JPH10294102A - Battery element - Google Patents

Battery element

Info

Publication number
JPH10294102A
JPH10294102A JP9103050A JP10305097A JPH10294102A JP H10294102 A JPH10294102 A JP H10294102A JP 9103050 A JP9103050 A JP 9103050A JP 10305097 A JP10305097 A JP 10305097A JP H10294102 A JPH10294102 A JP H10294102A
Authority
JP
Japan
Prior art keywords
positive
negative electrode
negative
electrode plate
plates
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.)
Pending
Application number
JP9103050A
Other languages
Japanese (ja)
Inventor
Yosuke Narita
洋介 成田
Hitoshi Imai
仁司 今井
Mitsugi Shinyashiki
貢 新屋敷
Toraji Kuwabara
虎嗣 桑原
Atsushi Demachi
敦 出町
Tsugio Mizoguchi
次雄 溝口
Yoshitake Fujita
价偉 藤田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP9103050A priority Critical patent/JPH10294102A/en
Publication of JPH10294102A publication Critical patent/JPH10294102A/en
Pending legal-status Critical Current

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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

PROBLEM TO BE SOLVED: To allow contacting area of positive.negative pole plates with positive.negative terminals to be increased, and contact resistance to be reduced compared with the case that the positive.negative terminals are pressed against the edges of the positive.negative pole plates. SOLUTION: In a battery element of the type that positive.negative terminals 54, 55 are brought into contact with positive.negative pole plates 51, 52 which are put in a case with an electrolytic solution, non-applied portions 51c, 52c to which active materials 51b, 52b are not applied are provided at most of one edge of the positive.negative pole plates 51, 52, then the positive.negative terminals 54, 55 are pressed against these non-applied portions 51c, 52c.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は蓄電素子に関する。The present invention relates to a power storage device.

【０００２】[0002]

【従来の技術】バッテリやコンデンサ等の電気を蓄える
蓄電素子としては、例えば、電極にリード箔を取付
け、ロール状に形成したバッテリ、特開平１−２２２
４２８号公報「電気二重層コンデンサ」が知られてい
る。2. Description of the Related Art As a storage element for storing electricity such as a battery or a capacitor, for example, a battery formed by attaching a lead foil to an electrode to form a roll is disclosed in
No. 428, "Electric Double Layer Capacitor" is known.

【０００３】上記を図１０にて説明する。図１０は従
来のバッテリの電極及びこの電極をロールした状態を示
す図である。バッテリの正電極板１０１は、正電極箔１
０２と、電解液との反応を促すために正電極箔１０２の
両面に塗布した正極活物質１０３…（…は複数個を示
す。以下同様。）とからなる。正電極箔１０２には、片
面に正極活物質１０３を塗布しない未塗布部分１０４…
を設け、この未塗布部分１０４…に正極端子（不図示）
に導通させるためのテープリード１０５…を接合する。The above will be described with reference to FIG. FIG. 10 is a view showing an electrode of a conventional battery and a state where the electrode is rolled. The positive electrode plate 101 of the battery is
02, and positive electrode active materials 103 applied to both surfaces of the positive electrode foil 102 in order to promote a reaction with the electrolytic solution (... denotes a plurality, the same applies hereinafter). On the positive electrode foil 102, an uncoated portion 104 on which the positive electrode active material 103 is not applied to one surface.
And a positive electrode terminal (not shown) on the uncoated portions 104.
Tape leads 105.

【０００４】バッテリの負電極板１０６も、負電極箔１
０７と、電解液との反応を促すための負電極箔１０７の
両面に塗布した負極活物質１０８とからなる。負電極箔
１０７には、片面に負極活物質１０８を塗布しない未塗
布部分１０９…を設け、この未塗布部分１０９…に負極
端子（不図示）に導通させるためのテープリード１０５
…を接合する。上記正・負電極板１０１，１０６は、重
ねてロール状にし、正極用のテープリード１０５…を一
端から取り出し、負極用のテープリード１０５…を他端
から取り出して、それぞれ正極端子、負極端子に接合す
るものである。[0004] The negative electrode plate 106 of the battery also has the negative electrode foil 1.
07 and a negative electrode active material 108 applied to both surfaces of the negative electrode foil 107 to promote the reaction with the electrolytic solution. The negative electrode foil 107 is provided on one surface with an uncoated portion 109 to which the negative electrode active material 108 is not applied, and a tape lead 105 for electrically connecting the uncoated portion 109 to a negative electrode terminal (not shown).
Join ... The positive / negative electrode plates 101 and 106 are stacked to form a roll, and a positive tape lead 105 is taken out from one end, and a negative tape lead 105 is taken out from the other end. It is to join.

【０００５】上記技術は、小型化が容易で安価な電気
二重層コンデンサを提供することを目的とした技術であ
り、同公報の第１図及び第２図に示される通り、分極性
電極２，３及びセパレータ４からなるコンデンサ素子１
と、このコンデンサ素子１の端面に凹凸部７，１１を接
触させた集電体６，１０とを有するものである。The above-mentioned technique is aimed at providing an inexpensive electric double-layer capacitor which can be easily reduced in size, and as shown in FIGS. Capacitor element 1 comprising 3 and separator 4
And current collectors 6 and 10 in which concavo-convex portions 7 and 11 are brought into contact with the end face of capacitor element 1.

【０００６】[0006]

【発明が解決しようとする課題】上記では、正・負電
極箔１０２，１０７にテープリード１０５…を接合しな
ければならず、また、これらのテープリード１０５…を
正・負の電極端子にも接合する必要があり、接合工程が
必要なため生産性が悪い。上記では、コンデンサ素子
１の端面、即ちエッジに集電体６，１０を接触させてい
るため、コンデンサ素子１と集電体６，１０との接触面
積を大きくすることができず、凹凸部１１を有する集電
体６，１０を用いても接触抵抗を大きく低下させること
は難しい。そこで、本発明の目的は、生産性を向上さ
せ、且つ接触抵抗をより低減することのできる蓄電素子
を提供することにある。In the above, the tape leads 105 must be joined to the positive and negative electrode foils 102 and 107, and these tape leads 105 are also connected to the positive and negative electrode terminals. Joining is required, and the joining step is required, resulting in poor productivity. In the above description, since the current collectors 6 and 10 are in contact with the end face, that is, the edge of the capacitor element 1, the contact area between the capacitor element 1 and the current collectors 6 and 10 cannot be increased, and the uneven portions 11 It is difficult to greatly reduce the contact resistance even if the current collectors 6 and 10 having Therefore, an object of the present invention is to provide a power storage element that can improve productivity and further reduce contact resistance.

【０００７】[0007]

【課題を解決するための手段】上記目的を達成するため
に本発明の請求項１は、ケース内に電解液とともに収納
した正・負電極板に、正・負極端子を接触させる形式の
蓄電素子において、正・負電極板の一辺の大部分に、活
物質を塗布しない未塗布部分を設け、この未塗布部分に
正・負極端子を当てるようにした。上記に示した正・
負電極板のエッジに当てるものに比較して、正・負電極
板と正・負極端子との接触面積が増加し、接触抵抗をよ
り小さくすることができる。In order to achieve the above object, a first aspect of the present invention is a power storage element of a type in which positive and negative electrode terminals are brought into contact with positive and negative electrode plates housed in a case together with an electrolytic solution. In, an uncoated portion on which the active material is not applied is provided on most of one side of the positive and negative electrode plates, and the positive and negative terminals are applied to the uncoated portion. The positive and
The contact area between the positive / negative electrode plate and the positive / negative electrode terminal is increased as compared with that applied to the edge of the negative electrode plate, and the contact resistance can be further reduced.

【０００８】請求項２は、正・負極端子に正・負電極板
の未塗装部分を挟み込むスリットを形成した。正・負電
極板に正・負極端子を確実に接続することができ、蓄電
素子の信頼性を向上させることができる。According to a second aspect of the present invention, a slit is formed in the positive / negative electrode terminal to sandwich an unpainted portion of the positive / negative electrode plate. The positive / negative terminals can be reliably connected to the positive / negative electrode plates, and the reliability of the power storage element can be improved.

【０００９】請求項３は、負極端子を、正極端子と同一
品とした。正・負極端子を正・負電極板側で共用するこ
とができ、製造コストを抑えることができる。In a third aspect, the negative electrode terminal is the same as the positive electrode terminal. The positive / negative terminal can be shared by the positive / negative electrode plates, and the manufacturing cost can be reduced.

【００１０】請求項４は、正・負電極板を重ねてロール
状にし、このロール状電極板の未塗装部分に放射状に且
つ波形状にした正・負極端子を当てた。正・負極端子が
正・負電極板の未塗装部分に均等に接触するようにな
り、接触抵抗を低減することができる。According to a fourth aspect of the present invention, the positive and negative electrode plates are stacked to form a roll, and the uncoated portions of the roll-shaped electrode plate are applied with radially and corrugated positive and negative terminals. The positive / negative terminal comes into uniform contact with the unpainted portion of the positive / negative electrode plate, and the contact resistance can be reduced.

【００１１】[0011]

【発明の実施の形態】本発明の実施の形態を添付図に基
づいて以下に説明する。なお、図面は符号の向きに見る
ものとする。図１は本発明に係るペダル付き電動自転車
の側面図であり、ペダル付き電動自転車１は、フレーム
２と、このフレーム２の前部に取付けたヘッドパイプ４
と、このヘッドパイプ４に回転可能に取付けた上部のハ
ンドルポスト５及び下部のフロントフォーク６と、ハン
ドルポスト５にハンドルラッグ７で取付けたハンドルバ
ー８と、フロントフォーク６の下端に回転可能に取付け
た前輪１１と、フレーム２の後端に取付けた後輪１２と
からなる。Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a side view of an electric bicycle with a pedal according to the present invention. An electric bicycle with a pedal 1 includes a frame 2 and a head pipe 4 attached to a front portion of the frame 2.
An upper handle post 5 and a lower front fork 6 rotatably mounted on the head pipe 4, a handle bar 8 mounted on the handle post 5 with a handle lug 7, and a rotatable mounting on the lower end of the front fork 6. And a rear wheel 12 attached to the rear end of the frame 2.

【００１２】フレーム２は、ヘッドパイプ４の後ろ下方
に延びるダウンフレーム１４と、このダウンフレーム１
４の後端から立上げた図示せぬシートポストと、上記ダ
ウンフレーム１４の後端から後方に延ばしたリヤフォー
ク１５と、これらシートポスト及びリヤフォーク１５後
端に掛け渡したリヤサブフォーク１６とからなる。The frame 2 includes a down frame 14 extending downward behind the head pipe 4 and the down frame 1.
4, a seat post (not shown) standing up from the rear end, a rear fork 15 extending rearward from the rear end of the down frame 14, a rear sub-fork 16 extending over the seat post and the rear end of the rear fork 15. Consists of

【００１３】ダウンフレーム１４は、バッテリ１７を着
脱可能に取付け、後端部に駆動部１８を設けたものであ
る。リヤフォーク１５は、後端に後輪１２及びチェーン
スプロケット２１を回転可能に取付けるものである。The down frame 14 has a battery 17 removably attached thereto and a drive section 18 provided at the rear end. The rear fork 15 rotatably mounts the rear wheel 12 and the chain sprocket 21 at the rear end.

【００１４】駆動部１８は、電動モータ２２と、この電
動モータ２２で駆動する駆動ギヤ２３と、この駆動ギヤ
２３に取付けたペダル２４，２４（奥は省略）とからな
る。電動モータ２２は、図示していないがメインスイッ
チ、ペダルトルクセンサ、クランク回転センサ、コント
ロールユニット、バッテリ１７（図１参照）に配線し、
人がペダル２４，２４を踏むと、これに反応して、回転
してトルクを発生させ、踏力をアシストするものであ
る。The drive section 18 comprises an electric motor 22, a drive gear 23 driven by the electric motor 22, and pedals 24, 24 (the back is omitted) attached to the drive gear 23. Although not shown, the electric motor 22 is wired to a main switch, a pedal torque sensor, a crank rotation sensor, a control unit, and a battery 17 (see FIG. 1).
When a person steps on the pedals 24, 24, the pedals rotate to generate torque and assist the pedaling force.

【００１５】駆動ギヤ２３は、チェーン２５を介してチ
ェーンスプロケット２１に駆動力を伝え、後輪１２を回
転させるものである。ここで、２６はフロントブレー
キ、２７はカゴ、２８は前輪の泥よけ、３１はシートポ
ストに取付けたパイプ、３２はシート、３３はチェーン
カバー、３４はリヤブレーキ、３５は後輪の泥よけ、３
６はスタンドである。The driving gear 23 transmits driving force to the chain sprocket 21 via the chain 25, and rotates the rear wheel 12. Here, 26 is a front brake, 27 is a cage, 28 is a front wheel mudguard, 31 is a pipe attached to a seat post, 32 is a seat, 33 is a chain cover, 34 is a rear brake, and 35 is a rear wheel mud. 3
6 is a stand.

【００１６】図２は本発明に係るバッテリの斜視図であ
り、バッテリ１７は、収納ケース４１と、この収納ケー
ス４１内に複数個を直列接続した蓄電素子としてのバッ
テリセル４２…と、これらバッテリセル４２…を電動モ
ータ２２（図１参照）に接続するためのコネクタ４３
と、これらバッテリセル４２…及び電動モータ２２間の
過電流を防止するためのヒューズ４４と、バッテリセル
４２…を家庭用電源で充電するための充電コンセント４
５とからなる。なお、４６は取っ手である。FIG. 2 is a perspective view of a battery according to the present invention. The battery 17 includes a storage case 41, a plurality of battery cells 42 connected in series in the storage case 41, and Connector 43 for connecting cells 42 to electric motor 22 (see FIG. 1)
And a fuse 44 for preventing an overcurrent between the battery cells 42 and the electric motor 22, and a charging outlet 4 for charging the battery cells 42 with a household power supply.
5 In addition, 46 is a handle.

【００１７】図３は本発明に係るバッテリセルの第１の
実施の形態を示す縦断面図であり、バッテリセル４２
は、正電極板５１と、負電極板５２と、これら正・負電
極板５１，５２との間に設けたセパレータ５３…と、正
電極板５１の上部及び負電極板５２の下部にそれぞれ接
続した正極端子である集電板５４及び負極端子である集
電板５５と、これら正・負電極板５１，５２、セパレー
タ５３…及び集電板５４，５５を収納する導電性のある
ケース５６と、このケース５６の底部５６ａにこれら正
・負電極板５１，５２、セパレータ５３…及び集電板５
４，５５を押し付けるための弾性部材としての導電板５
７と、ケース５６の上部の開口部５６ｂに導電板５７と
ともにガスケット５８を介してかしめた蓋５９と、ケー
ス５６内に注入した電解液６１とからなる。FIG. 3 is a longitudinal sectional view showing a first embodiment of the battery cell according to the present invention.
Are connected to a positive electrode plate 51, a negative electrode plate 52, a separator 53 provided between the positive and negative electrode plates 51, 52, and an upper portion of the positive electrode plate 51 and a lower portion of the negative electrode plate 52, respectively. A current collector plate 54 serving as a positive electrode terminal and a current collector plate 55 serving as a negative electrode terminal, a positive / negative electrode plate 51, 52, a separator 53, and a conductive case 56 accommodating the current collector plates 54 and 55. The positive / negative electrode plates 51 and 52, the separator 53, and the current collector plate 5 are provided on the bottom 56a of the case 56.
Conductive plate 5 as an elastic member for pressing 4, 55
7, a lid 59 caulked together with a conductive plate 57 through a gasket 58 in an upper opening 56 b of the case 56, and an electrolytic solution 61 injected into the case 56.

【００１８】正電極板５１は、正電極箔５１ａと、この
正電極箔５１ａの両面に塗布した活物質５１ｂ，５１ｂ
とからなる。負電極板５２は、負電極箔５２ａと、この
負電極箔５２ａの両面に塗布した活物質５２ｂ，５２ｂ
とからなる。セパレータ５３は、正電極板５１と負電極
板５２とを絶縁するものである。集電板５４，５５は、
同一のもので、それぞれ上下逆に組込んだものである
が、説明の都合上符号を変えた。このように、正極側と
負極側とで共通の集電板５４，５５を用いることで、部
品の種類を減らすことができ、製造コストを抑えること
ができる。導電板５７は、組付時にたわませることで押
圧力を発生させる押圧部５７ａを有する。The positive electrode plate 51 includes a positive electrode foil 51a and active materials 51b, 51b applied to both surfaces of the positive electrode foil 51a.
Consists of The negative electrode plate 52 includes a negative electrode foil 52a and active materials 52b, 52b applied to both surfaces of the negative electrode foil 52a.
Consists of The separator 53 insulates the positive electrode plate 51 from the negative electrode plate 52. The current collectors 54, 55
Although they are the same and are incorporated upside down, the reference numerals are changed for convenience of explanation. As described above, by using the common current collector plates 54 and 55 for the positive electrode side and the negative electrode side, the types of components can be reduced, and the manufacturing cost can be reduced. The conductive plate 57 has a pressing portion 57a that generates a pressing force by bending the conductive plate 57 during assembly.

【００１９】図４は本発明に係るバッテリセルの第１の
実施の形態を示す分解斜視図であり、ケース５６に、円
板状の集電板５５と、正電極板５１の外側にセパレータ
５３、セパレータ５３の外側に負電極板５２、負電極板
５２の外側にセパレータ５３を重ねて巻いたロール状電
極板である電極アセンブリ６２と、円板状の集電板５４
とを挿入し、ケース５６の上端の開口部５６ｂにガスケ
ット５８に設けた小径部５８ａを挿入し、ガスケット５
８に設けた大径部５８ｂの内面に導電板５７及び蓋５９
を挿入することを示す。FIG. 4 is an exploded perspective view showing a first embodiment of the battery cell according to the present invention. A case 56 has a disc-shaped current collector 55 and a separator 53 outside the positive electrode plate 51. A negative electrode plate 52 outside the separator 53; an electrode assembly 62 which is a roll-shaped electrode plate formed by winding the separator 53 on the outside of the negative electrode plate 52;
And the small diameter portion 58a provided on the gasket 58 is inserted into the opening 56b at the upper end of the case 56, and the gasket 5 is inserted.
The conductive plate 57 and the lid 59 are provided on the inner surface of the large-diameter portion 58 b
Indicates that a character is to be inserted.

【００２０】バッテリセル４２は、ケース５６の開口部
５６ｂに導電板５７及び蓋５９を挿入した後、図３に示
したように、ケース５６を径内方へ絞り、ケース５６の
上部を密閉したものである。集電板５４，５５は、複数
の放射状突部５４ａ…，５５ａ…と、この放射状突部５
４ａ…，５５ａ…に開けたスリット５４ｂ…，５５ｂ…
と、中央凸部５４ｃ，５５ｃとを形成したものである。In the battery cell 42, after the conductive plate 57 and the lid 59 are inserted into the opening 56b of the case 56, as shown in FIG. 3, the case 56 is squeezed inward and the upper part of the case 56 is sealed. Things. The current collector plates 54 and 55 include a plurality of radial projections 54a,.
4a ..., 55a ... slits 54b ..., 55b ...
And central convex portions 54c and 55c.

【００２１】放射状突部５４ａ…のスリット５４ｂ…
は、正電極板５１の上方に突出した正電極箔５１ａを挟
み込んで接続するものである。（図３も参照） 放射状突部５５ａ…のスリット５５ｂ…は、負電極板５
２の下方に突出した負電極箔５２ａを挟み込んで接続す
るものである。（図３も参照）The slits 54b of the radial projections 54a are formed.
Are connected by sandwiching a positive electrode foil 51a protruding above the positive electrode plate 51. (See also FIG. 3) The slits 55b of the radial projections 55a are connected to the negative electrode plate 5.
2 and is connected by sandwiching the negative electrode foil 52a protruding downward. (See also Fig. 3)

【００２２】中央凸部５４ｃは、導電板５７に接続する
部分である。中央凸部５５ｃは、ケース５６の底部５６
ａ（図３参照）に接続する部分である。ケース５６は、
底部５６ａ（図３参照）を除いて外面を電気的に絶縁処
理したものである。The central projection 54c is a portion connected to the conductive plate 57. The central convex portion 55c is provided at the bottom 56 of the case 56.
a (see FIG. 3). Case 56 is
Except for the bottom 56a (see FIG. 3), the outer surface is electrically insulated.

【００２３】上記したように、集電板５４，５５に正・
負電極板５１，５２の未塗装部分５１ｃ，５２ｃを挟み
込むスリット５４ｂ，５５ｂを形成したことで、正・負
電極板５１，５２と集電板５４，５５とを確実に接続す
ることができ、バッテリセル４２の信頼性を向上させる
ことができる。As described above, the positive and negative current collector plates 54 and 55
By forming the slits 54b and 55b that sandwich the unpainted portions 51c and 52c of the negative electrode plates 51 and 52, the positive and negative electrode plates 51 and 52 and the current collecting plates 54 and 55 can be reliably connected. The reliability of the battery cell 42 can be improved.

【００２４】図５は本発明に係る電極板を説明する図
（第１の実施の形態）であり、正電極板５１は、正電極
箔５１ａの一辺を除いて、活物質５１ｂを塗布したもの
であり、未塗装部分５１ｃ，５１ｃ（裏側の５１ｃは不
図示）は、正電極板５１の上部一辺に一定の幅に確保し
たものである。負電極板５２は、負電極箔５２ａの一辺
を除いて、活物質５２ｂを塗布したものであり、未塗装
部分５２ｃ，５２ｃ（裏側の５２ｃは不図示）は、負電
極板５２の下部一辺に一定の幅に確保したものである。
これらの未塗装部分５１ｃ，５１ｃ，５２ｃ，５２ｃ
は、活物質５１ｂ，５２ｂを塗布した部分に比べて導電
性がよい。FIG. 5 is a view for explaining an electrode plate according to the present invention (first embodiment). The positive electrode plate 51 has an active material 51b applied except for one side of a positive electrode foil 51a. The unpainted portions 51c, 51c (the back side 51c is not shown) are provided at a fixed width on one side of the upper portion of the positive electrode plate 51. The negative electrode plate 52 is formed by applying an active material 52b except for one side of the negative electrode foil 52a, and the unpainted portions 52c and 52c (the back side 52c is not shown) are formed on the lower side of the negative electrode plate 52. It is secured to a certain width.
These unpainted portions 51c, 51c, 52c, 52c
Has better conductivity than the portions to which the active materials 51b and 52b are applied.

【００２５】これらの正電極板５１及び負電極板５２
を、セパレータ５３を介して活物質５１ｂ，５２ｂ部分
が重なるように巻き、未塗装部分５１ｃ，５２ｃをロー
ル状の電極アセンブリ６２の端部から突出させ、ケース
５６（図４参照）に収納する。The positive electrode plate 51 and the negative electrode plate 52
Is wound so that the active material portions 51b and 52b overlap each other via the separator 53, and the unpainted portions 51c and 52c are projected from the end of the roll-shaped electrode assembly 62 and stored in the case 56 (see FIG. 4).

【００２６】図６は本発明に係る電極アセンブリの製造
工程のフロー図（第１の実施の形態）であり、比較例と
して従来のバッテリ（図１０参照）の製造工程のフロー
図とともに説明する。なお、本発明におけるＳＴ××、
比較例におけるＳＴ×××はステップ番号を示す。（符
号は図４、図５及び図１０参照） まず、本発明の実施例について説明する。 ＳＴ０１……正・負電極板５１，５２用の活物質５１
ｂ，５２ｂを混練する。 ＳＴ０２……ＳＴ０１で混練した活物質５１ｂ，５２ｂ
をスラリー状にし、正・負電極箔５１ａ，５２ａに塗布
する。ただし、前述の未塗装部分５１ｃ，５２ｃを設け
る。FIG. 6 is a flow chart of the manufacturing process of the electrode assembly according to the present invention (first embodiment), which will be described as a comparative example together with a flow chart of the manufacturing process of a conventional battery (see FIG. 10). In the present invention, STxx,
STxxx in the comparative example indicates a step number. (Refer to FIG. 4, FIG. 5, and FIG. 10 for reference numerals) First, an embodiment of the present invention will be described. ST01... Active material 51 for positive and negative electrode plates 51 and 52
b, 52b are kneaded. ST02 Active materials 51b and 52b kneaded in ST01
Is made into a slurry and applied to the positive and negative electrode foils 51a and 52a. However, the aforementioned unpainted portions 51c and 52c are provided.

【００２７】ＳＴ０３……正・負電極板５１，５２を正
規寸法にカットする。 ＳＴ０４……正・負電極板５１，５２をプレスして、活
物質５１ｂ，５２ｂを含めた厚さを一定にする。 ＳＴ０５……正・負電極板５１，５２を巻き取る。 ＳＴ０６……正・負電極板５１，５２をケース５６に挿
入する。ST03: The positive and negative electrode plates 51, 52 are cut to regular dimensions. ST04: The positive and negative electrode plates 51 and 52 are pressed to make the thickness including the active materials 51b and 52b constant. ST05: The positive and negative electrode plates 51 and 52 are wound up. ST06 Insert the positive and negative electrode plates 51 and 52 into the case 56.

【００２８】次に比較例について説明する。 ＳＴ１０１……正・負電極板１０１，１０６用の活物質
１０３，１０８を混練する。 ＳＴ１０２……ＳＴ１０１で混練した活物質１０３，１
０８をスラリー状にし、正・負電極箔１０２，１０７に
塗布する。ただし、前述の未塗装部分１０４，１０９を
設ける。 ＳＴ１０３……正・負電極板１０１，１０６を正規寸法
にカットする。 ＳＴ１０４……正・負電極板１０１，１０６をプレスし
て、活物質１０３，１０８を含めた厚さを一定にする。Next, a comparative example will be described. ST101: The active materials 103 and 108 for the positive and negative electrode plates 101 and 106 are kneaded. ST102 Active material 103, 1 kneaded in ST101
08 is made into a slurry and applied to the positive and negative electrode foils 102 and 107. However, the aforementioned unpainted portions 104 and 109 are provided. ST103: Cut the positive and negative electrode plates 101, 106 to regular dimensions. ST104: The positive and negative electrode plates 101 and 106 are pressed to make the thickness including the active materials 103 and 108 constant.

【００２９】ＳＴ１０５……正・負電極板１０１，１０
６にテープリード１０５…を接合する。 ＳＴ１０６……正・負電極板１０１，１０６を巻き取
る。 ＳＴ１０７……正・負電極板１０１，１０６をケースに
挿入する。 ＳＴ１０８……ケース及び蓋にテープリード１０５…を
接合する。ST105: Positive / negative electrode plates 101, 10
6 are joined to tape leads 105. ST106: The positive and negative electrode plates 101 and 106 are wound up. ST107 Insert the positive and negative electrode plates 101 and 106 into the case. ST108: The tape leads 105 are joined to the case and the lid.

【００３０】上記のように、本実施例では、比較例に示
した電極板へのテープリードの接合及びケース、蓋への
テープリードの接合の工程がなく、この分だけ生産性を
向上させることができる。また、テープリードが不要に
なり、製造コストを抑えることができる。As described above, in the present embodiment, there is no step of joining the tape lead to the electrode plate and joining the tape lead to the case and the lid as shown in the comparative example. Can be. In addition, tape leads are not required, and manufacturing costs can be reduced.

【００３１】図７は本発明に係るバッテリセルの第２の
実施の形態を示す縦断面図であり、第１の実施の形態と
同一構成要素には同一符号を付け、詳細説明は省略す
る。蓄電素子としてのバッテリセル７０は、正電極板５
１と、負電極板５２と、セパレータ５３…と、正電極板
５１の上部及び負電極板５２の下部にそれぞれ接続した
集電板７１，７２と、これら正・負電極板５１，５２、
セパレータ５３…及び集電板７１，７２を収納するケー
ス５６と、導電板５７と、ガスケット５８と、蓋５９
と、電解液６１とからなる。集電板７１，７２は、同一
のもので、それぞれ上下逆に組込んだものであるが、説
明の都合上符号を変えた。FIG. 7 is a longitudinal sectional view showing a second embodiment of the battery cell according to the present invention. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. The battery cell 70 as a power storage element includes the positive electrode plate 5
, A negative electrode plate 52, a separator 53, current collector plates 71, 72 connected to the upper part of the positive electrode plate 51 and the lower part of the negative electrode plate 52, respectively, and these positive and negative electrode plates 51, 52,
A case 56 for accommodating the separators 53 and the current collector plates 71 and 72, a conductive plate 57, a gasket 58, and a lid 59
And the electrolytic solution 61. The current collector plates 71 and 72 are the same and are incorporated upside down, respectively, but the numerals are changed for convenience of explanation.

【００３２】図７は、集電板７１，７２に複数の放射状
突部７１ａ…，７２ａ…（それぞれ１ヵ所のみ表示）を
設け、正電極板５１の未塗装部分５１ｃに集電板７１の
放射状突部７１ａ…を押当て、負電極板５２の未塗装部
分５２ｃに集電板７２の放射状突部７２ａ…を押当てた
ことを示す。このように、正・負電極板５１，５２に未
塗装部分５１ｃ，５２ｃを設け、これら未塗装部分５１
ｃ，５２ｃに集電板７１，７２の放射状突部７１ａ…，
７２ａを押当てたことで、組付性を向上させることがで
き、また、正・負電極板５１，５２と集電板７１，７２
との接触面積を大きくすることができ、接触抵抗を小さ
くすることができて、バッテリセル７０の内部抵抗をよ
り小さくすることができる。FIG. 7 shows that the current collector plates 71, 72 are provided with a plurality of radial projections 71a,..., 72a (only one is shown). The projections 71a are pressed, and the radial projections 72a of the current collector 72 are pressed against the unpainted portion 52c of the negative electrode plate 52. Thus, the unpainted portions 51c and 52c are provided on the positive and negative electrode plates 51 and 52, and the unpainted portions 51c and 52c are provided.
c, 52c are provided with radial projections 71a of current collector plates 71, 72,.
By pressing the 72a, the assemblability can be improved, and the positive / negative electrode plates 51, 52 and the current collector plates 71, 72 can be improved.
The contact area with the battery cell 70 can be increased, the contact resistance can be reduced, and the internal resistance of the battery cell 70 can be further reduced.

【００３３】図８は本発明に係る第２の実施の形態に示
した集電板の斜視図であり、集電板７１（集電板７２の
説明は省略）は、放射状突部７１ａ…と中央凸部７１ｂ
とを有する。上記放射状突部７１ａ…を有することで、
巻いた正・負電極板５１，５２（図５参照）の未塗装部
分５１ｃ，５２ｃの全周に亘り一定の間隔で均一に放射
状突部７１ａ…を押付けることができ、バッテリセル７
０（図７参照）の内部抵抗をより小さくすることができ
る。FIG. 8 is a perspective view of a current collector plate according to a second embodiment of the present invention. The current collector plate 71 (the description of the current collector plate 72 is omitted) has radial projections 71a. Central convex part 71b
And By having the radial projections 71a ...
The radial projections 71a can be uniformly pressed at regular intervals over the entire circumference of the unpainted portions 51c and 52c of the wound positive and negative electrode plates 51 and 52 (see FIG. 5).
0 (see FIG. 7) can be further reduced.

【００３４】図９は本発明に係る第２の実施の形態に示
した集電板の変形例の斜視図であり、集電板７３は、放
射状の波形状部７３ａと中央凸部７３ｂとを有する。上
記波形状部７３ａを有することで、巻いた正・負電極板
５１，５２の未塗装部分５１ｃ，５２ｃの全周に亘り一
定の間隔で均一に波形状部７３ａを押付けることがで
き、バッテリセル７０（図７参照）の内部抵抗をより小
さくすることができる。FIG. 9 is a perspective view of a modification of the current collector shown in the second embodiment according to the present invention. The current collector 73 has a radial wavy portion 73a and a central convex portion 73b. Have. By having the corrugated portion 73a, the corrugated portion 73a can be pressed uniformly at regular intervals over the entire circumference of the unpainted portions 51c and 52c of the wound positive and negative electrode plates 51 and 52, and the battery The internal resistance of the cell 70 (see FIG. 7) can be further reduced.

【００３５】尚、本発明の図４及び図８に説明した集電
板５４，５５，７１については、放射状突状部５４ａ，
５５ａ，７１ａをそれぞれ３ヵ所形成したが、これに以
外の複数ヵ所形成してもよく、要は未塗装部分５１ｃ，
５２ｃの全周に亘って複数ヵ所に均一に接触すればよ
い。また、第１の実施の形態では、正・負電極板５１，
５２の未塗装部分５１ｃ，５２ｃを正・負電極箔５１
ａ，５２ａの両面に設けたが、第２の実施の形態では、
未塗装部分５１ｃ，５２ｃを集電板７１，７２に接触す
る側の面のみに設けてもよい。The current collecting plates 54, 55, and 71 of the present invention described with reference to FIGS.
Although 55a and 71a are formed in three places, respectively, a plurality of places other than these may be formed.
What is necessary is just to contact a plurality of places uniformly over the whole circumference of 52c. In the first embodiment, the positive and negative electrode plates 51,
52, the unpainted portions 51c, 52c are
a and 52a are provided on both sides, but in the second embodiment,
The unpainted portions 51c and 52c may be provided only on the surface in contact with the current collector plates 71 and 72.

【００３６】[0036]

【発明の効果】本発明は上記構成により次の効果を発揮
する。請求項１の蓄電素子は、正・負電極板の一辺の大
部分に、活物質を塗布しない未塗布部分を設け、この未
塗布部分に正・負極端子を当てるようにしたので、正・
負電極板のエッジに当てるものに比較して、正・負電極
板と正・負極端子との接触面積が増加し、接触抵抗をよ
り小さくすることができる。According to the present invention, the following effects are exhibited by the above configuration. In the power storage device of the first aspect, an uncoated portion on which the active material is not applied is provided on most of one side of the positive / negative electrode plate, and the positive / negative terminal is applied to the uncoated portion.
The contact area between the positive / negative electrode plate and the positive / negative electrode terminal is increased as compared with that applied to the edge of the negative electrode plate, and the contact resistance can be further reduced.

【００３７】請求項２の蓄電素子は、正・負極端子に正
・負電極板の未塗装部分を挟み込むスリットを形成した
ので、正・負電極板に正・負極端子を確実に接続するこ
とができ、蓄電素子の信頼性を向上させることができ
る。According to the second aspect of the present invention, since the positive / negative electrode terminals have slits for sandwiching the unpainted portions of the positive / negative electrode plates, the positive / negative electrode terminals can be securely connected to the positive / negative electrode plates. Thus, the reliability of the power storage element can be improved.

【００３８】請求項３の蓄電素子は、負極端子を、正極
端子と同一品としたので、正・負極端子を正・負電極板
側で共用することができ、製造コストを抑えることがで
きる。According to the third aspect of the present invention, since the negative electrode terminal is the same as the positive electrode terminal, the positive and negative electrode terminals can be shared by the positive and negative electrode plates, and the manufacturing cost can be reduced.

【００３９】請求項４の蓄電素子は、正・負電極板を重
ねてロール状にし、このロール状電極板の未塗装部分に
放射状に且つ波形状にした正・負極端子を当てたので、
正・負極端子が正・負電極板の未塗装部分に均等に接触
するようになり、接触抵抗を低減することができる。According to a fourth aspect of the present invention, the positive / negative electrode plates are superposed on each other to form a roll, and the uncoated portions of the roll-shaped electrode plates are provided with radially and corrugated positive / negative terminals.
The positive / negative terminal comes into uniform contact with the unpainted portion of the positive / negative electrode plate, and the contact resistance can be reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明に係るペダル付き電動自転車の側面図FIG. 1 is a side view of an electric bicycle with a pedal according to the present invention.

【図２】本発明に係るバッテリの斜視図FIG. 2 is a perspective view of a battery according to the present invention.

【図３】本発明に係るバッテリセルの第１の実施の形態
を示す縦断面図FIG. 3 is a longitudinal sectional view showing the first embodiment of the battery cell according to the present invention.

【図４】本発明に係るバッテリセルの第１の実施の形態
を示す分解斜視図FIG. 4 is an exploded perspective view showing the first embodiment of the battery cell according to the present invention.

【図５】本発明に係る電極板を説明する図（第１の実施
の形態）FIG. 5 is a diagram illustrating an electrode plate according to the present invention (first embodiment).

【図６】本発明に係る電極アセンブリの製造工程のフロ
ー図（第１の実施の形態）FIG. 6 is a flowchart of a manufacturing process of the electrode assembly according to the present invention (first embodiment).

【図７】本発明に係るバッテリセルの第２の実施の形態
を示す縦断面図FIG. 7 is a longitudinal sectional view showing a second embodiment of the battery cell according to the present invention.

【図８】本発明に係る第２の実施の形態に示した集電板
の斜視図FIG. 8 is a perspective view of a current collector plate according to a second embodiment of the present invention.

【図９】本発明に係る第２の実施の形態に示した集電板
の変形例の斜視図FIG. 9 is a perspective view of a modified example of the current collector shown in the second embodiment according to the present invention.

【図１０】従来のバッテリの電極及びこの電極をロール
した状態を示す図FIG. 10 is a diagram showing an electrode of a conventional battery and a state where the electrode is rolled.

【符号の説明】[Explanation of symbols]

４２，７０…蓄電素子（バッテリセル）、５１…正電極
板、５１ｂ，５２ｂ…活物質、５１ｃ，５２ｃ…未塗装
部分、５２…負電極板、５４…正極端子（集電板）、５
４ｂ，５５ｂ…スリット、５５…負極端子（集電板）、
５６…ケース、６１…電解液、６２…ロール状電極板
（電極アセンブリ）。42, 70: storage element (battery cell), 51: positive electrode plate, 51b, 52b: active material, 51c, 52c: unpainted portion, 52: negative electrode plate, 54: positive electrode terminal (collector plate), 5
4b, 55b: slit, 55: negative electrode terminal (collector plate),
56 ... case, 61 ... electrolyte, 62 ... roll-shaped electrode plate (electrode assembly).

───────────────────────────────────────────────────── フロントページの続き (72)発明者 桑原 虎嗣 埼玉県狭山市新狭山１丁目10番地１ ホン ダエンジニアリング株式会社内 (72)発明者 出町 敦 埼玉県狭山市新狭山１丁目10番地１ ホン ダエンジニアリング株式会社内 (72)発明者 溝口 次雄 埼玉県狭山市新狭山１丁目10番地１ ホン ダエンジニアリング株式会社内 (72)発明者 藤田 价偉 埼玉県狭山市新狭山１丁目10番地１ ホン ダエンジニアリング株式会社内 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Toritsu Kuwahara 1-10-1 Shinsayama, Sayama-shi, Saitama Honda Engineering Co., Ltd. (72) Inventor Atsushi Demachi 1-10-1 Shin-Sayama, Sayama-shi, Saitama Honda Engineering Co., Ltd. (72) Inventor Tsugio Mizokuchi 1-10-1, Shinsayama, Sayama-shi, Saitama Prefecture Honda Engineering Co., Ltd. (72) Inventor Tomoyoshi Fujita 1-1-10, Shin-Sayama, Sayama-shi, Saitama Honda Engineering Co., Ltd.

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 ケース内に電解液とともに収納した正・
負電極板に、正・負極端子を接触させる形式の蓄電素子
において、前記正・負電極板の一辺の大部分に、活物質
を塗布しない未塗布部分を設け、この未塗布部分に正・
負極端子を当てるようにしたことを特徴とする蓄電素
子。1. A positive and / or positive electrode housed in a case together with an electrolytic solution.
In a power storage element of a type in which a positive / negative electrode terminal is brought into contact with a negative electrode plate, most of one side of the positive / negative electrode plate is provided with an uncoated portion on which the active material is not applied.
A power storage element characterized by applying a negative terminal. 【請求項２】 前記正・負極端子に前記未塗装部分を挟
み込むスリットを形成したことを特徴とする請求項１記
載の蓄電素子。2. A power storage device according to claim 1, wherein a slit is formed in said positive / negative terminal to sandwich said unpainted portion. 【請求項３】 前記負極端子は、正極端子と同一品とし
たことを特徴とする請求項１又は請求項２記載の蓄電素
子。3. The electric storage device according to claim 1, wherein the negative electrode terminal is the same as the positive electrode terminal. 【請求項４】 前記正・負電極板を重ねてロール状に
し、このロール状電極板の端部に放射状に且つ波形状に
した前記正・負極端子を当てたことを特徴とする請求項
１、請求項２又は請求項３記載の蓄電素子。4. The positive / negative electrode plate, wherein the positive / negative electrode plates are overlapped to form a roll, and the radially and corrugated positive / negative terminal is applied to an end of the roll-shaped electrode plate. The power storage element according to claim 2 or claim 3.
JP9103050A 1997-04-21 1997-04-21 Battery element Pending JPH10294102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9103050A JPH10294102A (en) 1997-04-21 1997-04-21 Battery element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9103050A JPH10294102A (en) 1997-04-21 1997-04-21 Battery element

Publications (1)

Publication Number Publication Date
JPH10294102A true JPH10294102A (en) 1998-11-04

Family

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Application Number Title Priority Date Filing Date
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Country Link
JP (1) JPH10294102A (en)

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