JP2020004611A - Charge/discharge test device - Google Patents

Abstract

To provide a charge/discharge test device that performs a reliable and stable test with a simple structure by appropriately restricting the expansion of a secondary battery during charging to prevent a decrease in capacity and occurrence of variation, and to prevent a position change of a positive electrode terminal and a negative electrode terminal.SOLUTION: A charge/discharge test device includes a battery tray 16 that includes a base portion 20, an end frame member 21 provided at both ends in the longitudinal direction of the base portion 20, and a side frame member 22 provided on both sides in the width direction of the end frame member 21, and in which a separator 24 slidably held in the longitudinal direction of the base portion 20 and alternately arranged with a secondary battery 11 is provided, and a charging/discharging stage 17 that includes a tray mounting portion 40 on which the battery tray 16 is removably mounted, and pressing means 41 provided on the tray mounting portion 40 and pressing the separator 24 in the longitudinal direction of the battery tray 16.SELECTED DRAWING: Figure 1

Description

The present invention relates to a charge / discharge test apparatus capable of reliably performing electrical connection by limiting a change in shape of each secondary battery when charging / discharging a plurality of secondary batteries at once.

In recent years, with the development of IT devices such as smartphones and the practical use of electric vehicles and the like, demand for secondary batteries such as lithium ion batteries and nickel hydrogen batteries has been rapidly increasing. In the final step of the mass production process of the secondary battery, activation and quality inspection of the produced secondary battery are performed, and by a charge / discharge test, whether or not predetermined performance and characteristics are satisfied is inspected. Ships from. Generally, this inspection is performed by arranging a plurality of secondary batteries at one time. For example, in Patent Literature 1, a plurality of secondary batteries are arranged side by side so as to overlap in the width direction, and a charging / discharging device that performs charging / discharging by inserting a power supply side terminal into a positive terminal and a negative terminal of the secondary battery is used. Equipped with a plurality of charge / discharge units having a power supply side terminal for each rechargeable battery in one or more sets of rechargeable batteries, and the charge / discharge unit can slide in the direction in which the rechargeable batteries are arranged. Attached ones have been proposed. Further, Patent Document 2 discloses a charge / discharge including a power supply, a battery inspection unit accommodating a plurality of secondary batteries, and a plurality of contacts provided in the battery inspection unit for supplying power to each secondary battery from the power supply. An inspection device is described.

JP 2010-140844 A International Publication No. WO 2012/093652

However, Patent Literature 1 discloses that by inserting the power supply terminal into the positive electrode terminal and the negative electrode terminal of the secondary battery, the amount of displacement between the positive electrode and the negative electrode terminal and the power supply terminal with respect to displacement due to expansion of the secondary battery is suppressed. Thus, the connection between the positive and negative terminals and the power supply terminal is maintained. For this reason, the shapes of the positive electrode and the negative electrode terminal are limited to those into which the power supply side terminal can be inserted, and there is a problem that versatility is lacking. Further, in Patent Literature 1, the power supply side terminal is pulled along with the displacement of the positive electrode and the negative electrode terminal due to the expansion of the secondary battery, so that the charge / discharge unit slides in the direction in which the secondary batteries are arranged. Therefore, even if the amount of displacement between the positive and negative terminals and the power supply terminal is small, a load is easily applied to the power supply terminal, and the charge and discharge are repeated. There is a problem in that it may occur and lacks durability. Further, in Patent Document 1, a plurality of secondary batteries are sandwiched one by one with a spacer (separator) in the width direction, and a scanning tooth formed on a charge / discharge unit is inserted between the spacers to perform positioning, and a power supply side terminal is provided. Is inserted into the positive and negative terminals. This means that one set of one or more secondary batteries is used as a set, and a profile tooth is arranged at the center of the set of secondary batteries, so that the moving distance of another secondary battery with respect to the center secondary battery is positive. And the amount of deviation between the negative terminal and the power supply side terminal. In other words, since there is a scanning tooth serving as a reference for the shift amount for each set of secondary batteries, even when a plurality of sets of secondary batteries are arranged and arranged, the shift amounts are not accumulated (accumulated). It is possible to reduce the amount. However, even the slight misalignment that occurs in each group may cause the power supply side terminal to bend, and may cause deformation or damage due to repeated use. In addition, the number of parts increases to form the scanning tooth, and the configuration becomes complicated.In addition, the tip of the scanning tooth is formed with a slope, and the taper is formed at the top of the spacer so that the scanning tooth smoothly enters between the spacers. It is necessary to devise the shape by forming a surface, and there is a problem that it takes time and effort to process and lacks mass productivity. Further, in Patent Literature 1, in a battery pallet (tray) in which secondary batteries are superposed and arranged in the width direction, spacers arranged between adjacent secondary batteries are arranged in accordance with expansion during charging of the secondary batteries. Can be moved in the longitudinal direction of the battery pallet. The battery pallet is provided with a restraining jig for applying a constant load to the plurality of rechargeable batteries and the spacer during charging to suppress the expansion of the rechargeable battery. The battery pallet is required to have high rigidity so that the battery pallet is not deformed by the applied load. Therefore, each part of the restraining jig must be formed of a metal such as stainless steel, and there is a problem that the weight increases and the handling (transportability) is lacking. In particular, in the mass production process, a large number of battery pallets are required to inspect a large number of secondary batteries, which leads to an increase in cost.

On the other hand, in Patent Document 2, a plurality of secondary batteries are arranged at intervals, each secondary battery can expand and contract without being restrained during charging and discharging, and adjacent secondary batteries can be There is no interference. In other words, the positions of the positive electrode and the negative electrode terminal of the secondary battery do not move due to expansion and contraction, and no positional displacement occurs between the secondary battery and the power supply side terminal. Therefore, there is no need for a mechanism for moving the power supply side terminal corresponding to (following) the movement of the positive electrode and the negative electrode terminal accompanying the expansion and contraction of the secondary battery as in Patent Literature 1. The structure can be simplified. However, since the capacity of the secondary battery decreases with expansion, if no restriction is imposed and free expansion is allowed, the required capacity may not be maintained. There is a problem that stability is also reduced.
The present invention has been made in view of such circumstances, and has a simple structure that appropriately limits expansion during charging of a secondary battery to prevent a reduction in capacity and the occurrence of variations, and suppresses positional fluctuation of a positive electrode terminal and a negative electrode terminal. It is an object of the present invention to provide a charge / discharge test apparatus which is capable of performing a test reliably, stably and stably, and which is excellent in mass productivity and low cost.

A charging / discharging test apparatus according to the present invention, which meets the above object, has a plurality of rechargeable batteries arranged in a thickness direction, and a power supply terminal is electrically connected to a positive terminal and a negative terminal of each of the rechargeable batteries. The charge and discharge test device that performs
A base portion, end frame members provided at both ends in the longitudinal direction of the base portion, and side frame members provided on both widthwise sides of the end frame member along the longitudinal direction of the base portion; A, a battery tray provided with separators that are slidably held in the longitudinal direction of the base portion and that are alternately arranged with the secondary batteries,
A tray mounting portion on which the battery tray is removably mounted; and pressing means provided on the tray mounting portion and pressing the separator held by the battery tray in a longitudinal direction of the battery tray. A charge / discharge stage.

In the charging / discharging test apparatus according to the present invention, the battery tray has a pressing opening formed in one of the end frame members, and the pressing unit is configured to move the pressing tray from the pressing opening to the inside of the battery tray. It is preferable to have a pressing portion inserted into the end portion, and a contact portion disposed to face the pressing portion and abutting against the outer surface of the other end frame member.

In the charging / discharging test apparatus according to the present invention, the battery tray has a pressing opening formed in each of the end frame members, and the pressing unit is configured to move the pressing unit from the inside of the battery tray through the pressing opening. It is preferable to have a pair of pressing parts inserted into the device.

In the charge / discharge test apparatus according to the present invention, the separator includes a partition portion arranged along a width direction of the secondary battery, and an inner surface of each of the side frame members on both sides of the partition portion. It is preferable to have a guide portion provided.

In the charge / discharge test device according to the present invention, it is preferable that the partition portion is formed of an elastic body or provided with an elastic deformation portion at least on a surface facing the secondary battery.

In the charging / discharging test apparatus according to the present invention, the partition portion includes a movable plate provided on a surface facing the secondary battery, and an elastic support for slidably supporting the movable plate in a longitudinal direction of the battery tray. It is preferable to have a part.

In the charge / discharge test apparatus according to the present invention, since the pressing means for pressing the separator held by the battery tray in the longitudinal direction of the battery tray is provided on the tray mounting portion of the charge / discharge stage, the charging / discharging of the secondary battery is performed. During the discharge test, the separator can be pressed with an appropriate pressure by the pressing means to limit the amount of expansion of the secondary battery (suppress within a certain range), thereby preventing a reduction in capacity and occurrence of variation. Excellent in quality control reliability. At this time, the plurality of secondary batteries can be held at a predetermined pitch (constant interval) by the separator and the pressing means, and the positions of the positive electrode terminal and the negative electrode terminal change even if the secondary battery repeatedly expands and contracts. This eliminates the need for a mechanism for adjusting the position of the power-supply-side terminal by following the change in the position of the positive terminal and the negative terminal as in the related art, thereby simplifying the configuration of the apparatus. Further, the separator held by the battery tray and alternately arranged with the secondary batteries is pressed in the longitudinal direction of the battery tray (the stacking direction of the secondary batteries and the separator) by pressing means provided on the tray mounting portion of the charge / discharge stage. By pressing the battery tray, no load is applied to the battery tray.Thus, it is possible to reduce the thickness of each part of the battery tray, and to reduce the weight and cost by changing the material to light metal or synthetic resin. it can. Further, since the pressing means is provided on the tray mounting portion of the charging / discharging stage, it is not necessary to provide the pressing means on each battery tray, so that the battery tray is excellent in handleability and transportability, and a large number of battery trays can be used. Even if it is prepared, it does not lead to an increase in cost, and a large amount of secondary batteries can be tested efficiently.

The battery tray has a pressing opening formed in one end frame member, and the pressing means is configured such that the pressing unit is inserted into the battery tray from the pressing opening into the inside of the battery tray. In the case of having an abutting portion that abuts on the outer surface of the end frame member, only the battery tray in which the separator and the secondary battery are stored is simply placed on the tray mounting portion, and the pressing portion and the abutting portion are placed between the pressing portion and the abutting portion. The separator can be easily and reliably pressed at a predetermined pressure, and the amount of expansion of the secondary battery at the time of charging can be limited to prevent the positive terminal and the negative terminal from changing in position. Further, since the force of the pressing portion can be received by the contact portion, a load is not directly applied to the end frame member and the side frame member, and the deformation and breakage of the battery tray is prevented, and the thickness of the battery tray is reduced. Weight and weight can be reduced.

When the battery tray has a pressing opening formed in each end frame member, and the pressing means has a pair of pressing portions inserted into the battery tray from each pressing opening, the separator and By simply placing the battery tray containing the secondary battery on the tray mounting portion, the separator can be easily and reliably pressed at a predetermined pressure between the pair of pressing portions. Of the positive electrode terminal and the negative electrode terminal can be prevented from varying. Further, since the separator is pressed between the pair of pressing portions, a load is not directly applied to the end frame member and the side frame member, and the deformation and breakage of the battery tray is prevented, and the thickness of the battery tray is reduced. The weight can be reduced.

When the separator has a partition portion arranged along the width direction of the secondary battery and guide portions provided along the inner surface of each side frame member on both sides of the partition portion, the guide portion separates the separator. Smoothly slides, a plurality of secondary batteries can be held at equal intervals by the separator, and even if the secondary battery repeatedly expands and contracts by the charge / discharge test, the positions of the positive terminal and the negative terminal fluctuate. Therefore, the electrical connection between the positive terminal and the negative terminal and the power supply terminal can be reliably maintained, and the stability of the charge / discharge test is excellent.

When the partitioning portion is formed of an elastic body or has at least an elastic deformation portion provided on a surface facing the secondary battery, dimensional tolerance (variation) and regulation of the secondary battery due to deformation of the elastic body or the elastic deformation portion. By absorbing the expansion of the secondary battery or more, it is possible to prevent a reduction in the capacity of the secondary battery and the occurrence of variation, thereby stabilizing the quality of the secondary battery.

When the partitioning portion has a movable plate provided on a surface facing the secondary battery and an elastic supporting portion that slidably supports the movable plate in the longitudinal direction of the battery tray, deformation (compression) of the elastic supporting portion. By moving the movable plate, the dimensional tolerance (variation) of the secondary battery and the expansion exceeding a specified amount are absorbed, preventing a decrease in the capacity of the secondary battery and the occurrence of variation, and stabilizing the quality of the secondary battery. Can be changed.

It is a top view showing the state at the time of starting use of the charge and discharge test device concerning a 1st embodiment of the present invention. FIG. 2 is a sectional view taken along line AA of FIG. 1. (A) is principal part sectional drawing which shows the internal structure of the partition part in the separator used by the same charge / discharge test apparatus, (B)-(E) is the internal structure of the partition part in the separator used by the same charge / discharge test apparatus, respectively. It is principal part sectional drawing which shows the modification of. It is a top view showing the state at the time of starting use of the charge and discharge test device concerning a 2nd embodiment of the present invention. FIG. 5 is a sectional view taken along line BB of FIG. 4.

Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.
The charge / discharge test apparatus 10 according to the first embodiment of the present invention shown in FIGS. 1 and 2 performs activation and quality inspection of a laminated or square secondary battery 11 such as a produced lithium ion battery. A plurality of secondary batteries 11 are arranged side by side in the thickness direction, and a power supply side terminal (not shown) is electrically connected to a positive terminal 12 and a negative terminal 13 of each secondary battery 11 to charge and discharge at one time. It is for.
The charge / discharge test apparatus 10 includes a battery tray 16 on which a plurality of secondary batteries 11 are arranged in the thickness direction, and a charge / discharge stage 17 on which the battery tray 16 is detachably mounted to perform a charge / discharge test. ing.

Hereinafter, the details of the charge / discharge test apparatus 10 will be described. 1 and 2 is the front-rear direction (longitudinal direction) of the charge / discharge test apparatus 10 and the battery tray 16, and the vertical direction of FIG. 1 is the left-right direction (width direction) of the charge / discharge test apparatus 10 and the battery tray 16. ).
First, as shown in FIGS. 1 and 2, the battery tray 16 includes a base portion 20, end frame members 21 provided at both ends in the longitudinal direction of the base portion 20, and a longitudinal direction of the base portion 20. Side frame members 22 provided on both widthwise side portions of the end frame member 21. The battery tray 16 is provided with separators 24 that are slidably held in the longitudinal direction of the base portion 20 and that are alternately arranged with the secondary batteries 11. The side frame member 22 may connect the end frame members 21 at both ends and may restrict the widthwise position of the secondary battery 11 and the separator 24. Therefore, in the present embodiment, the side frame member 22 is provided at a part (central portion) in the height direction of the end frame member 21, but the side frame member is provided over the entire height of the end frame member 21. It may be provided, or a plurality of side frame members may be provided separately in the height direction of the end frame member 21. The material of the base portion 20, the end frame member 21, and the side frame member 22 is preferably a metal such as stainless steel, but may be a synthetic resin.

As shown in FIGS. 1 and 2, the separator 24 includes a partition portion 25 arranged along the width direction of the secondary battery 11, and an inner surface of each side frame member 22 on both sides of the partition portion 25. And a guide portion 26 that is provided. Since the separator 24 configured as described above is slidable in the longitudinal direction of the base portion 20, as shown in FIG. 1 and FIG. The battery 11 can be easily taken in and out. In FIG. 1, there is a gap between the inner surface of each side frame member 22 and the guide section 26, but this gap is caused by the inclination of the secondary battery 11 and the separator 24 or a large displacement in the width direction. It is formed to such an extent that it can be smoothly moved along the longitudinal direction of the base portion 20 without doing so. If necessary, guide protrusions or guide grooves are provided on both outer portions of the guide portion 26, and guide grooves or guides engaging with the guide protrusions or guide grooves of the guide portion 26 are provided on the inner surface of each side frame member 22. Protrusions may be provided to guide the sliding of the separator 24.

The guide part 26 may be made of metal or synthetic resin. Further, the partition 25 is formed of an elastic body. As the material, for example, silicon rubber is preferably used, but other synthetic rubbers may be used, and the thickness, hardness, elastic modulus, and the like are appropriately selected. Can be. At this time, as shown in FIG. 3A, it is preferable to form hollow portions 27 and 28 as necessary so that the partition portion 25 is easily deformed (compressed) in the thickness direction. The structure of the partition is not limited to this. For example, as shown in FIG. 3B, a partition 30 having a rectangular hollow portion 29 formed therein, or as shown in FIG. Alternatively, a partition portion 32 in which triangular hollow portions 31 are alternately formed can be used, and the cross-sectional shape, number, and arrangement of the hollow portions can be appropriately selected. In addition, as shown in FIG. 3 (D), when a partition portion 34 made of a foamed resin or a porous material (a kind of elastic body) having a large number of pores (bubbles) 33 therein is used, a hollow portion is formed. It may not be formed, or may be formed.
Further, instead of forming the entire partition portion of the spacer with an elastic body, an elastically deforming portion is formed on a surface (one or both surfaces of the base portion) of the base portion formed of metal, synthetic resin, or the like, which faces the secondary battery 11. May be provided. In addition, as the material of the elastic deformation portion, the same material as the above-mentioned elastic body is suitably used. Since the base member has a predetermined rigidity, the base member serves as a core material and can prevent deformation and breakage of the entire separator (partition).
Further, as shown in FIG. 3E, a movable plate 35 provided on the surface facing the secondary battery 11 and an elastic support portion 37 for supporting the movable plate 35 slidably in the longitudinal direction of the battery tray 16. The partition 38 may have the following. In this case, the elastic support portion 37 can be compressed via the movable plate 35 when each of the secondary batteries 11 expands, and the expansion of each of the secondary batteries 11 can be performed by moving only the movable plate 35 without moving the separator. Can be absorbed. Although the elastic supporting portion 37 is directly sandwiched between the two movable plates 35 here, a base portion (core material) made of metal, synthetic resin, or the like is provided, and the base portion (core material) is opposed to the secondary battery 11. The movable plate may be attached to the surfaces to be formed (both surfaces of the base member) via the elastic supporting portions. Further, instead of using a spring as the elastic support portion 37, silicon rubber, foamed resin, or the like similar to the above-described elastic body may be used.

Next, the charging / discharging stage 17 is provided with a tray mounting portion 40 on which the battery tray 16 is detachably mounted, and a separator 24 provided on the tray mounting portion 40 and holding the battery tray 16 with the separator 24. Pressing means 41 for pressing in the longitudinal direction. Here, the battery tray 16 has a pressing opening 42 formed in one (right side in FIGS. 1 and 2) end frame member 21. The pressing means 41 contacts a pressing portion 43 inserted into the battery tray 16 from the pressing opening portion 42 and presses the separator 24, and an outer surface of the other end frame member 21 disposed opposite to the pressing portion 43. It has a contact portion 44 that comes into contact with it. The pressing means 41 has a pressing drive unit 45 such as a hydraulic cylinder that slides the pressing unit 43 in the longitudinal direction of the battery tray 16. Then, the separators 24 and the secondary batteries 11 are alternately arranged on the battery tray 16, but the end portion between the end frame member 21 on the front end side of the apparatus (the left end in FIGS. 1 and 2) and the separator 24 has an end portion. A support member 46 is disposed, and an end pressing member 47 is disposed between the pressing portion 43 and the secondary battery 11 on the rear end side (right end in FIGS. 1 and 2).

The end support member 46 is formed in a plate shape from metal, synthetic resin, or the like. When the separator 24 of the battery tray 16 is pressed by the pressing means 41, the end support member 46 comes into contact with and supports the partition portion 25 of the front end separator 24. . If the end frame member 21 of the battery tray 16 has sufficient rigidity, the end support member 46 can be omitted. The end pressing member 47 is formed by forming a base 48 with which the pressing portion 43 of the pressing means 41 contacts with a rigid body such as a metal or a synthetic resin, and attaching an elastic portion 49 to a surface which contacts with the secondary battery 11. is there. Accordingly, when the separator 24 of the battery tray 16 is pressed by the pressing means 41, the force of the pressing portion 43 can be reliably transmitted through the end pressing member 47 and comes into contact with the end pressing member 47. The elastic part 49 can absorb variations in the size of the secondary battery 11 and expansion exceeding a specified amount during charging. At this time, the elastic portion 49 preferably has the same elasticity as the partition portion 25 of the separator 24, and the same material as the partition portion 25 is suitably used.

Here, the base side of the pressing drive unit 45 is fixed to a fixing unit 50 erected on the tray mounting unit 40, and the contact unit 44 and the bottom of the fixing unit 50 are connected by the tray mounting unit 40. The widthwise both sides of the contact portion 44 and the fixed portion 50 are connected by two upper and lower side connection portions 51 as shown in FIG. With these configurations, the contact portion 44 and the fixed portion 50 can be prevented from being deformed or tilted, and the distance therebetween can be kept constant, and the pressing means 41 can reliably press the separator 24 provided on the battery tray 16. Thus, a charge / discharge test can be performed with the secondary batteries 11 held at a predetermined pitch (at a constant interval). In the present embodiment, the contact portion 44 and the fixing portion 50 are connected at both sides in the width direction by the upper and lower two side connecting portions 51, but the side connecting portion connects the contact portion 44 and the fixing portion 50. The shape (thickness and height dimension), the number, and the arrangement can be appropriately selected as long as they can prevent deformation and inclination. Therefore, the side connecting portion may be provided in the entire height direction of the contact portion 44 and the fixing portion 50, or the side connecting portion may be omitted if the contact portion 44 and the fixing portion 50 have sufficient strength. Is also good.

When the pressing drive unit 45 is driven to extend the pressing unit 43 from the state at the start of use shown in FIGS. 1 and 2, each of the rechargeable batteries 11, each of the separators 24 and the end is pressed by the end pressing material 47. The part support member 46 moves to the contact part 44 side. Then, the end support member 46 comes into contact with the end frame member 21, and the pressing portion 43 stops in a state where the separators 24, the end support member 46, and the end pressing member 47 are in close contact with each other. Then, when the guide portions 26 of the adjacent separators 24 come into contact with each other, each of the secondary batteries 11 and each of the separators 24 are held at regular intervals. At this time, the partition 25 adjacent to the secondary battery 11 may be in close contact, or a gap (for example, 0.5 to 1 mm) may be formed. In any case, since the separators 24 alternately arranged with the secondary batteries 11 are pressed by the pressing means 41 and held at equal intervals, expansion and contraction of each of the secondary batteries 11 due to charging and discharging occurs. Even though, each secondary battery 11 and each separator 24 are absorbed by the elastic deformation of each partition portion 25 and elastic portion 49, and do not move in the front-rear direction of the device (the left-right direction in FIGS. 1 and 2). That is, even if each of the secondary batteries 11 repeatedly expands and contracts, the positions of the positive terminal 12 and the negative terminal 13 do not change. A mechanism for adjusting the position of the power supply side terminal is not required, and the configuration of the device can be simplified. In addition, the expansion of each secondary battery 11 by a specified amount or more is restricted by each partition portion 25 and the elastic portion 49, so that the capacity of each secondary battery 11 and the occurrence of variation are suppressed. In the present embodiment, the partition 25 of each separator 24 is arranged on the front side of each secondary battery 11, but each separator 24 is arranged such that the partition 25 of each separator 24 is arranged on the rear side of each secondary battery 11. The direction of 24 may be reversed, and the end support 46 and the end pressing member 47 may be exchanged.

Next, a charge / discharge test apparatus 55 according to a second embodiment of the present invention will be described. In addition, about the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.
The charge / discharge test device 55 differs from the charge / discharge test device 10 in that, as shown in FIGS. 4 and 5, each of the end frame members 21 of the battery tray 56 has a pressing opening 42 formed therein. The pressing means 58 of the stage 57 has a pair of pressing portions 43 that are inserted into the battery tray 56 from the respective pressing openings 42.
According to the charge / discharge test apparatus 55, the same operation and effect as those of the charge / discharge test apparatus 10 can be obtained. In the charge / discharge test device 55, the reaction force is canceled by simultaneously applying pressure from both front and rear directions (both right and left directions in FIGS. 4 and 5) by the pair of pressing portions 43, so that a load is applied to the battery tray 56. Absent. Therefore, the battery tray 56 can be made of a synthetic resin to reduce cost and weight, thereby improving maintainability.

As described above, the embodiments of the present invention have been described. However, the present invention is not limited to the configurations described in the above embodiments, and can be considered within the scope of the matters described in the claims. Other embodiments and modifications are also included.
For example, in the above-described embodiment, the separator is formed in a U-shape in plan view, but the separator may have guide portions on both sides in the width direction of the partition portion, and may be formed in an I-shape in plan view. May be.

10: Charge / discharge test apparatus, 11: secondary battery, 12: positive terminal, 13: negative terminal, 16: battery tray, 17: charge / discharge stage, 20: base, 21: end frame member, 22: side Frame member, 24: separator, 25: partition, 26: guide, 27, 28, 29: hollow, 30: partition, 31: hollow, 32: partition, 33: pore (bubble), 34: Partitioning part, 35: movable plate, 37: elastic supporting part, 38: partitioning part, 40: tray mounting part, 41: pressing means, 42: pressing opening, 43: pressing part, 44: contact part, 45 : Press drive unit, 46: end support, 47: end press, 48: base, 49: elastic, 50: fixed, 51: side connection, 55: charge / discharge tester, 56: battery Tray, 57: charge / discharge stage, 58: pressing means

The present invention relates to a charge / discharge test apparatus capable of reliably performing electrical connection by limiting a change in shape of each secondary battery when charging / discharging a plurality of secondary batteries at once.

In recent years, with the development of IT devices such as smartphones and the practical use of electric vehicles and the like, demand for secondary batteries such as lithium ion batteries and nickel hydrogen batteries has been rapidly increasing. In the final step of the mass production process of the secondary battery, activation and quality inspection of the produced secondary battery are performed, and by a charge / discharge test, whether or not predetermined performance and characteristics are satisfied is inspected. Ships from. Generally, this inspection is performed by arranging a plurality of secondary batteries at one time. For example, in Patent Literature 1, a plurality of secondary batteries are arranged side by side so as to overlap in the width direction, and a charging / discharging device that performs charging / discharging by inserting a power supply side terminal into a positive terminal and a negative terminal of the secondary battery is used. Equipped with a plurality of charge / discharge units having a power supply side terminal for each rechargeable battery in one or more sets of rechargeable batteries, and the charge / discharge unit can slide in the direction in which the rechargeable batteries are arranged. Attached ones have been proposed. Further, Patent Document 2 discloses a charge / discharge including a power supply, a battery inspection unit accommodating a plurality of secondary batteries, and a plurality of contacts provided in the battery inspection unit for supplying power to each secondary battery from the power supply. An inspection device is described.

JP 2010-140844 A International Publication No. WO 2012/093652

However, Patent Literature 1 discloses that by inserting the power supply terminal into the positive electrode terminal and the negative electrode terminal of the secondary battery, the amount of displacement between the positive electrode and the negative electrode terminal and the power supply terminal with respect to displacement due to expansion of the secondary battery is suppressed. Thus, the connection between the positive and negative terminals and the power supply terminal is maintained. For this reason, the shapes of the positive electrode and the negative electrode terminal are limited to those into which the power supply side terminal can be inserted, and there is a problem that versatility is lacking. Further, in Patent Literature 1, the power supply side terminal is pulled along with the displacement of the positive electrode and the negative electrode terminal due to the expansion of the secondary battery, so that the charge / discharge unit slides in the direction in which the secondary batteries are arranged. Therefore, even if the amount of displacement between the positive and negative terminals and the power supply terminal is small, a load is easily applied to the power supply terminal, and the charge and discharge are repeated. There is a problem in that it may occur and lacks durability. Further, in Patent Document 1, a plurality of secondary batteries are sandwiched one by one with a spacer (separator) in the width direction, and a scanning tooth formed on a charge / discharge unit is inserted between the spacers to perform positioning, and a power supply side terminal is provided. Is inserted into the positive and negative terminals. This means that one set of one or more secondary batteries is used as a set, and a profile tooth is arranged at the center of the set of secondary batteries, so that the moving distance of another secondary battery with respect to the center secondary battery is positive. And the amount of deviation between the negative terminal and the power supply side terminal. In other words, since there is a scanning tooth serving as a reference for the shift amount for each set of secondary batteries, even when a plurality of sets of secondary batteries are arranged and arranged, the shift amounts are not accumulated (accumulated). It is possible to reduce the amount. However, even the slight misalignment that occurs in each group may cause the power supply side terminal to bend, and may cause deformation or damage due to repeated use. In addition, the number of parts increases to form the scanning tooth, and the configuration becomes complicated.In addition, the tip of the scanning tooth is formed with a slope, and the taper is formed at the top of the spacer so that the scanning tooth smoothly enters between the spacers. It is necessary to devise the shape by forming a surface, and there is a problem that it takes time and effort to process and lacks mass productivity. Further, in Patent Literature 1, in a battery pallet (tray) in which secondary batteries are superposed and arranged in the width direction, spacers arranged between adjacent secondary batteries are arranged in accordance with expansion during charging of the secondary batteries. Can be moved in the longitudinal direction of the battery pallet. The battery pallet is provided with a restraining jig for applying a constant load to the plurality of rechargeable batteries and the spacer during charging to suppress the expansion of the rechargeable battery. The battery pallet is required to have high rigidity so that the battery pallet is not deformed by the applied load. Therefore, each part of the restraining jig must be formed of a metal such as stainless steel, and there is a problem that the weight increases and the handling (transportability) is lacking. In particular, in the mass production process, a large number of battery pallets are required to inspect a large number of secondary batteries, which leads to an increase in cost.

On the other hand, in Patent Document 2, a plurality of secondary batteries are arranged at intervals, each secondary battery can expand and contract without being restrained during charging and discharging, and adjacent secondary batteries can be There is no interference. In other words, the positions of the positive electrode and the negative electrode terminal of the secondary battery do not move due to expansion and contraction, and no positional displacement occurs between the secondary battery and the power supply side terminal. Therefore, there is no need for a mechanism for moving the power supply side terminal corresponding to (following) the movement of the positive electrode and the negative electrode terminal accompanying the expansion and contraction of the secondary battery as in Patent Literature 1. The structure can be simplified. However, since the capacity of the secondary battery decreases with expansion, if no restriction is imposed and free expansion is allowed, the required capacity may not be maintained. There is a problem that stability is also reduced.
The present invention has been made in view of such circumstances, and has a simple structure that appropriately limits expansion during charging of a secondary battery to prevent a reduction in capacity and the occurrence of variations, and suppresses positional fluctuation of a positive electrode terminal and a negative electrode terminal. It is an object of the present invention to provide a charge / discharge test apparatus which is capable of performing a test reliably, stably and stably, and which is excellent in mass productivity and low cost.

A charging / discharging test apparatus according to the present invention, which meets the above object, has a plurality of rechargeable batteries arranged in a thickness direction, and a power supply terminal is electrically connected to a positive terminal and a negative terminal of each of the rechargeable batteries. The charge and discharge test device that performs
A base portion, end frame members provided at both ends in the longitudinal direction of the base portion, and side frame members provided on both widthwise sides of the end frame member along the longitudinal direction of the base portion; A, a battery tray provided with separators that are slidably held in the longitudinal direction of the base portion and that are alternately arranged with the secondary batteries,
A tray mounting portion on which the battery tray is removably mounted; and pressing means provided on the tray mounting portion and pressing the separator held by the battery tray in a longitudinal direction of the battery tray. Charge and discharge stage ,
The separator has a partition portion arranged along the width direction of the secondary battery, and a guide portion provided on both sides of the partition portion along the inner surface of each side frame member, By being pressed by the pressing means, the guide portions of the adjacent separators are in contact with each other, and each of the secondary batteries and each of the separators are held at regular intervals, and each of the secondary batteries is charged and discharged. the expansion and contraction is absorbed by elastic deformation of the respective partition part, that limits the specified amount or more of expansion of the respective secondary batteries.

In the charging / discharging test apparatus according to the present invention, the battery tray has a pressing opening formed in one of the end frame members, and the pressing unit is configured to move the pressing tray from the pressing opening to the inside of the battery tray. It is preferable to have a pressing portion inserted into the end portion, and a contact portion disposed to face the pressing portion and abutting against the outer surface of the other end frame member.

In the charging / discharging test apparatus according to the present invention, the battery tray has a pressing opening formed in each of the end frame members, and the pressing unit is configured to move the pressing unit from the inside of the battery tray through the pressing opening. It is preferable to have a pair of pressing parts inserted into the device.

In the charge / discharge test device according to the present invention, it is preferable that the partition portion is formed of an elastic body or provided with an elastic deformation portion at least on a surface facing the secondary battery.

In the charging / discharging test apparatus according to the present invention, the partition portion includes a movable plate provided on a surface facing the secondary battery, and an elastic support for slidably supporting the movable plate in a longitudinal direction of the battery tray. It is preferable to have a part.

In the charge / discharge test apparatus according to the present invention, since the pressing means for pressing the separator held by the battery tray in the longitudinal direction of the battery tray is provided on the tray mounting portion of the charge / discharge stage, the charging / discharging of the secondary battery is performed. During the discharge test, the separator can be pressed with an appropriate pressure by the pressing means to limit the amount of expansion of the secondary battery (suppress within a certain range), thereby preventing a reduction in capacity and occurrence of variation. Excellent in quality control reliability. At this time, the plurality of secondary batteries can be held at a predetermined pitch (constant interval) by the separator and the pressing means, and the positions of the positive electrode terminal and the negative electrode terminal change even if the secondary battery repeatedly expands and contracts. This eliminates the need for a mechanism for adjusting the position of the power-supply-side terminal by following the change in the position of the positive terminal and the negative terminal as in the related art, thereby simplifying the configuration of the apparatus. Further, the separator held by the battery tray and alternately arranged with the secondary batteries is pressed in the longitudinal direction of the battery tray (the stacking direction of the secondary batteries and the separator) by pressing means provided on the tray mounting portion of the charge / discharge stage. By pressing the battery tray, no load is applied to the battery tray.Thus, it is possible to reduce the thickness of each part of the battery tray, and to reduce the weight and cost by changing the material to light metal or synthetic resin. it can. Further, since the pressing means is provided on the tray mounting portion of the charging / discharging stage, it is not necessary to provide the pressing means on each battery tray, so that the battery tray is excellent in handleability and transportability, and a large number of battery trays can be used. Even if it is prepared, it does not lead to an increase in cost, and a large amount of secondary batteries can be tested efficiently.

The battery tray has a pressing opening formed in one end frame member, and the pressing means is configured such that the pressing unit is inserted into the battery tray from the pressing opening into the inside of the battery tray. In the case of having an abutting portion that abuts on the outer surface of the end frame member, only the battery tray in which the separator and the secondary battery are stored is simply placed on the tray mounting portion, and the pressing portion and the abutting portion are placed between the pressing portion and the abutting portion. The separator can be easily and reliably pressed at a predetermined pressure, and the amount of expansion of the secondary battery at the time of charging can be limited to prevent the positive terminal and the negative terminal from changing in position. Further, since the force of the pressing portion can be received by the contact portion, a load is not directly applied to the end frame member and the side frame member, and the deformation and breakage of the battery tray is prevented, and the thickness of the battery tray is reduced. Weight and weight can be reduced.

When the battery tray has a pressing opening formed in each end frame member, and the pressing means has a pair of pressing portions inserted into the battery tray from each pressing opening, the separator and By simply placing the battery tray containing the secondary battery on the tray mounting portion, the separator can be easily and reliably pressed at a predetermined pressure between the pair of pressing portions. Of the positive electrode terminal and the negative electrode terminal can be prevented from varying. Further, since the separator is pressed between the pair of pressing portions, a load is not directly applied to the end frame member and the side frame member, and the deformation and breakage of the battery tray is prevented, and the thickness of the battery tray is reduced. The weight can be reduced.

Moreover, since the separator has a partition portion arranged along the width direction of the secondary battery, and a guide portion provided along the inner surfaces of the side frame members on both sides of the partition portion, the guide portion The separator can be slid smoothly, and the separator can hold a plurality of secondary batteries at equal intervals.Even if the secondary battery repeatedly expands and contracts by the charge / discharge test, the positions of the positive terminal and the negative terminal remain There is no change, the electrical connection between the positive terminal and the negative terminal and the power supply terminal can be reliably maintained, and the stability of the charge / discharge test is excellent.

When the partitioning portion is formed of an elastic body or has at least an elastic deformation portion provided on a surface facing the secondary battery, dimensional tolerance (variation) and regulation of the secondary battery due to deformation of the elastic body or the elastic deformation portion. By absorbing the expansion of the secondary battery or more, it is possible to prevent a reduction in the capacity of the secondary battery and the occurrence of variation, thereby stabilizing the quality of the secondary battery.

When the partitioning portion has a movable plate provided on a surface facing the secondary battery and an elastic supporting portion that slidably supports the movable plate in the longitudinal direction of the battery tray, deformation (compression) of the elastic supporting portion. By moving the movable plate, the dimensional tolerance (variation) of the secondary battery and the expansion exceeding a specified amount are absorbed, preventing a decrease in the capacity of the secondary battery and the occurrence of variation, and stabilizing the quality of the secondary battery. Can be changed.

It is a top view showing the state at the time of starting use of the charge and discharge test device concerning a 1st embodiment of the present invention. FIG. 2 is a sectional view taken along line AA of FIG. 1. (A) is principal part sectional drawing which shows the internal structure of the partition part in the separator used by the same charge / discharge test apparatus, (B)-(E) is the internal structure of the partition part in the separator used by the same charge / discharge test apparatus, respectively. It is principal part sectional drawing which shows the modification of. It is a top view showing the state at the time of starting use of the charge and discharge test device concerning a 2nd embodiment of the present invention. FIG. 5 is a sectional view taken along line BB of FIG. 4.

Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.
The charge / discharge test apparatus 10 according to the first embodiment of the present invention shown in FIGS. 1 and 2 performs activation and quality inspection of a laminated or square secondary battery 11 such as a produced lithium ion battery. A plurality of secondary batteries 11 are arranged side by side in the thickness direction, and a power supply side terminal (not shown) is electrically connected to a positive terminal 12 and a negative terminal 13 of each secondary battery 11 to charge and discharge at one time. It is for.
The charge / discharge test apparatus 10 includes a battery tray 16 on which a plurality of secondary batteries 11 are arranged in the thickness direction, and a charge / discharge stage 17 on which the battery tray 16 is detachably mounted to perform a charge / discharge test. ing.

Hereinafter, the details of the charge / discharge test apparatus 10 will be described. 1 and 2 is the front-rear direction (longitudinal direction) of the charge / discharge test apparatus 10 and the battery tray 16, and the vertical direction of FIG. 1 is the left-right direction (width direction) of the charge / discharge test apparatus 10 and the battery tray 16. ).
First, as shown in FIGS. 1 and 2, the battery tray 16 includes a base portion 20, end frame members 21 provided at both ends in the longitudinal direction of the base portion 20, and a longitudinal direction of the base portion 20. Side frame members 22 provided on both widthwise side portions of the end frame member 21. The battery tray 16 is provided with separators 24 that are slidably held in the longitudinal direction of the base portion 20 and that are alternately arranged with the secondary batteries 11. The side frame member 22 may connect the end frame members 21 at both ends and may restrict the widthwise position of the secondary battery 11 and the separator 24. Therefore, in the present embodiment, the side frame member 22 is provided at a part (central portion) in the height direction of the end frame member 21, but the side frame member is provided over the entire height of the end frame member 21. It may be provided, or a plurality of side frame members may be provided separately in the height direction of the end frame member 21. The base 20, the end frame 21 and the side frame 22 are preferably made of a metal such as stainless steel, but may be made of a synthetic resin.

As shown in FIGS. 1 and 2, the separator 24 includes a partition portion 25 arranged along the width direction of the secondary battery 11, and an inner surface of each side frame member 22 on both sides of the partition portion 25. And a guide portion 26 that is provided. Since the separator 24 configured as described above is slidable in the longitudinal direction of the base portion 20, as shown in FIG. 1 and FIG. The battery 11 can be easily taken in and out. In FIG. 1, there is a gap between the inner surface of each side frame member 22 and the guide section 26, but this gap is caused by the inclination of the secondary battery 11 and the separator 24 or a large displacement in the width direction. It is formed to such an extent that it can be smoothly moved along the longitudinal direction of the base portion 20 without doing so. If necessary, guide protrusions or guide grooves are provided on both outer portions of the guide portion 26, and guide grooves or guides engaging with the guide protrusions or guide grooves of the guide portion 26 are provided on the inner surface of each side frame member 22. Protrusions may be provided to guide the sliding of the separator 24.

The guide part 26 may be made of metal or synthetic resin. Further, the partition 25 is formed of an elastic body. As the material, for example, silicon rubber is preferably used, but other synthetic rubbers may be used, and the thickness, hardness, elastic modulus, and the like are appropriately selected. Can be. At this time, as shown in FIG. 3A, it is preferable to form hollow portions 27 and 28 as necessary so that the partition portion 25 is easily deformed (compressed) in the thickness direction. The structure of the partition is not limited to this. For example, as shown in FIG. 3B, a partition 30 having a rectangular hollow portion 29 formed therein, or as shown in FIG. Alternatively, a partition portion 32 in which triangular hollow portions 31 are alternately formed can be used, and the cross-sectional shape, number, and arrangement of the hollow portions can be appropriately selected. In addition, as shown in FIG. 3 (D), when a partition portion 34 made of a foamed resin or a porous material (a kind of elastic body) having a large number of pores (bubbles) 33 therein is used, a hollow portion is formed. It may not be formed, or may be formed.
Further, instead of forming the entire partition portion of the separator with an elastic body, an elastically deforming portion is formed on a surface (one or both surfaces of the base material portion) of the base material portion formed of metal, synthetic resin, or the like, facing the secondary battery 11. May be provided. In addition, as the material of the elastic deformation portion, the same material as the above-mentioned elastic body is suitably used. When the base member has a predetermined rigidity, the base member serves as a core material and can prevent deformation and breakage of the entire separator (partition).
Further, as shown in FIG. 3E, a movable plate 35 provided on the surface facing the secondary battery 11 and an elastic support portion 37 for supporting the movable plate 35 slidably in the longitudinal direction of the battery tray 16. The partition 38 may have the following. In this case, the elastic support portion 37 can be compressed via the movable plate 35 when each of the secondary batteries 11 expands, and the expansion of each of the secondary batteries 11 can be performed by moving only the movable plate 35 without moving the separator. Can be absorbed. Although the elastic supporting portion 37 is directly sandwiched between the two movable plates 35 here, a base portion (core material) made of metal, synthetic resin, or the like is provided, and the base portion (core material) is opposed to the secondary battery 11. The movable plate may be attached to the surfaces to be formed (both surfaces of the base member) via the elastic supporting portions. Further, instead of using a spring as the elastic support portion 37, silicon rubber, foamed resin, or the like similar to the above-described elastic body may be used.

Next, the charging / discharging stage 17 is provided with a tray mounting portion 40 on which the battery tray 16 is detachably mounted, and a separator 24 provided on the tray mounting portion 40 and holding the battery tray 16 with the separator 24. Pressing means 41 for pressing in the longitudinal direction. Here, the battery tray 16 has a pressing opening 42 formed in one (right side in FIGS. 1 and 2) end frame member 21. The pressing means 41 contacts a pressing portion 43 inserted into the battery tray 16 from the pressing opening portion 42 and presses the separator 24, and an outer surface of the other end frame member 21 disposed opposite to the pressing portion 43. It has a contact portion 44 that comes into contact with it. The pressing means 41 has a pressing drive unit 45 such as a hydraulic cylinder that slides the pressing unit 43 in the longitudinal direction of the battery tray 16. Then, the separators 24 and the secondary batteries 11 are alternately arranged on the battery tray 16, but the end portion between the end frame member 21 on the front end side of the apparatus (the left end in FIGS. 1 and 2) and the separator 24 has an end portion. A support member 46 is disposed, and an end pressing member 47 is disposed between the pressing portion 43 and the secondary battery 11 on the rear end side (right end in FIGS. 1 and 2).

The end support member 46 is formed in a plate shape from metal, synthetic resin, or the like. When the separator 24 of the battery tray 16 is pressed by the pressing means 41, the end support member 46 comes into contact with and supports the partition portion 25 of the front end separator 24. . If the end frame member 21 of the battery tray 16 has sufficient rigidity, the end support member 46 can be omitted. The end pressing member 47 is formed by forming a base 48 with which the pressing portion 43 of the pressing means 41 contacts with a rigid body such as a metal or a synthetic resin, and attaching an elastic portion 49 to a surface which contacts with the secondary battery 11. is there. Accordingly, when the separator 24 of the battery tray 16 is pressed by the pressing means 41, the force of the pressing portion 43 can be reliably transmitted through the end pressing member 47 and comes into contact with the end pressing member 47. The elastic part 49 can absorb variations in the size of the secondary battery 11 and expansion exceeding a specified amount during charging. At this time, the elastic portion 49 preferably has the same elasticity as the partition portion 25 of the separator 24, and the same material as the partition portion 25 is suitably used.

Here, the base side of the pressing drive unit 45 is fixed to a fixing unit 50 erected on the tray mounting unit 40, and the contact unit 44 and the bottom of the fixing unit 50 are connected by the tray mounting unit 40. The widthwise both sides of the contact portion 44 and the fixed portion 50 are connected by two upper and lower side connection portions 51 as shown in FIG. With these configurations, the contact portion 44 and the fixed portion 50 can be prevented from being deformed or tilted, and the distance therebetween can be kept constant, and the pressing means 41 can reliably press the separator 24 provided on the battery tray 16. Thus, a charge / discharge test can be performed with the secondary batteries 11 held at a predetermined pitch (at a constant interval). In the present embodiment, the contact portion 44 and the fixing portion 50 are connected at both sides in the width direction by the upper and lower two side connecting portions 51, but the side connecting portion connects the contact portion 44 and the fixing portion 50. The shape (thickness and height dimension), the number, and the arrangement can be appropriately selected as long as they can prevent deformation and inclination. Therefore, the side connecting portion may be provided in the entire height direction of the contact portion 44 and the fixing portion 50, or the side connecting portion may be omitted if the contact portion 44 and the fixing portion 50 have sufficient strength. Is also good.

When the pressing drive unit 45 is driven to extend the pressing unit 43 from the state at the start of use shown in FIGS. 1 and 2, each of the rechargeable batteries 11, each of the separators 24 and the end is pressed by the end pressing material 47. The part support member 46 moves to the contact part 44 side. Then, the end support member 46 comes into contact with the end frame member 21, and the pressing portion 43 stops in a state where the separators 24, the end support member 46, and the end pressing member 47 are in close contact with each other. Then, when the guide portions 26 of the adjacent separators 24 come into contact with each other, each of the secondary batteries 11 and each of the separators 24 are held at regular intervals. At this time, the partition 25 adjacent to the secondary battery 11 may be in close contact, or a gap (for example, 0.5 to 1 mm) may be formed. In any case, since the separators 24 alternately arranged with the secondary batteries 11 are pressed by the pressing means 41 and held at equal intervals, expansion and contraction of each of the secondary batteries 11 due to charging and discharging occurs. Even though, each secondary battery 11 and each separator 24 are absorbed by the elastic deformation of each partition portion 25 and elastic portion 49, and do not move in the front-rear direction of the device (the left-right direction in FIGS. 1 and 2). That is, even if each of the secondary batteries 11 repeatedly expands and contracts, the positions of the positive terminal 12 and the negative terminal 13 do not change. A mechanism for adjusting the position of the power supply side terminal is not required, and the configuration of the device can be simplified. In addition, the expansion of each secondary battery 11 by a specified amount or more is restricted by each partition portion 25 and the elastic portion 49, so that the capacity of each secondary battery 11 and the occurrence of variation are suppressed. In the present embodiment, the partition 25 of each separator 24 is arranged on the front side of each secondary battery 11, but each separator 24 is arranged such that the partition 25 of each separator 24 is arranged on the rear side of each secondary battery 11. The direction of 24 may be reversed, and the end support 46 and the end pressing member 47 may be exchanged.

Next, a charge / discharge test apparatus 55 according to a second embodiment of the present invention will be described. In addition, about the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.
The charge / discharge test device 55 differs from the charge / discharge test device 10 in that, as shown in FIGS. 4 and 5, each of the end frame members 21 of the battery tray 56 has a pressing opening 42 formed therein. The pressing means 58 of the stage 57 has a pair of pressing portions 43 that are inserted into the battery tray 56 from the respective pressing openings 42.
According to the charge / discharge test apparatus 55, the same operation and effect as those of the charge / discharge test apparatus 10 can be obtained. In the charge / discharge test device 55, the reaction force is canceled by simultaneously applying pressure from both front and rear directions (both right and left directions in FIGS. 4 and 5) by the pair of pressing portions 43, so that a load is applied to the battery tray 56. Absent. Therefore, the battery tray 56 can be made of a synthetic resin to reduce cost and weight, thereby improving maintainability.

As described above, the embodiments of the present invention have been described. However, the present invention is not limited to the configurations described in the above embodiments, and can be considered within the scope of the matters described in the claims. Other embodiments and modifications are also included.
For example, in the above-described embodiment, the separator is formed in a U-shape in plan view, but the separator may have guide portions on both sides in the width direction of the partition portion, and may be formed in an I-shape in plan view. May be.

10: Charge / discharge test apparatus, 11: secondary battery, 12: positive terminal, 13: negative terminal, 16: battery tray, 17: charge / discharge stage, 20: base, 21: end frame member, 22: side Frame member, 24: separator, 25: partition, 26: guide, 27, 28, 29: hollow, 30: partition, 31: hollow, 32: partition, 33: pore (bubble), 34: Partitioning part, 35: movable plate, 37: elastic supporting part, 38: partitioning part, 40: tray mounting part, 41: pressing means, 42: pressing opening, 43: pressing part, 44: contact part, 45 : Press drive unit, 46: end support, 47: end press, 48: base, 49: elastic, 50: fixed, 51: side connection, 55: charge / discharge tester, 56: battery Tray, 57: charge / discharge stage, 58: pressing means

Claims (6)

A plurality of secondary batteries are arranged side by side in the thickness direction, and in a charge / discharge test apparatus for performing charge / discharge by electrically connecting a power supply side terminal to a positive terminal and a negative terminal of each of the secondary batteries,
A base portion, end frame members provided at both ends in the longitudinal direction of the base portion, and side frame members provided on both widthwise sides of the end frame member along the longitudinal direction of the base portion; A, a battery tray provided with separators that are slidably held in the longitudinal direction of the base portion and that are alternately arranged with the secondary batteries,
A tray mounting portion on which the battery tray is removably mounted; and pressing means provided on the tray mounting portion and pressing the separator held by the battery tray in a longitudinal direction of the battery tray. A charge / discharge test apparatus comprising a charge / discharge stage. 2. The charge / discharge test device according to claim 1, wherein the battery tray has a pressing opening formed in one of the end frame members, and wherein the pressing unit moves the battery tray from the pressing opening to the battery tray. 3. A charge / discharge test apparatus comprising: a pressing portion inserted inside; and a contact portion disposed to face the pressing portion and abutting against an outer surface of the other end frame member. 2. The charge / discharge test device according to claim 1, wherein the battery tray has a pressing opening formed in each of the end frame members, and the pressing unit is configured to move the battery tray from each of the pressing openings. A charge / discharge test device having a pair of pressing portions inserted therein. 4. The charge / discharge test apparatus according to claim 1, wherein the separator is a partition disposed along a width direction of the secondary battery, and the side frames are disposed on both sides of the partition. 5. A charge / discharge test device, comprising: a guide portion provided along an inner surface of the member. 5. The charge / discharge test apparatus according to claim 4, wherein the partition section is formed of an elastic body, or at least an elastic deformation section is provided on a surface facing the secondary battery. 5. The charging / discharging test apparatus according to claim 4, wherein the partition portion has a movable plate provided on a surface facing the secondary battery, and an elasticity for supporting the movable plate slidably in a longitudinal direction of the battery tray. A charge / discharge test apparatus comprising: a support section.

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