JP6772875B2 - Power storage device - Google Patents

Description

The present invention relates to a power storage element and a power storage device including a conductive member electrically connected to the power storage element.

Conventionally, a power storage device in which a plurality of power storage elements are housed in an exterior body is known. A large number of members other than the power storage element are built in the exterior body, and these members are individually locked (see, for example, Patent Document 1). For example, the conductive member electrically connected to the power storage element may be connected to the power storage element via a holding member arranged on the power storage element. By connecting the power storage element and the conductive member, the conductive member is also positioned with respect to the holding member.

JP 2015-82406

By the way, before the conductive member is connected to the power storage element, the conductive member may float with respect to the holding member, and the conductive member may be damaged or misaligned. Further, there is a demand for simplifying the connection work between the conductive member and the power storage element.

An object of the present invention is to simplify the connection work between the conductive member and the power storage element while suppressing damage and misalignment of the conductive member.

In order to achieve the above object, the power storage device according to one aspect of the present invention includes a power storage element, a conductive member electrically connected to the power storage element, and a holding member on which the conductive member is arranged. The holding member has a temporary holding mechanism that temporarily holds the conductive member before being electrically connected to the power storage element at a position where the holding member overlaps the conductive member when viewed from a predetermined direction.

According to this, since the temporary holding mechanism temporarily holds the conductive member before the connection, the connection work can be performed while the conductive member is temporarily held. In particular, since the temporary holding mechanism temporarily holds the conductive member before connection at a position where it overlaps with the conductive member when viewed from a predetermined direction, the conductive member is in a connected state simply by releasing the temporary holding. It will be placed in the position (final connection position). Therefore, the connection work to the conductive member can be easily performed.

Further, even if the holding member is moved at the time of assembly, since the conductive member is temporarily held, it is possible to prevent the conductive member from being damaged or displaced.

Further, the temporary holding mechanism may temporarily hold the conductive member by separating the conductive member and the power storage element.

According to this, while the conductive member is temporarily held by the temporary holding mechanism, the conductive member and the power storage element are separated from each other, so that both can be electrically disconnected during the temporary holding. .. Therefore, it is possible to suppress an assembly failure such as an inadvertent short circuit during temporary holding.

Further, the temporary holding mechanism may have a grip portion that grips the periphery of the conductive member before connection.

Since the gripping portion grips and temporarily holds the periphery of the conductive member before connection, the conductive member can be temporarily held with a simple structure.

Further, the grip portion has elasticity, and the diameter of the portion corresponding to the periphery of the conductive member may be expanded.

According to this, since the grip portion has elasticity and the diameter of the portion corresponding to the periphery of the conductive member can be increased, the conductive member can be easily attached to the grip portion.

Further, the grip portion may have a support portion that supports the conductive member from below during temporary holding.

According to this, since the supporting portion supports the conductive member from below during temporary holding, it is possible to prevent the conductive member from falling off during temporary holding.

Further, the support portion may have an inclined surface that inclines inward toward the lower side.

According to this, since the support portion is provided with an inclined surface inclined inward toward the lower side, the conductive member can be smoothly guided to the final installation position along the inclined surface.

Further, the gripping portion may have a facing portion facing the conductive member at the time of temporary holding from above.

According to this, since the facing portion faces the conductive member from above, even if the conductive member during temporary holding tries to float from the support portion, the facing portion restricts the lifting of the conductive member further. Can be done. As a result, it is possible to prevent the conductive member from falling off from the grip portion during temporary holding.

Further, the conductive member may be temporarily held by the grip portion so as to be rotatable in the circumferential direction around the connection portion of the conductive member.

According to this, since the conductive member is temporarily held so as to be rotatable in the circumferential direction around the connection portion, the conductive member can be rotated in the circumferential direction even during the temporary holding. Therefore, the position of the conductive member in the circumferential direction can be adjusted without shifting the connection portion of the conductive member.

Further, it has a bus bar holding portion for holding the bus bar and a screw hole formed in one of the power storage element, the holding member and the bus bar holding portion, and the conductive member is penetrated by a screw screwed into the screw hole. A penetrating portion is formed, and the grip portion grips the conductive member when the conductive member approaches the power storage element by tightening a screw into the screw hole through the penetrating portion of the conductive member temporarily held by the grip portion. It may have a structure for releasing.

According to this, by tightening the screw into the screw hole through the penetrating portion of the conductive member, the gripping portion releases the grip on the conductive member, so that the conductive member is fastened by the screw and the temporary holding is released at the same time. be able to. Therefore, the connection work can be simplified.

Further, a gap is provided below the grip portion, and when the conductive member passes through the grip portion and moves to the gap, the grip by the grip portion may be released.

According to this, when the conductive member passes through the grip portion and moves to the gap, the grip by the grip portion is released, so that the interference between the grip portion and the conductive member can be suppressed after the release.

Further, the conductive member may be a measurement terminal for measuring the state of the power storage element.

According to this, since the conductive member is the measurement terminal, the measurement terminal before connection can be temporarily held, and the connection work to the measurement terminal can be easily performed.

A method for manufacturing a power storage device according to one aspect of the present invention is a method for manufacturing a power storage device including a power storage element, a conductive member electrically connected to the power storage element, and a holding member on which the conductive member is arranged. By bringing the conductive member closer to the power storage element while temporarily holding the conductive member before being electrically connected to the power storage element at a position where it overlaps the conductive member when viewed from a predetermined direction. After releasing the temporary holding, the conductive member is electrically connected to the power storage element.

According to this, the same operation and effect as the above-mentioned power storage device can be obtained.

According to the power storage device of the present invention, it is possible to simplify the connection work between the conductive member and the power storage element while suppressing damage and misalignment of the conductive member.

It is a perspective view which shows the appearance of the power storage device which concerns on embodiment. It is an exploded perspective view which shows each component when the power storage device which concerns on embodiment is disassembled. It is an exploded perspective view which shows each component when the power storage unit which concerns on embodiment is disassembled. It is a perspective view which shows the schematic structure of the holding member which concerns on embodiment. It is a perspective view which shows the holding member which concerns on embodiment, and wiring. It is a top view which shows the temporary holding state of the 1st temporary holding mechanism which concerns on embodiment. FIG. 6 is a cross-sectional view of the first temporary holding mechanism seen from the cut surface of VII-VII in FIG. FIG. 6 is a cross-sectional view of the first temporary holding mechanism as seen from the VIII-VIII cut surface in FIG. It is a top view which shows the connection state of the 1st temporary holding mechanism which concerns on embodiment. 9 is a cross-sectional view of the first temporary holding mechanism seen from the XX cut surface in FIG. 9. 9 is a cross-sectional view of the first temporary holding mechanism seen from the cut surface of XI-XI in FIG. It is a top view which shows typically the 2nd temporary holding mechanism and the 3rd temporary holding mechanism which concerns on embodiment. It is a top view which shows the state which the terminal which concerns on embodiment is connected to a bus bar. It is a top view which shows the installation area of the 1st exterior body which concerns on embodiment. It is a top view which shows the state of the installation area when the 1st exterior body is attached to the 2nd exterior body which concerns on embodiment of this invention. It is a top view which shows the state which installed the connector in the installation area which concerns on embodiment. It is a top view which shows the temporary holding state of the 1st temporary holding mechanism which concerns on modification 1. FIG. It is sectional drawing of the first temporary holding mechanism seen from the cut plane of XVIII-XVIII in FIG. FIG. 17 is a cross-sectional view of the first temporary holding mechanism as seen from the XIX-XIX cut surface in FIG. It is a top view which shows the state which the terminal which concerns on modification 2 is temporarily held by the first temporary holding mechanism.

Hereinafter, the power storage device according to the embodiment of the present invention will be described with reference to the drawings. In addition, all the embodiments described below show a preferable specific example of the present invention. Numerical values, shapes, materials, components, arrangement positions of components, connection forms, etc. shown in the following embodiments are examples, and are not intended to limit the present invention. Further, among the components in the following embodiments, the components not described in the independent claims indicating the highest level concept are described as arbitrary components. Moreover, in each figure, the dimensions and the like are not exactly illustrated.

(Embodiment)
First, the configuration of the power storage device 1 will be described.

FIG. 1 is a perspective view showing the appearance of the power storage device 1 according to the embodiment of the present invention. Further, FIG. 2 is an exploded perspective view showing each component when the power storage device 1 according to the embodiment of the present invention is disassembled.

In these figures, the Z-axis direction is shown as the vertical direction, and the Z-axis direction will be described below as the vertical direction. However, depending on the usage mode, the Z-axis direction may not be the vertical direction. The axial direction is not limited to the vertical direction. The same applies to the following figures.

The power storage device 1 is a device capable of charging electricity from the outside and discharging electricity to the outside. For example, the power storage device 1 is a battery module used for power storage and power supply. In particular, in the present embodiment, the power storage device 1 is preferably used as a battery for starting an engine of a moving body such as an automobile, a motorcycle, a watercraft, a snowmobile, an agricultural machine, or a construction machine. In this case, the power storage device 1 is installed in an exposed state in a place that can be easily touched, such as in the hood or trunk of the moving body, for facilitating maintenance or replacement work, for example. Further, the power storage device 1 can supply power to an external load by itself (single unit), or can be charged by itself (single unit) from an external power source. That is, there is a configuration in which a plurality of battery modules (power storage devices) are connected as a power source for power of an electric vehicle or a plug-in hybrid electric vehicle and housed in a case to form a battery pack, but the power storage device 1 in the present embodiment is , It is different from such a configuration. It should be noted that a plurality of power storage devices 1 may be electrically connected to form a battery pack according to an external load or an external power source.

As shown in FIGS. 1 and 2, the power storage device 1 includes an exterior body 10 composed of a first exterior body 11 and a second exterior body 12, and a power storage unit 20 and a holding member housed inside the exterior body 10. It is equipped with 30 and bus bars 41, 42 and the like.

The exterior body 10 is a rectangular (box-shaped) container (module case) that constitutes the exterior body of the power storage device 1, and is in a substantially sealed state (semi-sealed state) in which only a part thereof can communicate with the outside. Used in. That is, the exterior body 10 is arranged outside the power storage unit 20, the holding member 30, and the bus bars 41 and 42, and the power storage unit 20 and the like are arranged at predetermined positions to protect the power storage unit 20 and the like from impacts and the like. The exterior body 10 is made of an insulating resin material such as polycarbonate (PC), polypropylene (PP), polyethylene (PE), polyphenylene sulfide resin (PPS), polybutylene terephthalate (PBT), or ABS resin. There is. As a result, the exterior body 10 prevents the power storage unit 20 and the like from coming into contact with an external metal member or the like.

Here, the exterior body 10 has a first exterior body 11 that constitutes the lid of the exterior body 10 and a second exterior body 12 that constitutes the main body of the exterior body 10. The first exterior body 11 is a flat rectangular cover member that closes the opening of the second exterior body 12, and is provided with a positive electrode external terminal 13 and a negative electrode external terminal 14. The first exterior body 11 has a wiring 80 (see FIG. 6 and the like) for connecting electric devices such as a circuit board (not shown) and a relay (not shown), and the power storage element 100 in the power storage unit 20. A wiring 82 (see FIG. 12 and the like) for connecting the circuit board and the bus bars 41 and 42, and a connector 590 are arranged.

Here, on the circuit board, for example, various information such as the charging state, the discharging state, the voltage value, the current value, and the temperature of the power storage element 100 is acquired, monitored, and controlled, and the on / off of the relay is controlled. A control circuit is provided for communication with other devices.

Further, the connector 590 is a communication connector capable of communicating with an external device, such as a LIN connector. One end of the connector 590 is exposed from the first exterior body 11 so that it can be connected to an external device. The first exterior body 11 is provided with an installation area 111 in which the connector 590 is installed. The first exterior body 11 is detachably provided with a closing portion 112 that closes the installation area 111 with one end of the connector 590 exposed. The specific configuration of the installation area 111 will be described later.

Based on the control by this control circuit, the power storage device 1 charges electricity from the outside and discharges electricity to the outside via the positive electrode external terminal 13 and the negative electrode external terminal 14.

The second exterior body 12 is a bottomed rectangular tubular housing having an opening, and houses the power storage unit 20, the holding member 30, the bus bars 41, 42, and the like.

The first exterior body 11 and the second exterior body 12 may be formed of members of the same material, or may be formed of members of different materials.

The power storage unit 20 has a plurality of power storage elements 100 (12 power storage elements 100 in the present embodiment) and a plurality of bus bars 200, and has a positive electrode external terminal 13 provided on the first exterior body 11. It is electrically connected to the negative electrode external terminal 14. That is, the positive electrode terminal of any one of the plurality of power storage elements 100 is electrically connected to the positive electrode external terminal 13 via the bus bar 200. Further, the negative electrode terminal of any one of the plurality of power storage elements 100 is electrically connected to the negative electrode external terminal 14 via the bus bar 200.

Wiring 80 (see FIGS. 5 and 8) is electrically connected to each bus bar 200. Various information of each power storage element 100 is transmitted to the control circuit via the bus bar 200 and the wiring 80. As a result, the state of the power storage element 100 can be measured by the control circuit.

Further, the power storage unit 20 is arranged in the second exterior body 12 with the plurality of power storage elements 100 arranged vertically in the X-axis direction. Then, the power storage unit 20 is covered with the first exterior body 11 from above and is housed inside the exterior body 10. A detailed description of the configuration of the power storage unit 20 will be described later.

The holding member 30 is a member that holds the bus bars 41 and 42, can insulate the bus bars 41 and 42 from other members, and can regulate the positions of the bus bars 41 and 42. In particular, the holding member 30 positions the bus bars 41 and 42 with respect to the bus bar 200, the positive electrode external terminal 13 and the negative electrode external terminal 14 in the power storage unit 20.

Specifically, the holding member 30 is placed above the power storage unit 20 (plus side in the Z-axis direction) and is positioned with respect to the power storage unit 20. Further, the bus bars 41 and 42 are placed and positioned on the holding member 30. Further, the first exterior body 11 is arranged on the holding member 30. As a result, the bus bars 41 and 42 are positioned with respect to the bus bar 200 in the power storage unit 20 and the positive electrode external terminals 13 and the negative electrode external terminals 14 provided on the first exterior body 11.

The holding member 30 also has a function of holding the wirings 80 and 82. That is, the holding member 30 positions the wirings 80 and 82 by holding the wirings 80 and 82 connected to the bus bar 200.

The holding member 30 is made of an insulating resin material such as PC, PP, PE, PPS, PBT or ABS resin, but any material is used as long as it is an insulating member. It doesn't matter. The specific configuration of the holding member 30 will be described later.

The bus bars 41 and 42 electrically connect the bus bar 200 in the power storage unit 20 to the positive electrode external terminal 13 and the negative electrode external terminal 14 provided on the first exterior body 11. That is, the bus bar 41 is a conductive member that electrically connects the bus bar 200 arranged at one end in the electricity storage unit 20 and the positive electrode external terminal 13, and the bus bar 42 is arranged at the other end in the electricity storage unit 20. It is a conductive member that electrically connects the bus bar 200 and the negative electrode external terminal 14. Wiring 82 (see FIG. 12) for the battery management system (BMS) is electrically connected to the bus bars 41 and 42.

The bus bars 41 and 42 are made of, for example, copper as a conductive member, but the materials of the bus bars 41 and 42 are not particularly limited. Further, the bus bars 41 and 42 may be formed of members of the same material, or may be formed of members of different materials.

Next, the configuration of the power storage unit 20 will be described in detail.

FIG. 3 is an exploded perspective view showing each component when the power storage unit 20 according to the embodiment of the present invention is disassembled.

As shown in the figure, the power storage unit 20 includes a plurality of power storage elements 100, a plurality of bus bars 200, and a spacer unit 300 (a plurality of spacers 310, a pair of first subspacers 320, and a pair of second subspacers 321). A pair of holding members 400, a plurality of restraining members 500, a bus bar frame 600, and a heat shield plate 700 are provided.

The power storage element 100 is a secondary battery (cell battery) capable of charging electricity and discharging electricity, and more specifically, a non-aqueous electrolyte secondary battery such as a lithium ion secondary battery. .. The power storage element 100 has a flat rectangular shape and is arranged adjacent to the spacer 310. That is, each of the plurality of power storage elements 100 is alternately arranged with each of the plurality of spacers 310, and is arranged in the X-axis direction. In this embodiment, 12 power storage elements 100 are alternately arranged adjacent to 11 spacers 310. The power storage element 100 is not limited to the non-aqueous electrolyte secondary battery, and may be a secondary battery other than the non-aqueous electrolyte secondary battery, or may be a capacitor.

Further, as shown in the figure, the power storage element 100 includes a container 110, a positive electrode terminal 120, and a negative electrode terminal 130. An electrode body and a current collector (positive electrode current collector and negative electrode current collector), which are power storage elements (power generation elements), are arranged inside the container 110, and an electrolytic solution (non-aqueous electrolyte) and the like are arranged. Although the liquid is enclosed, detailed description thereof will be omitted.

The container 110 is composed of a housing body having a rectangular tubular shape made of metal and having a bottom, and a metal lid portion that closes the opening of the housing body. Further, the container 110 can be sealed inside by accommodating the electrode body or the like inside and then welding the lid portion and the housing body or the like. As described above, the container 110 is a rectangular parallelepiped having a lid on the positive side in the Z-axis direction, long side surfaces on both side surfaces in the X-axis direction, short side surfaces on both side surfaces in the Y-axis direction, and a bottom surface on the negative side in the Z-axis direction. It is a container of shape. That is, the X-axis direction is the lateral direction of the power storage element 100, and the Y-axis direction is the longitudinal direction of the power storage element 100. Hereinafter, the X-axis direction may be referred to as the lateral direction, and the Y-axis direction may be referred to as the longitudinal direction. The material of the container 110 is not particularly limited, but is preferably a weldable metal such as stainless steel, aluminum, or an aluminum alloy.

The positive electrode terminal 120 is an electrode terminal electrically connected to the positive electrode of the electrode body via the positive electrode current collector, and the negative electrode terminal 130 is electrically connected to the negative electrode of the electrode body via the negative electrode current collector. These are connected electrode terminals, both of which are attached to the lid of the container 110. That is, the positive electrode terminal 120 and the negative electrode terminal 130 lead out the electricity stored in the electrode body to the external space of the power storage element 100, and also introduce electricity into the internal space of the power storage element 100 in order to store electricity in the electrode body. It is a metal electrode terminal for this purpose. In the present embodiment, the power storage element 100 is arranged with the positive electrode terminal 120 and the negative electrode terminal 130 facing upward.

The bus bar 200 is a bus bar that is electrically connected to each of the plurality of power storage elements 100 in the power storage unit 20. That is, the bus bar 200 is a conductive member that is electrically connected to each electrode terminal of the plurality of power storage elements 100, and any of the electrode terminals of the plurality of power storage elements 100 are electrically connected to each other. To do. Specifically, the bus bar 200 is arranged on the surface of each electrode terminal of the plurality of power storage elements 100, and is connected (bonded) to the electrode terminal.

In the present embodiment, five bus bars 200 are arranged, and the twelve power storage elements 100 consist of four sets of three power storage elements 100 connected in parallel by the five bus bars 200. It is configured to be connected in series. Further, the bus bar 200 arranged at the end is connected to the above-mentioned bus bars 41 and 42, thereby being electrically connected to the positive electrode external terminal 13 and the negative electrode external terminal 14.

The bus bar 200 is made of, for example, aluminum as a conductive member, but the material of the bus bar 200 is not particularly limited. Further, the bus bars 200 may be all made of the same material, or any of the bus bars may be made of different materials.

The spacer unit 300 has a plurality of spacers 310, a pair of first subspacers 320, and a pair of second subspacers 321. For example, insulation of PC, PP, PE, PPS, PBT, ABS resin, or the like. It is made of sex resin. The spacer 310, the first sub-spacer 320, and the second sub-spacer 321 may be made of any material as long as they have an insulating property, and all of them are made of the same material. Either spacer may be made of a member made of a different material.

The spacer 310 is a plate-shaped member that is arranged on the side (plus side or minus side in the X-axis direction) of the power storage element 100 and insulates the power storage element 100 from other members. That is, the spacer 310 is arranged between two adjacent power storage elements 100, and insulates the two power storage elements 100 from each other. In the present embodiment, 11 spacers 310 are arranged between the power storage elements 100 of the 12 power storage elements 100.

Further, the spacer 310 is formed so as to cover substantially half of the front side or the back side of the power storage element 100 (about half when divided into two in the X-axis direction). That is, recesses are formed on both the front side or the back side (both sides in the X-axis direction) of the spacer 310, and substantially half of the power storage element 100 is inserted into the recesses. With such a configuration, the spacer 310 on the side of the power storage element 100 covers most of the part of the power storage element 100. Therefore, the spacer 310 provides insulation between the power storage element 100 and other conductive members. Can be improved.

The first sub-spacer 320 is a plate-shaped member that is arranged between the sandwiching member 400 and the exterior body 10, which will be described later, and insulates between the sandwiching member 400 and the exterior body 10. Further, the first sub-spacer 320 also has a function as a buffer member that protects the power storage unit 20 when an impact is applied to the exterior body 10 from the outside. That is, a pair of first sub-spacers 320 are arranged between the pair of sandwiching members 400 and the exterior body 10 so as to sandwich the pair of sandwiching members 400 from both sides, and the power storage element 100 and the like in the power storage unit 20 and the like. Insulates and protects from external impact.

The second subspacer 321 is a plate-shaped member that is arranged on the outermost side of the plurality of power storage elements 100 in the X-axis direction and insulates the plurality of power storage elements 100 from other members. Specifically, since the outer surface of the pair of power storage elements 100 located on the outermost side of the plurality of power storage elements 100 is not covered by the spacer 310, the pair of second subspacers 321 can be used. It covers the outer surface of the power storage element 100. As a result, the pair of second subspacers 321 are arranged between the plurality of power storage elements 100 and the sandwiching member 400, and insulate the plurality of power storage elements 100 and the sandwiching member 400.

The sandwiching member 400 and the restraint member 500 are members that press the power storage element 100 from the outside in the stacking direction of the electrode bodies of the power storage element 100. That is, the sandwiching member 400 and the restraining member 500 sandwich the plurality of power storage elements 100 from both sides in the stacking direction, thereby pressing the power storage elements 100 included in the plurality of power storage elements 100 from both sides. The stacking direction of the electrode body of the power storage element 100 is the direction in which the positive electrode, the negative electrode and the separator of the electrode body are laminated, and is the same direction as the arrangement direction (X-axis direction) of the plurality of power storage elements 100. That is, the plurality of power storage elements 100 are arranged in the stacking direction.

Specifically, the sandwiching member 400 is a flat plate-shaped member (end plate) arranged on both sides in the X-axis direction of the plurality of power storage elements 100, the plurality of power storage elements 100, the plurality of spacers 310, and a pair of second subs. The spacer 321 is sandwiched and held from both sides in the arrangement direction (X-axis direction) of the plurality of power storage elements 100, the plurality of spacers 310, and the pair of second sub spacers 321. From the viewpoint of strength, the holding member 400 is formed of, for example, a metal (conductive) member such as steel or stainless steel, but is not limited to this, and is formed of, for example, a high-strength insulating member. It may have been done.

The restraint member 500 is a long and flat plate-shaped member (restraint bar) whose both ends are attached to the sandwiching member 400 and restrain the plurality of power storage elements 100. That is, the restraint member 500 is arranged so as to straddle the plurality of power storage elements 100, the plurality of spacers 310, and the pair of second sub spacers 321 and the plurality of power storage elements 100, the plurality of spacers 310, and the pair of second sub spacers. A binding force is applied to the spacer 321 in these arrangement directions (X-axis direction).

In the present embodiment, two restraint members 500 are arranged on both sides (both sides in the Y-axis direction) of the plurality of power storage elements 100, and the two restraint members 500 allow the plurality of power storage elements 100 from both sides. It is pinched and restrained. The restraint member 500 is preferably formed of a metal member such as steel or stainless steel, as in the case of the holding member 400, but may be formed of a member other than metal.

The bus bar frame 600 is a bus bar holding portion that holds the bus bar 200. The bus bar frame 600 is a member capable of insulating the bus bar 200 from other members and restricting the position of the bus bar 200. In particular, the bus bar frame 600 positions the bus bar 200 with respect to the plurality of power storage elements 100 in the power storage unit 20.

Specifically, the bus bar frame 600 is placed above the plurality of power storage elements 100 (plus side in the Z-axis direction) and is positioned with respect to the plurality of power storage elements 100. Further, the bus bar 200 is placed and positioned on the bus bar frame 600. As a result, the bus bar 200 is positioned with respect to the plurality of power storage elements 100, and is joined to the respective electrode terminals of the plurality of power storage elements 100. The bus bar frame 600 is made of an insulating resin material such as PC, PP, PE, PPS, PBT or ABS resin, but is made of any material as long as it is an insulating member. It doesn't matter.

The heat shield plate 700 is a plate-shaped member having a heat insulating property, which is arranged inside the exhaust flow path of the gas discharge valve of the power storage element 100. Specifically, the heat shield plate 700 is arranged above the bus bar frame 600 so as to be located above the gas discharge valve of the power storage element 100. That is, the heat shield plate 700 protects electrical equipment such as a circuit board arranged above the power storage unit 20 from the heat of the gas when gas is discharged from the gas discharge valve of the power storage element 100 in an abnormal situation or the like. To do. In the present embodiment, the heat shield plate 700 is made of a metal material such as stainless steel having low thermal conductivity, but the present invention is not limited to this, and any material having high heat resistance and low thermal conductivity can be used. Often, it may be formed of, for example, a resin such as PPS or PBT reinforced with glass fiber, or a ceramic or the like.

Next, the holding member 30 will be described in detail.

FIG. 4 is an exploded perspective view showing a schematic configuration of the holding member 30 according to the embodiment of the present invention. FIG. 5 is a perspective view showing the holding member 30 and the wiring 80 according to the embodiment.

As shown in FIGS. 4 and 5, the holding member 30 includes a first temporary holding mechanism 800 that temporarily holds the terminal 801 of the wiring 80, and a second temporary holding mechanism 850 that temporarily holds the terminal 821 of the wiring 82. A third temporary holding mechanism 860 for temporarily holding the connector 590 is provided. The number of first temporary holding mechanisms 800 is provided according to the number of wirings 80 to be temporarily held. The second temporary holding mechanism 850 and the third temporary holding mechanism 860 are also provided in a number corresponding to the number of temporary holding objects installed.

FIG. 4 illustrates a case where three temporary holding mechanisms 800, one second temporary holding mechanism 850, and one third temporary holding mechanism 860 are provided. All three first temporary holding mechanisms 800 have basically the same configuration.

The first temporary holding mechanism 800 will be described. First, a state in which the first temporary holding mechanism 800 temporarily holds the terminal 801 of the wiring 80 (temporary holding state) will be described.

FIG. 6 is a top view showing a temporary holding state of the first temporary holding mechanism 800 according to the embodiment of the present invention. FIG. 7 is a cross-sectional view of the first temporary holding mechanism 800 as seen from the cut surface of VII-VII in FIG. FIG. 8 is a cross-sectional view of the first temporary holding mechanism 800 as seen from the VIII-VIII cut surface in FIG.

Here, the terminal 801 is connected to the tip of the wiring 80 as a conductive member. The terminal 801 has a round tongue portion 802 and a circular penetrating portion 803 formed in the tongue portion 802. The terminal may have a Y-shaped tongue portion. In this case, the penetrating portion is opened in a U shape.

As described above, the wiring 80 transmits various information of the power storage element 100 to the control circuit, whereby the control circuit can measure the state of the power storage element 100. That is, the terminal 801 is a measurement terminal for measuring the state of the power storage element 100.

The first temporary holding mechanism 800 includes a grip portion 810 that grips the terminal 801 of the wiring 80 during temporary holding, a regulating portion 840 that regulates the floating of the wiring 80, and a rectangular opening 870 that exposes a part of the bus bar 200. And have. A part of the bus bar 200 is a connected portion 210 to which the terminal 801 is connected. A through hole 211 is formed in the connected portion 210. A screw hole 660 is formed in a portion of the bus bar frame 600 facing the through hole 211. The screw hole 660 is a screw hole for connecting the terminal 801 to the connected portion 210 of the bus bar 200 and fixing the screw.

The grip portion 810 is arranged with a gap S1 with respect to the connected portion 210 of the bus bar 200. The grip portion 810 includes a pair of grip beams 811 and 812. The pair of gripping beams 811 and 812 are hung over the opening 870 in a state of being arranged to face each other with a predetermined interval. Each of the pair of gripping beams 811 and 812 has a support portion 813, a first connecting portion 814, and a second connecting portion 815. The support portion 813 is an arc-shaped portion that is convex outward, and supports the terminal 801 from below. The support portion 813 is formed with an inclined surface 816 that inclines downward. The inclined surface 816 is an inner peripheral edge of the support portion 813 and is formed over the entire length of the inner peripheral edge.

The first connecting portion 814 is a portion that extends linearly from one end of the supporting portion 813 and is connected to the inner peripheral surface forming the opening 870. The second connecting portion 815 is a portion that extends linearly from the other end of the supporting portion 813 and is connected to the inner peripheral surface forming the opening 870. The first connecting portions 814 of the pair of gripping beams 811 and 812 are arranged in parallel. The second connecting portions 815 of the pair of gripping beams 811 and 812 are arranged so that the distance between them becomes wider as the distance between them increases from the support portion 813.

The diameters of the support portions 813 (the portions corresponding to the periphery of the terminal 801) of the pair of gripping beams 811 and 812 can be expanded. Specifically, the support portions 813 of the pair of gripping beams 811 and 812 are formed to be slightly smaller than the outer diameter of the tongue portion 802 of the terminal 801 in the state before gripping the terminal 801. Since the pair of gripping beams 811 and 812 have elasticity as a whole, when the tongue portion 802 of the terminal 801 is inserted between the pair of supporting portions 813, the entire gripping beams 811 and 812 are elastically deformed. And spread out to grip the tongue portion 802. During gripping (temporarily holding), as shown in FIG. 7, by gripping the terminal 801 above the inclined surface 816 of the pair of gripping beams 811 and 812, the terminal 801 falls off during the temporary holding. Can be suppressed. Further, at the time of temporary holding, since the terminal 801 is gripped by the restoring force of the gripping beams 811 and 812, the terminal 801 is temporarily held so as to be rotatable in the circumferential direction. The terminal 801 may be held so as to be rotatable in the circumferential direction around the connection point of the terminal 801. Examples of the center of the connection portion include the center of the through hole 211 of the connected portion 210. In any case, since the terminal 801 can be rotated in the circumferential direction, the terminal 801 can be rotated in the circumferential direction even during temporary holding. Therefore, the position of the terminal 801 in the circumferential direction can be adjusted without shifting the connection point of the terminal 801.

As shown in FIGS. 6 and 8, the regulation unit 840 includes a pair of regulation pieces 841 and 842 arranged above the wiring 80. The pair of restricting pieces 841 and 842 are trapezoidal plates and are arranged at intervals from each other. The wiring 80 can be arranged at a predetermined position of the holding member 30 via the space between the pair of regulation pieces 841 and 842. After the arrangement, the regulation pieces 841 and 842 are present above the wiring 80, so even if the wiring 80 floats, the regulation pieces 841 and 842 prevent further floating.

Next, a state (connection state) in which the temporary holding by the first temporary holding mechanism 800 is released and the terminal 801 is connected to the bus bar 200 will be described.

FIG. 9 is a top view showing a connected state of the first temporary holding mechanism 800 according to the embodiment of the present invention. FIG. 10 is a cross-sectional view of the first temporary holding mechanism 800 as seen from the XX cut surface in FIG. FIG. 11 is a cross-sectional view of the first temporary holding mechanism 800 as seen from the XI-XI cut surface in FIG.

In order to connect the terminal 801 in the temporarily held state to the connected portion 210 of the bus bar 200, the screw 670 is passed through the through portion 803 of the terminal 801 and the through hole 211 of the connected portion 210, and then the bus bar frame 600 is used. Screw into the screw hole 660. When tightening the screw 670 into the screw hole 660, the screw head 671 of the screw 670 pushes down the terminal 801. The terminal 801 approaches the bus bar 200 and the power storage element 100 while descending along the inclined surface 816 of the grip portion 810. As a result, the grip portion 810 is pushed open by the terminal 801 and retracts from the traveling path of the terminal 801. After that, when the screw 670 is further tightened, the terminal 801 passes through the grip portion 810 and the temporary holding is released. After the temporary holding is released, the grip portion 810 elastically returns to its original shape. Further, the terminal 801 is arranged in the gap S1 between the grip portion 810 and the connected portion 210, and is screwed and connected to the connected portion 210.

As a result, the terminal 801 is electrically connected to the connected portion 210 of the bus bar 200. Here, the terminal 801 in the temporarily held state and the terminal 801 in the connected state are arranged at overlapping positions when viewed from a predetermined direction (specifically, the traveling direction of the screw 670). That is, the first temporary holding mechanism 800 temporarily holds the terminal 801 before connection at a position where it overlaps the terminal 801 in the connected state when viewed from a predetermined direction. As a result, the terminal 801 is arranged at the position (final connection position) in which the terminal 801 is in the connected state only by releasing the temporary holding. Therefore, the connection work to the terminal 801 can be easily performed.

Next, the second temporary holding mechanism 850 and the third temporary holding mechanism 860 according to the embodiment of the present invention will be described.

FIG. 12 is a top view schematically showing the second temporary holding mechanism 850 and the third temporary holding mechanism 860 according to the embodiment of the present invention.

FIG. 12 shows a temporary holding state of the second temporary holding mechanism 850 and the third temporary holding mechanism 860.

Here, the terminal 821 is connected to the tip of the wiring 82. The terminal 821 has a round tongue portion 822 and a circular penetrating portion 823 formed on the tongue portion 822.

The second temporary holding mechanism 850 has a pair of claw portions 851. The pair of claw portions 851 are erected from the upper surface of the holding member 30 at predetermined intervals. The pair of claws 851 temporarily holds the terminal 821 by being inserted into the penetrating portion 823 of the terminal 821, and is separated from the penetrating portion 823 by narrowing the distance between the pair of claws 851 to release the temporary holding. To do. The pair of claws 851 temporarily holds the terminals 821 of the two wirings 82.

A part of the bus bar 42 is arranged in the vicinity of the second temporary holding mechanism 850 in the holding member 30. A through hole 421 is formed in a part of the bus bar 42. A bus bar 200 is arranged below the bus bar 42, and a screw hole (not shown) is formed in a portion of the bus bar 200 facing the through hole 421. This screw hole is a screw hole for connecting the terminal 821 to the bus bars 42 and 200 and fixing the screw.

The third temporary holding mechanism 860 includes a pedestal portion 861 on which the connector 590 is mounted, and a pair of claw portions 862 for temporarily fixing the connector 590 mounted on the pedestal portion 861. The pedestal portion 861 is provided so as to project from the upper surface of the holding member 30. The upper surface of the pedestal portion 861 has a concave shape corresponding to the bottom surface shape of the connector 590 so that the connector 590 can be stably supported. The pair of claw portions 862 are erected from the upper surface of the holding member 30 at predetermined intervals. When the connector 590 is inserted between the pair of claws 862, the pair of claws 862 are elastically deformed to grip the connector 590. As a result, the connector 590 is temporarily held. When the operator pulls out the connector 590 from between the pair of claws 862, the pair of claws 862 is elastically deformed and the temporary holding of the connector 590 is released.

Although not shown, a wiring electrically connected to the control circuit is attached to the base end portion of the connector 590. As a result, the external device connected to the connector 590 and the control circuit can be freely communicated via wiring.

FIG. 13 is a top view showing a state in which the terminal 821 according to the embodiment of the present invention is connected to the bus bar 42. Specifically, FIG. 13 is a diagram corresponding to FIG. 12.

As shown in FIG. 13, when connecting the terminal 821 to the bus bar 42, first, the terminal 821 is removed from the pair of claws 851 of the second temporary holding mechanism 850, and then the penetrating portion 823 of the terminal 821 and the bus bar. Align with the through hole 421 of 42. After that, the operator inserts a screw such as a hexagon bolt 888 into the through hole 421 and the through portion 823, and then screwes the screw into the screw hole of the bus bar 200. As a result, the terminal 821 is fixed to the bus bar 42 and electrically connected.

FIG. 14 is a top view showing an installation area 111 of the first exterior body 11 according to the embodiment of the present invention. FIG. 15 is a top view showing a state of the installation area 111 when the first exterior body 11 is attached to the second exterior body 12 according to the embodiment of the present invention.

The installation area 111 is an area in which the connector 590 is installed after the first exterior body 11 is attached to the second exterior body 12. Specifically, the installation area 111 is a part of the upper surface of the first exterior body 11, and is an area facing a part of the second temporary holding mechanism 850 and the bus bar 42 (a part to which the terminal 821 is connected). .. The installation area 111 includes a pedestal portion 1111 on which the connector 590 is mounted, and a pair of claw portions 1112 for locking the connector 590 mounted on the pedestal portion 1111. The pedestal portion 1111 is provided so as to project from the installation area 111. The upper surface of the pedestal portion 1111 has a concave shape corresponding to the bottom surface shape of the connector 590 so that the connector 590 can be stably supported. The pair of claw portions 1112 are erected from the installation area 111 at predetermined intervals. By inserting the connector 590 between the pair of claws 1112, the pair of claws 862 are elastically deformed to grip the connector 590 and fix the position.

Further, an opening 1119 for exposing the third temporary holding mechanism 860 is formed in the vicinity of the installation area 111 in the first exterior body 11. The opening 1119 exposes the connector 590 temporarily held by the third temporary holding mechanism 860. That is, even if the first exterior body 11 is attached to the second exterior body 12, the connector 590 in the temporarily held state is exposed from the first exterior body 11 (see FIG. 15).

FIG. 16 is a top view showing a state in which the connector 590 is installed in the installation area 111 according to the embodiment of the present invention. When the operator pulls out the connector 590 exposed from the opening 1119 of the first exterior body 11 from between the pair of claws 862, the pair of claws 862 are elastically deformed and the temporary holding of the connector 590 is released. .. After that, the operator inserts the connector 590 between the pair of claw portions 1112 on the installation area 111 and places it on the pedestal portion 1111 to achieve the state shown in FIG. Then, as shown in FIG. 1, when the closing portion 112 is attached to the first exterior body 11, one end of the connector 590 is exposed.

Next, a method of manufacturing the power storage device 1 according to the embodiment of the present invention will be described.

First, the operator temporarily causes the first temporary holding mechanism 800 of the holding member 30 to temporarily hold the terminal 801 of the wiring 80, causes the second temporary holding mechanism 850 to temporarily hold the terminal 821 of the wiring 82, and causes the third temporary holding mechanism 860 to temporarily hold the terminal 821. Temporarily holds the connector 590. In this state, the operator assembles the holding member 30, the power storage unit 20, and the bus bars 41 and 42, and accommodates them in the first exterior body 11.

After that, the operator releases the temporary holding of the first temporary holding mechanism 800 and the second temporary holding mechanism 850.

Specifically, in the first temporary holding mechanism 800, as shown in FIGS. 6 to 8, the terminal 801 in the temporary holding state is viewed from the traveling direction of the screw 670 with respect to the terminal 801 in the connected state. It is placed in an overlapping position. The operator penetrates the screw 670 through the through hole 803 of the terminal 801 and the through hole 211 of the connected portion 210 in that state, and then screws the screw into the screw hole 660 of the bus bar frame 600. As a result, the terminal 801 advances in the direction approaching the power storage element 100, and the grip portion 810 is temporarily expanded. After that, the operator further tightens the screw 670 to pass the terminal 801 through the grip portion 810 and release the temporary holding. After the temporary holding is released, the grip portion 810 elastically returns to its original shape. Further, the terminal 801 is arranged in the gap S1 between the grip portion 810 and the connected portion 210, and is screwed and connected to the connected portion 210. As a result, the connection states shown in FIGS. 9 to 11 are obtained.

Next, in the second temporary holding mechanism 850, the operator releases the temporary holding by separating the terminal 821 from the pair of claws 851 by narrowing the distance between the pair of claws 851 shown in FIG. After that, the operator inserts the hexagon bolt 888 into the through hole 421 and the through portion 823, and then screwes it into the screw hole of the bus bar 200. As a result, as shown in FIG. 13, the terminal 821 is fixed to the bus bar 42 and electrically connected.

After that, the operator attaches the first exterior body 11 to the second exterior body 12 to bring it into the state shown in FIG. Then, the operator releases the temporary holding of the third temporary holding mechanism 860. Specifically, the operator detaches the connector 590 from the pair of claws 862 by widening the distance between the pair of claws 862 through the opening 1119, and then removes the connector 590 from the opening 1119. Take out to the outside of the exterior body 11. After that, the operator inserts the connector 590 between the pair of claw portions 1112 in the installation area 111 of the first exterior body 11 and places the connector 590 on the pedestal portion 1111 to achieve the state shown in FIG. .. Then, when the closing portion 112 is attached to the first exterior body 11, the state shown in FIG. 1 in which one end of the connector 590 is exposed is obtained.

As described above, according to the power storage device 1 according to the embodiment of the present invention, since the first temporary holding mechanism 800 temporarily holds the terminal 801 before the connection, the terminal 801 is temporarily held and connected. Can work. In particular, since the first temporary holding mechanism 800 temporarily holds the terminal 801 before connection at a position where it overlaps the terminal 801 when viewed from a predetermined direction, the terminal 801 can be moved by simply releasing the temporary holding. It will be placed at the position where it will be connected (final connection position). Therefore, the connection work to the terminal 801 can be easily performed.

Further, even if the holding member 30 is moved during assembly, since the terminal 801 is temporarily held, the wiring 80 having the terminal 801 may be entangled with another member, or the wiring 80 may be damaged (broken). It is also possible to suppress misalignment.

Further, since the terminal 801 and the power storage element 100 are separated from each other while the terminal 801 is temporarily held by the first temporary holding mechanism 800, the two may be electrically disconnected during the temporary holding. it can. Therefore, it is possible to suppress an assembly failure such as an inadvertent short circuit during temporary holding.

Further, since the grip portion 810 grips and temporarily holds the periphery of the terminal 801 before connection, the terminal 801 can be temporarily held with a simple structure.

Further, since the grip portion 810 has elasticity and the diameter of the portion corresponding to the periphery of the terminal 801 can be increased, the terminal 801 can be easily attached to the grip portion 810.

Further, since the support portion 813 supports the conductive member from below during temporary holding, it is possible to prevent the terminal 801 from falling off during temporary holding.

Further, since the support portion 813 is provided with the inclined surface 816 inclined inward toward the lower side, the terminal 801 can be smoothly guided to the final installation position along the inclined surface 816.

Further, since the terminal 801 is temporarily held so as to be rotatable in the circumferential direction around the connection portion, the terminal 801 can be rotated in the circumferential direction even during the temporary holding. Therefore, the position of the terminal 801 in the circumferential direction can be adjusted without shifting the connection point of the terminal 801.

Further, by tightening the screw 670 into the screw hole 660 via the through portion 803 of the terminal 801, the grip portion 810 releases the grip on the terminal 801. Therefore, the terminal 801 is fastened by the screw 670 and the temporary holding is released. Can be done at the same time. Therefore, the connection work can be simplified.

Further, when the terminal 801 passes through the grip portion 810 and moves to the gap S1, the grip by the grip portion 810 is released, so that interference between the grip portion 810 and the terminal 801 can be suppressed after the release.

Further, since the terminal 801 is a measurement terminal, the measurement terminal before connection can be temporarily held, and the connection work to the measurement terminal can be easily performed.

Further, since the second temporary holding mechanism 850 also temporarily holds the terminal 821 of the wiring 82, even if the holding member 30 is moved at the time of assembly, the wiring 82 having the terminal 821 may be entangled with other members. It is also possible to prevent the wiring 80 from being damaged (broken) or misaligned.

Further, since the connector 590 is temporarily held by the third temporary holding mechanism 860, it is possible to prevent the wiring having the connector 590 from being entangled or damaged (broken).

Although the power storage device according to the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment. That is, it should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and it is intended that all modifications within the meaning and scope equivalent to the scope of claims are included.

For example, in the above embodiment, the case where the screw hole 660 for fixing the terminal 801 is provided in the bus bar frame 600 has been illustrated and described. However, the screw hole for fixing the terminal 801 may be provided in the bus bar 200 or the power storage element 100 as long as the terminal 801 and the power storage element 100 can be screwed while being electrically connected.

Further, the first temporary holding mechanism 800 and the second temporary holding mechanism 850 may be configured to temporarily hold the conductive members other than the terminals 801 and 821. Further, the third temporary holding mechanism 860 may be configured to temporarily hold a member other than the connector 590, such as a harness.

[Modification 1]
Here, when the wiring 80 is twisted, it is assumed that the terminal 801 temporarily held by the first temporary holding mechanism 800 is also twisted and falls off from the grip portion 810. As a countermeasure, in addition to the support portion that supports the terminal 801 from below during temporary holding, the grip portion 810 may be provided with an opposing portion that faces the terminal 801 during temporary holding from above.

Hereinafter, as a modification 1, the grip portion 810A having the facing portion 830 will be described. In the following description, in the same parts as those in the above embodiment, the same reference numerals may be given and the description thereof may be omitted.

FIG. 17 is a top view showing a temporary holding state of the first temporary holding mechanism according to the first modification. FIG. 18 is a cross-sectional view of the first temporary holding mechanism as seen from the XVIII-XVIII cut surface in FIG. FIG. 19 is a cross-sectional view of the first temporary holding mechanism as seen from the XIX-XIX cut surface in FIG.

In the grip portion 810A according to the first modification, as shown in FIGS. 17 to 19, facing portions 830 are formed on the inner peripheral surfaces of the support portions 813a of the pair of grip beams 811a and 812a. The facing portion 830 is a protrusion protruding inward, and is arranged above the inclined surface 816 of the support portion 813a. That is, the facing portion 830 overlaps the terminal 801 at the time of temporary holding on the opposite side of the supporting portion 813a. In this way, in addition to the support portion 813a that supports the terminal 801 from below during temporary holding, the grip portion 810 is provided with an opposing portion 830 that faces the terminal 801 during temporary holding from above. Further, as shown in FIG. 18, the facing portion 830 is formed with an inclined surface 831 that inclines downward inward. When the terminal 801 is temporarily held by the grip portion 810A, if the terminal 801 is set on the inclined surface 831 and pushed downward, the terminal 801 is guided along the inclined surface 831 while expanding the grip portion 810A. It descends and gets over the facing portion 830. As a result, the terminal 801 is arranged between the facing portion 830 and the inclined surface 816, and is in a temporary holding state. In the temporary holding state, the facing portion 830 and the terminal 801 may be in contact with each other or separated from each other.

At this time, due to the twist of the wiring 80, a force in the twisting direction (see arrows Y1 and Y2 in FIG. 18) may act on the terminal 81 to cause the terminal 801 to oscillate, but the facing portion 830 is the terminal 801. It comes into contact with the upper surface of the terminal 801 and restricts the floating of the terminal 801 beyond that. As a result, it is possible to prevent the terminal 801 that is temporarily held from falling off from the grip portion 810A.

Then, as shown in FIGS. 18 and 19, a notch 899 is formed in the support portion 813a at a position corresponding to the facing portion 830. The presence of this notch 899 facilitates die cutting when the holding member 30 is manufactured.

Here, a case where two opposing portions 830 are provided for one grip portion 810A is illustrated. However, the number of facing portions 830 may be any number.

Further, here, an example is illustrated in which the facing portion 830 is formed so as to face a part of the inclined surface 816 of the supporting portion 813a. However, the facing portion 830 may be formed so as to face the entire inclined surface 816 of the supporting portion 813a. In this case, the inclined surface 816 of the support portion 813a and the facing portion 830 form a groove on the inner peripheral surface of the support portion 813a as a whole.

[Modification 2]
In the above embodiment, the terminal 801 having the round tongue portion 802 is exemplified as the conductive member. However, the shape of the tongue portion 802 may be arbitrary.

FIG. 20 is a top view showing a state in which the terminal 801B according to the second modification is temporarily held by the first temporary holding mechanism. As shown in FIG. 20, the tongue portion 802b of the terminal 801B according to the second modification is formed in a substantially circular shape having protrusions 804 at both ends. In this case, in the support portion 813a, only the pair of protrusions 804 of the tongue portion 802b are supported by the inclined surface 816. Further, the facing portion 830 is provided at a position corresponding to the protrusion 804. Even in this case, the floating at the terminal 801B can be suppressed by the facing portion 830.

In addition, each component provided in the said embodiment and modification may be arbitrarily combined.

The present invention can be applied to a power storage device including a power storage element and an exterior body.

1 Power storage device 10 Exterior body 11 First exterior body 12 Second exterior body 13 Positive electrode external terminal 14 Negative electrode external terminal 20 Power storage unit 30 Holding members 41, 42, 200 Busbar 80, 82 Wiring 100 Power storage element 110 Container 111 Installation area 112 Blocked Part 120 Positive electrode terminal 130 Negative electrode terminal 210 Connected part 211, 421 Through hole 300 Spacer unit 310 Spacer 320 First sub spacer 321 Second sub spacer 400 Holding member 500 Restraint member 590 Connector 600 Busbar frame 660 Screw hole 670 Screw 671 Screw head 700 Heat shield plate 800 First temporary holding mechanism 801, 801B, 821 Terminal 802, 822 Tongue part 803, 823 Penetration part 804 Protrusion 810, 810A Grip part 811, 812, 811a, 812a Grip beam 813, 813a Support part 814 First Connecting part 815 Second connecting part 816, 831 Inclined surface 830 Opposing part 840 Restricting part 841, 842 Restricting piece 850 Second temporary holding mechanism 851, 862, 1112 Claw part 860 Third temporary holding mechanism 861, 1111 Pedestal part 870 Opening 888 Hexagon bolt 899 Notch 1119 Opening S1 Gap

Claims (16)

Power storage element and
A conductive member electrically connected to the power storage element and
A holding member on which the conductive member is arranged is provided.
The holding member temporarily holds the conductive member before being electrically connected to the power storage element at a position where it overlaps the conductive member when viewed from a predetermined direction so as to be movable toward the power storage element. A power storage device having a holding mechanism. The power storage device according to claim 1, wherein the temporary holding mechanism temporarily holds the conductive member by separating the conductive member from the power storage element or a bus bar connected to the power storage element . The power storage device according to claim 1 or 2, wherein the temporary holding mechanism has a grip portion that grips the periphery of the conductive member before connection. The power storage device according to claim 3, wherein the grip portion has elasticity, and a portion corresponding to the periphery of the conductive member can be expanded in diameter. The power storage device according to claim 3 or 4, wherein the grip portion has a support portion that supports the conductive member from below during temporary holding. The power storage device according to claim 5, wherein the support portion has an inclined surface that inclines downward. The power storage device according to claim 5 or 6, wherein the grip portion has a portion facing the conductive member from above when temporarily held. The power storage device according to any one of claims 3 to 7, wherein the conductive member is temporarily held by the grip portion so as to be rotatable in the circumferential direction around a connection portion of the conductive member. Furthermore, the bus bar holding part that holds the bus bar and
It has a screw hole formed in one of the power storage element, the holding member, and the bus bar holding portion.
The conductive member is formed with a penetrating portion through which a screw screwed into the screw hole penetrates.
When the conductive member approaches the power storage element by tightening the screw into the screw hole via the through portion of the conductive member temporarily held by the grip portion, the grip portion grips the conductive member. The power storage device according to any one of claims 3 to 8, which has a structure for releasing the above. A gap is provided below the grip portion.
The power storage device according to claim 9, wherein when the conductive member passes through the grip portion and moves to the gap, the grip by the grip portion is released. The power storage device according to any one of claims 1 to 10, wherein the conductive member is a measurement terminal for measuring the state of the power storage element. Power storage element and
A conductive member electrically connected to the power storage element and
A holding member on which the conductive member is arranged is provided.
The holding member has a temporary holding mechanism that temporarily holds the conductive member before being electrically connected to the power storage element at a position that overlaps the conductive member when viewed from a predetermined direction.
The temporary holding mechanism has a grip portion that grips the periphery of the conductive member before connection.
The grip portion has elasticity, and the diameter of the portion corresponding to the periphery of the conductive member can be expanded.
Power storage device. Power storage element and
A conductive member electrically connected to the power storage element and
A holding member on which the conductive member is arranged is provided.
The holding member has a temporary holding mechanism that temporarily holds the conductive member before being electrically connected to the power storage element at a position that overlaps the conductive member when viewed from a predetermined direction.
The temporary holding mechanism has a grip portion that grips the periphery of the conductive member before connection.
The grip portion has a support portion that supports the conductive member from below during temporary holding.
Power storage device. Power storage element and
A conductive member electrically connected to the power storage element and
A holding member on which the conductive member is arranged is provided.
The holding member has a temporary holding mechanism that temporarily holds the conductive member before being electrically connected to the power storage element at a position that overlaps the conductive member when viewed from a predetermined direction.
The temporary holding mechanism has a grip portion that grips the periphery of the conductive member before connection.
The conductive member is temporarily held by the grip portion so as to be rotatable in the circumferential direction around the connection portion of the conductive member.
Power storage element. Power storage element and
A conductive member electrically connected to the power storage element and
The holding member on which the conductive member is arranged and
The bus bar holding part that holds the bus bar and
It has a power storage element, a holding member, and a screw hole formed in one of the bus bar holding portions.
The holding member has a temporary holding mechanism that temporarily holds the conductive member before being electrically connected to the power storage element at a position that overlaps the conductive member when viewed from a predetermined direction.
The temporary holding mechanism has a grip portion that grips the periphery of the conductive member before connection.
The conductive member is formed with a penetrating portion through which a screw screwed into the screw hole penetrates.
When the conductive member approaches the power storage element by tightening the screw into the screw hole via the penetrating portion of the conductive member temporarily held by the grip portion, the grip portion grips the conductive member. Has a structure to release
Power storage device. A method for manufacturing a power storage device including a power storage element, a conductive member electrically connected to the power storage element, and a holding member on which the conductive member is arranged.
In a state where the conductive member is temporarily held before being electrically connected to the power storage element at a position where it overlaps the conductive member when viewed from a predetermined direction.
A method for manufacturing a power storage device, in which the conductive member is brought close to the power storage element to release the temporary holding, and then the conductive member is electrically connected to the power storage element.

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