JP2014165043A - Wiring module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiring module that can be downsized.SOLUTION: A wiring module 10 comprises: a plurality of connection members 40 each connecting between adjacent electrode terminals 13A and 13B of a plurality of power storage elements 11 each having positive and negative electrode terminals 13A and 13B; and a resin protector 20 provided with a holding part 23 holding the connection member 40 and made of an insulation resin. A surrounding wall 25 surrounding the circumference of the connection member 40 is provided at the holding part 23. The surrounding wall 25 is provided with: a locking piece 26 formed by cutting off a part of the surrounding wall 25 and locking one edge part 40B of the connection member 40; and a slip-off prevention protrusion part 28 formed so as to be protruded inward in an opposed wall part 25A arranged along an opposed edge part 40C opposed to the one edge part 40B of the connection member 40, of the surrounding wall 25 to prevent slip-off by pressing the opposed edge part 40C of the connection member 40.

Description

  The present invention relates to a wiring module.

  In battery modules for electric vehicles and hybrid vehicles, a plurality of unit cells having positive and negative electrode terminals are arranged side by side, and electrode terminals of adjacent unit cells are connected by a connecting member such as a bus bar. Thus, a plurality of single cells are connected in series or in parallel (see, for example, Patent Document 1).

  In Patent Document 1, in order to simplify the work of connecting a plurality of unit cells, a wiring module formed by connecting a plurality of connection units each having a holding unit that holds a connection member is attached to the plurality of unit cells. Yes.

  In the wiring module described in Patent Document 1, the holding portion includes an enclosing wall that surrounds the four sides of the connection member. A pair of opposing walls disposed at opposing positions in the surrounding wall is provided with a locking piece for accommodating and holding the connection member.

JP 2013-4186 A

  As described in Patent Document 1, when a locking piece is provided on the surrounding wall constituting the holding portion of the wiring module, the locking piece is at least locked in consideration of a bending allowance for locking the connection member. It is necessary to set the height of the surrounding wall of the portion where the piece is provided to be high.

  In addition, since a slit is formed around the locking piece when the locking piece is provided on the surrounding wall, a structure for preventing a short circuit due to contact between the connection member exposed from the slit and another conductive member, etc. However, as described in Patent Document 1, when an auxiliary wall is provided outside the slit for the purpose of ensuring insulation, there is a problem that the holding portion is enlarged due to the auxiliary wall. there were.

  The present invention has been completed based on the above circumstances, and an object thereof is to provide a miniaturized wiring module.

  The present invention includes a plurality of connection members that connect adjacent electrode terminals of a plurality of power storage elements having positive and negative electrode terminals, and a resin protector made of an insulating resin provided with a holding portion that holds the connection members. The holding portion is provided with a surrounding wall that surrounds the periphery of the connecting member, and the surrounding wall is formed by cutting out a part of the surrounding wall and engages one edge of the connecting member. A locking piece to be stopped and an opposing wall portion disposed along an opposing edge portion of the surrounding wall facing the one edge portion of the connecting member, and projecting inwardly, and facing edge portions of the connecting member The wiring module is provided with a retaining projection that retains the retaining member by pressing the pin.

  In the present invention, the opposing edge of the connecting member is inserted into the retaining protrusion side of the surrounding wall and prevented from being detached by the retaining protrusion, and then the one edge of the connecting member is pushed into the locking piece of the surrounding wall. By engaging with the connecting member, the connecting member is housed in the holding portion of the resin protector and is held in a retaining state.

  Therefore, in the present invention, the connection member is exposed only on the side of the surrounding wall of the holding portion where the one edge portion of the connection member is disposed, so that it is related to the pair of opposite edge portions (two edge portions) of the connection member. The portion where the connecting member is exposed from the holding portion can be reduced as compared with the case where the stop piece is provided. As a result, according to the present invention, it is possible to reduce the structure for ensuring the insulation of the connection member, and the wiring module can be reduced in size.

The present invention may have the following configurations.
The opposing edge portion of the connection member may be provided with an overhang portion that protrudes outward and is prevented from being detached by the retaining protrusion of the surrounding wall.
With such a configuration, the protruding portion of the connecting member is pressed by the retaining protrusion of the surrounding wall, so that the connecting member is reliably prevented from coming off.

The resin protector may be attached to the power storage element with the facing wall portion side of the surrounding wall disposed outside.
With such a configuration, since the opposing wall portion side where the connection member is not exposed is arranged on the outside, the effect of preventing contact between the connection member and the conductive member is enhanced.

A detection terminal connected to the electrode terminal for detecting the state of the storage element; an electric wire connected to the detection terminal; and a resin-made electric wire storage portion for storing the electric wire, wherein the electric wire storage portion is You may provide in the side in which the said locking piece of the surrounding wall is formed.
With such a configuration, the electric wire housing part is provided on the side of the surrounding wall where the connection member is exposed, and the electric wire housing part also functions as a member for ensuring the insulation of the connecting member. There is no need to provide a separate structure for ensuring the insulation of the connecting member.

  According to the present invention, a miniaturized wiring module can be provided.

The partial top view of the battery module which attached the wiring module of Embodiment 1 Partial plan view of wiring module Partial sectional view taken along line AA in FIG. Partial sectional view taken along line BB in FIG. Partial enlarged perspective view of the surrounding wall Top view of connecting member Partial sectional view showing how to attach the connecting member Partially enlarged plan view of the wiring module of Embodiment 2 Partial sectional view taken along line CC in FIG.

<Embodiment 1>
Embodiment 1 of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the wiring module 10 of the present embodiment is attached to a single battery group 12 (electric storage element group) in which a plurality of single cells 11 (an example of an electric storage element) are arranged to constitute a battery module M. Is. The battery module M is used as a drive source of an electric vehicle or a hybrid vehicle, for example. In the following description, the upper part of FIG.

  As shown in FIG. 1, the battery module M includes a plurality of unit cells 11 arranged side by side and a wiring module 10 attached to the plurality of unit cells 11, for example.

  The unit cell 11 includes nut-shaped positive and negative electrode terminals 13A and 13B and a nut-shaped intermediate electrode 14 projecting vertically from an end face of a rectangular parallelepiped body portion in which a power generation element (not shown) is accommodated.

  The polarities (positive and negative) of each unit cell 11 are arranged so as to be opposite to each other in the unit cells 11 adjacent to each other, whereby the electrode terminals 13A and 13B having different polarities are adjacent to each other. ing. The plurality of single cells 11 are fixed by a holding plate (not shown).

  As shown in FIG. 2, the wiring module 10 includes a plurality of connecting members 40 that connect between the electrode terminals 13 </ b> A and 13 </ b> B adjacent to the left and right, and the voltage of the unit cell 11 that is overlapped with each connecting member 40 and connected to the electric wire W <b> 1. A plurality of voltage detection terminals 45 (an example of detection terminals), a plurality of intermediate voltage detection terminals 48, and a resin protector 20 made of a synthetic resin that houses the connection member 40, the voltage detection terminals 45, and the intermediate voltage detection terminals 48. With.

  The connection member 40 is a flat plate member made of a metal such as copper, a copper alloy, or aluminum. The connection member 40 is formed with an insertion hole 41 through which a shaft portion of a bolt as a fastening member is inserted. The insertion hole 41 has an oval shape that is long in the arrangement direction of the cells 11.

  In the pair of edges in the short side direction of the connecting member 40, the space between the corner portion 40A and the corner portion 40A is notched. In the pair of end edges 40B and 40C in the longitudinal direction of the connecting member 40, portions that are adjacent to the corner portion 40A and that are closer to the outside than the center P of the insertion hole 41 are cut out. Of the pair of edges 40B, 40C in the longitudinal direction of the connecting member 40, in the edge 40C arranged outside when held by the resin protector 20, in the region closer to the inside than the center P of the insertion hole 41, A projecting portion 42 is formed to project outward from the corner portion 40A (see FIGS. 2 and 6). In FIG. 6, a portion indicated by a two-dot chain line is a region where the electrode terminals 13 </ b> A and 13 </ b> B are arranged when the connection member 40 is attached to the unit cell 11.

  The voltage detection terminal 45 is provided for measuring the voltage of the unit cell 11 and is connected to the rectangular flat plate portion 46 and the terminal portion of the electric wire W1 connected to the flat plate portion 46 as shown in FIG. The connection part 47 is comprised.

  The flat plate portion 46 has four corners, and has a circular insertion hole 46 </ b> A that communicates with the insertion hole 41 of the connection member 40 (having the same central axis) at the center. The connecting portion 47 is formed in a stepped shape with a narrow width from the short side (short diameter) side of the flat plate portion 46, and the insulating coating (insulating layer) is peeled off at the terminal portion of the electric wire W <b> 1. The exposed conductor exposed by removal is connected by crimping or the like.

  The intermediate voltage detection terminal 48 is for measuring the voltage at the intermediate portion of the unit cell 11 and, as shown in FIG. 1, a plate-like rectangular portion 48A smaller than the flat plate portion 46 of the voltage detection terminal 45 and A crimping part 48C that is connected to the rectangular part 48A and is crimped to the exposed conductor exposed by peeling and removing the insulating coating at the end of the electric wire W2. The rectangular portion 48A has an insertion hole 48B through which the shaft portion of the bolt can be inserted at the center.

  The electric wire W1 connected to the voltage detection terminal 45 and the electric wire W2 connected to the intermediate voltage detection terminal 48 are collected in the electric wire housing portion 32 described later and guided to a battery ECU (not shown) on the right side in FIG. The battery ECU is equipped with a microcomputer, an element, and the like, and has a function for detecting voltage, current, temperature, etc. of the unit cells 11 and controlling charge / discharge of each unit cell 11. Of the configuration.

  As shown in FIG. 2, the resin protector 20 includes a plurality of holding portions 23 for holding the connection members 40, a terminal accommodating portion 34 for accommodating the intermediate voltage detection terminal 48, and an electric wire through which the electric wires W1 and W2 are passed. And a housing portion 32.

  Specifically, in the resin protector 20, the plurality of holding portions 23 are arranged on the outermost side along the arrangement direction of the unit cells 11, and the electric wire accommodating portion 32 is arranged on the inner side of the holding portion 23, and two electric wire accommodating portions. A plurality of terminal accommodating portions 34 are arranged along the direction in which the single cells 11 are arranged. The resin protector 20 includes a plurality of connection units 21 including a holding portion 23, an electric wire storage portion 32, and a terminal storage portion 34. The resin protectors 20 are integrated by connecting the connection portions 22 of the connection units 21, and adjacent connection units. 21 electric wire accommodating parts 32 are connected.

  The plurality of holding portions 23 are provided in a row on the outermost side (upper side and lower side in FIG. 1) of the resin protector 20, and both the bottom wall 24 on which the connection member 40 is placed, And the surrounding wall 25 surrounding the periphery of the connecting member 40.

  The bottom wall 24 has an intermediate support portion (not shown) for connecting the base end portions of the pair of surrounding walls 25 arranged in the direction in which the cells 11 are arranged in the central portion of the holding portion 23, and the left and right sides shown in FIG. At the end portion, the bottom edge portion slightly protrudes inward from the base end of the surrounding wall 25, and the electrode terminals 13 </ b> A and 13 </ b> B are arranged in a portion without the bottom wall 24.

  The surrounding wall 25 is a connecting member at a height at which contact of the tool or the like is prevented in order to prevent a tool or the like (an example of a conductive member) from coming into contact with the electrode terminals 13A and 13B and the connecting member 40 and short-circuiting. The connection member 40 is erected in a rectangular tube shape so as to surround the connection member 40.

  As shown in FIG. 2, the surrounding wall 25 is provided with recesses 27 </ b> A, 27 </ b> B, 27 </ b> C into which corners of the flat plate portion 46 of the voltage detection terminal 45 are fitted from above, and the voltage detection terminal 45. A through hole (not shown) through which the other corner is inserted is provided.

  The recesses 27A, 27B, and 27C are provided at a height position (position of the upper surface of the connection member 40) where the voltage detection terminal 45 is placed, and the axis of the voltage detection terminal 45 (the center in the width direction of the flat plate portion 46). ) Direction is arranged in a direction of about 45 ° with respect to the arrangement direction of the cells 11 (left and right direction in FIG. 1), and the flat plate portion 46 can be positioned.

  As shown in FIG. 2, the recesses 27 </ b> A, 27 </ b> B, and 27 </ b> C are formed by cutting out the upper surface and the inner surface of the surrounding wall 25 so that the three corners of the flat plate portion 46 can be fitted and positioned. The concave portions 27 </ b> B and 27 </ b> C have a shape in which the surrounding wall 25 wraps around the outside of the corner portion of the flat plate portion 46 in a frame shape so that the corner portion of the flat plate portion 46 is not exposed to the outside of the surrounding wall 25. ing.

  The through hole is a through hole penetrating in a slit shape through which the corner portion of the flat plate portion 46 can pass, and is opened with a diameter (upper and lower diameters) slightly larger than the thickness of the flat plate portion 46.

  An auxiliary wall 31 is provided on the outer surface side of the through hole penetrating the surrounding wall 25, and the entire through hole is covered by the auxiliary wall 31. The auxiliary wall 31 is formed at a predetermined interval with respect to the outer surface of the surrounding wall 25, and a corner portion of the flat plate portion 46 penetrating the through hole is arranged inside the auxiliary wall 31. The auxiliary wall 31 is continuous with the surrounding wall 25.

  Further, a through groove 30 through which the connecting portion 47 of the voltage detection terminal 45 is passed is recessed at a position including the corner portion of the surrounding wall 25 in the holding portion 23. The through groove 30 is formed with a pair of clamping pieces 30 </ b> A that clamp the connection portion 47 of the voltage detection terminal 45 from both sides. The through groove 30 is provided at a corner of the holding portion 23 on the side of the electric wire housing portion 32 so as to communicate (join) with the electric wire housing portion 32 from an oblique direction.

  Among the holding portions 23 arranged on the near side in FIG. 1, the voltage detection terminal 45 attached to the holding portion 23A at the left end is connected to other voltage detection terminals 45 as shown in FIGS. The electric wires W1 are extended in different directions. Accordingly, the recesses 27A, 27B, 27C into which the corners of the voltage detection terminal 45 provided in the surrounding wall 25 are fitted and the through holes through which the corners are passed are also arranged at positions different from those of the other holding parts 23. Yes.

  The surrounding wall 25 includes a pair of wall portions 25A and 25B extending in the arrangement direction of the cells 11 and a pair of side wall portions 25C and 25D provided on the left and right in FIG. Of the pair of wall portions 25A, 25B extending in the direction in which the cells 11 are arranged in the surrounding wall 25, the wall portion 25A arranged on the outer side is the first wall portion 25A, and is arranged on the inner side (the wire housing portion 32 side). The wall portion 25B is referred to as a second wall portion 25B.

  One edge of the connecting member 40 in the longitudinal direction (one edge portion 40B) is arranged on the second wall portion 25B of the surrounding wall 25. The approximate center of the second wall portion 25B is the surrounding wall 25. Protrudes inside. As shown in FIG. 3 and FIG. 7, a locking piece 26 that can be bent and deformed in the outward direction to restrict the detachment of the connecting member 40 is provided at the approximate center of the second wall portion 25B. The locking piece 26 is formed by cutting out a part of the second wall portion 25B into a slit shape. By disposing the connecting member 40 below the locking projection 26A that protrudes inside the locking piece 26, the detachment of the connecting member 40 is restricted. FIG. 5 shows a portion including the locking piece 26, and 26 </ b> B in FIG. 5 is a slit formed to provide the locking piece 26.

  Of the pair of end edges in the longitudinal direction of the connecting member 40, an opposing edge 40 </ b> C that faces the one edge 40 </ b> B is disposed on the first wall 25 </ b> A of the surrounding wall 25 (the first wall). The part 25A is an example of an opposing wall part). At the approximate center of the first wall portion 25A, there is formed a retaining protrusion 28 that protrudes inward from the inner wall surface and that holds the opposing edge portion 40C of the connecting member 40 to prevent it from coming off. In the present embodiment, the overhanging portion 42 of the connecting member 40 is arranged on the first wall portion 25 </ b> A of the surrounding wall 25.

  As shown in FIG. 2, the terminal housing portion 34 is formed so that a mounting recess 35 in which the intermediate voltage detection terminal 48 is mounted is connected to the electric wire housing portion 32. A rectangular hole for connecting to the electrode 14 is opened. The intermediate voltage detection terminal 48 is attached to the attachment recess 35, and the electric wire W <b> 2 is passed through the electric wire housing portion 32.

  The electric wire housing part 32 is provided with a pair of claw parts 33 for holding the electric wires W1, W2 in the electric wire housing part 32 so as to face the upper part.

Next, a method for assembling the wiring module 10 will be described.
The resin protector 20 is formed by connecting a plurality of connecting units 21 to the left and right. Next, the intermediate voltage detection terminal 48 connected to the connection member 40 and the terminal of the electric wire W <b> 2 is attached to the holding portion 23 and the terminal accommodating portion 34 of the resin protector 20.

  The connection member 40 is attached to the holding portion 23 as follows. As shown in FIG. 7, the facing edge portion 40C of the connecting member 40 is arranged on the first wall portion 25A side, and the connecting member 40 is inserted (inserted) below the retaining projection 28 provided on the first wall portion 25A. For directions, see arrow line X), and push one edge 40B of connecting member 40 in the direction indicated by arrow Y. When the one edge 40B of the connecting member 40 abuts on the locking piece 26 and the locking piece 26 is bent and deformed outward, the one edge 40B of the connecting member 40 is arranged below the locking piece 26. The locking piece 26 is elastically restored and the connecting member 40 is locked. At this time, the overhanging portion 42 of the opposing edge portion 40C of the connecting member 40 is prevented from being detached by the retaining projection 28 (see FIG. 3). Similarly, each connection member 40 is attached to the holding portion 23.

  Then, the wiring module 10 is formed by fitting the recesses 27A, 27B, and 27C into the recesses 27A, 27B, and 27C while passing the corners of the voltage detection terminals 45 through the through holes, and passing the wires W1 and W2 through the wire housing portion 32 ( (See FIG. 2).

  Next, the wiring module 10 is attached from above the unit cell group 12 in which the plurality of unit cells 11 are arranged. When the wiring module 10 is attached to the unit cell group 12, the insertion hole 41 of the connection member 40, the insertion hole 46A of the voltage detection terminal 45, and the insertion hole 48B of the intermediate voltage detection terminal 48 are connected to the plurality of unit cells 11 (unit cell group). The wiring module 10 is attached to the plurality of single cells 11 in accordance with the positions of the bolt holes of all the electrode terminals 13A, 13B of 12). The battery module M is obtained by attaching the wiring module 10 to the unit cell group 12 and screwing bolts into all of the nut-like electrode terminals 13A and 13B.

According to the structure of the said embodiment, there exist the following effects.
In the present embodiment, the opposing edge portion 40C of the connecting member 40 is inserted into the first wall portion 25A side (the retaining projection portion 28 side) of the surrounding wall 25, and after the retaining projection portion 28 prevents the connection, The connection member 40 is accommodated in the holding portion 23 of the resin protector 20 and held in a state of being prevented from being pulled out by pushing in the one edge portion 40B of the member 40 and locking it with the locking piece 26 of the surrounding wall 25.

  Therefore, in this embodiment, since the connection member 40 is exposed only on the side (the second wall portion 25B side) where the one edge portion 40B of the connection member 40 is disposed in the surrounding wall 25 of the holding portion 23, the connection member 40 is exposed. There are fewer exposed portions of the connection member 40 from the holding portion 23 than when the locking pieces 26 are provided corresponding to a pair of opposite edge portions (two edge portions). As a result, according to the present embodiment, it is possible to reduce the structure for ensuring the insulation of the connection member 40, and the wiring module 10 can be reduced in size.

  In particular, according to the present embodiment, the resin protector 20 is attached to the unit cell 11 with the opposing wall portion 25A side (the first wall portion 25A side where the connecting member 40 is not exposed) of the surrounding wall 25 being arranged outside. As a result, the effect of preventing contact between the connecting member 40 and the conductive member is enhanced.

  Further, in the present embodiment, a resin wire housing portion 32 that houses the wire W1 connected to the voltage detection terminal 45 is provided on the second wall portion 25B side where the locking piece 26 of the surrounding wall 25 is formed. It has been. Therefore, according to the present embodiment, the electric wire housing portion 32 is provided on the side of the second wall portion 25 </ b> B where the connecting member 40 is exposed in the surrounding wall 25, and the electric wire housing portion 32 ensures the insulation of the connecting member 40. Therefore, it is not necessary to separately provide a structure for securing the insulating property of the connecting member 40 in the surrounding wall 25.

  Furthermore, according to the present embodiment, the opposing edge portion 40C of the connection member 40 is provided with an overhang portion 42 that protrudes outward and is prevented from coming off by the retaining protrusion 28 of the surrounding wall 25. Therefore, the overhanging portion 42 of the connecting member 40 is pressed by the retaining protrusion 28 of the surrounding wall 25, and the connecting member 40 is reliably prevented from coming off.

<Embodiment 2>
A second embodiment of the present invention will be described with reference to FIGS.
The wiring module 50 according to the present embodiment is different from the first embodiment in that the height of the central portion of the first wall 51A (opposing wall) of the surrounding wall 51 is low as shown in FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.
As shown in FIGS. 8 and 9, the wiring module 50 according to the present embodiment has a shape in which a portion of the first wall portion 51 </ b> A of the surrounding wall 51 corresponding to the upper portion of the retaining protrusion 52 is recessed. Is lower than other parts. Other configurations are substantially the same as those of the first embodiment. A portion indicated by a two-dot chain line in FIG. 8 is a portion where the electrode terminals 13A and 13B are arranged. A portion indicated by a two-dot chain line in FIG. 9 is a bolt 15 fastened to the electrode terminals 13 </ b> A and 13 </ b> B of the unit cell 11.
According to the present embodiment, in addition to the same effects as those of the first embodiment, a part of the first wall portion 51A can be lowered, so that the amount of resin for forming the holding portion 52 can be reduced. There is.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the connection member 40 connects (series connection) the electrode terminals 13A and 13B having different polarities. However, the connection member 40 is not limited to this and connects (parallel connection) the same polarity electrode terminals. May be.
(2) The number of the single cells 11 constituting the battery module M is seven in FIG. 1, but the number is not limited to this.
(3) In the above embodiment, the resin protector 20 is configured by connecting a plurality of connecting units 21. However, an integrated resin protector may be used.
(4) In the above embodiment, the voltage detection terminal 45 is arranged in an oblique direction with respect to the battery arrangement direction, and the example in which the electric wire connected to the voltage detection terminal 45 is derived from the corner portion of the holding portion 23 has been shown. The voltage detection terminals may be arranged along the battery arrangement direction, and the electric wires may be led out from the second wall portion.
(5) In the above embodiment, the voltage detection terminal 45 is provided. However, the present invention is not limited to this, and a detection terminal for detecting a state other than the voltage, for example, the current of the single cell or the temperature of the single cell may be provided. .
(6) In the above-described embodiment, the connecting member 40 is provided with the protruding portion 42 provided on the opposing edge portion 40 </ b> C so as to protrude outward and to be prevented by the retaining protrusion 28 of the surrounding wall 25. Although shown, the connection member in which the overhang | projection part is not provided may be sufficient.
(7) In the above embodiment, the resin protector 20 is shown that is attached to the electricity storage element 11 with the opposing wall portion 25A side of the surrounding wall 25 arranged outside, but the opposing wall portion side is inward. It may be arranged.
(8) In the said embodiment, although the electric wire accommodating part 32 showed the example formed in the 2nd wall part 25B side in which the locking piece 26 of the surrounding wall 25 was formed, the electric wire accommodating part is the opposing wall part side. The resin protector currently formed in (1st wall part side) may be sufficient.

DESCRIPTION OF SYMBOLS 10,50 ... Wiring module 11 ... Single cell (electric storage element)
12 ... Single cell group (electric storage element group)
13A, 13B ... Electrode terminal 20 ... Resin protector 23 (23A), 52 ... Holding part 24 ... Bottom wall 25, 51 ... Enclosure wall 25A, 51A ... First wall part (opposing wall part)
25B ... 2nd wall part 26 ... Locking piece 26A ... Locking protrusion 26B ... Slit 28 ... Retaining protrusion 32 ... Electric wire accommodating part 33 ... Nail | claw part 40 ... Connection member 40B ... One edge part 40C ... Opposite edge part 41 ... Insertion hole 42 ... Overhang 45 ... Voltage detection terminal (detection terminal)
46 ... Flat plate part 46A ... Insertion hole 47 ... Connection part M ... Battery module W1 ... Electric wire (connected to voltage detection terminal) W2 ... Electric wire (connected to intermediate voltage detection terminal)

Claims (4)

A plurality of connection members that connect adjacent electrode terminals of a plurality of power storage elements having positive and negative electrode terminals, and a resin protector made of an insulating resin provided with a holding portion that holds the connection members,
The holding portion is provided with an enclosing wall that surrounds the periphery of the connecting member,
On the surrounding wall, a locking piece that is formed by cutting out a part of the surrounding wall and locks one edge of the connecting member;
Out of the surrounding walls, a protruding wall is formed to protrude inward in an opposing wall portion disposed along an opposing edge portion facing one edge portion of the connecting member, and presses the opposing edge portion of the connecting member to prevent the connecting member from coming off. A wiring module provided with a stop projection. 2. The wiring module according to claim 1, wherein the opposing edge portion of the connection member is provided with a protruding portion that is formed to protrude outward and to be prevented from being detached by the retaining protrusion of the surrounding wall. . 3. The wiring module according to claim 1, wherein the resin protector is attached to the power storage element in a state in which the facing wall portion side of the surrounding wall is arranged outside. A detection terminal connected to the electrode terminal for detecting the state of the power storage element; an electric wire connected to the detection terminal; and a resin-made electric wire accommodating portion for accommodating the electric wire,
The wiring module according to any one of claims 1 to 3, wherein the electric wire housing portion is provided on a side of the surrounding wall where the locking piece is formed.

Images