JP2020087880A - Charging and discharging method of power storage device - Google Patents
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Abstract
Description
本発明は、蓄電装置の充放電方法に関する。 The present invention relates to a charging/discharging method for a power storage device.
二次電池やキャパシタなどの蓄電装置の製造においては、蓄電装置の活性化や安定化等を図るための初期充電等、複数の製造工程で充放電装置を用いた蓄電装置の充放電を行う。例えば特許文献１に開示された充放電装置は、プローブを有する充放電機と、蓄電装置が載置される載置部と、を備える。蓄電装置の充放電は、載置部に蓄電装置を載置させた状態で蓄電装置の正負の電極端子にプローブを接触させて行う。 In manufacturing a power storage device such as a secondary battery or a capacitor, the power storage device is charged/discharged using a charge/discharge device in a plurality of manufacturing steps, such as initial charging for activation and stabilization of the power storage device. For example, the charging/discharging device disclosed in Patent Document 1 includes a charging/discharging machine having a probe and a mounting portion on which a power storage device is mounted. Charging/discharging of the power storage device is performed by bringing a probe into contact with the positive and negative electrode terminals of the power storage device with the power storage device placed on the mounting portion.
ところで、蓄電装置の充放電時では、電極端子にプローブを接触させる際に、電極端子に損傷が生じることがある。こうした損傷は、例えば各製造工程における蓄電装置の温度や膨張状態、充放電電流の違いや、製造工程で用いる装置等自体の不具合によって生じることがある。そうした損傷が生じないようにするためには、損傷が生じた工程についての対応処置や、工程で用いる装置等のメンテナンスを行う必要がある。しかしながら、蓄電装置の充放電を複数の製造工程で行った後に電極端子の損傷を発見したとしても、複数の製造工程のどの工程で損傷が生じたのか、あるいは、工程で用いるどの装置等で損傷が生じたのか判断できない。この場合には、電極端子の損傷を抑制すべく、蓄電装置の製造工程全体の見直しや、蓄電装置の製造に用いる装置全体でメンテナンスを行うこととなり、メンテナンスに長時間かかる。 By the way, during charging and discharging of the power storage device, the electrode terminal may be damaged when the probe is brought into contact with the electrode terminal. Such damage may occur due to, for example, the temperature and expansion state of the power storage device in each manufacturing process, a difference in charging/discharging current, or a defect in the device itself used in the manufacturing process. In order to prevent such damage from occurring, it is necessary to take measures to deal with the damaged process and to perform maintenance on the devices used in the process. However, even if the electrode terminal is found to be damaged after charging/discharging the power storage device in multiple manufacturing processes, which process in the multiple manufacturing processes caused the damage, or damage in any device used in the process, etc. I can't judge whether something happened. In this case, in order to suppress damage to the electrode terminals, the entire manufacturing process of the power storage device is reviewed and maintenance is performed on the entire device used for manufacturing the power storage device, which requires a long time for maintenance.
本発明は、上記課題を解決するためになされたものであり、その目的は、蓄電装置の充放電に伴って電極端子に損傷が生じた際に、メンテナンスにかかる時間を短縮できる蓄電装置の充放電方法を提供することにある。 The present invention has been made to solve the above problems, and an object thereof is to charge a power storage device that can reduce the time required for maintenance when the electrode terminals are damaged due to charge/discharge of the power storage device. It is to provide a discharging method.
上記課題を解決する蓄電装置の充放電方法は、載置部に蓄電装置を載置させた状態で前記蓄電装置の充電又は放電を行う充放電機のプローブを前記蓄電装置の正の電極端子及び負の電極端子それぞれに接触させて行う前記蓄電装置の充放電を前記蓄電装置の複数の製造工程で行う蓄電装置の充放電方法であって、前記蓄電装置の充放電時の前記プローブと前記電極端子との接触位置が、前記製造工程毎に決まっていて、且つ前記製造工程毎に異なることを特徴とする。 A method for charging and discharging a power storage device that solves the above-mentioned problems is a probe of a charger/discharger that charges or discharges the power storage device with a power storage device mounted on a mounting portion, and a positive electrode terminal of the power storage device. A charging/discharging method of a power storage device, wherein charging/discharging of the power storage device is performed in a plurality of manufacturing steps of the power storage device, the probe and the electrode being used for charging/discharging the power storage device. It is characterized in that the contact position with the terminal is determined for each manufacturing process and is different for each manufacturing process.
上記構成によれば、電極端子におけるプローブの接触位置が製造工程毎に決まっていて、且つ製造工程毎に異なることになる。そのため、複数の製造工程において蓄電装置の充放電を行った後に電極端子の損傷を発見したとしても、その損傷位置から損傷が生じた工程を判断することができる。したがって、複数の製造工程のうちの特定の工程について対応処理を行えばよいため、メンテナンスにかかる時間を短縮できる。 According to the above configuration, the contact position of the probe on the electrode terminal is determined for each manufacturing process, and also differs for each manufacturing process. Therefore, even if the electrode terminal is found to be damaged after charging/discharging the power storage device in a plurality of manufacturing processes, it is possible to determine the process in which the damage has occurred from the damaged position. Therefore, since it is only necessary to perform the corresponding process for a specific process among the plurality of manufacturing processes, it is possible to reduce the time required for maintenance.
蓄電装置の充放電方法において、前記載置部を複数備え、前記プローブは前記載置部に対応してそれぞれ設けられ、前記製造工程毎で異なる前記載置部に前記蓄電装置を載置して前記蓄電装置の充放電を行うことが好ましい。 In the charging/discharging method of a power storage device, a plurality of the storage units are provided, the probes are provided corresponding to the storage units, respectively, and the storage device is mounted on the storage unit different for each manufacturing process. It is preferable to charge and discharge the power storage device.
上記構成では、各製造工程で用いる載置部が異なるため、損傷が生じた工程のみならず、損傷が生じた載置部及びプローブの組み合わせをも特定することができる。そのため、複数の製造工程において蓄電装置の充放電を行った後に電極端子の損傷を発見したときには、その損傷位置から損傷が生じた載置部及びプローブの組み合わせを判断することができる。したがって、該当の組み合わせを有する装置等に対してのみメンテナンスを行えばよいため、メンテナンスにかかる時間を短縮できる。 In the above-described configuration, since the mounting section used in each manufacturing process is different, not only the damaged step but also the combination of the damaged mounting section and the probe can be specified. Therefore, when damage to the electrode terminals is found after charging/discharging the power storage device in a plurality of manufacturing processes, it is possible to determine the combination of the mounting portion and the probe in which the damage has occurred from the damaged position. Therefore, since it is only necessary to perform maintenance on the device or the like having the corresponding combination, the time required for maintenance can be shortened.
蓄電装置の充放電方法において、前記載置部を複数備え、前記プローブは前記載置部に対応してそれぞれ設けられ、前記製造工程と、各製造工程で用いられた前記載置部とを関連付けることが好ましい。 In a charging/discharging method for a power storage device, a plurality of the above-mentioned mounting portions are provided, the probes are respectively provided corresponding to the above-mentioned mounting portions, and the manufacturing steps are associated with the above-described mounting portions used in each manufacturing step. Preferably.
上記構成では、製造工程と各製造工程で用いられた載置部とが関連付けられるため、損傷が生じた工程のみならず、損傷が生じた載置部及びプローブの組み合わせをも特定することができる。そのため、複数の製造工程において蓄電装置の充放電を行った後に電極端子の損傷を発見したときには、その損傷位置から損傷が生じた載置部及びプローブの組み合わせを判断することができる。したがって、該当の組み合わせを有する装置等に対してのみメンテナンスを行えばよいため、メンテナンスにかかる時間を短縮できる。 In the above configuration, since the manufacturing process and the mounting portion used in each manufacturing process are associated with each other, not only the damaged process but also the damaged mounting part and probe combination can be specified. .. Therefore, when damage to the electrode terminals is found after charging/discharging the power storage device in a plurality of manufacturing steps, it is possible to determine the combination of the mounting portion and the probe in which the damage has occurred from the damaged position. Therefore, since it is only necessary to perform maintenance on the device or the like having the corresponding combination, it is possible to shorten the time required for maintenance.
蓄電装置の充放電方法において、前記蓄電装置の充放電時における前記電極端子での前記プローブの接触位置が複数の前記製造工程で重ならないように設定されていることが好ましい。 In the charging/discharging method of the power storage device, it is preferable that the contact position of the probe at the electrode terminal during charging/discharging of the power storage device is set so as not to overlap in the plurality of manufacturing steps.
上記構成によれば、電極端子の損傷を発見したときに、その損傷位置から損傷が生じた製造工程を１つに特定することができるため、その後のメンテナンスにかかる時間をより短縮できる。 According to the above configuration, when the damage to the electrode terminal is found, it is possible to specify one manufacturing process in which the damage has occurred from the damaged position, so that the time required for the subsequent maintenance can be further shortened.
上記課題を解決する蓄電装置の充放電方法は、載置部に蓄電装置を載置させた状態で前記蓄電装置の充電又は放電を行う充放電機のプローブを前記蓄電装置の正の電極端子及び負の電極端子それぞれに接触させて行う前記蓄電装置の充放電を前記蓄電装置の製造工程で行う蓄電装置の充放電方法であって、前記載置部を複数備え、前記プローブは前記載置部に対応してそれぞれ設けられ、前記蓄電装置の充放電時の前記プローブと前記電極端子との接触位置が、前記載置部毎に決まっていて、且つ前記載置部毎に異なることを特徴とする。 A method for charging and discharging a power storage device that solves the above-mentioned problems is a probe of a charger/discharger that charges or discharges the power storage device with a power storage device mounted on a mounting portion, and a positive electrode terminal of the power storage device. A charging/discharging method of a power storage device, wherein charging/discharging of the power storage device is performed in a process of manufacturing the power storage device, the charging/discharging of the power storage device being performed by contacting each of the negative electrode terminals, the probe including a plurality of mounting portions, The contact position between the probe and the electrode terminal at the time of charging/discharging the power storage device is determined for each mounting part, and is different for each mounting part. To do.
上記構成によれば、電極端子におけるプローブの接触位置が載置部毎に決まっていて、且つ載置部毎に異なることになる。そのため、複数の載置部を用いて製造工程を行った場合において蓄電装置の充放電を行った後に電極端子の損傷を発見したとしても、その損傷位置から損傷が生じた載置部を判断することができる。したがって、複数の製造工程のうちの特定の載置部を有する装置等のみメンテナンスを行えばよいため、メンテナンスにかかる時間を短縮できる。 According to the above configuration, the contact position of the probe on the electrode terminal is determined for each mounting portion and is different for each mounting portion. Therefore, in the case where a manufacturing process is performed using a plurality of mounting portions, even if the electrode terminal is found to be damaged after charging/discharging the power storage device, the damaged mounting portion is determined from the damaged position. be able to. Therefore, only the device or the like having a specific mounting portion of the plurality of manufacturing processes need be maintained, and thus the time required for the maintenance can be shortened.
この発明によれば、蓄電装置の充放電に伴って電極端子に損傷が生じた際に、メンテナンスにかかる時間を短縮できる。 According to the present invention, when the electrode terminal is damaged due to charging and discharging of the power storage device, the time required for maintenance can be shortened.
以下、蓄電装置の充放電方法を二次電池の充放電方法に具体化した一実施形態について図１〜図８を用いて説明する。
まず、本実施形態の二次電池の充放電方法によって充放電が行われる二次電池について説明する。
Hereinafter, an embodiment in which a charging/discharging method for a power storage device is embodied as a charging/discharging method for a secondary battery will be described with reference to FIGS. 1 to 8.
First, a secondary battery that is charged/discharged by the secondary battery charging/discharging method of the present embodiment will be described.
図１に示すように、蓄電装置としての二次電池１０は、ケース１１と、ケース１１に収容された電極組立体１２とを備える。また、ケース１１は、直方体状のケース本体１３と、ケース本体１３の開口部１３ａを閉塞する矩形平板状の蓋１４とを有する。本実施形態の二次電池１０は、その外観が角型をなす角型電池である。ケース１１を構成するケース本体１３と蓋１４は、何れも金属製（例えば、ステンレス製やアルミニウム製）である。また、本実施形態の二次電池１０は、リチウムイオン電池である。 As shown in FIG. 1, a secondary battery 10 as a power storage device includes a case 11 and an electrode assembly 12 housed in the case 11. The case 11 has a rectangular parallelepiped case body 13 and a rectangular flat plate-shaped lid 14 that closes the opening 13 a of the case body 13. The secondary battery 10 of the present embodiment is a prismatic battery whose appearance is prismatic. The case main body 13 and the lid 14 that form the case 11 are both made of metal (for example, stainless steel or aluminum). Further, the secondary battery 10 of the present embodiment is a lithium ion battery.
ケース本体１３は、矩形板状の底壁１３ｂと、底壁１３ｂの一対の長側縁部から立設された一対の長側壁１３ｃと、底壁１３ｂの一対の短側縁部から立設された一対の短側壁１３ｄとを有する。蓋１４において、ケース１１の内側に臨む面を内面１４ａとし、ケース１１の外側に臨むとともに内面１４ａとは反対側の面を外面１４ｂとする。二次電池１０において、ケース１１の底壁１３ｂの長側縁部の延びる方向（長手方向）を幅方向Ｘとし、底壁１３ｂの短側縁部の延びる方向（短手方向）を厚み方向Ｙとし、底壁１３ｂから長側壁１３ｃ及び短側壁１３ｄが立設する方向を高さ方向Ｚとする。 The case body 13 is provided with a rectangular plate-shaped bottom wall 13b, a pair of long side walls 13c erected from a pair of long side edges of the bottom wall 13b, and a pair of short side edges of the bottom wall 13b. And a pair of short side walls 13d. In the lid 14, the surface facing the inside of the case 11 is an inner surface 14a, and the surface facing the outside of the case 11 and the surface opposite to the inner surface 14a is an outer surface 14b. In the secondary battery 10, the direction in which the long side edge of the bottom wall 13b of the case 11 extends (longitudinal direction) is the width direction X, and the direction in which the short side edge of the bottom wall 13b extends (short direction) is the thickness direction Y. The direction in which the long side wall 13c and the short side wall 13d are erected from the bottom wall 13b is defined as the height direction Z.
電極組立体１２は、複数の正極電極と、複数の負極電極と、複数のセパレータとを備える。電極組立体１２は、正極電極と負極電極との間にセパレータを介在させ、かつ相互に絶縁させた状態で積層した層状構造を有する。正極電極は、矩形シート状の正極金属箔（例えばアルミニウム箔）と、正極金属箔の両面に存在する正極活物質層とを有する。正極電極は、正極金属箔の一辺の一部から突出した形状の正極のタブを有する。正極のタブは、正極活物質層が存在せず、正極金属箔そのもので構成されている。同様に、負極電極は、矩形シート状の負極金属箔（例えば銅箔）と、負極金属箔の両面に存在する負極活物質層とを有する。負極電極は、負極金属箔の一辺の一部から突出した形状の負極のタブを有する。負極のタブは、負極活物質層が存在せず、負極金属箔そのもので構成されている。 The electrode assembly 12 includes a plurality of positive electrodes, a plurality of negative electrodes, and a plurality of separators. The electrode assembly 12 has a layered structure in which a separator is interposed between a positive electrode and a negative electrode and they are laminated in a state of being insulated from each other. The positive electrode has a rectangular sheet-shaped positive metal foil (eg, aluminum foil) and positive electrode active material layers present on both surfaces of the positive metal foil. The positive electrode has a tab for the positive electrode having a shape protruding from a part of one side of the positive metal foil. The tab of the positive electrode does not have the positive electrode active material layer and is composed of the positive electrode metal foil itself. Similarly, the negative electrode has a rectangular sheet-shaped negative metal foil (for example, copper foil) and negative electrode active material layers present on both surfaces of the negative metal foil. The negative electrode has a tab for the negative electrode that is formed so as to project from a part of one side of the negative electrode metal foil. The tab of the negative electrode does not have the negative electrode active material layer and is composed of the negative electrode metal foil itself.
図２に示すように、電極組立体１２は、正極のタブが積層された正極のタブ群１２ａと、負極のタブが積層された負極のタブ群１２ａとを有する。電極組立体１２は、正極のタブ群１２ａ及び負極のタブ群１２ａが存在する端面にタブ側端面１２ｂを有する。ケース１１に電極組立体１２が収容された状態において、タブ側端面１２ｂは、蓋１４の内面１４ａと対向する。また、二次電池１０は、蓋１４の内面１４ａに沿うようにして、蓋１４の内面１４ａと電極組立体１２のタブ側端面１２ｂとの間に配置された導電部材１７を備える。正極の導電部材１７には、正極のタブ群１２ａが接合され、負極の導電部材１７には、負極のタブ群１２ａが接合されている。 As shown in FIG. 2, the electrode assembly 12 includes a positive electrode tab group 12a in which positive electrode tabs are stacked and a negative electrode tab group 12a in which negative electrode tabs are stacked. The electrode assembly 12 has a tab-side end face 12b on the end face where the positive electrode tab group 12a and the negative electrode tab group 12a are present. When the electrode assembly 12 is housed in the case 11, the tab-side end surface 12b faces the inner surface 14a of the lid 14. Further, the secondary battery 10 includes a conductive member 17 arranged along the inner surface 14 a of the lid 14 and between the inner surface 14 a of the lid 14 and the tab-side end surface 12 b of the electrode assembly 12. The positive electrode tab group 12a is joined to the positive electrode conductive member 17, and the negative electrode tab group 12a is joined to the negative electrode conductive member 17.
二次電池１０は、電極組立体１２から電気を取り出すための正極及び負極（正負）の電極端子１６を備える。正極の電極端子１６は、蓋１４の幅方向Ｘの一端側に配置され、負極の電極端子１６は、蓋１４の幅方向Ｘの他端側に配置される。正極及び負極の電極端子１６は、導電部材１７に接続された引出端子１８を備える。各引出端子１８は、板状の基部１８ａと、基部１８ａから突出する軸部１８ｂとを有する。正極の引出端子１８の基部１８ａは、正極の導電部材１７と電気的に接続され、負極の引出端子１８の基部１８ａは、負極の導電部材１７と電気的に接続されている。各引出端子１８の軸部１８ｂは、蓋１４を貫通してケース１１の外部に突出する。 The secondary battery 10 includes positive and negative (positive/negative) electrode terminals 16 for extracting electricity from the electrode assembly 12. The positive electrode terminal 16 is arranged on one end side of the lid 14 in the width direction X, and the negative electrode terminal 16 is arranged on the other end side of the lid 14 in the width direction X. The positive and negative electrode terminals 16 include lead terminals 18 connected to the conductive member 17. Each lead-out terminal 18 has a plate-shaped base portion 18a and a shaft portion 18b protruding from the base portion 18a. The base portion 18a of the positive electrode lead terminal 18 is electrically connected to the positive electrode conductive member 17, and the base portion 18a of the negative electrode lead terminal 18 is electrically connected to the negative electrode conductive member 17. The shaft portion 18b of each lead terminal 18 penetrates the lid 14 and projects to the outside of the case 11.
図１に示すように、正極及び負極の電極端子１６はそれぞれ、ケース１１の外部で引出端子１８の軸部１８ｂと電気的に接続された板状の端子接合部材１９と、端子接合部材１９と電気的に接続された外部接続端子２０とを備える。正極の電極端子１６における端子接合部材１９は例えばアルミニウムからなり、負極の電極端子１６における端子接合部材１９は例えば銅からなる。外部接続端子２０には、隣り合う二次電池１０同士を電気的に接続してモジュール化するためのバスバーが固定可能である。各電極端子１６は、電極組立体１２とバスバーとを電気的に接続している。 As shown in FIG. 1, the positive electrode electrode 16 and the negative electrode terminal 16 are respectively a plate-shaped terminal joining member 19 electrically connected to the shaft portion 18 b of the lead terminal 18 outside the case 11, and a terminal joining member 19. The external connection terminal 20 electrically connected. The terminal joining member 19 in the positive electrode terminal 16 is made of aluminum, for example, and the terminal joining member 19 in the negative electrode terminal 16 is made of copper, for example. A bus bar for electrically connecting adjacent secondary batteries 10 to each other to form a module can be fixed to the external connection terminal 20. Each electrode terminal 16 electrically connects the electrode assembly 12 and the bus bar.
図２に示すように、二次電池１０は、端子接合部材１９を蓋１４から絶縁する外側絶縁部材２１を蓋１４の外面１４ｂに備える。また、二次電池１０は、引出端子１８の基部１８ａを蓋１４から絶縁する内側絶縁部材２２をケース１１の内部に備える。そして、引出端子１８の軸部１８ｂが、内側絶縁部材２２、蓋１４、外側絶縁部材２１、及び端子接合部材１９を貫通する。軸部１８ｂにおけるケース１１の外部に突出した先端部がかしめられることにより、電極端子１６、外側絶縁部材２１、及び内側絶縁部材２２が蓋１４と一体化されている。また、こうして一体化されることにより、電極端子１６は電極組立体１２と電気的に接続される。 As shown in FIG. 2, the secondary battery 10 includes an outer insulating member 21 that insulates the terminal joining member 19 from the lid 14 on the outer surface 14 b of the lid 14. Further, the secondary battery 10 includes an inner insulating member 22 that insulates the base portion 18 a of the lead terminal 18 from the lid 14 inside the case 11. Then, the shaft portion 18b of the lead terminal 18 penetrates the inner insulating member 22, the lid 14, the outer insulating member 21, and the terminal joining member 19. The electrode terminal 16, the outer insulating member 21, and the inner insulating member 22 are integrated with the lid 14 by crimping the tip portion of the shaft portion 18b that protrudes to the outside of the case 11. Further, by being integrated in this way, the electrode terminal 16 is electrically connected to the electrode assembly 12.
図３に示すように、二次電池１０の充放電を行うに際しては、複数の二次電池１０が拘束治具３０によって拘束される。拘束治具３０は、並設された二次電池１０の間に配置されるスペーサ３１を備える。スペーサ３１は、平板状の第１板部３２と、幅方向Ｘにおける第１板部３２の両端部から第１板部３２の厚み方向の両側に延びる板状の第２板部３３と、を備える。スペーサ３１は、二次電池１０における蓋１４の外面１４ｂ側から高さ方向Ｚに見たときにＨ字状である。並設された複数の二次電池１０において、厚み方向Ｙにおける隣り合う二次電池１０の間にスペーサ３１が介在する。複数の二次電池１０のうち、互いに対向する長側壁１３ｃの間にスペーサ３１の第１板部３２が配設され、隣り合う二次電池１０の短側壁１３ｄに沿ってスペーサ３１の第２板部３３が配設される。各二次電池１０においては、厚み方向Ｙにて各二次電池１０の両側に位置する２つのスペーサ３１の第２板部３３によって、短側壁１３ｄがケース１１の外側から覆われている。 As shown in FIG. 3, when the secondary battery 10 is charged and discharged, the plurality of secondary batteries 10 are constrained by the constraining jig 30. The restraint jig 30 includes a spacer 31 arranged between the secondary batteries 10 arranged in parallel. The spacer 31 includes a flat plate-shaped first plate portion 32 and a plate-shaped second plate portion 33 extending from both ends of the first plate portion 32 in the width direction X to both sides in the thickness direction of the first plate portion 32. Prepare The spacer 31 is H-shaped when viewed in the height direction Z from the outer surface 14b side of the lid 14 of the secondary battery 10. In the plurality of secondary batteries 10 arranged in parallel, the spacer 31 is interposed between the adjacent secondary batteries 10 in the thickness direction Y. Of the plurality of secondary batteries 10, the first plate portion 32 of the spacer 31 is disposed between the long side walls 13c facing each other, and the second plate of the spacer 31 is arranged along the short side walls 13d of the adjacent secondary batteries 10. The part 33 is provided. In each secondary battery 10, the short side wall 13d is covered from the outside of the case 11 by the second plate portions 33 of the two spacers 31 located on both sides of each secondary battery 10 in the thickness direction Y.
また、拘束治具３０は、四角箱状の収容部材３５を備える。収容部材３５は金属製（例えば、アルミニウム製やアルミニウム合金製）である。スペーサ３１が間に介在した状態で並設された複数の二次電池１０は、各二次電池１０の厚み方向Ｙと収容部材３５の長手方向とが一致するように収容部材３５の内部に収容される。 Further, the restraint jig 30 includes a box-shaped accommodation member 35. The housing member 35 is made of metal (for example, aluminum or aluminum alloy). The plurality of secondary batteries 10 arranged side by side with the spacers 31 interposed therebetween are housed inside the housing member 35 such that the thickness direction Y of each secondary battery 10 and the longitudinal direction of the housing member 35 coincide with each other. To be done.
なお、複数の二次電池１０及びスペーサ３１が収容部材３５に収容される際には、厚み方向Ｙの一端に配設されたスペーサ３１の第１板部３２と、第１板部３２と対向する収容部材３５の壁部との隙間の大きさに応じて、厚み調節部材（図示略）が適宜挿入される。上記隙間に相当する厚み調節部材が上記隙間に挿入されることにより、複数の二次電池１０の厚み方向Ｙへの移動が抑制される。こうして拘束治具３０によって拘束された複数の二次電池１０は、充放電装置４０に搬送される。 When the plurality of secondary batteries 10 and the spacer 31 are housed in the housing member 35, the first plate portion 32 of the spacer 31 disposed at one end in the thickness direction Y faces the first plate portion 32. A thickness adjusting member (not shown) is appropriately inserted according to the size of the gap between the housing member 35 and the wall portion. By inserting the thickness adjusting member corresponding to the gap into the gap, movement of the plurality of secondary batteries 10 in the thickness direction Y is suppressed. The plurality of secondary batteries 10 thus restrained by the restraint jig 30 are conveyed to the charging/discharging device 40.
次に、二次電池１０の充電又は放電を行うための充放電装置４０について説明する。
図４に示すように、充放電装置４０は、プローブ４１を有する充放電機４２を備える。充放電機４２においては、１つの二次電池１０に対して一対のプローブ４１が対応し、その一対のプローブ４１が複数並設されている。各プローブ４１の上部は端子台４３に接続されている。
Next, the charging/discharging device 40 for charging or discharging the secondary battery 10 will be described.
As shown in FIG. 4, the charging/discharging device 40 includes a charging/discharging machine 42 having a probe 41. In the charger/discharger 42, a pair of probes 41 correspond to one secondary battery 10, and a plurality of the pair of probes 41 are arranged in parallel. The upper portion of each probe 41 is connected to the terminal block 43.
充放電装置４０は、平板状の載置台４５と、載置台４５の下部に位置する平板状の基礎台４７と、基礎台４７上に位置するとともに載置台４５を昇降可能な昇降アクチュエータ４８と、を備える。昇降アクチュエータ４８は、昇降シリンダ４８ａと、昇降シリンダ４８ａの内部から高さ方向Ｚの上側に突出可能な昇降ロッド４８ｂ（図５）と、を有する。昇降アクチュエータ４８において、昇降シリンダ４８ａの内部からの昇降ロッド４８ｂの突出量が調整されることにより、高さ方向Ｚにおける載置台４５の位置が調整される。 The charging/discharging device 40 includes a plate-shaped mounting table 45, a plate-shaped base table 47 located below the mounting table 45, and an elevating actuator 48 that is located on the base table 47 and that can lift the mounting table 45. Equipped with. The elevating actuator 48 includes an elevating cylinder 48a and an elevating rod 48b (FIG. 5) capable of protruding upward from the inside of the elevating cylinder 48a in the height direction Z. In the lift actuator 48, the position of the mounting table 45 in the height direction Z is adjusted by adjusting the protrusion amount of the lift rod 48b from the inside of the lift cylinder 48a.
厚み方向Ｙにおける基礎台４７の両端部には支持部４９が固定されている。支持部４９は高さ方向Ｚに延びており、載置台４５を貫通している。載置台４５は、支持部４９に沿って高さ方向Ｚに移動可能である。 Support parts 49 are fixed to both ends of the base 47 in the thickness direction Y. The support portion 49 extends in the height direction Z and penetrates the mounting table 45. The mounting table 45 is movable in the height direction Z along the support portion 49.
充放電装置４０は、載置台４５上に位置するストッパ部５０を備える。ストッパ部５０は、ストッパシリンダ５０ａと、ストッパシリンダ５０ａの内部から厚み方向Ｙの一端側（図４の右側）に突出可能なストッパロッド５０ｂと、ストッパロッド５０ｂの突出方向先端に固定されたストッパ板部５０ｃと、を備える。ストッパシリンダ５０ａからのストッパロッド５０ｂの突出長さが調整されることにより、厚み方向Ｙにおけるストッパ板部５０ｃの位置が調整される。 The charging/discharging device 40 includes a stopper portion 50 located on the mounting table 45. The stopper portion 50 includes a stopper cylinder 50a, a stopper rod 50b capable of protruding from the inside of the stopper cylinder 50a to one end side in the thickness direction Y (right side in FIG. 4), and a stopper plate fixed to the tip of the stopper rod 50b in the protruding direction. And a section 50c. The position of the stopper plate portion 50c in the thickness direction Y is adjusted by adjusting the protruding length of the stopper rod 50b from the stopper cylinder 50a.
二次電池１０の充放電に際しては、拘束治具３０によって拘束された複数の二次電池１０が載置台４５上に載置される。載置台４５のうち、こうして複数の二次電池１０が載置される部分を載置部４６とする。そして本実施形態では、二次電池１０の全製造工程のうち、充放電を行う製造工程において、製造工程毎で共通の充放電装置４０の載置台４５における載置部４６の異なる位置に複数の二次電池１０を載置して二次電池１０の充放電を行っている。 When charging and discharging the secondary battery 10, the plurality of secondary batteries 10 constrained by the constraining jig 30 are mounted on the mounting table 45. A portion of the mounting table 45 on which the plurality of secondary batteries 10 are mounted in this manner is referred to as a mounting portion 46. Further, in the present embodiment, among all the manufacturing steps of the secondary battery 10, in a manufacturing step of performing charging/discharging, a plurality of parts are provided at different positions of the mounting part 46 of the mounting table 45 of the charging/discharging device 40 that is common in each manufacturing step. The secondary battery 10 is placed and the secondary battery 10 is charged and discharged.
次に、二次電池１０の充放電方法について、充放電方法の作用とともに説明する。なお、二次電池１０の充放電に際しては、製造ラインで複数の二次電池１０が製造される。その後、初期充電を行うため、拘束治具３０によって拘束された状態の複数の二次電池１０が充放電装置４０の載置台４５における載置部４６に搬送される。本実施形態では、８つの二次電池１０が厚み方向Ｙに互いに並設された状態で拘束治具３０によって拘束されて載置部４６に載置される。 Next, the charging/discharging method of the secondary battery 10 will be described together with the operation of the charging/discharging method. When the secondary battery 10 is charged and discharged, a plurality of secondary batteries 10 are manufactured on the manufacturing line. After that, in order to perform the initial charging, the plurality of secondary batteries 10 in a state of being restrained by the restraint jig 30 are transported to the mounting portion 46 of the mounting table 45 of the charging/discharging device 40. In the present embodiment, the eight secondary batteries 10 are constrained by the constraining jig 30 and mounted on the mounting part 46 in a state where they are arranged side by side in the thickness direction Y.
図５に示すように、初期充電工程では、拘束治具３０によって拘束された複数の二次電池１０が載置台４５のおける載置部４６に載置される。この際には、複数の二次電池１０が厚み方向Ｙの一端側から他端側（図５の左側）へと載置台４５上を移動される。そして、厚み方向Ｙの他端側における収容部材３５の端部がストッパ板部５０ｃに当接することにより、複数の二次電池１０が載置部４６に載置される。 As shown in FIG. 5, in the initial charging step, the plurality of secondary batteries 10 constrained by the constraining jig 30 are mounted on the mounting portion 46 of the mounting table 45. At this time, the plurality of secondary batteries 10 are moved on the mounting table 45 from one end side in the thickness direction Y to the other end side (left side in FIG. 5). Then, the end of the accommodation member 35 on the other end side in the thickness direction Y is brought into contact with the stopper plate portion 50c, so that the plurality of secondary batteries 10 are mounted on the mounting portion 46.
載置台４５における複数の二次電池１０の厚み方向Ｙでの位置は、ストッパ板部５０ｃの位置に応じた位置となる。ストッパ板部５０ｃの位置に応じて、複数の二次電池１０とプローブ４１との相対位置が所定の位置に設定される。つまり、初期充電工程において、複数の二次電池１０における正負両極の電極端子１６の端子接合部材１９とプローブ４１との接触位置が所定の位置に決まっている。具体的には、厚み方向Ｙにおいて、端子接合部材１９の中間位置より一方側（図５の右側）の部分であって、幅方向Ｘにおける端子接合部材１９の外側端部が、プローブ４１と高さ方向Ｚにおいて対向するようになる。 The positions of the plurality of secondary batteries 10 in the mounting table 45 in the thickness direction Y are positions corresponding to the positions of the stopper plate portions 50c. The relative position between the plurality of secondary batteries 10 and the probe 41 is set to a predetermined position according to the position of the stopper plate 50c. That is, in the initial charging step, the contact position between the terminal 41 of the positive and negative electrode terminals 16 of the plurality of secondary batteries 10 and the probe 41 is set to a predetermined position. Specifically, in the thickness direction Y, the portion on the one side (right side in FIG. 5) from the intermediate position of the terminal joining member 19 and the outer end of the terminal joining member 19 in the width direction X is higher than the probe 41. They come to face each other in the vertical direction Z.
そして、充放電装置４０において各二次電池１０に対して初期充電工程を行う。初期充電工程に際しては、昇降シリンダ４８ａの内部からの昇降ロッド４８ｂが突出することにより、高さ方向Ｚにおいて載置台４５の位置が上方に移動される。これにより、複数の二次電池１０における正負両極の電極端子１６の端子接合部材１９に一対のプローブ４１をそれぞれ接触させる。正極の電極端子１６の端子接合部材１９に一対のプローブ４１のうちの一方を接触させるとともに、負極の電極端子１６における端子接合部材１９に一対のプローブ４１のうちの他方を接触させる。これにより、正負各極の電極端子１６にプローブ４１が接続された状態で、各二次電池１０の初期充電が行われる。 Then, the charging/discharging device 40 performs the initial charging process on each secondary battery 10. In the initial charging process, the position of the mounting table 45 is moved upward in the height direction Z by the lifting rod 48b protruding from the inside of the lifting cylinder 48a. As a result, the pair of probes 41 are brought into contact with the terminal joining members 19 of the positive and negative electrode terminals 16 of the plurality of secondary batteries 10. One of the pair of probes 41 is brought into contact with the terminal joining member 19 of the positive electrode terminal 16, and the other of the pair of probes 41 is brought into contact with the terminal joining member 19 of the negative electrode terminal 16. As a result, the initial charging of each secondary battery 10 is performed with the probe 41 connected to the positive and negative electrode terminals 16.
図６に示すように、正負両極の電極端子１６の端子接合部材１９においては、図６に二点鎖線で示すように、厚み方向Ｙにおける端子接合部材１９の中間位置より一方側（図６の右側）の部分であって、幅方向Ｘの外側端部での接触位置Ｔ１にてプローブ４１が接触する。本実施形態では、引出端子１８及び外部接続端子２０のいずれにもプローブ４１が接触しない。そして、初期充電工程において、正負各極の電極端子１６にプローブ４１が接続された状態で各二次電池１０の初期充電が行われる。 As shown in FIG. 6, in the terminal joining member 19 of the positive and negative electrode terminals 16, as shown by the alternate long and two short dashes line in FIG. 6, one side of the intermediate position of the terminal joining member 19 in the thickness direction Y (see FIG. 6). The probe 41 contacts at the contact position T1 at the outer end in the width direction X, which is the right side portion. In the present embodiment, the probe 41 does not come into contact with either the extraction terminal 18 or the external connection terminal 20. Then, in the initial charging step, the initial charging of each secondary battery 10 is performed with the probe 41 connected to the electrode terminals 16 of the positive and negative electrodes.
図５に示すように、初期充電工程において各二次電池１０の初期充電が行われた後は、昇降シリンダ４８ａに昇降ロッド４８ｂが埋没することにより、高さ方向Ｚにおいて載置台４５が下部に移動する。これにより、高さ方向Ｚにおいて各二次電池１０がプローブ４１から離れるため、各二次電池１０における正負両極の電極端子１６の端子接合部材１９からプローブ４１が離れる。 As shown in FIG. 5, after the initial charging of each secondary battery 10 in the initial charging step, the elevating rod 48b is buried in the elevating cylinder 48a, so that the mounting table 45 moves downward in the height direction Z. Moving. As a result, each secondary battery 10 separates from the probe 41 in the height direction Z, so that the probe 41 separates from the terminal joining member 19 of the positive and negative electrode terminals 16 of each secondary battery 10.
初期充電工程後、拘束治具３０によって拘束された状態で、複数の二次電池１０を載置台４５の載置部４６から取り出す。載置部４６から取り出された複数の二次電池１０は、製造ラインに搬送される。そして、初期充電工程以降の所定の製造工程を経て、複数の二次電池１０は再び充放電装置４０に搬送される。 After the initial charging process, the plurality of secondary batteries 10 are taken out from the mounting portion 46 of the mounting table 45 while being constrained by the constraining jig 30. The plurality of secondary batteries 10 taken out from the mounting portion 46 are transported to the manufacturing line. Then, through the predetermined manufacturing process after the initial charging process, the plurality of secondary batteries 10 are transported to the charging/discharging device 40 again.
つづいて、充放電装置４０において二次電池１０の性能を評価するための特性評価工程を行う。特性評価工程では、一定の条件で充放電を繰り返すことにより二次電池１０の電池寿命を判断する。なお、特性評価工程を行うに際しては、図７に示すように、初期充電工程と共通の充放電装置４０の載置台４５における載置部４６の、先の初期充電工程の際に載置された位置とは異なる位置に複数の二次電池１０が搬送される。 Subsequently, a characteristic evaluation step for evaluating the performance of the secondary battery 10 in the charging/discharging device 40 is performed. In the characteristic evaluation step, the battery life of the secondary battery 10 is determined by repeating charging and discharging under constant conditions. When performing the characteristic evaluation step, as shown in FIG. 7, the mounting portion 46 of the mounting table 45 of the charging/discharging device 40 common to the initial charging step was placed during the previous initial charging step. A plurality of secondary batteries 10 are conveyed to a position different from the position.
図７に示すように、特性評価工程では、初期充電工程の際と同様に、厚み方向Ｙの他端側における収容部材３５の端部がストッパ板部５０ｃに当接することにより、複数の二次電池１０が載置部４６に載置される。そして、載置台４５における複数の二次電池１０の厚み方向Ｙでの位置は、ストッパ板部５０ｃの位置に応じた位置となる。 As shown in FIG. 7, in the characteristic evaluation step, as in the initial charging step, the end portion of the accommodation member 35 on the other end side in the thickness direction Y abuts on the stopper plate portion 50c, so that a plurality of secondary plates are formed. The battery 10 is placed on the placing section 46. Then, the positions of the plurality of secondary batteries 10 in the mounting table 45 in the thickness direction Y are positions corresponding to the positions of the stopper plate portions 50c.
なお、特性評価工程においては、厚み方向Ｙにおけるストッパ板部５０ｃの位置が上記初期充電工程でのストッパ板部５０ｃの位置から厚み方向Ｙの一方側（図７の右側）にずれた位置に設定されている。そして、こうしたストッパ板部５０ｃの位置に応じて、複数の二次電池１０とプローブ４１との相対位置が、初期充電工程での複数の二次電池１０とプローブ４１との相対位置とは異なる位置である所定の位置に設定される。つまり、特性評価工程において、複数の二次電池１０における正負両極の電極端子１６の端子接合部材１９とプローブ４１との接触位置が、初期充電工程での複数の二次電池１０における正負両極の電極端子１６の端子接合部材１９とプローブ４１との接触位置とは異なる所定の位置に決まっている。具体的には、厚み方向Ｙにおいて、端子接合部材１９の中間位置より他方側（図７の左側）の部分であって、幅方向Ｘにおける端子接合部材１９の外側端部が、プローブ４１と高さ方向Ｚにおいて対向するようになる。 In the characteristic evaluation step, the position of the stopper plate portion 50c in the thickness direction Y is set to a position displaced from the position of the stopper plate portion 50c in the initial charging step to one side in the thickness direction Y (right side in FIG. 7). Has been done. Then, depending on the position of the stopper plate portion 50c, the relative position between the plurality of secondary batteries 10 and the probe 41 is different from the relative position between the plurality of secondary batteries 10 and the probe 41 in the initial charging step. Is set to a predetermined position. That is, in the characteristic evaluation step, the contact positions between the terminal bonding members 19 of the positive and negative electrode terminals 16 of the plurality of secondary batteries 10 and the probe 41 are determined to be the positive and negative electrodes of the plurality of secondary batteries 10 in the initial charging step. The contact position between the terminal joining member 19 of the terminal 16 and the probe 41 is set to a predetermined position different from the contact position. Specifically, in the thickness direction Y, a portion on the other side (left side in FIG. 7) from the intermediate position of the terminal joining member 19 and an outer end portion of the terminal joining member 19 in the width direction X is higher than the probe 41. They come to face each other in the vertical direction Z.
そして、載置台４５の位置が高さ方向Ｚの上方に移動されることにより、各二次電池１０における正負両極の電極端子１６の端子接合部材１９をプローブ４１に接触させる。
図８に示すように、正負両極の電極端子１６の端子接合部材１９においては、図８に二点鎖線で示すように、厚み方向Ｙにおける端子接合部材１９の中間位置より他方側（図８の左側）の部分であって、幅方向Ｘの外側端部での接触位置Ｔ２にてプローブ４１が接触する。こうした特性評価工程において端子接合部材１９でのプローブ４１の接触位置Ｔ２は、初期充電工程におけるプローブ４１の接触位置Ｔ１とは重ならない。また、引出端子１８及び外部接続端子２０のいずれにもプローブ４１が接触しない。そして、特性評価工程において、正負各極の電極端子１６にプローブ４１が接続された状態で各二次電池１０の充放電が行われる。
Then, the position of the mounting table 45 is moved upward in the height direction Z, so that the terminal joining members 19 of the positive and negative electrode terminals 16 of each secondary battery 10 are brought into contact with the probe 41.
As shown in FIG. 8, in the terminal joining member 19 of the positive and negative electrode terminals 16, as shown by the alternate long and two short dashes line in FIG. 8, the other side from the intermediate position of the terminal joining member 19 in the thickness direction Y (see FIG. 8). The probe 41 contacts at the contact position T2 at the outer end in the width direction X, which is the left side portion. In such a characteristic evaluation process, the contact position T2 of the probe 41 on the terminal joining member 19 does not overlap with the contact position T1 of the probe 41 in the initial charging process. Further, the probe 41 does not come into contact with either the extraction terminal 18 or the external connection terminal 20. Then, in the characteristic evaluation step, charging/discharging of each secondary battery 10 is performed in a state where the probes 41 are connected to the electrode terminals 16 of the positive and negative electrodes.
各二次電池１０の充放電が行われた後は、高さ方向Ｚにおいて載置台４５を下部に移動させて、各二次電池１０における正負両極の電極端子１６の端子接合部材１９からプローブ４１を離す。そして、複数の二次電池１０を載置部４６から取り出し、製造ラインに搬送される。 After charging/discharging of each secondary battery 10, the mounting table 45 is moved to the lower part in the height direction Z, and from the terminal joining member 19 of the positive and negative electrode terminals 16 of each secondary battery 10 to the probe 41. Release. Then, the plurality of secondary batteries 10 are taken out from the mounting portion 46 and transported to the manufacturing line.
上記実施形態によれば、以下の効果を得ることができる。
（１−１）電極端子１６におけるプローブ４１の接触位置について、初期充電工程における接触位置Ｔ１と特性評価工程における接触位置Ｔ２とは、端子接合部材１９上での位置が決まっていて、互いに異なる位置である。そのため、複数の製造工程において二次電池１０の充放電を行った後に電極端子１６の損傷を発見したとしても、その損傷位置から損傷が生じた工程を判断することができる。したがって、複数の製造工程のうちの特定の工程について対応処置を行えばよいため、メンテナンスにかかる時間を短縮できる。
According to the above embodiment, the following effects can be obtained.
(1-1) Regarding the contact position of the probe 41 on the electrode terminal 16, the contact position T1 in the initial charging step and the contact position T2 in the characteristic evaluation step have different positions on the terminal joining member 19 and are different from each other. Is. Therefore, even if the electrode terminal 16 is found to be damaged after charging/discharging the secondary battery 10 in a plurality of manufacturing processes, the process in which the damage has occurred can be determined from the damaged position. Therefore, since it is only necessary to take a countermeasure for a specific process among the plurality of manufacturing processes, it is possible to shorten the time required for maintenance.
（１−２）二次電池１０の充放電時における電極端子１６でのプローブ４１の接触位置が初期充電工程と特性評価工程とで重ならない。そのため、電極端子１６の損傷を発見したときに、その損傷位置から損傷が生じた製造工程を１つに特定することができるため、その後のメンテナンスにかかる時間をより短縮できる。 (1-2) The contact position of the probe 41 at the electrode terminal 16 during charging/discharging of the secondary battery 10 does not overlap in the initial charging step and the characteristic evaluation step. Therefore, when the damage to the electrode terminal 16 is found, it is possible to identify one manufacturing process in which the damage has occurred from the damaged position, so that the time required for the subsequent maintenance can be further shortened.
なお、上記実施形態は、以下のように変更して実施することができる。上記実施形態及び以下の変更例は、技術的に矛盾しない範囲で互いに組み合わせて実施することができる。 The above-described embodiment can be modified and implemented as follows. The above-described embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
○ 複数の充放電装置４０を用いるとともに、製造工程毎で異なる充放電装置４０を用いて二次電池１０の充放電を行ってもよい。具体的には、複数の充放電装置４０が、一組の載置台４５及び基礎台４７と、その載置台４５に対応した１つの充放電機４２と、をそれぞれ備える。充放電機４２が複数のプローブ４１を有している。そして、各充放電装置４０では、載置台４５上に拘束治具３０によって拘束された複数の二次電池１０を一組載置可能となっている。すなわち、各充放電装置４０は、載置台４５に１つの載置部４６を備える。そして、充放電装置４０毎で、二次電池１０の充放電が異なるタイミングで行われる。また、充放電装置４０毎で載置台４５におけるストッパ板部５０ｃの位置を異ならせることにより、二次電池１０の充放電時にプローブ４１が接触する電極端子１６の位置が充放電装置４０毎で異なる。こうした形態によれば、上記実施形態での（１−１）及び（１−２）の効果に加えて、以下の効果を得ることができる。 The charging/discharging of the secondary battery 10 may be performed using a plurality of charging/discharging devices 40 and different charging/discharging devices 40 for each manufacturing process. Specifically, the plurality of charging/discharging devices 40 each include a set of a mounting table 45 and a foundation table 47, and one charging/discharging machine 42 corresponding to the mounting table 45. The charger/discharger 42 has a plurality of probes 41. In each charging/discharging device 40, one set of the plurality of secondary batteries 10 constrained by the constraining jig 30 can be mounted on the mounting table 45. That is, each charging/discharging device 40 includes one mounting portion 46 on the mounting table 45. Then, the charging/discharging of the secondary battery 10 is performed at different timings for each charging/discharging device 40. Further, by changing the position of the stopper plate portion 50c on the mounting table 45 for each charging/discharging device 40, the position of the electrode terminal 16 with which the probe 41 contacts when charging/discharging the secondary battery 10 differs for each charging/discharging device 40. .. According to this mode, the following effects can be obtained in addition to the effects (1-1) and (1-2) in the above embodiment.
（２−１）プローブ４１の接触位置Ｔ１，Ｔ２は各製造工程で用いられた充放電装置４０毎に異なるため、充放電装置４０と製造工程とが二次電池１０の充放電時の電極端子１６におけるプローブ４１の接触位置で紐づけられる。そのため、複数の製造工程において二次電池１０の充放電を行った後に電極端子１６の損傷を発見したときには、その損傷位置から損傷が生じた製造工程を特定すると共に、損傷が生じた充放電装置４０を判断することができる。したがって、該当する充放電装置４０に対してのみメンテナンスを行えばよいため、メンテナンスにかかる時間を短縮できる。 (2-1) Since the contact positions T1 and T2 of the probe 41 are different for each charging/discharging device 40 used in each manufacturing process, the charging/discharging device 40 and the manufacturing process are electrode terminals when charging/discharging the secondary battery 10. It is tied at the contact position of the probe 41 in 16. Therefore, when the damage of the electrode terminal 16 is found after charging/discharging the secondary battery 10 in a plurality of manufacturing processes, the manufacturing process in which the damage has occurred is identified from the damaged position, and the charging/discharging device in which the damage has occurred is identified. 40 can be determined. Therefore, since the maintenance needs to be performed only for the corresponding charging/discharging device 40, the time required for the maintenance can be shortened.
○ 載置台４５に複数の載置部４６を備えた充放電装置４０を用いるとともに、製造工程毎に異なる載置部４６を用いて二次電池１０の充放電を行ってもよい。具体的には、充放電機４２の一対のプローブ４１は、載置台４５における複数の載置部４６のそれぞれに複数ずつ対応している。そして、各載置部４６では、載置部４６上に拘束治具３０によって拘束された複数の二次電池１０を一組載置可能となっている。そして、載置部４６毎で、二次電池１０の充放電が同じタイミングで行われる。また、載置部４６毎で載置台４５におけるストッパ板部５０ｃの位置を異ならせることにより、二次電池１０の充放電時にプローブ４１が接触する電極端子１６の位置が載置部４６毎で異なる。こうした形態によれば、上記実施形態での（１−１）及び（１−２）の効果に加えて、以下の効果を得ることができる。 The charging/discharging device 40 including the plurality of mounting portions 46 on the mounting table 45 may be used, and the secondary battery 10 may be charged/discharged by using the mounting portions 46 that are different for each manufacturing process. Specifically, the pair of probes 41 of the charger/discharger 42 correspond to the plurality of mounting portions 46 of the mounting table 45, respectively. Then, in each mounting portion 46, one set of the plurality of secondary batteries 10 constrained by the constraining jig 30 can be mounted on the mounting portion 46. Then, the charging/discharging of the secondary battery 10 is performed at the same timing for each mounting portion 46. Further, by making the position of the stopper plate portion 50c of the mounting table 45 different for each mounting portion 46, the position of the electrode terminal 16 with which the probe 41 contacts when the secondary battery 10 is charged and discharged is different for each mounting portion 46. .. According to this mode, the following effects can be obtained in addition to the effects (1-1) and (1-2) in the above embodiment.
（３−１）プローブ４１の接触位置Ｔ１，Ｔ２は各製造工程で用いられた載置部４６毎に異なるため、載置部４６及びプローブ４１の組み合わせと製造工程とが二次電池１０の充放電時の電極端子１６におけるプローブ４１の接触位置で紐づけられる。そのため、初期充電工程及び特性評価工程において二次電池１０の充放電を行った後に電極端子１６の損傷を発見したときには、その損傷位置から損傷が生じた製造工程を特定すると共に、損傷が生じた載置部４６及びプローブ４１の組み合わせを判断することができる。したがって、充放電装置４０における該当の組み合わせに対してのみメンテナンスを行えばよいため、メンテナンスにかかる時間を短縮できる。 (3-1) Since the contact positions T1 and T2 of the probe 41 are different for each mounting part 46 used in each manufacturing process, the combination of the mounting part 46 and the probe 41 and the manufacturing process charge the secondary battery 10. It is tied at the contact position of the probe 41 on the electrode terminal 16 during discharge. Therefore, when the damage of the electrode terminal 16 is found after charging/discharging the secondary battery 10 in the initial charging process and the characteristic evaluation process, the manufacturing process in which the damage occurs is identified from the damaged position, and the damage occurs. The combination of the mounting portion 46 and the probe 41 can be determined. Therefore, since the maintenance only has to be performed for the corresponding combination in the charging/discharging device 40, the time required for the maintenance can be shortened.
○ プローブ４１の接触位置を製造工程毎ではなく、複数の載置部４６毎あるいは複数の充放電装置４０毎に異なるようにしてもよい。この場合、複数の載置部４６又は充放電装置４０において二次電池１０の充放電を行った後に電極端子１６の損傷を発見したとしても、その損傷位置から損傷が生じた載置部４６とプローブ４１の組み合わせ、あるいは充放電装置４０を判断することができる。したがって、充放電装置４０における該当の載置部４６とプローブ４１の組み合わせ、あるいは充放電装置４０自体に対してのみメンテナンスを行えばよいため、メンテナンスにかかる時間を短縮できる。 The contact position of the probe 41 may be different for each of the plurality of mounting portions 46 or each of the plurality of charging/discharging devices 40, not for each manufacturing process. In this case, even if the electrode terminal 16 is found to be damaged after charging/discharging the secondary battery 10 in the plurality of mounting portions 46 or the charging/discharging device 40, the mounting portion 46 that is damaged from the damaged position is It is possible to determine the combination of the probes 41 or the charging/discharging device 40. Therefore, since it is necessary to perform maintenance only on the combination of the relevant mounting portion 46 and the probe 41 in the charging/discharging device 40 or only the charging/discharging device 40 itself, it is possible to shorten the time required for the maintenance.
○ 複数の載置部４６あるいは充放電装置４０のうち、各製造工程でそれぞれ異なる載置部４６あるいは充放電装置４０を必ず用いることなく、製造工程と各製造工程で用いた載置部４６あるいは充放電装置４０とを都度関連付けてもよい。こうした関連付けは、例えば二次電池１０の充放電の際に、充放電装置４０とは別に記憶部を用いることで行う。具体的には、二次電池１０が載置部４６に載置される度に、その載置された二次電池１０の製造工程を載置部４６毎に、あるいは充放電装置４０毎に記憶部に記憶させる。そして、各載置部４６において、あるいは各充放電装置４０において、載置台４５におけるストッパ板部５０ｃの位置を製造工程毎で異なる位置であって、製造工程毎に決まった位置に設定することにより、プローブ４１の接触位置を製造工程毎に異ならせる。この変更例によって、複数の載置部４６あるいは充放電装置４０を流動的に各製造工程に割り当てることで生産性を高めることができる。さらに、複数の載置部４６又は充放電装置４０において二次電池１０の充放電を行った後に電極端子１６の損傷を発見したとしても、その損傷位置から損傷が生じた製造工程を特定することができる。それと共に、該製造工程に関連付けて記憶された載置部４６又は充放電装置４０から、損傷が生じた載置部４６とプローブ４１の組み合わせ、あるいは充放電装置４０を判断することができる。したがって、充放電装置４０における該当の載置部４６とプローブ４１の組み合わせ、あるいは充放電装置４０自体に対してのみメンテナンスを行えばよいため、メンテナンスにかかる時間を短縮できる。 ○ Among the plurality of mounting portions 46 or the charging/discharging device 40, the mounting portion 46 or the charging/discharging device 40 used in each manufacturing process without necessarily using the different mounting portion 46 or the charging/discharging device 40 in each manufacturing process. The charging/discharging device 40 may be associated with each other. Such association is performed by using a storage unit separately from the charging/discharging device 40 when charging/discharging the secondary battery 10, for example. Specifically, every time the secondary battery 10 is mounted on the mounting part 46, the manufacturing process of the mounted secondary battery 10 is stored for each mounting part 46 or for each charging/discharging device 40. To be stored in the department. Then, by setting the position of the stopper plate portion 50c on the mounting table 45 in each of the mounting portions 46 or in each of the charging/discharging devices 40 to be a different position for each manufacturing process and a position determined for each manufacturing process. , The contact position of the probe 41 is made different for each manufacturing process. According to this modification, the productivity can be improved by fluidly assigning the plurality of mounting portions 46 or the charging/discharging device 40 to each manufacturing process. Further, even if damage to the electrode terminals 16 is found after charging/discharging the secondary battery 10 in the plurality of mounting portions 46 or the charging/discharging device 40, the manufacturing process in which the damage has occurred is specified from the damaged position. You can At the same time, the combination of the mounting portion 46 and the probe 41 or the charging/discharging device 40 that has been damaged can be determined from the mounting portion 46 or the charging/discharging device 40 stored in association with the manufacturing process. Therefore, since it is necessary to perform maintenance only on the combination of the relevant mounting portion 46 and the probe 41 in the charging/discharging device 40 or only the charging/discharging device 40 itself, it is possible to shorten the time required for the maintenance.
○ 載置台４５におけるストッパ板部５０ｃの位置を変更するためのストッパシリンダ５０ａ及びストッパロッド５０ｂを省略し、載置台４５毎で異なる位置となるようにストッパ板部５０ｃを載置台４５に固定して設けてもよい。 The stopper cylinder 50a and the stopper rod 50b for changing the position of the stopper plate portion 50c on the mounting table 45 are omitted, and the stopper plate portion 50c is fixed to the mounting table 45 so as to have different positions for each mounting table 45. It may be provided.
○ ストッパ板部５０ｃへの二次電池１０の当接に換えて、載置台４５に印をつけてその印に合わせて二次電池１０を載置させる等、他の手段によって載置台４５における決まった位置に二次電池１０を載置してもよい。 ○ In place of the contact of the secondary battery 10 to the stopper plate portion 50c, a mark is placed on the mounting table 45, and the secondary battery 10 is mounted according to the mark. The secondary battery 10 may be placed at a different position.
○ 複数の載置台４５におけるストッパ板部５０ｃの位置を同じ位置に設定する等により、複数の載置台４５で同じ位置に二次電池１０を載置させるとともに、厚み方向Ｙにおけるプローブ４１の位置をプローブ４１が対応する載置部４６毎で異なるようにしてもよい。また、二次電池１０の位置及びプローブ４１の位置の両方を載置部４６毎で異なるようにしてもよい。こうした各形態においても二次電池１０の充放電時のプローブ４１と二次電池１０との相対位置を製造工程毎で異ならせることにより、電極端子１６におけるプローブ４１の接触位置が製造工程毎に異なることになる。そのため、上記実施形態と同様の効果を得ることができる。 The secondary battery 10 is placed at the same position on the plurality of mounting bases 45 by setting the positions of the stopper plates 50c on the plurality of mounting bases 45 to the same position, and the position of the probe 41 in the thickness direction Y is set. The probe 41 may be different for each mounting portion 46 to which it corresponds. Further, both the position of the secondary battery 10 and the position of the probe 41 may be different for each mounting portion 46. Also in each of these modes, the relative position of the probe 41 and the secondary battery 10 during charging/discharging of the secondary battery 10 is made different in each manufacturing process, so that the contact position of the probe 41 at the electrode terminal 16 is made different in each manufacturing process. It will be. Therefore, the same effect as that of the above embodiment can be obtained.
○ 複数の製造工程にて共通の載置部４６に二次電池１０を載置させて二次電池１０の充放電を行うようにしてもよい。この形態においては、二次電池１０の製造工程毎で、載置台４５における二次電池１０の位置及びプローブ４１の位置の少なくとも一方を変更する。これにより、電極端子１６におけるプローブ４１の接触位置を製造工程毎で異ならせる。 The secondary battery 10 may be placed on the common placement portion 46 in a plurality of manufacturing steps to charge and discharge the secondary battery 10. In this embodiment, at least one of the position of the secondary battery 10 and the position of the probe 41 on the mounting table 45 is changed for each manufacturing process of the secondary battery 10. As a result, the contact position of the probe 41 on the electrode terminal 16 is made different in each manufacturing process.
○ 製造工程毎での端子接合部材１９へのプローブ４１の接触位置は上記実施形態の位置に限らない。例えば、載置台４５での二次電池１０の位置やプローブ４１の位置を製造工程毎に幅方向Ｘで異なる位置とすることにより、上記接触位置を製造工程毎に幅方向Ｘで異なる位置としてもよい。この形態では、充放電時における二次電池１０とプローブ４１との相対位置が製造工程毎で幅方向Ｘにて異なる位置となる。 The contact position of the probe 41 with the terminal joining member 19 in each manufacturing process is not limited to the position in the above embodiment. For example, by setting the position of the secondary battery 10 and the position of the probe 41 on the mounting table 45 to be different in the width direction X for each manufacturing process, the contact position may be different in the width direction X for each manufacturing process. Good. In this mode, the relative positions of the secondary battery 10 and the probe 41 during charging and discharging are different in the width direction X in each manufacturing process.
○ プローブ４１の接触位置は、端子接合部材１９に限らず、引出端子１８や外部接続端子２０等、電極端子１６のどこかであればよい。
○ 製造工程毎での電極端子１６への接触位置は、ほかの製造工程での接触位置と一部重なっていてもよい。
The contact position of the probe 41 is not limited to the terminal joining member 19, and may be any position on the electrode terminal 16 such as the lead terminal 18 and the external connection terminal 20.
The contact position with the electrode terminal 16 in each manufacturing process may partially overlap with the contact position in another manufacturing process.
○ 充放電時はプローブ４１の位置を高さ方向Ｚにて移動させることにより、プローブ４１と二次電池１０の電極端子１６とを接触させてもよい。
○ 載置部４６に対応する一対のプローブ４１の設置数は７対以下であってもよいし、９対以上であってもよい。
During charging and discharging, the position of the probe 41 may be moved in the height direction Z to bring the probe 41 into contact with the electrode terminal 16 of the secondary battery 10.
The number of the pair of probes 41 corresponding to the mounting portion 46 may be 7 pairs or less, or 9 pairs or more.
○ 初期充電工程及び特性評価工程以外の工程にて充放電装置４０を用いた二次電池１０の充放電を行うようにしてもよい。この形態においても、製造工程毎での電極端子１６におけるプローブ４１の接触位置を他の製造工程と異ならせれば、上記実施形態と同様の効果を得ることができる。 The charging/discharging of the secondary battery 10 using the charging/discharging device 40 may be performed in steps other than the initial charging step and the characteristic evaluation step. Also in this embodiment, if the contact position of the probe 41 on the electrode terminal 16 in each manufacturing step is different from that in the other manufacturing steps, the same effect as in the above embodiment can be obtained.
○ 充放電装置４０は二次電池１０の充電のみ又は放電のみを行うように変更してもよい。
○ 電極組立体１２は、正極電極、セパレータ、及び負極電極を積層して捲回した捲回型の電極組立体であってもよい。
The charging/discharging device 40 may be modified to perform only charging or discharging of the secondary battery 10.
The electrode assembly 12 may be a wound type electrode assembly in which a positive electrode, a separator, and a negative electrode are laminated and wound.
○ ケース１１の形状は、有底円筒状のケース本体１３とケース本体１３の開口部１３ａを閉塞する円板状の蓋１４とを備える円柱型等、角型以外の形状であってもよい。
○ 二次電池１０は、リチウムイオン二次電池であったが、これに限らず、他の二次電池であってもよい。要するに、正極活物質と負極活物質との間をイオンが移動するとともに電荷の授受を行うものであればよい。
The shape of the case 11 may be a shape other than a square shape, such as a cylindrical shape including a bottomed cylindrical case body 13 and a disc-shaped lid 14 that closes the opening 13a of the case body 13.
The secondary battery 10 is a lithium-ion secondary battery, but the secondary battery 10 is not limited to this and may be another secondary battery. In short, any material can be used as long as the ions move between the positive electrode active material and the negative electrode active material, and transfer and receive charges.
○ 電気二重層キャパシタ等の蓄電装置に具体化してもよい。 It may be embodied in a power storage device such as an electric double layer capacitor.
１０…二次電池、１６…電極端子、４０…充放電装置、４１…プローブ、４２…充放電機、４６…載置部。 10... Secondary battery, 16... Electrode terminal, 40... Charge/discharge device, 41... Probe, 42... Charge/discharge machine, 46... Placement part.
Claims (5)
前記蓄電装置の充放電時の前記プローブと前記電極端子との接触位置が、前記製造工程毎に決まっていて、且つ前記製造工程毎に異なることを特徴とする蓄電装置の充放電方法。 The power storage device, in which a probe of a charging/discharging device that charges or discharges the power storage device with the power storage device placed on the mounting portion is brought into contact with each of a positive electrode terminal and a negative electrode terminal of the power storage device A charging/discharging method of a power storage device, wherein the charging/discharging is performed in a plurality of manufacturing steps of the power storage device,
A charging/discharging method for a power storage device, wherein a contact position between the probe and the electrode terminal at the time of charging/discharging the power storage device is determined for each manufacturing process and different for each manufacturing process.
前記製造工程毎で異なる前記載置部に前記蓄電装置を載置して前記蓄電装置の充放電を行う請求項１に記載の蓄電装置の充放電方法。 A plurality of the above-mentioned mounting portions, the probe is provided corresponding to each of the mounting portion,
The charging/discharging method for a power storage device according to claim 1, wherein the power storage device is placed on a mounting portion that differs depending on the manufacturing process to charge/discharge the power storage device.
前記製造工程と、各製造工程で用いられた前記載置部とを関連付ける請求項１に記載の蓄電装置の充放電方法。 A plurality of the above-mentioned mounting portions, the probe is provided corresponding to each of the mounting portion,
The charging/discharging method for a power storage device according to claim 1, wherein the manufacturing process is associated with the placement unit used in each manufacturing process.
前記載置部を複数備え、前記プローブは前記載置部に対応してそれぞれ設けられ、
前記蓄電装置の充放電時の前記プローブと前記電極端子との接触位置が、前記載置部毎に決まっていて、且つ前記載置部毎に異なることを特徴とする蓄電装置の充放電方法。 The power storage device, in which a probe of a charging/discharging device that charges or discharges the power storage device with the power storage device placed on the mounting portion is brought into contact with each of a positive electrode terminal and a negative electrode terminal of the power storage device A charging/discharging method of a power storage device, wherein the charging/discharging is performed in the manufacturing process of the power storage device,
A plurality of the above-mentioned mounting portions, the probe is provided corresponding to each of the mounting portion,
A charging/discharging method for a power storage device, wherein a contact position between the probe and the electrode terminal at the time of charging/discharging the power storage device is fixed for each mounting part and different for each mounting part.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022065869A1 (en) * | 2020-09-24 | 2022-03-31 | 주식회사 엘지에너지솔루션 | Battery cell charging/discharging jig capable of connecting to multiple power sources, and battery cell charging/discharging system including same |
| EP4089783A1 (en) * | 2021-05-14 | 2022-11-16 | Robert Bosch GmbH | Discharging device with short-circuit element and discharging method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022065869A1 (en) * | 2020-09-24 | 2022-03-31 | 주식회사 엘지에너지솔루션 | Battery cell charging/discharging jig capable of connecting to multiple power sources, and battery cell charging/discharging system including same |
| EP4089783A1 (en) * | 2021-05-14 | 2022-11-16 | Robert Bosch GmbH | Discharging device with short-circuit element and discharging method |
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