Wiring module

Abstract

To provide a wiring module capable of suppressing damage of a connection part between a circuit board and a wire.SOLUTION: A wiring module 20 is mounted to a plurality of power storage elements. The wiring module 20 comprises a plurality of wires 40, a plurality of circuit boards 21 and a protector 50 holding the plurality of circuit boards 21 and the plurality of wires 40. Each wire 40 is electrically connected with each circuit board 21, and the protector 50 includes a wire storage part 62 extending in a first direction and storing the plurality of wires 40 therein. The wire storage part 62 includes: a peripheral wall 63 disposed so as to enclose the plurality of wires 40; and a first bent rib 54 and a second bent rib 55 extending from the peripheral wall 63 to the inside of the wire storage part 62. The first bent rib 54 is disposed at a position displaced from the second bent rib 55 in the first direction. The first bent rib 54 extends from the peripheral wall 63 to one side in a second direction, which is orthogonal to the first direction, and the second bent rib 55 extends from the peripheral wall 63 to the other side in the second direction.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present disclosure relates to a wiring module.

Background Art

[0002] High-voltage battery packs used in electric vehicles, hybrid vehicles, etc. usually have a large number of batteries stacked and are electrically connected in series or in parallel by a wiring module. As such a wiring module, a battery connection module described in Japanese Patent Application Laid-Open No. 2019-23996 (hereinafter referred to as Patent Document 1) has been conventionally known. The battery connection module described in Patent Document 1 includes a bus bar and a flexible circuit board connected to the bus bar. The flexible circuit board includes a connector at its end.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Unlike the above configuration, the wiring module may include a bus bar, a circuit board connected to the bus bar, and an electric wire connected to the circuit board. Also, a connector may be connected to the end of the electric wire. The connection between the circuit board and the electric wire can be performed by, for example, soldering. In such an arrangement module, the connection portion between the circuit board and the electric wire may be damaged when, for example, vibration or stress is applied to the electric wire, or when the electric wire is pulled during the fitting operation of the connector.

Means for Solving the Problems

[0005] The wiring module of this disclosure is a wiring module attached to a plurality of energy storage elements, comprising a plurality of electric wires, a plurality of circuit boards, and a protector that holds the plurality of circuit boards and the plurality of electric wires, wherein each electric wire is electrically connected to each of the circuit boards, and the protector comprises an electric wire housing portion extending in a first direction and housing the plurality of electric wires, the electric wire housing portion comprising a peripheral wall arranged to surround the plurality of electric wires, and a first bent rib and a second bent rib extending inward from the peripheral wall to the electric wire housing portion, wherein the first bent rib is positioned offset from the second bent rib in the first direction, the first bent rib extends from the peripheral wall to one side in a second direction perpendicular to the first direction, and the second bent rib extends from the peripheral wall to the other side in the second direction. [Effects of the Invention]

[0006] According to this disclosure, it is possible to provide a wiring module that can suppress damage to the connection between the circuit board and the electric wire. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 is a plan view of the energy storage module according to Embodiment 1, showing the wire housing section in an open state. [Figure 2] Figure 2 is a plan view of the energy storage module according to Embodiment 1, showing the state in which the wire housing section is closed. [Figure 3] Figure 3 is a perspective view of the protector according to Embodiment 1. [Figure 4] Figure 4 is an enlarged plan view of the wiring module according to Embodiment 1, showing the wire housing section in an open state. [Figure 5] Figure 5 is an enlarged plan view of the wiring module according to Embodiment 1, showing the state in which the wire housing section is closed. [Figure 6] Figure 6 is a cross-sectional view of AA in Figure 5. [Figure 7]Figure 7 is an enlarged front view of the protector according to Embodiment 1, and shows the projected area of ​​the internal space of the wire housing section. [Figure 8] Figure 8 is an enlarged plan view of the wiring module according to Embodiment 2, showing the wire housing section in an open state. [Figure 9] Figure 9 is an enlarged plan view of the wiring module according to Embodiment 2, showing the state in which the wire housing section is closed. [Figure 10] Figure 10 is a cross-sectional view of BB in Figure 9. [Figure 11] Figure 11 is a perspective view of the protector according to Embodiment 2. [Figure 12] Figure 12 is an enlarged front view of the protector according to Embodiment 2, and shows the projected area of ​​the internal space of the wire housing section. [Figure 13] Figure 13 is an enlarged plan view of the wiring module according to Embodiment 3, showing the wire housing section in an open state. [Figure 14] Figure 14 is an enlarged plan view of the wiring module according to Embodiment 3, showing the state in which the wire housing section is closed. [Figure 15] Figure 15 is a cross-sectional view of the CC shown in Figure 14. [Figure 16] Figure 16 is a perspective view of the protector according to Embodiment 3. [Figure 17] Figure 17 is an enlarged front view of the protector according to Embodiment 3, and shows the projected area of ​​the internal space of the wire housing section. [Modes for carrying out the invention]

[0008] [Description of Embodiments in this Disclosure] First, the embodiments of this disclosure will be listed and described. [1] The wiring module of the present disclosure is a wiring module attached to a plurality of power storage elements, and includes a plurality of electric wires, a plurality of circuit boards, and a protector that holds the plurality of circuit boards and the plurality of electric wires. Each of the electric wires is electrically connected to each of the circuit boards. The protector includes a wire accommodating portion that extends in a first direction and accommodates the plurality of electric wires. The wire accommodating portion includes a peripheral wall arranged to surround the plurality of electric wires, a first bending rib and a second bending rib that extend from the peripheral wall inwardly of the wire accommodating portion. The first bending rib is arranged at a position shifted from the second bending rib in the first direction. The first bending rib extends from the peripheral wall to one side in a second direction orthogonal to the first direction, and the second bending rib extends from the peripheral wall to the other side in the second direction.

[0009] According to such a configuration, since the first bending rib and the second bending rib can contact the plurality of electric wires from opposite sides in the second direction, the plurality of electric wires can be held in the wire accommodating portion in a state of being bent by the first bending rib and the second bending rib. Therefore, the portions of the plurality of electric wires bent by the first bending rib and the second bending rib are difficult to move in the first direction with respect to the protector inside the wire accommodating portion. Thus, when vibration or stress is applied to the plurality of electric wires, it is possible to suppress the generation of stress at the connection portion between the electric wire and the circuit board, and thus suppress damage to the connection portion between the electric wire and the circuit board.

[0010] [2] In the above [1], the wire accommodating portion further includes a pressing rib that extends from the peripheral wall inwardly of the wire accommodating portion. The pressing rib is arranged between the first bending rib and the second bending rib in the first direction. It is preferable that the plurality of electric wires are sandwiched by the peripheral wall and the pressing rib in a third direction that is orthogonal to the first direction and intersects the second direction.

[0011] According to such a configuration, since the plurality of electric wires can be sandwiched by the peripheral wall and the pressing rib, it becomes easier to hold the plurality of electric wires more firmly by the wire accommodating portion around the first bending rib and the second bending rib.

[0012] [3] In [2] above, it is preferable that the pressing rib has a concave portion that forms an arc shape when viewed in the first direction.

[0013] According to such a configuration, it becomes easy to increase the contact area between the pressing rib and the plurality of electric wires.

[0014] [4] In any one of [1] to [3] above, it is preferable that the first bending rib and the second bending rib each have a concave portion that forms an arc shape when viewed in the first direction.

[0015] According to such a configuration, it becomes easy to increase the contact area between the first bending rib and the second bending rib and the plurality of electric wires.

[0016] [5] In any one of [1] to [4] above, the plurality of electric wires are bundled to form a trunk line portion, and the projected area of the internal space of the electric wire housing portion when viewed in the first direction is preferably set to be smaller than the cross-sectional area of the trunk line portion.

[0017] According to such a configuration, it becomes easy for the trunk line portion to come into contact with the first bending rib and the second bending rib.

[0018] [6] In any one of [1] to [5] above, the peripheral wall includes a first wall portion from which the first bending rib extends and a second wall portion from which the second bending rib extends. The second wall portion faces the first wall portion in the second direction, and the interval between the first bending rib and the second bending rib in the first direction is preferably set to be smaller than three times the interval between the first wall portion and the second wall portion in the second direction.

[0019] According to such a configuration, the frictional force between each of the first bending rib and the second bending rib and the plurality of electric wires can be increased.

[0020] [7] In any one of the above [1] to [6], the protector comprises a protector body and a cover that is superimposed on the protector body in a direction perpendicular to the first direction, and the wire housing portion is preferably composed of the protector body and the cover.

[0021] This configuration allows for a simple construction of the wire housing section.

[0022] [Details of the embodiments of this disclosure] Embodiments of the present disclosure are described below. This disclosure is not limited to these examples, but is indicated by the claims, and all modifications within the meaning and scope of the claims are intended to be included. In the drawings, some parts of the configuration may be exaggerated or simplified for illustrative purposes. Also, the dimensional ratios of the parts may differ in the drawings. In this specification, “orthogonal” includes not only strictly orthogonal but also approximately orthogonal to the extent that the function and effect of the present embodiment is achieved.

[0023] Furthermore, in this specification, "facing" means that two surfaces or members are in a position where they face each other, and includes not only cases where they are completely facing each other, but also cases where they are partially facing each other. Furthermore, in this specification, "facing" includes both cases where a member other than the two parts is interposed between the two parts, and cases where nothing is interposed between the two parts.

[0024] <Embodiment 1> Embodiment 1 of this disclosure will be described with reference to Figures 1 to 7. The energy storage module 10 equipped with the wiring module 20 of this embodiment is mounted on a vehicle as a power source for driving a vehicle such as an electric vehicle or a hybrid vehicle. In the following description, the direction indicated by arrow Z is described as upward, the direction indicated by arrow X is described as forward, and the direction indicated by arrow Y is described as left. In this embodiment, the front-rear direction is an example of a first direction, the left-right direction is an example of a second direction, and the up-down direction is an example of a third direction. Note that for multiple identical components, reference numerals may be assigned to only some of the components, and the reference numerals of other components may be omitted.

[0025] As shown in Figures 1 and 2, the energy storage module 10 comprises a plurality of energy storage elements 11 arranged in a row, and a wiring module 20 mounted on the upper surface of the plurality of energy storage elements 11. The wiring module 20 is attached to the right side of the plurality of energy storage elements 11. Although not shown, a similar wiring module is also attached to the left side of the plurality of energy storage elements 11. The energy storage elements 11 are flat rectangular parallelepipeds with energy storage elements housed inside. The energy storage elements 11 have two electrode terminals 12, one near the right end and the other near the left end of the upper surface. One of the two electrode terminals 12 is the positive electrode, and the other is the negative electrode.

[0026] (Wiring module 20) As shown in Figure 1, the wiring module 20 includes a busbar 30 connected to the electrode terminals 12 of the energy storage element 11, a circuit board 21 connected to the busbar 30, electric wires 40 connected to the circuit board 21, and a protector 50 that holds the busbar 30, the circuit board 21, and the electric wires 40.

[0027] The busbar 30 is made of a metal plate and has a rectangular shape when viewed from above. The busbar 30 connects adjacent electrode terminals 12 in the stacking direction (front-to-back direction) of the multiple energy storage elements 11. Although not shown in the diagram, the wiring module 20 may also include an output busbar connected to the electrode terminals 12 (total positive or total negative) of the energy storage elements 11 located at the ends in the stacking direction. The connection between the busbar 30 and the electrode terminals 12 is made by welding or the like. The busbar 30 is housed in the busbar housing section 51 of the protector 50, which will be described later.

[0028] (Circuit board 21) In this embodiment, the circuit board 21 is a flexible substrate, and is constructed by forming conductive paths on the surface of a flexible insulating sheet using printed wiring technology. As shown in Figure 4, the circuit board 21 comprises a substrate body 22 and an extension portion 23 extending from the substrate body 22. The substrate body 22 has a roughly rectangular shape in plan view. The substrate body 22 is provided with an insertion hole 22B, through which a projection 53B, described later, is inserted. The substrate body 22 is provided with a wire land 22A, which is located at one end of the conductive path. The wire land 22A is connected to the wire 40 by soldering or the like.

[0029] The extension portion 23 is in the shape of a wire spring and is configured to be expandable and contractible. The provision of the extension portion 23 allows the end of the extension portion 23 opposite to the substrate body 22 (the tip) to be displaced by a predetermined dimension relative to the substrate body 22. A connecting land 23A is provided at the tip of the extension portion 23, which is located at the other end of the conductive path. The connecting land 23A is electrically connected to the busbar 30 via a small metal piece 15.

[0030] Although not shown in the diagram, fuses or the like may be provided in the conductive paths of the circuit board 21. Furthermore, the circuit board 21 may have multiple conductive paths, and these conductive paths may include part of a thermistor circuit for measuring the temperature of the energy storage element 11.

[0031] (Power line 40, main line section 41) The wires 40 connected to the circuit board 21 are housed together in the wire housing section 62 of the protector 50, which will be described later. The multiple wires 40 are arranged extending in the front-rear direction within the wire housing section 62. In addition to voltage detection wires electrically connected to the busbar 30, the multiple wires 40 may also include, for example, temperature detection wires connected to a thermistor that measures the temperature of the energy storage element 11. The multiple wires 40 are bundled together to form a main line section 41. In detail, the main line section 41 is formed by integrating the multiple wires 40 with tape, heat shrink tubing, etc. The main line section 41 has a roughly cylindrical shape. The main line section 41 has a predetermined rigidity and is bendable.

[0032] Multiple electric wires 40 are connected to a connector 42 at the end opposite to the circuit board 21. The connector 42 is connected to an external ECU (Electronic Control Unit), etc. The ECU is a well-known configuration equipped with a microcomputer, components, etc., and has functions for detecting the voltage, current, temperature, etc. of each energy storage element 11, and for controlling the charging and discharging of each energy storage element 11.

[0033] (Protector 50) The protector 50 is made of an insulating synthetic resin. As shown in Figures 3 to 5, the protector 50 comprises a protector body 50A and a cover 50B that covers the protector body 50A from above. The cover 50B is integrally formed with the protector body 50A via a hinge portion 50C. The hinge portion 50C is configured to be elastically deformable. As shown in Figure 5, by elastically deforming the hinge portion 50C, the cover 50B can be assembled on top of the protector body 50A.

[0034] (Protector unit 50A) As shown in Figure 3, the protector body 50A is tray-shaped. The protector body 50A includes a busbar housing section 51 in which the busbars 30 are housed, a housing recess 52 in which a plurality of electric wires 40 are housed, and an intermediate wiring section 53 positioned between the busbar housing section 51 and the housing recess 52. The busbar housing section 51 is frame-shaped and arranged in a front-to-back direction.

[0035] As shown in Figure 4, the intermediate wiring section 53 contains a circuit board 21 and electric wires 40 connected to the circuit board 21. As shown in Figure 3, the intermediate wiring section 53 has a mounting surface 53A on which the circuit board 21 is placed, a columnar projection 53B protruding upward from the mounting surface 53A, and a projection receiving portion 53C recessed downward from the mounting surface 53A. The projection 53B is inserted into the insertion hole 22B of the circuit board 21. As a result, the circuit board body 22 is positioned in the intermediate wiring section 53.

[0036] The intermediate cable routing section 53 is provided with a partition wall 53D that rises upward from the mounting surface 53A. The partition wall 53D allows for the positioning of the electric wire 40. Preferably, the partition wall 53D is arranged around the protruding part receiving section 53C.

[0037] The intermediate cable routing section 53 has a locking receiver 53E that engages with the locking portion 58 of the cover 50B, which will be described later. The locking receiver 53E is located in the intermediate cable routing section 53 closer to the busbar housing section 51.

[0038] The receiving recess 52 is groove-shaped and extends in the front-to-back direction. The receiving recess 52, together with the cover 50B as described later, constitutes the wire housing section 62. The receiving recess 52 comprises a bottom wall 52A, a first side wall 52B rising upward from the left edge of the bottom wall 52A, and a second side wall 52C rising upward from the right edge of the bottom wall 52A. The first side wall 52B is connected to the cover 50B via a hinge section 50C. A notch (not shown) is formed in the second side wall 52C. The electric wire 40 is received from the intermediate wiring section 53 into the receiving recess 52 through this notch.

[0039] (First bent rib 54, second bent rib 55) The receiving recess 52 includes a first bent rib 54 extending to the right from the first side wall 52B (an example of the first wall portion) and a second bent rib 55 extending to the left from the second side wall 52C (an example of the second wall portion). The first bent rib 54 and the second bent rib 55 extend inward in the receiving recess 52 (wire receiving portion 62) in the left-right direction. The lower ends of the first bent rib 54 and the second bent rib 55 are connected to the bottom wall 52A. The first bent rib 54 is located in front of the second bent rib 55.

[0040] The first bending rib 54 and the second bending rib 55 are positioned near the end of the wire housing section 62 (in this case, the front end of the wire housing section 62) from which multiple wires 40 are led out. A section 56 for accommodating excess wires is provided in the protector body 50A at a position in front of the end of the wire housing section 62. The section 56 allows for the arrangement of excess wires 40 that are arranged between the main line section 41 and the connector 42, as well as the connector 42.

[0041] As shown in Figure 4, when the main wire section 41 is housed in the housing recess 52, the first bending rib 54 contacts the main wire section 41 from the left side, and the second bending rib 55 contacts the main wire section 41 from the right side. As a result, the main wire section 41 is bent in a roughly S-shape when viewed from above. Therefore, multiple electric wires 40 can be firmly held in the housing recess 52.

[0042] Since the wiring module 20 of this embodiment is used in a vehicle, it is conceivable that vibrations may be applied to the electric wires 40. Furthermore, multiple electric wires 40 are connected to a connector 42, and it is assumed that tensile stress will be applied to the multiple electric wires 40 when this connector 42 is connected to an external ECU or the like. As described above, in this embodiment, the main wire section 41 in the electric wire housing section 62 is bent by the first bending rib 54 and the second bending rib 55. Therefore, even if vibrations or tensile stresses are applied to multiple electric wires 40, it is difficult for vibrations or tensile stresses to be transmitted to the connection between the electric wires 40 and the circuit board 21. Thus, damage to the connection between the electric wires 40 and the circuit board 21 can be suppressed.

[0043] It is preferable that the distance D1 between the first bent rib 54 and the second bent rib 55 in the front-rear direction be set to a certain extent. For example, it is preferable that the distance D1 between the first bent rib 54 and the second bent rib 55 in the front-rear direction be set to be less than three times the distance D2 between the first side wall 52B and the second side wall 52C in the left-right direction. Alternatively, the distance D1 between the first bent rib 54 and the second bent rib 55 in the front-rear direction may be set to be less than three times the diameter D3 of the main line section 41. With such dimensional settings, the main line section 41 can be bent in a roughly S-shape over a narrow range in the front-rear direction, thereby increasing the restoring force that causes the main line section 41 to return to its bent state. As a result, the main line section 41 can be brought into strong contact with the first bent rib 54 and the second bent rib 55, and the friction between the main line section 41 and the first bent rib 54 and the second bent rib 55 can be increased.

[0044] It is preferable that the distance D4 (see Figure 7) between the first bending rib 54 and the second bending rib 55 in the left-right direction is set to be smaller than the diameter D3 (see Figure 4) of the main wire section 41. With such a dimensional setting, the main wire section 41 can be bent more significantly by the first bending rib 54 and the second bending rib 55. Therefore, it becomes easier to hold the main wire section 41 more firmly in the wire housing section 62.

[0045] (Lid body 50B) As shown in Figures 3 to 5, the cover 50B is configured to be able to close the housing recess 52 and intermediate cable routing section 53 of the protector body 50A from above. That is, the cover 50B may be superimposed on the protector body 50A in a direction perpendicular to the first direction. For example, the cover 50B may be superimposed on the protector body 50A in a direction perpendicular to the first direction and intersecting the second direction. As shown in Figure 3, the cover 50B comprises a plate-like portion 57 and a locking portion 58, a protruding portion 59, a convex portion 60, and a pressing rib 61 protruding from the plate-like portion 57. The locking portion 58 engages with the lock receiving portion 53E, thereby enabling the cover 50B to maintain a closed state over the protector body 50A.

[0046] The protruding portion 59 is, for example, block-shaped. With the cover 50B closing the protector body 50A, the protruding portion 59 is positioned vertically opposite the protruding portion receiving portion 53C, and the electric wire 40 is positioned between the protruding portion 59 and the protruding portion receiving portion 53C. The distance between the protruding portion 59 and the protruding portion receiving portion 53C is approximately the same as the diameter of the electric wire 40. This makes it easier for friction to occur between the electric wire 40 and the protruding portion 59 or the protruding portion receiving portion 53C when vibration or stress is applied to the electric wire 40. Therefore, vibration and stress are less likely to be transmitted to the connection between the electric wire 40 and the circuit board 21, and damage to the connection between the electric wire 40 and the circuit board 21 can be suppressed.

[0047] The protrusion 60 is, for example, block-shaped. With the cover 50B closing the protector body 50A, the protrusion 60 is positioned facing the mounting surface 53A, and the electric wire 40 is positioned between the protrusion 60 and the mounting surface 53A. The distance between the protrusion 60 and the mounting surface 53A is approximately the same as the diameter of the electric wire 40. This makes it easier for friction to occur between the electric wire 40 and the protrusion 60 or the mounting surface 53A when vibration or stress is applied to the electric wire 40. Therefore, vibration and stress are less likely to be transmitted to the connection between the electric wire 40 and the circuit board 21, and damage to the connection between the electric wire 40 and the circuit board 21 can be suppressed.

[0048] (Pressing rib 61, wire housing section 62, peripheral wall 63) The portion of the plate-like part 57 closest to the hinge part 50C forms a ceiling wall 57A that closes the housing recess 52. The lid 50B, when the lid 50B is closing the protector body 50A, is provided with a pressing rib 61 that extends inward from the ceiling wall 57A into the housing recess 52 (see Figure 6). The pressing rib 61 is positioned between the first bending rib 54 and the second bending rib 55 in the front-rear direction. The wire housing section 62 of this embodiment is composed of the housing recess 52 of the protector body 50A, the ceiling wall 57A and pressing rib 61 of the lid 50B. The peripheral wall 63 surrounding the main line section 41 in the wire housing section 62 is composed of a bottom wall 52A, a first side wall 52B, a second side wall 52C, and a ceiling wall 57A.

[0049] As shown in Figure 6, with the cover 50B closing the protector body 50A, the pressing rib 61 and the bottom wall 52A are configured to clamp the main wire section 41 in the vertical direction. The pressing rib 61 can hold the main wire section 41 even more firmly in the wire housing section 62, so that even if vibration or stress is applied to multiple wires 40, the transmission of vibration or stress to the connection between the wires 40 and the circuit board 21 can be suppressed. Therefore, damage to the connection between the wires 40 and the circuit board 21 can be suppressed.

[0050] (Recess 61A) The pressing rib 61 has a recess 61A that is recessed toward the ceiling wall 57A from its protruding end. The recess 61A is formed in an arc shape when viewed from the front-rear direction. By forming the recess 61A in the pressing rib 61, the contact area between the main line section 41 and the pressing rib 61 can be increased. Therefore, the main line section 41 can be held more firmly in the wire housing section 62. In addition, the recess 61A allows the main line section 41 to be positioned in the left-right direction.

[0051] (Projected area 64) As shown in Figure 7, when the wire housing section 62 is viewed from the front-to-back direction, the internal space of the wire housing section 62 includes a continuous space (shaded area in Figure 7) that extends in the front-to-back direction without being obstructed by the first bending rib 54, the second bending rib 55, and the pressing rib 61. The area of ​​this continuous space when viewed from the front-to-back direction is defined as the projected area 64 of the internal space of the wire housing section 62 when viewed from the front-to-back direction, and will be simply referred to as the projected area 64 below. In this embodiment, the projected area 64 is set to be smaller than the cross-sectional area 41A of the main wire section 41 (see Figure 6). For example, the projected area 64 may be 70% or less of the cross-sectional area 41A of the main wire section 41. With such a configuration, the continuous space becomes smaller, making it easier for the main wire section 41 to come into contact with the first bending rib 54, the second bending rib 55, and the pressing rib 61. Therefore, the main wire section 41 can be held more firmly in the wire housing section 62.

[0052] (Effects of Embodiment 1) (1-1) The wiring module 20 according to Embodiment 1 is a wiring module 20 attached to a plurality of energy storage elements 11, comprising a plurality of electric wires 40, a plurality of circuit boards 21, and a protector 50 that holds the plurality of circuit boards 21 and the plurality of electric wires 40, wherein each electric wire 40 is electrically connected to each circuit board 21, and the protector 50 comprises an electric wire housing section 62 that extends in a first direction (front-rear direction) and accommodates the plurality of electric wires 40, and the electric wire housing section 6 2 comprises a circumferential wall 63 arranged to surround a plurality of electric wires 40, and a first bent rib 54 and a second bent rib 55 extending inward from the circumferential wall 63 into the electric wire housing 62. The first bent rib 54 is positioned offset from the second bent rib 55 in the first direction, the first bent rib 54 extends from the circumferential wall 63 to one side in the second direction (left-right direction) perpendicular to the first direction, and the second bent rib 55 extends from the circumferential wall 63 to the other side in the second direction.

[0053] With this configuration, the first bending rib 54 and the second bending rib 55 can contact the multiple electric wires 40 from opposite sides in the second direction, so that the multiple electric wires 40 can be held in the electric wire housing 62 in a bent state by the first bending rib 54 and the second bending rib 55. As a result, the portions of the multiple electric wires 40 that are bent by the first bending rib 54 and the second bending rib 55 are less likely to move in the first direction relative to the protector 50 inside the electric wire housing 62. Therefore, when vibration or stress is applied to the multiple electric wires 40, it is possible to suppress the generation of stress at the connection point between the electric wires 40 and the circuit board 21, and thus damage to the connection point between the electric wires 40 and the circuit board 21 can be suppressed.

[0054] (1-2) In Embodiment 1, the wire housing section 62 further includes a pressing rib 61 extending inward from the peripheral wall 63 to the wire housing section 62, the pressing rib 61 being positioned between the first bending rib 54 and the second bending rib 55 in the first direction, and the multiple wires 40 being held between the peripheral wall 63 and the pressing rib 61 in a third direction (up and down direction) that is perpendicular to the first direction and intersects with the second direction.

[0055] With this configuration, multiple electric wires 40 can be held between the peripheral wall 63 and the pressing rib 61, making it easier to more firmly hold the multiple electric wires 40 around the first bending rib 54 and the second bending rib 55 by the electric wire housing section 62.

[0056] (1-3) In Embodiment 1, the pressing rib 61 has a recess 61A that is arc-shaped when viewed from a first direction.

[0057] This configuration makes it easier to increase the contact area between the pressing rib 61 and the multiple electric wires 40. Therefore, the frictional force between the pressing rib 61 and the electric wires 40 can be increased, and thus the movement of the electric wires 40 in the first direction relative to the electric wire housing 62 near the pressing rib 61 can be further suppressed.

[0058] (1-4) In Embodiment 1, multiple electric wires 40 are bundled together to form a main line section 41, and the projected area 64 of the internal space of the electric wire housing section 62 in a first-direction view is set to be smaller than the cross-sectional area 41A of the main line section 41.

[0059] With this configuration, the main wire section 41 is more likely to come into contact with the first bending rib 54 and the second bending rib 55. Therefore, the portions of the multiple electric wires 40 that are bent by the first bending rib 54 and the second bending rib 55 become even less likely to move in the first direction relative to the protector 50 inside the electric wire housing section 62. Thus, damage to the connection between the electric wires 40 and the circuit board 21 can be further suppressed.

[0060] (1-5) In Embodiment 1, the peripheral wall 63 comprises a first wall portion (first side wall 52B) from which the first bending rib 54 extends, and a second wall portion (second side wall 52C) from which the second bending rib 55 extends. The second wall portion faces the first wall portion in a second direction, and the distance D1 between the first bending rib 54 and the second bending rib 55 in the first direction is set to be less than three times the distance D2 between the first wall portion and the second wall portion in the second direction.

[0061] This configuration increases the frictional force between each of the first bending rib 54 and the second bending rib 55 and the multiple electric wires 40. Therefore, the portions of the multiple electric wires 40 that are bent by the first bending rib 54 and the second bending rib 55 become even more difficult to move in the first direction relative to the protector 50, thus further suppressing damage to the connection between the electric wires 40 and the circuit board 21.

[0062] (1-6) In Embodiment 1, the protector 50 comprises a protector body 50A and a cover 50B that is superimposed on the protector body 50A in a direction perpendicular to the first direction, and the wire housing section 62 is composed of the protector body 50A and the cover 50B.

[0063] With this configuration, the wire housing section 62 can be easily constructed.

[0064] <Embodiment 2> Embodiment 2 of this disclosure will be described with reference to Figures 8 to 12. The wiring module 120 according to Embodiment 2 is configured substantially the same as that of Embodiment 1, except for the configuration of the first bending rib 154 and the second bending rib 155. In Embodiment 2, the front-rear direction is an example of the first direction, and the up-down direction is an example of the second direction. Hereinafter, the same reference numerals are used for the same components as in Embodiment 1, and detailed descriptions of the same configurations and effects as in Embodiment 1 will be omitted.

[0065] As shown in Figures 8 and 9, the wiring module 120 of this embodiment includes a protector 150, which comprises a protector body 150A and a cover 150B. The protector 150 includes a wire housing section 162 for housing a plurality of electric wires 40. As shown in Figure 11, the wire housing section 162 is composed of a housing recess 152 in the protector body 150A and the ceiling wall 57A and second bent rib 155 of the cover 150B.

[0066] (First curved rib 154) The receiving recess 152 comprises two first bent ribs 154 extending upward from the bottom wall 52A. The left end of the first bent rib 154 is connected to the first side wall 52B, and the right end of the first bent rib 154 is connected to the second side wall 52C. The two first bent ribs 154 are spaced apart in the front-rear direction.

[0067] (Recess 154A) The first bent rib 154 has a recess 154A that is recessed from the protruding end toward the bottom wall 52A. The recess 154A is formed in an arc shape when viewed from the front-rear direction. By forming the recess 154A in the first bent rib 154, the contact area between the main wire section 41 and the first bent rib 154 can be increased. Therefore, the main wire section 41 can be held more firmly in the wire housing section 162. In addition, the recess 154A allows the main wire section 41 to be positioned in the left-right direction.

[0068] (Second bending rib 155) The cover 150B is equipped with a second bent rib 155 extending from the ceiling wall 57A. When the cover 150B is closed over the protector body 150A, the second bent rib 155 extends toward the bottom wall 52A (downward). The second bent rib 155 is positioned between two first bent ribs 154 in the front-rear direction.

[0069] (Recess 155A) The second bent rib 155 has a recess 155A that is recessed toward the ceiling wall 57A from the protruding end. The recess 155A is formed in an arc shape when viewed from the front-rear direction. By forming the recess 155A in the second bent rib 155, the contact area between the main wire section 41 and the second bent rib 155 can be increased. Therefore, the main wire section 41 can be held more firmly in the wire housing section 162. In addition, the recess 155A allows the main wire section 41 to be positioned in the left-right direction.

[0070] As shown in Figure 10, when the main wire section 41 is housed in the wire housing section 162, the first bending rib 154 contacts the main wire section 41 from below, and the second bending rib 155 contacts the main wire section 41 from above. As a result, the main wire section 41 is bent in a roughly S-shape when viewed from the left and right directions. Therefore, multiple electric wires 40 can be firmly held in the wire housing section 162.

[0071] (Projected area 164) As shown in Figure 12, when the wire housing section 162 is viewed from the front and rear directions, the internal space of the wire housing section 162 includes a continuous space extending in the front and rear directions without being obstructed by the first bending rib 154 and the second bending rib 155. Of this continuous space, the elliptical space in front view (shaded area in the figure) located inside the recesses 154A and 155A is designated as an entry space into which the main wire section 41 can enter. The area of ​​this entry space when viewed from the front and rear directions is defined as the projected area 164. In this embodiment, the projected area 164 is set to be smaller than the cross-sectional area 41A of the main wire section 41. With this configuration, the smaller entry space makes it easier for the main wire section 41 to come into contact with the first bending rib 154 and the second bending rib 155. Therefore, the main wire section 41 can be held more firmly in the wire housing section 162.

[0072] (Effects of Embodiment 2) (2-1) In Embodiment 2, the first bent rib 154 and the second bent rib 155 each have recesses 154A and 155A that form an arc shape when viewed in a first direction.

[0073] This configuration makes it easier to increase the contact area between the first bending rib 154 and the second bending rib 155 and the multiple electric wires 40. Therefore, the frictional force between the first bending rib 154 and the second bending rib 155 and the electric wires 40 can be increased, thereby further suppressing the movement of the electric wires 40 in the first direction relative to the electric wire housing 162 in the vicinity of the first bending rib 154 and the second bending rib 155.

[0074] <Embodiment 3> Embodiment 3 of this disclosure will be described with reference to Figures 13 to 17. The wiring module 220 according to Embodiment 3 is configured substantially the same as that of Embodiment 1, except for the configuration of the front rib 265, the rear rib 266, and the intermediate rib 267. In Embodiment 2, the front-rear direction is an example of the first direction. Hereinafter, the same reference numerals are used for the same components as in Embodiment 1, and detailed explanations of the same configurations and effects as in Embodiment 1 will be omitted.

[0075] As shown in Figures 13 and 14, the wiring module 220 of this embodiment includes a protector 250, which comprises a protector body 250A and a cover 250B. The protector 250 includes a wire housing section 262 for housing a plurality of electric wires 40. As shown in Figure 16, the wire housing section 262 is composed of a housing recess 252 in the protector body 250A and the ceiling wall 57A and intermediate rib 267 of the cover 250B.

[0076] (Front rib 265, rear rib 266) The receiving recess 252 comprises a front rib 265 and a rear rib 266 located behind the front rib 265. The front rib 265 extends upward from the bottom wall 52A and to the right from the first side wall 52B. The right end of the front rib 265 is connected to the second side wall 52C. The rear rib 266 extends upward from the bottom wall 52A and to the left from the second side wall 52C. The left end of the rear rib 266 is connected to the first side wall 52B.

[0077] (Recess 265A) A recess 265A is formed on the right side of the front rib 265, extending inward from the protruding end towards the bottom wall 52A. The recess 265A is formed in an arc shape when viewed from the front-rear direction. By forming the recess 265A on the front rib 265, the contact area between the main wire section 41 and the front rib 265 can be increased. Therefore, the main wire section 41 can be held more firmly in the wire housing section 262. In addition, the recess 265A allows the main wire section 41 to be positioned in the left-right direction.

[0078] (Recess 266A) A recess 266A is formed on the left side of the rear rib 266, recessing from the protruding end toward the bottom wall 52A. The recess 266A is formed in an arc shape when viewed from the front-rear direction. By forming the recess 266A on the rear rib 266, the contact area between the main wire section 41 and the rear rib 266 can be increased. Therefore, the main wire section 41 can be held more firmly in the wire housing section 262. In addition, the recess 266A allows the main wire section 41 to be positioned in the left-right direction.

[0079] (Intermediate rib 267) The cover 250B is equipped with an intermediate rib 267 extending from the ceiling wall 57A. When the cover 250B is closed over the protector body 250A, the intermediate rib 267 extends toward the bottom wall 52A (downward). The intermediate rib 267 is positioned between the front rib 265 and the rear rib 266 in the front-rear direction.

[0080] (Recess 267A) The intermediate rib 267 has a recess 267A that is recessed from the protruding end toward the ceiling wall 57A. The recess 267A is formed in an arc shape when viewed from the front-rear direction. By forming the recess 267A in the intermediate rib 267, the contact area between the main line section 41 and the intermediate rib 267 can be increased. Therefore, the main line section 41 can be held more firmly in the wire housing section 262. In addition, the recess 267A allows the main line section 41 to be positioned in the left-right direction.

[0081] When the main line section 41 is housed in the wire housing section 262, as shown in Figure 13, the front rib 265 contacts the main line section 41 from the left side, and the rear rib 266 contacts the main line section 41 from the right side. As a result, the main line section 41 is bent in a roughly S-shape in plan view. That is, the front rib 265 can be considered an example of a first bending rib, the rear rib 266 an example of a second bending rib, and the left-right direction can be considered an example of a second direction. Furthermore, the intermediate rib 267 is positioned between the front rib 265 and the rear rib 266 in the front-rear direction and, together with the bottom wall 52A, clamps the main line section 41 in the vertical direction. Therefore, the intermediate rib 267 can be considered an example of a pressing rib, and the vertical direction can be considered an example of a third direction.

[0082] Furthermore, as shown in Figure 15, the front rib 265 and rear rib 266 contact the main line section 41 from below, and the intermediate rib 267 contacts the main line section 41 from above. As a result, the main line section 41 is bent in a roughly S-shape when viewed from the left and right directions. In other words, the front rib 265 and rear rib 266 can be considered as examples of first bending ribs, the intermediate rib 267 as an example of a second bending rib, and the vertical direction as an example of the second direction.

[0083] As described above, in this embodiment, the main line section 41 bends in both plan and side views while contacting the front rib 265, the rear rib 266, and the intermediate rib 267, so that multiple electric wires 40 can be firmly held in the electric wire housing section 262.

[0084] (Projected area 264) As shown in Figure 17, when the wire housing section 262 is viewed from the front and rear directions, the internal space of the wire housing section 262 includes a continuous space (shaded area in the figure) that extends in the front and rear directions without being obstructed by the front rib 265, the rear rib 266, and the intermediate rib 267. The area of ​​this continuous space when viewed from the front and rear directions is called the projected area 264. In this embodiment, the projected area 264 is set to be smaller than the cross-sectional area 41A of the main wire section 41. With this configuration, the main wire section 41 is more likely to come into contact with the front rib 265, the rear rib 266, and the intermediate rib 267 because the continuous space is smaller. Therefore, the main wire section 41 can be held more firmly in the wire housing section 262.

[0085] The effects of Embodiment 3 are the same as those of Embodiment 1 or Embodiment 2, so their explanation will be omitted.

[0086] (Other embodiments) Embodiments 1 to 3 described above can be implemented with the following modifications. Embodiments 1 to 3 described above and the following modifications can be combined with each other to the extent that they do not contradict each other technically.

[0087] In embodiments 1 to 3 described above, the peripheral wall 63 comprised a bottom wall 52A, a first side wall 52B, a second side wall 52C, and a top wall 57A, and was shaped like a rectangular tube. However, the peripheral wall may be cylindrical, for example. Also, in embodiments 1 to 3 described above, the peripheral wall 63 was arranged to cover the entire outer circumference of the multiple electric wires 40. However, the peripheral wall only needs to cover at least a portion of the outer circumference of the multiple electric wires. For example, the peripheral wall may not have a top wall and may consist of a bottom wall, a first side wall, and a second side wall.

[0088] In embodiments 1 to 3 described above, the multiple electric wires 40 were bundled together to form a main line section 41, but the multiple electric wires do not necessarily have to form a main line section.

[0089] In embodiments 1 to 3 described above, the wire housing sections 62, 162, and 262 were each composed of a protector body 50A, 150A, and 250A and a cover 50B, 150B, and 250B, respectively, but the wire housing section may be composed of a single component.

[0090] In embodiments 1 to 3 described above, the circuit board 21 was a flexible substrate, but the circuit board may also be a rigid substrate. [Explanation of Symbols]

[0091] 10: Energy storage module 11: Energy storage element 12: Electrode terminal 15: Small metal piece 20: Wiring module 21: Circuit board 22: Main board 22A: Electric Wire Land 22B: Through hole 23: Extension part 23A: Connection Land 30: Bus bar 40: Electric wire 41: Main Line Section 41A: Cross-sectional area of ​​main line section 41 42: Connector 50: Protector 50A: Protector body 50B: Lid body 50C: Hinge section 51: Bus bar bay 52: Recessed area 52A: Bottom wall 52B: First side wall 52C: 2nd side wall 53: Intermediate cable routing section 53A: Mounting surface 53B: Protrusion 53C: Protruding part receiving part 53D: Partition wall 53E: Locking mechanism 54: First curved rib 55: Second curved rib 56: Excess length section 57: Plate-like part 57A: Ceiling and Wall 58: Rock Club 59: Protrusion 60: Convex part 61: Compression Rib 61A: Recess 62: Wire housing section 63: Surrounding wall 64: Projected area 120: Wiring Module 150: Protector 150A: Protector body 150B: Lid body 152: Recessed area 154: First curved rib 154A: Recess 155: Second curved rib 155A: Recess 162: Wire housing section 164: Projected area 220: Wiring module 250: Protector 250A: Protector body 250B: Lid body 252: Recessed area 262: Wire housing section 264: Projected area 265: Front rib 265A: Recess 266: Rear rib 266A: Recess 267: Intermediate rib 267A: Recess D1: Distance between the first bending rib 54 and the second bending rib 55 in the front-rear direction. D2: Distance between the first side wall 52B and the second side wall 52C in the left-right direction. D3: Diameter of main line section 41 D4: Distance between the first bending rib 54 and the second bending rib 55 in the left-right direction.

Claims

1. A wiring module that can be attached to multiple energy storage elements, Multiple power lines, Multiple circuit boards, The system comprises a protector that holds the plurality of circuit boards and the plurality of wires, Each of the aforementioned wires is electrically connected to each of the aforementioned circuit boards. The protector includes a wire housing section that extends in a first direction and accommodates the plurality of wires, The wire housing comprises a peripheral wall arranged to surround the plurality of wires, and a first and second bending rib extending inward from the peripheral wall to the wire housing. The first bent rib is positioned offset from the second bent rib in the first direction, The first bent rib extends from the peripheral wall to one side in a second direction perpendicular to the first direction, The second curved rib extends from the circumferential wall to the other side in the second direction, When the plurality of electric wires are housed in the electric wire housing, they are bent in an S-shape due to the pressure exerted by the first bending rib and the second bending rib. A wiring module in which the multiple wires, in a bent state, are pressed against the first bending rib and come into contact with the peripheral wall on the side where the second bending rib is provided, and are pressed against the second bending rib and come into contact with the peripheral wall on the side where the first bending rib is provided.

2. A wiring module that can be attached to a plurality of energy storage elements, Multiple power lines, Multiple circuit boards, The system comprises a protector that holds the plurality of circuit boards and the plurality of wires, Each of the aforementioned wires is electrically connected to each of the aforementioned circuit boards. The protector includes a wire housing section that extends in a first direction and accommodates the plurality of wires, The wire housing comprises a peripheral wall arranged to surround the plurality of wires, and a first and second bending rib extending inward from the peripheral wall to the wire housing. The first bent rib is positioned offset from the second bent rib in the first direction, The first bent rib extends from the peripheral wall to one side in a second direction perpendicular to the first direction, The second curved rib extends from the circumferential wall to the other side in the second direction, The wire housing portion further comprises pressing ribs extending inward from the peripheral wall of the wire housing portion. The pressing rib is positioned between the first bending rib and the second bending rib in the first direction, A wiring module in which the plurality of electric wires are held between the peripheral wall and the pressing rib in a third direction that is perpendicular to the first direction and intersects with the second direction.

3. The wiring module according to claim 2, wherein the pressing rib has a recess that is arc-shaped in the first viewing direction.

4. A wiring module that can be attached to a plurality of energy storage elements, Multiple power lines, Multiple circuit boards, The system comprises a protector that holds the plurality of circuit boards and the plurality of wires, Each of the aforementioned wires is electrically connected to each of the aforementioned circuit boards. The protector includes a wire housing section that extends in a first direction and accommodates the plurality of wires, The wire housing comprises a peripheral wall arranged to surround the plurality of wires, and a first and second bending rib extending inward from the peripheral wall to the wire housing. The first bent rib is positioned offset from the second bent rib in the first direction, The first bent rib extends from the peripheral wall to one side in a second direction perpendicular to the first direction, The second curved rib extends from the circumferential wall to the other side in the second direction, A wiring module in which the first and second bent ribs each have a recess that forms an arc shape when viewed in a first direction.

5. The aforementioned multiple electric wires are bundled together to form a main line section. The wiring module according to claim 1 or claim 2, wherein the projected area of ​​the internal space of the wire housing section in the first viewing direction is set to be smaller than the cross-sectional area of ​​the main line section.

6. The peripheral wall comprises a first wall portion from which the first bending rib extends, and a second wall portion from which the second bending rib extends. The second wall portion faces the first wall portion in the second direction, The wiring module according to claim 1 or claim 2, wherein the distance between the first bending rib and the second bending rib in the first direction is set to be less than three times the distance between the first wall portion and the second wall portion in the second direction.

7. The protector comprises a protector body and a cover that is superimposed on the protector body in a direction perpendicular to the first direction. The wiring module according to claim 1 or claim 2, wherein the wire housing portion is composed of the protector body and the cover.

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