ａ断面図であり、
（ｃ）は、終端用バスバーのＢ−Ｂ断面図である。FIG. 4A is a plan view of a terminal bus bar,
(B) is an AA cross-sectional view of the termination bus bar,
(C) is BB sectional drawing of the termination | terminus bus bar.
【図５】（ａ）は、他の実施の形態にかかる終端用バス
バーの平面図であり、（ｂ）は、他の実施の形態にかか
る終端用バスバーの断面図である。FIG. 5A is a plan view of a termination bus bar according to another embodiment, and FIG. 5B is a cross-sectional view of the termination bus bar according to another embodiment.
【図６】電圧検出線と単電池の正極カバーとの接続方法
を説明するための図である。FIG. 6 is a diagram for explaining a method of connecting a voltage detection line and a positive electrode cover of a unit cell.
【図７】電圧検出線が取り付けられた圧着端子と単電池
の正極カバーとの接続方法を説明するための図である。FIG. 7 is a diagram for explaining a method of connecting a crimp terminal to which a voltage detection line is attached and a positive electrode cover of a unit cell.
１ 電源装置，２ 単電池，３ 組電池，４ 電池保持
枠，６ 正極カバー，７ 負極カップ，９ 電池間用バ
スバー，１０ バスバー円筒部，１１、２０終端用バス
バー，１２ ケーブル，１３ スリーブ型圧着端子，１
４ 電圧検出線，１５ 溶接電極，１６ 棒状圧着端
子，２１ チューブ状部，２２ コネクタDESCRIPTION OF SYMBOLS 1 Power supply device, 2 unit cell, 3 assembled battery, 4 battery holding frame, 6 positive electrode cover, 7 negative electrode cup, 9 bus bar between batteries, 10 bus bar cylindrical part, 11, 20 end bus bar, 12 cable, 13 sleeve type crimp Terminal, 1
4 voltage detection wire, 15 welding electrode, 16 rod-shaped crimp terminal, 21 tube-shaped part, 22 connector
Claims (7)
子が取り付けられた複数の単電池が組み合わされて構成
される組電池と、 上記組電池を構成する単電池を直列に接続する電池間用
接続導体と、 上記組電池の終端の単電池と外部出力端子に接続された
ケーブルとを接続する終端用接続導体とを備えて構成さ
れ、 上記終端用接続導体は、一端側に上記単電池の正極側及
び／又は負極側に取り付けられた円筒状電極端子に接続
される円筒部が形成されるとともに、他端側は、平板状
部が波状に折りたたまれかつ絞り込まれて上記ケーブル
と接続されていることを特徴とする電源装置。1. An assembled battery comprising a plurality of cells combined with cylindrical electrode terminals attached to a positive electrode side and / or a negative electrode side, and a battery connected in series with the cells constituting the above-mentioned assembled battery. And an end connection conductor for connecting a cell connected to an external output terminal and a cell at the end of the battery pack, wherein the end connection conductor is provided at one end with the unit connection conductor. A cylindrical portion connected to the cylindrical electrode terminal attached to the positive electrode side and / or the negative electrode side of the battery is formed, and the other end side is connected to the above cable by flattening the flat portion folded and narrowed down. A power supply device characterized by being performed.
端側と上記外部出力端子に接続されたケーブルとがスリ
ーブ型の圧着端子にそれぞれ通されかしめられることに
より上記ケーブルと接続されていることを特徴とする請
求項１に記載の電源装置。2. The terminal connecting conductor is connected to the cable by passing the narrowed other end and the cable connected to the external output terminal through sleeve-type crimp terminals, respectively, and crimping the cable. The power supply device according to claim 1, wherein:
子が取り付けられた複数の単電池が組み合わされて構成
される組電池と、 上記組電池を構成する単電池を直列に接続する電池間用
接続導体と、 上記組電池の終端の単電池と外部出力端子に接続された
ケーブルとを接続する終端用接続導体とを備えて構成さ
れ、 上記終端用接続導体は、一端側に上記単電池の正極側及
び／又は負極側に取り付けられた円筒状電極端子に接続
される円筒部が形成されるとともに、他端側に平板状部
が形成され、この平板状部の一辺に沿って上記ケーブル
が挿入されるチューブ状部が形成されていることを特徴
とする電源装置。3. An assembled battery formed by combining a plurality of cells having cylindrical electrode terminals attached to a positive electrode side and / or a negative electrode side, and a battery connected in series with the cells constituting the assembled battery. And an end connection conductor for connecting a cell connected to an external output terminal and a cell at the end of the battery pack, wherein the end connection conductor is provided at one end with the unit connection conductor. A cylindrical portion connected to the cylindrical electrode terminal attached to the positive electrode side and / or the negative electrode side of the battery is formed, and a flat plate portion is formed on the other end side. A power supply device having a tubular portion into which a cable is inserted.
部の外側から少なくとも１個の圧着部材でかしめられる
ことにより上記ケーブルと接続されていることを特徴と
する請求項３に記載の電源装置。4. The power supply device according to claim 3, wherein the terminating connection conductor is connected to the cable by caulking with at least one crimping member from the outside of the tubular portion. .
子が取り付けられた単電池又はこの単電池が複数組み合
わされた組電池を備えてなる電源装置に引き出し導線を
接続する方法において、 上記単電池の正極側及び／又は負極側に取り付けられた
円筒状電極端子と引き出し導線とを溶接電極によって上
記円筒状電極端子の内側と外側から挟み込んで加圧する
ことにより上記単電池の円筒状電極端子に引き出し導線
を接続することを特徴とする引き出し導線の接続方法。5. A method for connecting a lead wire to a unit cell having a cylindrical electrode terminal attached to a positive electrode side and / or a negative electrode side, or a power supply device including an assembled battery in which a plurality of such unit cells are combined, The cylindrical electrode terminal and the lead wire attached to the positive electrode side and / or the negative electrode side of the unit cell are sandwiched between the inside and outside of the cylindrical electrode terminal by a welding electrode and pressurized to thereby press the cylindrical electrode terminal of the unit cell. A lead wire is connected to the lead wire.
子が取り付けられた単電池又はこの単電池が複数組み合
わされた組電池を備えてなる電源装置に引き出し導線を
接続する方法において、 上記単電池の正極側及び／又は負極側に取り付けられた
円筒状電極端子と一端側に引き出し導線が接続された棒
状の圧着端子の他端側とを溶接電極によって上記円筒状
電極端子の内側と外側から挟み込んで加圧することによ
り上記単電池の円筒状電極端子に引き出し導線を接続す
ることを特徴とする引き出し導線の接続方法。6. A method of connecting a lead wire to a unit cell having a cylindrical electrode terminal attached to a positive electrode side and / or a negative electrode side or a power supply device including an assembled battery in which a plurality of such unit cells are combined, The cylindrical electrode terminal attached to the positive electrode side and / or the negative electrode side of the unit cell and the other end side of the rod-shaped crimp terminal to which the lead wire is connected at one end side are connected to the inside and outside of the cylindrical electrode terminal by welding electrodes. And connecting the lead wire to the cylindrical electrode terminal of the unit cell by applying pressure while holding the lead wire.
する各単電池の電圧をい検出する電圧検出線であること
を特徴とする請求項５又は請求項６に記載の引き出し導
線の接続方法。7. The method of connecting a lead wire according to claim 5, wherein the lead wire is a voltage detection line for detecting a voltage of each cell constituting the battery pack. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24639998A JP4379931B2 (en) | 1998-08-31 | 1998-08-31 | Power supply device and method of connecting lead wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24639998A JP4379931B2 (en) | 1998-08-31 | 1998-08-31 | Power supply device and method of connecting lead wires |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000077056A true JP2000077056A (en) | 2000-03-14 |
| JP4379931B2 JP4379931B2 (en) | 2009-12-09 |
Family
ID=17147942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24639998A Expired - Lifetime JP4379931B2 (en) | 1998-08-31 | 1998-08-31 | Power supply device and method of connecting lead wires |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4379931B2 (en) |
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