JP2004006420A - Manufacturing method of battery - Google Patents

Manufacturing method of battery Download PDF

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JP2004006420A
JP2004006420A JP2003300173A JP2003300173A JP2004006420A JP 2004006420 A JP2004006420 A JP 2004006420A JP 2003300173 A JP2003300173 A JP 2003300173A JP 2003300173 A JP2003300173 A JP 2003300173A JP 2004006420 A JP2004006420 A JP 2004006420A
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battery
electrode plate
short
group
electrode plates
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JP4666897B2 (en
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Masato Onishi
大西　正人
Hideo Asaka
浅香　英雄
Katsuyuki Tomioka
富岡　克行
Tokuyuki Fujioka
藤岡　徳之
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Toyota Motor Corp
Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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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
    • 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

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a battery capable of efficiently manufacturing a highly reliable battery by preventing an electrode group from being generated causing a short circuit due to swelling of electrode plates after charging and discharging. <P>SOLUTION: With a short-circuit inspection method of the battery made by inserting into a battery case the electrode group structured by laminating positive electrode plates 2 and negative electrode plates 3 with separators in between, the positive electrode plates 2 and the negative electrode plates 3 are laminated with the separators 4 in between to comprise the electrode plate group, of which, good ones passing a short-circuit inspection through pressurization are inserted and put in position in the battery case, and an opening part of the case is to be tightly sealed after an electrolyte solution is poured into the case. <P>COPYRIGHT: (C)2004,JPO

Description

　本発明は電池の製造方法に関するものである。 The present invention relates to a method for manufacturing a battery.

　従来、正極板と負極板をセパレータを介して積層して構成した極板群を電槽内に挿入して成る電池の製造方法において、電池の短絡不良の検査方法として、図３に示すように、正極板２２と負極板２３をセパレータ２４を介して積層してなる極板群２１を電槽としての電池ケース２５内に挿入した状態で、負極板２３が接触している電池ケース２５と中央の正極板２２に接続された正極端子２６と間の絶縁抵抗を絶縁抵抗測定器２７で測ることによって行う方法が知られている。 Conventionally, in a method of manufacturing a battery in which a positive electrode plate and a negative electrode plate are laminated with a separator interposed therebetween and inserted into a battery case, as a method for inspecting short-circuit failure of a battery, as shown in FIG. In a state where the electrode plate group 21 formed by laminating the positive electrode plate 22 and the negative electrode plate 23 with the separator 24 interposed therebetween is inserted into the battery case 25 as a battery case, the negative electrode plate 23 and the battery case 25 are in contact with each other. A method is known in which the insulation resistance between the positive electrode terminal 26 connected to the positive electrode plate 22 and the positive electrode plate 22 is measured by an insulation resistance measuring instrument 27.

　また、極板群を電槽内に挿入するための２本の押し棒に検査装置を接続して、挿入中又は挿入直後に押し棒間に電圧をかけて短絡検査を行うことも知られている（例えば、特許文献１参照。）。 It is also known that an inspection device is connected to two push rods for inserting the electrode group into the battery case, and a short circuit test is performed by applying a voltage between the push rods during or immediately after insertion. (For example, see Patent Document 1).

　また、電池ケース内に極板群を挿入した状態で、電解液を注入する前に、正極と負極間に高電圧を印加し、短絡電流による電圧降下によって短絡検査を行うことにより、軽短絡を起こす恐れのある未短絡部分も判別するという検査方法も知られている（例えば、特許文献２参照。）。
特開平４−１３８６７４号公報 特開平１１−４０２１０号公報 In addition, with the electrode group inserted in the battery case, before injecting the electrolytic solution, a high voltage is applied between the positive electrode and the negative electrode, and a short-circuit test is performed by a voltage drop due to a short-circuit current, so that a light short-circuit is performed. There is also known an inspection method in which an unshorted portion that may occur is also determined (for example, see Patent Document 2).
JP-A-4-138674 JP-A-11-40210

　ところが、図３に示したように電池ケース２５内に極板群２１を挿入した状態で極板群２１の絶縁抵抗を測定する方法では次のような問題があった。すなわち、電池を充放電した後には極板に膨潤が発生する一方、極板群２１は電池ケース２５によって拘束されているため、極板２２、２３間に介装されているセパレータ２４が圧縮された状態となり、その結果充放電後に極板２２、２３とセパレータ２４の間に潜在的に存在していた導電性の異物や極板２２、２３のバリにより短絡が発生する恐れがあり、そのため電解液の注入前の検査の結果は良品と判断されたものでも、充放電後に短絡不良となる電池が少なくないという問題があった。 However, the method of measuring the insulation resistance of the electrode group 21 with the electrode group 21 inserted in the battery case 25 as shown in FIG. 3 has the following problems. That is, after the battery is charged and discharged, the electrode plate swells, while the electrode plate group 21 is restrained by the battery case 25, so that the separator 24 interposed between the electrode plates 22 and 23 is compressed. As a result, after charging / discharging, there is a danger that a short circuit may occur due to conductive foreign substances and burrs of the electrode plates 22 and 23 that were potentially present between the electrode plates 22 and 23 and the separator 24. Even though the result of the inspection before the injection of the liquid was judged to be a non-defective product, there was a problem that not a few batteries had a short circuit failure after charging and discharging.

　そのため、電池を完成して充放電を行った後、エージングを入れて、不良品の排出を試みていたが、時間がかかるとともに完成した電池が不良品の場合には全く無駄になり、コスト高の要因となっていた。 For this reason, after completing the battery and performing charge and discharge, aging was attempted to discharge defective products.However, it took a long time, and if the completed battery was defective, it was completely wasted and cost was increased. Was a factor.

　また、絶縁抵抗を測定する方法では、雰囲気湿度の影響を受け易く、誤判定する恐れがあり、特に高出力設計の電池では判定が難しいという問題があった。 (4) In addition, the method of measuring the insulation resistance is susceptible to the influence of the atmospheric humidity and may cause an erroneous determination. In particular, there is a problem that the determination is difficult for a battery with a high output design.

　また、上記特許文献１に開示された検査方法は検査工程を挿入工程と同時に行うことによって生産性は向上しても、上記極板の膨潤により発生する不良品を未然に検出することはできず、また特許文献２に開示された検査方法でも、軽短絡を起こす恐れのある未短絡部分を判別できるとは言え、このような問題を高い信頼性をもって的確に検査できるという保証はない。 Further, in the inspection method disclosed in Patent Document 1, even if productivity is improved by performing the inspection step at the same time as the insertion step, a defective product caused by swelling of the electrode plate cannot be detected beforehand. The inspection method disclosed in Japanese Patent Application Laid-Open No. H11-163873 can determine an unshorted portion that may cause a light short circuit, but does not guarantee that such a problem can be accurately and reliably inspected.

　本発明は、上記従来の問題点に鑑み、充放電後の極板の膨潤に起因して短絡不良となる極板群を未然に排除して信頼性の高い電池を効率的に製造できる電池の製造方法を提供することを目的としている。 The present invention has been made in view of the above-described conventional problems, and has been developed to provide a battery capable of efficiently manufacturing a highly reliable battery by eliminating a group of electrodes that cause a short circuit failure due to swelling of the electrode after charging and discharging. It is intended to provide a manufacturing method.

　本発明の電池の製造方法は、正極板と負極板をセパレータを介して積層して極板群を構成し、極板群を加圧しながら短絡不良を検査し、検査結果が良品の極板群を電槽に挿入配置し、電槽内に電解液を注入して開口部を密封するものであり、極板群を電槽に挿入する前に極板群を加圧しながら短絡不良を検査することで、充放電後の極板の膨潤によるセパレータの圧縮状態を疑似的に作り出した状態の短絡検査を行い、良品のみを電槽に挿入することで、充放電後の極板の膨潤に起因して短絡不良となる不良品を未然に排除でき、信頼性の高い電池を効率的に製造することができる。 The battery manufacturing method according to the present invention is configured such that a positive electrode plate and a negative electrode plate are laminated via a separator to form an electrode plate group, and a short-circuit failure is inspected while pressing the electrode plate group. Is inserted into the battery case, and the opening is sealed by injecting the electrolyte into the battery case. Before inserting the electrode group into the battery case, the short circuit failure is inspected while pressing the electrode group. By performing a short-circuit inspection in a state where the compression state of the separator due to swelling of the electrode plate after charge and discharge was created, inserting only good products into the battery case caused by swelling of the electrode plate after charge and discharge As a result, defective products that cause short circuit failure can be eliminated beforehand, and a highly reliable battery can be efficiently manufactured.

　また、両極板及びセパレータを減圧乾燥した後、極板群を構成すると、雰囲気湿度の影響を受けない精度の高い検査を行った電池を製造することができる。 す る と In addition, by forming the electrode group after drying both electrode plates and the separator under reduced pressure, it is possible to manufacture a battery that has been subjected to a highly accurate inspection that is not affected by the atmospheric humidity.

　本発明によれば、極板群を電槽に挿入する前に極板群を加圧しながら短絡不良を検査し、検査結果が良品の極板群を電槽に挿入配置するので、充放電後の極板の膨潤に起因して短絡不良となる不良品を未然に排除でき、信頼性の高い電池を効率的に製造することができる。 According to the present invention, before inserting the electrode group into the battery case, the short-circuit defect is inspected while pressing the electrode group, and the inspection result is such that the good electrode group is inserted into the battery case. A defective product that causes a short circuit due to swelling of the electrode plate can be eliminated beforehand, and a highly reliable battery can be efficiently manufactured.

　以下、本発明の電池の製造方法の一実施形態について、図１、図２を参照して説明する。 Hereinafter, an embodiment of the battery manufacturing method of the present invention will be described with reference to FIGS.

　図１において、１はニッケル・水素二次電池用の極板群であり、複数枚の正極板２と複数枚の負極板３とを交互に配置するとともに、各正極板２に横方向に開口部を有する袋状のセパレータ４を被せることにより、正極板２と負極板３の間にセパレータ４を介装した状態で積層して構成されている。正極板２及び負極板３は互いに反対側の側縁部が外側に突出されてリード部とされ、両リード部にそれぞれ垂直にニッケル板又はニッケルメッキ鋼板製の正極と負極の集電板５、６が溶接接合されている。 In FIG. 1, reference numeral 1 denotes an electrode plate group for a nickel-metal hydride secondary battery, in which a plurality of positive electrode plates 2 and a plurality of negative electrode plates 3 are alternately arranged, and each of the positive electrode plates 2 has a lateral opening. It is configured such that a bag-shaped separator 4 having a portion is covered, and the separator 4 is laminated between the positive electrode plate 2 and the negative electrode plate 3 with the separator 4 interposed therebetween. Opposite side edges of the positive electrode plate 2 and the negative electrode plate 3 protrude outward to form leads, and the positive and negative current collector plates 5 made of a nickel plate or a nickel-plated steel plate are respectively perpendicular to both the lead portions. 6 are welded.

　正極板２はＮｉの発泡メタルから成るとともに、そのリード部は発泡メタルを加圧して圧縮しかつその一面にリード板を超音波溶接でシーム溶接して構成されている。また、負極板３はＮｉのパンチングメタルにリード部を除いて活物質を塗着して構成されている。また、セパレータ４は０．２０ｍｍ厚さの不織布を袋状に形成して構成されている。なお、これら正極板２、負極板３及びセパレータ４は、極板群１を構成する前に減圧乾燥して後続する短絡検査において雰囲気湿度の影響を受けないようにし、高い検査精度が得られるようにしている。 The positive electrode plate 2 is made of a Ni foam metal, and its lead portion is formed by pressurizing and compressing the foam metal and seam-welding the lead plate to one surface thereof by ultrasonic welding. The negative electrode plate 3 is formed by applying an active material to a punched metal of Ni except for a lead portion. The separator 4 is formed by forming a nonwoven fabric having a thickness of 0.20 mm into a bag shape. The positive electrode plate 2, the negative electrode plate 3, and the separator 4 are dried under reduced pressure before forming the electrode plate group 1 so as not to be affected by the atmospheric humidity in the subsequent short-circuit inspection, so that high inspection accuracy can be obtained. I have to.

　このように構成された極板群１を電槽に挿入する前に加圧治具８ａ、８ｂとシリンダ装置などの押圧具９とから成る加圧手段７の加圧治具８にセットし、集電板５、６を短絡検査装置１０のアウトプット端子１０ａ、１０ｂに接続して短絡検査が行われる。 Before inserting the electrode plate group 1 configured as described above into the battery case, the electrode group 1 is set on the pressing jig 8 of the pressing means 7 including the pressing jigs 8a and 8b and the pressing tool 9 such as a cylinder device. The current collectors 5 and 6 are connected to the output terminals 10a and 10b of the short-circuit inspection device 10 to perform a short-circuit inspection.

　短絡検査装置１０は、電源１１に第１のスイッチ１２を介してコンデンサ１３を接続し、コンデンサ１３と両アウトプット端子１０ａ、１０ｂの間に電流検出器１４とスイッチ１５を介装して構成されている。 The short-circuit inspection device 10 is configured by connecting a capacitor 13 to a power supply 11 via a first switch 12, and interposing a current detector 14 and a switch 15 between the capacitor 13 and both output terminals 10a and 10b. ing.

　短絡検査に際しては、加圧手段７にて極板群１に約４０００Ｎの荷重を負荷することによってセパレータ４の厚さをｔ１からｔ２まで圧縮して保持する。この圧縮量は、電池の充放電を繰り返すと、図２に示すように、セパレータ４の厚さが当初のｔ１から漸次圧縮されるとともに、所定回数サイクル使用した後にはセパレータ４の厚さがｔ２で安定することに基づいている。通例では、充電放電回数Ｃが１００回程度で安定し、その時には例えば当初の厚さｔ１＝０．２０ｍｍであったものが厚さｔ２＝０．１３ｍｍ程度となる。　　　 (4) During the short-circuit inspection, the thickness of the separator 4 is compressed from t1 to t2 and held by applying a load of about 4000 N to the electrode plate group 1 by the pressing means 7. When the battery is repeatedly charged and discharged, as shown in FIG. 2, the thickness of the separator 4 is gradually reduced from the initial t1, and after a predetermined number of cycles, the thickness of the separator 4 is reduced to t2. It is based on being stable. Normally, the number of times of charging / discharging C becomes stable at about 100 times, and at that time, for example, the thickness t1 = 0.20 mm at the initial thickness becomes about 0.13 mm at the thickness t2 = 0.13 mm.

　次に、短絡検査装置１０の第２のスイッチ１５を開き、第１のスイッチ１２を閉じてコンデンサ１３に充電し、充電が終わると印加電圧４００Ｖで第１のスイッチ１２を開き、第２のスイッチ１５を閉じて極板群１に通電し、その際の通電電流を電流検出器１４で測定する。通常、良品の場合は短絡電流が流れないため、良否の判定を確実に行うことができる。 Next, the second switch 15 of the short-circuit inspection device 10 is opened, the first switch 12 is closed, and the capacitor 13 is charged. When the charging is completed, the first switch 12 is opened with the applied voltage of 400 V, and the second switch is opened. 15 is closed to supply current to the electrode plate group 1, and the current supplied at that time is measured by the current detector 14. Normally, in the case of a non-defective product, a short-circuit current does not flow.

　こうして極板群１の短絡検査を行った後、良品の極板群１のみを上面開口の直方体状の電槽（図示せず）内に電解液とともに収納し、電槽の上面開口を蓋体（図示せず）にて一体的に閉鎖することによって電池が製造される。 After the short-circuit inspection of the electrode group 1 is thus performed, only the non-defective electrode group 1 is stored together with the electrolytic solution in a rectangular parallelepiped battery case (not shown) having an upper surface opening, and the upper surface opening of the battery case is covered with a lid. The battery is manufactured by closing it integrally (not shown).

　本実施形態によれば、上記のように極板群１を加圧することによって充放電後の極板２、３の膨潤によるセパレータ４の圧縮状態を疑似的に作り出して短絡検査を行っているので、極板群１を電槽に挿入する前の検査によって、充放電後の極板２、３の膨潤に起因して短絡不良となる電池を確実に検査でき、使用後に発生する不良品を未然に検出することができる。特に、短絡検査時の極板群１の加圧力を、セパレータ４の厚さが電池を所定回数サイクル使用した後に安定する厚さと同等の厚さになるように設定しているので、極板２、３の膨潤により発生する不良品がかなり後になって発生するという恐れがなく、より信頼性の高い検査を行うことができる。 According to the present embodiment, since the electrode group 1 is pressurized as described above, the compressed state of the separator 4 due to the swelling of the electrode plates 2 and 3 after charge and discharge is simulated, and the short circuit inspection is performed. Inspection before inserting the electrode plate group 1 into the battery case makes it possible to surely inspect a battery which is short-circuited due to swelling of the electrode plates 2 and 3 after charging / discharging. Can be detected. In particular, the pressing force of the electrode group 1 at the time of the short-circuit inspection is set so that the thickness of the separator 4 becomes equal to the thickness that is stable after the battery has been used a predetermined number of times. 3, there is no fear that defective products caused by swelling will occur considerably later, and a more reliable inspection can be performed.

　また、短絡不良検査は、正負極２、３間にコンデンサ１３にて所定の電圧を印加し、その際の通電電流を電流検出器１４にて測定して行っているので、微細な異物やバリによる潜在的な短絡要因も確実に検査でき、信頼性の高い検査を行うことができ、特に印加電圧を、圧縮したセパレータ４の限界電圧の２／３より低くかつそれに近い電圧、例えば４００Ｖ程度の高い電圧に設定しているので、極板群１にダメージを与えることなく、厳格な検査を行うことができ、検査の信頼性を向上できる。 In addition, the short-circuit failure inspection is performed by applying a predetermined voltage between the positive and negative electrodes 2 and 3 by the capacitor 13 and measuring the current flowing at that time by the current detector 14. And a reliable inspection can be performed. Particularly, the applied voltage is set to a voltage lower than and close to 2/3 of the limit voltage of the compressed separator 4, for example, about 400V. Since the voltage is set to be high, a strict inspection can be performed without damaging the electrode plate group 1, and the reliability of the inspection can be improved.

　また、このように予め短絡検査を行った極板群１を用いて上記のように電池を製造することによって、充放電後の極板２、３の膨潤に起因する短絡不良品を未然に排除でき、信頼性の高い電池を効率的に製造することができる。 In addition, by manufacturing a battery as described above using the electrode group 1 that has been subjected to the short-circuit test in advance, short-circuit defective products due to swelling of the electrode plates 2 and 3 after charging and discharging are eliminated. And a highly reliable battery can be manufactured efficiently.

　以上の実施形態の短絡検査方法と、極板群を加圧せずに短絡検査する従来例によって検査した場合について、その短絡検査不良率と１０００サイクル使用後の故障率とを次の表１に示す。なお、数値は従来例を１００とした指数である。 Table 1 below shows the short-circuit inspection failure rate and the failure rate after 1000 cycles of use in the short-circuit inspection method of the above embodiment and the conventional example in which short-circuit inspection is performed without applying pressure to the electrode group. Show. The numerical value is an index with the conventional example being 100.

Figure 2004006420
　表１より、本実施形態によって短絡検査時の不良率が高くなるとともに、その分その後の故障率が低下しており、本実施形態によって短絡不良を未然に精度良く検出できることが分かる。
Figure 2004006420
 From Table 1, it can be seen that according to the present embodiment, the failure rate at the time of the short-circuit inspection increases, and the subsequent failure rate decreases accordingly, and the short-circuit failure can be detected with high accuracy according to the present embodiment.

　本発明にかかる電池の製造方法は、充放電後の極板の膨潤に起因して短絡不良となる不良の極板群を未然に排除して信頼性の高い電池を効率的に製造することができるので、正極板と負極板をセパレータを介して積層して成る極板群を電槽内に挿入配置した各種電池に有用である。 ADVANTAGE OF THE INVENTION The manufacturing method of the battery which concerns on this invention can efficiently manufacture a highly reliable battery by eliminating the defective electrode group which becomes a short circuit failure due to the swelling of the electrode plate after charge / discharge. Therefore, the present invention is useful for various batteries in which an electrode plate group formed by laminating a positive electrode plate and a negative electrode plate via a separator is inserted into a battery case.

本発明の電池の製造方法の一実施形態における短絡検査工程の概略構成図である。It is a schematic structure figure of a short circuit inspection process in one embodiment of a manufacturing method of a battery of the present invention. 電池の充放電回数によるセパレータ厚の変化を示すグラフである。6 is a graph showing a change in separator thickness depending on the number of times of charging and discharging of a battery. 従来例の電池の短絡検査方法の説明図である。It is explanatory drawing of the short-circuit inspection method of the battery of the prior art example.

符号の説明Explanation of reference numerals

　１　極板群
　２　正極板
　３　負極板
　４　セパレータ
　７　加圧手段
　１０　短絡検査装置 DESCRIPTION OF SYMBOLS 1 Electrode group 2 Positive electrode plate 3 Negative electrode plate 4 Separator 7 Pressurizing means 10 Short circuit inspection device

Claims (2)

正極板と負極板をセパレータを介して積層して極板群を構成し、極板群を加圧しながら短絡不良を検査し、検査結果が良品の極板群を電槽に挿入配置し、電槽内に電解液を注入して開口部を密封することを特徴とする電池の製造方法。 A positive electrode plate and a negative electrode plate are laminated via a separator to form an electrode plate group, a short circuit failure is inspected while pressing the electrode plate group, and an electrode plate group having a good inspection result is inserted and arranged in a battery case. A method for producing a battery, comprising injecting an electrolytic solution into a tank and sealing the opening. 両極板及びセパレータを減圧乾燥した後、極板群を構成することを特徴とする請求項１記載の電池の製造方法。
The method for producing a battery according to claim 1, wherein the electrode plates are formed after drying both electrode plates and the separator under reduced pressure.
JP2003300173A 2003-08-25 2003-08-25 Battery manufacturing method Expired - Fee Related JP4666897B2 (en)

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JP2008218390A (en) * 2006-12-15 2008-09-18 Matsushita Electric Ind Co Ltd Method for evaluating internal short circuiting of battery, device for evaluating internal short circuiting of battery, battery, battery pack and their manufacturing methods
JP2009301893A (en) * 2008-06-13 2009-12-24 Ntt Docomo Inc Battery testing device and battery testing method
KR101102644B1 (en) 2004-05-14 2012-01-04 파나소닉 주식회사 Cell Test Apparatus
JP2017040633A (en) * 2015-08-21 2017-02-23 日産自動車株式会社 Short circuit inspection apparatus and short circuit inspection method
US11287478B2 (en) 2018-08-09 2022-03-29 Lg Energy Solution, Ltd. Method and apparatus for detecting damage of battery separator

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JPH0817463A (en) * 1994-06-30 1996-01-19 Sanyo Electric Co Ltd Rectangular sealed battery and its manufacture
JPH09167637A (en) * 1995-12-15 1997-06-24 Matsushita Electric Ind Co Ltd Short circuit detecting method of cylindrical battery
JPH11297367A (en) * 1998-04-06 1999-10-29 Matsushita Electric Ind Co Ltd Short-circuit inspecting method and short-circuit inspecting device for electrode group of battery

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JPS60155985A (en) * 1984-01-25 1985-08-16 Matsushita Electric Ind Co Ltd Short-circuiting inspection device
JPH0817463A (en) * 1994-06-30 1996-01-19 Sanyo Electric Co Ltd Rectangular sealed battery and its manufacture
JPH09167637A (en) * 1995-12-15 1997-06-24 Matsushita Electric Ind Co Ltd Short circuit detecting method of cylindrical battery
JPH11297367A (en) * 1998-04-06 1999-10-29 Matsushita Electric Ind Co Ltd Short-circuit inspecting method and short-circuit inspecting device for electrode group of battery

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101102644B1 (en) 2004-05-14 2012-01-04 파나소닉 주식회사 Cell Test Apparatus
JP2008218390A (en) * 2006-12-15 2008-09-18 Matsushita Electric Ind Co Ltd Method for evaluating internal short circuiting of battery, device for evaluating internal short circuiting of battery, battery, battery pack and their manufacturing methods
JP2009301893A (en) * 2008-06-13 2009-12-24 Ntt Docomo Inc Battery testing device and battery testing method
JP2017040633A (en) * 2015-08-21 2017-02-23 日産自動車株式会社 Short circuit inspection apparatus and short circuit inspection method
US11287478B2 (en) 2018-08-09 2022-03-29 Lg Energy Solution, Ltd. Method and apparatus for detecting damage of battery separator

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