Battery wiring module

Abstract

One aspect of the present invention provides a battery wiring module capable of stably holding a wire harness. The electric wire housing part (31) of the housing (22) has an electric wire leading-out part (32), and the electric wire leading-out part (32) leads the electric wire bundle (W) to the outside of the electric wire housing part (31). The wire harness (W) has a bent portion (Wa). The electric wire leading-out part (32) is provided with an abutting part (41) which abuts against the bent part (Wa) and a clamping and fixing part (51) which clamps and fixes the bent part (Wa) to the abutting part (41). The abutting portion (41) has a shape that coincides with the shape of the curved portion (Wa).

Description

Technical Field

[0001] The invention relates to a battery wiring module. Background Art

[0002] For example, as disclosed in Patent Document 1, in vehicles such as electric vehicles and hybrid vehicles, a battery wiring module is installed on a high-voltage battery mounted as a power source for driving the vehicle. The battery wiring module includes: a plurality of wires electrically connected to the battery; and a housing having a wire storage portion for storing the plurality of wires. The wire storage portion has a wire lead-out portion, and the wire lead-out portion leads a wire bundle formed by bundling a plurality of wires to the outside of the wire storage portion. In the wire lead-out portion, the wire bundle is sometimes tightened and fixed by a tightening band or the like. In this case, the wire lead-out portion has an abutment portion, and the wire bundle is pressed to the abutment portion by the tightening band or the like. Prior art literature Patent Literature

[0003] Patent Document 1: Japanese Patent Application Publication No. 2021-190156 Summary of the invention Problems to be solved by the invention

[0004] When the wire harness is bent in the wire lead-out portion, a gap may be formed between the wire harness and the contact portion of the wire lead-out portion. If a gap is formed between the wire harness and the contact portion, the play of the wire harness increases, and the stability of fixing the wire harness by the clamping fixing portion decreases.

[0005] An object of the present invention is to provide a battery wiring module capable of stably holding an electric wire harness. Solutions to Solve Problems

[0006] The battery wiring module of the present invention can be installed on a battery, and the battery wiring module comprises: a plurality of wires electrically connected to the battery; and a shell having a wire storage portion for storing the plurality of wires, wherein the wire storage portion has a wire lead-out portion, and the wire lead-out portion leads a wire bundle formed by bundling the plurality of wires to the outside of the wire storage portion, and the wire bundle has a bent portion, and the wire lead-out portion has an abutting portion abutting the bent portion and a clamping and fixing portion clamping and fixing the bent portion to the abutting portion, and the abutting portion has a shape consistent with the shape of the bent portion. Effects of the Invention

[0007] The battery wiring module of the present invention exerts an effect of stably holding the electric wire harness. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic plan view of a battery wiring module according to the embodiment. Figure 2It is a plan view showing a part of the casing of the battery wiring module according to the present embodiment. Figure 3 It is a perspective view showing a part of the casing of the battery wiring module according to the embodiment. Figure 4 It is a plan view showing a part of a casing of a battery wiring module according to a modification. DETAILED DESCRIPTION

[0009] [Description of Embodiments of the Invention] First, embodiments of the present invention will be described by way of examples. The battery wiring module of the present invention, [1] A battery wiring module capable of being installed on a battery comprises: a plurality of wires electrically connected to the battery; and a housing having a wire storage portion for storing the plurality of wires, wherein the wire storage portion has a wire lead-out portion for leading out a wire bundle formed by bundling the plurality of wires to the outside of the wire storage portion, the wire bundle having a bent portion, the wire lead-out portion having an abutting portion abutting the bent portion and a clamping and fixing portion clamping and fixing the bent portion to the abutting portion, the abutting portion having a shape consistent with the shape of the bent portion.

[0010] According to this structure, the bent portion of the wire harness is pressed against the abutment portion by the clamping fixing portion, and the abutment portion has a shape consistent with the shape of the bent portion. As a result, the formation of a gap between the abutment portion and the bent portion can be suppressed. Therefore, the play of the bent portion of the wire harness is reduced, and as a result, the wire harness can be stably held by the abutment portion and the clamping fixing portion.

[0011] [2] In the above [1], the contact portion may include a first rib and a second rib arranged along the direction in which the wire harness extends, and the bent portion may contact the tip of the first rib and the tip of the second rib, respectively.

[0012] According to this structure, the bent portion of the wire harness is pressed against the tip of each of the first rib and the second rib by the tightening and fixing portion. Therefore, the bent portion can be stably held at at least two points by the tip of each of the first rib and the second rib.

[0013] [3] In the above-mentioned [2], the tightening and fixing portion may be located between the first rib and the second rib. According to this configuration, the tightening force of the tightening and fixing portion applied to the bent portion of the wire harness can be evenly distributed to each of the first rib and the second rib.

[0014] [4] In the above [2] or [3], the length from the base end portion to the tip end portion of each of the first rib and the second rib may be set to a length that matches the shape of the curved portion.

[0015] According to this configuration, the distal end portions of the first rib and the second rib can be brought into contact with the bent portion of the wire harness. [5] In the above [4], the length of the first rib and the length of the second rib may be set to different lengths.

[0016] According to this configuration, the distal end portions of the first rib and the second rib can be brought into contact with the bent portion of the wire harness. [6] In the above [5], the first rib may be provided on the outer side of the shell relative to the second rib, and the length of the second rib may be longer than the length of the first rib.

[0017] According to this configuration, the tip end portion of each of the first rib and the second rib can be appropriately brought into contact with the bent portion of the wire harness. [Details of Embodiments of the Invention] A specific example of the battery wiring module of the present invention is described below with reference to the accompanying drawings. In each of the drawings, for the sake of convenience, a part of the structure may be enlarged or simplified. In addition, the dimensional ratios of each part may be different in each of the drawings.

[0018] like Figure 1 As shown, the battery wiring module 10 of this embodiment is installed in a battery 11 mounted on an electric vehicle, a hybrid vehicle, etc., for example. The battery 11 is, for example, a secondary battery. The battery 11 supplies power to a driving motor of the vehicle (not shown). In addition, the battery 11 receives power supply from the driving motor or the power generation motor according to the charging state or the operating state of the vehicle.

[0019] The battery 11 includes a plurality of battery cells 12. The battery 11 is formed into, for example, a substantially rectangular parallelepiped shape by arranging the plurality of battery cells 12 in one direction. In the following description, the direction in which the battery cells 12 are arranged is referred to as the X direction, and the direction orthogonal to the X direction is referred to as the Y direction. In addition, the Z direction orthogonal to the X direction and the Y direction is referred to as the up-down direction, and the side on which the battery wiring module 10 is mounted with respect to the battery 11 is referred to as the top. That is, the battery 11 has a module mounting surface 13 on the side surface on the top side on which the battery wiring module 10 is mounted.

[0020] Each battery cell 12 has two battery terminals 14. One of the two battery terminals 14 is a positive terminal, and the other is a negative terminal. When each battery cell 12 is arranged in the X direction, the two battery terminals 14 are arranged in the Y direction on the upper surface of the battery cell 12.

[0021] (Structure of Battery Wiring Module 10) The battery wiring module 10 includes a plurality of electric wires 21 electrically connected to the battery 11 and a housing 22 for accommodating each of the electric wires 21. In addition, the battery wiring module 10 includes, for example, a plurality of bus bars 23 supported by the housing 22. For example, a plurality of bus bars 23 are arranged along the X direction on both sides of the housing 22 in the Y direction. Each bus bar 23 connects the battery terminals 14 adjacent to each other in the X direction. The bus bar 23 is connected to the battery terminal 14 by welding, for example. Each bus bar 23 is electrically connected to a corresponding electric wire 21. For example, each electric wire 21 is a voltage detection wire for detecting the voltage of each bus bar 23. Each electric wire 21 is connected to a connector 24, and the connector 24 is used to connect to a voltage detection device not shown. In addition, the battery wiring module 10 includes a cover 25, and the cover 25 covers the top of the housing 22.

[0022] (Structure of Housing 22) The housing 22 is formed of an insulator such as synthetic resin. The housing 22 includes a wire storage portion 31 for storing the wires 21. The wire storage portion 31 extends along the X direction. In addition, a pair of wire storage portions 31 are provided in a manner arranged in the Y direction. The pair of wire storage portions 31 merge at one end side in the X direction, and a wire lead-out portion 32 is provided at the merged portion. That is, the wire storage portion 31 has a wire lead-out portion 32 at the end in the longitudinal direction of the wire storage portion 31. The wire lead-out portion 32 is formed at one end of the housing 22 in the X direction. A plurality of wires 21 are collectively led out from the wire lead-out portion 32 to the outside of the housing 22.

[0023] The housing 22 has a bus bar holding portion 33 for holding the bus bar 23. A plurality of bus bar holding portions 33 are arranged in the X direction. The bus bar holding portions 33 extend outward in the Y direction from the pair of wire storage portions 31. Two rows of bus bar holding portions 33 arranged in the X direction are provided corresponding to the pair of wire storage portions 31. In addition, in the present embodiment, one bus bar 23 is held by two bus bar holding portions 33 adjacent to each other in the X direction.

[0024] One end of each wire 21 is led out from the wire storage portion 31 to the bus bar holding portion 33 and connected to the corresponding bus bar 23. The other end of each wire 21 is collectively led out of the housing 22 from the wire leading portion 32 and connected to the connector 24.

[0025] (Structure of Bend Section Wa of Wire Harness W) like Figure 2 and Figure 3 As shown, the plurality of electric wires 21 are bundled together by, for example, an adhesive tape (not shown) wrapped around the outer circumference at the portion passing through the inner portion of the electric wire lead-out portion 32 to form an electric wire bundle W (see Figure 2). The wire bundle W has a bent portion Wa inside the wire lead-out portion 32. The bent portion Wa is bent along a plane perpendicular to the Z direction, that is, along the XY plane.

[0026] like Figure 3 As shown, the housing 22 has a protective wall 34 at the end portion on the side where the wire lead-out portion 32 is provided in the X direction. The protective wall 34 is provided in the center portion in the Y direction. The protective wall 34 surrounds, for example, components (not shown) mounted on the battery 11.

[0027] The wire lead-out portion 32 is arranged in parallel with the protective wall portion 34 in the Y direction. In the housing 22 of the present embodiment, since the protective wall portion 34 is located in the center portion in the Y direction, the wire lead-out portion 32 is provided at a position offset in the Y direction relative to the wire storage portion 31. Therefore, in the wire lead-out portion 32, the wire bundle W cannot be led out in a straight line along the X direction. That is, the wire bundle W is bent in a manner avoiding the protective wall portion 34.

[0028] The bent portion Wa of the wire harness W is a portion bent just before the wire lead-out portion 32 is extended to the outside of the housing 22. The wire harness W is bent at the bent portion Wa and is led out along the X direction at the portion extending from the wire lead-out portion 32 to the outside of the housing 22.

[0029] (Structure of the Electric Wire Leading-Out Portion 32) like Figure 2 As shown, the wire lead-out portion 32 has a contact portion 41 and a clamping and fixing portion 51. The contact portion 41 contacts the outer peripheral surface of the curved portion Wa. The clamping and fixing portion 51 fixes the curved portion Wa in a manner of clamping the contact portion 41. The clamping and fixing portion 51 is, for example, a clamping band. The clamping and fixing portion 51 is, for example, formed as a separate body from the housing 22.

[0030] (Structure of the contact portion 41) like Figure 2 and Figure 3 As shown, the contact portion 41 is formed in a shape consistent with the shape of the curved portion Wa. The contact portion 41, for example, contacts the outer side of the bend of the curved portion Wa. In addition, the outer side of the bend of the curved portion Wa is the convex side of the curved portion Wa when viewed from the Z direction. The contact portion 41 has a base 42, a first rib 43, and a second rib 44. The first rib 43 and the second rib 44 protrude from the base 42 toward the inner side of the wire lead-out portion 32.

[0031] The first rib 43 and the second rib 44 are arranged in a row along the direction in which the wire harness W extends. The first rib 43 and the second rib 44 are, for example, ribs extending in parallel with each other. The first rib 43 is provided on the outer side of the housing 22 relative to the second rib 44. The first rib 43 is provided, for example, at a position that coincides with the outer side surface 32a of the wire lead-out portion 32 in the X direction. The second rib 44 is located on the inner side of the wire lead-out portion 32 relative to the first rib 43.

[0032] like Figure 2 As shown, the first rib 43 has a base end portion 43a and a tip end portion 43b. The base end portion 43a of the first rib 43 is connected to the base portion 42. In addition, the second rib 44 has a base end portion 44a and a tip end portion 44b. The base end portion 44a of the second rib 44 is connected to the base portion 42.

[0033] In the first rib 43, the length from the base end portion 43a to the top end portion 43b is set to a length L1. In addition, in the second rib 44, the length from the base end portion 44a to the top end portion 44b is set to a length L2. The length L1 of the first rib 43 and the length L2 of the second rib 44 are set to different lengths in a manner consistent with the shape of the curved portion Wa of the wire harness W. In the present embodiment, the length L2 of the second rib 44 is set to be longer than the length L1 of the first rib 43 in a manner consistent with the shape of the curved portion Wa. As a result, the top ends 43b and 44b of the first rib 43 and the second rib 44 are respectively in contact with the outer peripheral surface of the curved portion Wa.

[0034] like Figure 2 and Figure 3 As shown, the first rib 43 includes a first portion 45 protruding from the base 42 in the Y direction and a second portion 46 protruding in the Z direction. In addition, the second rib 44 includes a third portion 47 protruding from the base 42 in the Y direction and a fourth portion 48 protruding in the Z direction. The length L2 of the second rib 44 gradually decreases from the third portion 47 to the fourth portion 48. On the other hand, the length L1 of the first rib 43 is the same from the first portion 45 to the second portion 46. In the first rib 43, the top end portion 43b from the first portion 45 to the second portion 46 is in an arc shape when viewed from the X direction. In addition, in the second rib 44, the top end portion 44b from the third portion 47 to the fourth portion 48 is in an arc shape when viewed from the X direction.

[0035] The wire lead-out portion 32 has a first through hole 32b and a second through hole 32c. The first through hole 32b and the second through hole 32c penetrate the wire lead-out portion 32 along the Z direction. The contact portion 41 is located between the first through hole 32b and the second through hole 32c in the Y direction.

[0036] like Figure 2As shown, the clamping and fixing portion 51 passes through the first through hole 32b and the second through hole 32c, respectively, and passes through the outer periphery of the bent portion Wa of the wire harness W. And, the top end portion of the clamping and fixing portion 51 is inserted into and locked with a locking portion (not shown) provided at the base end portion of the clamping and fixing portion 51. Thus, the clamping and fixing portion 51 clamps the bent portion Wa to the abutment portion 41. That is, the clamping and fixing portion 51 presses the bent portion Wa to the top ends 43b and 44b of the first rib 43 and the second rib 44. Thus, the top ends 43b and 44b of the first rib 43 and the second rib 44 are in close contact with the outer peripheral surface of the bent portion Wa.

[0037] Furthermore, when viewed from a direction (e.g., Z direction) perpendicular to the direction in which the wire harness W extends, the clamping and fixing portion 51 is located between the first rib 43 and the second rib 44. In other words, when viewed from the Z direction, the first rib 43 and the second rib 44 are provided on both sides of the clamping and fixing portion 51. Thus, the clamping force of the clamping and fixing portion 51 can be evenly distributed to each of the first rib 43 and the second rib 44.

[0038] The effects of this embodiment will be described. (1) The wire lead-out portion 32 has an abutment portion 41 that abuts against the bent portion Wa and a clamping and fixing portion 51 that clamps and fixes the bent portion Wa to the abutment portion 41. In addition, the abutment portion 41 is formed in a shape that is consistent with the shape of the bent portion Wa. According to this structure, the bent portion Wa of the wire harness W is pressed against the abutment portion 41 by the clamping and fixing portion 51, and the abutment portion 41 is formed in a shape that is consistent with the shape of the bent portion Wa. As a result, the formation of a gap between the abutment portion 41 and the bent portion Wa can be suppressed. Therefore, the play of the bent portion Wa of the wire harness W is reduced, and as a result, the wire harness W can be stably held by the abutment portion 41 and the clamping and fixing portion 51.

[0039] (2) The contact portion 41 has the first rib 43 and the second rib 44 arranged in a row along the extending direction of the wire harness W. The bent portion Wa contacts the top end portion 43b of the first rib 43 and the top end portion 44b of the second rib 44, respectively. According to this structure, the bent portion Wa of the wire harness W is pressed against the top ends 43b and 44b of the first rib 43 and the second rib 44, respectively, by the clamping fixing portion 51. Therefore, the bent portion Wa can be stably held at at least two points by the top ends 43b and 44b of the first rib 43 and the second rib 44, respectively.

[0040] (3) The clamping and fixing portion 51 is located between the first rib 43 and the second rib 44. According to this configuration, the clamping force of the clamping and fixing portion 51 applied to the bent portion Wa of the wire harness W can be evenly distributed to each of the first rib 43 and the second rib 44.

[0041] (4) The length L1 of the first rib 43 and the length L2 of the second rib 44 are set to lengths that match the shape of the curved portion Wa. With this configuration, the distal ends 43b and 44b of the first rib 43 and the second rib 44 can contact the curved portion Wa of the wire harness W.

[0042] (5) The length L1 from the base end 43a to the tip end 43b of the first rib 43 and the length L2 from the base end 44a to the tip end 44b of the second rib 44 are set to different lengths. With this configuration, the tip ends 43b and 44b of the first rib 43 and the second rib 44 can be brought into contact with the curved portion Wa of the wire harness W.

[0043] (6) The first rib 43 is disposed on the outer side of the housing 22 relative to the second rib 44. Furthermore, the length L2 of the second rib 44 is longer than the length L1 of the first rib 43. Here, assuming that the length L2 of the second rib 44 is equal to or shorter than the length L1 of the first rib 43, the third portion 47 of the second rib 44 is separated from the curved portion Wa. In this regard, in the present embodiment, the length L2 of the second rib 44 is set longer than the length L1 of the first rib 43, so that the third portion 47 of the second rib 44 can be closely attached to the outer peripheral surface of the curved portion Wa. Therefore, the first rib 43, the second rib 44 and the clamping fixing portion 51 can appropriately hold the wire harness W.

[0044] (Variation Example) This embodiment can be implemented as the following modifications. This embodiment and the following modifications can be implemented in combination with each other within the range that there is no technical contradiction.

[0045] In the above embodiment, the tip portions 43b and 44b of the first rib 43 and the second rib 44 included in the contact portion 41 contact the bent portion Wa of the wire harness W, but the present invention is not particularly limited to this. Figure 4 As shown, the contact portion 41 may also include a close contact surface 61 having a shape that is consistent with the shape of the curved portion Wa. According to this structure, the curved portion Wa of the wire harness W is pressed by the clamping and fixing portion 51 against the close contact surface 61 having a shape that is consistent with the shape of the curved portion Wa. Thus, the formation of a gap between the close contact surface 61 and the curved portion Wa can be suppressed. Therefore, the play in the curved portion Wa is reduced, and as a result, the wire harness W can be stably held by the close contact surface 61 and the clamping and fixing portion 51.

[0046] The clamping and fixing portion 51 may also be formed integrally with the housing 22 . The first rib 43 may be provided on the inner side of the outer side surface 32 a of the electric wire lead-out portion 32 .

[0047] In the contact portion 41 of the above embodiment, the ribs that contact the bent portion Wa are two, namely the first rib 43 and the second rib 44 . However, the present invention is not limited thereto and the ribs may be one or three or more. The contact portion 41 may be configured to contact the inner side of the bend of the curved portion Wa. The inner side of the bend of the curved portion Wa is the concave side of the curved portion Wa when viewed from the Z direction. In the case of a configuration in which the contact portion 41 contacts the inner side of the bend of the curved portion Wa, the length L1 of the first rib 43 may be longer than the length L2 of the second rib 44. Thus, the top ends 43b and 44b of the first rib 43 and the second rib 44 can be brought into close contact with the outer peripheral surface of the curved portion Wa of the wire harness W.

[0048] The embodiments and modifications disclosed herein are illustrative in all aspects, and the present invention is not limited to these illustrative examples. That is, the scope of the present invention is indicated by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. Description of Reference Numerals

[0049] 10 Battery wiring module 11. Battery 12 Battery Cells 13 Module mounting surface 14 Battery Terminals 21 Wire 22 Housing 23 Busbar 24 Connectors 25 Cover 31 Wire storage area 32 Wire lead-out section 32a Outer side 32b 1st through hole 32c 2nd through hole 33 Bus bar holding portion 34 Protect the wall 41 abutment 42 base 43 1st rib 43a Base end 43b Top 44 2nd rib 44a Base end 44b Top 45 Part 1 46 Part 2 47 Part 3 48 Part 4 51 Tightening and fixing part 61 close to the surface L1 Length of the first rib L2 Length of the second rib W Wiring harness Wa bending part

Claims

1. A battery wiring module, which can be installed on a battery, the battery wiring module comprising: a plurality of wires electrically connected to the battery; and, The housing has a wire storage portion for storing the plurality of wires, wherein: The wire storage portion includes a wire lead-out portion, and the wire lead-out portion leads the wire bundle formed by bundling the plurality of wires to the outside of the wire storage portion. The electric wire harness has a bent portion, The electric wire lead-out portion includes a contact portion that contacts the bent portion and a clamping and fixing portion that clamps and fixes the bent portion to the contact portion. The contact portion has a shape that matches the shape of the bent portion.

2. The battery wiring module according to claim 1, wherein: The contact portion includes a first rib and a second rib arranged in a row along a direction in which the wire harness extends. The bent portion abuts against a tip end portion of the first rib and a tip end portion of the second rib, respectively.

3. The battery wiring module according to claim 2, wherein: The tightening and fixing portion is located between the first rib and the second rib.

4. The battery wiring module according to claim 2 or 3, wherein: The lengths of each of the first rib and the second rib from the base end portion to the tip end portion are set to lengths that match the shape of the curved portion.

5. The battery wiring module according to claim 4, wherein: The length of the first rib and the length of the second rib are set to different lengths from each other.

6. The battery wiring module according to claim 5, wherein: The first rib is disposed on an outer side of the housing relative to the second rib. The length of the second rib is longer than the length of the first rib.

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