JP2019087567A - Power storage module - Google Patents

Abstract

To provide a power storage module comprising a terminal cover capable of protecting terminals both when shipping the module and when using it.SOLUTION: A power storage module comprises a power storage cell, a housing, a positive electrode external terminal, a negative electrode external terminal, and a terminal cover. The power storage cell comprises a power storage element, a positive electrode terminal connected to a positive electrode of the power storage element, and a negative electrode terminal connected to a negative electrode of the power storage element. The housing houses the power storage cell. The positive electrode external terminal is provided in the housing, and electrically connected to the positive electrode terminal. The negative electrode external terminal is provided in the housing, and electrically connected to the negative electrode terminal. The terminal cover has an insulation property, is mounted on the positive electrode external terminal or the negative electrode external terminal in the housing, forms a housing space for housing the positive electrode external terminal or the negative electrode external terminal, and includes a removable plate part for separating the housing space and an external space.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a power storage module configured by a power storage cell.

  The storage module is configured by modularizing storage cells such as lithium ion capacitors (see, for example, Patent Document 1). The storage module includes a positive electrode terminal and a negative electrode terminal, and the positive electrode and the negative electrode of the storage cell are electrically connected.

  When the number of series-connected storage cells mounted in the storage module is high, a high voltage is generated. Therefore, it is necessary to prevent the occurrence of a short circuit or the like, and terminal covers are attached to the positive electrode terminal and the negative electrode terminal. In general, it is necessary to protect the terminals in two situations, when shipping the storage module and when using it.

JP, 2005-203262, A

  However, since the terminal cover mounted at the time of shipment needs to be removed when using the storage module, the terminals can not be protected. Moreover, the terminal cover attached at the time of use can not protect the terminal at the time of shipment.

  In view of the circumstances as described above, it is an object of the present invention to provide an electric storage module provided with a terminal cover which can protect terminals both at the time of shipment and at the time of use.

In order to achieve the above object, a storage module according to an aspect of the present invention includes a storage cell, a housing, a positive electrode external terminal, a negative electrode external terminal, and a terminal cover.
The storage cell includes a storage element, a positive electrode terminal connected to the positive electrode of the storage element, and a negative electrode terminal connected to the negative electrode of the storage element.
The housing accommodates the storage cell.
The positive electrode external terminal is provided in the housing and electrically connected to the positive electrode terminal.
The negative electrode external terminal is provided in the housing and electrically connected to the negative electrode terminal.
The terminal cover has an insulating property, is attached to the positive electrode external terminal or the negative electrode external terminal in the housing, and forms a housing space for housing the positive electrode external terminal or the negative electrode external terminal, It comprises a removable plate which separates the external space.

  According to this configuration, the positive electrode external terminal and the negative electrode external terminal are protected by the terminal cover when the storage module is shipped, and the plate portion of the terminal cover is removed when the storage module is in use. The positive electrode external terminal and the negative electrode external terminal can be protected by the terminal cover while being connected thereto. That is, the terminal cover can be used both at the time of shipment and at the time of use, and since it is not necessary to prepare different terminal covers for the time of shipment and at the time of use, the number of parts can be reduced and the cost can be reduced.

  The terminal cover may be configured of a main body portion surrounding the accommodation space together with the plate portion and the plate portion, and the main body portion and the plate portion may be separated except for a part by a notch.

The plate portion may include a first plate portion and a second plate portion, and the first plate portion and the second plate portion may be separated apart by a notch.
Storage module.

  The storage module may include a plurality of the plate portions.

  The terminal cover may be attached to the positive electrode external terminal and the negative electrode external terminal.

  As described above, according to the present invention, it is possible to provide an electricity storage module provided with a terminal cover capable of protecting terminals both at the time of shipment and at the time of use.

It is a perspective view of an electrical storage module concerning an embodiment of the present invention. It is a disassembled perspective view of the module with which the same electrical storage module is provided. It is a perspective view of the electrical storage cell with which the electrical storage module is equipped. It is sectional drawing of the electrical storage cell with which the electrical storage module is equipped. It is a perspective view of the same electrical storage module in the state which removed the terminal cover. It is a perspective view of the storage module in the state where wiring was connected. It is a perspective view of the terminal cover with which the storage module is provided. It is a perspective view of the terminal cover with which the storage module is provided. It is a top view of the terminal cover with which the storage module is provided. It is the top view of the state which removed the board part of the terminal cover with which the storage module is equipped. It is a perspective view of the same electrical storage module in the state which connected wiring and equipped the terminal cover. It is a top view of the terminal cover with which a board part has a plurality of board parts with which the storage module is provided. It is a perspective view of the terminal cover which has the several board part with which the same electrical storage module is provided.

  A storage module according to an embodiment of the present invention will be described.

[Configuration of storage module]
FIG. 1 is a perspective view of a power storage module 100 according to the present embodiment. In each of the following drawings, three directions orthogonal to each other are respectively defined as an X direction, a Y direction, and a Z direction.

  As shown in FIG. 1, the storage module 100 includes a housing 101 and two terminal covers 102.

  The housing 101 accommodates a module. FIG. 2 is an exploded perspective view of the module 103 housed in the housing 101. As shown in the figure, the module 103 includes a housing 110 and a storage cell 120.

  The housing 110 is configured of a frame member 111, a first plate member 112, and a second plate member 113, as shown in FIG.

  The frame member 111 is a frame-shaped member made of synthetic resin or the like. On the frame member 111, a connector electrically connected to the positive electrode terminal and the negative electrode terminal of the storage cell 120, a substrate on which the control circuit of the storage cell 120 is mounted, and the like are mounted.

  The first plate member 112 and the second plate member 113 are plate-like members made of metal such as aluminum. The first plate member 112 and the second plate member 113 sandwich the frame member 111 to form a housing space surrounded by the frame member 111, the first plate member 112, and the second plate member 113. The first plate member 112 and the second plate member 113 are fixed to the frame member 111 by screwing or the like.

  The configuration of the housing 110 is not limited to the one shown here, as long as it forms an accommodation space capable of accommodating the storage cell 120.

  The storage cell 120 is a cell that can be charged and discharged. FIG. 3 is a perspective view of the storage cell 120. As shown in FIG. FIG. 4 is a cross-sectional view of the storage cell 120, and is a cross-sectional view taken along the line AA of FIG. As shown in these drawings, the storage cell 120 includes a storage element 121, an exterior body 122, a positive electrode terminal 123, and a negative electrode terminal 124.

  As shown in FIG. 4, the storage element 121 is configured by laminating a positive electrode 125, a negative electrode 126, and a separator 127.

  The positive electrode 125 is a sheet-like member containing a positive electrode material, and can be, for example, a current collector foil laminated with the positive electrode material. The current collector foil is, for example, a porous aluminum foil, and the positive electrode material is, for example, a mixture of a positive electrode active material such as activated carbon and a binder resin and the like.

  The negative electrode 126 is a sheet-like member containing a negative electrode material, and can be, for example, a current collector foil laminated with the negative electrode material. The current collector foil is, for example, a porous copper foil, and the negative electrode material is, for example, a mixture of a negative electrode active material such as graphite and a binder resin and the like.

  The separator 127 is a sheet-like member made of a woven fabric, a non-woven fabric, a synthetic resin microporous film or the like, and insulates the positive electrode 125 from the negative electrode 126.

  The positive electrode 125 and the negative electrode 126 are stacked via a separator 127 to form a storage element 121. The number of layers of the positive electrode 125 and the negative electrode 126 is not particularly limited. The storage element 121 is accommodated in the exterior body 122 together with an optional electrolytic solution.

  The exterior body 122 seals the storage element 121. The exterior body 122 can be a laminate film in which both front and back surfaces of metal foil are coated with a synthetic resin, and the synthetic resin is heat-sealed at the periphery of the storage element 121.

  In addition, the exterior body 122 may not necessarily be a laminate film, and may be a member that can seal the storage element 121.

  The positive electrode terminal 123 is electrically connected to the positive electrode 125 and is drawn out from between the exterior body 122 to the outside. The positive electrode terminal 123 can be a metal foil or a metal plate made of aluminum or the like.

  The negative electrode terminal 124 is electrically connected to the negative electrode 126, and is drawn to the outside of the exterior body 122 from between the exterior body 122. The negative electrode terminal 124 can be a metal foil or a metal plate made of copper or the like.

  Storage cell 120 has the configuration as described above. The configuration of the storage cell 120 is not limited to that shown here, and may be a lithium ion capacitor, a lithium ion secondary battery, an electric double layer capacitor, or the like that can charge and discharge.

  The module 103 accommodates one or more storage cells 120. The positive electrode terminal 123 and the negative electrode terminal 124 of each storage cell 120 are electrically connected to the positive electrode terminal and the negative electrode terminal of the module 103 via a wire (not shown) provided in the module 103, respectively.

  The housing 101 accommodates the module 103 as described above. The number of modules 103 accommodated in the housing 101 is not particularly limited. The positive electrode terminal and the negative electrode terminal of each module 103 are electrically connected to the positive electrode external terminal and the negative electrode external terminal of the storage module 100, respectively, through a wire (not shown). Note that the storage cell 120 may not be accommodated in the module 103, and may be directly mounted on the storage module 100.

  The two terminal covers 102 protect the positive electrode external terminal and the negative electrode external terminal of the storage module 100, respectively. FIG. 5 is a perspective view showing the storage module 100 with the terminal cover 102 removed.

  As shown in the figure, the storage module 100 includes a positive electrode external terminal 131 and a negative electrode external terminal 132.

  The positive electrode external terminal 131 is provided to protrude from the housing 101 and is electrically connected to the positive electrode terminal of the module 103. The negative electrode external terminal 132 is provided to protrude from the housing 101 and is electrically connected to the negative electrode terminal of the module 103.

  When the storage module 100 is used, a wire is connected to the positive electrode external terminal 131 and the negative electrode external terminal 132. FIG. 6 is a schematic view showing a wire 150 connected to the positive electrode external terminal 131 and the negative electrode external terminal 132. As shown in FIG. As shown in the figure, the wiring 150 is connected to the positive electrode external terminal 131 and the negative electrode external terminal 132 through the connection terminal 150 a. The connection terminal 150a is, for example, a round terminal.

  As shown in FIG. 1, the terminal cover 102 is attached to the positive electrode external terminal 131 and the negative electrode external terminal 132 in the housing 101.

7 is a perspective view of the terminal cover 102, and FIG. 8 is a perspective view of the terminal cover 102 as viewed from the side opposite to that of FIG. As shown to these figures, the terminal cover 102 has the ceiling part 102a and the side wall part 102b.

  The ceiling portion 101 a is separated from the housing 101 and faces the housing 101. The side wall portion 102 b is provided between the ceiling portion 101 a and the housing 101. As shown in FIG. 7, the ceiling portion 102a may have a substantially rectangular shape, and the side wall portion 102b may have a shape extending perpendicularly to the ceiling portion 102a from the four sides of the ceiling portion 102a.

  As shown in FIG. 8, the terminal cover 102 has a housing space R formed by the ceiling portion 102 a and the side wall portion 102 b. When the terminal cover 102 is attached to the housing 101, the accommodation space R accommodates the positive electrode external terminal 131 or the negative electrode external terminal 132.

  The ceiling portion 102 a is provided with a screw hole 102 c for fixing the terminal cover 102 to the housing 101. The terminal cover 102 may be attached to the housing 101 by a method other than fixing with a screw.

  A plate 102d is provided on the side wall 102b. FIG. 9 is a plan view showing the plate portion 102d. The plate portion 102d separates the housing space R and the external space of the terminal cover 102, and can be removed.

  Specifically, when a portion other than the plate portion 102d in the terminal cover 102 is a main body portion 102e, the plate portion 102d and the main body portion 102e are separated by a notch 102f except for a part. For this reason, it is possible to remove the plate portion 102d by cutting between the notches 102f.

  FIG. 10 is a plan view showing the terminal cover 102 from which the plate portion 102d is removed. As shown in the drawing, by removing the plate portion 102d, an opening 102h communicating with the accommodation space R and the external space is formed.

  FIG. 11 is a perspective view showing the storage module 100 in use. As shown in the drawing, the wiring 150 is connected to the positive electrode external terminal 131 and the negative electrode external terminal 132 in the housing space R, and is drawn from the housing space R through the opening 102 h.

  The terminal cover 102 is configured as described above, and used when the storage module 100 is shipped without the plate portion 102d being removed (see FIG. 1) to protect the positive electrode external terminal 131 and the negative electrode external terminal 132.

  When the storage module 100 is used, the plate portion 102d is removed (see FIG. 11) to protect the positive electrode external terminal 131, the negative electrode external terminal 132, and the connection terminal 150a of the wiring 150.

  Thus, terminal cover 102 can be used both at the time of shipment and use of power storage module 100, and there is no need to prepare another terminal cover at the time of shipment and use, thus reducing the number of parts and cost. Down is possible.

  The plate portion 102d may be composed of a plurality of plate portions. FIG. 12 is a plan view of the terminal cover 102 in which the plate portion 102d is composed of a plurality of plate portions. As shown in the figure, the terminal cover 102 can have a first plate portion 102i and a second plate portion 102j. The first plate portion 102i and the second plate portion 102j are both separated by a notch 102f except for a part of the main body portion 102e. Further, the first plate portion 102i and the second plate portion 102j are also separated except for a part by the notch 102f.

  In this structure, by removing one or both of the first plate portion 102i and the second plate portion 102j, the shape of the opening 102h can be adjusted according to the shape of the wiring 150 or the like. For example, if the diameter of the wiring 150 is small, only the first plate portion 102i can be removed, and if the diameter of the wiring 150 is large, the first plate portion 102i and the second plate portion 102j can be removed.

  Further, a plurality of plate portions 102 d of the terminal cover 102 may be provided. FIG. 13 is a perspective view showing the terminal cover 102 provided with a plurality of plate parts 102 d. As shown in the figure, by providing the plate portion 102d at each position of the side wall portion 102b, selecting the plate portion 102d to be removed according to the shape of the connection terminal 150a included in the wiring 150 and the extending direction of the wiring 150. It is possible.

  In the above description, the terminal cover 102 is attached to both the positive electrode external terminal 131 and the negative electrode external terminal 132. However, the terminal cover 102 can be attached to only one of the positive electrode external terminal 131 and the negative electrode external terminal 132. It is.

DESCRIPTION OF SYMBOLS 100 ... Storage module 101 ... Casing 102 ... Terminal cover 103 ... Module 120 ... Storage cell 121 ... Storage element 122 ... Exterior body 123 ... Positive electrode terminal 124 ... Negative electrode terminal 125 ... Positive electrode 126 ... Negative electrode 127 ... Separator 131 ... Positive electrode external terminal 132 ... negative electrode external terminal 150 ... wiring

Claims (5)

A storage cell comprising a storage element, a positive electrode terminal connected to the positive electrode of the storage element, and a negative electrode terminal connected to the negative pole of the storage element;
A housing for accommodating the storage cell;
A positive external terminal provided in the housing and electrically connected to the positive terminal;
A negative external terminal provided in the housing and electrically connected to the negative terminal;
It has insulation, is attached to the said positive electrode external terminal or the said negative electrode external terminal in the said housing, The accommodation space which accommodates the said positive electrode external terminal or the said negative electrode external terminal is formed, The removal which separates the said accommodation space and external space And a terminal cover comprising a possible plate part. The storage module according to claim 1, wherein
The said terminal cover is comprised by the main-body part which encloses the said accommodation space with the said board part, and the said board part, and the said main-body part and the said board part are separated except for one part by the notch. It is an electrical storage module of Claim 2, Comprising:
The plate portion includes a first plate portion and a second plate portion, and the first plate portion and the second plate portion are separated except for a part by a notch. The storage module according to any one of claims 1 to 3,
A storage module comprising a plurality of the plate portions. It is an electrical storage module as described in any one of Claim 1 to 4, Comprising:
The terminal cover is attached to the positive electrode external terminal and the negative electrode external terminal.

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