JP2012119116A - Battery pack - Google Patents
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- JP2012119116A JP2012119116A JP2010266157A JP2010266157A JP2012119116A JP 2012119116 A JP2012119116 A JP 2012119116A JP 2010266157 A JP2010266157 A JP 2010266157A JP 2010266157 A JP2010266157 A JP 2010266157A JP 2012119116 A JP2012119116 A JP 2012119116A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
本発明は各種電子機器の電源として用いられる電池パックに関し、特に単電池を複数個接続した電池にリード線を溶接する電極構成に関するものである。 The present invention relates to a battery pack used as a power source for various electronic devices, and more particularly to an electrode configuration for welding lead wires to a battery in which a plurality of single cells are connected.
電池を電源とする電子機器の中で、単電池を複数個接続し大容量を必要とする電子機器は数多く存在する。そのような大容量電源を実現するために単電池を電気的に接続する方法としては、単電池間をリード板を用いて溶接により接続するのが一般的である（例えば、特許文献１参照）。 Among electronic devices that use batteries as power sources, there are many electronic devices that require a large capacity by connecting a plurality of single cells. As a method of electrically connecting the cells to realize such a large capacity power supply, it is common to connect the cells by welding using a lead plate (see, for example, Patent Document 1). .
また外部に電力を取り出すために単電池間を接続するリード板にリード線を溶接した構造を有しており、単電池とリード板及びリード線の接続は、例えば図４（ａ）、（ｂ）、（ｃ）に示すような構成となっていた。 Moreover, in order to take out electric power outside, it has the structure which welded the lead wire to the lead plate which connects between single cells, and the connection of a single cell, a lead plate, and a lead wire is shown, for example in FIG. ) And (c).
図４（ａ）において単電池２２と単電池２３の負極同士はリード板１９で溶接点２６で並列接続されており、単電池２４と単電池２５の負極同士はリード板１７により、また正極同士はリード板１９により並列接続されている。またリード板１９によって上記並列接続された２組の電池は直列に接続されている。図４（ｂ）は、あらかじめリード板２０にリード線１８を圧着端子２１を介して接続した部品を示している。上記の部品を図４（ｃ）に示すように単電池２２の正極及び単電池２３の正極に溶接接続していた。 In FIG. 4A, the negative electrodes of the unit cell 22 and the unit cell 23 are connected in parallel at the welding point 26 at the lead plate 19, and the negative electrodes of the unit cell 24 and the unit cell 25 are connected by the lead plate 17 and between the positive electrodes. Are connected in parallel by a lead plate 19. The two sets of batteries connected in parallel by the lead plate 19 are connected in series. FIG. 4B shows a component in which the lead wire 18 is connected to the lead plate 20 via the crimp terminal 21 in advance. The above parts were welded to the positive electrode of the unit cell 22 and the positive electrode of the unit cell 23 as shown in FIG.
しかしながら上記の構成では、リード板２０とリード線１８の接続を行った後、単電池２２と単電池２３の正極に上記のリード板２０とリード線１８の接続済み部品を溶接接続するというような二段階の工程が必要になる。すなわち、リード板２０を単電池２２と単電池２３の正極に溶接した後に、リード板２０に対してリード線１８を溶接しようとしても溶接電流を受ける電極がなく、またリード板が電池に接近したり、あるいは接触した場合には、電池本体が溶接の熱影響を受けるため行うことができなかった。 However, in the above configuration, after connecting the lead plate 20 and the lead wire 18, the connected parts of the lead plate 20 and the lead wire 18 are welded to the positive electrodes of the unit cell 22 and the unit cell 23. A two-step process is required. That is, after the lead plate 20 is welded to the positive electrodes of the unit cell 22 and the unit cell 23, there is no electrode that receives a welding current even if the lead wire 18 is welded to the lead plate 20, and the lead plate approaches the battery. Or contact, the battery main body is affected by the heat of welding and cannot be performed.
本発明は上記従来の課題を解決するもので、リード板とリード線をあらかじめ溶接接続した部品を準備することなく、すべての電池をリード板により接続した後、リード線のみを溶接することを可能とした電池パックを提供することを目的とする。 The present invention solves the above-mentioned conventional problems, and it is possible to weld only the lead wire after all the batteries are connected by the lead plate without preparing a part in which the lead plate and the lead wire are welded in advance. An object is to provide a battery pack.
上記目的を達成するために本発明の電池パックは、複数個の単電池の電極間をリード板で溶接接続し、少なくとも１個のリード板の一部にリード線を溶接接続したものを外装に収納した電池パックにおいて、前記リード線を溶接接続するリード板と単電池との間にバックアップ電極を配置したことを特徴とするものである。 In order to achieve the above-mentioned object, the battery pack of the present invention has a plurality of single cell electrodes welded to each other with a lead plate, and a lead wire welded to a part of at least one lead plate is attached to the exterior. The stored battery pack is characterized in that a backup electrode is disposed between a lead plate and a unit cell for welding and connecting the lead wires.
本発明の構成とすることで、全ての単電池にリード板を溶接接続した後で、リード線をリード板に溶接接続でき、リード板とリード線を別工程で溶接接続することを必要としない電池パックを提供することができる。 With the configuration of the present invention, after the lead plate is welded and connected to all the single cells, the lead wire can be welded and connected to the lead plate, and it is not necessary to weld and connect the lead plate and the lead wire in a separate process. A battery pack can be provided.
本発明によると、単電池と単電池の間にバックアップ電極を配置し、単電池と単電池とをリード板で溶接接続することで、バックアップ電極がリード板と単電池の間に位置し、リード板の上からリード線を溶接接続することが可能となる。したがって全ての単電池にリード板を溶接接続した後でリード線をリード板に溶接接続することができ、リード板とリード線をあらかじめ別工程で溶接接続することによって取り扱いにくいリード線付リード板を必要としない電池パックを提供することができる。 According to the present invention, the backup electrode is disposed between the unit cell and the unit cell and the unit cell are welded and connected with the lead plate, so that the backup electrode is located between the lead plate and the unit cell, and the lead Lead wires can be welded from above the plate. Therefore, after the lead plate is welded and connected to all the cells, the lead wire can be welded and connected to the lead plate. By connecting the lead plate and the lead wire in a separate process in advance, A battery pack that is not required can be provided.
本発明による第１の発明は、複数個の単電池の電極間をリード板で溶接接続し、少なくとも１個のリード板の一部にリード線を溶接接続したものを外装に収納した電池パックにおいて、前記リード線を溶接接続するリード板と単電池との間にバックアップ電極を配置したことを特徴とする電池パックである。この構成により単電池にリード板を接続した後でリード線をリード板に接続でき、その効果としてリード板とリード線をあらかじめ別工程で接続しておくことを必要としない電池パックを提供することができる。 According to a first aspect of the present invention, there is provided a battery pack in which a plurality of single battery electrodes are welded and connected with a lead plate, and a lead wire is welded and connected to at least a part of one lead plate. A battery pack is characterized in that a backup electrode is disposed between a lead plate and a single cell to which the lead wire is connected by welding. With this configuration, a lead pack can be connected to a lead plate after the lead plate is connected to a single battery, and as a result, a battery pack that does not require connecting the lead plate and the lead wire in a separate process in advance is provided. Can do.
本発明による第２の発明は、第１の発明において、上記バックアップ電極が絶縁性粘着層を有する導電板であることを特徴とする電池パックである。この構成により、溶接時の溶接電流が単電池に流れるのを防ぐことができる。また、バックアップ電極は電池上に固定されるため振動によって位置がずれることなく、溶接作業を安定して行うことができる。溶接後もリード板と単電池の空間を埋め、リード板を保持する効果を得ることができる。また、複数の単電池にまたがるようにバックアップ電極を配置することにより、電池同士を固定する効果も得られる。 A second invention according to the present invention is the battery pack according to the first invention, wherein the backup electrode is a conductive plate having an insulating adhesive layer. With this configuration, it is possible to prevent a welding current during welding from flowing to the unit cell. In addition, since the backup electrode is fixed on the battery, the welding operation can be stably performed without being displaced by vibration. Even after welding, an effect of filling the space between the lead plate and the unit cell and holding the lead plate can be obtained. Moreover, the effect which fixes a battery is also acquired by arrange | positioning a backup electrode so that it may straddle a some cell.
本発明による第３の発明は、第２の発明において、上記導電板と絶縁性粘着層との間に絶縁板を有することを特徴とする電池パックである。この構成により、溶接時の溶接電流が単電池に流れるのをより確実に防止でき、熱による電池外観の損傷や、負極である電池ケースの意匠ラベルが損傷した場合に正極側のリード板と負極ケースとの短絡を防止する効果がある。 A third invention according to the present invention is the battery pack according to the second invention, further comprising an insulating plate between the conductive plate and the insulating adhesive layer. With this configuration, it is possible to more reliably prevent welding current from flowing to the unit cell during welding, and the positive lead plate and the negative electrode when the external appearance of the battery or the design label of the negative battery case is damaged by heat. There is an effect of preventing a short circuit with the case.
（実施の形態）
以下、本発明の実施の形態について説明する。なお、以下に示す実施の形態は本発明を具体化した一例であって、本発明の技術的範囲を限定するものではない。
(Embodiment)
Embodiments of the present invention will be described below. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.
図１（ａ）、（ｂ）、（ｃ）、（ｄ）は本発明の実施の形態における電池パックの製造工程を示す概略構成図である。図１（ａ）に示すように、単電池１と単電池２の正極が上方向、単電池３と単電池４の正極が下方向に配置され、単電池１と単電池２の正極間にバックアップ電極７が配置されている。バックアップ電極７は図２に示す構造をしている。
すなわち絶縁性粘着層１２の上に導電板１０が形成されている。導電板１０は導電性の点から銅製であることが好ましい。絶縁性粘着層１２は絶縁性の両面テープなどを使用することができる。絶縁性粘着層１２の粘着力によってバックアップ電極７が単電池１および単電池２に固定される。
1 (a), (b), (c), and (d) are schematic configuration diagrams showing a battery pack manufacturing process according to an embodiment of the present invention. As shown in FIG. 1 (a), the positive electrodes of the single cell 1 and the single cell 2 are arranged upward, the positive electrodes of the single cell 3 and the single cell 4 are arranged downward, and between the positive electrodes of the single cell 1 and the single cell 2 A backup electrode 7 is disposed. The backup electrode 7 has a structure shown in FIG.
That is, the conductive plate 10 is formed on the insulating adhesive layer 12. The conductive plate 10 is preferably made of copper from the viewpoint of conductivity. As the insulating adhesive layer 12, an insulating double-sided tape or the like can be used. The backup electrode 7 is fixed to the unit cell 1 and the unit cell 2 by the adhesive force of the insulating adhesive layer 12.
続いて図１（ｂ）に示したように、単電池１と単電池２の正極間、単電池３と単電池４の負極間それぞれにリード板５を溶接点１６にて溶接し、単電池１及び２の負極と単電池３及び４の正極にリード板５を溶接することで２直２並列の構成が成立する。溶接手段としては抵抗溶接がある。またリード板の材質はニッケルである。 Subsequently, as shown in FIG. 1 (b), lead plates 5 are welded at welding points 16 between the positive electrodes of the unit cell 1 and the unit cell 2 and between the unit cell 3 and the negative electrode of the unit cell 4, respectively. By welding the lead plate 5 to the negative electrodes 1 and 2 and the positive electrodes of the single cells 3 and 4, a two-by-two parallel configuration is established. There is resistance welding as a welding means. The material of the lead plate is nickel.
続いて図１（ｃ）に示したように、単電池１と単電池２の正極に溶接したリード板５に正極側のリード線６が接続された圧着端子１３を溶接する。これはあらかじめ配置しておいたバックアップ電極７の上のリード板５に圧着端子１３を配置し溶接する。バックアップ電極の厚みは正極キャップ１５の高さと同じ程度であれば、リード板５が水平となり、溶接作業がし易くなるので好ましい。 Subsequently, as shown in FIG. 1C, the crimp terminal 13 having the positive lead wire 6 connected to the lead plate 5 welded to the positive electrodes of the single cells 1 and 2 is welded. In this case, the crimp terminal 13 is arranged and welded to the lead plate 5 on the backup electrode 7 arranged in advance. If the thickness of the backup electrode is about the same as the height of the positive electrode cap 15, the lead plate 5 is horizontal, which is preferable because the welding operation is easy.
バックアップ電極の役割としては以下のことが考えられる。すなわち、電池に直接溶接する場合は十分に溶接電流が被溶接物を流れるが、薄い物同士の溶接の場合、電極の加圧に耐えることができず、また溶接電流が被溶接物の接点に貫通するような流れを得にくい。被溶接物の下にバックアップ電極を設けることで、電極の加圧を支え、且つ電流を被溶接物に貫通する流れを呼び込むことができる。溶接点は溶接電流・溶接時間・加圧等の溶接条件により被溶接物同士で発生するようにコントロールでき、バックアップ電極が溶接されることはない。 The following can be considered as the role of the backup electrode. That is, when welding directly to the battery, the welding current flows sufficiently through the work piece, but when thin objects are welded together, it cannot withstand the pressure of the electrode, and the welding current is applied to the contact point of the work piece. It is difficult to obtain a flow that penetrates. By providing a backup electrode under the workpiece, it is possible to support the pressurization of the electrode and to draw a flow of current passing through the workpiece. The welding point can be controlled to be generated between the workpieces according to welding conditions such as welding current, welding time, and pressurization, and the backup electrode is not welded.
単電池４の負極に負極側のリード線８が接続された圧着端子１４を配置し溶接する。電池全体をポリエチレン製の外装９で覆い、熱収縮によりパッキングを完了する。
この構成により単電池１〜４にリード板５を接続した後でリード線６をリード板５に接続でき、その効果としてリード板５とリード線６をあらかじめ別工程で溶接接続しておくことを必要とせず、リード線付リード板を取り扱う手間も生じない電池パックを提供することができる。
A crimp terminal 14 having a negative lead wire 8 connected to the negative electrode of the unit cell 4 is placed and welded. The entire battery is covered with a polyethylene sheath 9, and packing is completed by heat shrinkage.
With this configuration, the lead wire 6 can be connected to the lead plate 5 after the lead plate 5 is connected to the cells 1 to 4, and as an effect, the lead plate 5 and the lead wire 6 are welded and connected in advance in a separate process. It is possible to provide a battery pack that is not required and does not require the trouble of handling a lead plate with lead wires.
また図３に示すように、導電板１０と絶縁性粘着層１２の間に絶縁板１１を設けてもよい。絶縁板１１としてはアクリル板等を用いることができる。絶縁板１１を設けることにより、溶接時の溶接電流が単電池に流れるのをより確実に防止でき、熱による電池外観の損傷や、負極である電池ケースの意匠ラベルが損傷した場合に正極側のリード板と負極ケースとの短絡を防止する効果がある。 In addition, as shown in FIG. 3, an insulating plate 11 may be provided between the conductive plate 10 and the insulating adhesive layer 12. As the insulating plate 11, an acrylic plate or the like can be used. By providing the insulating plate 11, it is possible to more reliably prevent the welding current from flowing through the single cell from being welded. When the battery external appearance damage due to heat or the design label of the battery case which is the negative electrode is damaged, the positive electrode side There is an effect of preventing a short circuit between the lead plate and the negative electrode case.
本実施の形態では、外装として熱収縮材を用いた例を示したが、樹脂製の収納ケース等であってもかまわない。 In the present embodiment, an example in which a heat-shrink material is used as an exterior is shown, but a resin storage case or the like may be used.
本発明にかかる電池パックは、単電池にリード板を溶接接続した後でリード線をリード板に溶接接続でき、その効果としてリード板とリード線をあらかじめ別工程で溶接接続しておく必要がない。また、溶接後もリード板と単電池の空間を埋め、リード板を保持する効果を提供することができるので生産効率と信頼性を向上させる複数個の電池の接続構成として有用である。 In the battery pack according to the present invention, the lead wire can be welded to the lead plate after the lead plate is welded to the unit cell, and as a result, the lead plate and the lead wire need not be welded and connected in a separate process in advance. . Further, since the effect of filling the space between the lead plate and the single cell and retaining the lead plate after welding can be provided, it is useful as a connection configuration of a plurality of batteries for improving production efficiency and reliability.
１、２、３、４ 単電池
５ リード板
６、８ リード線
７ バックアップ電極
９ 外装
１０ 導電板
１１ 絶縁板
１２ 絶縁性粘着層
１３、１４ 圧着端子
１５ 正極キャップ
１６ 溶接点
1, 2, 3, 4 Single cell 5 Lead plate 6, 8 Lead wire 7 Backup electrode 9 Exterior 10 Conductive plate 11 Insulating plate 12 Insulating adhesive layer 13, 14 Crimp terminal 15 Positive electrode cap 16 Welding point
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010266157A JP2012119116A (en) | 2010-11-30 | 2010-11-30 | Battery pack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010266157A JP2012119116A (en) | 2010-11-30 | 2010-11-30 | Battery pack |
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| Publication Number | Publication Date |
|---|---|
| JP2012119116A true JP2012119116A (en) | 2012-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2010266157A Pending JP2012119116A (en) | 2010-11-30 | 2010-11-30 | Battery pack |
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| Country | Link |
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| JP (1) | JP2012119116A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11824173B2 (en) | 2018-11-07 | 2023-11-21 | Lg Energy Solution, Ltd. | Battery module |
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2010
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11824173B2 (en) | 2018-11-07 | 2023-11-21 | Lg Energy Solution, Ltd. | Battery module |
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