阅读说明：本技术 电池布线模块 (Battery wiring module ) 是由 佐藤洋 森亮太 矢板久佳 铃木政巳 中须贺麻耶 于 2019-08-26 设计创作，主要内容包括：提供一种电池布线模块,能够减小伴随单电池的膨胀收缩而作用于模块侧端子的负荷。壳体具备：电线收纳部(20),收纳电线；多个端子收纳部(30),收纳模块侧端子(12)；以及第1弹性连结部(51、52),能弹性变形地将电线收纳部(20)及端子收纳部(30)在单电池的排列方向上连结。(Provided is a battery wiring module which can reduce the load acting on a module-side terminal along with the expansion and contraction of a single cell. The housing includes: an electric wire housing section (20) housing an electric wire; a plurality of terminal housing sections (30) for housing the module-side terminals (12); and a 1 st elastic connection portion (51, 52) that elastically deforms and connects the wire housing portion (20) and the terminal housing portion (30) in the arrangement direction of the single cells.)

1. A battery wiring module having:

a module-side terminal electrically connected to a bus bar connecting the battery terminals of the plurality of single cells to each other;

a wire, the module-side terminal being connected to one end side of the wire; and

a housing for accommodating the electric wire and the module side terminal,

the housing includes: an electric wire housing section housing the electric wire; a plurality of terminal receiving portions for receiving the module-side terminals; and a 1 st elastic connecting portion that elastically deforms and connects the wire housing portion and the terminal housing portion in the arrangement direction of the single cells.

2. The battery wiring module according to claim 1, wherein a 2 nd elastic coupling portion is provided that elastically deforms and couples the terminal receiving portions adjacent to each other in the arrangement direction of the unit cells.

3. The battery wiring module according to claim 1 or 2, wherein the case has a shielding wall portion that shields at least one of a gap between the wire housing portion and the terminal housing portion and a gap between the terminal housing portions adjacent in the arrangement direction of the unit cells.

4. The battery wiring module according to claim 3 when dependent on claim 2, wherein the 2 nd elastic connecting portion also serves as the shielding wall portion that shields a gap between the terminal receiving portions adjacent in the arrangement direction of the unit cells.

5. The battery wiring module according to any one of claims 1 to 4, wherein the wire housing portion has a plurality of concave portions in an arrangement direction of the plurality of unit cells, the concave portions being concave in a direction orthogonal to the arrangement direction of the plurality of unit cells and in a direction orthogonal to a stacking direction of the case with respect to the unit cells,

the terminal housing portion is provided in the recess.

6. The battery wiring module according to any one of claims 1 to 5, wherein the terminal housing part and the wire housing part have a lead-in port through which the wire is led from the terminal housing part to the wire housing part side, and at least one of the lead-in port on the terminal housing part side and the lead-in port on the wire housing part side has a protruding part protruding in a direction away from the 1 st elastic coupling part.

7. The battery wiring module according to claim 6, wherein the protruding portion is provided to both of the lead-in port on the terminal accommodating portion side and the lead-in port on the electric wire accommodating portion side.

8. The battery wiring module according to claim 7, wherein a protruding length of the protruding portion provided at the introduction port on the terminal accommodation portion side with respect to the 1 st elastic coupling portion is longer than a protruding length of the protruding portion provided at the introduction port on the electric wire accommodation portion side with respect to the 1 st elastic coupling portion.

9. The battery wiring module according to any one of claims 6 to 8, wherein the introduction port is open in a direction intersecting an introduction direction of introduction from the terminal housing portion to the electric wire housing portion side, and a distal end side in the opening direction is wider than a base end side.

10. The battery wiring module according to any one of claims 1 to 9, wherein the wire housing portion has an extended wall portion that extends from an end portion in an arrangement direction of the unit cells,

the plurality of terminal housing portions are provided, and at least one side of the terminal housing portion disposed opposite to the extension wall portion in the arrangement direction of the unit cells is connected to the first elastic connecting portion 1, and the other side of the terminal housing portion in the arrangement direction of the unit cells is connected to the extension wall portion by a second elastic connecting portion 3 that is elastically deformable.

11. The battery wiring module according to claim 10, wherein the extended wall portion has an opposing wall that opposes the terminal receiving portion connected by the 3 rd elastic connecting portion in the arrangement direction of the unit cells,

the opposing walls have reinforcing ribs.

Technical Field

The invention relates to a battery wiring module.

Background

For example, as disclosed in patent document 1, in a vehicle such as an electric vehicle or a hybrid vehicle, a battery wiring module is mounted on a high-voltage secondary battery mounted as a power supply for driving the vehicle. In the battery wiring module, the module-side terminal is connected to a bus bar that connects a plurality of single cells constituting the secondary battery to each other.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2015-2164

Disclosure of Invention

Problems to be solved by the invention

However, in the battery wiring module as described above, the module-side terminals are moved together with the bus bars along with thermal expansion and contraction of the plurality of single cells. At this time, when the position of the terminal housing portion housing the module-side terminal is fixed, the module-side terminal moves relative to the terminal housing portion. This may apply a load to the module-side terminals.

The present invention has been made to solve the above problems, and an object thereof is to provide a battery wiring module capable of reducing a load acting on a module-side terminal in association with expansion and contraction of a single cell.

Means for solving the problems

The battery wiring module for solving the above problems includes: a module-side terminal electrically connected to a bus bar connecting the battery terminals of the plurality of single cells to each other; a wire, the module-side terminal being connected to one end side of the wire; and a housing that houses the wire and the module-side terminal, the housing including: an electric wire housing section housing the electric wire; a plurality of terminal receiving portions for receiving the module-side terminals; and a 1 st elastic connecting portion that elastically deforms and connects the wire housing portion and the terminal housing portion in the arrangement direction of the single cells.

According to the above aspect, the wire housing portion and the terminal housing portion are elastically deformable and coupled in the arrangement direction of the single cells by the 1 st elastic coupling portion, so that even when the single cells expand/contract, the displacement thereof can be absorbed by the elastic deformation of the 1 st elastic coupling portion. That is, when the module-side terminal connected to the bus bar follows the expansion and contraction of the single cells, the terminal housing portion can follow the elastic deformation of the 1 st elastic connecting portion. This can suppress a load acting on the module-side terminal.

In the above battery wiring module, it is preferable that the 2 nd elastic connecting portion be provided to elastically deformable connect the terminal housing portions adjacent to each other in the arrangement direction of the unit cells.

According to the above aspect, the terminal receiving portions adjacent in the arrangement direction of the unit cells are elastically deformable and connected by the 2 nd elastic connecting portion, so that even when the unit cells expand/contract, the displacement thereof can be absorbed by the elastic deformation of the 2 nd elastic connecting portion. That is, the bus bars connected to the respective module-side terminals connected to the bus bars can be tracked along with the expansion and contraction of the cells. At this time, the module-side terminals may come close to each other or may be separated from each other, but as described above, the terminal housing portions are elastically deformable and coupled to each other by the 2 nd elastic coupling portion, so that the terminal housing portions can follow each other. This can suppress a load acting on the module-side terminal.

In the above battery wiring module, it is preferable that the case has a shielding wall portion that shields at least one of a gap between the wire housing portion and the terminal housing portion and a gap between the terminal housing portions adjacent to each other in the arrangement direction of the unit cells.

According to the above aspect, by providing the shielding wall portion in at least one of the gap between the wire housing portion and the terminal housing portion and the gap between the terminal housing portions adjacent to each other in the arrangement direction of the unit cells, it is possible to suppress spatters generated when the module-side terminal and the bus bar are connected and the bus bar and the battery terminal are connected by welding from scattering into the gap.

In the above battery wiring module, it is preferable that the 2 nd elastic connecting portion also serves as the shielding wall portion that shields a gap between the terminal housing portions adjacent in the arrangement direction of the unit cells.

According to the above aspect, the 2 nd elastic connecting portion also serves as the shielding wall portion, so that the 2 nd elastic connecting portion and the shielding wall portion can be prevented from being provided separately.

In the above battery wiring module, it is preferable that the wire housing portion has a plurality of concave portions in an arrangement direction of the plurality of unit cells, the concave portions are recessed in a direction orthogonal to the arrangement direction of the plurality of unit cells and a direction orthogonal to a stacking direction of the case with respect to the unit cells, and the terminal housing portion is provided in the concave portions.

According to the above aspect, by providing the terminal housing portion in the recess portion, it is possible to suppress an increase in size of the battery wiring module due to the terminal housing portion.

In the above battery wiring module, it is preferable that the terminal housing section and the wire housing section have a lead-in port through which the wire is led from the terminal housing section to the wire housing section, and at least one of the lead-in port on the terminal housing section side and the lead-in port on the wire housing section side has a protruding portion protruding in a direction away from the 1 st elastic coupling section.

According to the above aspect, since the protrusion protruding in the direction away from the 1 st elastic coupling portion is provided at least one of the lead-in opening on the terminal housing portion side and the lead-in opening on the electric wire housing portion side, when the electric wire is disposed at the lead-in opening, the electric wire can be separated from the 1 st elastic coupling portion by the protrusion. This can prevent the electric wire from being caught in the 1 st elastic connecting portion, and thus can prevent the electric wire from being damaged.

In the above battery wiring module, it is preferable that the protrusion is provided at both of the lead-in port on the terminal housing section side and the lead-in port on the electric wire housing section side.

According to the above aspect, the protrusion can more reliably separate the electric wire from the 1 st elastic coupling portion by the protrusion through both the lead-in port provided on the terminal accommodating portion side and the lead-in port provided on the electric wire accommodating portion side. This can prevent the electric wire from being caught in the 1 st elastic connecting portion, and thus can prevent the electric wire from being damaged.

In the above battery wiring module, it is preferable that a protruding length of the protruding portion provided at the inlet port on the terminal housing portion side with respect to the 1 st elastic coupling portion is longer than a protruding length of the protruding portion provided at the inlet port on the electric wire housing portion side with respect to the 1 st elastic coupling portion.

According to the above aspect, since the length of the protrusion provided at the inlet on the terminal housing portion side with respect to the 1 st elastic coupling portion is longer than the length of the protrusion provided at the inlet on the electric wire housing portion side with respect to the 1 st elastic coupling portion, the degree of freedom of the electric wire in the electric wire housing portion can be increased, and the movement of the electric wire in the terminal housing portion can be restricted.

In the above battery wiring module, it is preferable that the lead-in port is open in a direction intersecting a lead-in direction from the terminal housing portion to the electric wire housing portion, and a distal end side in the open direction is wider than a proximal end side.

According to the above aspect, since the distal end side in the opening direction of the inlet is wider than the proximal end side, the electric wire can be easily introduced from the distal end side in the opening direction of the inlet.

In the above battery wiring module, it is preferable that the wire housing portion has an extended wall portion extending from an end portion in the arrangement direction of the unit cells, the terminal housing portion is provided in plurality, at least one side in the arrangement direction of the unit cells of the terminal housing portion disposed opposite to the extended wall portion in the arrangement direction of the unit cells is connected by the 1 st elastic connecting portion, and the other side in the arrangement direction of the unit cells is connected by the 3 rd elastic connecting portion connected to the extended wall portion in an elastically deformable manner.

According to the above aspect, the terminal housing portions disposed to face the extending wall portion provided at the end portion of the wire housing portion are coupled by the 1 st elastic coupling portion and the 3 rd elastic coupling portion, and therefore, even in the terminal housing portions disposed to face the extending wall portion, displacement during expansion and contraction of the single cell can be absorbed by the 1 st elastic coupling portion and the 3 rd elastic coupling portion. Here, at the end portion of the battery wiring module in the arrangement direction of the cells, the wire housing portion may not be arranged on both sides of the terminal housing portion in the arrangement direction of the cells due to, for example, size reduction, and the wire housing portion may be arranged only on one side. Therefore, as described above, by providing the extended wall portion at the end portion of the wire housing portion in the arrangement direction of the single cells and elastically coupling the extended wall portion and the terminal housing portion by the 3 rd elastic coupling portion, the terminal housing portion can be elastically coupled on both sides in the arrangement direction of the single cells.

In the above battery wiring module, it is preferable that the extended wall portion has an opposing wall that opposes the terminal housing portion connected by the 3 rd elastic connecting portion in the arrangement direction of the single cells, and the opposing wall has a reinforcing rib.

According to the above aspect, by providing the reinforcing ribs on the opposing wall, the strength of the opposing wall can be ensured, and deformation of the opposing wall due to an external force can be suppressed.

Effects of the invention

According to the battery wiring module of the present invention, the load acting on the module-side terminals due to expansion and contraction of the single cells can be reduced.

Drawings

Fig. 1 is a perspective view of a battery wiring module in embodiment 1.

Fig. 2 is a perspective view showing a part of the battery wiring module in embodiment 1.

Fig. 3 is a plan view showing a part of the battery wiring module in embodiment 1.

Fig. 4 is a perspective view showing a part of the battery wiring module in embodiment 1.

Fig. 5 is a plan view showing a part of the battery wiring module in embodiment 1.

Fig. 6 is an enlarged plan view of a part of the battery wiring module according to embodiment 2.

Fig. 7 is a sectional view showing a part of the battery wiring module in embodiment 2.

Fig. 8 is a perspective view showing a part of the battery wiring module in embodiment 3.

Fig. 9 is a perspective view showing a part of the battery wiring module in embodiment 3.

Fig. 10 is a plan view showing a part of the battery wiring module in embodiment 3.

Detailed Description

Hereinafter, an embodiment of the battery wiring module will be described. In addition, in the drawings, a part of the structure is sometimes enlarged or simplified for convenience of explanation. Further, the dimensional ratio of each portion may be different from the actual one.

As shown in fig. 1, the battery wiring module 10 is mounted on the upper surface of a substantially rectangular parallelepiped secondary battery BT. The secondary battery BT is mounted on an electric vehicle, a hybrid vehicle, or the like, and supplies electric power to a motor for running of the vehicle. The secondary battery BT receives power supply from the traveling motor and the power generation motor depending on the state of charge and the operating state of the vehicle. In the following description, the X direction among three mutually orthogonal directions X, Y, Z in fig. 1 is described as the arrangement direction of the cells, the Y direction is described as the width direction of the cell wiring module, and the Z direction is described as the vertical direction.

The secondary battery BT includes a plurality of cells C, and a positive electrode terminal and a negative electrode terminal (not shown) of each cell C face the battery wiring module 10 side (upper side).

A plurality of the cells C are arranged in the X direction. At this time, the cells C are arranged so that positive and negative terminals, which are battery terminals, alternate in the X direction, which is the arrangement direction of the cells C. Each terminal is provided with a bus bar B that connects adjacent terminals, i.e., a positive electrode terminal and a negative electrode terminal, to each other. That is, the cells C are connected in series by the bus bar B. The bus bar B of the present example is connected to the positive electrode terminal and the negative electrode terminal of each cell C by welding, for example.

As shown in fig. 1, the battery wiring module 10 includes a case 11, a plurality of module-side terminals 12, and a plurality of wires 13 (see fig. 3).

The case 11 is formed in a shape in which, for example, the dimension in the X direction, which is the arrangement direction of the cells C, is longer than the dimension in the Y direction, which is the width direction. The housing 11 is formed in a shape having its upper side opened, and its opening is closed by a cover not shown.

The housing 11 is made of, for example, a resin member. The housing 11 has a wire housing 20 for housing the wire and terminal housings 30, 40, and 41 for housing the module-side terminals 12.

As shown in fig. 3 and 5, the module-side terminals 12 include flat plate-shaped terminal bodies 12a and tube portions 12b continuous from the terminal bodies 12 a. The cylindrical portion 12b is electrically connected to the core wire of the electric wire 13.

As shown in fig. 1 to 5, the wire housing 20 of the housing 11 is partitioned by a bottom 21 and a side wall 22 extending from an outer edge of the bottom 21 in the housing 11. The wire housing 20 has recesses 23 and 24 in the arrangement direction of the plurality of cells C, and the recesses 23 and 24 are recessed in the Y direction, which is a direction orthogonal to the arrangement direction of the plurality of cells C and orthogonal to the stacking direction of the case 11 with respect to the cells C. One terminal housing portion 30 is provided in each recess 23. The recess 24 is provided with two terminal receiving portions 40 and 41.

As shown in fig. 2 and 3, terminal housing 30 of case 11 is partitioned into case 11 by bottom 31 and side wall 32 extending from the outer edge of bottom 31. The terminal housing 30 is formed in a substantially rectangular parallelepiped shape elongated in the X direction. The terminal housing portion 30 and the recess 23 of the wire housing portion 20 are provided with gaps S1 on both sides in the X direction and one side in the Y direction of the terminal housing portion 30. The side wall 32 of the terminal housing 30 includes an opening 33 that opens in the X direction and an opening 34 that opens in the Y direction orthogonal to the X direction.

As shown in fig. 2 and 3, the opening 33 of the terminal housing 30 that opens in the X direction and the opening 22a that is formed so as to open on the side wall 22 of the wire housing 20 face each other in the X direction. Therefore, the electric wire 13 connected to the module-side terminal 12 housed in the terminal housing 30 can be introduced into the electric wire housing 20 by using the opening 33 of the terminal housing 30 and the opening 22a of the electric wire housing 20. That is, the opening 33 of the terminal housing 30 and the opening 22a of the wire housing 20 function as openings for introducing (inserting) the wire 13.

As shown in fig. 2 and 3, the opening 34 opens outward (opposite to the wire housing 20) in the Y direction. The opening 34 can expose a part of the terminal main body 12a of the module-side terminal 12 housed in the terminal housing 30 to the outside in the Y direction. The exposed portion of the terminal main body 12a partially exposed from the opening 34 is electrically connected to the bus bar B.

As shown in fig. 2 and 3, the 1 st elastic connecting portions 51 and 52 are provided between the wire housing 20 and the terminal housing 30. The 1 st elastic connecting portions 51 and 52 are located on both sides of the terminal housing portion 30 in the X direction with the terminal housing portion 30 interposed therebetween. Two 1 st elastic connecting portions 51 are provided on one side of the terminal housing portion 30 in the X direction, that is, on the side of the opening 33, and on both sides of the opening 33 in the Y direction. One 1 st elastic connecting portion 52 is provided on the other side in the X direction of the terminal accommodating portion 30. The 1 st elastic connecting portions 51 and 52 are formed in a substantially S-shape as viewed from the Y direction. This makes the 1 st elastic coupling portions 51 and 52 easily elastically deformable in the X direction. In the present embodiment, the 1 st elastic connecting portion 51 connects the lower portions of the side walls 22 on both sides across the opening 22a of the wire housing 20 and the upper portions of the side walls 32 on both sides across the opening 33 of the terminal housing 30. For example, when the terminal housing 30 moves in the Y direction relative to the wire housing 20, the 1 st elastic coupling portions 51 and 52 elastically deform the 1 st elastic coupling portions 51 and 52.

As shown in fig. 4 and 5, the terminal receiving portions 40 and 41 of the housing 11 are partitioned by a bottom portion 42 and a side wall 43 extending from an outer edge portion of the bottom portion 42 in the housing 11. Each of the terminal receiving portions 40 and 41 is configured to have a substantially rectangular parallelepiped shape elongated in the X direction. The terminal receiving portions 40, 41 and the recess 24 of the wire receiving portion 20 are provided with a gap S1 on one side of the terminal receiving portion 40 in the X direction, on the other side of the terminal receiving portion 41 in the X direction, and on one side of each of the terminal receiving portions 40, 41 in the Y direction. The side wall 43 of each of the terminal receiving portions 40 and 41 includes an opening 44 that opens on the side of the wire receiving portion 20 in the Y direction and an opening 45 that opens on the opposite side of the wire receiving portion 20 in the Y direction.

The openings 44 of the terminal receiving portions 40 and 41 face the openings 22b formed so as to open on the side walls 22 of the wire receiving portion 20 in the Y direction. The opening 22b is formed to open outward in the Y direction and is formed substantially in the center of the recess 24 in the X direction. The electric wires 13 connected to the module-side terminals 12 housed in the terminal housing portions 40 and 41 can be introduced into the electric wire housing portion 20 by using the opening portions 44 of the terminal housing portions 40 and 41 and the opening portions 22b of the electric wire housing portion 20. That is, the openings 44 of the terminal receiving portions 40 and 41 and the opening 22b of the wire receiving portion 20 function as openings for introducing (inserting) the wire 13.

The opening 45 of the terminal housing portions 40 and 41 can expose a part of the terminal main body 12a of the module-side terminal 12 housed in the terminal housing portions 40 and 41 to the outside. The exposed portion of the terminal main body 12a partially exposed from the opening 45 is electrically connected to the bus bar B.

As shown in fig. 4 and 5, the 1 st elastic connecting portion 53 is provided between the wire housing portion 20 and the terminal housing portions 40 and 41. The 1 st elastic linking portion 53 is provided at a position facing the terminal housing portions 40 and 41 and the wire housing portion 20 in the X direction. Here, the terminal housing portion 40 and the wire housing portion 20 face each other on one side in the X direction, and the terminal housing portion 41 and the wire housing portion 20 face each other on the other side in the X direction.

The 2 nd elastic connecting portion 54 is provided between the terminal housing portion 40 and the terminal housing portion 41 adjacent to each other in the X direction in the recess 24. The 2 nd elastic connecting portion 54 extends from the opposed surface 46 of each of the terminal housing portions 40 and 41 in the X direction, for example, and is connected between the terminal housing portions 40 and 41. The 2 nd elastic connecting portion 54 is configured to have a substantially U-shaped cross section, and is elastically deformable and connected between the terminal accommodating portions 40 and 41.

The 2 nd elastic coupling portion 54 extends from the Y direction outer side in the facing surface 46, and is formed to be bent outward in the Y direction in a U shape. That is, the 2 nd elastic connecting portion 54 protrudes outward in the Y direction from the terminal accommodating portions 40 and 41. The 2 nd elastic connecting portion 54 is located above the bus bar B in the Z direction, which is the vertical direction, and can abut against the bus bar B in the Z direction. Therefore, the bus bar B can be suppressed from moving upward.

The operation of the present embodiment will be described.

The battery wiring module 10 of the present embodiment is disposed on a secondary battery BT having a plurality of cells C. The module-side terminal 12 of the battery wiring module 10 is connected to a bus bar B that connects the positive and negative terminals of the single cells C aligned in the X direction. One end of the wire 13 is connected to the module-side terminal 12, and the other end of the wire 13 is connected to a battery monitoring ECU, not shown. The battery monitoring ECU can monitor the voltage of the single cell C.

Further, the 1 st elastic connecting portions 51, 52, 53 are provided between the wire housing portion 20 and the terminal housing portion 30 and between the wire housing portion 20 and the terminal housing portions 40, 41 of the battery wiring module 10, and allow movement (displacement) accompanying expansion/contraction of the single cells C. Further, a 2 nd elastic connecting portion 54 is provided between the terminal housing portions 40 and 41 adjacent to each other in the arrangement direction of the cells C, and allows movement (displacement) accompanying expansion and contraction of the cells C.

The effects of the present embodiment are described.

(1-1) the wire housing 20 and the terminal housing 30, 40, 41 are elastically deformable and connected in the arrangement direction of the unit cells C by the 1 st elastic connecting portions 51, 52, 53, so that even when the unit cells C expand/contract, the displacement thereof can be absorbed by the elastic deformation of the 1 st elastic connecting portions 51, 52, 53. That is, when the module-side terminal 12 connected to the bus bar B follows the expansion and contraction of the single cells C, the terminal receiving portions 30, 40, and 41 can follow the elastic deformation of the 1 st elastic connecting portions 51, 52, and 53. This can suppress the load acting on the module-side terminals 12.

(1-2) the terminal receiving portions 40 and 41 adjacent to each other in the arrangement direction of the unit cells C are elastically deformable by the 2 nd elastic connecting portion 54, and thus even when the unit cells C expand/contract, the displacement thereof can be absorbed by the elastic deformation of the 2 nd elastic connecting portion 54. That is, the bus bars B connected to the module-side terminals 12 connected to the bus bars B can be tracked along with the expansion and contraction of the cells C. At this time, the module-side terminals 12 may come close to each other or may be apart from each other, but as described above, the terminal receiving portions 40 and 41 can follow each other by elastically deforming and coupling the terminal receiving portions 40 and 41 to each other by the 2 nd elastic coupling portion 54. This can suppress the load acting on the module-side terminals 12.

(1-3) since the gap S2 between the adjacent terminal receiving portions 40 and 41 in the arrangement direction of the unit cells C has the 2 nd elastic connecting portion 54 constituting the shielding wall portion, it is possible to suppress spatters generated when the module-side terminal 12 and the bus bar B are connected and the bus bar B and the battery terminal are connected by welding from scattering into the gap S2. This can prevent spatters from being scattered on the electric wire 13, and can prevent damage to the electric wire 13.

(1-4) the 2 nd elastic connecting portion 54 also serves as a shielding wall portion, so that the provision of the 2 nd elastic connecting portion 54 and the shielding wall portion individually can be suppressed.

(1-5) by providing the terminal housing portions 30, 40, 41 in the recessed portions 23, 24, it is possible to suppress an increase in size of the battery wiring module 10 due to the terminal housing portions 30, 40, 41.

(1-6) since the elastic connection portions 51, 52, 53, 54 are provided only in the terminal housing portions 30, 40, 41, the rigidity of the wire housing portion 20 side can be sufficiently ensured.

(1-7) since the elastic connecting portions 51, 52, 53, and 54 have the same height (length) as the side walls 22, 32, and 43 adjacent to each other in the Z direction, which is the vertical direction, it is possible to suppress an increase in the Z direction size caused by the elastic connecting portions 51, 52, 53, and 54.

(embodiment 2)

Next, embodiment 2 of the battery wiring module will be described with reference to fig. 6 and 7. In the present embodiment, differences from embodiment 1 will be mainly described, and the same components as those of embodiment 1 will be denoted by the same reference numerals, and some or all of the description thereof may be omitted.

As shown in fig. 6, the openings 22a and 33 of the battery wiring module 10A are located on both sides of the 1 st elastic connecting portion 51 in the X direction, as in embodiment 1. The openings 22a and 33 have protruding portions 61a, 61b, 62a, and 62b protruding in the Y direction, which is a direction away from the 1 st elastic coupling portion 51.

The projections 61a and 61b are provided in the opening 22a of the wire housing 20. The protruding portion 61a is located inside the opening 22a in the Y direction, and protrudes outward in the Y direction from the 1 st elastic coupling portion 51 located inside the two 1 st elastic coupling portions 51 in the Y direction. The protruding portion 61b is located on the Y-direction outer side in the opening 22a, and protrudes inward in the Y-direction from the 1 st elastic coupling portion 51 located on the Y-direction outer side in the two 1 st elastic coupling portions 51.

The protruding portions 62a and 62b are provided in the opening 33 of the terminal accommodating portion 30. The protruding portion 62a is located on the Y direction inner side in the opening 33, and protrudes outward in the Y direction from the 1 st elastic coupling portion 51 located on the Y direction inner side in the two 1 st elastic coupling portions 51. The protruding portion 62b is located on the Y-direction outer side in the opening 33, and protrudes inward in the Y-direction from the 1 st elastic coupling portion 51 located on the Y-direction outer side in the two 1 st elastic coupling portions 51. The projection length L2a of the projection 62a with respect to the 1 st elastic linking portion 51 located inward in the Y direction is longer than the projection length L1a of the projection 61a with respect to the 1 st elastic linking portion 51 located inward in the Y direction. The projection length L2b of the projection 62b with respect to the 1 st elastic linking portion 51 positioned on the outer side in the Y direction is longer than the projection length L1b of the projection 61b with respect to the 1 st elastic linking portion 51 positioned on the outer side in the Y direction. In this example, the projection length L1a of the projection 61a and the projection length L1b of the projection 61b are the same. Similarly, the projection length L2a of the projection 62a and the projection length L2b of the projection 62b are the same length.

As shown in fig. 7, the opening 22a is open to the upper side in the Z direction intersecting the X direction which is the drawing direction in which the electric wire 13 is drawn from the terminal housing 30 toward the electric wire housing 20, and the width W1b on the distal end side in the opening direction is wider than the width W1a on the proximal end side. The opening 33 is open toward the upper side in the Z direction intersecting the X direction which is the drawing direction in which the electric wire 13 is drawn from the terminal housing 30 toward the electric wire housing 20, and the width W2b on the distal end side in the opening direction is wider than the width W2a on the proximal end side.

According to the above-described embodiment, the following effects can be obtained in addition to the effects (1-1) to (1-7) of embodiment 1.

(2-1) the opening 33 as the inlet on the terminal housing part 30 side and the opening 22a as the inlet on the electric wire housing part 20 side have protruding parts 61a, 61b, 62a, 62b protruding in a direction away from the 1 st elastic connecting part 51. Thus, when the electric wire 13 is disposed in the openings 22a and 33, the electric wire 13 can be separated from the 1 st elastic connecting portion 51 by the protrusions 61a, 61b, 62a, and 62 b. Therefore, the electric wire 13 can be prevented from being pinched by the 1 st elastic connecting portion 51, and therefore damage to the electric wire 13 can be prevented. In particular, by providing the protruding portions 61a, 61b, 62a, and 62b in both the opening 22a and the opening 33, the electric wire 13 can be separated from the 1 st elastic coupling portion 51 more reliably by the protruding portions 61a, 61b, 62a, and 62 b. This can prevent the electric wire 13 from being caught between the two 1 st elastic connecting portions 51, and thus can prevent the electric wire 13 from being damaged.

(2-2) the projection lengths L2a, L2b of the projections 62a, 62b with respect to the 1 st elastic linking part 51 are longer than the projection lengths L1a, L1b of the projections 61a, 61b with respect to the 1 st elastic linking part 51. Therefore, the opening 22a on the wire housing 20 side is relatively wider than the opening 33 on the terminal housing 30 side. Therefore, the degree of freedom of the electric wire 13 in the opening 22a on the electric wire housing section 20 side can be increased, and the movement of the electric wire 13 in the opening 33 on the terminal housing section 30 side can be restricted.

(2-3) the widths W1b, W2b of the openings 22a, 33 on the distal end side in the Z direction, which is the opening direction thereof, are wider than the widths W1a, W2a on the proximal end side, so that the electric wire 13 can be easily introduced from the open distal end side of the openings 22a, 33.

(embodiment 3)

Next, embodiment 2 of the battery wiring module will be described with reference to fig. 8, 9, and 10. In the present embodiment, differences from embodiment 1 will be mainly described, and the same components as those of embodiment 1 will be denoted by the same reference numerals, and some or all of the description thereof will be omitted.

As shown in fig. 8, 9 and 10, the battery wiring module 10B includes a wire housing portion 20 and a plurality of terminal housing portions 30.

The terminal housing portions 30 shown in fig. 8, 9, and 10 are terminal housing portions located on one end portion side in the X direction, which is the arrangement direction of the single cells C, among the plurality of terminal housing portions 30. The two terminal housing portions 30 located at one end in the X direction partially overlap in the Y direction, which is the width direction of the battery wiring module. In the following description, the terminal housing portions that partially overlap in the Y direction are referred to as terminal housing portions 71 and 72. The terminal receiving portion 71 is located relatively outside the terminal receiving portion 72 in the Y direction. The terminal housing 72 is located at an end portion side in the X direction relative to the terminal housing 71.

The wire housing portion 20 has an extending wall portion 74 extending from an end 73 in the X direction, which is the arrangement direction of the cells C. The extending wall portion 74 includes a 1 st extending wall 74a extending from the end portion 73 in the X direction, and a 2 nd extending wall 74b extending outward in the Y direction orthogonal to the tip side of the 1 st extending wall 74 a. The 2 nd extending wall 74b faces the terminal accommodating portion 71 in the X direction. More specifically, the 2 nd extending wall 74b is opposed to the wall portion 75, which is the opposite side in the X direction from the wall portion provided with the opening 33, of the side walls 32 constituting the terminal accommodating portion 71 in the X direction. Further, the terminal housing portion 71 and the 2 nd extending wall 74b of the extending wall 74 are coupled by the 3 rd elastic coupling portion 76. The 3 rd elastic coupling portion 76 is formed in a substantially S-shape as viewed from the Y direction, similarly to the 1 st elastic coupling portions 51 and 52. This makes the 3 rd elastic coupling portion 76 easily elastically deformable in the X direction. That is, in the terminal housing portions 71 disposed to face the extending wall portions 74 in the X direction in this example, one side in the X direction is connected by the 1 st elastic connecting portion 51, and the other side in the X direction is connected by the 3 rd elastic connecting portion 76 that is elastically deformable and connected to the extending wall portions 74.

The 2 nd extending wall 74b as the opposing wall of the extending wall 74 has a reinforcing rib 77. The reinforcing rib 77 has two 1 st reinforcing walls 77a and one 2 nd reinforcing wall 77 b. The two 1 st reinforcing walls 77a extend from surfaces on the opposite side of the 3 rd elastic linking portion 76 at both Y-direction side ends of the 2 nd extending wall 74 b. The 2 nd reinforcing wall 77b is connected between the two 1 st reinforcing walls 77a, and extends from the surface on the opposite side of the 3 rd elastic linking portion 76 at both Y-direction side end portions of the 2 nd extending wall 74 b. By providing the 2 nd extending wall 74b with the reinforcing ribs 77 in this manner, the 2 nd extending wall 74b can be suppressed from being deformed by an external force.

The terminal housing portion 72 includes an opening 33 that opens on one side in the X direction and an opening 34 that opens in the Y direction orthogonal to the X direction. The terminal housing portion 72 and the end portion 73 of the wire housing portion 20 are connected by the 1 st elastic connection portion 51. The end of the terminal housing 72 opposite to the 1 st elastic coupling portion 51 is coupled to an extended wall 78 provided at the X-direction end of the housing 11 by a 4 th elastic coupling portion 79. That is, one side of the terminal housing portion 72 in the X direction is connected by the 1 st elastic connection portion 51, and the other side in the X direction is connected by the 4 th elastic connection portion 79 that is elastically deformable and connected to the extending wall portion 78. In addition, a part of the terminal housing portion 72 overlaps the terminal housing portion 71 in the X-Y plane and in the Y direction which is the width direction of the battery wiring module. Therefore, the increase in size of the battery wiring module 10B in the X direction due to the terminal receiving portion 72 can be suppressed.

According to the above-described embodiment, the following effects can be obtained in addition to the effects (1-1) to (1-7) of embodiment 1.

(3-1) the terminal housing portion 71 disposed to face the extending wall portion 74 provided at the end portion 73 of the wire housing portion 20 is coupled by the 1 st elastic coupling portion 51 and the 3 rd elastic coupling portion 76, so that even in the terminal housing portion 71 disposed to face the extending wall portion 74, the 1 st elastic coupling portion 51 and the 3 rd elastic coupling portion 76 can absorb displacement when the single cell C expands/contracts. Here, at the end portion of the battery wiring module 10B in the arrangement direction of the cells C, the wire housing portions 20 may not be arranged on both sides of the terminal housing portion 71 in the X direction due to, for example, size reduction, and the wire housing portions 20 may be arranged only on one side. Therefore, as described above, the extending wall portion 74 is provided at the end 73 in the X direction of the wire housing portion 20, and the extending wall portion 74 and the terminal housing portion 71 are elastically coupled by the 3 rd elastic coupling portion 76, whereby the terminal housing portion 71 can be elastically coupled on both sides in the X direction.

(3-2) by providing the reinforcing rib 77 on the 2 nd extending wall 74b as the opposing wall, the strength of the 2 nd extending wall 74b can be ensured, and the 2 nd extending wall 74b as the opposing wall can be suppressed from being deformed by an external force.

The above embodiments can be modified as follows. The above embodiments and the following modifications can be combined and implemented within a range not technically contradictory to each other.

In embodiment 2 described above, the protruding lengths l2A, l2B of the protruding portions 62A, 62B with respect to the 1 st elastic coupling portion 51 are longer than the protruding lengths l1A, l1B of the protruding portions 61A, 61B with respect to the 1 st elastic coupling portion 51, but the present invention is not limited to this. For example, the lengths of the projections 61A, 61B, 62A, and 62B may be the same as the lengths of the projections l1A, l1B, l2A, and l2B from the 1 st elastic linking portion 51. The projection lengths l2A, l2B of the projections 62A, 62B with respect to the 1 st elastic coupling portion 51 may be shorter than the projection lengths l1A, l1B of the projections 61A, 61B with respect to the 1 st elastic coupling portion 51.

In embodiment 2 described above, the widths W1b, W2b on the distal end side in the Z direction, which is the opening direction of the openings 22a, 33, are wider than the widths W1a, W2a on the proximal end side. The widths W1a, W1b, W2a, and W2b of the openings 22a and 33 may be the same. The widths W1b, W2b on the distal end side may be narrower than the widths W1a, W2a on the proximal end side.

Although the projections 61a, 61b, 62a, and 62b are provided in the embodiment 2, at least one of the projections 61a, 61b, 62a, and 62b may be provided. Even with such a configuration, since the electric wire 13 can be separated from the 1 st elastic linking part 51 by at least one of the protrusions 61a, 61b, 62a, and 62b, the electric wire 13 can be prevented from being caught by the 1 st elastic linking part 51, and damage to the electric wire 13 can be prevented.

Although the reinforcing ribs 77 are provided in the embodiment 3, a configuration in which these are omitted may be employed. The shape of the reinforcing rib 77 can be appropriately changed.

In each of the above embodiments, the 2 nd elastic connecting portion 54 is provided between the adjacent terminal accommodating portions 40 and 41, but the 2 nd elastic connecting portion 54 may be omitted. In this case, for example, the adjacent terminal housing portions 40 and 41 may be connected by a rigid body, or the terminal housing portions 40 and 41 may be integrally formed with each other.

In each of the above embodiments, the 2 nd elastic connecting portion 54 is also configured to serve as the 2 nd elastic connecting portion 54 when the gap S2 between the terminal housing portions 40 and 41 adjacent in the arrangement direction of the unit cells C is shielded, but a shielding wall portion and the 2 nd elastic connecting portion 54 may be provided separately.

Although not particularly mentioned in the above embodiments, a shielding wall portion may be provided to shield a portion of the gap S1 between the terminal housing portions 30, 40, and 41 and the wire housing portion 20 facing the bus bar B.

In each of the above embodiments, the 2 nd elastic connecting portion 54 is provided to have a shielding wall portion, but a configuration in which the shielding wall portion is omitted may be employed.

In the above embodiments, the terminal receiving portions 30, 40, and 41 are provided in the recesses 23 and 24, but the present invention is not limited to this.

Description of the reference numerals

10. 10A, 10B: battery wiring module

11: shell body

12: module side terminal

13: electric wire

20: electric wire storage part

30. 40, 41: terminal receiving part

51. 52, 53: 1 st elastic linking part

54: elastic connection part 2 constituting shielding wall part

22 a: opening part (leading-in port)

23. 24: concave part

33: opening part (leading-in port)

61a, 61b, 62a, 62 b: projection part

71. 72: terminal receiving part

74: extended wall part

74 b: extension wall 2 (opposite wall)

76: 3 rd elastic linking part

77: reinforcing rib

78: extended wall part

B: bus bar

C: single cell

L1a, L1b, L2a, L2 b: length of protrusion

S1, S2: a gap.