JP6098105B2 - Storage structure for electricity storage devices - Google Patents

Description

  The present invention relates to a transport structure for an electricity storage device such as a lithium ion battery.

  Energy storage devices such as lithium-ion batteries have high energy density, and some use flammable electrolytes. Conventionally, depending on the means of transportation, such as air transportation, sea transportation, land transportation, etc., as dangerous goods Regulations have been made. For example, when an electricity storage device is transported by land in Japan, it is necessary to satisfy the standards defined by the Fire Service Act. Therefore, conventionally, in order to safely transport the power storage device, a transport structure (packaging container or the like) of the power storage device has been developed (for example, Patent Documents 1 and 2).

JP 2004-071427 A JP 2002-075308 A

  However, the conventional power storage device transport structure is complicated in structure, and it may be difficult to store the power storage device. In particular, the electricity storage device has a terminal portion, and if an external force is applied to the terminal during transportation, the electricity storage device may be damaged, and thus it is necessary to appropriately protect the terminal portion.

  In addition, the conventional storage structure for an electricity storage device has an external force such as vibration applied to the electricity storage device when the electricity storage device is a stacked type in which a group of electrode plates in which a positive electrode plate and a negative electrode plate are laminated via a separator. As a result, the electrode plate group of the electricity storage device may be damaged or a shift may occur in the electrode plate group.

  An object of the present invention is to provide a storage structure for an electricity storage device that is easy to store the electricity storage device and that can appropriately protect a terminal portion.

  Another object of the present invention is to provide a structure for transporting an electricity storage device that is not easily affected by external forces when transporting a stacked electricity storage device.

  The present invention comprises a container body for transporting a hazardous material having a peripheral wall having an opening at one end and a bottom wall facing the opening and a lid member for sealing the opening, and a plurality of terminal portions (positive electrode). The present invention is directed to an electricity storage device transport structure including an electricity storage device having a terminal portion and a negative electrode terminal portion) and housed in a container, and a holding structure for holding the electricity storage device in the container. In the present invention, in order to provide a transport structure suitable for an electricity storage device, the holding structure is configured to prevent the plurality of terminal portions from coming into contact with the container and to prevent external force from being applied to the plurality of terminal portions. By comprising in this way, it can prevent that a terminal part is damaged. Moreover, since it does not contact a container, even if a container is metal, it does not short-circuit, but an electrical storage device can be transported safely.

  Although the configuration of the holding structure of the power storage device is arbitrary, for example, the first buffer material and the lid member disposed between the bottom wall portion of the container body and the power storage device and the power storage device are disposed. It can comprise from a 2nd buffer material. If comprised in this way, an electrical storage device can be easily accommodated by pinching an electrical storage device with the 1st and 2nd buffer material.

  When the terminal portion is provided on at least one of the pair of opposed end portions of the power storage device, the first and second cushioning materials are formed with fitting recesses into which the pair of end portions are fitted. . The fitting recess has a shape that prevents the terminal portion from coming into contact with the container and accommodates the terminal portion so that an external force is not applied to the plurality of terminal portions. By comprising in this way, a terminal part can be easily protected by the 1st and 2nd buffer material.

  In the present invention, a cap made of an electrically insulating material covering the plurality of terminal portions may be further provided. In this way, the terminal portion can be protected more easily. In addition, when a plurality of terminal portions exist only at one end of the electricity storage device, one cap that covers all the terminal portions may be provided, and the positive terminal portion and the negative terminal portion may be provided. Of course, in the case of being arranged separately at both ends of the power storage device, a plurality of caps covering the respective terminal portions may be provided.

  The electricity storage device housed in the electricity storage device transport structure of the present invention may be any type of electricity storage device. For example, an electrode plate group in which a positive electrode plate and a negative electrode plate are laminated via a separator is a battery container body. A laminated type in which a pair of terminal parts are fixed to the battery container lid or a state in which the electrode plate group is wound and stored in the battery container, and the pair of terminal parts is fixed to the battery container lid Any of a winding type may be used. According to the knowledge of the inventors, in the case of land transportation by truck or the like, the winding type electricity storage device has the electrode plate spirally wound, so that the electricity storage device can be transported in any direction. Little influence from external force. On the other hand, the laminated power storage device is relatively strong against an external force in the stacking direction of the electrode plate group, but relatively weak to an external force acting in a direction perpendicular to the stacking direction of the electrode plate group. It has been found that the tabs of the electrode plate group connected to the part may be damaged, or a shift may occur in the electrode plate group. Therefore, when the storage structure of the electricity storage device of the present invention is applied to a laminated electricity storage device (particularly, a laminated lithium ion battery), the stacking direction of the electrode plate group and the traveling direction of the truck to be transported are easily determined. A mark indicating the stacking direction of the electrode plate group of the stacked power storage device is displayed on the outer surface of the container body so that the stacking direction of the electrode plate group coincides with the direction indicated by the mark. Store in a container. This makes it easier to align the traveling direction of the transport vehicle and the stacking direction of the electrode plate group, and the tabs of the electrode plate group are damaged by external forces such as vibration when transporting the stacked power storage device. It is possible to prevent displacement of the electrode plates within the electrode plate group.

  Of course, only the mark indicating the stacking direction of the electrode plate group may be used. On the outer surface of the container body, in addition to the mark, the container is transported in a state where the stacking direction is matched with the traveling direction of the transport vehicle using the mark. It is also good to display a note that calls for loading. If it does in this way, it can alert to the worker who loads, and it becomes possible to transport an electrical storage device more safely.

  The container body may have any shape, but if it has a bottomed cylindrical shape such as a pail can, the stored electricity storage device can be appropriately protected from external impacts. In the case where a cylindrical body with a bottom is used as the container body, if the mark indicating the stacking direction of the electrode plate group is displayed on the lid member, the loading operator will not overlook the mark.

It is a disassembled perspective view of the electrical storage device transport structure of the present embodiment. It is sectional drawing of the transport structure of the electrical storage device of this Embodiment of the state which accommodated the electrical storage device. It is a top view which shows the state which fitted the 2nd shock absorbing material to the electrical storage device. It is a top view of the transport structure of the electrical storage device of this Embodiment.

  Hereinafter, an example of an embodiment of a transport structure for an electricity storage device of the present invention will be described with reference to the drawings.

FIG. 1 is an exploded perspective view of a power storage device transport structure 1 according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view showing an internal structure of the power storage device transport structure 1 in a state where the power storage device is housed . 4 is a sectional view taken along line II-II) shown in FIG. 3 is a plan view showing a state in which fitted the second buffer material, which will be described later in the power storage device. In FIG. 3, the hidden part is indicated by a dotted line for convenience of explanation.

  As shown in FIGS. 1 and 2, a power storage device transport structure 1 according to the present embodiment includes a lithium ion battery 3 that is a power storage device, a container 5 for transporting dangerous goods, and a lithium ion battery inside the container 5. 3 and a holding structure 7 that holds 3.

  In the present embodiment, a stacked lithium ion battery 3 is taken as an example of an electricity storage device to be stored. In this lithium ion battery 3, an electrode plate group in which a positive electrode plate and a negative electrode plate are laminated via a separator is housed in a metal battery container body 9, and a pair of a positive electrode terminal portion 11 and a negative electrode terminal portion 13 is provided. The terminal portion has a structure fixed to the battery container lid 15. The stacking direction of the electrode plate group of the lithium ion battery 3 is a direction orthogonal to the direction in which the positive electrode terminal portion 11 and the negative electrode terminal portion 13 are arranged (the direction of arrow A shown in FIG. 1). In this Embodiment, the direction where the positive electrode terminal part 11 and the negative electrode terminal part 13 of the lithium ion battery 3 are located in a line is a longitudinal direction, and an orthogonal direction is a transversal direction. In FIG. 1, caps described later are attached to the terminal portions. In FIG. 2, the internal structure of the lithium ion battery 3 is not shown.

  The container 5 is a so-called pail can which is a kind of drum can, and includes a container body 17 and a lid member 19. The container body 17 has a circular bottom wall portion 21 and a cylindrical peripheral wall portion 23 rising from the peripheral edge portion of the bottom wall portion 21, and an end portion of the peripheral wall portion 23 on the side facing the bottom wall portion 21. Has an opening 25. A lid engaging portion 27 with which the circular lid member 19 engages is formed in the opening 25 along the end portion. After the lithium ion battery 3 and the holding structure 7 are accommodated in the container body 17, the outer periphery of the lid member 19 is tightened with the container body 17 with the fastening band 29 in a state where the lid member 19 is engaged with the lid engaging portion 27. Tighten and seal the container 5. Moreover, the two handle attachment parts 30 are provided in the outer side of the container main body 17, and the both ends of the handle 31 are attached to the two handle attachment parts 30 so that rotation is possible. Note that the handle 31 is not shown in FIG.

  The holding structure 7 includes a first buffer material 33 and a second buffer material 35. The first buffer material 33 and the second buffer material 35 are made of a known buffer material such as polystyrene foam. In the present invention, the material of the cushioning material is not particularly limited. The first buffer material 33 is disposed between the bottom wall portion 21 of the container body 17 and the bottom surface of the lithium ion battery 3, and the second buffer material 35 includes the lid member 19 and the terminal portion of the lithium ion battery 3. The lithium ion battery 3 is sandwiched between the first buffer material 33 and the second buffer material 35, which is disposed between the battery container lid 15 provided.

  The first buffer material 33 has a hole 33 </ b> A in which one end of the lithium ion battery 3 is in close contact with the central portion and is opposed to the peripheral wall portion 23 of the container body 17 with a very small gap. A disk-shaped disk portion 37 to be formed, and an elongated plate-shaped support portion that closes a part of one opening portion of the hole 33A of the disk portion 37 and contacts the bottom portion of the lithium ion battery 3 and the bottom wall portion 21 of the container body 17. 39. A fitting recess 41 for fitting the lithium ion battery 3 is formed by the hole 33 </ b> A formed in the disk part 37 and the support part 39.

  The second cushioning material 35 has a hole 35A that is accommodated in a state where the other end of the lithium ion battery 3 is in close contact with the central portion, and is opposed to the peripheral wall 23 of the container body 17 with a very small gap. An elongated plate-like support that closes a part of one opening of the disc-shaped disc portion 43 and the hole 35A of the disc portion 43 and contacts a part of the battery container lid 15 and the lid member 19 of the lithium ion battery 3 The unit 45 is configured. The support portion 45 is provided with a storage recess 47 for storing the cap 51 so as not to interfere with the positive electrode terminal portion 11 and the negative electrode terminal portion 13 to which the cap 51 is attached. A fitting recess 49 for fitting the lithium ion battery 3 is formed by the hole 35A formed in the disk portion 43 and the support portion 45 (see FIGS. 2 and 3).

Cap 51 is insulated electrically insulating material such as resin is formed by, more nuts 12 and 14 tightened screwed to the positive electrode terminal part 11 and the negative electrode terminal part 13 are tightly fitted.

  Furthermore, in the present embodiment, the tabs of the electrode plate group connected to the terminal portions of the stacked lithium ion battery 3 are damaged or the position of the electrode plate in the electrode plate group during land transportation by the vehicle. In order to prevent the deviation from occurring, a device is provided that makes it possible to easily match the stacking direction of the electrode plate group and the traveling direction of a vehicle such as a truck to be transported. FIG. 4 is a plan view of the transport structure 1 according to the present embodiment. As shown in FIG. 4, a mark (arrow) 53 indicating the traveling direction of the vehicle during transportation by the vehicle is displayed on the lid member 19 as a mark indicating the stacking direction of the electrode plate group. A cautionary note that prompts the container 5 to be loaded on the vehicle is displayed so that the mark 53 coincides with the traveling direction of the vehicle. Therefore, the lithium ion battery 3 is disposed in the container body 17 so that the direction of the mark 53 and the stacking direction of the electrode plate group of the stacked lithium ion battery 3 housed in the container 5 coincide. A lid member 19 is attached to the container body 17 in an appropriate positional relationship. When the container 5 is loaded on the vehicle so that the mark 53 of the container 5 containing the lithium ion battery faces the traveling direction of the vehicle, the electrode plate is attached to the electrode plate group of the stacked lithium ion battery 3 when transported by the vehicle. It is difficult to apply external force to shift

  In the present embodiment, the lithium ion battery 3 is housed in the container 5 according to the following procedure in order to make the mark 53 indicating the traveling direction of the vehicle during transportation coincide with the stacking direction of the electrode plate group. First, the direction in which the virtual straight line IL connecting the two handle attachment portions 30 of the handle 31 extends is defined as the traveling direction of the vehicle during transportation (stacking direction of the electrode plate group), and the short direction of the fitting recess 41 is the virtual straight line IL. The first cushioning material 33 is accommodated in the container body 17 so as to be in the same direction. Then, the lithium ion battery 3 is accommodated in the fitting recess 41, and then the second buffer material 35 is fitted onto the lithium ion battery 3. Finally, the container body 17 is closed with the lid member 19 in a state in which the mark 53 and the virtual straight line IL are in the same direction, and sealed with the fastening band 29. In this way, it is possible to easily match the mark indicating the traveling direction of the vehicle during transportation with the stacking direction of the electrode plate group. In addition, the notice on the lid member 19 can alert the loading operator about the direction when loading the container 5 including the transport structure 1 of the present invention.

  In the above embodiment, caps are attached to the positive electrode terminal portion 11 and the negative electrode terminal portion 13, but the cap is not necessarily required if the storage recess 47 is provided. Moreover, although the cap was attached to each of the positive electrode terminal part 11 and the negative electrode terminal part 13, the fitting type cap which covers both the positive electrode terminal part 11 and the negative electrode terminal part 13 simultaneously may be used.

  Further, in the above embodiment, an arrow is used as a mark indicating the traveling direction of the vehicle during transportation. However, this mark may be any mark as long as it indicates the traveling direction of the vehicle during transportation. The words “front” and “rear” indicating “” may be displayed on the lid member 19 as marks. Of course, the vehicle icon may be displayed as a mark on the lid member 19 to indicate the traveling direction of the vehicle during transportation.

  Furthermore, in the present embodiment, the storage device to be housed is a stacked-type prismatic lithium ion battery. However, the winding type storage device can be changed by changing the shape of the recesses for fitting the first and second buffer materials. Can be transported. In addition, the type of power storage device is arbitrary, and any other type of battery such as a nickel battery, or a capacitor such as an electric double layer capacitor or a lithium ion capacitor can be used as long as the power storage device is regarded as dangerous by laws and regulations. Also good.

  In the present embodiment, the positive electrode terminal portion 11 and the negative electrode terminal portion 13 are fixed to one end portion of the electricity storage device, but the positive electrode terminal portion is fixed to one end portion and the other end portion is fixed to the other end portion. You may make it accommodate the electrical storage device of the type to which the negative electrode terminal part is fixed in a container. In that case, a storage recess for storing the terminal portion may be provided in the support portion 39 of the first cushioning material.

According to the present invention, the storage device is fixed by the fitting recesses provided in the first and second shock absorbers, and the terminal portion is fixed by the first and second shock absorbers while being easily stored. It is possible to prevent contact with the container so that an external force is not applied to the terminal portion. In addition, if the positive electrode terminal portion and the negative electrode terminal portion are covered with a cap made of an insulating material, the occurrence of a short circuit can be reliably prevented even during the storing operation and the taking out operation. Furthermore, since the mark indicating the stacking direction of the electrode plate group is displayed on the container, the electrode plate group can be made less susceptible to the influence of external force applied when the stacked power storage device is transported. Therefore, according to this invention, the transport structure which can transport an electrical storage device safely can be provided.

1 Transport Structure 3 Lithium Ion Battery 5 Dangerous Goods Transport Container (Pail Can)
7 Holding structure 9 Battery device body 11 Positive terminal portion 12 Tightening nut 13 Negative electrode terminal portion 14 Tightening nut 15 Battery container lid 17 Container body 19 Lid member 21 Bottom wall portion 23 Peripheral wall portion 25 Opening portion 27 Lid engaging portion 29 Tightening Attached band 30 Handle attaching portion 31 Handle 33 First buffer material 33A Hole 35 Second buffer material 35A Hole 37 Disk portion 39 Support portion 41 Recess for fitting 43 Disk portion 45 Support portion 47 Recess for storage 49 Recess for fitting 51 Cap 53 mark

Claims (4)

A container for transporting dangerous goods having a peripheral wall having an opening at one end, a container main body having a bottom wall facing the opening, and a lid member for sealing the opening;
An electricity storage device composed of a stacked lithium ion battery in which an electrode plate group in which a positive electrode plate and a negative electrode plate are laminated via a separator is housed in a metal battery container body and has a plurality of terminal portions;
A storage structure for an electricity storage device comprising a holding structure for holding the electricity storage device in the container,
The holding structure includes a first buffer material disposed between the bottom wall portion of the container body and the power storage device, and a second buffer material disposed between the lid member and the power storage device. It is composed including
The plurality of terminal portions are provided on at least one of a pair of opposed end portions of the power storage device,
The first and second cushioning materials are formed with fitting recesses into which the pair of ends are fitted,
The recessed portion for fitting has a shape that prevents the terminal portion from contacting the container and houses the terminal portion so that an external force is not applied to the plurality of terminal portions,
On the outer surface of the container main body, a mark indicating the stacking direction of the electrode plate group of the stacked lithium ion battery is displayed,
The electrode plate group is a transport structure for an electricity storage device housed in the container so that the stacking direction coincides with the direction indicated by the mark.   The power storage device transport structure according to claim 1, further comprising a cap made of an electrically insulating material that covers the plurality of terminal portions.   On the outer surface of the container main body, a cautionary note for urging the user to load the container on the transport vehicle in a state where the stacking direction coincides with the traveling direction of the transport vehicle using the mark is displayed. Item 2. A structure for transporting an electricity storage device according to Item 1. The said container main body is a bottomed cylindrical shape, The said mark is displayed on the said cover member, The transport structure of the electrical storage device of Claim 1 or 3 .

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