Wiring module

Abstract

A wiring module (20) is assembled to a battery stack (11L) in an assembly direction orthogonal to a plate thickness direction of a bonding portion (13), the battery stack (11L) being configured by stacking a plurality of laminated batteries (11) provided with electrode leads (12), the battery stack (11L) being provided with the bonding portion (13) in which the electrode leads (12) of the laminated batteries (11) overlap each other and are bonded, the wiring module (20) being provided with: a terminal (30); an electric wire (45) connected to the terminal (30); and a protector (50) that holds the terminal (30) and the electric wire (45), the protector (50) being provided with: a terminal housing part (56) that houses the terminal (30); and a protector-side engagement section (64) that holds the terminal (30) so as to be movable in the plate thickness direction between a first position and a second position disposed on one side in the plate thickness direction of the first position with respect to the terminal housing section (56), the electrode lead constituting the joint section (13) among the electrode leads (12) being a joint electrode lead (12A), the terminal (30) being provided with: an electrode connection section (31) that connects the electrode lead (12) to the joint section (13); an electrode lead (12A) electrically connected to the bonding electrode lead (12A); an inclined surface (32) which is provided so as to be continuous with the electrode connection part (31), and which is inclined so as to be closer to the depth side in the assembly direction to be closer to one side in the plate thickness direction; and a terminal-side engagement section (33) that engages with the protector-side engagement section (64), and in a state in which the terminal (30) is disposed at the first position, the inclined surface (32) is disposed so as to include a range (WT) in which the joining electrode lead (12A) can be disposed in the plate thickness direction.

Description

Technical Field

[0001] The present disclosure relates to a wiring module. Background Art

[0002] High-voltage battery packs used in electric vehicles, hybrid vehicles, etc. are usually stacked with multiple single cells, which are electrically connected in series or in parallel through wiring modules. As such a wiring module, the wiring module described in Japanese Patent Publication No. 2020-527848 (hereinafter referred to as Patent Document 1) is known in the past. The battery module described in Patent Document 1 comprises: a single cell assembly, which is formed by stacking a plurality of single cells with electrode leads at the front and rear ends in the left and right direction; a module housing, which is configured to accommodate the single cell assembly in an internal space formed by four side walls on the top, bottom, left and right sides; and an end frame, which is assembled in front and behind the single cell assembly and connects the single cell assembly to external devices.

[0003] [Prior art literature]

[0004] [Patent Document]

[0005] Patent Document 1: Japanese Patent Application No. 2020-527848 Summary of the invention

[0006] [Problems to be Solved by the Invention]

[0007] In the above structure, the cell assembly has a portion where the electrode leads of adjacent cells are bent and overlapped in a manner close to each other and electrically connected, so there is no need to provide a bus bar for connecting the electrode leads. The electrode leads are electrically connected to the module terminals provided on the end frame. However, in the portion where the electrode leads are connected to each other, due to the bending process of the electrode leads and the welding of the electrode leads to each other, large manufacturing tolerances are likely to occur, especially in the front-to-back direction.

[0008] When the end frame is moved downward from above and assembled into the above-mentioned cell assembly, the module terminal and the electrode lead may interfere with each other due to manufacturing tolerances in the front-rear direction of the electrode lead, thereby possibly damaging the module terminal or the electrode lead.

[0009] [Means for solving the problem]

[0010] The wiring module of the present disclosure is assembled to a battery stack in an assembly direction orthogonal to the plate thickness direction of the joint portion, wherein the battery stack is formed by stacking a plurality of laminated batteries having electrode leads, and the electrode leads of the laminated batteries are overlapped and joined to each other, wherein the wiring module comprises: a terminal; an electric wire connected to the terminal; and a protector for holding the terminal and the electric wire, wherein the protector comprises: a terminal storage portion for storing the terminal; and a protector-side snap-fit ​​portion for holding the terminal so as to be movable relative to the terminal storage portion between a first position and a second position in the plate thickness direction. , the second position is arranged on one side in the plate thickness direction of the first position, and the electrode lead constituting the joining portion in the electrode lead is set as a joining electrode lead, and the terminal comprises: an electrode connecting portion, which is electrically connected to the joining electrode lead; an inclined surface, which is arranged in connection with the electrode connecting portion and is inclined in a manner that the closer it is to the depth side in the assembly direction, the closer it is to one side in the plate thickness direction; and a terminal side snap-in portion, which is snap-in with the protector side snap-in portion, and when the terminal is arranged at the first position, the inclined surface is arranged to include a range of positions in the plate thickness direction where the joining electrode lead can be arranged.

[0011] [Effects of the invention]

[0012] According to the present disclosure, it is possible to provide a wiring module that can be assembled to a battery stack without interfering between terminals and electrode leads. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a perspective view of the power storage module according to the first embodiment.

[0014] Figure 2 This is a front view of the power storage module.

[0015] Figure 3 It is an enlarged front view of the power storage module showing the periphery of the terminal housing portion.

[0016] Figure 4 This is a rear view of the power storage module.

[0017] Figure 5 This is an enlarged perspective view of the power storage module showing the periphery of the terminal housing portion.

[0018] Figure 6 It is an enlarged perspective view of the protector showing the periphery of the terminal housing portion.

[0019] Figure 7 This is a three-dimensional diagram of the terminal.

[0020] Figure 8 It is a perspective view of a battery stack.

[0021] Fig. 9 This is a diagram showing a state where the wiring module is assembled to the battery stack along the assembly direction.

[0022] Fig.10 yes Figure 2 AA section view.

[0023] Fig.11 It is shown in Figure 3 FIG. 1 is a diagram showing a state in which the end portion of the joined electrode lead is located on the deep side in the assembly direction relative to the inclined surface in the BB cross section.

[0024] Fig.12 It is shown in Figure 3 A diagram showing a state in which the end portion of the bonding electrode lead is engaged with the inclined surface in the BB cross section.

[0025] Fig.13 yes Figure 3 BB cross-sectional view.

[0026] Fig.14 yes Figure 3 CC cross-sectional view.

[0027] Fig.15 yes Figure 3 DD cross-sectional view.

[0028] Fig.16 yes Fig.11 EE cross-sectional view.

[0029] Fig.17 It is shown in Figure 3 A diagram showing a state in which the end of the bonding electrode lead is located on the depth side in the assembly direction relative to the terminal protection sheet when the bonding electrode lead is arranged on the terminal protection sheet side relative to the range of positions where the bonding electrode lead can be arranged in the plate thickness direction in the BB section.

[0030] Fig.18 It is shown in Figure 3 A diagram showing a state in which the bonding electrode lead is connected to the electrode connecting portion when the bonding electrode lead is arranged closer to the terminal protection sheet than the range of positions where the bonding electrode lead can be arranged in the plate thickness direction in the BB cross section.

[0031] Fig.19 It is shown in Figure 3 A diagram showing a state in which the end of the bonding electrode lead is located on the deep side in the assembly direction relative to the inclined surface when the bonding electrode lead is arranged on the inclined surface side relative to the range of positions where the bonding electrode lead can be arranged in the plate thickness direction in the BB cross section.

[0032] Fig. 20 It is shown in Figure 3A diagram showing a state in which the bonding electrode lead is connected to the electrode connecting portion when the bonding electrode lead is arranged on the inclined surface side relative to the range of positions where the bonding electrode lead can be arranged in the plate thickness direction in the BB cross section.

[0033] Fig.21 This is an enlarged front view of the power storage module showing the periphery of the terminal housing portion according to the second embodiment.

[0034] Fig. 22 It shows that Fig.21 A diagram showing a state in which a bonding electrode lead with an outer side of a bonding portion bent in the FF cross section is assembled to a wiring module. DETAILED DESCRIPTION

[0035] [Description of Embodiments of the Present Disclosure]

[0036] First, embodiments of the present disclosure will be described below.

[0037] (1) The wiring module of the present disclosure is assembled to a battery stack in an assembly direction orthogonal to the plate thickness direction of the joint portion, the battery stack being formed by stacking a plurality of laminated batteries having electrode leads, and the joint portion being formed by overlapping and joining the electrode leads of the laminated batteries, wherein the wiring module comprises: a terminal; an electric wire connected to the terminal; and a protector for holding the terminal and the electric wire, the protector comprising: a terminal receiving portion for receiving the terminal; and a protector-side engaging portion for holding the terminal so that the terminal can be held relative to the terminal receiving portion between a first position and a second position in the plate thickness direction. Move, the second position is configured on one side of the first position in the plate thickness direction, the electrode lead constituting the joining portion in the electrode lead is set as a joining electrode lead, and the terminal comprises: an electrode connecting portion, which is electrically connected to the joining electrode lead; an inclined surface, which is arranged in connection with the electrode connecting portion and is inclined in a manner that the closer it is to the depth side in the assembly direction, the closer it is to one side in the plate thickness direction; and a terminal side snap-in portion, which is snap-fitted with the protector side snap-in portion, and when the terminal is configured in the first position, the inclined surface is configured to include a range of positions in the plate thickness direction where the joining electrode lead can be configured.

[0038] According to such a structure, when the wiring module is assembled to the battery stack, the inclined surface engages with the end of the bonding electrode lead on the front side in the assembly direction, so that the terminal can move relative to the bonding electrode lead in the plate thickness direction, thereby suppressing interference between the terminal and the bonding electrode lead.

[0039] (2) Preferably, the terminal housing portion includes a terminal protection sheet, which is arranged opposite to the electrode connecting portion in the plate thickness direction, and the inclined surface is inclined in a manner that the closer it is to the depth side in the assembly direction, the farther away from the terminal protection sheet, and the bonding electrode lead is arranged between the electrode connecting portion and the terminal protection sheet in the plate thickness direction.

[0040] According to such a structure, the terminal can be protected by the terminal protection sheet. In addition, the bonding electrode lead arranged between the electrode connection portion and the terminal protection sheet can be protected.

[0041] (3) Preferably, a protector-side inclined surface is provided at an end portion of the terminal protection piece on the deep side in the assembly direction, and the protector-side inclined surface is inclined so as to be located on the other side in the plate thickness direction as it approaches the deep side in the assembly direction.

[0042] According to such a configuration, even when the bonding electrode lead is arranged on the terminal protection sheet side beyond the range of the position where the bonding electrode lead can be arranged in the plate thickness direction, the bonding electrode lead can be easily arranged between the electrode connecting portion and the terminal protection sheet.

[0043] (4) Preferably, a direction perpendicular to the plate thickness direction and the assembly direction is defined as a terminal width direction, and a dimension of the inclined surface in the terminal width direction is smaller than a dimension of the electrode connecting portion in the terminal width direction.

[0044] According to such a structure, the work of electrically connecting the electrode connecting portion and the bonding electrode lead can be easily performed.

[0045] (5) Preferably, the inclined surface is arranged at a central position of the electrode connecting portion in the terminal width direction, the electrode connecting portion is connected to the inclined surface via a trapezoidal portion, the dimension of the trapezoidal portion in the terminal width direction decreases as it approaches the depth side in the assembly direction, the trapezoidal portion has a shape symmetrical with respect to the terminal width direction, and the dimension of the end of the trapezoidal portion on the depth side in the assembly direction in the terminal width direction is set to be the same as the dimension of the inclined surface in the terminal width direction.

[0046] According to such a configuration, interference between the bonding electrode lead and the electrode connecting portion outside the inclined surface in the terminal width direction can be suppressed.

[0047] (6) Preferably, the terminal housing portion includes a locking portion that prevents the terminal from falling out of the terminal housing portion in the plate thickness direction.

[0048] According to such a configuration, it is possible to suppress the terminal from coming off the terminal housing portion.

[0049] (7) Preferably, the terminal housing portion includes: a first displacement suppressing portion suppressing displacement of the terminal in the assembling direction; and a second displacement suppressing portion suppressing displacement of the terminal in a terminal width direction orthogonal to the plate thickness direction and the assembling direction.

[0050] According to such a structure, the terminal can be positioned relative to the terminal housing portion in the assembly direction and the terminal width direction.

[0051] (8) Preferably, the terminal-side engaging portion is plate-shaped and arranged perpendicular to the joint portion, and the protector-side engaging portion abuts against the rear side and the front side of the terminal-side engaging portion in the assembling direction, thereby also serving as the first displacement suppressing portion.

[0052] According to such a structure, the terminal side snap-in portion is in a plate shape perpendicular to the joint portion, so when the wiring module is assembled to the battery stack, the force applied to the terminal is easily dispersed in the assembly direction. In addition, because the protector side snap-in portion also serves as the first displacement suppression portion, the structure of the terminal storage portion becomes simple.

[0053] (9) Preferably, the protector includes a protector body, and the terminal housing portion is coupled to the protector body via a hinge portion so as to be freely floating.

[0054] According to such a configuration, even when the bonding electrode lead is arranged outside the range of positions where the bonding electrode lead can be arranged in the plate thickness direction, the bonding electrode lead can be easily arranged between the electrode connecting portion and the terminal protection sheet.

[0055] [Details of Embodiments of the Present Disclosure]

[0056] Hereinafter, embodiments of the present disclosure will be described. The present disclosure is not limited to these examples, but is indicated by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0057] <Implementation Method 1>

[0058] Reference Figures 1 to 20 Embodiment 1 of the present disclosure is described. The power storage module 10 having the wiring module 20 of the present embodiment is mounted on a vehicle such as an electric vehicle or a hybrid vehicle, and is used as a driving source of the vehicle. In the following description, for a plurality of identical components, sometimes only a part of the components are marked with reference numerals, and the reference numerals of the other components are omitted. In the following description, the direction indicated by the arrow line X is regarded as the bottom, the direction indicated by the arrow line Y is regarded as the left, and the direction indicated by the arrow line Z is regarded as the front.

[0059] [Battery stack]

[0060] The power storage module 10 includes Figure 8 The battery stack 11L shown in FIG. Fig. 9 The wiring modules 20 are assembled on the front and rear sides of the battery stack 11L. Figure 1 and Fig. 9 As shown, the power storage module 10 of this embodiment further includes a housing 14 that covers the battery stack 11L from four directions, top, bottom, left and right. The housing 14 is composed of a bottom 15 arranged on the lower surface side of the battery stack 11L, a top 16 arranged on the upper surface side of the battery stack 11L, and a pair of side portions 17 connecting the bottom 15 and the top 16 on the left and right sides.

[0061] [Assembly direction]

[0062] like Fig. 9 As shown, the wiring module 20 of this embodiment is assembled along the assembly direction (the direction indicated by the arrow line X) with respect to the battery stack 11L accommodated in the housing 14 (details will be described later). In this specification, for convenience, the direction indicated by the arrow line X is unified as downward, and the assembly direction is described as downward, but for example, the battery stack 11L and the wiring module 20 may be arranged in such a way that the assembly direction is forward or left. In addition, when the wiring module 20 is assembled to the battery stack 11L and when the power storage module 10 is used, the direction corresponding to the direction indicated by the arrow X in the specification (the width direction of the electrode lead 12) may be different.

[0063] [Laminated batteries, electrode leads]

[0064] like Figure 8 As shown, the battery stack 11L is formed by stacking a plurality of laminated batteries 11 in the left-right direction (eight in this embodiment). The laminated battery 11 is long in the front-to-back direction and flat in the left-to-right direction. An electric storage element (not shown) is accommodated inside the laminated battery 11. A pair of electrode leads 12 are arranged on both sides of the laminated battery 11 in the front-to-back direction, protruding in opposite directions to each other. The pair of electrode leads 12 are plate-shaped and have opposite polarities to each other.

[0065] [Jointing part, joining electrode lead, plate thickness direction, terminal width direction]

[0066] like Figure 8As shown, the battery stack 11L is provided with a joint 13 for electrically connecting the electrode leads 12 of the adjacent laminated batteries 11. That is, the electrode leads 12 are bent to the left or right at a right angle and overlapped, and joined by laser welding, thereby forming the joint 13. The plate thickness direction (the direction of the arrow Z) of the joint 13 is set as the front-back direction. The direction orthogonal to the plate thickness direction and the assembly direction of the joint 13 is set as the terminal width direction (in the embodiment, the direction of the arrow line Y and the left-right direction). The electrode lead constituting the joint 13 among the electrode leads 12 is set as the joint electrode lead 12A.

[0067] The formation process of the joint 13 includes bending processing, laser welding, etc. of the electrode lead 12, so the tolerance of the joint 13 (and the joint electrode lead 12A) in the plate thickness direction is likely to be large. For example, in this embodiment, the tolerance of the joint 13 (and the joint electrode lead 12A) in the plate thickness direction is greater than the thickness of the electrode lead 12.

[0068] like Figure 8 As shown, the electrode leads 12 other than the bonding electrode lead 12A, that is, the electrode leads that do not constitute the bonding portion 13, are end electrode leads 12B. The end electrode leads 12B are arranged at both ends of the battery stack 11L and protrude forward. The end electrode leads 12B constitute the positive electrode or negative electrode of the entire battery stack 11L.

[0069] [Wiring module]

[0070] like Figure 2 As shown, the wiring module 20 of this embodiment includes a terminal 30 connected to the bonding electrode lead 12A, a bus bar 40 connected to the end electrode lead 12B, an electric wire 45 connected to the terminal 30 or the bus bar 40, and a protector 50 for holding the terminal 30, the bus bar 40, and the electric wire 45. The structure of the wiring module 20 arranged on the front side of the battery stack 11L is described in detail below. Figure 4 As shown, the wiring module 20 disposed on the rear side of the battery stack 11L has the same configuration as the wiring module 20 disposed on the front side of the battery stack 11L except that the bus bar 40 is not included.

[0071] [Protector]

[0072] like Figure 1 As shown, the protector 50 is made of insulating synthetic resin and is plate-shaped. The protector 50 includes a protector body 51 positioned relative to the housing 14 (and the battery stack 11L). The detailed structure is omitted, and the protector body 51 and the housing 14 have concave and convex shapes extending in the assembly direction and engaging with each other, guiding the assembly of the wiring module 20 relative to the battery stack 11L.

[0073] like Figure 2 As shown, in the center of the protector body 51 in the vertical direction, electrode receiving parts 54 are arranged in parallel in the left-right direction. The electrode receiving parts 54 are formed through the front-to-back direction and are rectangular in shape and are long in the vertical direction. The electrode receiving parts 54 are composed of a bonding electrode receiving part 54A that receives the bonding part 13 and the bonding electrode lead 12A, and an end electrode receiving part 54B that receives the end electrode lead 12B. Fig.10 As shown, the lower side of the electrode receiving portion 54 is also open downward, so that the electrode lead 12 does not interfere with the electrode receiving portion 54 when the wiring module 20 is assembled.

[0074] like Figure 2 As shown, bus bar holding portions 55 for holding the bus bar 40 are provided on the upper and lower sides of the end electrode receiving portion 54B. Bolt fastening portions 55A for fastening the bus bar 40 with bolts are provided near the upper bus bar holding portion 55. Figure 6 As shown in FIG. 1 , a terminal receiving portion 56 for receiving the terminal 30 is provided on the upper side of the joint electrode receiving portion 54A. The terminal receiving portion 56 is coupled to the protector body 51 via a hinge portion 57 .

[0075] In the following description, refer to Figures 11 to 14 as well as Figures 17 to 20 In the figure, for ease of viewing, the joint portion 13 (joining electrode lead 12A), the terminal 30 , the terminal receiving portion 56 , the hinge portion 57 , etc. including the cross section are shown, and the background of a part of the end electrode lead 12B, the bus bar 40 , etc. is omitted.

[0076] [Hinged part]

[0077] like Fig.17 As shown in the figure, the hinge part 57 includes a protruding piece 58 protruding forward from the protector body 51 and an extension piece 59 extending from the protruding piece 58 to the deep side (downward) in the assembly direction and connected to the terminal receiving part 56. The hinge part 57 includes a thin-walled part 60 thinner than the surrounding in the plate thickness direction at the joint part between the terminal receiving part 56 and the extension piece 59, the joint part between the extension piece 59 and the protruding piece 58, and the joint part between the protruding piece 58 and the protector body 51. The thin-walled part 60 is formed in a U-shaped groove shape when viewed from the side, and extends in the left and right direction. The thin-walled part 60 provided at the joint part between the terminal receiving part 56 and the extension piece 59 and the joint part between the extension piece 59 and the protruding piece 58 is set as a first thin-walled part 60A. The thin-walled part 60 provided at the joint part between the protruding piece 58 and the protector body 51 is set as a second thin-walled part 60B. The first thin-walled part 60A is formed thinner than the second thin-walled part 60B.

[0078] like Fig.18 and Fig. 20As shown, when a force is applied to the terminal receiving portion 56, the thin-walled portion 60 functions as a fold, so that the hinge portion 57 can be bent and deformed. That is, the hinge portion 57 is deformed, so that the terminal receiving portion 56 floats freely relative to the protector body 51. As described later, the hinge portion 57 is bent particularly at the first thin-walled portion 60A, which is thin, so that it is easy to deform.

[0079] [Terminal storage section]

[0080] like Figure 6 As shown, the terminal storage portion 56 includes: a tube storage recess 61, which is connected to the hinge portion 57; a terminal protection piece 62, which is arranged on the deep side in the assembly direction; and a central frame portion 63, which is arranged between the tube storage recess 61 and the terminal protection piece 62. The tube storage recess 61 extends along the assembly direction and is in the shape of a door that is recessed toward the rear. Figure 5 As shown, the wire barrel portion 35A, the insulating barrel portion 35B of the terminal 30 , and a part of the electric wire 45 are housed in the barrel housing recess 61 .

[0081] [Terminal protection sheet]

[0082] like Fig.11 As shown, the terminal protection piece 62 is a plate-shaped member, which is arranged behind the electrode connection part 31 of the terminal 30. The terminal protection piece 62 extends downward from the lower end of the central frame part 63 and is slightly inclined forward. A protector side inclined surface 62A is provided at the lower end of the terminal protection piece 62, and the protector side inclined surface 62A is inclined in a manner that the closer it is to the bottom, the more it is located at the rear side. The terminal protection piece 62 near the upper end of the protector side inclined surface 62A is formed into a rear locking portion 62B that can abut against the electrode connection part 31, thereby preventing the terminal 30 from shifting backward.

[0083] like Fig.14 and Fig.16 As shown, a protector side engaging portion 64 is provided inside the central frame portion 63, and the protector side engaging portion 64 holds the terminal 30 so as to be movable in the front-rear direction relative to the terminal receiving portion 56. The protector side engaging portion 64 is composed of a lower side abutting portion 64A and an upper side abutting portion 64B which are arranged at intervals in the up-down direction. The lower side abutting portion 64A is arranged in a manner of abutting against the center of the terminal side engaging portion 33 of the terminal 30 in the left-right direction from the lower side. The upper side abutting portion 64B is arranged in a manner of abutting against both ends of the terminal side engaging portion 33 in the left-right direction from the upper side. Therefore, the protector side engaging portion 64 also serves as a first displacement suppressing portion 65 that suppresses displacement of the terminal 30 in the up-down direction.

[0084] like Fig.14As shown in the figure, a locking protrusion 66 protruding downward is provided at the front side portion of the upper side abutment portion 64B. The locking protrusion 66 has: a locking surface 66A, which is inclined in a manner that the closer to the rear, the lower it is; and a front locking portion 66B, which is arranged perpendicular to the terminal side locking portion 33 and serves as the rear end surface of the locking protrusion 66. By sliding the rear end portion of the terminal side locking portion 33 relative to the locking surface 66A, the terminal 30 can be easily accommodated in the terminal accommodating portion 56. The front locking portion 66B is locked to the front end portion of the terminal side locking portion 33, thereby preventing the terminal 30 from shifting forward.

[0085] By the front locking portion 66B (see Fig.14 ) and the rear locking portion 62B (refer to Fig.11 ) constitutes a locking portion 67 that prevents the terminal 30 from falling off from the terminal receiving portion 56 in the front-to-back direction.

[0086] like Figure 6 As shown in FIG. 1 , a second displacement suppressing portion 68 is provided in a cutout shape on the lower wall portion of the central frame portion 63. Figure 5 and Fig.15 As shown, the second displacement suppressing portion 68 is arranged to be able to abut against the electrode connecting portion 31 of the terminal 30 from both left and right sides, thereby suppressing displacement of the terminal 30 in the left-right direction.

[0087] [Terminal]

[0088] like Figure 7 As shown in the figure, the terminal 30 is provided by processing a conductive metal plate. The terminal 30 includes a rectangular electrode connecting portion 31, an inclined surface 32 provided in connection with the lower portion of the electrode connecting portion 31, and a terminal side engaging portion 33 provided extending rearward from the upper end portion of the electrode connecting portion 31. A wire connecting portion 35 is connected to the rear end portion of the terminal side engaging portion 33 via a connecting portion 34. The wire connecting portion 35 is composed of a wire barrel portion 35A crimped to the core wire 46 of the wire 45 and an insulating barrel portion 35B crimped to the insulating sheath 47 of the wire 45.

[0089] like Fig.13 As shown, the terminal 30 is formed in a manner connected to the bonding portion 13 or a part of the bonding electrode lead 12A constituting the bonding portion 13. That is, the terminal 30 is not a member for connecting adjacent bonding electrode leads 12A, but a member for connecting the pre-connected bonding electrode lead 12A (bonding portion 13) and the electric wire 45. Therefore, the dimension of the terminal 30 in the vertical direction may be smaller than the dimension of the bonding electrode lead 12A in the vertical direction.

[0090] [Electrode connection part, first position]

[0091] like Fig.11As shown, in the wiring module 20 , the electrode connecting portion 31 is located in front of the terminal protection sheet 62 , and the lower portion of the electrode connecting portion 31 serves as the rear locked portion 36 that abuts against the rear locking portion 62B. Fig.11 The position of the terminal 30 shown is set as the first position. The first position is the rearmost position where the terminal 30 can move relative to the terminal receiving portion 56 in the front-rear direction. Fig.13 As shown, when the wiring module 20 is assembled to the battery stack 11L, the bonding electrode lead 12A is arranged in the front-rear direction between the electrode connection portion 31 and the terminal protection sheet 62. The electrode connection portion 31 is electrically connected to the bonding electrode lead 12A by laser welding.

[0092] [Terminal side engagement portion, second position]

[0093] like Fig.14 As shown, the terminal side engaging portion 33 is in the shape of a plate with the thickness direction being in the up-down direction, and is arranged perpendicular to the joint portion 13. In the wiring module 20, the terminal side engaging portion 33 is arranged between the lower side abutting portion 64A and the upper side abutting portion 64B, and can slide in contact with the protector side engaging portion 64. The terminal side engaging portion 33 slides in contact with the protector side engaging portion 64, so that the terminal 30 is held in the terminal receiving portion 56 in a manner that allows it to move in the front-rear direction. Figure 7 As shown in FIG. 1 , a notch-shaped front locked portion 37 is provided at the front end portions of the left and right sides of the terminal side locking portion 33. Fig.14 As shown, the front locked portion 37 is configured to be locked with the front locking portion 66B. The position of the terminal 30 in the state where the front locked portion 37 is locked with the front locking portion 66B is set to the second position. The second position is the frontmost position where the terminal 30 can move relative to the terminal receiving portion 56 in the front-rear direction.

[0094] [Inclined surface]

[0095] like Fig.11 As shown, the inclined surface 32 is inclined so that it is located more toward the front side as it approaches downward. That is, the inclined surface 32 is inclined so that it is further away from the terminal protection sheet 62 in the front-to-back direction as it approaches downward. When the wiring module 20 is assembled to the battery stack 11L, when the terminal 30 is arranged in the first position, the inclined surface 32 is arranged to include a range (hereinafter referred to as a standard position range) WT in the front-to-back direction where the bonding electrode lead 12A can be arranged. Here, the standard position range WT refers to the range from the frontmost position to the rearmost position where the bonding electrode lead 12A is arranged, taking into account the tolerance of the bonding electrode lead 12A in the front-to-back direction. In other words, if the terminal 30 is located in the first position, the bonding electrode lead 12A arranged within the assumed tolerance in the front-to-back direction contacts the inclined surface 32 (details will be described later).

[0096] like Figure 3 As shown, the inclined surface 32 is formed to be connected to the lower end portion of the left-right center position of the electrode connecting portion 31, and the dimension D1 of the inclined surface 32 in the left-right direction is smaller than the dimension D2 of the left-right direction of the electrode connecting portion 31. Therefore, when the electrode connecting portion 31 and the bonding electrode lead 12A are brought into close contact with each other by using a jig (not shown) for laser welding, the left and right ends of the electrode connecting portion 31 can be pressed by the jig, avoiding the inclined surface 32, and the central portion of the electrode connecting portion 31 can be welded.

[0097] [Bus Bar]

[0098] The bus bar 40 is in a plate shape and is formed by processing a conductive metal plate. Figure 2 As shown, the bus bar 40 is held by the bus bar holding portion 55 of the protector 50 in such a manner that the plate thickness direction becomes the left-right direction. Figure 1 As shown, the central portion of the bus bar 40 becomes the bus bar body 41 connected to the end electrode lead 12B. When connecting the bus bar body 41 and the end electrode lead 12B, the end electrode lead 12B may be appropriately bent so as to abut against the bus bar body 41. A bus bar side connection portion 42 bent to the left or right relative to the bus bar body 41 is provided at the upper portion of the bus bar 40.

[0099] like Figure 2 As shown, the bus bar side connection portion 42 has a through hole (not shown) through which the bolt 42A is inserted, and is bolted to the bolt fastening portion 55A of the protector 50. Figure 1 As shown, an external connection terminal 43 and a relay terminal 44 are overlapped on the bus bar side connection part 42, and are fastened together with the bus bar side connection part 42 by bolts. As a result, the bus bar side connection part 42 is electrically connected to the external connection terminal 43 and the relay terminal 44. The external connection terminal 43 is a conductive metal plate arranged to protrude to the left or right of the storage module 10, and is used to connect an external device (not shown) to the storage module 10. The relay terminal 44 is composed of a conductive metal plate, and is used to connect the bus bar side connection part 42 to the wire 45. The relay terminal 44 is connected to the wire 45 in the same way as the terminal 30.

[0100] [electric wire]

[0101] like Figure 3 As shown, the electric wire 45 has a core wire 46 (in Figure 3 and Figure 7 (not shown except for the above) and an insulating sheath 47 covering the core wire 46. Figure 2As shown, one end of the wire 45 is connected to the terminal 30 or the relay terminal 44, and the other end of the wire 45 is gathered into a bundle and connected to the connector 48. The wire 45 is wired at a predetermined position of the protector 50 through a wiring protrusion 69, a wire fixing portion 70, a wiring groove 71, etc. provided on the upper side of the protector 50.

[0102] The connector 48 is made of insulating synthetic resin, such as Figure 1 As shown, it is in a block shape. A female terminal not shown is housed inside the connector 48. The connector 48 is mated with a counterpart connector (not shown) having a male terminal. The counterpart connector is connected to an external ECU (Electronic Control Unit) or the like via an unshown wire. The ECU is equipped with a microcomputer, components, etc., and is a well-known structure having functions such as detecting the voltage, current, temperature, etc. of each laminated battery 11, and controlling the charge and discharge of each laminated battery 11.

[0103] The present embodiment has the above-described configuration, and the operation of the terminal 30 when the wiring module 20 is assembled to the battery stack 11L will be described below.

[0104] First, refer to Figures 11 to 14 , the case where the bonding electrode lead 12A is arranged within the standard position range WT is described. Figures 11 to 14 In the embodiment, the bonding electrode lead 12A is arranged at the frontmost position within the standard position range WT. Fig.11 As shown, in the state before the wiring module 20 is assembled to the battery stack 11L (hereinafter referred to as the pre-assembly state), if the terminal 30 is in the first position, the upper end of the bonding electrode lead 12A contacts the inclined surface 32. When the bonding electrode lead 12A contacts the inclined surface 32, a force is applied to the terminal 30 toward the front side (upper side) in the assembly direction. Fig.14 and Fig.16 As shown in FIG. 1 , the terminal side engaging portion 33 is in surface contact with the protector side engaging portion 64 in the vertical direction, so that the terminal receiving portion 56 can receive the upward force applied to the terminal 30 in a dispersed manner. In addition, the terminal receiving portion 56 can float relative to the protector body 51 through the hinge portion 57, so the hinge portion 57 is mainly bent at the second thin wall portion 60B, thereby absorbing the upward force applied to the terminal receiving portion 56 (refer to FIG. 1 ). Figure 6 ).

[0105] like Fig.12 As shown in FIG. 1 , as the wiring module 20 moves downward, the upper end of the bonding electrode lead 12A slides and contacts the inclined surface 32, so that the terminal 30 moves forward. If the wiring module 20 is further moved downward, as shown in FIG. Fig.13As shown in FIG. 1 , the electrode connection portion 31 is arranged in front of the bonding electrode lead 12A. Fig.14 As shown in FIG. 1 , when the bonding electrode lead 12A is arranged at the most forward position in the standard position range WT, the front of the terminal 30 is locked (reaching the second position) by the locking portion 37 and the front locking portion 66B of the terminal receiving portion 56. That is, as long as the bonding electrode lead 12A is arranged within the standard position range WT, the forward movement of the terminal 30 is not hindered.

[0106] In addition, in the pre-assembly state, when the terminal 30 is located on the front side relative to the first position, the upper end of the bonding electrode lead 12A abuts against the inclined surface 32 in the same manner as described above, or does not abut against the inclined surface 32 and directly enters between the electrode connecting portion 31 and the terminal protection sheet 62. Therefore, when the wiring module 20 is assembled to the battery stack 11L, interference between the terminal 30 and the bonding electrode lead 12A can be suppressed.

[0107] Furthermore, in this embodiment, even when the joining electrode lead 12A is not arranged within the standard position range WT, as described below, when the wiring module 20 is assembled to the battery stack 11L, the terminal storage portion 56 moves relative to the protector body 51, so that the joining electrode lead 12A is easily arranged between the electrode connecting portion 31 and the terminal protection sheet 62.

[0108] like Fig.17 and Fig.18 As shown in FIG. 1 , the case where the bonding electrode lead 12A is arranged on the side of the terminal protection piece 62 (i.e., the rear side) outside the standard position range WT is described. When the upper end of the bonding electrode lead 12A hits the protector side inclined surface 62A of the terminal protection piece 62, as the wiring module 20 moves downward, the upper end of the bonding electrode lead 12A slides and contacts the protector side inclined surface 62A, thereby applying a force toward the rear to the terminal storage portion 56. Here, as shown in FIG. Fig.18 As shown, the hinge portion 57 is mainly bent at the first thin wall portion 60A, so that the terminal receiving portion 56 moves backward in accordance with the front-back position of the bonding electrode lead 12A. Therefore, the bonding electrode lead 12A is arranged between the electrode connecting portion 31 and the terminal protection sheet 62 without interfering with the terminal protection sheet 62.

[0109] In addition, if Fig.19 and Fig. 20As shown, the case where the bonding electrode lead 12A is arranged on the side of the inclined surface 32 (i.e., the front side) outside the standard position range WT is described. When the upper end of the bonding electrode lead 12A hits the inclined surface 32, as the wiring module 20 moves downward, the upper end of the bonding electrode lead 12A slides and contacts the inclined surface 32, so that the terminal 30 moves forward. The bonding electrode lead 12A is arranged at a position forward of the standard position range WT, so that while the bonding electrode lead 12A slides and contacts the inclined surface 32, the front is locked by the locking portion 37 and the front locking portion 66B, and the terminal 30 cannot move forward relative to the terminal receiving portion 56 (refer to Fig.14 ). Therefore, a force is applied to the terminal receiving portion 56 toward the front. Fig. 20 As shown, the terminal receiving portion 56 moves forward in accordance with the front-rear direction position of the bonding electrode lead 12A by bending the hinge portion 57 at the first thin wall portion 60A. Therefore, the bonding electrode lead 12A is arranged between the electrode connecting portion 31 and the terminal protection sheet 62 without interfering with the inclined surface 32.

[0110] [Effects of Embodiment 1]

[0111] According to the first embodiment, the following actions and effects are achieved.

[0112] The wiring module 20 of the first embodiment is assembled to the battery stack 11L in an assembly direction orthogonal to the plate thickness direction of the joint 13. The battery stack 11L is composed of a plurality of laminated batteries 11 having electrode leads 12 stacked on top of each other, and has a joint 13 in which the electrode leads 12 of the laminated batteries 11 overlap and join to each other. The wiring module 20 includes: a terminal 30; an electric wire 45 connected to the terminal 30; and a protector 50 for holding the terminal 30 and the electric wire 45. The protector 50 includes: a terminal storage portion 56 for storing the terminal 30; and a protector-side snap-fit ​​portion 64 for holding the terminal 30 so that it can be held in a first position and a second position relative to the terminal storage portion 56. The terminal 30 moves in the direction of the plate thickness between the two positions, and the second position is arranged on one side of the first position in the direction of the plate thickness. The electrode lead constituting the joining portion 13 in the electrode lead 12 is set as the joining electrode lead 12A. The terminal 30 comprises: an electrode connecting portion 31, which is electrically connected to the joining electrode lead 12A; an inclined surface 32, which is arranged in connection with the electrode connecting portion 31 and is inclined in a manner that the closer it is to the deep side in the assembly direction, the closer it is to one side in the direction of the plate thickness; and a terminal side snap-in portion 33, which is snap-fitted with the protector side snap-in portion 64. When the terminal 30 is arranged in the first position, the inclined surface 32 is arranged to include a range WT in the direction of the plate thickness at which the joining electrode lead 12A can be arranged.

[0113] According to the above structure, when the wiring module 20 is assembled to the battery stack 11L, the inclined surface 32 engages with the end near the front side in the assembly direction of the bonding electrode lead 12A, so that the terminal 30 can move relative to the bonding electrode lead 12A in the plate thickness direction, thereby suppressing the interference between the terminal 30 and the bonding electrode lead 12A.

[0114] In embodiment 1, the terminal housing portion 56 has a terminal protection piece 62 arranged opposite to the electrode connecting portion 31 in the direction of the plate thickness, and the inclined surface 32 is inclined in a manner that the closer it is to the depth side in the assembly direction, the farther away from the terminal protection piece 62 it is, and the joining electrode lead 12A is arranged between the electrode connecting portion 31 and the terminal protection piece 62 in the direction of the plate thickness.

[0115] According to the above configuration, the terminal 30 can be protected by the terminal protection sheet 62. In addition, the bonding electrode lead 12A disposed between the electrode connection portion 31 and the terminal protection sheet 62 can be protected.

[0116] In the first embodiment, the protector-side inclined surface 62A is provided at the end of the terminal protection piece 62 on the deep side in the assembly direction. The protector-side inclined surface 62A is inclined so as to be located on the other side in the plate thickness direction as it approaches the deep side in the assembly direction.

[0117] According to the above configuration, even when the bonding electrode lead 12A is arranged on the terminal protection sheet 62 side beyond the range WT in the plate thickness direction where the bonding electrode lead 12A can be arranged, the bonding electrode lead 12A can be easily arranged between the electrode connecting portion 31 and the terminal protection sheet 62 .

[0118] In the first embodiment, the direction perpendicular to the plate thickness direction and the assembly direction is defined as the terminal width direction, and a dimension D1 of the inclined surface 32 in the terminal width direction is smaller than a dimension D2 of the electrode connecting portion 31 in the terminal width direction.

[0119] According to the above configuration, the work of electrically connecting the electrode connecting portion 31 and the bonding electrode lead 12A can be easily performed.

[0120] In the first embodiment, the terminal housing portion 56 includes the locking portion 67 , and the locking portion 67 prevents the terminal 30 from falling out of the terminal housing portion 56 in the plate thickness direction.

[0121] According to the above-mentioned structure, it is possible to suppress the terminal 30 from coming off from the terminal housing portion 56 .

[0122] In the first embodiment, the terminal housing portion 56 includes the first displacement suppressing portion 65 suppressing displacement of the terminal 30 in the assembly direction and the second displacement suppressing portion 68 suppressing displacement of the terminal 30 in the terminal width direction orthogonal to the plate thickness direction and the assembly direction.

[0123] According to the above-described structure, the terminal 30 can be positioned relative to the terminal housing portion 56 in the assembly direction and the terminal width direction.

[0124] In the first embodiment, the terminal-side engaging portion 33 is plate-shaped and arranged perpendicular to the joint portion 13 , and the protector-side engaging portion 64 also functions as the first displacement suppressing portion 65 by abutting against the rear side and the front side of the terminal-side engaging portion 33 in the assembly direction.

[0125] According to the above structure, the terminal side engaging portion 33 is in a plate shape perpendicular to the joint portion 13, so when the wiring module 20 is assembled to the battery stack 11L, it is easy to disperse the force applied to the terminal 30 in the assembly direction. In addition, because the protector side engaging portion 64 also serves as the first displacement suppression portion 65, the structure of the terminal storage portion 56 becomes simple.

[0126] In the first embodiment, the protector 50 includes the protector main body 51 , and the terminal housing portion 56 is connected to the protector main body 51 via the hinge portion 57 so as to be freely floating.

[0127] According to the above configuration, even when the bonding electrode lead 12A is arranged outside the range WT in the plate thickness direction where the bonding electrode lead 12A can be arranged, the bonding electrode lead 12A can be easily arranged between the electrode connecting portion 31 and the terminal protection sheet 62 .

[0128] <Implementation Method 2>

[0129] Reference Fig.21 as well as Fig. 22 Embodiment 2 of the present disclosure is described. The wiring module 120 of Embodiment 2 is configured similarly to the wiring module 20 of Embodiment 1, except that the terminal 130 has a trapezoidal portion 138. Hereinafter, the same components as those of Embodiment 1 are marked with the reference numerals used in Embodiment 1, and the same structures and effects as those of Embodiment 1 are omitted.

[0130] [Trapezoidal part]

[0131] like Fig.21As shown, the terminal 130 has a trapezoidal portion 138 arranged between the inclined surface 32 and the electrode connecting portion 31. The trapezoidal portion 138 is flush with the electrode connecting portion 31. The dimension of the trapezoidal portion 138 in the terminal width direction (left-right direction) decreases as it approaches the depth side (lower side) in the assembly direction. The trapezoidal portion 138 has a symmetrical shape in the left-right direction. The lower end of the trapezoidal portion 138 is arranged at the center position in the left-right direction relative to the electrode connecting portion 31 and is connected to the inclined surface 32. The dimension D3 in the left-right direction of the lower end of the trapezoidal portion 138 is set to be the same as the dimension D1 in the left-right direction of the inclined surface 32. The trapezoidal portion 138 has an outer edge portion 138A that continuously connects the left and right ends of the inclined surface 32 and the left and right ends of the upper part of the electrode connecting portion 31.

[0132] Here, if Fig. 22 As shown, consider the case where the outer portion 12C of the bonding electrode lead 12A disposed at a position not in contact with the inclined surface 32 is warped toward the terminal 130 side (front side). Fig. 22 The wiring module 120 is assembled in the middle of the battery stack 11L and the upper end of the electrode lead 12A is shown before it hits the terminal 130. Assuming that the terminal 30 of the first embodiment is used, the inclined surface 32 with different dimensions in the left and right directions and the electrode connecting portion 31 are not connected via the trapezoidal portion (see Figure 3 ), it is considered that when the wiring module 20 is assembled to the battery stack 11L, the outer portion 12C of the joined electrode lead 12A interferes with the lower end portion of the electrode connecting portion 31 .

[0133] However, in this embodiment, if Fig.21 As shown in FIG. 1 , the trapezoidal portion 138 (electrode connecting portion 31 ) is provided between the inclined surface 32 and the electrode connecting portion 31 so as to continuously extend in the left-right direction. Fig. 22 In this embodiment, the outer portion 12C of the bonding electrode lead 12A is in sliding contact with the outer edge portion 138A of the trapezoidal portion 138 , thereby suppressing interference between the bonding electrode lead 12A and the electrode connecting portion 31 .

[0134] [Effects of Embodiment 2]

[0135] According to the second embodiment, the following functions and effects are achieved.

[0136] In embodiment 2, preferably, the inclined surface 32 is arranged at the central position of the electrode connecting portion 31 in the terminal width direction, and the electrode connecting portion 31 is connected to the inclined surface 32 via the trapezoidal portion 138. The dimension of the trapezoidal portion 138 in the terminal width direction decreases as it approaches the depth side in the assembly direction. The trapezoidal portion 138 has a shape symmetrical about the terminal width direction, and the dimension D3 in the terminal width direction of the end of the trapezoidal portion 138 on the depth side in the assembly direction is set to be the same as the dimension D1 of the inclined surface 32 in the terminal width direction.

[0137] According to the above configuration, interference between the bonding electrode lead 12A (outer portion 12C) outside the inclined surface 32 in the terminal width direction and the electrode connecting portion 31 can be suppressed.

[0138] <Other Implementation Methods>

[0139] (1) In the above embodiment, the junction 13 is formed by joining two electrode leads 12 and the laminated batteries 11 are connected in series, but the present invention is not limited thereto. The junction may be formed by joining three or more electrode leads and the laminated batteries may be connected in parallel.

[0140] (2) In the above embodiment, the terminal housing portion 56 includes the terminal protection sheet 62 , but the present invention is not limited thereto, and the terminal housing portion may not include the terminal protection sheet.

[0141] (3) In the above embodiment, the terminal housing portion 56 is connected to the protector body 51 via the hinge portion 57 so as to float freely. However, the present invention is not limited thereto and the terminal housing portion may be non-floating relative to the protector body.

[0142] (4) In the above embodiment, the power storage module 10 is configured to include the case 14 , but the present invention is not limited thereto, and the power storage module may be configured not to include a case.

[0143] [Explanation of Reference Numerals]

[0144] 10: Power storage module

[0145] 11: Laminated battery

[0146] 11L: Battery stack

[0147] 12: Electrode lead

[0148] 12A: Bonding electrode leads

[0149] 12B: End electrode lead

[0150] 12C: The outer part of the bonding electrode lead

[0151] 13: Joint

[0152] 14: Shell

[0153] 15: Bottom

[0154] 16: Top

[0155] 17: Lateral part

[0156] 20,120: Wiring module

[0157] 30,130: Terminal

[0158] 31: Electrode connection part

[0159] 32: Inclined surface

[0160] 33: Terminal side engagement portion

[0161] 34: Connection

[0162] 35: Wire connection part

[0163] 35A: Wire barrel

[0164] 35B: Insulation barrel

[0165] 36: The rear is stuck

[0166] 37: The front is stuck

[0167] 40: Busbar

[0168] 41: Busbar body

[0169] 42: Busbar side connection

[0170] 42A: Bolt

[0171] 43: External connection terminal

[0172] 44: Relay terminal

[0173] 45: Wire

[0174] 46: Core wire

[0175] 47: Insulation coating

[0176] 48: Connector

[0177] 50: Protector

[0178] 51: Protector body

[0179] 54: Electrode receiving part

[0180] 54A: Bonding electrode receiving portion

[0181] 54B: End electrode receiving portion

[0182] 55: Bus bar holding part

[0183] 55A: Bolt fastening part

[0184] 56: Terminal accommodating portion

[0185] 57: hinge

[0186] 58: Protruding piece

[0187] 59: Extension piece

[0188] 60: Thin wall part

[0189] 60A: First thin-walled portion

[0190] 60B: Second thin-walled portion

[0191] 61: Cylinder receiving recess

[0192] 62: Terminal protection sheet

[0193] 62A: Protector side inclined surface

[0194] 62B: Rear locking part

[0195] 63: Center frame

[0196] 64: Protector side snap-in portion

[0197] 64A: Lower side contact portion

[0198] 64B: Upper side contact portion

[0199] 65: First displacement suppression unit

[0200] 66: Locking protrusion

[0201] 66A: snap-fit ​​surface

[0202] 66B: Front locking part

[0203] 67: Carding Department

[0204] 68: Second translocation inhibition unit

[0205] 69: Wiring protrusion

[0206] 70: Wire fixing part

[0207] 71: Wiring slot

[0208] 138: Trapezoid

[0209] 138A: Outer edge of the trapezoidal portion

[0210] D1: Dimension of the inclined surface in the terminal width direction

[0211] D2: Dimension of the electrode connection part in the terminal width direction

[0212] D3: Dimension in the terminal width direction of the end portion of the trapezoidal portion on the deep side in the assembly direction

[0213] WT: The range of positions where the bonding electrode lead can be arranged in the plate thickness direction (standard position range)

Claims

1. A wiring module, assembled to a battery stack in an assembly direction orthogonal to a plate thickness direction of a joint portion, wherein the battery stack is formed by stacking a plurality of laminated batteries having electrode leads, and the joint portion is formed by overlapping and joining the electrode leads of the laminated batteries, wherein: The wiring module has: terminal; an electric wire connected to the terminal; and protector, holding the terminal and the wire, The protector comprises: a terminal receiving portion for receiving the terminal; and a protector-side engaging portion for holding the terminal so as to be movable in the plate thickness direction between a first position and a second position relative to the terminal receiving portion. The second position is arranged on one side of the first position in the plate thickness direction, The electrode leads constituting the bonding portion among the electrode leads are set as bonding electrode leads, The terminal comprises: an electrode connecting portion electrically connected to the bonding electrode lead; an inclined surface provided in connection with the electrode connecting portion and inclined in a manner that the closer to the deep side in the assembly direction, the closer to the one side in the plate thickness direction; and a terminal side engaging portion engaged with the protector side engaging portion. The inclined surface is arranged so as to include a range of a position in the plate thickness direction where the bonding electrode lead can be arranged when the terminal is arranged at the first position.

2. The wiring module according to claim 1, wherein: The terminal housing portion includes a terminal protection sheet, which is arranged opposite to the electrode connection portion in the plate thickness direction. The inclined surface is inclined so as to be further away from the terminal protection sheet as it approaches the depth side in the assembly direction. The bonding electrode lead is arranged between the electrode connecting portion and the terminal protection sheet in the plate thickness direction.

3. The wiring module according to claim 2, wherein: A protector-side inclined surface is provided at an end portion of the terminal protection piece on the depth side in the assembly direction, and the protector-side inclined surface is inclined so as to be located on the other side in the plate thickness direction as it approaches the depth side in the assembly direction.

4. The wiring module according to any one of claims 1 to 3, wherein: A direction perpendicular to the plate thickness direction and the assembly direction is defined as a terminal width direction. A dimension of the inclined surface in the terminal width direction is smaller than a dimension of the electrode connecting portion in the terminal width direction.

5. The wiring module according to claim 4, wherein: The inclined surface is arranged at a central position of the electrode connecting portion in the terminal width direction. The electrode connection portion is connected to the inclined surface via a trapezoidal portion, and the dimension of the trapezoidal portion in the terminal width direction becomes smaller as it approaches the depth side in the assembly direction. The trapezoidal portion has a shape symmetrical with respect to the width direction of the terminal, The dimension of the end portion of the trapezoidal portion on the deep side in the assembling direction in the terminal width direction is set to be the same as the dimension of the inclined surface in the terminal width direction.

6. The wiring module according to any one of claims 1 to 3, wherein: The terminal receiving portion includes a locking portion that prevents the terminal from falling out of the terminal receiving portion in the plate thickness direction.

7. The wiring module according to any one of claims 1 to 3, wherein: The terminal housing portion includes: a first displacement suppressing portion suppressing displacement of the terminal in the assembly direction; and a second displacement suppressing portion suppressing displacement of the terminal in a terminal width direction orthogonal to the plate thickness direction and the assembly direction.

8. The wiring module according to claim 7, wherein: The terminal side engaging portion is plate-shaped and is arranged perpendicular to the engaging portion. The protector-side engaging portion also functions as the first displacement suppressing portion by abutting against the rear side and the front side of the terminal-side engaging portion in the assembling direction.

9. The wiring module according to any one of claims 1 to 3, wherein: The protector includes a protector body, and the terminal housing portion is coupled to the protector body via a hinge portion so as to be freely floating.

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