JP5673495B2 - Wiring module - Google Patents

Description

  The present invention relates to a wiring module.

  In battery modules for electric vehicles and hybrid vehicles, a plurality of single cells having positive and negative electrode terminals are arranged side by side, and electrode terminals of adjacent single cells are connected by a bus bar (connection member). Thus, a plurality of single cells are connected in series or in parallel.

  Here, as in Patent Document 1 below, it is considered that a plurality of connecting members are integrally mounted by accommodating connecting members in a plurality of unit units made of synthetic resin, and connecting adjacent unit units. It was.

  In the battery connection assembly of Patent Document 1, an engagement portion in which a columnar extending portion protrudes in the arrangement direction is provided at one end portion in the arrangement direction of the unit units, and the other end portion in the arrangement direction. An engaged portion that engages with an engaging portion of a unit unit adjacent to the unit unit is provided. The engaging portion is provided with a protruding portion at the tip of the extending portion, and the engaged portion is provided with an insertion concave portion into which the extending portion is fitted.

  A plurality of such unit units (connecting members) are connected to each other by the engaging portion and the engaged portion to form a battery connection assembly. Moreover, a plurality of unit cells are connected in series or in parallel by attaching a plurality of cell connection assemblies to the unit cell group arranged side by side.

  Here, in the battery connection assembly (wiring module), relative displacement in the alignment direction is allowed between the adjacent unit units (connecting members) by the cylindrical portion of the engaging portion and the insertion recess, and a plurality of adjacent battery units are connected. Even when there is a dimensional tolerance between the electrode terminals of the single cell, the dimensional tolerance between the electrode terminals can be accommodated by the relative movement between the unit units (connecting members).

JP 2011-175828 A

  By the way, when mounting a wiring module to a unit cell, due to dimensional tolerances between a plurality of unit cells, in general, all connecting members are not integrally assembled into a unit cell group. It is more efficient to assemble in order from the connecting member on the other end to the connecting member on the other end.

  Here, if the connecting members are connected in a straight line in the arrangement direction at the time of this assembly, it is difficult to correspond to the dimensional tolerance between the single cells, which is desirable from the viewpoint of the workability of the assembly to the single cell group. Absent. On the other hand, if the connecting members arranged side by side can be bent in the direction opposite to the assembly direction to the unit cell group, the connecting member on one end side in the arranging direction can be connected on the other end side in the arranging direction. It becomes possible to assemble to a member in order, and the assembling workability of the wiring module can be improved.

  However, in the configuration of Patent Document 1, since the adjacent connecting members are connected by fitting the outer periphery of the extended portion into the insertion recess (with almost no gap), a wiring module (a plurality of connecting members arranged side by side) ) Is not easy to bend in the direction opposite to the assembly direction to the unit cell group, and there is a problem that the workability of assembling the wiring module is likely to deteriorate.

  This invention is completed based on the above situations, Comprising: It aims at providing the wiring module which can improve the assembly workability | operativity to a cell group.

The wiring module according to the present invention is a wiring module that is assembled to a unit cell group including a plurality of unit cells having positive and negative electrode terminals, and a plurality of electric wires that are electrically connected to the plurality of unit cells. The resin protector includes a plurality of connecting members, and each of the connecting members is provided on one end side in the arranging direction of the connecting members. A connecting protrusion that protrudes in the direction, and a connecting insertion portion that is provided on the other end side in the alignment direction of the connecting member and through which the connecting protrusion of the adjacent connecting member is inserted. in a state where the inserted into the coupling insertion portion has a cutout portion for forming a predetermined clearance between said coupling insertion portion in the mounting direction of the cell group, wherein the notch, the The lower end side is cut out so that the vertical dimension of the connecting protrusion piece becomes shorter toward the tip end side, the upper end side of the connecting protrusion piece is not provided with the notch portion, and the connecting insertion part is An upper wall disposed on the upper side of the connection projecting piece; and an engagement wall disposed on the lower side of the connection projecting piece, wherein the predetermined clearance is between the connection projecting piece and the engagement wall. The resin protector is allowed to bend and deform in the direction opposite to the assembly direction to the unit cell group by the predetermined clearance , and the connecting projecting piece is in the assembly direction to the unit cell group. The dimension is larger than the dimension in the direction perpendicular to the assembly direction.

According to this configuration, the predetermined clearance allows the resin protector to bend and deform in the direction opposite to the direction in which the resin protector is assembled to the unit cell group. Assembling in order to the other side becomes easy. Therefore, it is possible to improve the workability of assembling the wiring module to the single cell group.
In addition, as for the assembly direction of the resin protector to the unit cell group, if the predetermined clearance is not formed by not providing the notch portion, the deformation deformation in the assembly direction of the resin protector to the unit cell group is restricted. Can do. Therefore, for example, since bending deformation in the assembling direction when the resin protector is lifted before assembling to the unit cell group can be restricted, it is possible to suppress a decrease in workability when the wiring module is moved to the assembling position.
Moreover, the rigidity of the connection protrusion with respect to the force in the direction opposite to the assembly direction or the assembly direction can be increased.
The wiring module according to the present invention is a wiring module that is assembled to a unit cell group including a plurality of unit cells having positive and negative electrode terminals, and a plurality of electric wires that are electrically connected to the plurality of unit cells. The resin protector includes a plurality of connecting members, and each of the connecting members is provided on one end side in the arranging direction of the connecting members. A connecting protrusion that protrudes in the direction, and a connecting insertion portion that is provided on the other end side in the alignment direction of the connecting member and through which the connecting protrusion of the adjacent connecting member is inserted. Has a notch part that forms a predetermined clearance with the connection insertion part in the assembly direction to the unit cell group in a state of being inserted into the connection insertion part, The lower end side is cut out so that the vertical dimension of the connecting protrusion piece becomes shorter toward the tip end side, the upper end side of the connecting protrusion piece is not provided with the notch portion, and the connecting insertion part is An upper wall disposed on the upper side of the connection projecting piece; and an engagement wall disposed on the lower side of the connection projecting piece, wherein the predetermined clearance is between the connection projecting piece and the engagement wall. The resin protector is allowed to be bent and deformed in the direction opposite to the direction in which the battery protector is assembled to the unit cell group by the predetermined clearance, and the connecting members protrude along the connecting protrusions. And a guide receiving portion through which the guide protrusion of the adjacent connecting member is inserted, and when the adjacent connecting member is connected, the distal end of the connecting protrusion is Prior to being inserted into the connecting insertion part, Tip of de projecting piece is inserted into the guide receiving portion.
According to this configuration, the predetermined clearance allows the resin protector to bend and deform in the direction opposite to the direction in which the resin protector is assembled to the unit cell group. Assembling in order to the other side becomes easy. Therefore, it is possible to improve the workability of assembling the wiring module to the single cell group.
In addition, as for the assembly direction of the resin protector to the unit cell group, if the predetermined clearance is not formed by not providing the notch portion, the deformation deformation in the assembly direction of the resin protector to the unit cell group is restricted. Can do. Therefore, for example, since bending deformation in the assembling direction when the resin protector is lifted before assembling to the unit cell group can be restricted, it is possible to suppress a decrease in workability when the wiring module is moved to the assembling position.
Further, when the adjacent connecting members are connected, the guide protruding piece is inserted into the guide receiving portion before the leading end portion of the connecting protruding piece is inserted into the connecting insertion portion. It becomes possible to connect the connecting members with reference to. Therefore, it is possible to improve workability when connecting the connecting members.
The wiring module according to the present invention is a wiring module that is assembled to a unit cell group including a plurality of unit cells having positive and negative electrode terminals, and a plurality of electric wires that are electrically connected to the plurality of unit cells. The resin protector includes a plurality of connecting members, and each of the connecting members is provided on one end side in the arranging direction of the connecting members. A connecting protrusion that protrudes in the direction, and a connecting insertion portion that is provided on the other end side in the alignment direction of the connecting member and through which the connecting protrusion of the adjacent connecting member is inserted. Has a notch part that forms a predetermined clearance with the connection insertion part in the assembly direction to the unit cell group in a state of being inserted into the connection insertion part, The lower end side is cut out so that the vertical dimension of the connecting protrusion piece becomes shorter toward the tip end side, the upper end side of the connecting protrusion piece is not provided with the notch portion, and the connecting insertion part is An upper wall disposed on the upper side of the connection projecting piece; and an engagement wall disposed on the lower side of the connection projecting piece, wherein the predetermined clearance is between the connection projecting piece and the engagement wall. The resin protector is allowed to be bent and deformed in the direction opposite to the assembly direction to the unit cell group by the predetermined clearance, and each connecting member is a connecting member that connects the electrode terminals. A holding portion that covers the holding portion, and a cover engaging portion that protrudes in the direction in which the connecting members are arranged, and the adjacent connecting member. Cover cover engaged with cover engaging part And a coupling portion, the projecting direction of the cover engaging portion is inclined on the side opposite to the mounting direction of the to cell group in a state of opening the cover portion.
According to this configuration, the predetermined clearance allows the resin protector to bend and deform in the direction opposite to the direction in which the resin protector is assembled to the unit cell group. Assembling in order to the other side becomes easy. Therefore, it is possible to improve the workability of assembling the wiring module to the single cell group.
In addition, as for the assembly direction of the resin protector to the unit cell group, if the predetermined clearance is not formed by not providing the notch portion, the deformation deformation in the assembly direction of the resin protector to the unit cell group is restricted. Can do. Therefore, for example, since bending deformation in the assembling direction when the resin protector is lifted before assembling to the unit cell group can be restricted, it is possible to suppress a decrease in workability when the wiring module is moved to the assembling position.
Moreover, when the resin protector is bent, it is possible to suppress the occurrence of a problem that the engagement between the cover engaging portion and the cover engaged portion is released.

It is preferable to have the following configuration as an embodiment of the above configuration .

Said connecting protrusion, said deformable flexure in the direction perpendicular to the direction of assembly of the cell group, the tip of the connecting protrusion is locked to the engaged portion of the connecting insert portion The locking part protrudes in a direction orthogonal to the assembly direction .

-A pair of said connection protrusion is provided, and each said latching | locking part provided in a pair of said connection protrusion protrudes in the direction which mutually turns.
If it does in this way, the connection state of a connection member can be held with simple composition.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to improve the assembly workability | operativity to a single battery group about a wiring module.

Plan view showing the battery module Front view showing the wiring module Top view showing the wiring module with the cover open AA sectional view of FIG. The figure which expanded and showed the state where the latching | locking part of a connection protrusion piece latches to a to-be-latched part. BB sectional view of FIG. CC sectional view of FIG. Front view showing connecting member Right side view showing the connecting member in a state where the cover portion is opened The figure explaining the insertion to the connection insertion part of a connection protrusion The figure which shows the state which bent the wiring module to the opposite side to the assembly direction to a cell group. The figure which shows the relationship between the connection protrusion in the state of FIG. 11, and a connection insertion part.

<Embodiment>
An embodiment of the wiring module 20 of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the wiring module 20 of the present embodiment is attached to a unit cell group 13 in which a plurality of unit cells 11 are arranged to constitute a battery module 10. For example, it is used as a drive source for an electric vehicle or a hybrid vehicle. In the following, the vertical direction will be described with reference to FIG. 2, with the lower part of FIG. 3 as the front and the upper part as the rear.

(Battery module)
As shown in FIG. 1, the battery module 10 includes a unit cell group 13 composed of a plurality of unit cells 11 arranged side by side and a plurality of wiring modules 20 assembled on the upper surface of the unit cell group 13. Has been.
The unit cell 11 has a pair of electrode terminals 12A and 12B that protrude vertically from the upper surface of a rectangular parallelepiped main body in which a power generation element (not shown) is accommodated.

Electrode terminals 12A and 12B (illustrated as positive electrode 12A and negative electrode 12B) are provided at the front and rear portions of the main body, and have a cylindrical shape (bolt shape) having screw grooves on the outer periphery.
The direction of the polarity (positive / negative) of each unit cell 11 is arranged so that the unit cells 11 adjacent to each other are opposite to each other, so that the electrode terminals 12A and 12B having different polarities are adjacent to each other. ing. The plurality of single cells 11 are fixed by a holding plate (not shown).
In the unit cell group 13 configured in this manner, the electrode terminals 12A and 12B are arranged in two rows, and the plurality of unit cells 11 are connected in series by assembling the wiring module 20 to each row.

(Wiring module)
As shown in FIG. 3, the wiring module 20 (hereinafter, the lower (front) wiring module 20 in FIG. 1) includes a plurality of connecting members 21 that connect the electrode terminals 12 </ b> A and 12 </ b> B adjacent to each other on the left and right. A plurality of voltage detection terminals 23 that are overlapped with each connection member 21 and connected to the terminal portion of the electric wire to detect the voltage of the unit cell 11 are connected to a plurality of connection members 26 that accommodate the connection member 21 and the voltage detection terminal 23. And a resin protector 25 made of synthetic resin. As a result, the wiring module 20 is configured such that a connecting unit 20 </ b> A in which the connecting member 21 and the voltage detection terminal 23 are arranged on each connecting member 26 is connected to the left and right.

The connection member 21 is made of a metal such as copper, copper alloy, or aluminum, has a generally rectangular plate shape, and has a pair of through holes 22 through which the electrode terminals 12A and 12B are passed. Each through hole 22 has an oval shape that is long in the left-right direction, which is the arrangement direction of the cells 11.
The voltage detection terminal 23 is provided to detect the voltage of the unit cell 11, and an electric wire (not shown) is connected to a rectangular metal plate member by a known connection means such as crimping.

A through hole 24 through which a bolt is inserted is formed through the center of the voltage detection terminal 23. The through hole 24 has an oval shape that is long in the left-right direction, and is superimposed on one through hole 22 of the connection member 21.
The electric wire is a covered electric wire, and a conductor from which the insulating coating (insulating layer) has been peeled and exposed at the terminal portion is connected to the voltage detection terminal 23.

(Resin protector)
The resin protector 25 is made of synthetic resin, and is configured by connecting five (plural) connecting members 26 to the left and right.
The five connecting members 26 have the same shape, and have a holding portion 27 that holds each connection member 21 and each voltage detection terminal 23, and an inverted T shape that accommodates an electric wire connected to the voltage detection terminal 23. , The reinforcing portion 35 interposed between the holding portion 27 and the electric wire receiving portion 30 to increase the strength, and the cover portion 55 covering the holding portion 27 and the reinforcing portion 35.

The holding portion 27 has a bottom plate (not shown) on which the connection member 21 is placed and a pair of left and right openings that can be inserted through the base portions of the electrode terminals 12A and 12B, and a partition wall 28 that partitions the connection member 21 from the outside. With.
The partition wall 28 is provided at a height at which contact of the tool or the like is prevented in order to prevent the tool or the like from contacting the electrode terminals 12A and 12B, the connection member 21 and the voltage detection terminal 23 and short-circuiting. Yes, it stands up around the connection member 21 so as to open the front and left sides and surround the rear and right sides. The opened left side is arranged so that the right partition wall 28 of the adjacent connecting member 26 is adjacent to the opened part, so that the adjacent connecting members 21 are partitioned by the partition wall 28. It is like that.

A regulating piece 29 is provided on the inner surface of the partition wall 28. By disposing the connection member 21 below the restriction piece 29, the detachment of the connection member 21 is restricted.
The electric wire accommodating portion 30 includes an electric wire introducing portion 31 connected to the holding portion 27 and an electric wire routing portion 32 where an electric wire introduced into the electric wire introducing portion 31 is routed, and an inverted T-shaped electric wire accommodating groove. (Not shown) is covered with an inverted T-shaped groove lid 34 connected via a hinge 33.

As shown in FIG. 9, the reinforcing portion 35 is provided on the left and right sides of the electric wire introducing portion 31 with a predetermined thickness.
A pair of connecting projecting pieces 46 and 47 and a guide projecting piece 48 projecting rightward (in the arranging direction of the connecting members) are provided at the right end portion (one end side in the connecting member arranging direction) of the reinforcing portion 35.
On the other hand, at the left end portion of the reinforcing portion 35 (the other end side in the direction in which the connecting members 26 are arranged), as shown in FIG. A connection insertion part 36 and a guide receiving part 41 to be inserted are provided.

As shown in FIG. 10, the connecting insertion part 36 is formed in a size that allows the connecting protruding pieces 46 and 47 to be inserted, and includes an upper wall 37 disposed on the upper side of the connecting protruding pieces 46 and 47, A back wall 38 extending downward from the back end of the wall 37 and an engagement wall 39 disposed below the connecting protrusions 46 and 47 are provided.
The engagement wall 39 is formed so that the position is shifted to the left with respect to the upper wall 37 and the position is shifted downward with respect to the back wall 38 in order to allow the mold to be removed.

When the resin protector 25 is bent and deformed, the upper end of the engagement wall 39 engages with a notch 49 (described later) at the lower ends of the connecting protrusions 46 and 47 to restrict excessive deformation of the resin protector 25. .
Moreover, the connection insertion part 36 has a pair of to-be-latched part 40A, 40B which protrudes in the direction which mutually faces, as shown in FIG.
The locked portions 40A and 40B are provided so as to be continuous with the upper wall 37 and the back wall 43, and protrude in a hook shape toward the connecting protrusions 46 and 47 side.

As shown in FIG. 6, the guide receiving portion 41 is formed in such a size that the guide protruding piece 48 can be inserted, and an upper wall 42 disposed above the guide protruding piece 48 and a rear end of the upper wall 42. And an engagement wall 44 disposed below the guide protrusion 48.
The engagement wall 44 is formed with a position shifted to the left with respect to the upper wall 42 and a position shifted downward with respect to the back wall 43 in order to enable removal of the mold.
When the resin protector 25 is bent and deformed, the engaging wall 44 abuts against a notch 49 at the lower end of the guide protrusion 48 to restrict excessive deformation of the resin protector 25.

  The pair of connecting projecting pieces 46 and 47 and the guide projecting piece 48 are both thick in the vertical direction (the assembly direction of the wiring module 20) and thin in the front-rear direction (the direction perpendicular to the assembly direction). . Since the connecting protrusions 46 and 47 are thin in the front-rear direction, they can be bent and deformed in the front-rear direction. The pair of connecting protrusions 46 and 47 have a slight gap between their base ends, and are inclined in a direction of separating (expanding) from each other toward the distal end side.

On the lower side of the connecting projecting pieces 46 and 47 and the guide projecting piece 48, a notch 49 is formed by notching the lower end in an inclined manner.
The notch 49 is formed by notching the lower end side so that the vertical dimensions of the connecting protrusions 46 and 47 and the guide protrusion 48 are shortened toward the distal end side. More specifically, the cutout portion 49 is inserted through the connection insertion portion 36 to the normal connection position (in the left-right direction) where the connection protrusions 46 and 47 and the guide protrusion 48 are positions where the connection member 26 is normally connected. In this case, the connection protrusions 46 and 47 are notched in such a size that a predetermined clearance CL is formed between the notches 49 and 47 and the upper ends of the engagement walls 39 and 44.

The predetermined clearance CL is obtained by bending the wiring module 20 (resin protector 25) in the direction opposite to the assembling direction when the wiring module 20 is assembled, and sequentially connecting the connecting units 20A to the plurality of single cells 11 one by one. The dimension is set to a size that is easy to assemble, and is set to a size that needs to be bent according to the height of the electrode terminals 12A and 12B, for example.
On the other hand, the pair of connecting projecting pieces 46 and 47 and the guide projecting piece 48 are not provided with the notch 49 on the upper side, and the upper end 50 extends substantially in the horizontal direction. For the force to bend in the assembling direction, the deformation of the resin protector 25 in the assembling direction is suppressed by contacting the lower surface of the upper wall 37 extending in the horizontal direction.

  In addition, locking portions 51 and 52 are provided at the distal ends of the pair of connecting protrusions 46 and 47 so as to protrude in directions opposite to each other. As shown in FIG. 5, the locking portions 51 and 52 have a shape that can be locked to the locked portions 40 </ b> A and 40 </ b> B provided in the connection insertion portion 36, and project in a stepped manner in a direction that is mutually opposite. There is a stepped portion 53 and an inclined portion 54 having a protruding dimension that is inclined in an inclined manner at the tip of the stepped portion 53. The guide projecting piece 48 and the guide receiving portion 41 are not provided with a configuration for restricting the movement in the left-right direction (alignment direction) corresponding to the locking portions 51 and 52 and the locked portions 40A and 40B.

  When a force that causes the resin protector 25 to bend upward (opposite to the assembly direction) is generated, if the adjacent connecting members 26 are moved away from each other, the upward bending deformation is large. There is a concern that the connection between the connecting members 26 adjacent to each other may be excessively released. Further, when a force is generated to bend the resin protector 25 downward (in the assembling direction) and the adjacent connecting members 26 move in a direction in which they are relatively separated from each other, it is not desired to bend in the assembling. There is a concern that the resin protector 25 may be bent.

  On the other hand, in this embodiment, when the connecting protrusions 46 and 47 are inserted into the connecting insertion part 36, the connecting protrusions 46 and 47 come into contact with the locked parts 40A and 40B and bend, thereby connecting protrusions 46 and 47. Is inserted to the normal connection position and the connecting member 26 is connected, the connecting projecting pieces 46 and 47 are restored and deformed, and the locking portions 51 and 52 are arranged in the insertion direction of the locked portions 40A and 40B. Is done. Thereby, with respect to the force to bend the resin protector 25 in the direction opposite to the assembly direction, the locked portions 40A and 40B are locked by the locking portions 51 and 52, thereby excessive bending. Further, it is possible to prevent the connection between the adjacent connecting members 26 from being released. Moreover, with respect to the force which is going to bend the resin protector 25 to an assembly direction, the deformation | transformation deformation of the resin protector 25 can be suppressed because the relative movement between the connection members 26 is controlled.

As shown in FIG. 3, the cover portion 55 is connected to the holding portion 27 via a hinge 55 </ b> A, and includes a cover body 56 and a cover engagement portion 57 that protrudes to one side in the arrangement direction of the cover body 56. And a cover engaged portion 60 that engages with the cover engaging portion 57 of the adjacent connecting member 26.
One corner where the cover engaging portion 57 of the cover main body 56 is arranged is cut out in a rectangular shape.

The cover engaging portion 57 is provided in a rectangular cutout portion of the cover main body 56, and as shown in FIG. 8, a plate-like protruding piece 58 protruding in the alignment direction, and a tip of the plate-like protruding piece 58 And a cover locking portion 59 protruding downward at the portion.
The plate-like projecting piece 58 is a rectangular plate shape that is long in the left-right direction, and the tip thereof has corners that are tapered at both ends in the width direction.

The protruding direction of the plate-like protruding piece 58 is inclined upward with respect to the horizontal direction (left-right direction) in a natural state (a state where no external force is applied).
The cover locking portion 59 protrudes in a step shape, and has a shape in which the protruding dimension decreases toward the tip side.
The cover engaged portion 60 is provided on the opposite side of the cover main body 56 in the arrangement direction of the connecting members 26 from the cover engaging portion 57, and the cover engaging portion 57 is inserted as shown in FIG. 7. A cover insertion portion 61 and a locking hole 62 in which the cover locking portion 59 is disposed.

  The cover insertion portion 61 includes a first insertion portion 61A and a second insertion portion 61B that are provided so that the cover main body 56 can be inserted through different height positions. The first insertion portion 61A is different from the cover main body 56. The second insertion portion 61 </ b> B is provided at a height position and is flush with the cover main body 56. Under the first insertion portion 61A, a punching hole 56A penetrating the cover main body 56 is formed for punching out the mold.

The locking hole 62 is a through hole that penetrates the cover main body 56, and has a rectangular shape that is long in the front-rear direction according to the shape of the cover locking portion 59.
Then, when the cover engaging portion 57 is inserted into the cover insertion portion 61 to the normal connection position, the cover locking portion 59 is disposed in the locking hole 62 and the adjacent cover portions 55 are connected. At this time, with respect to the force in the direction in which the adjacent cover portions 55 are separated from each other, the cover locking portion 59 is locked to the hole edge of the locking hole 62 so that the connected state of the cover portion 55 is maintained. .

Next, assembly of the wiring module 20 will be described.
First, the connecting member 21 is inserted in the horizontal direction from the side of the holding portion 27 where the partition wall 28 is not provided, and the connecting member 21 is held in the holding portion 27.
Next, the cover engaging portion 57 is engaged with the cover engaged portion 60, and the guide protrusion 48 and the connecting protrusions 46, 47 of the connecting member 26 are connected to the guide receiving portion 41 of the adjacent connecting member 26 and the connecting insertion. The part 36 is inserted.

  In this connection, first, the plate-like protrusion 58 of the cover engaging portion 57 is inserted into the cover insertion portion 61 of the cover engaged portion 60, and then the guide protrusion 48 is inserted into the guide receiving portion 41. Then, the connecting protrusions 46 and 47 are inserted into the connecting insertion part 36.

  When the plate-like protrusion 58 is inserted into the cover insertion portion 61, the guide protrusion 48 is inserted into the guide receiving portion 41, and the connection protrusions 46 and 47 are inserted into the connection insertion portion 36 to the normal connection position, the adjacent connection portions are connected. The member 26 is normally connected. Similarly, the resin protector 25 in a state in which the plurality of connecting members 21 are accommodated is formed by connecting all the connecting members 26 to be connected.

Next, the voltage detection terminal 23 connected to the terminal of the electric wire is attached to the connecting member 21 so as to be overlapped, the groove lid 34 is opened, the electric wire is passed through the electric wire receiving groove, and when the electric wire is arranged, the groove lid 34 is closed.
Thereby, the wiring module 20 in which a plurality of connecting units 20A are connected is formed (FIG. 2).

  Then, the wiring module 20 is lifted and moved above the unit cell group 13. At the time of this movement, the upper wall 37 of the connection insertion part 36 and the upper ends 50 of the connection protrusions 46, 47 in a state where the connection protrusions 46, 47 are locked in the left-right direction by the locked portions 40A, 40B. And since the upper wall 42 of the guide receiving part 41 and the upper end 50 of the guide protrusion 48 contact | abut, the downward bending deformation is suppressed, the wiring module 20 is lifted in a substantially horizontal state.

  Next, above the unit cell group 13, as shown in FIG. 11, one end side (the connecting member 26) of the wiring module 20 (resin protector 25) is in a horizontal state, and the other end The part side is bent upward and deformed. At this time, since a predetermined clearance CL is provided between the notch 49 at the lower end of the connecting protrusions 46 and 47 and the guide protrusion 48 and the engaging walls 39 and 44, wiring is performed by this clearance CL. The module 20 (resin protector 25) can be easily bent (FIG. 12).

  Then, the electrode terminals 12A and 12B of each unit cell 11 are passed through the connecting members 21 and the through holes 22 and 24 of the voltage detection terminal 23 from the connecting member 26 on one end side of the wiring module 20 to the connecting member 26 on the other end side in order. Then, the electrode terminals 12A and 12B are fastened with nuts. Then, the cover part 55 is closed. Thereby, the battery module 10 by which the wiring module 20 was assembled | attached to the cell group 13 is formed (FIG. 1).

According to the structure of the said embodiment, there exist the following effects.
(1) A wiring module 20 assembled to a unit cell group 13 including a plurality of unit cells 11 having positive and negative electrode terminals 12A and 12B, and a plurality of electric wires electrically connected to the plurality of unit cells 11. The resin protector 25 is configured by connecting a plurality of connecting members 26, and each connecting member 26 is provided at one end side of the connecting member 26 in the arrangement direction. Connecting protrusions 46 and 47 that protrude in the alignment direction, and connection insertion portions 36 that are provided on the other end side of the connection member 26 in the alignment direction and through which the connection protrusions 46 and 47 of the adjacent connection members 26 are inserted. The connection protrusions 46 and 47 form a clearance CL between the connection protrusions 46 and 47 and the connection insertion part 36 in the assembly direction to the unit cell group 13 while being inserted into the connection insertion part 36. Has a notch 49, bending deformation of the opposite side is allowed to the direction of assembly of the single cell group 13 in the resin protector 25 by a predetermined clearance CL.

According to the present embodiment, the predetermined clearance CL allows the resin protector 25 to bend and deform in the direction opposite to the direction in which the resin protector 25 is assembled to the unit cell group 13, so that the connecting members 26 are arranged with respect to the unit cell group 13. The work of assembling in order from one side of the direction to the other side is facilitated. Therefore, the workability of assembling the wiring module 20 to the single cell group 13 can be improved.
In addition, about the assembly direction to the cell group 13 in the resin protector 25, if it does not form the predetermined clearance CL by not providing the notch part 49, the assembly direction to the cell group 13 in the resin protector 25 is the same. Flexural deformation can be regulated. Therefore, for example, since bending deformation in the assembling direction when the resin protector 25 is lifted before assembling to the cell group 13 can be restricted, a decrease in workability when the wiring module 20 is moved to the assembling position is suppressed. it can.

(2) The connecting protrusions 46 and 47 have a thick shape in the assembling direction to the unit cell group 13.
In this way, it is possible to increase the rigidity of the connecting projections 46 and 47 with respect to the assembly direction and the force in the direction opposite to the assembly direction.

(3) The connecting protrusions 46 and 47 can be bent and deformed in a thinned direction which is a direction perpendicular to the assembly direction to the unit cell group 13. The locking portions 51 and 52 that are locked to the locked portions 40A and 40B of the connecting insertion portion 36 protrude in the direction in which the thickness is reduced.
In this way, the connecting member 26 can be held in a connected state.

(4) A pair of connection protrusions 46 and 47 are provided, and the locking portions 51 and 52 provided on the pair of connection protrusions 46 and 47 protrude in directions that are opposite to each other.
If it does in this way, the connection state of connecting member 26 can be held with simple composition.

(5) Each connection member 26 includes a guide protrusion 48 that protrudes along the connection protrusions 46 and 47 and a guide receiving portion 41 through which the guide protrusion 48 of the adjacent connection member 26 is inserted. When the adjacent connecting members 26 are connected, the distal end portion of the guide projecting piece 48 is inserted into the guide receiving portion 41 before the distal end portions of the connecting projecting pieces 46 and 47 are inserted into the connecting insertion portion 36. Is done.
In this way, when the adjacent connecting members 26 are connected, the tip of the guide protrusion 48 is guided before the tip of the connection protrusions 46 and 47 is inserted into the connection insertion part 36. Since it is inserted through the portion 41, the connecting member 26 can be connected with the guide protrusion 48 as a guide. Therefore, it is possible to improve workability when connecting the connecting member 26.

(6) Each connecting member 26 includes a holding portion 27 that holds the connection member 21 that connects the electrode terminals 12A and 12B, and a cover portion 55 that covers the holding portion 27. The cover engaging portion 57 that protrudes in the direction in which the connecting members 26 are arranged and the cover engaged portion 60 that engages with the cover engaging portion 57 of the adjacent connecting member 26 are provided. The protruding direction is inclined to the side opposite to the direction of assembling to the unit cell group 13 with the cover portion 55 opened.
If it does in this way, when the resin protector 25 is bent, it will become possible to suppress that the malfunction that engagement with the cover engaging part 57 and the cover engaged part 60 is cancelled | released will generate | occur | produce. .

<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 connecting protrusions 46, 47, the guide protrusion 48, and the cover engaging portion 57 are provided on the right end side of the connecting member 26, the connecting insertion portion 36, the guide receiving portion 41, and the cover engaged portion. 60 is provided on the left end side of the connecting member 26, but conversely, the connecting projecting pieces 46, 47, the guide projecting piece 48 and the cover engaging portion 57 are provided on the left end side of the connecting member 26, and the connecting insertion part 36 is provided. The guide receiving portion 41 and the cover engaged portion 60 may be provided on the right end side of the connecting member 26. Moreover, you may make it replace either of these to right and left.

(2) In the above embodiment, the connection member 21 connects the electrode terminals 12A and 12B of different polarities (in series connection), but is not limited to this, and connects the electrode terminals 12A and 12B of the same polarity (parallel). Connection). For example, another cell 11 is connected in parallel to the battery module 10 of the above embodiment, and the electrode terminals 12A and 12BA (B) having the same polarity in this parallel connection are connected by a plurality of connecting members 21. Good.

(3) The number of unit cells 11 constituting the battery module 10 is not limited to the number in the above embodiment, and the number of connection units 20A (connection members 26) in the wiring module 20 is also determined according to the number of unit cells 11. It can be changed as appropriate.
(4) In the above embodiment, the connection member 21 is inserted into the electrode terminals 12A and 12B and fastened with a nut. However, the configuration is not limited thereto, and the unit cell 11 includes a nut-type electrode terminal. A bolt may be fastened to the electrode terminal.

DESCRIPTION OF SYMBOLS 10 ... Battery module 11 ... Cell 12A, 12B ... Electrode terminal 13 ... Cell group 20 ... Wiring module 20A ... Connection unit 21 ... Connection member 23 ... Voltage detection terminal 25 ... Resin protector 26 ... Connection member 27 ... Holding part 28 ... Partition wall 30 ... Electric wire housing part 32 ... Electric wire routing part 35 ... Reinforcement part 36 ... Connection insertion part 37 ... Upper wall 39 ... Engagement wall 40A, 40B ... Locked part 41 ... Guide receiving part 42 ... Upper wall 44 ... Engagement walls 46, 47 ... connecting projection 48 ... guide projection 49 ... notch 51, 52 ... locking portion 55 ... cover portion 56 ... cover body 57 ... cover engagement portion 58 ... plate-like projection 59 ... cover engagement Stop part 60 ... Cover engaged part 61 ... Cover insertion part 61A ... First insertion part 61B ... Second insertion part 62 ... Locking hole CL ... Clearance

Claims (5)

A wiring module assembled to a unit cell group composed of a plurality of unit cells having positive and negative electrode terminals,
A resin protector in which a plurality of electric wires electrically connected to the plurality of single cells are arranged,
The resin protector is configured by connecting a plurality of connecting members,
Each of the connecting members is provided on one end side in the arranging direction of the connecting member and protrudes in the arranging direction, and on the other end side of the connecting member in the arranging direction. A connection insertion portion through which the connection protrusion is inserted;
The coupling protrusion in a state where the inserted into the coupling insertion portion, said has a cutout portion for forming a predetermined clearance between the connection insertion portion in the mounting direction of the cell group, wherein the cutout In addition, the lower end side is cut out so that the vertical dimension of the connecting projection piece becomes shorter toward the tip end side, and the upper end side of the connecting projection piece is not provided with the notch portion, and the connecting insertion portion Comprises an upper wall disposed on the upper side of the connecting projection piece, and an engagement wall disposed on the lower side of the connecting projection piece, and the predetermined clearance includes the connecting projection piece and the engaging wall. Is formed between, and by the predetermined clearance, bending deformation to the side opposite to the assembly direction to the unit cell group in the resin protector is allowed ,
The connection projection piece is a wiring module in which a dimension in an assembly direction to the unit cell group is larger than a dimension in a direction orthogonal to the assembly direction . The connecting projection piece can be bent and deformed in a direction orthogonal to the assembly direction to the unit cell group, and a front end portion of the connecting projection piece is engaged with a locked portion of the connection insertion portion. The wiring module according to claim 1, wherein the stop portion protrudes in a direction orthogonal to the assembly direction . The wiring module according to claim 2 , wherein a pair of the connecting protrusions are provided, and the locking portions provided on the pair of connecting protrusions protrude in directions opposite to each other . A wiring module assembled to a unit cell group composed of a plurality of unit cells having positive and negative electrode terminals,
A resin protector in which a plurality of electric wires electrically connected to the plurality of single cells are arranged,
The resin protector is configured by connecting a plurality of connecting members,
Each of the connecting members is provided on one end side in the arranging direction of the connecting member and protrudes in the arranging direction, and on the other end side of the connecting member in the arranging direction. A connection insertion portion through which the connection protrusion is inserted;
The connection protrusion has a notch portion that forms a predetermined clearance with the connection insertion portion in the assembly direction to the unit cell group in a state of being inserted into the connection insertion portion, In addition, the lower end side is cut out so that the vertical dimension of the connecting projection piece becomes shorter toward the tip end side, and the upper end side of the connecting projection piece is not provided with the notch portion, and the connecting insertion portion Comprises an upper wall disposed on the upper side of the connecting projection piece, and an engagement wall disposed on the lower side of the connecting projection piece, and the predetermined clearance includes the connecting projection piece and the engaging wall. Is formed between, and by the predetermined clearance, bending deformation to the side opposite to the assembly direction to the unit cell group in the resin protector is allowed,
Each of the connection members includes a guide protrusion that protrudes along the connection protrusion, and a guide receiving portion through which the guide protrusion of the adjacent connection member is inserted. In the connection, the wiring module in which the tip of the guide protrusion is inserted into the guide receiving portion before the tip of the connection protrusion is inserted into the connection insertion portion . A wiring module assembled to a unit cell group composed of a plurality of unit cells having positive and negative electrode terminals,
A resin protector in which a plurality of electric wires electrically connected to the plurality of single cells are arranged,
The resin protector is configured by connecting a plurality of connecting members,
Each of the connecting members is provided on one end side in the arranging direction of the connecting member and protrudes in the arranging direction, and on the other end side of the connecting member in the arranging direction. A connection insertion portion through which the connection protrusion is inserted;
The connection protrusion has a notch portion that forms a predetermined clearance with the connection insertion portion in the assembly direction to the unit cell group in a state of being inserted into the connection insertion portion, In addition, the lower end side is cut out so that the vertical dimension of the connecting projection piece becomes shorter toward the tip end side, and the upper end side of the connecting projection piece is not provided with the notch portion, and the connecting insertion portion Comprises an upper wall disposed on the upper side of the connecting projection piece, and an engagement wall disposed on the lower side of the connecting projection piece, and the predetermined clearance includes the connecting projection piece and the engaging wall. Is formed between, and by the predetermined clearance, bending deformation to the side opposite to the assembly direction to the unit cell group in the resin protector is allowed,
Each of the connecting members includes a holding portion that holds a connection member that connects the electrode terminals, and a cover portion that covers the holding portion,
The cover portion includes a cover engaging portion that protrudes in the direction in which the connecting members are arranged, and a cover engaged portion that engages with the cover engaging portion of an adjacent connecting member,
The wiring module in which the protruding direction of the cover engaging portion is inclined to the side opposite to the mounting direction to the unit cell group when the cover portion is opened .

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