Wiring module

Abstract

To provide a wiring module that facilitates a work for routing wires.SOLUTION: A wiring module 20 is to be attached to a battery laminate 11L in which a plurality of power storage elements including electrode terminals are stacked, and includes at least one wire, and a protector 50 extending in a routing direction for routing the wire and including an accommodation part 60 to accommodate the wire. The accommodation part 60 includes a bottom part 61, and at least one side piece extending in a first direction that is orthogonal to the routing direction from each of both side edges of the bottom part 61. The side pieces are arranged so as not to overlap with each other in a second direction that is orthogonal to both the routing direction and the first direction, the side pieces are flexibly deformable in the second direction, and the side piece includes a claw part projecting from the side edge in the first direction.SELECTED DRAWING: Figure 5

Description

[Technical Field]

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

[0002] High-voltage battery packs used in electric vehicles, hybrid vehicles, etc. typically have a large number of stacked battery cells electrically connected in series or parallel by a wiring module. A conventional wiring module of this type is described in Japanese Patent Laid-Open Publication No. 2016-122577 (Patent Document 1 below).

[0003] The wiring module described in Patent Document 1 includes a bus bar, a temperature detection member, and an insulating protector that holds the bus bar and the temperature detection member. The bus bar and the temperature detection member are each connected to equipment external to the wiring module via electric wires. The insulating protector has a wire accommodating groove for accommodating the electric wire. A restricting piece that protrudes from one groove wall portion toward the other groove wall portion is provided on the upper edge of a pair of groove wall portions of the wire accommodating groove. The restricting piece prevents the electric wire from protruding from the wire accommodating groove. The restricting piece is provided on both of the pair of groove wall portions, and the corresponding pair of restricting pieces are arranged so as to approach each other. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-122577 Summary of the Invention [Problem to be solved by the invention]

[0005] In the above configuration, when storing an electric wire in the electric wire storage groove, it is necessary to bend the regulating pieces to widen the distance between the pair of opposing regulating pieces beyond the outer diameter of the electric wire, and then introduce the electric wire between the pair of regulating pieces.

[0006] In this type of wiring module, there is a demand for a configuration that allows the electric wires to be routed more easily to the insulating protector. [Means for solving the problem]

[0007] The wiring module of the present disclosure is a wiring module attached to a battery stack formed by stacking a plurality of power storage elements each having an electrode terminal, and includes at least one first electric wire and a protector extending in a wiring direction in which the first electric wire is routed and including a housing portion for accommodating the first electric wire, wherein the housing portion has a bottom portion, at least one first side piece extending from one side edge of the bottom portion in a first direction perpendicular to the routing direction, at least one second side piece extending from the other side edge of the bottom portion in the first direction, at least one first space provided adjacent to the first side piece in the routing direction, and at least one second space provided adjacent to the second side piece in the routing direction, and are arranged so as not to overlap each other in a second direction perpendicular to both the wiring direction and the first direction, the first side piece and the second side piece are flexibly deformable in the second direction, the first side piece faces the second space on its second side in the second direction, the second side piece faces the first space on its first side in the second direction, the first side piece has a first claw portion protruding from an edge of the first side piece in the first direction toward the second space, and the second side piece has a second claw portion protruding from an edge of the second side piece in the first direction toward the first space, and the minimum dimension between the first claw portion and the second claw portion in the second direction is smaller than the outer diameter of the first electric wire. [Effects of the Invention]

[0008] According to the present disclosure, it is possible to provide a wiring module that allows easy routing of the first electric wire. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a front view of an electricity storage module according to an embodiment. [Figure 2] FIG. 2 is an enlarged front view of the electricity storage module showing the periphery of the electric wire housing portion. [Figure 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. [Figure 4] FIG. 4 is an enlarged side view of the electricity storage module showing the periphery of the electric wire housing portion. [Figure 5] FIG. 5 is an enlarged perspective view of the electricity storage module showing the periphery of the electric wire housing portion. [Figure 6] FIG. 6 is a perspective view of the front of the battery stack. [Figure 7] FIG. 7 is a perspective view showing the main parts of a laminated battery. [Figure 8] FIG. 8 is an enlarged perspective view of an electricity storage module showing the periphery of an electric wire housing portion according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described.

[0011] (1) A wiring module according to the present disclosure is a wiring module attached to a battery stack formed by stacking a plurality of energy storage elements each having an electrode terminal, the wiring module including at least one first electric wire and a protector extending in a wiring direction in which the first electric wire is routed and including a housing portion for accommodating the first electric wire, the housing portion including a bottom portion, at least one first side piece extending from one side edge of the bottom portion in a first direction perpendicular to the routing direction, at least one second side piece extending from the other side edge of the bottom portion in the first direction, at least one first space provided adjacent to the first side piece in the routing direction, and at least one second space provided adjacent to the second side piece in the routing direction, and the first side piece and The second side pieces are arranged so as not to overlap with each other in a second direction perpendicular to both the wiring direction and the first direction, the first side piece and the second side piece are flexibly deformable in the second direction, the first side piece faces the second space on its second side in the second direction, the second side piece faces the first space on its first side in the second direction, the first side piece has a first claw portion protruding from an edge of the first side piece in the first direction toward the second space, and the second side piece has a second claw portion protruding from an edge of the second side piece in the first direction toward the first space, and the minimum dimension between the first claw portion and the second claw portion in the second direction is smaller than the outer diameter of the first electric wire.

[0012] With this configuration, the first side piece and the second side piece are flexible and deformable in the second direction, so that by bending the first side piece or the second side piece, the distance between the first claw portion and the second claw portion is widened, facilitating the operation of introducing the first electric wire into the accommodating portion. Furthermore, because the first side piece and the second side piece are not positioned opposite each other in the second direction, the amount of bending of the first side piece or the second side piece required to introduce the first electric wire into the accommodating portion is small. Therefore, it is easy to accommodate the first electric wire in the accommodating portion.

[0013] (2) It is preferable that the first side pieces and the first spaces are arranged alternately in the wiring direction, and the second side pieces and the second spaces are arranged alternately in the wiring direction.

[0014] According to this configuration, the first side pieces and the second side pieces are alternately arranged in the wiring direction, so that the first electric wire is easily held in the accommodating portion.

[0015] (3) Preferably, the wiring module further includes a second electric wire different from the first electric wire, the protector includes a wiring section in which the second electric wire is routed in the routing direction, the wiring section including a bottom wall section and a pair of side wall sections extending in the second direction from both side edges of the bottom wall section, and the side wall sections also serve as the bottom section.

[0016] According to this configuration, it is possible to reduce the space occupied by the housing portion in which the first electric wire is housed and the routing portion in which the second electric wire is routed in the protector.

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

[0018] With this configuration, the protector and the battery stack are assembled in the second direction, but the first side piece and the second side piece are flexible and deformable in the second direction, so even after the protector is assembled to the battery stack, it is easy to accommodate the first electric wire in the accommodating section.

[0019] [Details of the embodiments of the present disclosure] The present disclosure will be described below with reference to exemplary embodiments. The present disclosure is not limited to these examples, but is defined by the scope of the claims, and is intended to include all modifications within the meaning and scope of the claims.

[0020] <Embodiment> An embodiment of the present disclosure will be described with reference to FIGS. 1 to 7. An energy storage module 10 including a wiring module 20 of the present embodiment is mounted on a vehicle such as an electric vehicle or a hybrid vehicle and used as a drive source for the vehicle. In the following description, when multiple identical components are shown, only some of the components may be designated by reference numerals, and the reference numerals for the other components may be omitted. In the following description, the direction indicated by arrow X is the forward direction, the direction indicated by arrow Y is the leftward direction, and the direction indicated by arrow Z is the upward direction. In this embodiment, the up-down direction is an example of a wiring direction, the left-right direction is an example of a first direction, and the front-rear direction is an example of a second direction.

[0021] [Battery stack] The power storage module 10 includes a battery stack 11L shown in FIG. 6 and a wiring module 20 attached to the battery stack 11L as shown in FIG.

[0022] [Laminated battery, electrode lead] As shown in FIG. 6, the battery stack 11L is composed of multiple (18 in this embodiment) laminated batteries 11 (an example of an energy storage element) stacked in the stacking direction (left-right direction). Note that FIG. 6 only shows the front portion of the battery stack 11L. As shown in FIG. 7, the laminated battery 11 is long in the front-rear direction and flat in the left-right direction. An energy storage element (not shown) is housed 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-rear direction, protruding in opposite directions. The pair of electrode leads 12 are plate-shaped and have opposite polarities.

[0023] As shown in FIG. 6 , the battery stack 11L has a joint 13 electrically connecting the four electrode leads 12 of the laminated batteries 11 arranged in succession in the left-right direction. Specifically, the four electrode leads 12 are bent to the left or right at approximately right angles, overlapped, and joined by laser welding to form the joint 13. The electrode leads 12 that form the joint 13 are connection electrode leads 12A. Of the four connection electrode leads 12A, the two connection electrode leads 12A on the right side have opposite polarities to the two connection electrode leads 12A on the left side. For example, the two connection electrode leads 12A on the right side are positive electrodes, and the two connection electrode leads 12A on the left side are negative electrodes. Therefore, in the battery stack 11L, the joint 13 connects two laminated batteries 11 that are connected in parallel in series. The battery stack 11L has four joints 13 at its front. Although not shown, the battery stack 11L also has four joints 13 at its rear.

[0024] The battery stack 11L has an output section 14 at the left end of its front section. Although not shown, the battery stack 11L also has an output section 14 at the right end of its rear section. The output section 14 is formed by joining two of the electrode leads 12 that do not form a joint 13. The electrode lead 12 that forms the output section 14 is designated as an output electrode lead 12B. The two output electrode leads 12B that form one output section 14 have the same polarity. The output section 14 forms the positive or negative electrode of the entire battery stack 11L. That is, for example, if the front output section 14 is the overall positive electrode of the battery stack 11L, the rear output section 14 is the overall negative electrode of the battery stack 11L.

[0025] [Wiring module] 1, the wiring module 20 of this embodiment includes a terminal 30 (an example of a conductive member) connected to the connection electrode lead 12A, a bus bar 40 (an example of a conductive member) connected to the output electrode lead 12B, a first electric wire W1, a second electric wire W2 connected to the terminal 30, and a protector 50 that holds the terminal 30, the bus bar 40, the first electric wire W1, and the second electric wire W2. The configuration of the wiring module 20 arranged on the front side of the power storage module 10 will be described in detail below. Although not shown, the wiring module 20 arranged on the rear side of the power storage module 10 has the same configuration as the wiring module 20 arranged on the front side of the power storage module 10.

[0026] The busbar 40 has a plate-like shape and is formed by processing a conductive metal plate. As shown in FIG. 1 , the busbar 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 flattened in the front-rear direction. The second portion 40B extends rightward from the upper end of the first portion 40A and is also flattened in the vertical direction. The busbar 40 is held by a busbar holding portion 53 of the protector 50 and is connected to the output electrode lead 12B at the vertical center of the first portion 40A. A busbar-side connection portion 41 is provided at the right end of the second portion 40B.

[0027] Although not shown, the busbar side connection portion 41 has an insertion hole through which a bolt is inserted. An external connection terminal (not shown) is placed on top of the busbar side connection portion 41 and is fastened to the busbar side connection portion 41 with a bolt. In this way, the busbar side connection portion 41 is electrically connected to the external connection terminal. The external connection terminal is used to connect the energy storage module 10 to an external device (not shown).

[0028] The terminal 30 is formed by processing a conductive metal plate. As shown in FIG. 1 , the terminal 30 includes a main body 31, a connection portion 32 extending rightward from the main body 31, and an electric wire connection portion 34 extending upward from the main body 31. The main body 31 is accommodated and held in a terminal accommodating portion 54 of the protector 50. The connection portion 32 is adapted to be connected in surface contact with the joint portion 13 or a portion of the connection electrode lead 12A constituting the joint portion 13. In other words, the terminal 30 is not a member for connecting adjacent connection electrode leads 12A, but a member for connecting a previously connected connection electrode lead 12A (joint portion 13) to the second electric wire W2. The electric wire connection portion 34 has a crimping piece that is crimped to the second electric wire W2.

[0029] [Second wire] One end of the second electric wire W2 is connected to the terminal 30. Although not shown in FIG. 1, 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, elements, etc., and has a well-known configuration with 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. In other words, the second electric wire W2 in this embodiment is a so-called voltage detection wire. The second electric wire W2 is arranged inside the routing portion 55 and routing groove portion 56 of the protector 50.

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

[0031] [Protector] The protector 50 is made of insulating synthetic resin and has a plate shape. As shown in FIG. 1, the protector 50 includes a protector body 51 that is positioned relative to the battery stack 11L. Electrode accommodating recesses 52 (an example of through holes) are provided in the vertical center of the protector body 51, aligned in the left-right direction. The electrode accommodating recesses 52 are formed to penetrate in the front-to-rear direction and have a rectangular shape that is long in the vertical direction. The electrode accommodating recess 52 is composed of a connection electrode accommodating recess 52A that accommodates the joint portion 13 and the connection electrode lead 12A, and an output electrode accommodating recess 52B that accommodates the output electrode lead 12B and the output portion 14.

[0032] Busbar holding portions 53 for holding busbar 40 are provided on the upper and lower sides of output electrode accommodating recess 52B. A bolt fastening portion 53A for fastening busbar 40 with a bolt is provided on the right side of upper busbar holding portion 53. A terminal accommodating portion 54 for accommodating a part of terminal 30 is provided diagonally below and to the left of connection electrode accommodating recess 52A.

[0033] [Routing section] On the left side of the connection electrode accommodating recess 52A, a wiring portion 55 is formed recessed rearward from the protector body 51. The wiring portion 55 has a groove shape extending in the vertical direction. The wiring portion 55 communicates with the terminal accommodating portion 54 at its lower end. The wiring portion 55 communicates with the wiring groove portion 56 at its upper end. As shown in FIG. 2, the wiring portion 55 includes a bottom wall portion 55A and a pair of side wall portions 55B extending forward from both left-right edges of the bottom wall portion 55A. In this embodiment, the wiring portion 55 includes a pair of locking pieces 55C. The pair of locking pieces 55C extend toward each other in the left-right direction from the front ends of the pair of side wall portions 55B. As shown in FIG. 3, the pair of locking pieces 55C press the second electric wire W2 from the front, preventing the second electric wire W2 from slipping out of the wiring portion 55. The distance L2 between the pair of locking pieces 55C in the left-right direction is set to be smaller than the outer diameter D2 of the second electric wire W2.

[0034] 1, the wiring grooves 56 are groove-shaped and extend in the left-right direction, and two wiring grooves 56 are provided, similar to the wiring portions 55. Of the two wiring grooves 56, the lower wiring groove 56 communicates with the wiring portion 55 and accommodates a plurality of second electric wires W2. The upper wiring groove 56 communicates with the accommodation portion 60 and accommodates a plurality of first electric wires W1.

[0035] [Storage section, bottom, first side piece, second side piece] An accommodation section 60 for accommodating the first electric wire W1 is disposed to the left of the second-right routing section 55. The accommodation section 60 has a groove shape with a side wall portion partially cut out. The accommodation section 60 extends in the routing direction (vertical direction) in which the first electric wire W1 is routed. As shown in FIGS. 2 to 5 , the accommodation section 60 includes a bottom 61, a plurality of (three in this embodiment) first side pieces 62A, and a plurality of (two in this embodiment) second side pieces 62B. The first side piece 62A extends leftward from the front side edge of the bottom 61. The second side piece 62B extends leftward from the rear side edge of the bottom 61. The first side piece 62A and the second side piece 62B are disposed so as not to overlap each other in the front-rear direction. The first side piece 62A and the second side piece 62B are flexible and deformable in the front-rear direction. As shown in FIG. 3, the bottom portion 61 is a portion of approximately four-fifths of the front side of the side wall portion 55B arranged on the left side of the second wiring portion 55 from the right.

[0036] [1st space] As shown in Fig. 4, a first space S1 is provided at a position adjacent to the first side piece 62A in the left-right direction. The storage section 60 has two first spaces S1. The first space S1 is surrounded by the vertical side edges of the first side piece 62A and the front edge of the bottom 61. The second side piece 62B is disposed so as to face the first space S1 from the front.

[0037] [Second space] A second space S2 is provided at a position adjacent to the second side piece 62B in the left-right direction. The storage section 60 has three second spaces S2. The second spaces S2 are surrounded by the vertical side edges of the second side piece 62B and the rear edge of the bottom 61. The first side piece 62A is arranged so that its rear side faces the second spaces S2.

[0038] [First claw part, second claw part] The first side piece 62A has a first claw portion 63A protruding from its left edge toward the second space S2 (rear side). The first claw portion 63A has a generally trapezoidal shape in side view, and is formed to narrow toward the tip side (rear side). The second side piece 62B has a second claw portion 63B protruding from its left edge toward the first space S1 (front side). The second claw portion 63B has a generally trapezoidal shape in side view, and is formed to narrow toward the tip side (front side). As shown in FIG. 3 , the minimum dimension L1 between the first claw portion 63A and the second claw portion 63B in the front-to-rear direction is set to be smaller than the outer diameter D1 of the first electric wire W1. The first claw portion 63A and the second claw portion 63B press the first electric wire W1 from the left side to prevent the first electric wire W1 from slipping out of the accommodating portion 60.

[0039] 4, in this embodiment, the first side pieces 62A and the first spaces S1 are arranged alternately in the vertical direction, and the second side pieces 62B and the second spaces S2 are arranged alternately in the vertical direction. That is, the first side pieces 62A and the second side pieces 62B are arranged alternately in a zigzag pattern in the vertical direction. This allows the first electric wire W1 to be stably accommodated in the accommodating portion 60.

[0040] [Introduction of the first wire into the housing] When introducing the first electric wire W1 into the accommodating portion 60, the first side piece 62A is bent forward and the second side piece 62B is bent backward. This widens the gap between the first claw portion 63A and the second claw portion 63B, allowing the first electric wire W1 to be introduced between the first claw portion 63A and the second claw portion 63B. In other words, since the first side piece 62A and the second side piece 62B can be bent, rather than the first claw portion 63A and the second claw portion 63B, it is easier to introduce the first electric wire W1 into the accommodating portion 60 than with conventional configurations (such as the electric wire accommodating groove of Patent Document 1 and the wiring portion 55 of this embodiment).

[0041] When the first electric wire W1 is accommodated in the accommodating section 60, a side piece (first side piece 62A or second side piece 62B) is arranged on one side in the front-rear direction of the first electric wire W1, and a space (second space S2 or first space S1) extends on the other side. For simplicity, a partial structure of the accommodating section 60 (referred to as a first unit 60A) having the first side piece 62A on the front side and the second space S2 on the rear side will be described. 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 portion 63A of the first side piece 62A does not interfere with the first electric wire W1. At this time, the first electric wire W1 may enter the second space S2 extending rearward. Therefore, the amount of bending of the first side piece 62A required to accommodate the first electric wire W1 in the first unit 60A is small. The same can be said for the second unit 60B, which is a partial structure of the accommodating section 60 and has the second side piece 62B on the rear side and the first space S1 on the front side. Therefore, when introducing the first electric wire W1 into the accommodating section 60, it is not necessary to significantly bend the first side piece 62A and the second side piece 62B, which makes it easier to accommodate the first electric wire W1 in the accommodating section 60.

[0042] On the other hand, unlike the present embodiment, when the first side piece and the second side piece are arranged opposite each other in the front-rear direction, when the first electric wire is introduced into the accommodating section, the first side piece and the second side piece must be bent so that both the first claw portion and the second claw portion do not interfere with the first electric wire. In this case, the amount of bending of the first side piece and the second side piece becomes larger than the amount of bending described above.

[0043] [Effects of the embodiment] According to the embodiment, the following actions and effects are achieved. The wiring module 20 according to the embodiment is a wiring module 20 attached to a battery stack 11L formed by stacking a plurality of power storage elements (laminated batteries 11) each having an electrode terminal (electrode lead 12), and includes at least one first electric wire W1 and a protector 50 extending in a wiring direction (vertical direction) in which the first electric wire W1 is routed and including a storage section 60 for accommodating the first electric wire W1. The storage section 60 includes a bottom 61, at least one first side piece 62A extending from one side edge (front side) of the bottom 61 in a first direction (left-right direction) perpendicular to the wiring direction, at least one second side piece 62B extending from the other side edge (rear side) of the bottom 61 in the first direction, at least one first space S1 provided adjacent to the first side piece 62A in the wiring direction, and at least one second space S2 provided adjacent to the second side piece 62B in the wiring direction. The first side piece 62A and the second side piece 62B are arranged so as not to overlap with each other in a second direction (front-rear direction) perpendicular to both the wiring direction and the first direction, and the first side piece 62A and the second side piece 62B are flexible and deformable in the second direction, and the first side piece 62A faces the second space S2 on the side of the second side piece 62B in the second direction, and the second side piece 62B faces the first side piece 62A in the second direction. The first side piece 62A faces the first space S1 on side A, and has a first claw portion 63A that protrudes from the edge of the first side piece 62A in the first direction toward the second space S2, and the second side piece 62B has a second claw portion 63B that protrudes from the edge of the second side piece 62B in the first direction toward the first space S1, 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 electric wire W1.

[0044] With this configuration, the first side piece 62A and the second side piece 62B are flexible and deformable in the second direction, and thus by bending the first side piece 62A or the second side piece 62B, the distance between the first claw portion 63A and the second claw portion 63B is widened, facilitating the operation of introducing the first electric wire W1 into the accommodating portion 60. Furthermore, because the first side piece 62A and the second side piece 62B are not positioned opposite each other in the second direction, the amount of flexure of the first side piece 62A or the second side piece 62B required to introduce the first electric wire W1 into the accommodating portion 60 is reduced. Therefore, the first electric wire W1 can be easily accommodated in the accommodating portion 60.

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

[0046] With this configuration, the first wires W1 are easily held in the accommodating portion 60 because the first side pieces 62A and the second side pieces 62B are alternately arranged in the wiring direction.

[0047] The wiring module 20 in the embodiment further includes a second electric wire W2 different from the first electric wire W1, and the protector 50 includes a wiring section 55 in which the second electric wire W2 is routed in the routing direction, and the routing section 55 includes a bottom wall section 55A and a pair of side wall sections 55B extending in a second direction from both side edges of the bottom wall section 55A, and the side wall sections 55B also serve as the bottom section 61.

[0048] With this configuration, in the protector 50, the space occupied by the housing portion 60 in which the first electric wire W1 is housed and the routing portion 55 in which the second electric wire W2 is routed can be reduced.

[0049] The wiring module 20 in the embodiment further includes a plurality of conductive members (terminals 30 and bus bars 40) connected to the electrode terminals, and the protector 50 has a through hole (electrode accommodating recess 52) that penetrates in the second direction, so that the electrode terminals and the conductive members are connected via the through hole.

[0050] With this configuration, the protector 50 and the battery stack 11L are assembled in the second direction, but because the first side piece 62A and the second side piece 62B are flexible and deformable in the second direction, it is easy to accommodate the first electric wire W1 in the accommodating section 60 even after the protector 50 is assembled to the battery stack 11L.

[0051] <Other embodiments> (1) In the above embodiment, the multiple first electric wires W1 are accommodated in the accommodation section 60 in an unbound state, but this is not limited to this. For example, as shown in FIG. 8 , the wiring module 20 may further include a bundling member BM that bundles the multiple first electric wires W1, and the multiple first electric wires W1 bundled with the bundling member BM may be accommodated in the accommodation section 60. Here, the bundling member BM may be a heat-shrinkable tube, a corrugated tube, or the like. By bundling the multiple first electric wires W1 with the bundling member BM, the multiple first electric wires W1 can be accommodated collectively in the accommodation section 60.

[0052] (2) In the above embodiment, the second electric wire W2 is a voltage detection wire, and the first electric wire W1 has a different configuration from the second electric wire W2. However, this is not limited to this, and the first electric wire may be a voltage detection wire. (3) In the above embodiment, the side wall portion 55B of the wiring portion 55 also serves as the bottom portion 61 of the storage portion 60, but this is not limited to this. For example, the wiring portion may not be provided, or the wiring portion may be provided but its side wall portion may not include the bottom portion of the storage portion. (4) In the above embodiment, the first side pieces 62A and the second side pieces 62B were arranged alternately in a zigzag pattern, but this is not limited to this, and the first side pieces and the second side pieces do not have to be arranged alternately. [Explanation of symbols]

[0053] 10: Energy storage module 11: Laminated battery 11L: Battery stack 12: Electrode lead 12A: Connecting electrode lead 12B: Output electrode lead 13: Joint 14: Output section 20: Wiring module 30: Terminal 31: Main body 32: Connection 34: Wire connection 40: Busbar 40A: 1st part 40B: 2nd part 41: Busbar side connection 50: Protector 51: Protector body 52: Electrode receiving recess 52A: Connection electrode receiving recess 52B: Output electrode receiving recess 53: Busbar holder 53A: Bolted joint 54: Terminal housing 55: Wiring section 55A: Bottom wall 55B: Side wall part 55C: Locking piece 56: Wiring groove 60: Storage unit 60A: 1st unit 60B: Second unit 61: Bottom 62A: First side piece 62B: Second side piece 63A: 1st claw part 63B: 2nd claw part BM: Binding material D1: Outer diameter of the first wire D2: outer diameter of the second wire L1: Minimum distance between the first and second claws in the front-to-back direction L2: The distance between the pair of locking pieces in the left-right direction S1: 1st space S2: 2nd space W1: First wire W2: Second wire

Claims

1. A wiring module attached to a battery stack configured by stacking a plurality of storage elements each having an electrode terminal, The protector includes at least one electric wire and a housing portion extending in a wiring direction of the electric wire and housing the electric wire, The storage portion has a bottom portion and at least one side piece extending from each of both side edges of the bottom portion in a first direction perpendicular to the wiring direction, The side pieces are arranged so as not to overlap each other in a second direction perpendicular to both the wiring direction and the first direction, The side piece is flexible and deformable in the second direction, The side piece has a claw portion protruding from an edge in the first direction.

2. The minimum dimension between the claw portions is smaller than the outer diameter of the electric wire, The wiring module according to claim 1 , wherein the side pieces are arranged alternately in the wiring direction.

3. Further comprising a second electric wire different from the electric wire; the protector includes a wiring portion in which the second electric wire is routed in the routing direction, The wiring portion includes a bottom wall portion and a pair of side wall portions extending in the second direction from both side edges of the bottom wall portion, The wiring module according to claim 1 or 2, wherein the side wall portion also serves as the bottom portion.

4. further comprising a plurality of conductive members connected to the electrode terminals; the protector has a through-hole penetrating in the second direction, 3. The wiring module according to claim 1, wherein the electrode terminal and the conductive member are connected via the through hole.

Images