JP5779513B2 - Battery wiring module - Google Patents

Description

  The present invention relates to a battery wiring module.

  2. Description of the Related Art Battery modules for electric vehicles and hybrid vehicles are arranged by stacking a plurality of unit cells each having a flat main body having a power generation element inside and positive and negative electrodes. A plurality of single cells are connected in series or in parallel by connecting the electrodes of the adjacent single cells with a connecting member.

  Patent Document 1 listed below describes a battery wiring module including a connection member, a voltage detection line for measuring the voltage of a single cell, and a base portion that houses the connection member and the voltage detection line. By attaching this battery wiring module to the unit cell group, inserting the electrode terminals of each unit cell into the terminal insertion holes formed in each connection member, and screwing and tightening the nut, each unit cell The space is electrically connected.

JP 2011-008957 A

  By the way, the cover part which covers the upper part of the accommodated voltage detection line so that opening and closing is possible is attached to the one side wall of the base part disclosed by patent document 1, and can protect a voltage detection line. However, according to such a configuration, there is a possibility that the voltage detection line may be sandwiched between the lid portion and the voltage detection line arranged in the base portion when the lid portion is closed. For this reason, it is required to prevent the detection line from being caught with a simple configuration.

  The present invention has been completed based on the above circumstances, and provides a battery wiring module capable of preventing a detection line from being sandwiched between a lid and a simple configuration. Objective.

The present invention is a battery wiring module attached to a unit cell group in which a plurality of unit cells having positive and negative electrode terminals are arranged, and houses a plurality of bus bars connected to the electrode terminals and the bus bars. A plurality of bus bar accommodating portions, a plurality of detection electric wires for detecting the state of the unit cell group, and a pair of groove wall portions provided along the bus bar accommodating portion and between the pair of groove wall portions An electric wire receiving groove for receiving the plurality of detection electric wires, a lid portion covering the electric wire receiving groove, a rear surface side of the lid portion, and provided along the pair of groove wall portions; A pair of wire pushing ribs for restricting the lifting of the plurality of detection wires housed in the wire housing groove when closed, and both or one of the pair of groove wall portions includes the wire housing groove. Projecting inwardly, An electric wire pressing piece that restricts the plurality of detection electric wires from coming out of the electric wire receiving groove by abutting from the opening side of the electric wire receiving groove to a number of the detection electric wires is formed, and the electric wire pushing rib A cutout portion that avoids interference with the wire pressing piece is formed at a position corresponding to the wire pressing piece .

  According to the present invention, since a plurality of detection wires are collectively accommodated in the wire accommodation groove, the detection wires are inserted into the wire accommodation groove as compared with the case where one detection wire is accommodated in one wire accommodation groove. The efficiency of the operation | work which accommodates can be improved.

  In addition, the detection electric wire 60 may be bent and deformed upward along the inner wall surface of the groove wall due to the elastic return force of the detection electric wire in a curved state, and there is a concern that the detection electric wire may protrude from the electric wire housing groove.

  Therefore, in the present invention, a wire pushing rib is formed on the inner surface of the lid. When the lid is closed, the electric wire pushing rib comes into contact with the detection electric wire protruding upward from the electric wire receiving groove from above. Then, a detection electric wire is pressed below by this electric wire pushing rib. Thereby, a detection electric wire is pushed into the inside of an electric wire accommodation groove | channel.

Since the above-described pair of wire pushing ribs are formed along the pair of groove wall portions constituting the wire receiving groove, the detection wires bent and deformed along the groove wall portion can be surely provided inside the wire receiving groove. Can be pushed into.
Moreover, according to this invention, it is suppressed that an electric wire pushing rib interferes with an electric wire holding piece. As a result, in order to suppress interference between the electric wire pressing rib and the electric wire pressing piece, the height position of the electric wire pressing rib and the height position of the electric wire pressing piece need not be set at different positions. As a result, the battery module can be reduced in height.

As embodiments of the present invention, the following embodiments are preferable.
The bus bar side groove wall portion located on the bus bar housing portion side of the pair of groove wall portions has a wire insertion portion for passing at least one of the plurality of detection wires to the bus bar housing portion side. It is preferable that the bus bar side electric wire pushing rib along the bus bar side groove wall portion of the pair of electric wire pushing ribs is formed between both side edges of the electric wire insertion portion.

  According to said aspect, a detection electric wire is guide | induced to an electric wire accommodation groove | channel from a bus-bar accommodating part through an electric wire insertion part. In this aspect, the bus bar side electric wire pushing rib along the bus bar side groove wall portion of the pair of electric wire pushing ribs is formed between the left and right side edges of the electric wire insertion portion. For this reason, a detection electric wire can be reliably accommodated from an electric wire insertion part to an electric wire accommodation groove | channel by a detection electric wire being pressed below by an electric wire pushing rib.

  The lid portion is provided integrally with the bus bar housing portion via a hinge, and a lock portion is provided on the opposite side of the lid portion from the hinge to hold the lid in a closed state. It is preferable.

  According to said aspect, by this, compared with the case where a cover part is provided separately from a bus-bar accommodating part, a number of parts can be reduced.

  It is preferable that a plurality of connection units divided for each of the bus bar accommodating portions are connected to each other.

  According to said aspect, a comparatively big battery wiring module can be formed by shape | molding a comparatively small connection unit with a metal mold | die, and connecting this connection unit. Thereby, compared with the case where one big battery wiring module is shape | molded with one metal mold | die, it can suppress that a metal mold | die enlarges. As a result, the manufacturing cost of the battery wiring module can be reduced.

  It is preferable that a voltage detection terminal connected to the bus bar is connected to a tip of the detection electric wire.

  According to said aspect, the voltage of a cell can be stung.

  ADVANTAGE OF THE INVENTION According to this invention, the battery connection assembly which can prevent that a detection line is pinched | interposed between a cover part with simple structure can be provided.

The top view of the battery module with which the battery wiring module which concerns on one Embodiment of this invention was attached. The top view of the battery module which shows the state which the cover part of the battery wiring module opened The top view which expanded one accommodation unit part among battery wiring modules Side view AA sectional view of FIG.

<Embodiment>
An embodiment in which the present invention is applied to a battery module 10 will be described with reference to FIGS. 1 to 5. The battery module 10 is mounted on a vehicle (not shown) such as an electric vehicle or a hybrid vehicle, and used as a power source for driving the vehicle. The battery module 10 includes a unit cell group 13 in which a plurality of unit cells 12 having positive and negative electrode terminals 11 are arranged side by side. The plurality of electrode terminals 11 are electrically connected by the battery wiring module 20.

  In addition, in the following description, about the some same member, a code | symbol may be attached | subjected to one member and a code | symbol may be abbreviate | omitted about another member.

(Single cell 12)
A power generation element (not shown) is accommodated inside the unit cell 12. On the upper surface of the unit cell 12, a pair of electrode terminals 11, 11 are formed projecting upward at positions near both ends in the longitudinal direction (vertical direction in FIG. 2). One of the electrode terminals 11 is a positive terminal, and the other is a negative terminal. The electrode terminal 11 constituting the positive electrode terminal and the electrode terminal 11 constituting the negative electrode terminal have the same shape and the same size. The electrode terminal 11 includes an electrode post 14 protruding in a round bar shape upward from a metal terminal block (not shown), and a thread is formed on the outer surface of the electrode post 14. The unit cells 12 are arranged so that the adjacent electrode terminals 11 have different polarities. The plurality of unit cells 12 are arranged in the left-right direction in FIG. 2 to form a unit cell group 13.

(Battery wiring module 20)
The battery wiring module 20 includes a plurality of metal bus bars 21 having a pair of terminal through-holes 22 and 22 that are inserted through and connected to the electrode posts 14 of the positive and negative electrode terminals 11 of the unit cell 12, and the bus bar 21. A resin protector 30 having a bus bar housing portion 32 for holding the voltage, a voltage detection terminal 50 electrically connected to the bus bar 21 in an overlapping manner, a detection electric wire 60 connected to the voltage detection terminal 50, and a resin protector And a lid portion 40 covering the 30 open surfaces.

(Resin protector 30)
The resin protector 30 is formed by connecting a plurality of connection units 31 to be described later, and has an elongated shape in the direction in which the cells 12 are arranged (left and right in the figure), as shown in FIG.

(Bus bar 21)
The bus bar 21 is formed by pressing a metal plate made of copper, copper alloy, stainless steel (SUS), aluminum or the like into a predetermined shape, and has a substantially rectangular shape as a whole as shown in FIG. ing. The surface of the bus bar 21 may be plated with a metal such as tin or nickel. The bus bar 21 is formed with a pair of terminal through holes 22, 22 having a circular shape through which the electrode post 14 of the electrode terminal 11 is inserted so as to penetrate the bus bar 21. The terminal through hole 22 is set to be slightly larger than the diameter of the electrode post 14. A nut (not shown) is screwed in a state in which the electrode post 14 is passed through the terminal through hole 22, and the bus bar 21 is sandwiched between the nut and the terminal block. Are electrically connected.

(Connection unit 31)
A plurality of connection units 31 constitute a resin protector 30 by being connected to each other, and as shown in the plan view of FIG. 3, a bus bar accommodating portion 32 that opens upward and accommodates and holds the bus bar 21; An electric wire accommodation groove 33 for accommodating a detection electric wire 60 connected to the voltage detection terminal 50 provided to overlap the bus bar 21 is provided along the longitudinal direction of the resin protector 30.

  The bus bar accommodating portion 32 is formed in such a size that an insulating wall 72 that partitions adjacent bus bars 21 rises upward so that the bus bar 21 can be accommodated. The insulating wall 72 also functions as a protective wall for the adjacent electrode terminal 11. A part of the front wall 32A located on the lower side in FIG. 3 of the bus bar accommodating portion 32 is cut out and connected to a barrel holding portion 35 described later.

  The electric wire housing groove 33 has a pair of groove wall portions 33A and 33B and a bottom portion 33C, and is provided along the direction in which the bus bar housing portions 32 are arranged. The wire receiving groove 33 is formed to open upward. The pair of groove wall portions 33 </ b> A and 33 </ b> B includes an inner groove wall portion (bus bar side groove wall portion) 33 </ b> A located on the bus bar housing portion 32 side and an outer groove wall portion 33 </ b> B located on the opposite side to the bus bar housing portion 32. A plurality of detection wires 60 can be housed in the wire housing groove 33. The groove wall portion 33A is provided with an electric wire insertion portion 34 for introducing the detection electric wire 60 into the electric wire accommodation groove 33 from the bus bar accommodating portion 32 side (the upper side in FIG. 3). A groove-shaped barrel holding portion 35 that holds a wire connecting portion 52 of the voltage detection terminal 50 described later is provided between the housing portion 32 and the wire receiving groove 33 so as to extend in the vertical direction. The housing groove 33 and the bus bar housing portion 32 are connected.

  Of the pair of groove wall portions 33A and 33B of the wire receiving groove 33, in the vicinity of the wire insertion portion 34, a pair of wire pressing pieces 36A for holding the detection wire 60 in the wire receiving groove 33 from above (opening side), 36B protrudes from the vicinity of the upper edge of the groove wall portions 33A and 33B so as to face each other with a gap between the tip portions. Of the pair of electric wire holding pieces 36A and 36B, one electric wire holding piece 36B projecting from the outer groove wall portion 33B toward the inner side of the bus bar housing portion 32 side (direction toward the inner groove wall portion 33A). Is set longer than the other pressing piece 36A (the electric wire pressing piece 36A projecting from the bus bar housing portion 32 side toward the outer groove wall portion 33B). Thereby, the gap between the pair of wire pressing pieces 36 </ b> A and 36 </ b> B is closer to the bus bar housing portion 32 side than the center line in the width direction of the wire housing groove 33.

  Further, on the opposite side (right side in FIG. 3) of the wire pressing piece 36B across the wire insertion portion 34 in the outer groove wall portion 33B, the wire pressing piece 39 protrudes toward the opposed inner groove wall portion 33A. Has been. The wire pressing piece 39 has a length equivalent to that of the above-described wire pressing piece 36B.

  The edge of the insulating wall 72 opposite to the wire receiving groove 33 in the bus bar housing portion 32 covers the entire open surface of each connection unit 31 to protect the bus bar 21 and the electrode terminal 11 and to detect the detection wire. A plate-like lid 40 that prevents the protrusion 60 from protruding is provided via a hinge 41 so as to be capable of opening and closing. A lock portion 42 is provided in the vicinity of the upper edge portion of the lid portion 40 in FIG. 3 so as to be cut and raised (see FIG. 5), and the lock portion 42 is located on the side of the wire receiving groove 33 of the connection unit 31. By being locked by a lock receiving portion 38 provided on the outer surface (the lower surface in FIG. 3), the bus bar housing portion 32 and the wire housing groove 33 can be closed from the open surface (upper surface) side.

  Further, a pair of fitting pieces 43 having a claw portion 43A at the tip end toward the lid portion 40 of the adjacent connection unit 31 (leftward in FIG. 3) at the upper left corner of the lid portion 40 in FIG. 3) and a fitting recess 44 capable of receiving the fitting piece 43 of the lid 40 of the adjacent connection unit 31 is cut and raised from the lid surface at the upper right corner in FIG. 3. Is provided. The fitting piece 43 is fitted into the fitting recess 44 of the adjacent connection unit 31, and the claw portion 43 </ b> A is locked to the end of the fitting recess 44, whereby the lid portion 40 of the adjacent connection unit 31. They are connected to each other (see FIG. 2).

  A pair of wire pushing ribs 70 projecting downward are formed on the lower surface of the lid portion 40 so as to extend in the left-right direction. Each of the pair of electric wire pushing ribs 70 is formed along the inner surface of the inner groove wall portion 33A and the inner surface of the outer groove wall portion 33B in a state where the lid portion 40 is closed.

  The electric wire pushing rib 70 is formed with a notch 71 for avoiding interference with the electric wire pressing piece at a position corresponding to the electric wire pressing piece. The width dimension of the notch 71 is set larger than the width dimension of the wire pressing piece.

  Of the electric wire pushing ribs 70, the bus bar 21 side electric wire pushing ribs 70 along the bus bar side groove wall portions are formed between the left and right edges of the electric wire insertion portion 34 formed in the bus bar side groove wall portion.

  Further, in the connection unit 31, from the left side wall in FIG. 3 between the bus bar housing portion 32 and the wire housing groove 33, two plate-like fitting pieces 45 and 46 are directed to the adjacent connection unit 31. (Left direction in FIG. 3) They are arranged side by side so as to extend. As shown in FIG. 4, one of the two fitting pieces 45, 46 is provided so that the plate surface thereof faces in the direction along the open surface of the connection unit 31, and the other The fitting piece 46 is provided such that its plate surface faces in a direction orthogonal to the open surface of the connection unit 31. Further, two hole-like fitting recesses 47 and 48 capable of receiving the fitting pieces 45 and 46 of the adjacent connection units 31 are provided on the right side wall in FIG. 3 of the connection unit 31. The fitting recesses 47 and 48 are formed to have a depth and a size that allow the fitting pieces 45 and 46 to be inserted and fitted until the tips abut against each other. By fitting the fitting pieces 45 and 46 into the fitting recesses 47 and 48 of the adjacent connection units 31, the adjacent connection units 31 are connected to each other (see FIG. 2).

(Voltage detection terminal 50)
In the bus bar accommodating portion 32 of the connection unit 31, a voltage detection terminal 50 is disposed so as to overlap the bus bar 21 and detect the voltage of the unit cell 12. The voltage detection terminal 50 is formed by pressing a metal plate material such as copper, copper alloy, stainless steel, or aluminum into a predetermined shape. The surface of the voltage detection terminal 50 may be plated with a metal such as tin or nickel.

  In the present embodiment, the voltage detection terminal 50 has a rectangular shape, and a terminal insertion hole 51 through which the electrode post 14 of the positive or negative electrode terminal 11 is inserted is formed in the vicinity of the center thereof. Further, at the lower left end in FIG. 3, an electric wire connecting portion 52 that is caulked and crimped to the exposed core wire of the electric wire 60 is extended.

  The voltage detection terminal 50 is electrically connected to the detection electric wire 60 by being caulked so that the electric wire connection portion 52 is wound around the core wire of the detection electric wire 60. The voltage detection terminal 50 is electrically connected to the electrode terminal 11 by being sandwiched between a nut (not shown) and the bus bar 21. The opposite end of the detection wire 60 is connected to an ECU (not shown) or the like, and the voltage of the unit cell 12 is detected by the ECU or the like.

(Assembly process of battery module 10)
Then, an example of the assembly process of the battery module 10 is demonstrated. The assembly process of the battery module 10 is not limited to the following description. When assembling the battery module 10 of the present embodiment described above, a plurality of connection units 31 are first coupled to each other. Specifically, the fitting pieces 45 and 46 of each connection unit 31 are inserted into the fitting recesses 47 and 48 of the adjacent connection units 31 and pushed to a predetermined position. Further, the fitting piece 43 of the lid 40 is pushed into the fitting recess 44 of the lid 40 of the adjacent connection unit 31 to be fitted. As a result, the resin protector 30 is completed, the electric wire receiving groove 33 is connected, and the lid portion 40 can be collectively opened and closed with respect to the open surface of the resin protector 30 via the hinge 41.

  Next, the bus bar 21 is accommodated in the bus bar accommodating portion 32 of the resin protector 30. Then, the voltage detection terminal 50 in a state where the detection electric wire 60 is caulked to the electric wire connection portion 52 is accommodated in a predetermined position in the bus bar accommodating portion 32 of the resin protector 30 and overlapped with the bus bar 21. And the detection electric wire 60 led out from the electric wire connection part 52 is arrange | positioned in the electric wire accommodation groove | channel 33 through the electric wire insertion part 34. FIG.

  The battery wiring module 20 of the present embodiment assembled in this way is attached to the upper surface side of the unit cell group 13 arranged with the electrode terminals 11 facing upward. That is, while the electrode terminal 11 is inserted into the terminal through hole 22 of the bus bar 21 and the terminal insertion hole 51 of the voltage detection terminal 50, the battery wiring module 20 is placed on the upper side of the unit cell group 13 and connected to the electrode terminal 11. These nuts (not shown) are tightened to electrically connect the adjacent positive and negative electrode terminals 11, and the electrode terminals 11 and the voltage detection terminals 50.

  When all the connections are completed, finally, the lid portion 40 is rotated around the hinge 41 to close the open surface of the resin protector 30, and the lock portion 42 and the lock receiving portion 38 are engaged. Thereby, the battery module 10 is completed.

(Operation and effect of the embodiment)
Then, an effect | action and effect of this embodiment are demonstrated. In the present embodiment, since the plurality of detection wires 60 are collectively accommodated in the wire accommodation groove 33, detection is performed compared to the case where one detection wire 60 is accommodated in one wire accommodation groove 33. The work efficiency for accommodating the electric wire 60 in the electric wire accommodation groove 33 can be improved.

  Moreover, the detection electric wire 60 led out from the barrel holding part 35 of the resin protector 30 is introduced from the electric wire insertion part 34 into the electric wire accommodation groove 33 and accommodated. In this case, the direction in which the detection electric wire 60 extends is perpendicular to the electric wire receiving groove 33 in the electric wire insertion portion 34, for example, as shown in FIG. For this reason, after the detection electric wire 60 extends so as to abut against the outer groove wall portion 33B facing the electric wire insertion portion 34, the detection electric wire 60 is elastically deformed and curved in the lateral direction (left direction in FIG. 3), and the groove wall portion 33B. It is arranged along.

  In this case, there is a concern that the detection electric wire 60 in a curved state bends and deforms upward along the inner wall surface of the outer groove wall portion 33B due to the elastic return force, and the detection electric wire 60 protrudes from the electric wire housing groove 33 to the outside. .

  Therefore, in the present embodiment, an electric wire pushing rib 70 is formed on the inner surface of the lid portion 40. When the lid portion is rotated around the hinge 41, the wire pushing rib 70 comes into contact with the detection wire 60 protruding upward from the wire housing groove 33 from above. Then, the detection electric wire 60 is pressed downward by the electric wire pushing rib 70. As a result, the detection electric wire 60 is pushed into the electric wire receiving groove 33.

  Moreover, since the several detection electric wire 60 is accommodated in the inside of the electric wire accommodation groove | channel 33, by pushing the other detection electric wire 60 in the some detection electric wire 60, 33 A of inner side groove wall parts are formed. There is a possibility that it is pressed by the wall surface and protrudes upward along the wall surface of the inner groove wall portion 33A.

  In the present embodiment, one of the pair of electric wire pushing ribs 70 is formed along the inner groove wall portion 33A, so that the detection electric wire 60 is connected by closing the lid portion 40 in the same manner as described above. It can be pushed into the wire receiving groove 33 from above.

  Further, according to the present embodiment, the bus bar side groove wall portion is provided with the wire insertion portion 34 for passing at least one of the plurality of detection wires 60 to the bus bar housing portion 32 side by cutting out the bus bar side groove wall portion. ing. The detection wire 60 is guided from the bus bar housing portion 32 to the wire housing groove 33 through the wire insertion portion 34. In the present embodiment, the bus bar 21 side electric wire pushing rib 70 along the bus bar side groove wall portion of the pair of electric wire pushing ribs 70 is formed across the left and right side edges of the electric wire insertion portion 34. For this reason, the detection electric wire 60 can be reliably accommodated from the electric wire insertion part 34 to the electric wire accommodation groove 33 by the detection electric wire 60 being pressed downward by the electric wire pushing rib 70.

  Further, in the present embodiment, the inner groove wall portion 33 </ b> A and the outer groove wall portion 33 </ b> B protrude inward of the electric wire receiving groove 33, and the opening side (upper side of the electric wire receiving groove 33 with respect to the plurality of detection electric wires 60 ), The electric wire pressing pieces 36A, 36B, 39 for restricting the plurality of detection electric wires 60 from coming off the electric wire receiving groove 33 are formed. By abutting from above by the wire holding pieces 36 </ b> A, 36 </ b> B, 39, it is possible to suppress the plurality of detection wires 60 housed in the wire housing groove 33 from protruding from the wire housing groove 33.

  In addition, according to the present embodiment, the lid portion 40 is integrally provided on the insulating wall 72 of the bus bar housing portion 32 via the hinge 41, and the lid portion 40 is closed on the side opposite to the hinge 41 of the lid portion 40. A lock portion 42 for holding the lid state is provided. Thereby, compared with the case where the cover part 40 is provided separately from the bus-bar accommodating part 32, a number of parts can be reduced.

  Furthermore, according to this embodiment, the notch part 71 which avoids interference with the wire holding pieces 36A, 36B, 39 is formed in the wire pushing rib 70 at a position corresponding to the wire holding pieces 36A, 36B, 39. . Thereby, it is suppressed that the wire pushing rib 70 interferes with the wire pressing pieces 36A, 36B, 39. As a result, in order to suppress interference between the wire pushing rib 70 and the wire holding pieces 36A, 36B, 39, the height position of the wire pushing rib 70 is different from the height position of the wire holding pieces 36A, 36B, 39. It is not necessary to set to. As a result, the battery module 10 can be reduced in height.

  Further, according to the present embodiment, the battery wiring module 10 is formed by connecting the plurality of connection units 31. Accordingly, a relatively large battery wiring module 10 can be formed by forming a relatively small connection unit 31 with a mold (not shown) and connecting the connection units 31. Thereby, compared with the case where one big battery wiring module 10 is shape | molded by one metal mold | die, it can suppress that a metal mold | die enlarges. As a result, the manufacturing cost of the battery wiring module 10 can be reduced.

<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) As a reference example, when making the height position of the wire pushing rib 70 different from the height position of the wire holding pieces 36A, 36B, 39, the notch portion 71 of the wire pushing rib 70 is omitted. Also good.

(2) The lid portion 40 may be provided separately from the hinge 41 without being integrated.

(3) The resin protector 30 may be configured such that a plurality of bus bars 21 are held on one resin plate made of synthetic resin.

(4) The voltage detection terminal 50 is not necessarily required. For example, the detection electric wire 60 may be directly welded to the bus bar 21 or may be held by a holding portion provided in the bus bar 21. In short, the detection electric wire 60 and the bus bar 21 may be used. Any configuration may be used as long as it can conduct. Moreover, the detection electric wire 60 does not necessarily need to be an electric wire for detecting a voltage, For example, the electric wire for temperature detection connected to a temperature sensor may be sufficient.

(5) Any number of wire pressing pieces 36A, 36B, 39 may be provided in each connection unit 31. Further, the position is not limited to the above embodiment.

(6) In the above-described embodiment, two types of wire pressing pieces, ie, a pair (36A, 36B) and one (39), are provided, but one of them may be provided.

(7) In the present embodiment, the plurality of unit cells 12 are connected in series. However, the present invention is not limited to this, and the plurality of unit cell groups 13 may be connected in parallel.

DESCRIPTION OF SYMBOLS 10 ... Battery module 11 ... Electrode terminal 12 ... Single cell 13 ... Single cell group 14 ... Electrode terminal 20 ... Battery wiring module 21 ... Bus bar 30 ... Resin protector 31 ... Connection unit 32 ... Bus bar accommodating part 33 ... Electric wire accommodating groove 33A ... Outside Side groove wall (Bus bar side groove wall)
33B ... Inner groove wall 34 ... Electric wire insertion part 36A, 36B, 39 ... Electric wire holding piece 40 ... Cover part 41 ... Hinge 42 ... Locking part 50 ... Voltage detection terminal 52 ... Electric wire connection part 60 ... Detection electric wire 70 ... Electric wire pushing rib 71 ... Notch

Claims (5)

A battery wiring module attached to a unit cell group in which a plurality of unit cells having positive and negative electrode terminals are arranged,
A plurality of bus bars connected to the electrode terminals;
A plurality of bus bar accommodating portions for accommodating the bus bars;
A plurality of sensing wires for detecting the state of the unit cell group;
A wire housing groove that has a pair of groove walls and is provided along the bus bar housing portion and houses the plurality of detection wires between the pair of groove walls;
A lid that covers the wire receiving groove;
A pair that protrudes from the back surface side of the lid portion and is provided along the pair of groove wall portions, and regulates lifting of the plurality of detection wires accommodated in the wire accommodation groove when the lid portion is closed. An electric wire pushing rib ,
Both or one of the pair of groove wall portions protrudes inward of the wire receiving groove, and the plurality of detection wires are brought into contact with the plurality of detection wires from the opening side of the wire receiving groove. An electric wire pressing piece that restricts coming off from the electric wire receiving groove is formed,
The battery wiring module in which the notch part which avoids interference with the said electric wire holding piece is formed in the position corresponding to the said electric wire holding piece in the said electric wire pushing rib .   The bus bar side groove wall portion located on the bus bar housing portion side of the pair of groove wall portions has a wire insertion portion for passing at least one of the plurality of detection wires to the bus bar housing portion side. The bus bar side electric wire pushing rib which is provided by notching a portion and extends along the bus bar side groove wall portion of the pair of electric wire pushing ribs is formed between both side edges of the electric wire insertion portion. Battery wiring module.   The lid portion is provided integrally with the bus bar housing portion via a hinge, and a lock portion is provided on the opposite side of the lid portion from the hinge to hold the lid in a closed state. The battery wiring module according to claim 1 or 2. 4. The battery wiring module according to claim 1, wherein the battery wiring module is configured by connecting a plurality of connection units divided for each bus bar housing portion . 5. The battery wiring module according to any one of claims 1 to 4, wherein a voltage detection terminal connected to the bus bar is connected to a tip of the detection electric wire .

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