Wiring module

Abstract

A wiring module (20) is attached to a battery stack (11L), the battery stack (11L) being configured by stacking a plurality of power storage elements provided with electrode terminals, the wiring module (20) being provided with at least one first electric wire (W1) and a protector (50), the protector (50) being provided with a housing part (60) extending in a routing direction in which the first electric wire (W1) is routed and housing the first electric wire (W1), the housing part (60) having: a bottom part (61); at least one first side piece (62A) extending from one side edge of the bottom part (61) in a first direction orthogonal to the laying direction; at least one second side sheet (62B) extending in the first direction from the other side edge of the bottom section (61); at least one first space (S1) provided adjacent to the first side sheet (62A) in the laying direction; and at least one second space (S2) provided adjacent to the second side sheet (62B) in the laying direction, the first side sheet (62A) and the second side sheet (62B) being disposed so as not to overlap each other in a second direction orthogonal to both the laying direction and the first direction, the first side sheet (62A) and the second side sheet (62B) being capable of flexural deformation in the second direction, the side surface of the second side sheet (62B) of the first side sheet (62A) in the second direction facing the second space (S2), and the side surface of the second side sheet (62B) facing the second space (S2). The second side piece (62B) is provided with a first side piece (62A) side surface facing the first space (S1) in the second direction, the first side piece (62A) is provided with a first claw part (63A) protruding from an end edge of the first side piece (62A) in the first direction to the second space (S2) side, and the second side piece (62B) is provided with a second claw part (63B) protruding from an end edge of the second side piece (62B) in the first direction to the first space (S1) side. The minimum dimension (L1) between the first claw portion (63A) and the second claw portion (63B) in the second direction is smaller than the outer diameter (D1) of the first electric wire (W1).

Description

Technical Field

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

[0002] High-voltage battery packs for electric vehicles, hybrid vehicles, etc. generally have a plurality of battery cells stacked and electrically connected in series or in parallel via a wiring module. As such a wiring module, a wiring module described in Japanese Patent Application Laid-Open No. 2016-122577 (hereinafter referred to as Patent Document 1) is known in the art.

[0003] The wiring module described in Patent Document 1 includes a bus bar, a temperature detection component, and an insulating protector for holding the bus bar and the temperature detection component. The bus bar and the temperature detection component are connected to external devices of the wiring module via electric wires, respectively. The insulating protector has a wire storage groove for storing electric wires. A limiting piece protruding from one groove wall portion toward the other groove wall portion is provided at the upper end edge of a pair of groove wall portions of the wire storage groove. The limiting piece limits the electric wire from emerging from the wire storage groove. The limiting piece is provided on both sides of a pair of groove wall portions, and the corresponding pair of limiting pieces are arranged in a manner close to each other. Prior art literature Patent Literature

[0004] Patent Document 1: Japanese Patent Application Publication No. 2016-122577 Summary of the invention Problems to be solved by the invention

[0005] In the above structure, when storing the electric wires in the electric wire storage groove, the following operation is required: by bending the restriction pieces, the interval between the pair of restriction pieces facing each other is enlarged compared with the outer diameter of the electric wires, and the electric wires are guided between the pair of restriction pieces.

[0006] In such a wiring module, a structure that can more easily lay the electric wires on the insulating protector is desired. Solutions to Solve Problems

[0007] The wiring module of the present invention is assembled on a battery stack, and the battery stack is formed by stacking a plurality of storage elements having electrode terminals, and the wiring module has at least one first electric wire and a protector, and the protector has a storage portion extending along a laying direction in which the first electric wire is laid and storing the first electric wire, and the storage portion has: a bottom; at least one first side piece extending from a side edge of the bottom to a first direction orthogonal to the laying direction; at least one second side piece extending from another side edge of the bottom to the first direction; at least one first space arranged adjacent to the first side piece in the laying direction; and at least one second space arranged adjacent to the second side piece in the laying direction, the first side piece and the second side piece being arranged adjacent to each other in the laying direction. The second side piece is configured to not overlap with each other in a second direction orthogonal to both the laying direction and the first direction, the first side piece and the second side piece can bend and deform in the second direction, the second side piece side of the first side piece in the second direction faces the second space, and the first side piece side of the second side piece in the second direction faces the first space, the first side piece has a first claw protruding from the end edge of the first side piece in the first direction toward the second space side, the second side piece has a second claw protruding from the end edge of the second side piece in the first direction toward the first space side, and the minimum dimension between the first claw and the second claw in the second direction is smaller than the outer diameter of the first wire. Effects of the Invention

[0008] According to the present invention, it is possible to provide a wiring module in which the wiring work of the first electric wire is easy. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a front view of the power storage module according to the embodiment. Figure 2 It is an enlarged front view of the power storage module showing the periphery of the wire housing portion. Figure 3 yes Figure 2 AA section view. Figure 4 This is an enlarged side view of the power storage module showing the periphery of the wire housing portion. Figure 5 This is an enlarged perspective view of the power storage module showing the periphery of the wire housing portion. Figure 6 It is a perspective view of the front part of a battery stack. Figure 7 It is a perspective view showing the main parts of a laminate type battery. Figure 8 This is an enlarged perspective view of a power storage module showing the periphery of a wire housing according to another embodiment. DETAILED DESCRIPTION

[0010] [Description of Embodiments of the Invention] First, embodiments of the present invention will be described by way of examples.

[0011] (1) The wiring module of the present invention is assembled on a battery stack, and the battery stack is formed by stacking a plurality of storage elements having electrode terminals, and the wiring module has at least one first electric wire and a protector, and the protector has a storage portion extending along a layout direction in which the first electric wire is laid and accommodating the first electric wire, and the storage portion has: a bottom; at least one first side piece extending from a side edge of the bottom in a first direction orthogonal to the layout direction; at least one second side piece extending from another side edge of the bottom in the first direction; at least one first space arranged adjacent to the first side piece in the layout direction; and at least one second space arranged adjacent to the second side piece in the layout direction, the first side piece and the second side piece are configured to not overlap with each other in a second direction orthogonal to both the laying direction and the first direction, the first side piece and the second side piece can bend and deform in the second direction, the second side piece side of the first side piece in the second direction faces the second space, and the second side piece side of the second side piece in the second direction faces the first space, the first side piece has a first claw protruding from the end edge of the first side piece in the first direction toward the second space side, the second side piece has a second claw protruding from the end edge of the second side piece in the first direction toward the first space side, and the minimum dimension between the first claw and the second claw in the second direction is smaller than the outer diameter of the first wire.

[0012] According to such a structure, since the first side piece and the second side piece can be bent and deformed in the second direction, the operation of introducing the first electric wire into the storage portion is facilitated by expanding the interval between the first claw portion and the second claw portion by bending the first side piece or the second side piece. In addition, the first side piece and the second side piece are arranged so as not to be opposed to each other in the second direction, so the bending amount of the first side piece or the second side piece required for introducing the first electric wire into the storage portion becomes small. Therefore, it is easy to store the first electric wire in the storage portion.

[0013] (2) Preferably, the first side sheets and the first spaces are arranged alternately in the layout direction, and the second side sheets and the second spaces are arranged alternately in the layout direction.

[0014] According to such a configuration, since the first side pieces and the second side pieces are alternately arranged in the laying direction, the first electric wires are easily held in the storage portion.

[0015] (3) Preferably, the wiring module further comprises a second electric wire different from the first electric wire, the protector comprises a laying portion, the second electric wire is laid in the laying portion along the laying direction, the laying portion comprises a bottom wall portion and a pair of side wall portions extending from both side edges of the bottom wall portion toward the second direction, the side wall portion also serving as the bottom.

[0016] According to such a configuration, in the protector, the space occupied by the storage portion for storing the first electric wire and the layout portion for layout of the second electric wire can be reduced.

[0017] (4) Preferably, the wiring module further includes a plurality of conductive members connected to the electrode terminals, the protector includes through holes penetrating in the second direction, and the electrode terminals and the conductive members are connected via the through holes.

[0018] According to this structure, the protector and the battery stack are assembled in the second direction. Since the first side sheet and the second side sheet can bend and deform in the second direction, the first electric wire can be easily accommodated in the accommodating portion even after the protector is assembled to the battery stack.

[0019] [Details of Embodiments of the Invention] Hereinafter, embodiments of the present invention will be described. The present invention is not limited to these examples but is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0020] <Implementation Method> Reference Figures 1 to 7 An embodiment of the present invention 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, regarding a plurality of identical components, sometimes only a part of the components are marked with reference numerals, and the reference numerals of other components are omitted. In the following description, the direction indicated by the arrow line X is described as the front, the direction indicated by the arrow line Y is described as the left, and the direction indicated by the arrow line Z is described as the top. In the present embodiment, the up-and-down direction is an example of a layout direction, the left-and-right direction is an example of a first direction, and the front-and-back direction is an example of a second direction.

[0021] [Battery stack] The power storage module 10 includes Figure 6 The battery stack 11L shown in FIG. Figure 1 The wiring module 20 is shown mounted on the battery stack 11L.

[0022] [Laminated battery, electrode lead] like Figure 6As shown, the battery stack 11L is formed by stacking a plurality (18 in this embodiment) of laminated batteries 11 (an example of a storage element) in a stacking direction (left-right direction). Figure 6 In FIG. 1 , only the front side portion of the battery stack 11L is shown. Figure 7 As shown, 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 stored inside the laminated battery 11. A pair of electrode leads 12 (an example of electrode terminals) are arranged on both sides of the laminated battery 11 in the front-to-back direction, protruding in opposite directions. The pair of electrode leads 12 are plate-shaped and have opposite polarities.

[0023] like Figure 6 As shown, a joint 13 is provided in the battery stack 11L, and the four electrode wires 12 of the laminated batteries 11 arranged continuously in the left-right direction are electrically connected to the joint 13. That is, the four electrode wires 12 are bent roughly vertically to the left or right and overlapped, and the joint 13 is formed by joining by laser welding. The electrode wire 12 constituting the joint 13 is a connecting electrode wire 12A. The two connecting electrode wires 12A arranged on the right and the two connecting electrode wires 12A arranged on the left of the four connecting electrode wires 12A have opposite polarities. For example, the two connecting electrode wires 12A on the right are positive electrodes, and the two connecting electrode wires 12A on the left are negative electrodes. Therefore, in the battery stack 11L, the joint 13 connects the two laminated batteries 11 connected in parallel in series. The battery stack 11L has four joints 13 at the front. In addition, although not shown, the battery stack 11L also has four joints 13 at the rear.

[0024] The battery stack 11L has an output portion 14 at the left end portion of the front portion. In addition, although not shown in the figure, the battery stack 11L also has an output portion 14 at the right end portion of the rear portion. The output portion 14 is formed by joining two electrode wires 12 that do not constitute the joint portion 13 among the electrode wires 12. The electrode wire 12 that constitutes the output portion 14 is an output electrode wire 12B. The two output electrode wires 12B that constitute one output portion 14 have the same polarity. The output portion 14 constitutes the positive electrode or negative electrode of the entire battery stack 11L. That is, for example, when the output portion 14 at the front is the total positive electrode of the battery stack 11L, the output portion 14 at the rear is the total negative electrode of the battery stack 11L.

[0025] [Wiring module] like Figure 1As shown, the wiring module 20 of the present embodiment includes: a terminal 30 (an example of a conductive member) connected to the connection electrode wire 12A; a bus bar 40 (an example of a conductive member) connected to the output electrode wire 12B; a first wire W1; a second wire W2 connected to the terminal 30; and a protector 50 that holds the terminal 30, the bus bar 40, the first wire W1, and the second wire W2. The structure of the wiring module 20 arranged on the front side of the storage module 10 is described in detail below. Although not shown in the figure, the wiring module 20 arranged on the rear side of the storage module 10 is configured in the same manner as the wiring module 20 arranged on the front side of the storage module 10.

[0026] The bus bar 40 is in a plate shape and is formed by processing a conductive metal plate. Figure 1 As shown, the bus bar 40 includes a first portion 40A extending in the vertical direction and a second portion 40B connected to the upper end of the first portion 40A. The first portion 40A is flat in the front-to-back direction. The second portion 40B extends rightward from the upper end of the first portion 40A and is flat in the vertical direction. The bus bar 40 is held by the bus bar holding portion 53 of the protector 50 and is connected to the output electrode lead 12B at the center of the first portion 40A in the vertical direction. A bus bar side connecting portion 41 is provided at the right end of the second portion 40B.

[0027] Although not shown, the bus bar side connection portion 41 has a through hole for inserting a bolt. An external connection terminal (not shown) is overlapped on the bus bar side connection portion 41 and is bolted to the bus bar side connection portion 41. Thus, the bus bar side connection portion 41 is electrically connected to the external connection terminal. The external connection terminal is used to connect an external device (not shown) and the power storage module 10.

[0028] The terminal 30 is provided by processing a conductive metal plate. Figure 1 As shown, the terminal 30 includes a main body 31, a connecting portion 32 extending to the right from the main body 31, and a wire connecting portion 34 extending upward from the main body 31. The main body 31 is housed and held in the terminal housing portion 54 of the protector 50. The connecting portion 32 is formed in a manner to contact and connect with the joint 13 or a portion of the connecting electrode wire 12A constituting the joint 13. That is, the terminal 30 is not a component for connecting between adjacent connecting electrode wires 12A, but a component for connecting between the pre-connected connecting electrode wire 12A (joint 13) and the second electric wire W2. The wire connecting portion 34 has a tightening piece crimped to the second electric wire W2.

[0029] [Second electric wire] One end of the second electric wire W2 is connected to the terminal 30. Figure 1Although not shown in the figure, the other end of the second electric wire W2 is connected to an external ECU (Electronic Control Unit) or the like via a connector or the like. 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 or controlling the charge and discharge of each laminated battery 11. That is, the second electric wire W2 of this embodiment is a so-called voltage detection line. The second electric wire W2 is arranged inside the layout portion 55 and the layout groove portion 56 of the protector 50.

[0030] [First electric wire] The wiring module 20 includes a plurality of (eight in this embodiment) first electric wires W1. The first electric wires W1 are arranged inside the storage portion 60 and the wiring groove portion 56 of the protector 50. The first electric wires W1 are different from the second electric wires W2. The first electric wires W1 are connected to a thermistor (not shown) for measuring the temperature of the battery stack 11L, for example.

[0031] [Protector] The protector 50 is made of insulating synthetic resin and is in the shape of a plate. Figure 1 As shown, the protector 50 includes a protector body 51 positioned relative to the battery stack 11L. In the central part of the protector body 51 in the vertical direction, electrode storage recesses 52 (an example of through holes) are arranged in parallel in the left and right directions. The electrode storage recesses 52 are formed through the front-to-back direction and are rectangular and long in the vertical direction. The electrode storage recesses 52 are composed of a connection electrode storage recess 52A for receiving the joint 13 and the connection electrode lead 12A and an output electrode storage recess 52B for receiving the output electrode lead 12B and the output portion 14.

[0032] The bus bar holding portion 53 for holding the bus bar 40 is provided on the upper and lower sides of the output electrode storage recess 52B. A bolt fastening portion 53A for bolt-fastening the bus bar 40 is provided on the right side of the upper bus bar holding portion 53. A terminal storage portion 54 for storing a part of the terminal 30 is provided on the oblique lower left side of the connection electrode storage recess 52A.

[0033] [Layout Department] On the left side of the connection electrode receiving recess 52A, a layout portion 55 is formed by being recessed from the protector body 51 to the rear. The layout portion 55 is in the shape of a groove extending in the up-down direction. The layout portion 55 is connected to the terminal receiving portion 54 at the bottom. The layout portion 55 is connected to the layout groove portion 56 at the top. Figure 2As shown, the layout portion 55 includes a bottom wall portion 55A and a pair of side wall portions 55B extending forward from both side edges of the bottom wall portion 55A in the left-right direction. The layout portion 55 of this embodiment includes a pair of locking pieces 55C. The pair of locking pieces 55C extend from the front end portions of the pair of side wall portions 55B in the left-right direction in a manner that they are opposed to each other and approach each other. Figure 3 As shown, the pair of locking pieces 55C press the second electric wire W2 from the front to prevent the second electric wire W2 from being disengaged from the routing portion 55. The interval L2 between the pair of locking pieces 55C in the left-right direction is set smaller than the outer diameter D2 of the second electric wire W2.

[0034] like Figure 1 As shown, the wiring groove 56 is in the shape of a groove extending in the left-right direction, and two wiring grooves are provided in the same manner as the wiring portion 55. The wiring groove 56 disposed on the lower side of the two wiring grooves 56 communicates with the wiring portion 55 and accommodates a plurality of second electric wires W2. The wiring groove 56 disposed on the upper side communicates with the accommodation portion 60 and accommodates a plurality of first electric wires W1.

[0035] [Storage section, bottom, first side panel, second side panel] A storage portion 60 for storing the first electric wire W1 is arranged on the left side of the second layout portion 55 from the right. The storage portion 60 is formed in a groove shape with a side wall portion partially cut away. The storage portion 60 extends along the layout direction (vertical direction) in which the first electric wire W1 is laid. Figures 2 to 5 As shown, the storage portion 60 includes a bottom 61, a plurality of (three in the present embodiment) first side panels 62A, and a plurality of (two in the present embodiment) second side panels 62B. The first side panel 62A extends to the left from the side edge of the front side of the bottom 61. The second side panel 62B extends to the left from the side edge of the rear side of the bottom 61. The first side panel 62A and the second side panel 62B are arranged so as not to overlap each other in the front-to-back direction. The first side panel 62A and the second side panel 62B can bend and deform in the front-to-back direction. Figure 3 As shown, the bottom portion 61 is a portion of approximately four fifths of the front side of the side wall portion 55B disposed on the left side of the second layout portion 55 from the right.

[0036] [1st Space] like Figure 4 As shown, a first space S1 is provided at a position adjacent to the first side piece 62A in the left-right direction. The storage portion 60 has two first spaces S1. The first space S1 is surrounded by the side edge of the first side piece 62A in the up-down direction and the front edge of the bottom 61. The second side piece 62B is arranged in a manner facing the first space S1 in the front.

[0037] [Space 2] A second space S2 is provided at a position adjacent to the second side piece 62B in the left-right direction. The storage portion 60 has three second spaces S2. The second space S2 is surrounded by the side edges in the up-down direction of the second side piece 62B and the rear edge of the bottom 61. The first side piece 62A is arranged to face the second space S2 from behind.

[0038] [1st claw, 2nd claw] The first side piece 62A includes a first claw portion 63A that protrudes from its left edge toward the second space S2 side (rear side). The first claw portion 63A is roughly trapezoidal in side view, and is narrowed toward the end side (rear side). The second side piece 62B includes a second claw portion 63B that protrudes from its left edge toward the first space S1 side (front side). The second claw portion 63B is roughly trapezoidal in side view, and is narrowed toward the end side (front side). Figure 3 As shown, the minimum dimension L1 between the first claw 63A and the second claw 63B in the front-rear direction is set smaller than the outer diameter D1 of the first wire W1. The first claw 63A and the second claw 63B press the first wire W1 from the left to prevent the first wire W1 from escaping from the storage portion 60 to the outside.

[0039] In this embodiment, if Figure 4 As shown, the first side piece 62A and the first space S1 are arranged alternately in the vertical direction, and the second side piece 62B and the second space S2 are arranged alternately in the vertical direction. That is, as the positional relationship between the first side piece 62A and the second side piece 62B, the first side piece 62A and the second side piece 62B are arranged alternately in a zigzag shape in the vertical direction. Thus, the first electric wire W1 can be stably stored in the storage portion 60.

[0040] [Introduction of the first electric wire into the storage portion] When the first electric wire W1 is introduced into the storage portion 60, the first side piece 62A is bent forward and the second side piece 62B is bent backward. Thus, the interval between the first claw portion 63A and the second claw portion 63B can be enlarged to introduce the first electric wire W1 between the first claw portion 63A and the second claw portion 63B. That is, since the first side piece 62A and the second side piece 62B can be bent instead of the first claw portion 63A and the second claw portion 63B, the introduction of the first electric wire W1 into the storage portion 60 becomes easier than in the existing structure (the electric wire storage groove of Patent Document 1 or the layout portion 55 of this embodiment, etc.).

[0041] In addition, when the first electric wire W1 is stored in the storage section 60, a side piece (the first side piece 62A or the second side piece 62B) is arranged on one side in the front-back direction of the first electric wire W1, and on the other side, the space (the second space S2 or the first space S1) is expanded. For simplicity, a partial structure of the storage section 60 having the first side piece 62A on the front side and the second space S2 on the rear side (set as the first unit 60A) is described. In order to introduce the first electric wire W1 into the first unit 60A, the first side piece 62A is bent forward so that the first claw 63A of the first side piece 62A does not interfere with the first electric wire W1. At this time, the first electric wire W1 can also enter the second space S2 that expands backward. Therefore, the bending amount of the first side piece 62A required to store the first electric wire W1 in the first unit 60A becomes smaller. The same can be said about the second unit 60B which is formed as a partial structure of the storage section 60 having the second side piece 62B on the rear side and the first space S1 on the front side. Therefore, when the first electric wire W1 is introduced into the storage section 60, the first side piece 62A and the second side piece 62B do not need to be greatly bent, so the operation of storing the first electric wire W1 in the storage section 60 becomes easy.

[0042] On the other hand, unlike the present embodiment, when the first side piece and the second side piece are arranged opposite to each other in the front-back direction, when the first electric wire is introduced into the storage portion, the first side piece and the second side piece must be bent so that the first claw and the second claw do not interfere with the first electric wire. At this time, the bending amount of the first side piece and the second side piece is greater than the above-mentioned bending amount.

[0043] [Effects of the Embodiments] According to the embodiment, the following actions and effects are achieved. The wiring module 20 of the embodiment is mounted on a battery stack 11L, and the battery stack 11L is formed by stacking a plurality of storage elements (laminated batteries 11) having electrode terminals (electrode conductors 12). The wiring module 20 includes at least one first wire W1 and a protector 50, and the protector 50 includes a storage portion 60 extending along a layout direction (up and down direction) in which the first wire W1 is laid and accommodating the first wire W1, and the storage portion 60 includes: a bottom 61; at least one first side piece 62A extending from one (front) side edge of the bottom 61 in a first direction (left and right direction) orthogonal to the layout direction; at least one second side piece 62B extending from the other (rear) side edge of the bottom 61 in the first direction; at least one first space S1 disposed adjacent to the first side piece 62A in the layout direction; and at least one second space S2 disposed adjacent to the second side piece 62 B is arranged adjacent to each other in the laying direction, and the first side piece 62A and the second side piece 62B are configured not to overlap each other in the second direction (front-back direction) orthogonal to both the laying direction and the first direction, and the first side piece 62A and the second side piece 62B can be bent and deformed in the second direction, and the second side piece 62B side of the first side piece 62A in the second direction faces the second space S2, and the second side piece 62B side of the first side piece 62A in the second direction faces the first space S1, the first side piece 62A has a first claw portion 63A protruding from the end edge of the first side piece 62A in the first direction toward the second space S2 side, and the second side piece 62B has a second claw portion 63B protruding from the end edge of the second side piece 62B in the first direction toward the first space S1 side, and the minimum dimension L1 between the first claw portion 63A and the second claw portion 63B in the second direction is smaller than the outer diameter D1 of the first wire W1.

[0044] According to such a structure, since the first side piece 62A and the second side piece 62B can be bent and deformed in the second direction, the operation of introducing the first electric wire W1 into the storage portion 60 becomes easy by bending the first side piece 62A or the second side piece 62B to expand the interval between the first claw portion 63A and the second claw portion 63B. In addition, since the first side piece 62A and the second side piece 62B are arranged so as not to be opposed to each other in the second direction, the bending amount of the first side piece 62A or the second side piece 62B required to introduce the first electric wire W1 into the storage portion 60 becomes small. Therefore, it is easy to store the first electric wire W1 in the storage portion 60.

[0045] In the embodiment, the first side sheets 62A and the first spaces S1 are alternately arranged in the layout direction, and the second side sheets 62B and the second spaces S2 are alternately arranged in the layout direction.

[0046] According to such a configuration, since the first side pieces 62A and the second side pieces 62B are alternately arranged in the routing direction, the first electric wires W1 are easily held in the storage portion 60 .

[0047] The wiring module 20 of the embodiment further includes a second electric wire W2 different from the first electric wire W1, and the protector 50 includes a laying portion 55, and the second electric wire W2 is laid in the laying portion 55 along a laying direction. The laying portion 55 includes a bottom wall portion 55A and a pair of side wall portions 55B extending from both side edges of the bottom wall portion 55A in the second direction, and the side wall portion 55B also serves as a bottom 61.

[0048] According to such a configuration, in the protector 50 , the space occupied by the storage portion 60 for storing the first electric wires W1 and the routing portion 55 for routing the second electric wires W2 can be reduced.

[0049] The wiring module 20 of the embodiment further includes a plurality of conductive members (terminals 30 and bus bars 40 ) connected to the electrode terminals, the protector 50 has through holes (electrode housing recesses 52 ) penetrating in the second direction, and the electrode terminals and the conductive members are connected via the through holes.

[0050] According to such a structure, the protector 50 and the battery stack 11L are assembled in the second direction. Since the first side piece 62A and the second side piece 62B can bend and deform in the second direction, the first electric wire W1 can be easily stored in the storage portion 60 even after the protector 50 is assembled to the battery stack 11L.

[0051] <Other Implementation Methods> (1) In the above embodiment, the plurality of first electric wires W1 are stored in the storage portion 60 in an unbundled state, but the present invention is not limited thereto. Figure 8 As shown, the wiring module 20 may be configured as follows: further comprising a bundling member BM for bundling the plurality of first electric wires W1, and the plurality of first electric wires W1 bundled by the bundling member BM are stored in the storage portion 60. Here, the bundling member BM may be a heat shrink tube, a corrugated tube, etc. By bundling the plurality of first electric wires W1 with the bundling member BM, the plurality of first electric wires W1 can be stored in the storage portion 60 at once.

[0052] (2) In the above embodiment, the second electric wire W2 is a voltage detection line and the first electric wire W1 has a different structure from the second electric wire W2. However, the present invention is not limited thereto and the first electric wire may be a voltage detection line. (3) In the above embodiment, the side wall 55B of the layout portion 55 also serves as the bottom 61 of the storage portion 60, but the present invention is not limited thereto. For example, the layout portion may not be provided, or the layout portion may be provided and its side wall does not include the bottom of the storage portion. (4) In the above embodiment, the first side sheets 62A and the second side sheets 62B are arranged alternately in a zigzag pattern, but the present invention is not limited thereto, and the first side sheets and the second side sheets may not be arranged alternately. Description of Reference Numerals

[0053] 10: Power storage module 11: Laminated battery 11L: Battery stack 12: Electrode wire 12A: Connect electrode leads 12B: Output electrode wire 13: Joint 14: Output section 20: Wiring module 30: Terminal 31: Main body 32: Connection 34: Wire connection 40: Busbar 40A: Part 1 40B: Part 2 41: Busbar side connection 50: Protector 51: Protector body 52: Electrode storage recess 52A: Connection electrode storage recess 52B: Output electrode storage recess 53: Bus bar holding part 53A: Bolt fastening part 54: Terminal storage part 55: Layout Department 55A: Bottom wall 55B: Side wall 55C: Stopper 56: Laying out the groove 60: Storage 60A: Unit 1 60B: Unit 2 61: Bottom 62A: 1st side panel 62B: 2nd side panel 63A: 1st claw 63B: Second claw BM: Bundled components D1: Outer diameter of the first wire D2: The outer diameter of the second wire L1: The minimum distance between the first claw and the second claw in the front-to-back direction L2: The distance between a pair of locking pieces in the left-right direction S1: Space 1 S2: Second Space W1: 1st wire W2: 2nd wire

Claims

1. A wiring module mounted on a battery stack, wherein the battery stack is formed by stacking a plurality of storage elements having electrode terminals. The wiring module includes at least one first electric wire and a protector, wherein the protector includes a housing portion extending along a routing direction of the first electric wire and housing the first electric wire. The storage portion comprises: a bottom; at least one first side piece extending from one side edge of the bottom to a first direction orthogonal to the layout direction; at least one second side piece extending from the other side edge of the bottom to the first direction; at least one first space disposed adjacent to the first side piece in the layout direction; and at least one second space disposed adjacent to the second side piece in the layout direction. The first side sheet and the second side sheet are arranged so as not to overlap each other in a second direction orthogonal to both the laying direction and the first direction. The first side piece and the second side piece are capable of bending and deforming in the second direction. The second side piece side of the first side piece in the second direction faces the second space, The second side piece faces the first space on the side of the first side piece in the second direction. The first side piece includes a first claw portion protruding from an end edge of the first side piece in the first direction toward the second space side. The second side piece includes a second claw portion protruding from an end edge of the second side piece in the first direction toward the first space side. A minimum dimension between the first claw portion and the second claw portion in the second direction is smaller than an outer diameter of the first electric wire.

2. The wiring module according to claim 1, wherein: The first side sheets and the first spaces are alternately arranged in the layout direction. The second side sheets and the second spaces are alternately arranged in the laying direction.

3. The wiring module according to claim 1 or claim 2, wherein: The wiring module further includes a second electric wire different from the first electric wire, The protector includes a laying portion, and the second electric wire is laid in the laying portion along the laying direction. The layout portion includes a bottom wall portion and a pair of side wall portions extending from both side edges of the bottom wall portion in the second direction. The side wall portion also serves as the bottom portion.

4. The wiring module according to claim 1 or claim 2, wherein: The wiring module further includes a plurality of conductive members connected to the electrode terminals. The protector has a through hole penetrating in the second direction, The electrode terminal and the conductive member are connected via the through hole.

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