Busbar retaining member and battery module

Abstract

To maintain a good connection state between a bus bar and a plurality of batteries even when the batteries expand in a parallel direction.SOLUTION: A bus bar holding member comprises: a plurality of holding member main bodies 50 each of which has a bus bar holding part 52 that holds a bus bar 3 electrically connected with batteries 20, and a harness housing part 51 that houses a harness 4 electrically connected with the bus bar 3 and extending in a parallel direction L; and a coupling structure 70 for coupling between the harness housing parts 51 adjacent to each other in the parallel direction L, in the plurality of holding member main bodies 50 arranged in the parallel direction L. The coupling structure 70 comprises: extended parts 71 provided in a width direction W, in the holding member main bodies 50; and a moving and coupling member 81 configured separately from the extended parts 71 so as to be coupled with at least one of the extended parts 71 movably in the parallel direction L while straddling between the extended parts 71 arranged in the parallel direction.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] As exemplified in Patent Document 1, a battery module mounted on an electric vehicle or a hybrid vehicle includes a battery unit in which a plurality of batteries are arranged along the parallel direction, a bus bar electrically connected to the batteries, a bus bar holding member that holds the bus bar, and a harness electrically connected to the bus bar. Thereby, the tip of the harness is connected to the battery via the bus bar, and the voltage of the battery is output to the outside of the battery module.

[0002] However, as exemplified in Patent Document 1, since the battery unit has a plurality of batteries arranged along the parallel direction, when these batteries expand due to heat generation, a positional deviation in the parallel direction occurs between the bus bar held by the bus bar holding member and the battery. As a result, there is a possibility that a good connection state between the bus bar and the battery cannot be maintained.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a bus bar holding member and a battery module that can maintain a good connection state between the bus bar and the battery even when a plurality of batteries expand in the parallel direction.

Means for Solving the Problems

[0005] This invention relates to a busbar holding member for holding a busbar attached to a battery unit in which a plurality of batteries are arranged in parallel, and comprises a plurality of holding member bodies having a busbar holding portion for holding the busbar which is electrically connected to the batteries, and a harness housing portion for housing a harness which is electrically connected to the busbar and extends in the parallel direction, and a connecting structure for connecting adjacent harness housing portions in the plurality of holding member bodies arranged in the parallel direction, wherein the connecting structure comprises an extension portion provided in the holding member body in a direction intersecting the parallel direction, and a movable connecting member which is composed separately from the extension portion, straddles the space between the extension portions arranged in the parallel direction, and is movably connected to at least one of the extension portions in the parallel direction. The holding member body is arranged in pairs in the width direction perpendicular to the parallel direction, with the axis along the parallel direction as the axis of symmetry, and the extended portion connects the pair of harness housing portions in the width direction. It is characterized by the following:

[0006] Furthermore, this invention relates to a battery module comprising a plurality of batteries arranged in parallel, busbars electrically connected to the batteries, a plurality of busbar holding members for holding the busbars, and a harness electrically connected to the busbars, wherein the busbar holding members comprise a plurality of holding member bodies having a busbar holding portion for holding the busbars and a harness housing portion for housing the harness, and a connecting structure arranged along the parallel direction in which the batteries are arranged in parallel and connecting adjacent harness housing portions, wherein the connecting structure comprises an extension portion provided in a direction intersecting the parallel direction of the holding member body, and a movable connecting member configured separately from the extension portion, straddling the space between the extension portions arranged in the parallel direction and connecting to the extension portion, and the extension portions are configured to move within a predetermined range along the movable connecting member. The holding member body is arranged in pairs in the width direction perpendicular to the parallel direction, with the axis along the parallel direction as the axis of symmetry, and the extended portion connects the pair of harness housing portions in the width direction. It is characterized by the following:

[0007] With this invention, at least one of the extensions provided on each of the multiple holding member bodies is connected to each other so as to be movable in the parallel direction via a movable connecting member. As a result, the busbar held by the busbar holding member can move in the parallel direction to follow the positional displacement in the parallel direction caused by the thermal expansion of the batteries. Therefore, even if multiple batteries expand in the parallel direction due to heat, a good connection between the busbar and the batteries can be maintained.

[0008] Also, The holding member body is arranged in pairs in the width direction perpendicular to the parallel direction, with the axis along the parallel direction as the axis of symmetry, and the extended portion connects the pair of harness housing portions in the width direction. There are .

[0009] Therefore By connecting each of the pair of harness housings arranged in the width direction with the extension portion that forms part of the connecting structure, each of these pairs of harness housings can be moved in a balanced manner when moved in a parallel direction via the connecting structure.

[0010] Furthermore, this invention allows the extended portion to be configured not only as part of a connecting structure that links adjacent harness housings in the parallel direction, but also to have a connecting function between a pair of harness housings arranged in the width direction, thereby simplifying the configuration.

[0011] In another aspect of this invention, at least one of the extension portion and the movable connecting member may have a movement restricting portion that restricts the movement of the movable connecting member relative to the extension portion in an orthogonal direction perpendicular to the width direction and the parallel direction.

[0012] This invention allows the holding member body to move smoothly in a parallel direction by restricting the movement of the movable connecting member in a direction perpendicular to the extension portion using the movement restricting portion.

[0013] In another aspect of this invention, a parallel direction restricting portion may be provided that restricts the holding member body from moving beyond a predetermined range in the parallel direction relative to the movable connecting member.

[0014] This invention allows the parallel direction restricting portion to prevent the holding member body from moving excessively beyond the predetermined range in the parallel direction relative to the movable connecting member.

[0015] Here, the parallel movement restricting unit may restrict adjacent holding member bodies from moving beyond a predetermined range in at least one of the directions toward each other or toward each other.

[0016] Furthermore, the predetermined range indicates the range in which adjacent harness housings can move to a predetermined proximity position when they move in a direction that brings them closer to each other. For example, a predetermined proximity position can be a position in which adjacent harness housings can maintain a certain distance from each other when they are close to each other.

[0017] Furthermore, the predetermined range indicates the range in which adjacent harness housings can move to a predetermined separation position when they move in a direction that separates them from each other. For example, the predetermined separation position can be the position just before adjacent harness housings separate from each other.

[0018] In another aspect of this invention, the movable connecting member is configured to be movable in the parallel direction to each of the extensions arranged in the parallel direction, and the parallel direction restricting portion may be provided in the central part of the movable connecting member in the parallel direction and also arranged between the extensions.

[0019] With this invention, since the parallel movement restricting portion is interposed between adjacent holding member bodies in the parallel direction, it can restrict adjacent holding member bodies from coming into contact with each other when they move in a direction that brings them closer together.

[0020] Furthermore, each of the holding member bodies connected to both sides of the moving connection member in the parallel direction can be restricted from moving in the parallel direction by the parallel direction restricting portion that is common to each other between the holding member bodies on both sides with respect to the moving connection member. Therefore, the configuration can be simplified as compared with the case where the parallel direction restricting portion is provided in each of the holding member bodies on both sides.

[0021] As another aspect of the present invention, the moving connection member is provided with stepped portions having stepped ends in the parallel direction, and the parallel direction restricting portion is provided on the side of the extending portion adjacent to the extending portion, which is disposed across adjacent extending portions, rather than on the stepped portion of the moving connection member, and protrudes toward the moving connection member. The stepped portion and the parallel direction restricting portion may interfere with each other to restrict the holding member bodies from moving beyond a predetermined range in a direction in which they are separated from each other.

[0022] According to the present invention, the stepped portion and the parallel direction restricting portion can interfere with each other to restrict the adjacent extending portions from moving beyond a predetermined range in a direction in which they are separated from each other in the parallel direction against their will.

[0023] As another aspect of the present invention, the extending portion may be formed to be elastically deformable with respect to the orthogonal direction.

[0024] According to the present invention, even when the movement of the moving connection member with respect to the extending portion is restricted by the movement restricting portion, the extending portion can be elastically deformed in the orthogonal direction to a position where the parallel direction restricting portion does not interfere with the stepped portion in the parallel direction, so that the extending portion and the moving connection member can be assembled without any hindrance between the parallel direction restricting portion and the stepped portion.

[0025] As another aspect of the present invention, the connection structure may be provided with a parallel direction restricting portion that restricts the holding member body from moving beyond a predetermined range in the parallel direction with respect to the moving connection member.

[0026] According to the present invention, the parallel direction restricting portion can restrict the holding member main body from excessively moving beyond the predetermined range in the parallel direction with respect to the moving connection member.

[0027] The predetermined range is within a range of a moving distance where the holding member main bodies do not separate from each other until they separate from each other in the parallel direction. Further, it is preferable that the predetermined range has a range of a moving distance longer than a moving distance by which a plurality of batteries move in the parallel direction due to thermal expansion.

[0028] Also, as an aspect of the present invention, a portion between the holding member main bodies adjacent in the parallel direction may be at different positions between the pair of holding member main bodies.

[0029] According to the present invention, the position between the holding member main bodies adjacent in the parallel direction has lower rigidity compared to other positions in the parallel direction, but since this position can have a different configuration between the pair of holding member main bodies arranged in the width direction, the bending rigidity as a whole can be ensured.

Advantages of the Invention

[0030] According to the present invention, it is possible to provide a bus bar holding member and a battery module that can maintain a good connection state between the bus bar and the battery even when a plurality of batteries expand in the parallel direction.

Brief Description of the Drawings

[0031] [Figure 1] Schematic perspective view of the battery module of the present embodiment viewed from above [Figure 2] Exploded perspective view of the battery module of the present embodiment [[ID=..]] [Figure 3] Enlarged perspective view showing the cover with a virtual line in region X of FIG. 2 [Figure 4] Enlarged perspective view of the portion shown in FIG. 3 viewed from the lower left obliquely [Figure 5] Enlarged perspective view of the portion shown in FIG. 3 viewed from the lower right obliquely [Figure 6]The key parts along the line D1-D1 in Figure 3 are partially shown with dashed lines, and the perspective cross-section is viewed from above the tip side relative to the direction of the arrow. [Figure 7] Figure 6 shows a perspective cross-sectional view of the movable connecting member, partially broken in the cross-section. [Figure 8] (a) is a cross-sectional view showing the main part along the line D3-D3 in Figure 3, and (b) is a cross-sectional view showing the main part along the line D2-D2 in Figure 8(a). [Figure 9] (a) is a perspective view of the movable connecting member from the left side, the leading end in the parallel direction, and viewed from above. (b) is a perspective view of the movable connecting member from the left side, the leading end in the parallel direction, and viewed from below. [Figure 10] (a) is a cross-sectional view corresponding to Figure 8(a) showing a pair of adjacent busbar retaining members spaced apart from each other, and (b) is a cross-sectional view showing them in close proximity. [Figure 11] (a) is a cross-sectional view showing the main parts of the extension and movable connecting member just before assembly, corresponding to Figure 8(a), and (b) is a cross-sectional view showing the assembly in progress. [Modes for carrying out the invention]

[0032] One embodiment of this invention will be described below with reference to the drawings. Figure 1 shows a schematic perspective view of the battery module 1 viewed from above, and Figure 2 shows a roughly exploded perspective view of the battery module 1. Figure 3 shows an enlarged perspective view of area X in Figure 2, with the cover 60 indicated by dashed lines.

[0033] Here, the vertical direction in Figure 1 is defined as the height direction H, and the direction in which the multiple battery cells 20 are arranged in parallel in Figure 1 is defined as the parallel direction L. Here, the height direction H and the parallel direction L are orthogonal to each other. The direction orthogonal to the parallel direction L and the height direction H is defined as the width direction W. In Figure 1, the left side along the parallel direction L is defined as the tip side LF, and the right side in Figure 1 is defined as the base side LB. Along the width direction W, the left side is defined as the left side WL, and the right side is defined as the right side WR. Also, the upper side along the height direction H is defined as the upper side HU, and the lower side is defined as the lower side HD.

[0034] As shown in Figures 1 and 2, the battery module 1 consists of a battery unit 2 in which a plurality of battery cells 20 are arranged in parallel along the parallel direction L, a plurality of conductive members 3 electrically connected to the battery cells 20, a wire harness 4 electrically connected to the conductive members 3, and a busbar holding member 5 that holds the conductive members 3.

[0035] The battery unit 2 consists of multiple battery cells 20 arranged in parallel along the parallel direction L. In other words, the battery cells 20 are stacked along the parallel direction L. The battery cell 20 comprises a flat, roughly box-shaped battery body 21 and bolt-shaped positive terminal 22 and negative terminal 23 that protrude upward HU from the top surface of the battery body 21. The positive terminal 22 and negative terminal 23 protrude from both ends of the battery body 21 in the width direction W.

[0036] The battery cells 20 configured in this way are stacked along the parallel direction L as described above. More specifically, the multiple battery cells 20 are arranged along the parallel direction L such that the upper surfaces of the battery bodies 21 are on the same plane, and the positive terminals 22 and negative terminals 23 of adjacent battery bodies 21 are adjacent to each other. In other words, the battery bodies 21 of the battery cells 20 are arranged along the parallel direction L such that the positive terminals 22 and negative terminals 23 alternately face opposite directions.

[0037] As shown in Figures 1 and 2, multiple conductive members 3 are arranged along the parallel direction L on each side of the width direction W of the busbar holding member 5. The conductive members 3 are connected to the positive terminal 22 and negative terminal 23 of the battery cells 20 which are arranged in parallel. As shown in Figure 2, the conductive member 3 consists of a connecting busbar 30a and two single busbars 30b positioned at both ends in the parallel direction L.

[0038] As shown in Figure 2, the wire harness 4 consists of a main line 4a made up of bundled insulated wires, and multiple branch lines 4b made up of individual insulated wires branching off from the main line 4a. The insulated wire consists of a conductor located in the center and an insulating coating that covers the outside of the conductor. At the tip of the insulated wire, a portion of the insulating coating has been stripped, exposing the conductor. This exposed conductor is welded to the conductive member 3. Furthermore, the welding method for welding the conductor to the conductive member 3 can be any appropriate welding method such as ultrasonic welding, vibration welding, or laser welding.

[0039] As shown in Figures 1 and 3, the busbar holding member 5 comprises a plurality of holding member bodies 50 on which the conductive members 3 are arranged, a plurality of covers 60 that cover the top of the holding member bodies 50, and a connecting structure 70 that connects the plurality of holding member bodies 50 arranged along the parallel direction L.

[0040] As shown in Figure 3, the holding member body 50 includes a harness housing section 51 that houses the wire harness 4 along the parallel direction L, and a plurality of busbar holding sections 52 that hold conductive members 3 that are electrically connected to the battery cell 20.

[0041] As shown in Figure 3, the harness housing section 51 is composed of a flat plate-shaped bottom section 511 extending along the parallel direction L, and side wall sections 512 erected from both ends of the bottom section 511 in the width direction W toward the upper side HU. That is, the harness housing section 51 is formed in a concave cross-section with an opening D that opens toward the upper side HU, and a housing space S is formed for housing the main line 4a of the wire harness 4, which is made up of bundled insulated wires. Of the pair of side wall portions 512, the right side wall portion 512 is designated as the right side wall portion 512R, and the left side wall portion 512 is designated as the left side wall portion 512L.

[0042] As shown in Figure 2, the holding member body 50, i.e., the harness housing section 51, configured in this way, is arranged in a row of three along the parallel direction L. The busbar holding member 5 is composed of three harness housing sections 51 arranged along the parallel direction L, forming a connecting housing section 55 that extends along the parallel direction L. The connecting housing sections 55 are arranged in pairs with the axis along the parallel direction L as the axis of symmetry. Each pair of connecting housing sections 55 is formed by resin molding in an elongated linear shape and is arranged parallel to each other at a predetermined distance in the width direction W.

[0043] Here, as shown in Figure 2, of the pair of connecting housings 55, the right connecting housing 55 is designated as the right connecting housing 55R, and the left connecting housing 55 is designated as the left connecting housing 55L. Furthermore, in the right connecting housing 55R, the three harness housings 51 arranged along the parallel direction L are designated as the front harness housing 51Ra, the intermediate harness housing 51Rb, and the base harness housing 51Rc, respectively, from the front LF to the base LB.

[0044] Similarly, in the left-side connecting housing section 55L, the three harness housing sections 51 arranged along the parallel direction L are designated as the front-end harness housing section 51La, the intermediate harness housing section 51Lb, and the base-end harness housing section 51Lc, respectively, from the front-end side LF to the base-end side LB.

[0045] Furthermore, as shown in Figure 2, the pair of connecting housings 55 are formed such that the lengths L in the parallel direction are the same and their positions L in the parallel direction coincide. However, the tip-side harness housing 51La is formed such that the length L in the parallel direction is longer than that of the tip-side harness housing 51Ra, the base-side harness housing 51Lc is formed such that the length L in the parallel direction is shorter than that of the base-side harness housing 51Rc, and the intermediate harness housings 51Rb and intermediate harness housings 51Lb are formed such that the lengths L in the parallel direction are the same.

[0046] As a result, the multiple harness housings 51 arranged in parallel direction L have their respective intermediate portions (50A) between the left-side connecting housing 55L and the right-side connecting housing 55R at different positions in the parallel direction L.

[0047] Figure 4 shows an enlarged perspective view of the area shown in Figure 3, viewed from the lower left, and Figure 5 shows an enlarged perspective view of the area shown in Figure 3, viewed from the lower right. For example, as shown in Figures 2 to 5, the portion (50A) between the front harness housing 51Ra and the intermediate harness housing 51Rb in the right-side connecting housing 55R is located further towards the front LF than the portion (50A) between the front harness housing 51La and the intermediate harness housing 51Lb in the left-side connecting housing 55L.

[0048] However, as shown in Figure 3, the left side wall portion 512L of the right-side tip harness housing portion 51Ra extends toward the base end LB until the end portion 512LB of the base end LB coincides in the parallel direction L with the portion (50A) between the tip harness housing portion 51La and the intermediate harness housing portion 51Lb. On the other hand, the right-side intermediate harness housing portion 51Rb is formed such that the end portion 512LF of the tip end LF of the left side wall portion 512L is shifted toward the housing space S in the width direction W compared to the end portion 512LB, and extends toward the tip end LF along the end portion 512LB.

[0049] Furthermore, as shown in Figures 4 and 5, in both the left and right intermediate harness housings 51Lb and 51Rb, the end portion 511LF of the tip side LF of the bottom portion 511 extends beyond the portion (50A) between it and the tip side harness housings 51La and 51Ra to the tip side LF. As a result, in the portion (50A) between the harness housings 51, the ends of the base side LB of the tip side harness housings 51La and 51Ra are supported from the lower HD by the end portion 511LF of the bottom portion 511 that extends to the tip side LF in the intermediate harness housings 51Lb and 51Rb.

[0050] Furthermore, the portion (50A) between the intermediate harness housing 51Rb and the base-side harness housing 51Rc in the right-side connecting housing 55R is located further forward LF than the portion (50A) between the intermediate harness housing 51Lb and the base-side harness housing 51Lc in the left-side connecting housing 55L (see Figure 2).

[0051] As shown in Figure 2, the pair of connecting housings 55 are integrally connected via the end connecting portion 56, the central connecting portion 57, and the connecting structure 70. The end connecting portion 56 is provided at both ends of the pair of connecting housing portions 55 in the parallel direction L. The end connecting portion 56 consists of a connecting bottom portion 561 that connects the bottom portions 511 together along the width direction W, and a pair of connecting wall portions 562 that are erected from both ends of the connecting bottom portion 561 in the parallel direction L.

[0052] The connecting bottom portion 561 is integrally formed with the bottom portion 511 (see Figure 3), and the connecting wall portion 562 is integrally formed with the side wall portion 512. The space formed by these connecting bottom portion 561 and the pair of connecting wall portions 562 is formed to accommodate the wire harness 4, similar to the accommodation space S.

[0053] Multiple central connecting sections 57 and connecting structures 70 are provided in the space between the two ends of the pair of connecting housing sections 55 in the parallel direction L. The connecting structures 70 will be described later.

[0054] As shown in Figure 2, a plurality of busbar holding portions 52 are provided on both outer sides in the width direction W of a pair of connecting housing portions 55 that are arranged in pairs in the width direction W. Specifically, the plurality of busbar holding portions 52 are arranged at predetermined intervals along the parallel direction L, and each extends outward in the width direction W from the outer edge in the width direction W of the bottom portion 511 of the left and right harness housing portions 51, respectively.

[0055] Each of the multiple busbar holders 52 is equipped with a conductive member 3. The busbar holder 52 individually holds the multiple conductive members 3.

[0056] Furthermore, as shown in Figure 3, the left side wall 512L of the left harness housing 51 and the right side wall 512R of the right harness housing 51 are provided with multiple insertion openings 53 in a parallel direction L at predetermined intervals, through which insulated wires forming branch lines 4b branching off from the main line 4a are inserted.

[0057] The insertion opening 53 is formed at a predetermined position in the parallel direction L of the side wall portion 512, penetrating from the upper end to the lower end of the side wall portion 512 in the thickness direction (width direction W), and has a concave cross-section with an opening on the upper side HU. Furthermore, the distance between adjacent insertion ports 53 in the parallel direction L is equal to twice the distance between the battery body 21 and the adjacent negative terminal 23 in the battery cell 20.

[0058] The branch wires 4b that branch off from the main line 4a are led outwards in the width direction W from the housing space S through the insertion opening 53, and as described above, the tips of the insulated wires forming the branch wires 4b are electrically connected to the conductive member 3.

[0059] As shown in Figures 1 and 2, the cover 60 has a flat top surface portion 61 that extends in the width direction W and the parallel direction L so as to be able to close the opening D (see Figure 3) of the pair of harness housing portions 51 in the retaining member body 50. The top surface portion 61 faces the bottom portion 511 of the harness housing portion 51 across the housing space S.

[0060] As shown in Figures 1 and 2, three of the covers 60 configured in this way are arranged side by side along the parallel direction L on each of the left and right sides of the busbar holding member 5.

[0061] As shown in Figure 2, a connecting cover portion 65 extending along the parallel direction L is formed by three covers 60 arranged along the parallel direction L. As shown in Figure 2, the connecting cover portions 65 are arranged in pairs with the axis along the parallel direction L as the axis of symmetry. Each pair of connecting cover portions 65 is formed by resin molding in an elongated linear shape, and is arranged parallel to each other at a predetermined distance in the width direction W, and is connected to each other in the width direction W via end cover connecting portions 63. The end cover connecting portions 63 are provided at both ends of the pair of connecting cover portions 65 in the parallel direction L.

[0062] Here, of the pair of connecting cover sections 65, the right connecting cover section 65 is designated as the right connecting cover section 65R, and the left connecting cover section 65 is designated as the left connecting cover section 65L. Furthermore, as shown in Figure 2, in the right connecting cover section 65R, the three covers 60 arranged along the parallel direction L are designated as the front end cover 60Ra, the intermediate cover 60Rb, and the base end cover 60Rc, respectively, from the front end LF to the base end LB.

[0063] Similarly, in the left-side connecting cover section 65L, the three covers 60 arranged along the parallel direction L are designated as the front end cover 60La, the intermediate cover 60Lb, and the base end cover 60Lc, respectively, from the front end LF to the base end LB.

[0064] Furthermore, as shown in Figure 2, the pair of connecting cover portions 65 are formed such that the lengths L in the parallel direction are the same and their positions L in the parallel direction coincide. However, the tip-side cover 60La is formed to have a longer length L in the parallel direction than the tip-side cover 60Ra, the base-side cover 60Lc is formed to have a shorter length L in the parallel direction than the base-side cover 60Rc, and the intermediate cover 60Rb and intermediate cover 60Lb are formed to have the same length L in the parallel direction.

[0065] As a result, the multiple covers 60 arranged in parallel direction L have the positions of their respective intervening portions 60A in the parallel direction L, with respect to the left-side connecting cover portion 65L and the right-side connecting cover portion 65R.

[0066] For example, in the right-side connecting cover section 65R, the portion 60A between the front-end cover 60Ra and the intermediate cover 60Rb is located further towards the front LF than the portion 60A between the front-end cover 60La and the intermediate cover 60Lb in the left-side connecting cover section 65L.

[0067] Similarly, in the right-side connecting cover section 65R, the portion 60A between the intermediate cover 60Rb and the base-side cover 60Rc is located further forward LF than the portion 60A between the intermediate cover 60Rb and the base-side cover 60Rc in the left-side connecting cover section 65L.

[0068] Furthermore, as shown in Figure 3, the busbar holding member 5 of this embodiment is provided with a plurality of mounting portions 90 along the parallel direction L for attaching the harness housing portion 51 and the cover 60 to each other. The mounting portion 90 consists of a locking frame portion 91 provided on the side of the cover 60 and a locking projection portion 92 provided on the side wall portion 512 of the harness housing portion 51, which locks detachably to the locking frame portion 91.

[0069] Furthermore, as shown in Figures 3 to 5, the connecting structure 70 is interposed between the left connecting housing section 55L and the right connecting housing section 55R, which are arranged parallel to each other with a gap in the width direction W, and is also provided in each of the left connecting housing section 55L and the right connecting housing section 55R, spanning the portion (50A) between adjacent harness housing sections 51 in the parallel direction L. The connecting structure 70 is provided to connect adjacent harness housing sections 51 in the width direction W, and also to connect adjacent harness housing sections 51 in the parallel direction L. In other words, the busbar holding member 5 is equipped with two connecting structures 70. These two connecting structures 70 are formed to be identical in shape.

[0070] Figure 6 shows the main part along the line D1-D1 in Figure 3 with some dashed lines and a perspective cross-sectional view taken from the tip side LF and upper side HU with respect to the direction of the arrow along the line D1-D1. Figure 7 shows a perspective cross-sectional view of the movable connecting member 81 in Figure 6 with a partially fractured surface. Figure 8(a) shows a cross-sectional view showing the main part along the line D2-D2 in Figure 3. Figure 8(b) shows a cross-sectional view showing the main part along the line D3-D3 in Figure 8(a). Figure 9(a) is a perspective view of the movable connecting member 81 taken from the right side WR, base end side LB, and upper side HU. Figure 9(b) is a perspective view of the movable connecting member 81 taken from the left side WL, tip side LF, and lower side HD.

[0071] As shown in these drawings, the connecting structure 70 includes a pair of extensions 71 arranged at intervals in the parallel direction L, and a movable connecting member 81 which is separate from the extensions 71, spans the portion between the pair of extensions 71 in the parallel direction L, and connects each of the pair of extensions 71 so as to be movable in the parallel direction L.

[0072] The pair of extensions 71 are located on each side of the right-side connecting housing 55R and the left-side connecting housing 55L, separated by the portion (50A) between adjacent harness housings 51 in the parallel direction L. Since these pair of extensions 71 are arranged symmetrically with respect to the axis along the width direction W, the shape of the extension 71 will be described based on the extension 71 at the tip end LF of the pair of extensions 71. As shown in Figures 6, 7, and 8(a)(b), the extension portion 71 is integrally formed with the extension portion body 72, the widthwise extension projection portion 73, the retaining portion 74, the guide support portion 76, and the upward projection portion 77.

[0073] As shown in Figures 4 to 7 and Figure 8(b), the extension body 72 is formed in a flat plate shape extending in the width direction W and the parallel direction L, and as shown in Figures 4 to 6, except for the tip side LF in the parallel direction L, it is formed to be shorter than the distance in the width direction W between the left connecting housing 55L and the right connecting housing 55R.

[0074] As shown in Figures 4 to 7 and Figure 8(a), the base end LB of the extension body 72 is supported by a guide support 76 between a pair of harness housings 51 provided at both ends in the width direction W relative to the extension body 72.

[0075] As shown in Figures 6 and 8(b), the guide support portion 76 comprises a base portion 761 extending from a position below the extension portion body 72 toward the opposite side of the accommodation space S in the width direction W, and a tip portion 762 extending upward from the tip of the base portion 761, on the side wall portion 512 of a pair of harness accommodation portions 51 located on both sides in the width direction W relative to the extension portion 71. The upper end of the tip portion 762 of the guide support portion 76 is connected to the respective ends of the extension portion body 72 in the width direction W.

[0076] A guide groove 76S is formed in the gap in the width direction W between the tip portion 762 of the guide support portion 76 and the side wall portion 512 to which the base portion 761 of the guide support portion 76 is attached, allowing a guided projection 83, which will be described later and is provided on the movable connecting member 81, to be fitted in from above.

[0077] The widthwise extension projection 73 protrudes upward from the tip side LF portion of the extension body 72. The tip side LF portion of the extension body 72 is formed in the portion between the left connecting housing portion 55L and the right connecting housing portion 55R in the width direction W, and extends over the entire length of the portion between them in the width direction W.

[0078] In other words, the tip end LF portion of the extension body 72 is directly connected to the corresponding harness housing portion 51 at both ends in the width direction W relative to the extension 71, without the use of a guide support portion 76.

[0079] As shown in Figures 6, 7 and 8(a)(b), the extension portion 71 is provided with a retaining portion 74 on the outer side in the width direction W to hold down the movable connecting member 81. As shown in Figures 6 to 8(a), the retaining portion 74 comprises a base portion 741 that protrudes upward from the outer portion in the width direction W of the width extension projection portion 73, and a retaining portion body 742 that protrudes horizontally toward the tip side LF.

[0080] As shown in Figure 8(b), the distance in the height direction H between the lower surface of the retaining portion body 742 and the upper surface of the upper projection 77 is formed to be approximately the same as the thickness in the height direction H of the movable connecting member 81. The outer edge of the retaining portion 74 in the width direction W is integrally connected to the side wall portion 512 of the harness housing portion 51 which is adjacent in the width direction W.

[0081] As shown in Figures 6, 7, and 8(a)(b), an upward projection 77 is provided in the main body 72 of the extension section, approximately in the center of the base end LB in a plan view, relative to the widthwise extension projection 73, projecting upward relative to the periphery. As shown in Figures 6 and 8(b), the upward projection 77 extends linearly along the widthwise direction W.

[0082] As shown in Figures 6 and 8(a), the upper projection 77 of the extended portion 71 of the tip side LF is formed such that, in a cross-sectional view taken along the parallel direction L, the length of the projection of the portion 771 of the base end side LB toward the upper side HU gradually decreases toward the base end side LB. That is, an inclined guide surface 771a is formed on the upper surface of the portion 771 of the base end side LB of the upper projection 77, which is inclined so that its height decreases toward the base end side LB.

[0083] The upper projection 77 is made displaceable in the height direction H by forming the peripheral portion of the extension body 72 so as to be elastically deformable in the height direction H.

[0084] More specifically, as shown in Figures 5, 6 and 8(a)(b), a pair of parallel-extending grooves 791 extending in the parallel direction L are formed on both edges in the width direction W relative to the upper projection 77 of the extension body 72, and a width-extending groove 792 extending in the width direction W is formed on the edge of the tip side LF relative to the upper projection 77. The ends of the tip side LF of the pair of parallel-extending grooves 791 are connected by the width-extending groove 792.

[0085] As a result, the area around the upper projection 77 of the extension body 72 has an elastic tongue portion 78 that elastically deforms (bends) in the height direction H relative to the outer circumference of the extension body 72. The upper projection 77 provided on the upper surface of the elastic tongue portion 78 is displaceable in the height direction H as the elastic tongue portion 78 elastically deforms in the height direction H.

[0086] As shown in Figures 6 to 9(a) and 9(b), the movable connecting member 81 is formed of a plate-shaped connecting member body portion 82 that is substantially rectangular in plan view such that the length in the parallel direction L is longer than the length in the width direction W, guided projections 83 that protrude downward from both sides of the connecting member body portion 82 in the width direction W, stepped portions 84 that protrude downward from both ends of the connecting member body portion 82 in the parallel direction L, and a partition wall portion 85 that extends in the width direction W at an intermediate position in the parallel direction L and protrudes downward. As shown in Figure 8(b), the movable connecting member 81 is formed with a length in the width direction W that is shorter than the distance in the width direction W between the left connecting housing portion 55L and the right connecting housing portion 55R.

[0087] As shown in Figure 9(a), restrained portions 86 are formed at the four corners of the upper surface of the connecting member body portion 82, that is, at the positions corresponding to the four restraining portions 74 provided on the pair of extension portions 71 in a plan view. The restrained portions 86 are formed one step lower than the portions of the upper surface of the connecting member body portion 82 other than the four corners, and their upper surfaces are formed as flat horizontal surfaces.

[0088] As shown in Figures 6, 7, and 8(b), the guided projection 83 protrudes below the lower surface of the connecting member body 82 so as to be fitted into the guide groove 76S, and is formed linearly along the parallel direction L in the portion of the connecting member body 82 excluding both ends in the parallel direction L. As a result, the guided projection 83 is guided and supported by the guide support portion 76 so as to be movable along the parallel direction L when fitted into the guide groove 76S.

[0089] The stepped portion 84 extends along the width direction W between the restrained portions 86 provided on both sides of the connecting member body portion 82 in the width direction W.

[0090] As shown in Figures 7 and 9(a), of the stepped portions 84 that the connecting member body portion 82 has at both ends in the parallel direction L, the stepped portion 84 on the tip side LF is formed by a vertical wall portion 841 that descends from the tip side LF end of the extension portion body 72 and a protruding end portion 842 that extends from the lower end of the vertical wall portion 841 toward the tip side LF.

[0091] Similarly, of the stepped portions 84 that the connecting member body portion 82 has at both ends in the parallel direction L, the stepped portion 84 on the base end side LB is formed by a vertical wall portion 841 that descends from the end of the base end side LB of the extension portion body 72, and a protruding end portion 842 that extends from the lower end of the vertical wall portion 841 toward the base end side LB.

[0092] As shown in Figures 7 and 9(b), the partition wall portion 85 protrudes downward from an intermediate position in the parallel direction L of the connecting member body portion 82 and extends in the width direction W to connect the guided projections 83 on both sides in the width direction W. The partition wall portion 85 protrudes downward with approximately the same protrusion length as the guided projections 83 and is positioned between the pair of extended portions 71 in the parallel direction L.

[0093] In the extension portion 71, the restraining portion 74 and the upper projection portion 77 described above are positioned to sandwich the restrained portion 86 of the movable connecting member 81 from above and below, thereby restricting the movement of the movable connecting member 81 in the height direction H relative to the extension portion 71.

[0094] Furthermore, when, for example, the tip-side extension LF of the pair of extensions 71 moves from the state shown in Figure 8(a) to the base-side extension LB relative to the movable connecting member 81 as shown in Figure 10(a), the aforementioned partition wall portion 85 of the movable connecting member 81 interferes with the end of the base-side extension LB of the tip-side extension LF in the parallel direction L.

[0095] Similarly, when the extension portion 71 of the base end LB moves toward the tip end LF relative to the movable connecting member 81 from the state shown in Figure 8(a) to the state shown in Figure 10(a), the partition wall portion 85 interferes with the end of the tip end LF of the extension portion 71 of the base end LB in the parallel direction L.

[0096] In this way, the partition wall 85 restricts adjacent retaining member bodies 50 in the parallel direction L from moving in a direction that brings them closer to each other beyond a predetermined range. In this embodiment, the predetermined range described above is a range in which adjacent harness housings 51 in the parallel direction L can maintain their distance from each other without directly contacting each other when moving in a direction toward each other.

[0097] Furthermore, as shown in Figure 8(b), for example, when the extended portion 71 of the tip-side LF moves toward the tip-side LF beyond a predetermined range relative to the movable connecting member 81, the aforementioned upper projection 77 of the extended portion 71 of the tip-side LF interferes with the stepped portion 84 of the tip-side LF on the movable connecting member 81 in the parallel direction L.

[0098] Similarly, for example, when the extension portion 71 of the base end LB moves beyond a predetermined range toward the base end LB, the aforementioned upper projection 77 on the extension portion 71 of the base end LB interferes with the stepped portion 84 of the base end LB on the movable connecting member 81 in the parallel direction L. In this way, the upper projection 77 restricts adjacent retaining member bodies 50 from moving beyond a predetermined range in the direction that separates them from each other in the parallel direction L.

[0099] In this embodiment, the predetermined range mentioned above can be defined as the range in which the connection state by the movable connecting member 81 is not released when adjacent harness housings 51 in the parallel direction L move in a direction that separates them from each other, i.e., the range in which they do not separate from each other.

[0100] Furthermore, when adjacent harness housings 51 in the parallel direction L move apart from each other, they shall move within a range that can absorb the positional displacement in the parallel direction L caused by the thermal expansion of the battery cells 20.

[0101] As described above, each of the pair of extension sections 71 and the movable connecting member 81 are assembled to each other in a manner restricted by the height direction H and the parallel direction L. Next, an example of the assembly procedure between the tip-side extension section 71 LF of the pair of extension sections 71 and the movable connecting member 81 will be explained using Figures 11(a) and (b). Figure 11(a) is a cross-sectional view corresponding to Figure 8(a) showing the state immediately before assembly of the extension portion 71 of the tip-side LF and the movable connecting member 81, and Figure 11(b) is a cross-sectional view showing the state during assembly.

[0102] First, as shown in Figure 11(a), the extension portion 71 of the tip side LF and the movable connecting member 81 are arranged along the parallel direction L while separated from each other.

[0103] When the movable connecting member 81 is moved toward the tip-side LF extension portion 71, i.e., toward the tip-side LF, the guided projection 83 is inserted into the guide groove 76S (see Figure 6) from the base-side LB. As a result, the guided projection 83 of the movable connecting member 81 is supported by the guide support portion 76 of the tip-side LF extension portion 71.

[0104] Furthermore, when the movable connecting member 81 is moved toward the tip side LF, the stepped portion 84 of the tip side LF of the movable connecting member 81 comes into contact with the inclined guide surface 771a of the upper projection 77. As a result, a downward load component acts on the upper projection 77 via the inclined guide surface 771a. Therefore, as shown in Figure 10(b), the upper projection 77 can be lowered to a position where it does not come into contact with the stepped portion 84 of the tip side LF of the movable connecting member 81 in the parallel direction L due to the downward elastic deformation of the elastic tongue portion 78.

[0105] Thus, the movement of the movable connecting member 81 toward the tip side LF is not restricted by interference between the stepped portion 84 and the upper projection 77 of the movable connecting member 81 in the parallel direction L. Therefore, the movable connecting member 81 and the extended portion 71 of the tip side LF can be brought closer to each other without changing their relative position in the height direction H with respect to the movable connecting member 81.

[0106] Therefore, the movable connecting member 81 can be inserted from the base end LB to the tip end LF between the aforementioned retaining portion 74 and the upper projection 77 in the extended portion 71 of the tip end LF. Then, as described above, the movable connecting member 81 is positioned so that the retained portion 86 is sandwiched between the retaining portion 74 and the upper projection 77 (see Figures 8(a) and 8(b)), thereby restricting its movement in the height direction H.

[0107] Furthermore, as shown in Figures 8(a) and 8(b), when the stepped portion 84 of the movable connecting member 81 is moved towards the tip side LF beyond the upper projection 77, the elastic tongue portion 78 is released from the downward pressure on the upper projection 77 by the stepped portion 84, and can therefore restore the upper projection 77 to its original position by its own restoring force. As a result, the extended portion 71 of the tip-side LF and the movable connecting member 81 can be assembled together, as shown in Figures 8(a) and 8(b). The extension portion 71 of the base end LB and the movable connecting member 81 can be assembled to each other in the same manner as the assembly procedure described above for the extension portion 71 of the tip end LF and the movable connecting member 81. By assembling the movable connecting member 81 to each of the pair of extension portions 71 in this manner, the harness housing portions 51 adjacent to each other in the parallel direction L can be movably connected via the connecting structure 70.

[0108] The busbar holding member 5 of this embodiment described above can provide the following effects. As shown in Figures 3 to 8, in this embodiment, the busbar holding member 5 has extensions 71 provided on each of the holding member bodies 50, which are arranged adjacent to each other in the parallel direction L, and these extensions 71 are connected to each other via a movable connecting member 81 so that they can move in the parallel direction L. Therefore, the conductive member 3 held by the busbar holding member 52 can move in the parallel direction L to follow the positional displacement in the parallel direction L caused by the thermal expansion of the battery cell 20. Therefore, even if multiple battery cells 20 undergo thermal expansion in the parallel direction L, a good connection between the conductive member 3 and the battery cells 20 can be maintained.

[0109] In addition to the effects described above, the busbar holding member 5 of this embodiment can provide the following effects. As shown in Figures 3 to 9, in this embodiment, the busbar holding member 5 has a movable connecting member 81 that is formed as a separate member from the extension portion 71 provided on each of the holding member bodies 50 adjacent to each other in the parallel direction L. Compared to the case where the movable connecting member 81 is integrally formed with respect to the extension portion 71, the structure of the holding member body 50 can be simplified, and it becomes easier to form multiple holding member bodies 50 with the same shape.

[0110] Furthermore, in this embodiment, the busbar holding members 5 are connected to each other via movable connecting members 81, as adjacent holding member bodies 50 in the parallel direction L are connected to each other. This increases their unity, making them easy to carry and easy to attach to the battery unit 2.

[0111] Furthermore, as shown in Figures 3 to 7 and Figure 8(b), the busbar holding member 5 of this embodiment is configured to connect a pair of harness housing sections 51 in the width direction W by an extended portion 71 that forms part of the connecting structure 70. This enhances the unity of a pair of adjacent harness housing sections 51 in the width direction W, and also makes it easier to install the connecting structure 70 between the pair of harness housing sections 51 in the width direction W.

[0112] Furthermore, by providing the connecting structure 70 between the widthwise W of the pair of harness housings 51, when moving a pair of adjacent harness housings 51 in the parallel direction L via the connecting structure 70, the left and right harness housings 51 can be moved in a balanced manner.

[0113] Furthermore, the extension 71 is not only provided as part of a connecting structure 70 that connects adjacent harness housings 51 in the parallel direction L, but also serves to connect a pair of harness housings 51 arranged in the width direction W, thus simplifying the configuration.

[0114] Furthermore, as shown in Figures 3, 6, 7, and 8(a)(b), the extension portion 71 of this embodiment is equipped with a restraining portion 74 and an upper projection 77 that clamp the restrained portion 86 of the movable connecting member 81 from both the upper and lower sides, thereby restricting the movement of the movable connecting member 81 in the height direction H relative to the extension portion 71. Therefore, when adjacent holding member bodies 50 in the parallel direction L are moved relative to each other along the parallel direction L via the movable connecting member 81, they can be moved smoothly relative to each other without unintentionally moving in the height direction H.

[0115] Furthermore, as shown in Figure 10(a), in this embodiment, the busbar holding member 5 has a partition wall portion 85 provided on the movable connecting member 81, which is interposed between adjacent holding member bodies 50 in the parallel direction L. This restricts the movement of adjacent holding member bodies 50 until they come into contact with each other when they move in a direction that brings them closer together. This prevents adjacent holding member bodies 50 from tilting or being damaged by contacting each other.

[0116] Furthermore, in this embodiment, the busbar holding member 5 can be configured more simply than when adjacent holding member bodies 50 are restricted from directly contacting each other in the parallel direction L by a common partition wall portion 85 between adjacent holding member bodies 50.

[0117] Furthermore, as shown in Figure 10(b), the busbar holding member 5 of this embodiment can restrict adjacent extensions 71 from moving beyond a predetermined range in the parallel direction L, due to interference between the stepped portion 84 and the upper projection 77. This prevents the connection between adjacent extensions 71 via the movable connecting member 81 from being unintentionally released.

[0118] Furthermore, in this embodiment, even when the movable connecting member 81 is restricted from moving in the height direction H relative to the extended portion 71, the busbar holding member 5 can, as shown in Figure 11(b), elastically displace the upper projection 77 downward to a position where it does not interfere with the stepped portion 84 in the parallel direction L. This prevents the upper projection 77 from getting in the way, and allows the stepped portion 84 to be positioned closer to the widthwise extending projection 73 than the upper projection 77.

[0119] Furthermore, by returning the elastically displaced upper projection 77 to its original position, the stepped portion 84 can be kept positioned closer to the widthwise extending projection 73 than the upper projection 77, thus allowing the extended portion 71 and the movable connecting member 81 to be assembled. In other words, the holding member bodies 50 can be connected to each other via the movable connecting member 81.

[0120] Furthermore, as shown in Figures 1 to 5, in this embodiment, the busbar holding member 5 has lower rigidity in the portion 50A between adjacent holding member bodies 50 in the parallel direction L compared to other parts in the parallel direction L. However, by making the position of this portion 50A different between the left and right pair of connecting housing portions 55, the overall bending rigidity can be ensured.

[0121] In the correspondence between the configuration of this invention and the embodiments described above, the busbar corresponds to the conductive member 3, and so on. The harness is compatible with wire harness 4. The battery corresponds to battery cell 20, The movement restricting portion corresponds to the retaining portion 74 and the upper projection portion 77, The parallel direction restricting portion corresponds to the upper projection portion 77 or the partition portion 85, The parallel directional restricting section, positioned between the extended sections, corresponds to the partition wall section 85. The orthogonal direction perpendicular to the width direction and parallel direction corresponds to the height direction H. The direction intersecting the parallel direction corresponds to the width direction W. However, this invention is not limited to the configuration of the above-described embodiment, and many other embodiments can be obtained.

[0122] For example, the busbar holding member 5 of this embodiment includes a restraining portion 74 and an upper projection 77 as movement restricting portions that restrict the movement of the movable connecting member 81 in the height direction H relative to the extended portion 71, a partition portion 85 as a parallel direction restricting portion that restricts adjacent holding member bodies 50 from coming close enough to directly contact each other, and an upper projection 77 that can interfere with the stepped portion 84 as a parallel direction restricting portion that restricts adjacent holding member bodies 50 from moving apart until they are separated from each other. However, the busbar holding member of the present invention is not limited to the configuration of the embodiment described above, and may have a configuration that includes at least one of these restricting portions.

[0123] Furthermore, when the pair of extensions 71 move in a direction that brings them closer to each other in the parallel direction L, the means for restricting them from getting any closer to each other is not limited to the means by which the pair of extensions 71 interfere with the partition wall portion 85 of the movable connecting member 81, as in this embodiment, but other means may also be employed.

[0124] For example, when the extended portion 71 of the tip-side LF moves toward the base-side LB relative to the movable connecting member 81 beyond a predetermined range, the stepped portion 84 and the widthwise extending projection 73 of the tip-side LF of the movable connecting member 81 may interfere in the parallel direction L, thereby restricting further movement toward each other.

[0125] Furthermore, the movable connecting member of the present invention is not limited to a configuration in which it is movably connected to each of a pair of adjacent extensions 71 in the parallel direction L, as in the movable connecting member 81 of this embodiment, but may also be configured to be movably connected to either one of the extensions 71 in the parallel direction L.

[0126] Furthermore, although the busbar holding member 5 of this embodiment is provided with three harness housing sections 51 arranged along the parallel direction L in each of the left and right connecting housing sections 55, the busbar holding member of the present invention is not limited to this, and may be configured to have more than three harness housing sections 51. [Explanation of symbols]

[0127] 1…Battery module 2…Battery unit 3… Conductive member 4…Wire harness 5…Bus bar retaining member 20…Battery cells 52...Bus bar holder 51...Harness housing 50…Main body of the retaining member 50A... The portion between adjacent holding member bodies in a parallel direction 70…Connection structure 71…Extension part 74... Suppressor 77...Upper protrusion 81...Movable connecting member 84... Stepped section 85...Bulkhead part L…Parallel direction W...Width direction H...height direction

Claims

1. A busbar holding member for holding a busbar attached to a battery unit in which multiple batteries are arranged in parallel, A plurality of holding member bodies comprising a busbar holding portion for holding the busbar electrically connected to the battery, and a harness housing portion for housing a harness electrically connected to the busbar and extending in the parallel direction, The holding member bodies, which are arranged in a plurality along the parallel direction, have a connecting structure that connects adjacent harness housing portions in the parallel direction, The aforementioned connecting structure is The holding member body includes an extended portion provided in a direction intersecting the parallel direction, A movable connecting member is provided, which is composed separately from the aforementioned extension portion, straddles the space between the aforementioned extension portions arranged in the parallel direction, and is movably connected to at least one of the aforementioned extension portions in the parallel direction. The holding member body is arranged in pairs in the width direction perpendicular to the parallel direction, with the axis along the parallel direction as the axis of symmetry. The extension connects the pair of harness housing sections in the width direction. Busbar retaining member.

2. At least one of the extension portion and the movable connecting member, The movable connecting member has a movement restricting section that restricts the movement of the movable connecting member relative to the extended section in a direction perpendicular to the width direction and the parallel direction. The busbar holding member according to claim 1.

3. A parallel direction restricting portion is provided with respect to the movable connecting member, which restricts the holding member body from moving beyond a predetermined range in the parallel direction. The busbar holding member according to claim 2.

4. The movable connecting member is configured to be movable in the parallel direction to each of the extensions arranged in the parallel direction. The parallel direction restricting unit is, It is provided in the central portion of the movable connecting member in the parallel direction and is positioned between the extended portions. The busbar holding member according to claim 3.

5. The movable connecting member is provided with stepped portions at both ends in the parallel direction, The parallel direction restricting unit is, In the extension portion, the movable connecting member, which is arranged to straddle adjacent extension portions, is provided on the side of the extension portion adjacent to the step portion, and protrudes toward the movable connecting member, The stepped portion and the parallel direction restricting portion interfere with each other, restricting movement beyond a predetermined range in the direction that separates the holding member bodies. The busbar holding member according to claim 3.

6. The extended portion is formed to be elastically deformable in the orthogonal direction. The busbar holding member according to claim 5.

7. The connecting structure is provided with a parallel direction restricting portion that restricts the holding member body from moving beyond a predetermined range in the parallel direction relative to the movable connecting member. The busbar holding member according to claim 1.

8. The portion between adjacent retaining member bodies in the parallel direction is positioned differently between the pair of retaining member bodies. The busbar holding member according to claim 1.

9. Multiple batteries arranged in parallel, A busbar electrically connected to the aforementioned battery, A plurality of busbar holding members that hold the busbar, The busbar and the harness are electrically connected to each other. The busbar holding member is A plurality of retaining member bodies, each having a busbar retaining portion for holding the busbar and a harness housing portion for housing the harness, The batteries are arranged in parallel along the parallel direction, and the harness housings are arranged to connect adjacent to each other. The aforementioned connecting structure is An extension portion provided in a direction intersecting the parallel direction of the holding member body, A movable connecting member is provided, which is composed separately from the aforementioned extension portion, straddles the space between the aforementioned extension portions arranged in the parallel direction, and connects to the aforementioned extension portion. The extended portions are configured to move within a predetermined range along the movable connecting member. The holding member body is arranged in pairs in the width direction perpendicular to the parallel direction, with the axis along the parallel direction as the axis of symmetry. The extension connects the pair of harness housing sections in the width direction. Battery module.

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