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] This disclosure relates to a wiring module.

Background Art

[0002] High-voltage battery packs used in electric vehicles, hybrid vehicles, etc. usually have a number of battery cells stacked and are electrically connected in series or in parallel by a wiring module. Conventionally, a wiring module described in Japanese Patent Application Laid-Open No. 2016-122577 (Patent Document 1 below) is known.

[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 an external device of the wiring module via an electric wire. The insulating protector has an electric wire accommodation groove for accommodating the electric wire. On the upper end edges of a pair of groove wall portions of the electric wire accommodation groove, a regulating piece that protrudes from one groove wall portion toward the other groove wall portion is provided. The regulating piece regulates the electric wire from jumping out of the electric wire accommodation groove. The regulating pieces are provided on both of the pair of groove wall portions, and a pair of corresponding regulating pieces are arranged so as to approach each other.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the above configuration, when accommodating the electric wire in the electric wire accommodation groove, it is necessary to bend the regulating piece to widen the interval between a pair of regulating pieces facing each other to be wider than the outer diameter of the electric wire and introduce the electric wire between the pair of regulating pieces.

[0006] In this type of wiring module, there is a need for a configuration that allows for easier routing of wires to the insulating protector. [Means for solving the problem]

[0007] The wiring module of the present disclosure is a wiring module to be attached to a battery stack composed of a plurality of energy storage elements having electrode terminals, and comprises at least one first electric wire and a protector having a housing portion that extends in the routing direction for routing the first electric wire and houses 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 and the routing direction, and at least one second space provided adjacent to the second side piece and the routing direction, and The wiring module is configured such that the wires do not 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 flexible in the second direction, the first side piece faces the second space on the second side piece side in the second direction, the second side piece faces the first space on the first side piece side in the second direction, the first side piece has a first claw portion that protrudes from the edge of the first side piece in the first direction toward the second space, the second side piece has a second claw portion that protrudes from the 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 wire. [Effects of the Invention]

[0008] According to this disclosure, a wiring module is available that facilitates the routing of the first electric wire. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a front view of an energy storage module according to an embodiment. [Figure 2] Figure 2 is an enlarged front view of the energy storage module showing the area around the wire housing. [Figure 3] Figure 3 is a cross-sectional view of AA in Figure 2. [Figure 4] Figure 4 is an enlarged side view of the energy storage module showing the area around the power line housing. [Figure 5] Figure 5 is an enlarged perspective view of the energy storage module showing the area around the wire housing. [Figure 6] Figure 6 is a perspective view of the front of the battery stack. [Figure 7] Figure 7 is a perspective view showing the main components of a laminated battery. [Figure 8] Figure 8 is an enlarged perspective view of a power storage module showing the area around the wire housing according to another embodiment. [Modes for carrying out the invention]

[0010] [Description of Embodiments in this Disclosure] First, the embodiments of this disclosure will be listed and described.

[0011] (1) The wiring module of the present disclosure is a wiring module to be attached to a battery stack comprising a plurality of energy storage elements having electrode terminals stacked together, and comprises at least one first electric wire and a protector having a housing portion that extends in the routing direction for routing the first electric wire and housing 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 and the routing direction, and at least one second space provided adjacent to the second side piece and the routing direction, and The second side piece is arranged so as not to overlap with the first side piece in a second direction perpendicular to both the wiring direction and the first direction, the first side piece and the second side piece are flexible in the second direction, the first side piece faces the second space on the side of the second side piece in the second direction, the second side piece faces the first space on the side of the first side piece in the second direction, the first side piece has a first claw portion that protrudes from the edge of the first side piece in the first direction toward the second space, the second side piece has a second claw portion that protrudes from the 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 and second side pieces can bend and deform in the second direction, making it easier to introduce the first electric wire into the housing by widening the gap between the first and second claws by bending either the first or second side piece. Furthermore, since the first and second side pieces are not positioned to face each other in the second direction, the amount of bending required of either the first or second side piece to introduce the first electric wire into the housing is reduced. Therefore, it is easier to house the first electric wire in the housing.

[0013] (2) Preferably, the first side piece and the first space are arranged alternately with respect to the cable routing direction, and the second side piece and the second space are arranged alternately with respect to the cable routing direction.

[0014] With such a configuration, since the first side piece and the second side piece are alternately arranged in the wiring direction, the first electric wire is easily held in the accommodating portion.

[0015] (3) The above wiring module further includes a second electric wire different from the first electric wire, the protector includes a wiring portion through which the second electric wire is wired in the wiring 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, and it is preferable that the side wall portion also serves as the bottom portion.

[0016] With such a configuration, in the protector, the space occupied by the accommodating portion for accommodating the first electric wire and the wiring portion for wiring the second electric wire can be reduced.

[0017] (4) The above wiring module further includes a plurality of conductive members connected to the electrode terminal, the protector has a through hole penetrating in the second direction, and it is preferable that the electrode terminal and the conductive member are connected through the through hole.

[0018] With such a configuration, although the protector and the battery laminate are assembled in the second direction, since the first side piece and the second side piece can be flexibly deformed in the second direction, even after the protector is assembled to the battery laminate, the first electric wire can be easily accommodated in the accommodating portion.

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

[0020] [Embodiment] Embodiments of this disclosure will be described with reference to Figures 1 to 7. The energy storage module 10 equipped with the wiring module 20 of this embodiment is mounted on a vehicle such as an electric vehicle or a hybrid vehicle and used as a power source for the vehicle. In the following description, for multiple identical components, only some components may be given reference numerals, and the reference numerals of other components may be omitted. In the following description, the direction indicated by arrow X is forward, the direction indicated by arrow Y is left, and the direction indicated by arrow Z is upward. In this embodiment, the up-down direction is an example of the wiring direction, the left-right direction is an example of the first direction, and the front-back direction is an example of the second direction.

[0021] [Battery stack] The energy storage module 10 comprises a battery stack 11L as shown in Figure 6 and a wiring module 20 attached to the battery stack 11L as shown in Figure 1.

[0022] [Laminated batteries, electrode leads] As shown in Figure 6, the battery stack 11L is composed of multiple laminate-type batteries 11 (an example of an energy storage element) stacked in the stacking direction (left-right direction) (18 in this embodiment). Note that only the front portion of the battery stack 11L is shown in Figure 6. As shown in Figure 7, the laminate-type battery 11 has a shape that is long in the front-to-back direction and flattened in the left-to-right direction. Energy storage elements (not shown) are housed inside the laminate-type battery 11. A pair of electrode leads 12 (an example of electrode terminals) are arranged on both sides of the laminate-type battery 11 in the front-to-back direction, protruding in opposite directions from each other. The pair of electrode leads 12 are plate-shaped and have opposite polarities from each other.

[0023] As shown in Figure 6, the battery stack 11L is provided with a junction 13 where the four electrode leads 12 of the laminate-type batteries 11, which are arranged continuously in the left-right direction, are electrically connected. That is, the four electrode leads 12 are bent at approximately right angles to the left or right, overlapped, and joined by laser welding to form the junction 13. The electrode leads 12 that make up the junction 13 are called connecting electrode leads 12A. Of the four connecting electrode leads 12A, the two connecting electrode leads 12A on the right and the two connecting electrode leads 12A on the left have opposite polarity. For example, the two connecting electrode leads 12A on the right are the positive electrodes, and the two connecting electrode leads 12A on the left are the negative electrodes. Therefore, in the battery stack 11L, the junction 13 connects two laminate-type batteries 11 that are connected in parallel in series. The battery stack 11L has four junctions 13 at its front. Although not shown in the diagram, the battery stack 11L also has four connecting parts 13 at its rear.

[0024] The battery stack 11L has an output section 14 at the front left end. Although not shown in the figures, the battery stack 11L also has an output section 14 at the rear right end. The output section 14 is formed by joining two electrode leads 12 that do not form a junction 13. The electrode leads 12 that make up the output section 14 are called output electrode leads 12B. The two output electrode leads 12B that make up one output section 14 have the same polarity. The output section 14 constitutes either 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, then the rear output section 14 is the overall negative electrode of the battery stack 11L.

[0025] [Wiring Module] As shown in Figure 1, the wiring module 20 of this embodiment includes a terminal 30 (an example of a conductive material) connected to the connecting electrode lead 12A, a busbar 40 (an example of a conductive material) connected to the output electrode lead 12B, a first wire W1, a second wire W2 connected to the terminal 30, and a protector 50 that holds the terminal 30, the busbar 40, the first wire W1, and the second wire W2. The configuration of the wiring module 20 arranged on the front side of the energy storage module 10 will be described in detail below. Although not shown, the wiring module 20 arranged on the rear side of the energy storage module 10 is configured similarly to the wiring module 20 arranged on the front side of the energy storage module 10.

[0026] The busbar 40 has a plate-like shape and is formed by processing a conductive metal plate. As shown in Figure 1, the busbar 40 comprises 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 to the right from the upper end of the first portion 40A and is flattened in the vertical direction. The busbar 40 is held by the 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 connector 41 has a through hole through which a bolt is inserted. An external connection terminal (not shown) is placed on top of the busbar-side connector 41 and bolted to the busbar-side connector 41. This electrically connects the busbar-side connector 41 to the external connection terminal. The external connection terminal is used to connect an external device (not shown) to the energy storage module 10.

[0028] The terminal 30 is made by processing a conductive metal plate. As shown in Figure 1, the terminal 30 comprises 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 configured to connect by surface contact with the joint 13 or a part of the connecting electrode lead 12A that constitutes the joint 13. In other words, the terminal 30 is not a member for connecting adjacent connecting electrode leads 12A, but a member for connecting a pre-connected connecting electrode lead 12A (joint 13) and the second wire W2. The wire connecting portion 34 has a crimping piece that is crimped onto the second wire W2.

[0029] [Second power line] One end of the second wire W2 is connected to terminal 30. Although not shown in Figure 1, the other end of the second wire W2 is connected to an external ECU (Electronic Control Unit) via a connector or the like. The ECU is a well-known type equipped with a microcomputer, elements, etc., and has functions for detecting the voltage, current, temperature, etc. of each laminate-type battery 11, and for controlling the charging and discharging of each laminate-type battery 11. In other words, the second wire W2 in this embodiment is a so-called voltage detection wire. The second wire W2 is arranged inside the routing section 55 and routing groove section 56 of the protector 50.

[0030] [First power line] The wiring module 20 includes a plurality (eight in this embodiment) of first wires W1. The first wires W1 are arranged inside the housing portion 60 and the wiring groove portion 56 of the protector 50. The first wires W1 are different from the second wires W2. The first 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 an insulating synthetic resin and is plate-shaped. As shown in Figure 1, the protector 50 includes a protector body 51 that is positioned relative to the battery stack 11L. In the center of the protector body 51 in the vertical direction, electrode housing recesses 52 (an example of through holes) are provided in parallel in the left-right direction. The electrode housing recesses 52 are formed to penetrate in the front-to-back direction and have a long rectangular shape in the vertical direction. The electrode housing recesses 52 consist of a connecting electrode housing recess 52A that receives the joint portion 13 and the connecting electrode lead 12A, and an output electrode housing recess 52B that receives the output electrode lead 12B and the output portion 14.

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

[0033] [Riding section] To the left of the connection electrode housing recess 52A, a cable routing section 55 is formed recessed to the rear of the protector body 51. The cable routing section 55 is groove-shaped and extends in the vertical direction. The cable routing section 55 communicates with the terminal housing section 54 below. The cable routing section 55 communicates with the cable routing groove section 56 above. As shown in Figure 2, the cable routing section 55 comprises a bottom wall section 55A and a pair of side wall sections 55B extending forward from both side edges of the bottom wall section 55A in the left-right direction. The cable routing section 55 of this embodiment is equipped with a pair of locking pieces 55C. The pair of locking pieces 55C extend from the front ends of the pair of side wall sections 55B, facing each other in the left-right direction and approaching each other. As shown in Figure 3, the pair of locking pieces 55C press the second electric wire W2 from the front, preventing the second electric wire W2 from coming out of the cable routing section 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] As shown in Figure 1, the cable routing grooves 56 are groove-shaped and extend in the left-right direction, and two are provided, similar to the cable routing section 55. Of the two cable routing grooves 56, the lower one communicates with the cable routing section 55 and accommodates multiple second electric wires W2. The upper cable routing groove 56 communicates with the housing section 60 and accommodates multiple first electric wires W1.

[0035] [Storage section, bottom, first side piece, second side piece] To the left of the second wiring section 55 from the right, there is a housing section 60 for housing the first electric wire W1. The housing section 60 has a groove-like shape with a portion of its side wall cut out. The housing section 60 extends in the wiring direction (up and down direction) for routing the first electric wire W1. As shown in Figures 2 to 5, the housing section 60 comprises a bottom section 61, a plurality (three in this embodiment) of first side pieces 62A, and a plurality (two in this embodiment) of second side pieces 62B. The first side pieces 62A extend to the left from the front side edge of the bottom section 61. The second side pieces 62B extend to the left from the rear side edge of the bottom section 61. The first side pieces 62A and the second side pieces 62B are arranged so as not to overlap each other in the front-rear direction. The first side pieces 62A and the second side pieces 62B are designed to bend and deform in the front-rear direction. As shown in Figure 3, the bottom portion 61 is the front four-fifths of the side wall portion 55B located to the left of the second cable routing portion 55 from the right.

[0036] [1st space] As shown in Figure 4, a first space S1 is provided in a position adjacent to the first side piece 62A in the left-right direction. The housing 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 positioned to face the first space S1 from the front.

[0037] [Second space] A second space S2 is provided in a position adjacent to the second side piece 62B in the left-right direction. The housing 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 positioned to face the second spaces S2 from the rear.

[0038] [First claw part, second claw part] The first side piece 62A has 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 substantially trapezoidal in side view and is formed to become narrower toward the front end (rear side). The second side piece 62B has 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 substantially trapezoidal in side view and is formed to become narrower toward the front end (front side). As shown in Figure 3, the minimum dimension L1 between the first claw portion 63A and the second claw portion 63B in the front-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 hold the first electric wire W1 from the left, preventing the first electric wire W1 from coming out of the housing portion 60.

[0039] In this embodiment, as shown in Figure 4, 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, the positional relationship between the first side piece 62A and the second side piece 62B is such that they are arranged alternately in a zigzag pattern in the vertical direction. This allows the first electric wire W1 to be stably housed in the housing section 60.

[0040] [Introduction of the first power line to the housing section] When introducing the first electric wire W1 into the housing section 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 instead of the first claw portion 63A and the second claw portion 63B, the introduction of the first electric wire W1 into the housing section 60 is easier compared to conventional configurations (such as the electric wire housing groove in Patent Document 1 or the wiring section 55 in this embodiment).

[0041] Furthermore, when housing the first electric wire W1 in the housing section 60, a side piece (first side piece 62A or second side piece 62B) is positioned 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 to the other side. For simplicity, a partial structure of the housing section 60 (referred to as the 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 that extends to the rear. Therefore, the amount of bending of the first side piece 62A required to house the first electric wire W1 in the first unit 60A is small. The same applies to the second unit 60B, which is a partial structure of the housing 60 having a second side piece 62B on the rear side and a first space S1 on the front side. Therefore, when introducing the first electric wire W1 into the housing 60, it is not necessary to bend the first side piece 62A and the second side piece 62B significantly, making it easier to house the first electric wire W1 in the housing 60.

[0042] On the other hand, unlike this embodiment, when the first and second side pieces are arranged facing each other in the front-rear direction, when introducing the first electric wire into the housing, the first and second side pieces must be bent so that both the first and second claw portions do not interfere with the first electric wire. The amount of bending of the first and second side pieces in this case will be greater 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 that is attached to a battery stack 11L which is composed of a plurality of energy storage elements (laminated batteries 11) equipped with electrode terminals (electrode leads 12) stacked together, and comprises at least one first electric wire W1 and a protector 50 which extends in the routing direction (up and down direction) for routing the first electric wire W1 and has a housing portion 60 for housing the first electric wire W1, the housing portion 60 comprises a bottom portion 61, at least one first side piece 62A extending from one (front) side edge of the bottom portion 61 in a first direction (left and right direction) perpendicular to the routing direction, at least one second side piece 62B extending from the other (rear) side edge of the bottom portion 61 in the first direction, at least one first space S1 provided adjacent to the first side piece 62A in the routing direction, and at least one space S1 provided adjacent to the second side piece 62B in the routing direction The cable also has a second space S2, and the first side piece 62A and the second side piece 62B are arranged so that they do not overlap with each other in a second direction (front-back direction) that is perpendicular to both the cable routing direction and the first direction, and the first side piece 62A and the second side piece 62B are capable of bending and deforming in the second direction, with the first side piece 62A facing the second space S2 on the side of the second side piece 62B in the second direction, and the second side piece 62B facing the first side piece 62 in the second direction The first side piece 62A faces the first space S1 on side A, and the first side piece 62A has a first claw portion 63A that protrudes toward the second space S2 from the edge of the first side piece 62A in a first direction, and the second side piece 62B has a second claw portion 63B that protrudes toward the first space S1 from the edge of the second side piece 62B in a first direction, and the minimum dimension L1 between the first claw portion 63A and the second claw portion 63B in a 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 can bend and deform in the second direction, so by bending the first side piece 62A or the second side piece 62B, the gap between the first claw portion 63A and the second claw portion 63B is widened, making it easier to introduce the first electric wire W1 into the housing portion 60. Also, since the first side piece 62A and the second side piece 62B are not positioned to face each other in the second direction, the amount of bending of the first side piece 62A or the second side piece 62B required to introduce the first electric wire W1 into the housing portion 60 is reduced. Therefore, it is easier to house the first electric wire W1 in the housing portion 60.

[0045] In this embodiment, the first side piece 62A and the first space S1 are arranged alternately in the cable routing direction, and the second side piece 62B and the second space S2 are arranged alternately in the cable routing direction.

[0046] With this configuration, the first side piece 62A and the second side piece 62B are arranged alternately in the routing direction, making it easier for the first electric wire W1 to be held within the housing 60.

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

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

[0049] The wiring module 20 according to this embodiment further comprises a plurality of conductive members (terminals 30 and busbars 40) connected to electrode terminals, and the protector 50 has through holes (electrode housing recesses 52) that penetrate in a second direction, and the electrode terminals and conductive members are connected through the through holes.

[0050] With this configuration, the protector 50 and the battery stack 11L are assembled in the second direction, but 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 housed in the housing 60 even after the protector 50 has been assembled to the battery stack 11L.

[0051] <Other Embodiments> (1) In the above embodiment, the multiple first wires W1 were housed in the housing section 60 without being bundled together, but the invention is not limited to this. For example, as shown in Figure 8, the wiring module 20 may further include a bundling member BM for bundling the multiple first wires W1, and the multiple first wires W1 bundled together by the bundling member BM may be housed in the housing section 60. Here, the bundling member BM can be a heat shrink tube, a corrugated tube, or the like. By bundling the multiple first wires W1 with the bundling member BM, the multiple first wires W1 can be housed together in the housing section 60.

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

[0053] 10: Energy storage module 11: Laminated batteries 11L: Battery stack 12: Electrode leads 12A: Connecting electrode lead 12B: Output electrode lead 13: Joint 14: Output section 20: Wiring module 30: Terminal 31: Main body 32: Connection part 34: Wire connection section 40: Bus bar 40A: 1st part 40B: 2nd part 41: Busbar side connection 50: Protector 51: Protector body 52: Electrode housing recess 52A: Recess for housing connecting electrode 52B: Output electrode housing recess 53: Busbar holder 53A: Bolt fastening section 54: Terminal housing section 55: Cable Distribution Section 55A: Bottom wall section 55B: Side wall part 55C: Locking piece 56: Cable routing groove 60: Detention area 60A: Unit 1 60B: Unit 2 61: Bottom 62A: First side piece 62B: Second side piece 63A: 1st claw part 63B: 2nd claw part BM: Binding member D1: Outer diameter of the first wire D2: Outer diameter of the second wire L1: Minimum dimension between the first claw portion and the second claw portion in the front-rear 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 composed of multiple energy storage elements equipped with electrode terminals, The device comprises at least one electric wire and a protector that extends in the routing direction of the electric wire and has a housing portion for housing the electric wire, The housing portion has a bottom and at least one side piece extending from both side edges of the bottom in a first direction perpendicular to the cable routing direction, The side pieces are arranged so as not to overlap with each other in a second direction that is perpendicular to both the cable routing direction and the first direction. The aforementioned side piece is made capable of bending and deforming in the second direction. The side piece is a wiring module having a claw portion that protrudes from the edge in the first direction.

2. The minimum distance 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. The system further comprises a second wire different from the aforementioned wire, The protector includes a routing section on which the second electric wire is routed in the routing direction, The cable routing section comprises a bottom wall and a pair of side wall sections extending in the second direction from both side edges of the bottom wall, The wiring module according to claim 1 or claim 2, wherein the side wall portion also serves as the bottom portion.

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

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