JP7797555B2 - Battery - Google Patents

Description

The present invention relates to a battery.

In recent years, research and development into secondary batteries that contribute to energy efficiency has been conducted to ensure that more people have access to affordable, reliable, sustainable and advanced energy.
As a technology related to such secondary batteries, Patent Document 1 describes a technology for fixing a signal collection harness that collects signals for monitoring the temperature and voltage of a cell to a battery pack. In Patent Document 1, a support plate is provided below the collection wires of the signal collection harness that are routed above the cell explosion-proof valve, a protective cover that bundles the collection wires is fixed to this support plate, and the support plate is attached to the battery pack, thereby achieving fixed mounting of the signal collection harness to the battery pack.

Chinese Utility Model No. 217848253

However, in technologies related to secondary batteries, the position of the cell surface may differ for each cell due to the influence of cell mounting tolerances, etc. Therefore, the technology described in Patent Document 1 has issues such as the possibility that the support plate may not be sufficiently fixed onto the battery pack made up of the cells, or that the signal collection harness may bend, causing a load to be applied to part of the signal collection harness.
The present invention has been made in view of the above circumstances, and aims to provide a battery in which wiring members are fixed in a state in which the load is suppressed, thereby contributing to energy efficiency.

A first aspect of the battery comprises a plurality of cells arranged adjacent to each other, and a wiring member electrically connected to the cells and through which signals related to information about the cells are conducted, wherein the wiring member is arranged in a direction in which the cells are adjacent to each other with a gap between them, and has a base comprising an insertion portion inserted between the cells and arranged so as to be slidable in the insertion direction, which is the height direction of the cells , relative to the cells, and a support portion supported by the insertion portion and supporting the wiring member.
A second aspect of the battery is a battery comprising a plurality of cells arranged adjacent to each other and wiring members electrically connected to the cells and through which signals related to information about the cells are conducted, wherein the wiring members are arranged in the direction in which the cells are adjacent to each other with a gap between them, and have a base including an insertion portion inserted between the cells and arranged so as to be slidable relative to the cells, and a support portion supported by the insertion portion to support the wiring members, and the wiring members have a main body portion arranged in the direction in which the cells are adjacent to each other, and a plurality of extension portions extending from the main body portion toward the cells and connected to bus bars connected to electrodes of the cells or to the cells, and the length of the base in the insertion direction is longer than the distance between the bus bars or the cells and the connection portions of the extension portions with the main body portion when the extension portions sandwiching the base are fully extended as viewed in a direction intersecting the insertion direction.

This makes it possible to provide a battery in which the wiring members are fixed while the load is suppressed, thereby contributing to improved energy efficiency.

FIG. 2 is a perspective view of a battery unit according to an embodiment. FIG. 2 is a plan view of the battery body according to the embodiment. FIG. 2 is an exploded perspective view of a band according to an embodiment. FIG. 2 is a perspective view of a base according to an embodiment. FIG. 10 is a diagram schematically illustrating the relationship between the gaps between the cell comps and the base. FIG. 2 is an enlarged perspective view of the periphery of the base of the battery body. 10 is a schematic diagram showing the positional relationship between the strip and the cell comp when the base is in the insertion position. FIG. 10 is a schematic diagram showing the positional relationship between the strip and the cell comp when the base is in the restricted position. FIG. 10 is a schematic diagram showing the positional relationship between the strip and the cell comp in the present embodiment. FIG. FIG. 10 is a schematic diagram showing the positional relationship between a strip and a cell comp in a comparative example.

The following describes an embodiment of the present invention with reference to the drawings.

[Embodiment]
FIG. 1 is a perspective view of a battery unit 1 according to an embodiment.
The battery unit (battery) 1 has a rectangular parallelepiped housing 2. The housing 2 accommodates a battery main body 3 therein.

The battery body 3 has a rectangular base plate 11. A plurality of cell components 12 are fixed to the base plate 11.
The cell comp 12 is a component in which a predetermined number of cells 13 are unitized. The cells 13 are cylindrical. In this embodiment, the longitudinal direction of the cells 13 is referred to as the axial direction. The cells 13 have a positive electrode (positive electrode) and a negative electrode (negative electrode) at one axial end. More specifically, the positive electrode is provided at the axial center of the one axial end of the cell 13. The negative electrode is also provided around the cell 13, radially spaced from the positive electrode. In this embodiment, the cells 13 are arranged so that the axial direction is the up-down direction. The cells 13 are arranged adjacent to each other in a direction perpendicular to the up-down direction. The cells 13 are arranged adjacent to each other in a front-rear direction (first direction) and a left-right direction (second direction) perpendicular to the up-down direction (axial direction). The second direction is a direction intersecting the first direction.

A plate-shaped bus bar 14 is attached to the top surface (one axial end surface) of each adjacent cell 13. The bus bar 14 has a three-layer structure. The bus bar 14 has an insulator in the center of the thickness direction, a positive bus bar 14a (see Figure 2) above the insulator, and a negative bus bar 14b (see Figure 2) below the insulator. The positive electrode of each cell 13 is electrically connected to the positive bus bar 14a. The negative electrode of each cell 13 is electrically connected to the negative bus bar 14b. The positive and negative electrodes of the cells 13 are connected to the bus bar 14 by, for example, welding. This forms a cell comp 12 in which a predetermined number of cells 13 are arranged side by side. The cell comp 12 is a battery in which a predetermined number of cells 13 are connected in parallel.

FIG. 2 is a plan view of the battery main body 3 according to the embodiment.
The cell comparators 12 are disposed on the upper surface of the base plate 11. A plurality of cell comparators 12 are disposed adjacent to each other. In this embodiment, the cell comparators 12 are connected in series. That is, the negative bus bar 14b of one cell comparator 12 is electrically connected to the positive bus bar 14a of the adjacent cell comparator 12. The shapes of the bus bars 14 of the cell comparators 12 differ depending on the arrangement position and connection direction, but the basic structure is the same.

In the battery main body 3 of this embodiment, the cell components 12 are arranged adjacent to each other in the front-to-rear direction (first direction). The cell components 12 are also arranged adjacent to each other in the left-to-right direction (second direction). In the battery main body 3 of this embodiment, multiple cell components 12 are arranged in two U-shaped rows. The multiple cell components 12 are connected in series in two rows. The cell components 12 are adhered to the upper surface of the base plate 11 with an adhesive. This secures the cell components 12 to the upper surface of the base plate 11.

In the battery main body 3, a predetermined gap S is formed between adjacent cell compressors 12. A left-right gap S2 extending in the left-right direction is formed between adjacent cell compressors 12 in the front-to-rear direction. A front-to-rear gap S1 extending in the front-to-rear direction is formed between adjacent cell compressors 12 in the left-to-right direction. The front-to-rear gap S1 and the left-to-right gap S2 are connected.

A strip 20 (see Figure 1) is routed above the cell compressor 12 to cover the front-to-rear gap S1, transmitting signals related to the state of the cells 13. In this embodiment, two strips 20 are routed, one for each of the two rows of cell compressors 12 connected in series.

FIG. 3 is an exploded perspective view of the band 20 according to the embodiment.
The belt-shaped body 20 has flexible printed circuits (FPCs) 21 (wiring members). The FPCs 21 are belt-shaped. The FPCs 21 are electrically connected to the cells 13 and transmit signals related to information about the cells 13. In this embodiment, the FPCs 21 transmit signals related to the temperature and voltage of the cells 13, as examples of information. Therefore, the FPCs 21 include a temperature sensor wiring portion that transmits signals from a temperature sensor that detects the temperature of the cells 13, and a voltage sensor wiring portion that transmits signals from a voltage sensor that measures the voltage of the cells 13.

The FPC 21 has an FPC main body 21a that is routed in the front-to-rear direction, which is the direction in which the cells 13 are adjacent to each other. The FPC main body 21a has an extending portion 21b formed in a cut-and-raised shape at its widthwise (left-to-right) end. Specifically, the FPC main body 21a has an opening-shaped cutout 21c that is cut inward from the outer widthwise end, and an extending portion 21b connected to the inner edge of the cutout 21c. The extending portion 21b has a base end (connecting portion) 21b1 that is connected to the inner edge of the cutout 21c. The extending portion 21b extends toward the cell 13. In this embodiment, the extending portion 21b extends downward. A terminal portion 21d is formed at the tip of the extending portion 21b. A connector portion 21e is connected to the front end (one longitudinal end) of the FPC main body 21a.

A heat-resistant sheet (heat-resistant member) 22 is placed on the underside of the FPC 21 (the surface facing the cell comp 12). The heat-resistant sheet 22 is, for example, a mica sheet. The mica sheet is an insulating sheet made of laminated mica integrated with a silicone adhesive. The heat-resistant sheet 22 is strip-shaped. The heat-resistant sheet 22 is formed to be approximately the same size as the FPC main body 21a. The heat-resistant sheet 22 protects the FPC 21 from the heat of the cell 13. The heat-resistant sheet 22 has an opening-shaped wiring outlet 22a cut out from the outer widthwise edge to the inside widthwise. The wiring outlet 22a is formed to correspond to the position of the base end 21b1 of the extension portion 21b of the FPC 21. The opening shape of the wiring outlet 22a is smaller than the cutout 21c of the FPC 21. This makes it easier to expose only the extension portion 21b of the FPC 21 downward from the heat-resistant sheet 22, making it easier to protect the underside of the FPC 21.

FIG. 4 is a perspective view of the base 23 according to the embodiment.
A base 23 is disposed below the heat-resistant sheet 22. The base 23 is made of, for example, resin. The base 23 is disposed at a predetermined interval in the longitudinal direction of the heat-resistant sheet 22, i.e., in the front-to-rear direction. The predetermined interval is based on the left-to-right gap S2 of the battery main body 3.

The base 23 has a plate-shaped support portion 23a. A flat surface 23a1 is formed above the support portion 23a (one axial side, one insertion direction side). An insertion portion 23b that protrudes downward from the support portion 23a is formed below the support portion 23a (the other axial side, the other insertion direction side). The insertion portion 23b is formed in a shape that allows it to be press-fitted, as an example of insertion, into the gap S of the cell compact 12. Specifically, the insertion portion 23b is formed with a front-rear extending portion (first extending portion) 23b1 that extends in the front-rear direction, and a left-right extending portion (second extending portion) 23b2 that extends in the left-right direction. The front-rear extending portion 23b1 is formed slightly larger than the width of the front-rear gap S1. The left-right extending portion 23b2 is formed slightly larger than the width of the left-right gap S2. In this embodiment, the vertical length L1 of the base 23 (see FIG. 8) is longer than the length L2 (see FIG. 8) of the extending portion 21b of the FPC 21. In other words, the length L2 of the extending portion 21b of the FPC 21 is shorter than the vertical length L1 of the base 23. Therefore, when viewed in a direction intersecting the insertion direction, for example, when viewed from the left and right as shown in FIG. 8, the length L2 of the extending portions 21b located on both sides of the base 23 that sandwich the base 23 is shorter than the vertical length L1 of the base 23.

Here, in the strip 20, the heat-resistant sheet 22 is bonded to the underside of the FPC 21 via an adhesive. Thus, the FPC 21 and the heat-resistant sheet 22 are integrated. The base 23 is bonded to the underside of the integrated heat-resistant sheet 22 via an adhesive. Specifically, the flat surface 23a1 of the support portion 23a is bonded to the underside of the heat-resistant sheet 22. At this time, the front-to-rear extending portion 23b1 of the base 23 is bonded along the front-to-rear direction, and the left-to-right extending portion 23b2 is bonded along the left-to-right direction. The base 23 is also bonded to the heat-resistant sheet 22 with a predetermined gap between them.

This forms the band 20, which is an integrated combination of the FPC 21, heat-resistant sheet 22, and base 23. The band 20 is routed above the cell comps 12 (see Figure 1) along the front-to-rear gap S1 (see Figure 2). The base 23 is inserted from above into the gap S between the cell comps 12, allowing the band 20 to be routed above the cell comps 12. Therefore, the FPC 21, which forms the upper part of the band 20, is positioned above the cell comps 12 with a gap therebetween.

5 is a diagram schematically illustrating the relationship between the gap S between the cell comps 12 and the base 23. In FIG. 5, the gap S is indicated by hatching.
When the insertion portion 23b of the base 23 is inserted, the front-rear extending portion 23b1 is inserted into the front-rear gap S1. Therefore, the base 23 is less likely to move in a direction intersecting the front-rear gap S1. Furthermore, when the insertion portion 23b of the base 23 is inserted, the left-right extending portion 23b2 is inserted into the left-right gap S2. Therefore, the base 23 is less likely to move in a direction intersecting the left-right gap S2. Therefore, the base 23 is less likely to move in the front-rear and left-right directions. On the other hand, the base 23 can move in a direction perpendicular to the plane formed by the front-rear and left-right directions, i.e., in the up-down direction. Therefore, the insertion portion 23b of the base 23 is arranged in the gap S in a state where it can slide up and down.

FIG. 6 is an enlarged perspective view of the periphery of the base 23 of the battery main body 3. As shown in FIG.
The base 23 is sandwiched between the cells 13 of adjacent cell comps 12, and its position in the vertical direction (insertion direction), i.e., its height, is adjustable. With the height adjusted, the terminal portion 21d of the FPC 21 of the strip 20 is electrically connected to the bus bar 14 of the cell comp 12. The terminal portion 21d is electrically connected to the bus bar 14 by, for example, welding.

Fig. 7 is a schematic diagram showing the positional relationship between the band 20 and the cell comp 12 when the base 23 is in the insertion position. Fig. 8 is a schematic diagram showing the positional relationship between the band 20 and the cell comp 12 when the base 23 is in the restriction position.
As shown in FIGS. 7 and 8, in this embodiment, the length L1 of the base 23 in the vertical direction is longer than the length L2 of the extension portion 21b.

As shown in Figure 7, when the insertion portion 23b of the base 23 is firmly inserted into the gap S and the base 23 is inserted to the insertion position where the support portion 23a of the base 23 contacts the bus bar 14 of the cell comp 12, the extension portion 21b, which is part of the FPC 21, is held in a bent state, as shown in Figure 7.

8, when the base 23 is moved in the direction of being pulled out of the gap S, the extension portion 21b deforms from a bent state to a fully extended state, and the extension portion 21b restricts the movement of the strip 20. At this time, the extension portion 21b is fully extended perpendicularly or at an angle relative to the top surface of the busbar 14. When the extension portions 21b, located on both sides of the base 23 sandwiching the base 23 in a left-right view, are fully extended, the distance L3 between the base end 21b1 of the extension portion 21b and the busbar 14 (the distance between the base end 21b1 and the busbar 14 in the direction perpendicular to the top surface of the busbar 14) is less than the length of the extension portion 21b. In this embodiment, the vertical length L1 of the base 23 is longer than the length L2 of the extension portion 21b, and therefore the insertion direction length L1 of the base 23 is longer than the distance L3. That is, because the vertical length L1 of the base 23 is longer than the distance L3, even when the extension portion 21b moves to the restricted position where it is fully extended, the insertion portion 23b remains inserted into the gap S. Therefore, in this embodiment, regardless of the vertical position of the base 23, movement in the front-to-back or left-to-right directions is prevented.

Fig. 9 is a schematic diagram showing the positional relationship between the strip 20 and the cell comp 12 of this embodiment. Fig. 10 is a schematic diagram showing the positional relationship between the strip 120 and the cell comp 12 of a comparative example.
The strip 120 of the comparative example differs from the strip 20 of the present embodiment in that it has a resin member 123 attached to the mounting surface of the cell compressor 12 instead of the base 23 .

Generally, the surface position of the cell comp 12 varies due to factors such as the mounting tolerance of the cells 13. Furthermore, because the cell comp 12 is attached to the base plate 11 via adhesive, the thickness tolerance of the adhesive 15 also comes into play, making the surface position of the cell comp 12, i.e., its height, prone to variation.

For this reason, in the comparative example, when attempting to route the FPC 21 flatly, as shown in Figure 10, a gap was likely to form between the resin member 123 and the top surface of the cell comp 12, and it was sometimes not possible to secure the FPC 21 sufficiently to the cell comp 12. On the other hand, when prioritizing fixation and attempting to secure the resin member 123 to the cell comp 12, the FPC 21 could bend, causing a load to be applied to part of the FPC 21.

In contrast, in this embodiment, as shown in Figure 9, the gaps S between the cell comps 12 can be used to adjust the vertical position of the base 23. This makes it easier to align the height of each base 23 regardless of the height of the top surface of each cell comp 12, allowing the FPC 21 to be routed in a nearly flat state. Therefore, in this embodiment, bending of the FPC 21 can be easily suppressed, and loads applied to the FPC 21 can be suppressed.

As described above, according to this embodiment, in a battery unit 1 including a plurality of cells 13 arranged adjacent to each other and an FPC 21 electrically connected to the cells 13 and through which signals related to information about the cells 13 are conducted, the FPC 21 is arranged in the direction in which the cells 13 are adjacent to each other with a gap between them, and has a base 23 including an insertion portion 23b inserted between the cells 13 and arranged so as to be able to slide relative to the cells 13, and a support portion 23a supported by the insertion portion 23b and supporting the FPC 21.
According to this configuration, by adjusting the height (position in the insertion direction) of the base 23, the FPC 21 can be routed in a nearly flat state regardless of the height of the surface of each cell 13. This prevents bending of the FPC 21 and reduces load on the FPC 21. This makes it possible to provide a battery unit 1 in which the FPC 21 is fixed with reduced load.

In this embodiment, a heat-resistant sheet 22 is placed on the cell 13 side of the FPC 21 .
This configuration can protect the FPC 21 from heat generated by the cell 13 .

In addition, in this embodiment, the multiple cells 13 are adjacent to each other in the front-to-back and left-to-right directions, and the insertion portion 23b has a front-to-back extension portion 23b1 extending in the front-to-back direction and a left-to-right extension portion 23b2 extending in the left-to-right direction.
According to this configuration, the base 23 can be restricted from moving in the front-rear and left-right directions, so that the position of the FPC 21 supported by the base 23 can be easily fixed at a specified position.

In addition, in this embodiment, the FPC 21 has an FPC main body 21a that is arranged along the direction in which the cells 13 are adjacent to each other, and a plurality of extension portions 21b that extend from the FPC main body 21a toward the cells 13 and are connected to bus bars 14 that are connected to electrodes of the cells 13, and the vertical length L1 of the base 23 is longer than the distance L3 between the base end 21b1, which is the connection portion between the extension portion 21b and the FPC main body 21a of the extension portion 21b when the extension portion 21b that sandwiches the base 23 is fully extended, and the bus bar 14 when viewed in the left-right direction (see Figure 8), which is an example of a view in a direction intersecting the insertion direction.
According to this configuration, even when the extension portion 21b is fully extended, the base 23 can be prevented from slipping out from between the cells 13, so that the FPC 21 can be maintained in a specified position.

In this embodiment, the length L2 of the extension 21b is shorter than the length L1 of the base 23 in the up-down direction.
According to this configuration, the length L2 of the extending portion 21b can be shortened, thereby reducing the amount of material used for the FPC 21. Therefore, since the amount of material used can be reduced, the manufacturing cost of the FPC 21 can be reduced.

Other Embodiments
The above-described embodiment merely shows one aspect of the present invention, and any modifications and applications are possible without departing from the spirit of the present invention.

In the above embodiment, the extension portion 21b is described as being connected to the bus bar 14, but it may also be connected to the cell 13.

In the above embodiment, the front-to-rear direction is exemplified as the first direction, and the left-to-right direction is exemplified as the second direction, but the first and second directions are not limited to these. The first and second directions may be any directions that form a plane perpendicular to the axial direction of the cell 13.

In the above embodiment, a configuration was described in which the length L1 of the base 23 in the insertion direction is longer than the distance L3 between the connection portion 21b1 of the extension portion 21b with the main body portion 21a of the extension portion 21b and the busbar 14 or cell 13 when the extension portions 21b sandwiching the base 23 are fully extended as viewed in a direction intersecting the insertion direction, and the distance L3 when the extension portions 21b adjacent to the base 23 and sandwiching the base 23 are fully extended was described. However, the extension portions 21b sandwiching the base 23 as viewed in a direction intersecting the insertion direction are not limited to extension portions 21b located on both sides adjacent to the base 23, but may be a pair of extension portions 21b sandwiching the base 23 and sandwiching the bent extension portion 21b between them. In other words, the extensions 21b that sandwich the base 23 are located on both sides of the base 23, and as long as the base 23 can be prevented from slipping out from between the cells 13, the extensions 21b do not have to be adjacent to the base 23, and may be away from the base 23.

In the above embodiment, the length L1 of the base 23 in the insertion direction is longer than the distance L3 between the busbar 14 or cell 13 and the connection portion 21b1 of the extension portion 21b with the main body portion 21a of the extension portion 21b when the extension portions 21b sandwiching the base 23 are fully extended in a left-right view, which is a view in a direction intersecting the insertion direction. However, the view in a direction intersecting the insertion direction may also be, for example, a front-to-back view. In other words, the length L1 of the base 23 in the insertion direction may be longer than the distance L3 between the busbar 14 or cell 13 and the connection portion 21b1 of the extension portion 21b with the main body portion 21a of the extension portion 21b when the extension portions 21b sandwiching the base 23 are fully extended in a front-to-back view.

In the above embodiment, the length L1 of the base 23 and the length L2 of the extension portion 21 are described as being the same regardless of the placement position, but the length L1 of the base 23 and the length L2 of the extension portion 21 may be varied depending on the placement position. For example, the vertical length L1 of the base 23 may be varied depending on the placement position as long as it is longer than the distance L3. In other words, the length L1 of the base 23 and the length L2 of the extension portion 21 may be varied as long as it prevents the base 23 from slipping out from between the cells 13.

In the above embodiment, the length L2 of the extension portion 21b is shorter than the vertical length L1 of the base 23. However, the length L2 of the extension portion 21b may be longer than the vertical length L1 of the base 23. For example, if the length L2 of the extension portion 21b is longer than the vertical length L1 of the base 23, the extension portion 21b can extend at a gentle incline, in other words, in a direction along the upper surface of the busbar 14, thereby restricting the movement of the strip 20. In other words, the length and extension direction (inclined state) of each extension portion 21b may be any configuration as long as the length L1 in the insertion direction of the base 23 is longer than the distance L3 between the base end 21b1 of the extension portion 21b when the extension portion 21b is fully extended and the busbar 14 or cell 13 to which the extension portion 21b is connected.

[Configuration supported by the above embodiment]
The above embodiment supports the following configurations.

(Configuration 1) A battery comprising a plurality of cells arranged adjacent to each other and a wiring member electrically connected to the cells and through which signals related to information about the cells are conducted, characterized in that the wiring member is arranged in the direction in which the cells are adjacent to each other with a gap between them, and has a base comprising an insertion portion inserted between the cells and arranged so as to be slidable relative to the cells, and a support portion supported by the insertion portion and supporting the wiring member.
With this configuration, by adjusting the position of the base in the insertion direction, the wiring members can be routed in a nearly flat state regardless of the position of the surface of each cell in the insertion direction. This prevents bending of the wiring members and reduces load on the wiring members. Therefore, a battery can be provided in which the wiring members are fixed in a state where load is reduced.

(Configuration 2) The battery according to configuration 1, wherein a heat-resistant member is superimposed on the cell side of the wiring member.
This configuration can protect the wiring members from heat generated by the cells.

(Configuration 3) A battery as described in configuration 1 or 2, characterized in that the multiple cells are adjacent to each other in a predetermined first direction and a second direction intersecting the first direction, and the insertion portion has a first extension portion extending in the first direction relative to the insertion direction, and a second extension portion extending in the second direction.
According to this configuration, the base can be restricted from moving in the first direction and the second direction, so that the wiring member supported by the base can be easily fixed at a specified position.

(Configuration 4) A battery described in any one of configurations 1 to 3, characterized in that the wiring member has a main body portion arranged along the direction in which the cells are adjacent to each other, and an extension portion extending from the main body portion toward the cell and connected to a bus bar connected to an electrode of the cell or to the cell, and the length of the base in the insertion direction is longer than the distance between the connection portion of the extension portion with the main body portion and the bus bar or the cell when the extension portion sandwiching the base is fully extended when viewed in a direction intersecting the insertion direction.
According to this configuration, even when the extension portion is fully extended, the base can be prevented from slipping out from between the cells, so that the wiring member can be maintained in a specified position.

(Configuration 5) The battery according to configuration 4, wherein the length of the extension portion is shorter than the length of the base in the insertion direction.
According to this configuration, the length of the extending portion can be shortened, which reduces the amount of material used for the wiring member, thereby reducing the manufacturing cost of the wiring member.

1 Battery unit (battery)
13 Cell 14 Bus bar 21 FPC (wiring member)
21a FPC main body (main body)
21b: Extension portion 21b1: Base end (connection portion with main body portion)
22 Heat-resistant sheet (heat-resistant member)
23 Base 23a Support portion 23b Insertion portion 23b1 Front-rear direction extension portion (first extension portion)
23b2 Left-right extending portion (second extending portion)
L1 length L2 length

Claims (5)

A battery comprising a plurality of adjacently arranged cells (13) and a wiring member (21) electrically connected to the cells (13) and through which signals related to information of the cells (13) are conducted,
The wiring member (21) is arranged in a direction in which the cells (13) are adjacent to each other with a gap therebetween,
The base (23) is characterized by having an insertion portion (23b) that is inserted between the cells (13) and arranged slidably relative to the cells (13) in an insertion direction, which is the height direction of the cells (13), and a support portion (23a) that is supported by the insertion portion (23b) and supports the wiring member (21).
Battery. A heat-resistant member (22) is superimposed on the cell (13) side of the wiring member (21).
10. The battery of claim 1. The plurality of cells (13) are adjacent to each other in a predetermined first direction and a second direction intersecting the first direction,
The insertion portion (23b) includes a first extension portion (23b1) extending in the first direction relative to the insertion direction, and a second extension portion (23b2) extending in the second direction.
3. The battery according to claim 1 or 2. A battery comprising a plurality of adjacently arranged cells (13) and a wiring member (21) electrically connected to the cells (13) and through which signals related to information of the cells (13) are conducted,
The wiring member (21) is arranged in a direction in which the cells (13) are adjacent to each other with a gap therebetween,
The base (23) includes an insertion portion (23b) that is inserted between the cells (13) and arranged so as to be slidable relative to the cells (13), and a support portion (23a) that is supported by the insertion portion (23b) and supports the wiring member (21),
The wiring member (21) has a main body portion (21a) arranged along the direction in which the cells (13) are adjacent to each other, and a plurality of extension portions (21b) extending from the main body portion (21a) toward the cells (13) and connected to bus bars (14) connected to electrodes of the cells (13) or to the cells (13),
a length (L1) of the base (23) in the insertion direction is longer than a distance (L3) between a connection portion (21b1) of the extension portion (21b) with the main body portion (21a) and the bus bar (14) or the cell (13) when the extension portion (21b) sandwiching the base (23) is fully extended as viewed in a direction intersecting the insertion direction.
Battery. The length (L2) of the extension portion (21b) is shorter than the length (L1) of the base (23) in the insertion direction.
5. The battery of claim 4.