JP2022054948A - Charging/discharging device - Google Patents

Abstract

To provide a charging/discharging device capable of simplifying a structure and improving a maintenance property.SOLUTION: In a charging/discharging device 10, while a plurality of secondary batteries 11 that can be charged/discharged is aligned in a thickness direction and stored in a tray 12, first and second charging/discharging probes 15 and 16 are respectively connected to a positive pole 13 and a negative pole 14 of each secondary battery 11 to charge/discharge the secondary battery 11. On the first and second charging/discharging probes 15 and 16 side, a plurality of first magnetic attraction bodies 22 is provided in the thickness direction of the secondary battery 11, and on the secondary battery 11 side, a plurality of second magnetic attraction bodies 28 making pairs with the first magnetic attraction bodies 22 is provided in the thickness direction of the secondary battery 11. By magnetic attraction of the pairs of the first magnetic attraction bodies 22 and the second attraction bodies 28, the first and second charging/discharging probes 15 and 16, and the positive pole 13 and the negative pole 14 of the secondary battery 11 are positioned.SELECTED DRAWING: Figure 4

Description

The present invention relates to a charging / discharging device that charges / discharges a plurality of secondary batteries.

In recent years, rechargeable and dischargeable secondary batteries such as lithium ion batteries and nickel-metal hydride batteries have been widely used in electric vehicles, hybrid vehicles, and other electric products.
In the manufacture of this battery, as with the conventional charge / discharge battery, a charge / discharge test of the manufactured battery is performed to inspect whether or not the battery satisfies a predetermined performance and characteristic before shipping.
In this charge / discharge test, a plurality of secondary batteries are arranged in a tray in the thickness direction, and the power supply (charge / discharge power supply) of the charge / discharge device is connected to the terminals of each secondary battery via the charge / discharge probe (charge / discharge power supply). It is performed by connecting to the positive electrode and the negative electrode, respectively.
However, the plurality of secondary batteries housed in the tray are not necessarily arranged evenly (at the same pitch). For example, among the plurality of secondary batteries, some adjacent secondary batteries may come into contact with each other. Since it is arranged with a gap, the terminals of some secondary batteries may not be able to connect to the charge / discharge probe.

Therefore, for example, Patent Document 1 includes a plurality of charge / discharge units having a power supply side terminal for each of one or more sets of secondary batteries, and the charge / discharge units are arranged in the arrangement direction of the secondary batteries. Disclosed is a charge / discharge device slidably attached to. Further, it is described that the charge / discharge unit is formed by inserting the charging / discharging unit between the spacers that sandwich the secondary batteries one by one to form a copying tooth for positioning with respect to the secondary battery.
Patent Document 2 includes a plurality of spacers arranged before and after the stacking direction of the plurality of cells, and the protrusion dimension of the protruding portion of the spacer is set from the front side to the rear side in the stacking direction of each cell cell. The support members for supporting a plurality of probes are arranged in parallel to the stacking direction of each cell, and the support members are configured to be displaceable in the stacking direction of each cell. The formed locking portion and the protruding portion corresponding to the locking portion overlap each other by a predetermined dimension, and the charge / discharge is gradually reduced from the front side to the rear side in the stacking direction of each cell. The device is disclosed.

Patent Document 3 includes a contact unit that moves each contact probe at equal intervals following the movement of each positive electrode terminal and each negative electrode terminal due to expansion and contraction of each secondary battery during charging / discharging. Discharge devices are disclosed.
In Patent Document 4, the position fluctuation of the positive electrode terminal and the negative electrode terminal is limited by adjusting the pressing force of the pressing mechanism according to the expansion and contraction of the secondary battery during the charge / discharge test, and a plurality of secondary batteries are used. A charge / discharge tester that holds at a predetermined pitch is disclosed.
Patent Document 5 describes a partition portion in which separators slidably held in the longitudinal direction of the base of the battery tray and alternately arranged with the secondary battery are arranged along the width direction of the secondary battery. It has guide portions provided on both sides of the partition portion, and when pressed by the pressing means, the guide portions of the adjacent separators come into contact with each other, and each secondary battery and each separator are held at regular intervals. A charge / discharge test device is disclosed which absorbs the expansion and contraction of each secondary battery due to charging / discharging by elastic deformation of each partition portion and limits the expansion of each secondary battery by a specified amount or more.

Japanese Patent No. 5312000 Japanese Unexamined Patent Publication No. 2013-219896 Japanese Patent No. 6461401 Japanese Patent No. 6644230 Japanese Patent No. 6490287

However, the conventional technique still has the following problems to be solved.
In the technique of Patent Document 1, the configuration of the charge / discharge unit becomes complicated, and the shape of the spacer needs to be a shape corresponding to the copying tooth. Further, since the copying tooth is configured to be inserted between the spacers, it is easily worn and maintenance is frequently performed.
In the technique of Patent Document 2, since the shapes of the plurality of spacers are not all the same shape, normal operation cannot be performed if the spacers are arranged in the wrong place.
The technique of Patent Document 3 is complicated in configuration because it is necessary to move each contact probe at equal intervals following the movement of each positive electrode terminal and each negative electrode terminal.
The technique of Patent Document 4 is complicated in configuration because it is necessary to adjust the pressing force of the pressing mechanism according to the expansion and contraction of the secondary battery.
In the technique of Patent Document 5, the separator has a partition portion and a guide portion, and the expansion and contraction of each secondary battery due to charging and discharging are absorbed by the elastic deformation of each partition portion, so that the separator is made of a specific material. Also, the configuration becomes complicated.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a charging / discharging device that can be easily configured and has improved maintainability as compared with the conventional case.

In the charging / discharging device according to the present invention according to the above object, a plurality of charge / dischargeable secondary batteries are arranged in a tray in the thickness direction, and the positive electrode and the negative electrode of each of the secondary batteries are first and first. In the charge / discharge device that charges / discharges the secondary battery by connecting the charge / discharge probes of 2 respectively.
The first magnetic attraction is on the first and second charge / discharge probe sides, and the second magnetic attraction paired with the first magnetic attraction is on the secondary battery side. Multiple batteries are provided along the thickness direction of the next battery.
Positioning of the first and second charge / discharge probes and the positive electrode and the negative electrode of the secondary battery is performed by the magnetic attraction force of the paired first magnetic attraction body and the second magnetic attraction body. ..

In the charge / discharge device according to the present invention, the positioning of the first and second charge / discharge probes and the positive electrode and the negative electrode of the secondary battery is performed by pairing the first magnetic attraction body and the second magnetic attraction. The body can be placed in contact with or with a gap by the magnetic attraction.

In the charge / discharge device according to the present invention, the first magnetic attraction is on the first and second charge / discharge probe sides, for each pair of the first and second charge / discharge probes, or for a plurality of pairs. It is preferable that the first and second charge / discharge probes to be paired are provided for each set divided into a plurality of sets.

In the charging / discharging device according to the present invention, both the first and second magnetic attraction bodies can be magnets.
It is preferable that the magnets on the first and second charge / discharge probe sides and the secondary battery side have S poles and N poles alternately arranged along the thickness direction of the secondary battery, respectively.

In the charging / discharging device according to the present invention, either one of the first and second magnetic attraction bodies may be a magnet, and either one of the first and second magnetic attraction bodies may be a magnetic material.
The magnet may be an electromagnet.
Further, it is preferable that the magnet is provided with irregularities.

In the charging / discharging device according to the present invention, it is preferable that a spacer is arranged between the adjacent secondary batteries housed in the tray, and the spacer is provided with the second magnetic attraction body.

In the charging / discharging device according to the present invention, the first magnetic attraction may be a magnet, and the second magnetic attraction may be a connection portion having magnetic characteristics of the secondary battery.

In the charging / discharging device according to the present invention, the first magnetic attraction body can move along the thickness direction of the secondary battery, and the first magnetic attraction body moves with the magnetic attraction force. It is preferable that the first and second charge / discharge probes move with respect to the positive electrode and the negative electrode of the secondary battery to perform the positioning.

The charge / discharge device according to the present invention is provided with a first magnetic attraction on the first and second charge / discharge probe sides and a second magnetic attraction on the secondary battery side, respectively, and is paired with the first and second. The magnetic attraction force of the second magnetic attraction body positions the first and second charge / discharge probes and the positive and negative electrodes of the secondary battery. Therefore, as in the conventional case, the first and second charge / discharge probes. Accurate positioning can be performed without complicating the side configuration and without using comb teeth or the like.
Therefore, the configuration can be simplified and the maintainability can be improved as compared with the conventional case.

(A) to (C) are a plan view, a front view, and a side view of a secondary battery that is charged and discharged by the charging / discharging device according to the embodiment of the present invention, respectively, and (D) to (F) are secondary, respectively. The plan view, front view, and side view of the spacer used when the battery is stored in the tray, (G) to (I) are the plan view, the front view, and the side view showing the state in which the secondary battery is mounted on the spacer, respectively. Is. It is explanatory drawing which shows the accommodating state in the tray of the secondary battery which charges and discharges by the charge and discharge device. (A) and (B) are a plan view and a side view showing a state in which the secondary battery is housed in a tray, respectively. (A) to (C) are explanatory views from the side view of the connection state between the charge / discharge probe pin of the charge / discharge device according to the embodiment of the present invention and the secondary battery. (A) to (C) are explanatory views of the connection state between the charge / discharge probe pin of the charge / discharge device and the secondary battery as viewed from the front. (A) to (C) are explanatory views from the side view of the connection state between the charge / discharge probe pin of the charge / discharge device and the secondary battery according to the modified example. (A) to (C) are a plan view, a front view, and a side view of a secondary battery which is charged and discharged by the charging / discharging device according to another embodiment of the present invention, respectively. (A) to (C) are explanatory views of the connection state between the charge / discharge probe pin of the charge / discharge device and the secondary battery as viewed from the front.

Subsequently, an embodiment embodying the present invention will be described with reference to the attached drawings, and the present invention will be understood.
As shown in FIGS. 1 to 5, in the charging / discharging device 10 according to the embodiment of the present invention, a plurality of (here, 10) secondary batteries 11 capable of charging / discharging are arranged in a tray (thickness direction). The first and second charge / discharge probes 15 and 16 are connected to the positive electrode 13 and the negative electrode 14 of each of the secondary batteries 11 in a state of being housed in the transport tray) 12, and the plurality of secondary batteries 11 are charged / discharged. (Charging / discharging test (charging / discharging inspection)) is a device that performs at the same time. As shown in FIGS. 1A to 1C, the secondary battery 11 has a rectangular parallelepiped shape having wide surfaces on both sides in the thickness direction.
Hereinafter, it will be described in detail.

As shown in FIGS. 4 (A) to 4 (C) and FIGS. 5 (A) to 5 (C), the charge / discharge device 10 is a charge / discharge shelf (not shown) provided with an accommodating portion 17 for accommodating the tray 12. )have. In the accommodating portion 17, above the plurality of secondary batteries 11 arranged side by side on the tray 12, the first and first pairs that can abut on the positive electrode 13 and the negative electrode 14 of each secondary battery 11 are formed. 2 charge / discharge probes 15 and 16 are arranged, and the first and second charge / discharge probes 15 and 16 are connected to a power source (charge / discharge power source).
One power source is used for one secondary battery 11, and the maximum number of secondary batteries 11 accommodated and arranged in one tray 12 is the same as the number of power sources. There are various types of the secondary battery, such as a lithium ion battery and a nickel hydrogen battery, but the secondary battery is not particularly limited as long as it can be charged and discharged.

In the accommodating portion 17, an elevating means 18 for raising and lowering the first and second charge / discharge probe pins 15 and 16 with respect to the tray 12 in which the secondary battery 11 is accommodated is provided. The elevating means 18 includes an elevating portion main body 19 arranged along the thickness direction of the secondary battery 11, a plurality of mounting portions 20 provided at the same pitch in the longitudinal direction of the elevating portion main body 19, and each of them. Both sides of the mounting portion 20 in the width direction have contact portions 21 slidably provided in the vertical direction thereof.
The mounting portion 20 is provided with first and second charge / discharge probe pins 15 and 16 so that their axes are aligned in the vertical direction, and a first magnet (first magnet) is provided on the lower end surface of each contact portion 21. 22 is provided (provided for each of the first and second charge / discharge probe pins 15 and 16 to which the first magnet 22 is paired). In the free state, the first and second charge / discharge probe pins are positioned so that the lower end positions of the first and second charge / discharge probe pins 15 and 16 are above the lower end surface of each contact portion 21. 15 and 16 are provided in the mounting portion 20.

As shown in FIGS. 2, 3 (A) and 3 (B), the tray 12 is erected on a rectangular bottom plate 23 and both ends of the bottom plate 23 in the longitudinal direction (thickness direction of the secondary battery 11). The side plate 24 is composed of a side plate 24 and a connecting shaft 25 that connects the opposite side plates 24 to each other at the upper end portion thereof, and the secondary battery 11 can be taken in and out from the open portion at the upper portion.
As shown in FIGS. 2, 3 (A) and 3 (B), spacers 26 are arranged between adjacent secondary batteries 11 housed in the tray 12. The spacer 26 is not particularly limited as long as it is made of a material having an insulating property.
As shown in FIGS. 1 (D) to 1 (I), the height of the spacer 26 is about the same as that of the secondary battery 11 excluding the positive electrode 13 and the negative electrode 14, and the width thereof is the same as that of the secondary battery 11. It is wider than the width, and both sides in the width direction protrude to one side, forming a U-shape (concave cross section) in a plan view. In this way, the secondary battery 11 is arranged in the recess 27 formed in the spacer 26. Specifically, the inner width of the recess 27 is slightly wider than the width of the secondary battery 11, and the depth of the recess 27 is slightly deeper than the thickness of the secondary battery 11.

Note that FIG. 2 describes a situation in which the secondary battery 11 is housed in the tray 12 in a state of being mounted on the spacer 26 for convenience, but in reality, a plurality of (secondary batteries 11 in the tray 12) are described. The secondary battery 11 is housed in each recess 27 in a state where the spacer 26 (maximum number of houses) is housed in the tray 12, and the state shown in FIGS. 3 (A) and 3 (B) is obtained.
As shown in FIGS. 1 (D) to (I), FIGS. 3 (A) and 3 (B), the spacer 26 is moved up and down on both sides of the recess 27 (the secondary battery 11 inserted in the recess 27). A second magnet (an example of a second magnetic attraction) 28 paired with the first magnet 22 provided at the contact portion 21 of the means 18 is provided. Therefore, the pair of first magnets 22 and the secondary battery 11 are located on both sides in the width direction of each secondary battery 11 in a plan view and are provided on the first and second charge / discharge probe pins 15 and 16 sides. The pair of second magnets 28 provided on the side has the same number of sets as the maximum number of secondary batteries 11 accommodated in the tray 12 along the thickness direction of the secondary battery 11 (10 sets in this case). It is provided.
The first magnet 22 and the second magnet 28 are attracted to each other by a magnetic attraction force, and one of the first and second magnets 22 and 28 has an S pole and the other has an N pole. ..

In use, first, as shown in FIGS. 2, 3 (A) and 3 (B), the tray 12 in which a plurality of secondary batteries 11 are housed in the recesses 27 of the spacer 26, respectively. Is stored in the accommodating portion 17 as shown in FIGS. 4 (A) and 5 (A). As a result, as shown in FIG. 4A, the secondary battery 11 is arranged below the first and second charge / discharge probes 15 and 16 provided in the elevating means 18.
A plurality of pairs of first magnets 22 are provided on the elevating means 18 for each of the first and second charge / discharge probe pins 15 and 16 at the same pitch along the thickness direction thereof. A plurality of pairs of second magnets 28 are provided in spacers 26 that are accommodated and arranged so as to be horizontally movable in the tray 12. Therefore, with respect to the first and second charge / discharge probes 15 and 16, the positive electrode 13 and the negative electrode 14 of the secondary battery 11 in contact with the probes 15 and 16 have the length of the tray 12 as shown in FIG. 4 (A). The position is offset in the direction.

Next, as shown in FIGS. 4 (B) and 5 (B), the elevating means 18 is lowered with respect to the secondary battery 11 housed and arranged in the tray 12. At this time, the second magnet 28 is attracted to the first magnet 22 by the magnetic attraction force between the first magnet 22 provided on the contact portion 21 and the corresponding second magnet 28, and the tray. After the spacer 26 moves within 12, the first magnet 22 and the second magnet 28 come into contact with each other.
As a result, the secondary battery 11 moves in the tray 12 so that the positive electrode 13 and the negative electrode 14 of the secondary battery 11 overlap with the first and second charge / discharge probes 15 and 16 in a plan view. Then, the positive electrode 13 and the negative electrode 14 of the secondary battery 11 are positioned with respect to the first and second charge / discharge probes 15 and 16. If this positioning is performed, the first magnet 22 and the second magnet 28 do not necessarily have to come into contact with each other, and are arranged with a gap (for example, about 0.1 mm to several mm). But it may be.

Here, it is preferable that the first magnet 22 can move along the thickness direction of the secondary battery 11 according to the position of the second magnet 28.
Specifically, by making the plurality of mounting portions 20 individually movable along the elevating portion main body 19, the first and second charge / discharge probes provided integrally with each mounting portion 20 are provided. The pins 15 and 16 and the first magnet 22 can be made movable along the elevating part main body 19.
As a result, even if the plurality of spacers 26 provided with the second magnet 28 are housed and arranged in the tray 12 at different intervals, the first magnet 22 provided in the contact portion 21 corresponds to the first magnet 22. The first magnet 22 is attracted to the second magnet 28 by the magnetic attraction force with the second magnet 28, the mounting portion 20 moves along the elevating part main body 19, and then the first magnet 22 and the second magnet 22. The magnet 28 of 2 comes into contact with the magnet 28.
Therefore, the first and second charge / discharge probes 15 and 16 provided in each mounting portion 20 are flat with respect to the positive electrode 13 and the negative electrode 14 of the secondary battery 11 arranged in the recess 27 of each spacer 26. The first and second charge / discharge probes 15 and 16 are positioned with respect to the positive electrode 13 and the negative electrode 14 of the secondary battery 11 so as to move so as to be visually overlapped with each other.

Subsequently, as shown in FIGS. 4 (C) and 5 (C), by further lowering the elevating means 18, the elevating portion main body 19 is lowered, and the first and second units attached to the attachment portion 20 are attached. The charge / discharge probes 15 and 16 can be brought into contact with the positive electrode 13 and the negative electrode 14 of the secondary battery 11, respectively.
Then, the same or different charge / discharge tests are performed at each power source according to a preset test program.
After charging / discharging the secondary battery 11 by the above method, by raising the elevating means 18, the elevating part main body 19 is raised, and the first and second charging / discharging probes 15 and 16 are second. The first magnet 22 is separated from the second magnet 28 by further raising the elevating means 18 away from the positive electrode 13 and the negative electrode 14 of the next battery 11. Here, the first magnet 22 separates from the second magnet 28 due to the weight of the spacer 26 (secondary battery 11 or the like) against the magnetic attraction.

It should be noted that the first magnet of each pair described above may be composed of S poles or N poles, and the S poles and N poles may be alternately arranged along the thickness direction of the secondary battery. In this case, the second magnet of each pair is also composed of N pole or S pole corresponding to the first magnet, and the N pole and S pole are alternately arranged along the thickness direction of the secondary battery. As a result, a repulsive force (repulsive force) acts between the magnets adjacent to each other in the thickness direction, so that more accurate positioning is possible.
Further, although the surfaces of the first and second magnets described above are smooth, they can be roughened (provided with irregularities), whereby the contact state between the first magnet and the second magnet is maintained. It becomes easier to perform and more accurate positioning is possible.
Then, an electromagnet magnetized by passing electricity through either or both of the first and second magnets can also be used.
Further, a magnet can be used for either the first or second magnetic attraction body, and a magnetic material (ferromagnetic material) can be used for the other. As the magnetic material, iron oxide, chromium oxide, cobalt, ferrite, non-metal oxide magnetic material (oxide) and the like can be used.

Subsequently, the charging / discharging device 10a according to the modified example will be described with reference to FIGS. 6A to 6C. Since the basic configuration of the charging / discharging device 10a is substantially the same as that of the charging / discharging device 10 described above, the same members will be described with the same reference numerals.
In the charging / discharging shelf accommodating portion 17 of the charging / discharging device 10a, the elevating means 18a for raising and lowering the first and second charging / discharging probe pins 15 and 16 with respect to the tray 12 in which the secondary battery 11 is accommodated and arranged. Is provided. The elevating means 18a includes an elevating portion main body 19 arranged along the thickness direction of the secondary battery 11 and a plurality of mounting portions 20a and 20b provided at intervals in the longitudinal direction of the elevating portion main body 19. And, on both sides of each of the mounting portions 20a and 20b in the width direction, there are contact portions 21 slidably provided in the vertical direction thereof.

A plurality of pairs of the first and second charge / discharge probe pins 15 and 16 are divided into a plurality of sets, and the first and second charge / discharge probe pins 15 and 16 for each of the mounting portions 20a and 20b are divided into sets. 16 is provided. Specifically, the mounting portion 20a is provided with two pairs of first and second charge / discharge probe pins 15 and 16 as a set, and the mounting portion 20b is provided with three pairs of first and second charge / discharge probe pins. The charge / discharge probe pins 15 and 16 are provided as a set.
The abutting portion 21 is slidably provided on one side of the mounting portion 20a (here, the positions corresponding to the first and second charge / discharge probes 15 and 16 on the left side) of the mounting portion 20a, and is also mounted. The contact portion 21 is slidably provided in the portion 20b on the other side of the mounting portion 20b (here, the positions corresponding to the first and second charge / discharge probes 15 and 16 on the right side) (that is, the present). The contact portion 21 is provided so as to include at least both ends in the thickness direction of the secondary battery 11).

As described above, since the contact portion 21 is provided at intervals along the thickness direction of the secondary battery 11, the contact portion 21 is paired with the first magnet 22 provided on the lower end surface of the contact portion 21. The second magnet 28 is also provided at intervals along the thickness direction of the secondary battery 11.
Specifically, of the two pairs of first and second charge / discharge probe pins 15 and 16 provided in the mounting portion 20a, the first and second charge / discharge probes located on one side (here, the left side). A second magnet 28 is provided in the spacer 26 into which the secondary battery 11 to which the 15 and 16 are connected is inserted, and three pairs of first and second charge / discharge probes provided in the mounting portion 20b. A second magnet is inserted in the spacer 26 into which the secondary battery 11 to which the first and second charge / discharge probes 15 and 16 are connected, which are located on the other side (here, the right side) of the pins 15 and 16 is inserted. 28 is provided (ie, the second magnet 28 is provided on some spacers 26).

In use, first, the tray 12 containing the plurality of secondary batteries 11 is housed in the storage section 17 as shown in FIG. 6A.
Next, as shown in FIG. 6B, the elevating means 18a is lowered with respect to the secondary battery 11 housed and arranged in the tray 12. At this time, the second magnet 28 is attracted to the first magnet 22 by the magnetic attraction force between the first magnet 22 and the second magnet 28, and the spacer 26 provided with the second magnet 28 and the spacer 26. After the spacer 26 located in the vicinity of the spacer 26 moves in the tray 12, the first magnet 22 and the second magnet 28 come into contact with each other.
As a result, the secondary battery 11 moves in the tray 12 so that the positive electrode 13 and the negative electrode 14 of the secondary battery 11 overlap with the first and second charge / discharge probes 15 and 16 in a plan view. Then, the positive electrode 13 and the negative electrode 14 of the secondary battery 11 are positioned with respect to the first and second charge / discharge probes 15 and 16.

Here, it is preferable that the first magnet 22 can move along the thickness direction of the secondary battery 11 according to the position of the second magnet 28.
Specifically, by making the plurality of mounting portions 20a and 20b individually movable along the elevating portion main body 19, the first and second mounting portions 20a and 20b are integrally provided. The charge / discharge probe pins 15 and 16 and the first magnet 22 can be moved along the elevating part main body 19. In this case, the contact portion 21 is attached to the mounting portion 20b, and the central portion in the thickness direction of the mounting portion 20b (here, among the three pairs of the first and second charge / discharge probe pins 15 and 16, the first of the central portions, It is preferable to provide the second charge / discharge probe (position corresponding to the second charge / discharge probe 15 and 16) so as to be slidable.
As a result, the first and second charge / discharge probes 15 and 16 provided in the mounting portions 20a and 20b with respect to the positive electrode 13 and the negative electrode 14 of the secondary battery 11 arranged in the recess 27 of each spacer 26. However, they move so as to overlap each other in a plan view, and the first and second charge / discharge probes 15 and 16 are positioned with respect to the positive electrode 13 and the negative electrode 14 of the secondary battery 11.

Subsequently, as shown in FIG. 6C, by further lowering the elevating means 18a, the elevating portion main body 19 is lowered, and the first and second charge / discharge probes 15 attached to the attachment portions 20a and 20b are lowered. , 16 can be brought into contact with the positive electrode 13 and the negative electrode 14 of the secondary battery 11.
Therefore, the number of paired first and second magnets 22 and 28 can be made smaller than the number of secondary batteries 11, so that the device configuration can be further simplified.
The number of pairs of the first and second charge / discharge probe pins 15 and 16 divided into a plurality of sets per set is the secondary battery 11 for the first and second charge / discharge probes 15 and 16. The positive electrode 13 and the negative electrode 14 are not particularly limited as long as they can be positioned, and may be, for example, about 4 pairs or 5 pairs. At this time, the spacer may be configured to have a plurality of accommodating holes (through holes) capable of accommodating the secondary battery corresponding to the above-mentioned set.

Next, the charging / discharging device 30 according to another embodiment of the present invention will be described with reference to FIGS. 7 (A) to 7 (C) and FIGS. 8 (A) to 8 (C). The same members as those of the charging / discharging device 10 are designated by the same reference numerals, and detailed description thereof will be omitted.
The secondary battery 11a charged and discharged by the charging / discharging device 30 has a rectangular shape having wide surfaces on both sides in the thickness direction, and a positive electrode 13a and a negative electrode 14a are provided at the upper ends thereof, and the positive electrode 13a and the negative electrode are provided. A bolted battery in which bolts (an example of a connection portion having magnetic characteristics) 31 are provided in each of 14a. The bolt 31 is attached to the positive electrode 13a and the negative electrode 14a on the center side in the width direction of the secondary battery 11a in a state of protruding upward. In the secondary battery 11a, the portion other than the positive electrode 13a, the negative electrode 14a, and the bolt does not have magnetic characteristics, and the bolt 31 becomes the second magnetic attraction body.

In the charging / discharging shelf accommodating portion 17 of the charging / discharging device 30, the elevating means 32 for raising and lowering the first and second charging / discharging probe pins 15 and 16 with respect to the tray 12 in which the secondary battery 11a is accommodated and arranged. Is provided.
The elevating means 32 includes an elevating portion main body 19 arranged along the thickness direction of the secondary battery 11a, a plurality of mounting portions 33 provided at the same pitch in the longitudinal direction of the elevating portion main body 19, and each of them. A contact portion 21a provided so as to be slidable in the vertical direction thereof is provided at the central portion in the width direction of the mounting portion 33. First and second charge / discharge probe pins 15 and 16 are provided on both sides of the mounting portion 33 in the width direction so that their axes are aligned in the vertical direction, and the lower end surfaces (first and first) of each contact portion 21a are provided. A first magnet 22 is provided on the charge / discharge probe pins 15 and 16 on the side of the charge / discharge probe pins 2. The first magnet 22 is arranged between the first charge / discharge probe pin 15 and the second charge / discharge probe pin 16 in a plan view.

In use, as shown in FIG. 8B, the elevating means 32 is lowered with respect to the secondary battery 11a housed and arranged in the tray 12 shown in FIG. 8A. At this time, the magnetic attraction force between the first magnet 22 and the bolt 31 attracts the bolt 31 of the secondary battery 11a to the first magnet 22, and the first magnet 22 and the bolt 31 come into contact with each other. Specifically, the secondary battery 11 moves in the tray 12 so that the positive electrode 13a and the negative electrode 14a of the secondary battery 11 overlap with the first and second charge / discharge probes 15 and 16 in a plan view. Then, the positive electrode 13a and the negative electrode 14a of the secondary battery 11 are positioned with respect to the first and second charge / discharge probes 15 and 16.
Here, by making the plurality of mounting portions 33 individually movable along the elevating portion main body 19, the first and second charge / discharge probe pins 15 provided integrally with each mounting portion 33 are provided. , 16 and the first magnet 22 can also be made movable along the elevating part main body 19. As a result, the first magnet 22 is attracted to the bolt 31 of the secondary battery 11a by the magnetic attraction force between the first magnet 22 and the bolt 31, and the first magnet 22 and the bolt 31 come into contact with each other. Positioning of the first and second charge / discharge probes 15 and 16 with respect to the positive electrode 13a and the negative electrode 14a of the next battery 11 is performed.
As a result, as shown in FIG. 8C, by further lowering the elevating means 32, the elevating portion main body 19 is lowered, and the first and second charge / discharge probes 15 and 16 attached to the attachment portion 33 are lowered. Can be brought into contact with the positive electrode 13a and the negative electrode 14a of the secondary battery 11.

Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the configuration described in the above-described embodiments, and the matters described in the claims. It also includes other embodiments and variations that may be considered within the scope. For example, the case where the charging / discharging device of the present invention is configured by combining a part or all of the above-described embodiments and modifications thereof is also included in the scope of rights of the present invention.
In the above embodiment, the first magnet (first magnetic attraction body) is made to correspond to the positions of the first and second charge / discharge probes, and the second magnet (second magnetic attraction body) is attached. The case of corresponding to the position of the secondary battery has been described, but if the mounting positions of the plurality of first and second charge / discharge probes with respect to the elevating means and the like and the position of the secondary battery with respect to the tray are determined respectively. (If a plurality of first and second charge / discharge probes are attached to the elevating means or the like in a stationary state, and the secondary battery is housed and arranged in the tray in a stationary state), the first magnet is attached to the first magnet. , The second magnet may be provided without corresponding to the position of the second charge / discharge probe and the second magnet may be provided without corresponding to the position of the secondary battery (for example, the second magnet may be provided on the tray). can).

Further, in the above-described embodiment, when the first and second charge / discharge probe pins come into contact with the secondary battery (positive electrode and negative electrode), the first and second batteries are placed on the tray in which the secondary battery is housed. Although the case where the charge / discharge probe pin is lowered has been described, the tray in which the secondary battery is housed may be raised with respect to the fixedly arranged first and second charge / discharge probe pins.
In the above embodiment, the case where the number of secondary batteries housed in the tray is 10 has been described, but the present invention is not particularly limited, and may be less than 9 (for example, 5 or more). The number may exceed 10 (the upper limit is, for example, about 30), but as the number of secondary batteries accommodated in the tray increases, the secondary batteries are located with respect to the positions of the first and second charge / discharge probes. Since the positions of the positive electrode and the negative electrode are likely to shift, the larger the number of secondary batteries, the more remarkable the action and effect of the present invention.

10, 10a: Charge / discharge device, 11, 11a: Secondary battery, 12: Tray, 13, 13a: Positive electrode, 14, 14a: Negative electrode, 15: First charge / discharge probe, 16: Second charge / discharge probe, 17: Accommodating part, 18, 18a: Elevating means, 19: Elevating part main body, 20, 20a, 20b: Mounting part, 21, 21a: Contact part, 22: First magnet (first magnetic attraction body), 23: Bottom plate, 24: Side plate, 25: Connecting shaft, 26: Spacer, 27: Recess, 28: Second magnet (second magnetic attraction), 30: Charge / discharge device, 31: Bolt (connection part), 32: Lifting means, 33: Mounting part

Claims (11)

With a plurality of rechargeable and dischargeable secondary batteries arranged in a tray in the thickness direction, the first and second charge / discharge probes are connected to the positive electrode and the negative electrode of each of the secondary batteries, respectively. In a charging / discharging device that charges / discharges the next battery
The first magnetic attraction is on the first and second charge / discharge probe sides, and the second magnetic attraction paired with the first magnetic attraction is on the secondary battery side. Multiple batteries are provided along the thickness direction of the next battery.
Positioning of the first and second charge / discharge probes and the positive electrode and the negative electrode of the secondary battery is performed by the magnetic attraction force of the paired first magnetic attraction body and the second magnetic attraction body. A charging / discharging device characterized by the fact that. In the charging / discharging device according to claim 1, the positioning of the first and second charging / discharging probes and the positive electrode and the negative electrode of the secondary battery is performed by pairing the first magnetic attraction body and the second magnetic force. A charging / discharging device in which a suction body is arranged so as to have contact or a gap due to the magnetic attraction force. In the charge / discharge device according to claim 1 or 2, the first magnetic attraction is placed on the first and second charge / discharge probe sides, for each pair of the first and second charge / discharge probes, or. , A charging / discharging device characterized in that a plurality of pairs of the first and second charging / discharging probes are provided for each set divided into a plurality of sets. The charging / discharging device according to any one of claims 1 to 3, wherein both the first and second magnetic attraction bodies are magnets. In the charge / discharge device according to claim 4, the magnets on the first and second charge / discharge probe sides and the secondary battery side have S poles and N poles, respectively, along the thickness direction of the secondary battery. A charging / discharging device characterized by being arranged alternately. In the charging / discharging device according to any one of claims 1 to 3, one of the first and second magnetic attraction bodies is a magnet, and any one of the first and second magnetic attraction bodies. A charging / discharging device characterized in that the other is a magnetic material. The charging / discharging device according to claim 4 or 6, wherein the magnet is an electromagnet. The charging / discharging device according to any one of claims 4 to 6, wherein the magnet is provided with irregularities. In the charging / discharging device according to any one of claims 1 to 8, a spacer is arranged between the adjacent secondary batteries housed in the tray, and the second magnetic attraction is placed in the spacer. A charging / discharging device characterized by being provided. In the charging / discharging device according to claim 1 or 2, the first magnetic attraction is a magnet, and the second magnetic attraction is a connection portion having magnetic characteristics of the secondary battery. Charging / discharging device. In the charging / discharging device according to any one of claims 1 to 10, the first magnetic attraction body is movable along the thickness direction of the secondary battery, and the first magnetic attraction force is used. A charging / discharging device characterized in that the first and second charging / discharging probes move with respect to the positive electrode and the negative electrode of the secondary battery to perform the positioning with the movement of the magnetic attraction body.

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