JP2000243360A - Pack battery - Google Patents
Pack batteryInfo
- Publication number
- JP2000243360A JP2000243360A JP11045790A JP4579099A JP2000243360A JP 2000243360 A JP2000243360 A JP 2000243360A JP 11045790 A JP11045790 A JP 11045790A JP 4579099 A JP4579099 A JP 4579099A JP 2000243360 A JP2000243360 A JP 2000243360A
- Authority
- JP
- Japan
- Prior art keywords
- terminal holder
- unit cell
- battery
- sealing plate
- battery pack
- 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
- Battery Mounting, Suspending (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、漏れた電解液を吸
い取って外部に漏らさない吸湿材を備えるパック電池に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery pack provided with a moisture absorbing material which absorbs leaked electrolyte and does not leak it to the outside.
【０００２】[0002]
【従来の技術】リチウムイオン二次電池、ニッケル−水
素電池、ニッケル−カドミウム電池等の二次電池は、異
常な状態で使用されて外装缶が破裂するのを防止するた
めに安全弁を備えている。安全弁は、電池の内圧が異常
に高くなったときに開弁して、電池内のガスを排出す
る。電池は、過電流が流れたり、あるいは過充電された
ときに、内部でガスが発生して内圧が異常に高くなるこ
とがある。ガス圧が高くなると、外装缶を破壊して危険
な状態となるので、安全弁でガスを排出している。2. Description of the Related Art Secondary batteries, such as lithium ion secondary batteries, nickel-hydrogen batteries, nickel-cadmium batteries, etc., are provided with safety valves to prevent the outer can from being ruptured when used in an abnormal condition. . The safety valve opens when the internal pressure of the battery becomes abnormally high, and discharges gas in the battery. When an overcurrent flows or the battery is overcharged, the battery may generate gas inside and the internal pressure may become abnormally high. If the gas pressure increases, the outer can will be destroyed and a dangerous state will occur, so the safety valve is used to discharge gas.
【０００３】安全弁が開弁すると、電池の内部に充填し
ているガスが排出される。ガスと一緒に電解液も排出さ
れることがある。電池から排出される電解液は、電池を
装着している充電器や電子機器に悪い影響を与える。電
解液が接点に付着すると、接点を腐食させて接触不良の
原因となる。また、電解液がプリント基板に付着する
と、導電部を腐食させたり、マイグレーションによって
導電部をショートさせるなどの弊害を起こす。When the safety valve opens, the gas filling the inside of the battery is discharged. The electrolyte may be discharged together with the gas. The electrolyte discharged from the battery has a bad effect on a charger or an electronic device in which the battery is mounted. If the electrolytic solution adheres to the contacts, it will corrode the contacts and cause poor contact. Further, if the electrolytic solution adheres to the printed circuit board, it causes adverse effects such as corrosion of the conductive portion and short-circuiting of the conductive portion due to migration.
【０００４】[0004]
【発明が解決しようとする課題】このような弊害を防止
するために、たとえば、充電器は、漏れた電解液をスム
ーズに排出する排液路を設けるものが開発されている。
充電器の排液路は、多量に漏れる電解液がケースの内部
に溜るのを防止できるが、電解液を完全に排出すること
ができない。電池から漏れた電解液は、充電器の接点や
ケースの内面に付着して故障の原因となる。さらに、ケ
ースの内部に電池を内蔵する電子機器は、電解液をスム
ーズに排出する排液路を設けるのが難しい。このため、
電池から漏れた電解液が、ケース内に溜って電子機器の
故障の原因となる。In order to prevent such an adverse effect, for example, a charger having a drainage path for smoothly discharging a leaked electrolyte has been developed.
The drainage path of the charger can prevent a large amount of electrolyte from leaking inside the case, but cannot completely discharge the electrolyte. The electrolyte leaking from the battery adheres to the contacts of the charger and the inner surface of the case, causing a failure. Furthermore, it is difficult for an electronic device having a battery inside the case to provide a drainage path for smoothly discharging the electrolyte. For this reason,
Electrolyte leaked from the battery accumulates in the case and causes a failure of the electronic device.
【０００５】本発明は、このような欠点を解決すること
を目的に開発されたものである。本発明の重要な目的
は、電池から漏れる電解液を吸い取って電解液による電
子機器の悪害を有効に防止できる電池を提供することに
ある。[0005] The present invention has been developed for the purpose of solving such a drawback. An important object of the present invention is to provide a battery capable of absorbing electrolyte leaking from the battery and effectively preventing electronic devices from being damaged by the electrolyte.
【０００６】[0006]
【課題を解決するための手段】本発明のパック電池は、
外装缶４の開口部が封口板５で気密に閉塞されると共
に、封口板５の周縁に凸条６が突出しており、凸条６の
内側に凹部７を有する素電池１と、素電池１の凹部７に
嵌着される嵌着凸部１２を下面に突出して有すると共
に、吸湿材２０を内蔵するための保持スペース１９を下
面に有し、なおかつそれ自体が絶縁材で成形されている
端子ホルダー２と、この端子ホルダー２の保持スペース
１９に配設されて、電池の漏液を吸収する吸湿材２０と
を備える。保持スペース１９に吸湿材２０を内蔵してい
る端子ホルダー２は、嵌着凸部１２を素電池１の凹部７
に嵌入して素電池１に連結されている。The battery pack of the present invention comprises:
An opening of the outer can 4 is hermetically closed by a sealing plate 5, a ridge 6 protrudes from the periphery of the sealing plate 5, and a unit cell 1 having a recess 7 inside the ridge 6, A terminal having a projection 12 protruding from the lower surface thereof, and a holding space 19 for incorporating the hygroscopic material 20 on the lower surface, and itself being formed of an insulating material. The battery pack includes a holder, and a moisture absorbing material disposed in a holding space of the terminal holder to absorb battery leakage. The terminal holder 2 in which the moisture absorbing material 20 is built in the holding space 19 is provided with the fitting projection 12 and the recess 7 of the unit cell 1.
And is connected to the unit cell 1.
【０００７】本発明の請求項２のパック電池は、素電池
１の封口板５が、安全弁１１で閉塞された漏液口１０を
開口しており、この漏液口１０と端子ホルダー２との間
に吸湿材２０を配設している。In the battery pack according to the second aspect of the present invention, the sealing plate 5 of the unit cell 1 has an opening 10 for the liquid leakage closed by the safety valve 11. The hygroscopic material 20 is provided between them.
【０００８】本発明の請求項３のパック電池は、吸湿材
２０が、漏液口１０に連通して吸入穴２０Ａを開口して
いる。In the battery pack according to a third aspect of the present invention, the moisture absorbent 20 communicates with the liquid leakage port 10 to open the suction hole 20A.
【０００９】本発明の請求項４のパック電池は、端子ホ
ルダー２の下面に、保持スペース１９に加えて、保護素
子３を内蔵する収納スペース１３を有する。端子ホルダ
ー２は、下面に、吸湿材２０と保護素子３とを配設して
いる。The battery pack according to a fourth aspect of the present invention has a storage space 13 for housing the protection element 3 in addition to the holding space 19 on the lower surface of the terminal holder 2. The terminal holder 2 has a hygroscopic material 20 and a protection element 3 disposed on the lower surface.
【００１０】本発明の請求項５のパック電池は、外装缶
４の開口端縁を封口板５から突出させて、外装缶４の開
口端縁を凸条６としている。In the battery pack according to the present invention, the opening edge of the outer can 4 is projected from the sealing plate 5, and the opening edge of the outer can 4 is formed as a ridge 6.
【００１１】本発明の請求項６のパック電池は、端子ホ
ルダー２がフィルム２３を介して外装缶４に連結されて
いる。In the battery pack according to a sixth aspect of the present invention, the terminal holder 2 is connected to the outer can 4 via the film 23.
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施例を図面に基
づいて説明する。ただし、以下に示す実施例は、本発明
の技術思想を具体化するためのパック電池を例示するも
のであって、本発明はパック電池を以下のものに特定し
ない。Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments described below illustrate a battery pack for embodying the technical idea of the present invention, and the present invention does not specify the battery pack as follows.
【００１３】さらに、この明細書は、特許請求の範囲を
理解しやすいように、実施例に示される部材に対応する
番号を、「特許請求の範囲の欄」、および「課題を解決
するための手段の欄」に示される部材に付記している。
ただ、特許請求の範囲に示される部材を、実施例の部材
に特定するものでは決してない。Further, in this specification, in order to make it easier to understand the claims, the numbers corresponding to the members shown in the embodiments will be referred to as “claims” and “ In the column of “means”.
However, the members described in the claims are not limited to the members of the embodiments.
【００１４】図１の分解斜視図に示すパック電池は、素
電池１と端子ホルダー２と吸湿材２０と保護素子３とを
備えている。素電池１は、外装缶４の開口部を封口板５
で気密に閉塞している。さらに、素電池１は、封口板５
の周縁に凸条６を突出させて、凸条６の内側に凹部７を
設けている。図の素電池１は、外装缶４の開口端縁を封
口板５から突出させて、外装缶４の開口端縁を凸条６と
している。この素電池１は、外装缶４の開口部に封口板
５を嵌入し、封口板５と外装缶４とをレーザー溶接して
外装缶４を気密に閉塞して製造される。The battery pack shown in the exploded perspective view of FIG. 1 includes a unit cell 1, a terminal holder 2, a hygroscopic material 20, and a protection element 3. In the unit cell 1, the opening of the outer can 4 is
And hermetically closed. Further, the unit cell 1 includes a sealing plate 5
The protruding ridge 6 protrudes from the periphery of the ridge, and a concave portion 7 is provided inside the ridge 6. In the unit cell 1 in the figure, the opening edge of the outer can 4 is projected from the sealing plate 5, and the opening edge of the outer can 4 is formed as a ridge 6. The unit cell 1 is manufactured by fitting a sealing plate 5 into an opening of an outer can 4 and laser-welding the sealing plate 5 and the outer can 4 to hermetically close the outer can 4.
【００１５】外装缶４は、アルミニウムやアルミニウム
合金、あるいは鉄の表面を金属メッキした金属板をプレ
ス加工して底を閉塞している筒状に成形して製作され
る。図の外装缶４は、円柱や楕円筒を所定の厚さに押し
潰した形状としている。外装缶は、図示しないが、四角
い筒状あるいは円柱ないし楕円の筒状とすることもでき
る。The outer can 4 is manufactured by pressing a metal plate obtained by metal-plating the surface of aluminum, an aluminum alloy, or iron into a cylindrical shape having a closed bottom. The illustrated outer can 4 has a shape obtained by crushing a cylinder or an elliptic cylinder to a predetermined thickness. Although not shown, the outer can can be formed in a square tubular shape or a cylindrical or elliptical tubular shape.
【００１６】封口板５は、電極端子８を中心に固定して
いる。電極端子８は、絶縁パッキン９を介して、金属製
の封口板５から絶縁して、気密の状態で固定している。
電極端子８は、封口板５の表面から突出している。この
図の素電池１は、封口板５の電極端子８の内部に安全弁
を内蔵していないが、電極端子８の内部に安全弁を内蔵
させることもできる。安全弁を内蔵する電極端子は、外
装缶の内部のガスを排出する貫通孔を設ける。電極端子
に安全弁を設けたパック電池は、この貫通孔から漏れる
電解液を吸湿材で吸い取って吸収する。The sealing plate 5 is fixed around the electrode terminal 8. The electrode terminal 8 is insulated from the metal sealing plate 5 via an insulating packing 9 and is fixed in an airtight state.
The electrode terminals 8 protrude from the surface of the sealing plate 5. Although the unit cell 1 in this figure does not have a built-in safety valve inside the electrode terminal 8 of the sealing plate 5, a safety valve may be built inside the electrode terminal 8. The electrode terminal incorporating the safety valve is provided with a through hole for discharging gas inside the outer can. The battery pack provided with a safety valve at the electrode terminal absorbs and absorbs the electrolyte leaking from the through hole with a hygroscopic material.
【００１７】図の封口板５は、電極端子８とは別の位置
に漏液口１０を開口して、ここに安全弁１１を設けてい
る。安全弁１１は、電池の内圧で破損する薄膜で、薄膜
は漏液口１０の内面に気密に密着して固定される。安全
弁１１である薄膜は、電池の内圧が設定圧力よりも低い
状態では漏液口１０を気密に閉塞し、電池の内圧が設定
圧力よりも高くなると、破損して電池内のガスを外部に
放出する。The sealing plate 5 shown in the figure has a liquid leakage port 10 opened at a position different from the electrode terminal 8, and a safety valve 11 is provided here. The safety valve 11 is a thin film that is broken by the internal pressure of the battery, and the thin film is tightly fixed to the inner surface of the liquid leakage port 10. When the internal pressure of the battery is lower than the set pressure, the thin film serving as the safety valve 11 hermetically closes the liquid leak port 10, and when the internal pressure of the battery becomes higher than the set pressure, the thin film breaks and releases gas in the battery to the outside. I do.
【００１８】端子ホルダー２は、素電池１の凹部７に嵌
着される嵌着凸部１２を下面に突出して設けている。さ
らに、電池の保護素子３を内蔵するための収納スペース
１３と、吸湿材２０を内蔵させる保持スペース１９とを
下面に設けている。この端子ホルダー２は、プラスチッ
ク等の絶縁材で成形されており、上面には端子板１４を
固定している。プラスチック製の端子ホルダー２は、金
属板である端子板１４を、インサート成形して能率よく
多量生産できる。端子板１４は、図１と図２に示すよう
に、端子ホルダー２の周縁部分を除く上面のほぼ全面を
被う外形をしている。The terminal holder 2 is provided with a fitting projection 12 fitted into the recess 7 of the unit cell 1 projecting from the lower surface. Further, a storage space 13 for housing the battery protection element 3 and a holding space 19 for housing the hygroscopic material 20 are provided on the lower surface. The terminal holder 2 is formed of an insulating material such as plastic, and has a terminal plate 14 fixed on the upper surface. The plastic terminal holder 2 can be efficiently mass-produced by insert molding the terminal plate 14 which is a metal plate. As shown in FIGS. 1 and 2, the terminal plate 14 has an outer shape that covers substantially the entire upper surface of the terminal holder 2 except for the peripheral portion.
【００１９】図１の端子ホルダー２は、周縁に下面に突
出するリブを設けて、このリブで嵌着凸部１２を成形し
ている。リブは、外周面に溝を設け、この溝に素電池１
の周縁に設けている凸条６を嵌着している。端子ホルダ
ー２のリブを、素電池１の凸条６に嵌着する状態を、図
３〜図６に示している。端子ホルダー２のリブの内側に
は、保護素子３を内蔵するための収納スペース１３と、
吸湿材２０を内蔵させる保持スペース１９とを設けてい
る。The terminal holder 2 shown in FIG. 1 is provided with a rib projecting from the lower surface on the peripheral edge thereof, and the fitting projection 12 is formed by this rib. The rib has a groove in the outer peripheral surface, and the cell 1
The convex ridge 6 provided on the peripheral edge of is fitted. FIGS. 3 to 6 show a state in which the ribs of the terminal holder 2 are fitted to the ridges 6 of the unit cell 1. Inside the rib of the terminal holder 2, a storage space 13 for incorporating the protection element 3 is provided.
There is provided a holding space 19 in which the hygroscopic material 20 is incorporated.
【００２０】収納スペース１３に内蔵される保護素子３
は、一方のリード１５を封口板５の電極端子８に、他方
のリード１５を端子板１４に接続する。このように端子
ホルダー２に内蔵される保護素子３のリード１５を、端
子ホルダー２の下側から上側に引き出すために、端子ホ
ルダー２の端部、図３において右端部に、貫通孔１６を
開口している。Protective element 3 built in storage space 13
Connect one lead 15 to the electrode terminal 8 of the sealing plate 5 and the other lead 15 to the terminal plate 14. In order to pull out the lead 15 of the protection element 3 built in the terminal holder 2 from the lower side of the terminal holder 2 to the upper side, a through hole 16 is formed at the end of the terminal holder 2, at the right end in FIG. are doing.
【００２１】さらに、図３の端子ホルダー２は、下面に
突出して、保護素子３のリード１５に開口している小孔
１５Ａに挿入して、保護素子３を定位置に保持する凸部
１７を一体成形して設けている。この構造の端子ホルダ
ー２は、保護素子３を収納スペース１３の正確な位置に
内蔵できる特長がある。保護素子３のリード１５に設け
た小孔１５Ａに、端子ホルダー２の凸部１７を入れて、
保護素子３を位置決めできるからである。さらに、小孔
１５Ａに挿入された凸部１７を、加熱して押し潰すこと
により、端子ホルダー２に保護素子３を連結できる特長
もある。Further, the terminal holder 2 shown in FIG. 3 protrudes from the lower surface and is inserted into a small hole 15A opened in the lead 15 of the protection element 3 to form a projection 17 for holding the protection element 3 in a fixed position. It is provided by integral molding. The terminal holder 2 having this structure has a feature that the protection element 3 can be built in an accurate position in the storage space 13. The protrusion 17 of the terminal holder 2 is inserted into the small hole 15A provided in the lead 15 of the protection element 3,
This is because the protection element 3 can be positioned. Further, there is a feature that the protection element 3 can be connected to the terminal holder 2 by heating and crushing the convex portion 17 inserted into the small hole 15A.
【００２２】図の端子ホルダー２は、保護素子３のリー
ド１５を封口板５の電極端子８に接続するためにの接続
孔１８を中心に貫通して開口している。接続孔１８は、
端子ホルダー２に固定している端子板１４も貫通して開
口される。接続孔１８は、スポット溶接用の電極棒を挿
入して、保護素子３のリード１５を電極端子８に溶着す
る。The terminal holder 2 shown in the figure is opened through a connection hole 18 for connecting the lead 15 of the protection element 3 to the electrode terminal 8 of the sealing plate 5. The connection hole 18
The terminal plate 14 fixed to the terminal holder 2 is also opened through. The connection hole 18 inserts an electrode rod for spot welding, and welds the lead 15 of the protection element 3 to the electrode terminal 8.
【００２３】図３に示す端子ホルダー２は、この図にお
いて右部に収納スペース１３を設けて、左部には、吸湿
材２０を内蔵するための保持スペース１９を設けてい
る。保持スペース１９は、周囲をリブで囲み、上面を、
端子ホルダー２にインサートして固定している端子板１
４で閉塞している。保持スペース１９と収納スペース１
３の境界には、周囲のリブに連結する隔壁２１を設けて
いる。隔壁２１は、保持スペース１９と収納スペース１
３とを区画して、吸湿材２０に吸収された漏液が外部に
漏れるのを防止している。図の隔壁２１は２列構造とし
て、吸湿材２０の漏液が、保持スペース１９から漏れる
のをより確実に阻止している。端子ホルダー２の周囲に
設けられて保持スペース１９を形成しているリブは、図
１と図４に示すように、安全弁１１を通過したガスを外
部に排出するために、切欠部２２を設けている。The terminal holder 2 shown in FIG. 3 is provided with a storage space 13 on the right side in FIG. 3 and a holding space 19 for incorporating the hygroscopic material 20 on the left side. The holding space 19 is surrounded by ribs, and the upper surface is
Terminal plate 1 inserted and fixed in terminal holder 2
4 is closed. Holding space 19 and storage space 1
At the boundary of No. 3, a partition 21 connected to the surrounding ribs is provided. The partition 21 includes the holding space 19 and the storage space 1.
3 to prevent leakage of the liquid absorbed by the hygroscopic material 20 to the outside. The partition 21 shown in the drawing has a two-row structure, which more reliably prevents the liquid leakage of the hygroscopic material 20 from leaking from the holding space 19. As shown in FIGS. 1 and 4, the ribs provided around the terminal holder 2 to form the holding space 19 are provided with notches 22 for discharging the gas passing through the safety valve 11 to the outside. I have.
【００２４】吸湿材２０は、電池から漏れた電解液を吸
い取って保持する。吸湿材２０は細繊維を立体的に集合
している不織布やろ紙、あるいは、微細な連続気泡のあ
るプラスチック発泡体である。吸湿材２０は、保持スペ
ース１９に嵌着できる大きさ、いいかえると、保持スペ
ース１９の内形にほぼ等しく、あるいはこれよりも多少
小さい外形で、安全弁１１の漏液口１０に対向する部分
に吸入穴２０Ａを開口している。吸湿材２０の厚さは、
保持スペース１９の高さにほぼ等しく、あるいは、多少
押し潰される状態で保持スペース１９に収納できるよう
に、押圧しない状態で保持スペース１９の高さよりも多
少高い。この吸湿材２０は、下面を封口板５に密着させ
て、安全弁１１から排出される電解液を効率よく吸収す
る。さらに、封口板５の漏液口１０の部分に吸入穴２０
Ａを開口している吸湿材２０は、漏液口１０の開口部を
閉塞しない。このため、安全弁１１は、漏液口１０から
スムーズにガスと電解液とを排出できる。漏液口１０か
ら排出されるガスは、吸入穴２０Ａに案内されて、ここ
から吸湿材２０を透過して排出される。電解液は、吸入
穴２０Ａから吸湿材２０に吸い取られる。図の吸湿材２
０は、上下に貫通して吸入穴２０Ａを開口している。た
だ、吸湿材の吸入穴は、上面まで貫通させることなく、
上面を閉塞する状態で下面に開口して設けることもでき
る。The hygroscopic material 20 sucks and holds the electrolyte leaking from the battery. The hygroscopic material 20 is a nonwoven fabric or filter paper in which fine fibers are gathered three-dimensionally, or a plastic foam having fine open cells. The hygroscopic material 20 has a size that can be fitted into the holding space 19, in other words, an outer shape substantially equal to or slightly smaller than the inner shape of the holding space 19, and is sucked into a portion of the safety valve 11 facing the liquid leakage port 10. The hole 20A is opened. The thickness of the hygroscopic material 20 is
The height is slightly higher than the height of the holding space 19 in a non-pressed state so that the storage space 19 can be stored in the holding space 19 in a state substantially equal to or slightly crushed. The hygroscopic material 20 has a lower surface in close contact with the sealing plate 5 and efficiently absorbs the electrolyte discharged from the safety valve 11. Further, a suction hole 20 is formed in the portion of the sealing plate 5 at the liquid leakage port 10.
The moisture absorbing material 20 opening A does not close the opening of the liquid leakage port 10. Therefore, the safety valve 11 can smoothly discharge the gas and the electrolyte from the liquid leakage port 10. The gas discharged from the liquid leakage port 10 is guided to the suction hole 20A, and permeates through the hygroscopic material 20 and discharged therefrom. The electrolyte is sucked into the hygroscopic material 20 from the suction hole 20A. Hygroscopic material 2 in the figure
No. 0 penetrates up and down to open a suction hole 20A. However, the suction hole of the moisture absorbent does not penetrate to the top surface,
It is also possible to provide an opening on the lower surface while closing the upper surface.
【００２５】保護素子３は、設定温度になると溶断され
る温度ヒューズである。温度ヒューズは、素電池１の温
度が設定温度以上に高くなると、溶断して素電池１の電
流を遮断する。ただ、本発明のパック電池は、保護素子
３を温度ヒューズに特定しない。保護素子３には、温度
ヒューズに代わってＰＴＣも使用できる。ＰＴＣは設定
温度になると電気抵抗が急激に大きくなって、素電池１
に流れる電流を極減して、実質的には電流を遮断する。The protection element 3 is a thermal fuse that is blown when a set temperature is reached. When the temperature of the unit cell 1 becomes higher than the set temperature, the thermal fuse is blown and cuts off the current of the unit cell 1. However, the battery pack of the present invention does not specify the protection element 3 as a thermal fuse. As the protection element 3, PTC can be used instead of the thermal fuse. In PTC, when the set temperature is reached, the electric resistance rapidly increases, and the cell 1
The current that flows through is greatly reduced, and the current is substantially cut off.
【００２６】保護素子３は、両端にリード１５を接続し
ている。リード１５は、薄い金属板で、電極端子８と端
子板１４とにスポット溶接して連結される。端子ホルダ
ー２の貫通孔１６に挿入されるリード１５は、端子ホル
ダー２に沿って折曲されて、図２に示すように、端子板
１４の上面に溶接して連結される。The protection element 3 has leads 15 connected to both ends. The lead 15 is a thin metal plate and is connected to the electrode terminal 8 and the terminal plate 14 by spot welding. The lead 15 inserted into the through hole 16 of the terminal holder 2 is bent along the terminal holder 2 and connected to the upper surface of the terminal plate 14 by welding, as shown in FIG.
【００２７】以上の構造のパック電池は、以下のように
して製造される。 端子板１４をインサート成形している端子ホルダー
２をプラスチックで製造する。 端子ホルダー２の収納スペース１３に保護素子３を
セットして、保護素子３のリード１５を端子板１４に接
続する。このとき、端子ホルダー２に設けている凸部１
７を、保護素子３のリード１５の小孔１５Ａに挿入し、
凸部１７を押し潰して保護素子３を端子ホルダー２に仮
止めすることもできる。 端子ホルダー２の保持スペース１９に吸湿材２０を
セットする。吸湿材２０は、保持スペース１９に嵌着さ
れて所定の位置に保持される。吸湿材は、端子ホルダー
の内面に接着することもできる。 端子ホルダー２の嵌着凸部１２を、素電池１の凹部
７に嵌入して、端子ホルダー２を素電池１の定位置に装
着する。このとき、保護素子３の下面に接着剤を塗布し
て、封口板５の表面に接着する。さらに、吸湿材の下面
にも接着剤を塗布して、封口板の表面に接着することも
できる。 端子ホルダー２を素電池１の定位置に装着した状態
で、端子ホルダー２の接続孔１８に電極棒を挿入して、
保護素子３のリード１５を電極端子８に溶着する。 図１と図２に示すように、端子ホルダー２と素電池
１の外装缶４にフィルム２３を付着して、端子ホルダー
２を素電池１に連結する。図に示すパック電池は、粘着
フィルムで端子ホルダー２を外装缶４に付着している。
ただ、端子ホルダーと素電池は、熱収縮フィルム等のフ
ィルムを使用して連結することもできる。The battery pack having the above structure is manufactured as follows. The terminal holder 2 in which the terminal plate 14 is insert-molded is manufactured from plastic. The protection element 3 is set in the storage space 13 of the terminal holder 2, and the lead 15 of the protection element 3 is connected to the terminal plate 14. At this time, the protrusion 1 provided on the terminal holder 2
7 into the small hole 15A of the lead 15 of the protection element 3,
The protection element 3 can be temporarily fixed to the terminal holder 2 by crushing the projection 17. The hygroscopic material 20 is set in the holding space 19 of the terminal holder 2. The hygroscopic material 20 is fitted in the holding space 19 and held at a predetermined position. The hygroscopic material can be adhered to the inner surface of the terminal holder. The fitting projection 12 of the terminal holder 2 is fitted into the recess 7 of the unit cell 1, and the terminal holder 2 is mounted at a fixed position of the unit cell 1. At this time, an adhesive is applied to the lower surface of the protection element 3 and adhered to the surface of the sealing plate 5. Further, an adhesive may be applied to the lower surface of the moisture absorbent to adhere to the surface of the sealing plate. With the terminal holder 2 attached to the fixed position of the unit cell 1, the electrode rod is inserted into the connection hole 18 of the terminal holder 2,
The lead 15 of the protection element 3 is welded to the electrode terminal 8. As shown in FIGS. 1 and 2, a film 23 is attached to the terminal holder 2 and the outer can 4 of the unit cell 1, and the terminal holder 2 is connected to the unit cell 1. In the battery pack shown in the figure, the terminal holder 2 is attached to the outer can 4 with an adhesive film.
However, the terminal holder and the unit cell can be connected using a film such as a heat shrink film.
【００２８】その後、外装缶４と端子板１４とに引出し
用のリード板を溶着した後、ケースに収納し、あるいは
熱収縮チューブ等で被覆してパック電池とする。After that, a lead plate for drawing out is welded to the outer can 4 and the terminal plate 14, and then housed in a case or covered with a heat shrink tube or the like to obtain a battery pack.
【００２９】[0029]
【発明の効果】本発明のパック電池は、電池から漏れる
電解液を吸い取って、電解液による電子機器の悪害を有
効に防止できる特長がある。それは、本発明のパック電
池が、封口板の周縁に凸条が突出して内側に凹部を有す
る素電池と、素電池の凹部に嵌着される嵌着凸部と吸湿
材を内蔵するための保持スペースとを下面に有する絶縁
材で成形された端子ホルダーと、この端子ホルダーの保
持スペースに配設されて電池の漏液を吸収する吸湿材と
を備え、保持スペースに吸湿材を内蔵する端子ホルダー
の嵌着凸部を、素電池の凹部に嵌入して素電池に連結し
ているからである。この構造のパック電池は、素電池の
封口板と端子ホルダーとの間に設けられる保持スペース
に吸湿材を配設するので、電池の漏液を効率よく吸い取
って、電解液による電子機器の悪害を有効に防止できる
特長がある。しかも、本発明のパック電池は、素電池の
封口板の周縁と端子ホルダーとを独特の構造として、吸
湿材の保持スペースを設けているので、このスペースを
有効利用して吸湿材を配設できると共に、吸湿材を所定
の位置に、簡単かつ正確に配置できる特長もある。The battery pack of the present invention has a feature that the electrolyte leaking from the battery can be sucked out and the harm of electronic equipment caused by the electrolyte can be effectively prevented. That is, the battery pack of the present invention has a unit cell having a convex portion protruding from the peripheral edge of the sealing plate and having a concave portion inside, a fitting convex portion fitted into the concave portion of the unit cell, and a holding device for incorporating the moisture absorbent. Terminal holder comprising a terminal holder formed of an insulating material having a space on the lower surface, and a moisture absorbing material disposed in the holding space of the terminal holder to absorb battery leakage, and having a moisture absorbing material built into the holding space. Is inserted into the concave portion of the unit cell and connected to the unit cell. In the battery pack of this structure, the moisture absorbing material is disposed in the holding space provided between the sealing plate of the unit cell and the terminal holder, so that the battery leakage is efficiently absorbed and the electronic device is harmed by the electrolyte. Has the feature that it can be effectively prevented. In addition, the battery pack of the present invention has a unique structure of the periphery of the sealing plate of the unit cell and the terminal holder, and has a space for holding the moisture absorbent. Therefore, the moisture absorbent can be disposed by effectively utilizing this space. In addition, there is a feature that the moisture absorbent can be easily and accurately arranged at a predetermined position.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の実施例の保護素子を内蔵するパック電
池の分解斜視図FIG. 1 is an exploded perspective view of a battery pack having a protection element according to an embodiment of the present invention.
【図２】本発明の実施例の保護素子を内蔵するパック電
池の平面図FIG. 2 is a plan view of a battery pack having a protection element according to an embodiment of the present invention.
【図３】図２に示すパック電池のＡ−Ａ線断面図3 is a sectional view of the battery pack shown in FIG. 2 taken along line AA.
【図４】図２に示すパック電池のＢ−Ｂ線断面図4 is a sectional view of the battery pack shown in FIG. 2 taken along line BB.
【図５】図２に示すパック電池のＣ−Ｃ線断面図5 is a sectional view of the battery pack shown in FIG. 2 taken along line CC.
【図６】図２に示すパック電池のＤ−Ｄ線断面図FIG. 6 is a sectional view taken along line DD of the battery pack shown in FIG. 2;
１…素電池 ２…端子ホルダー ３…保護素子 ４…外装缶 ５…封口板 ６…凸条 ７…凹部 ８…電極端子 ９…絶縁パッキン １０…漏液口 １１…安全弁 １２…嵌着凸部 １３…収納スペース １４…端子板 １５…リード １５Ａ…小孔 １６…貫通孔 １７…凸部 １８…接続孔 １９…保持スペース ２０…吸湿材 ２０Ａ…吸入穴 ２１…隔壁 ２２…切欠部 ２３…フィルム DESCRIPTION OF SYMBOLS 1 ... Unit cell 2 ... Terminal holder 3 ... Protective element 4 ... Outer can 5 ... Sealing plate 6 ... Protrusion 7 ... Recess 8 ... Electrode terminal 9 ... Insulating packing 10 ... Leakage port 11 ... Safety valve 12 ... Fitting convex part 13 ... Storage space 14 ... Terminal plate 15 ... Lead 15A ... Small hole 16 ... Through hole 17 ... Protrusion 18 ... Connection hole 19 ... Holding space 20 ... Hygroscopic material 20A ... Suction hole 21 ... Partition wall 22 ... Notch 23 ... Film
Claims (6)
閉塞されると共に、封口板(5)の周縁に凸条(6)が突出し
ており、凸条(6)の内側に凹部(7)を有する素電池(1)
と、この素電池(1)の凹部(7)に嵌着される嵌着凸部(12)
を下面に突出して有し、かつ、吸湿材(20)を内蔵するた
めの保持スペース(19)を下面に有し、なおかつ、それ自
体は絶縁材で成形されている端子ホルダー(2)と、この
端子ホルダー(2)の保持スペース(19)に配設されて、電
池の漏液を吸収する吸湿材(20)とを備え、 保持スペース(19)に吸湿材(20)を内蔵している端子ホル
ダー(2)が、嵌着凸部(12)を素電池(1)の凹部(7)に嵌入
して素電池(1)に連結されてなるパック電池。An opening of an outer can (4) is hermetically closed by a sealing plate (5), and a ridge (6) protrudes from the periphery of the sealing plate (5). Unit cell (1) having a recess (7) inside
And a fitting projection (12) fitted into the recess (7) of the unit cell (1).
A terminal holder (2), which has a holding space (19) on the lower surface for projecting a hygroscopic material (20) on the lower surface, and which itself is formed of an insulating material, A moisture absorbing material (20) is provided in the holding space (19) of the terminal holder (2) to absorb battery leakage, and the moisture absorbing material (20) is built in the holding space (19). A battery pack in which a terminal holder (2) is fitted with a fitting projection (12) into a recess (7) of the unit cell (1) and connected to the unit cell (1).
閉塞されてなる漏液口(10)を開口しており、この漏液口
(10)と端子ホルダー(2)との間に吸湿材(20)を配設して
いる請求項１に記載されるパック電池。2. A sealing plate (5) of a unit cell (1) has a liquid leak opening (10) closed by a safety valve (11).
The battery pack according to claim 1, wherein a moisture absorbent (20) is provided between the terminal holder (10) and the terminal holder (2).
入穴(20A)を開口している請求項２に記載されるパック
電池。3. The battery pack according to claim 2, wherein the hygroscopic material (20) communicates with the liquid leakage port (10) to open a suction hole (20A).
ス(19)に加えて、保護素子(3)を内蔵する収納スペース
(13)を有し、端子ホルダー(2)の下面に、吸湿材(20)と
保護素子(3)とが配設されてなる請求項１に記載される
パック電池。4. A storage space for housing a protection element (3) in addition to a holding space (19) on a lower surface of the terminal holder (2).
The battery pack according to claim 1, comprising (13), wherein a hygroscopic material (20) and a protection element (3) are provided on a lower surface of the terminal holder (2).
出させて、外装缶(4)の開口端縁を凸条(6)としている請
求項１に記載されるパック電池。5. The pack according to claim 1, wherein an opening edge of the outer can (4) is projected from the sealing plate (5), and an opening edge of the outer can (4) is a ridge (6). battery.
て外装缶(4)に連結されてなる請求項１に記載されるパ
ック電池。6. The battery pack according to claim 1, wherein the terminal holder (2) is connected to the outer can (4) via a film (23).
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04579099A JP3475113B2 (en) | 1999-02-24 | 1999-02-24 | Battery pack |
| TW088123282A TW432736B (en) | 1999-02-23 | 1999-12-30 | Pack battery |
| KR1020000003458A KR100583223B1 (en) | 1999-02-23 | 2000-01-25 | pack battery |
| CNB001023020A CN1163988C (en) | 1999-02-23 | 2000-02-09 | Cassette battery |
| EP00103535A EP1032060B1 (en) | 1999-02-23 | 2000-02-18 | Battery pack |
| DE60030345T DE60030345T2 (en) | 1999-02-23 | 2000-02-18 | Battery Pack |
| US09/510,310 US6432575B1 (en) | 1999-02-23 | 2000-02-22 | Battery pack |
| HK00107594A HK1028490A1 (en) | 1999-02-23 | 2000-11-27 | A pack battery. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04579099A JP3475113B2 (en) | 1999-02-24 | 1999-02-24 | Battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000243360A true JP2000243360A (en) | 2000-09-08 |
| JP3475113B2 JP3475113B2 (en) | 2003-12-08 |
Family
ID=12729086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04579099A Expired - Fee Related JP3475113B2 (en) | 1999-02-23 | 1999-02-24 | Battery pack |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3475113B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007213817A (en) * | 2006-02-07 | 2007-08-23 | Hitachi Vehicle Energy Ltd | Nonaqueous electrolyte secondary battery |
| JP2007294270A (en) * | 2006-04-25 | 2007-11-08 | Sanyo Electric Co Ltd | Power supply device |
| JP2012226870A (en) * | 2011-04-15 | 2012-11-15 | Jx Nippon Oil & Energy Corp | Fuel cell module |
| JP2014056809A (en) * | 2012-09-11 | 2014-03-27 | Samsung Sdi Co Ltd | Lead tab, battery pack having the same, and method of manufacturing lead tab |
-
1999
- 1999-02-24 JP JP04579099A patent/JP3475113B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007213817A (en) * | 2006-02-07 | 2007-08-23 | Hitachi Vehicle Energy Ltd | Nonaqueous electrolyte secondary battery |
| JP2007294270A (en) * | 2006-04-25 | 2007-11-08 | Sanyo Electric Co Ltd | Power supply device |
| JP2012226870A (en) * | 2011-04-15 | 2012-11-15 | Jx Nippon Oil & Energy Corp | Fuel cell module |
| JP2014056809A (en) * | 2012-09-11 | 2014-03-27 | Samsung Sdi Co Ltd | Lead tab, battery pack having the same, and method of manufacturing lead tab |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3475113B2 (en) | 2003-12-08 |
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