Battery wiring module

Abstract

One aspect of the present invention provides a battery wiring module capable of limiting the position of an electric wire. A battery wiring module is provided with: a case (22) having a wire housing section (31); and a cover (25) having a cover part (70) for covering the electric wire accommodating part (31). The cover (25) is provided with a first displacement limiting part (71) extending from the cover part (70). The first displacement restricting portion (71) restricts displacement of the electric wire (21) in a direction approaching the cover portion (70).

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 driving power source. The battery wiring module includes: a wire electrically connected to the battery; a housing having a wire storage portion for storing the wire; and a cover covering the wire storage portion. 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] The present inventors have studied how to restrict the positions of the electric wires in the battery wiring module as described above. An object of the present invention is to provide a battery wiring module capable of limiting the position of electric wires. Solutions to Solve Problems

[0005] The battery wiring module of the present invention can be installed on a battery, and the battery wiring module comprises: an electric wire electrically connected to the battery; a shell having a wire storage portion for storing the electric wire; and a cover having a cover portion covering the wire storage portion, the cover having a displacement limiting portion extending from the cover portion, and the displacement limiting portion limits the displacement of the electric wire in a direction approaching the cover portion. Effects of the Invention

[0006] The battery wiring module of the present invention achieves the effect of restricting the positions of the electric wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic plan view of a battery wiring module according to an embodiment. Figure 2 This is a perspective view showing a part of the battery wiring module of this embodiment. Figure 3 This is an exploded perspective view showing a part of the battery wiring module of this embodiment. Figure 4 1 is a plan view showing a portion of a casing in the battery wiring module of this embodiment. Figure 5 yes Figure 4 The 5-5 line section view. Figure 6 Schematic diagram showing the state of the cover being assembled in the battery wiring module of this embodiment. Figure 7 This is an exploded perspective view showing a part of the battery wiring module of this embodiment. Figure 8 Schematic diagram showing the state of the cover being assembled in the battery wiring module of this embodiment. DETAILED DESCRIPTION

[0008] [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 can be installed on a battery, the battery wiring module comprising: an electric wire electrically connected to the battery; a housing having an electric wire storage portion for storing the electric wire; and a cover having a cover portion covering the electric wire storage portion, the cover having a displacement limiting portion extending from the cover portion, the displacement limiting portion limiting the displacement of the electric wire in a direction approaching the cover portion.

[0009] According to this configuration, the position of the electric wires can be restricted by the displacement restricting portion, and the electric wires can be accommodated in the electric wire accommodation portion. [2] In the above [1], the electric wire storage portion may have a slit for leading out the electric wires, and the displacement restricting portion may be configured to block a portion of the slit.

[0010] According to this configuration, the position of the electric wire can be restricted by the displacement restricting portion in the vicinity of the slit through which the electric wire is led out. [3] In the above [2], the shell may have a snap-fitting portion, which snaps into an electrical component mounted on the shell, and the snap-fitting portion is arranged at a position opposite to the slit on the outside of the wire storage portion, and the top end portion of the displacement limiting portion is located at a position farther from the cover portion than the snap-fitting portion when viewed from the opposite direction of the snap-fitting portion and the slit.

[0011] According to this configuration, the position of the electric wire can be restricted to a position farther from the cover than the engagement portion by the tip of the displacement restriction portion. Thus, interference between the electric component engaged with the engagement portion and the electric wire can be suppressed.

[0012] [4] In the above [2] or [3], the wire storage portion may have a bottom wall and a first side wall and a second side wall extending from the bottom wall and opposite to each other, and the ends of the first side wall and the second side wall on the side opposite to the bottom wall are used as respective open ends, the cover portion covers the open end sides of the wire storage portion, and the slit is provided on the first side wall in a manner extending from the open end to the end connected to the bottom wall.

[0013] According to this configuration, the position of the electric wire can be restricted by the displacement restricting portion in the vicinity of the slit provided in the first side wall of the electric wire housing portion. [5] In the above [4], the cover may include a contact portion that contacts the open end portion of the first side wall.

[0014] According to this structure, the cover does not approach the bottom wall by more than a predetermined amount by the contact portion of the cover to contact the open end of the first side wall, thereby preventing the cover from being pressed toward the bottom wall and causing the wires to be clamped by the displacement restriction portion and the bottom wall.

[0015] [6] In the above [5], the contact portion may include a first contact portion and a second contact portion provided on both sides of the displacement restricting portion. According to this structure, the first and second contact portions of the cover contact the open end of the first side wall on both sides of the displacement restricting portion. Therefore, the first and second contact portions can appropriately prevent the displacement restricting portion from approaching the bottom wall due to the pressing of the cover.

[0016] [7] In any one of the above [4] to [6], the displacement restricting portion may include an insertion portion that is inserted into the slit. According to this configuration, the displacement restricting portion including the insertion portion can be configured not to be located inside the wire housing portion, thereby helping to ensure space inside the wire housing portion.

[0017] [8] In any one of the above [4] to [7], the slit may have an inclined portion whose width increases toward the open end of the first side wall. According to this structure, the electric wire can be easily inserted into the slit by utilizing the inclined portion. As a result, the assembly performance of the electric wire to the housing can be improved.

[0018] [9] In the above [8], the displacement limiting portion may include an inner wall portion located on the inner side of the wire storage portion, and the inner wall portion is arranged at a position overlapping with the inclined portion when viewed from a direction opposite to the first side wall and the second side wall.

[0019] According to this structure, the inner wall portion can prevent the electric wires from being caught by the inclined portion and the displacement restricting portion.

[10] In the above [8], the slit having the inclined portion may be one of a plurality of slits provided on the shell along the length direction of the wire storage portion, the displacement limiting portion may be one of a plurality of displacement limiting portions provided on the cover corresponding to the plurality of slits, the wire storage portion may have a wire lead-out portion at an end portion in the length direction, the wire may be one of a plurality of wires, one end portion of each of the plurality of wires may be independently led out from the plurality of slits, and the other end portion of each of the plurality of wires may be collectively led out from the wire lead-out portion.

[0020] According to this structure, since each slit has an inclined portion, the assembly of the plurality of electric wires can be improved. In addition, since a plurality of displacement restricting portions are provided corresponding to the plurality of slits, the position of the electric wire can be restricted in each slit by the displacement restricting portion.

[0021]

[11] In the above

[10] , it may also be that the multiple displacement limiting parts include a first displacement limiting part and a second displacement limiting part, the first displacement limiting part has an insertion part inserted into a corresponding one of the multiple slits, the second displacement limiting part has an inner wall part located on the inner side of the wire storage part, the inner wall part is arranged at a position overlapping with the inclined part when viewed from the direction opposite to the first side wall and the second side wall, the first displacement limiting part does not have the inner wall part, and the first displacement limiting part is arranged corresponding to the slit closest to the wire lead-out part among the multiple slits.

[0022] According to this structure, in the slit where the second displacement limiting portion is arranged, the inner side wall portion can be used to prevent the electric wire from being caught by the inclined portion and the displacement limiting portion. In addition, the first displacement limiting portion without the inner side wall portion is provided corresponding to the slit closest to the electric wire lead-out portion. The electric wires led out from the slit closest to the electric wire lead-out portion among the plurality of electric wires are arranged near the bottom wall, so that in the slit, the electric wires are not likely to float in the direction away from the bottom wall. Therefore, by configuring the first displacement limiting portion corresponding to the slit without the inner side wall portion, it can help to ensure the space in the electric wire storage portion.

[0023]

[12] In the above

[11] , the second displacement restricting portion may be provided corresponding to a slit farthest from the electric wire lead-out portion among the plurality of slits. According to this structure, the wires led out of the slit farthest from the wire lead-out portion among the plurality of wires are arranged to be away from the bottom wall of the wire storage portion, so that in the slit, the wires are easily floated in the direction away from the bottom wall. Therefore, in the slit, there is a tendency for the risk of the wires being caught by the inclined portion and the displacement limiting portion to increase. Here, by having the second displacement limiting portion corresponding to the slit have an inner side wall portion, the inner side wall portion can be used to effectively prevent the wires from being caught by the inclined portion and the displacement limiting portion.

[0024]

[13] In the above

[10] , the plurality of displacement limiting portions may respectively include an inner wall portion located on the inner side of the wire storage portion, and the inner wall portion is arranged at a position overlapping with the inclined portion when viewed from a direction opposite to the first side wall and the second side wall.

[0025] According to this configuration, in each slit, the electric wire can be prevented from being caught by the inclined portion and the displacement restricting portion by the inner wall portion. [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 of explanation, a part of the structure is sometimes enlarged or simplified. In addition, the size ratios of the various parts are sometimes different in the various drawings. In addition, "opposing" in this specification refers to the position where the surfaces or components are located directly opposite each other, including not only the situation where they are completely located directly opposite each other, but also the situation where they are partially located directly opposite each other. In addition, "opposing" in this specification includes both the situation where a component independent of the two parts is interposed between the two parts, and the situation where nothing is sandwiched between the two parts.

[0026] 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 and the power generation motor according to the charging state and the operating state of the vehicle.

[0027] 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 relative 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.

[0028] 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 along the X direction, the two battery terminals 14 are arranged along the Y direction on the upper surface of the battery cell 12.

[0029] (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 electric 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 covering the upper part of the housing 22.

[0030] (Structure of Housing 22) The housing 22 is formed of an insulator such as a synthetic resin. The housing 22 has a first bus bar holding portion 26 and a second bus bar holding portion 27. The shapes of the first bus bar holding portion 26 and the second bus bar holding portion 27 are different from each other. A plurality of first bus bar holding portions 26 and second bus bar holding portions 27 are arranged alternately in the X direction. Two columns of the columns formed by the first bus bar holding portions 26 and the second bus bar holding portions 27 are provided corresponding to the two columns of the bus bars 23 arranged in the X direction. A pair of first bus bar holding portions 26 and second bus bar holding portions 27 adjacent in the X direction hold one bus bar 23. Each bus bar 23 is provided in a manner spanning the first bus bar holding portion 26 and the second bus bar holding portion 27 adjacent in the X direction.

[0031] The housing 22 has a sensor housing portion 30. For example, a plurality of sensor housing portions 30 are provided. A temperature sensor 60 for detecting the temperature of the battery 11 is housed in at least one of the plurality of sensor housing portions 30.

[0032] Figure 2 , Figure 3 and Figure 4 FIG. 2 is a diagram showing the vicinity of the sensor housing portion 30 in the housing 22. Figure 4 As shown, the housing 22 has a wire housing portion 31 extending in the X direction. Two wire housing portions 31 are provided corresponding to two rows of bus bars 23 arranged in the X direction on both sides of the housing 22 in the Y direction.

[0033] The wire storage portion 31 includes a bottom wall 32 and a first side wall 33 and a second side wall 34 that are opposite to each other in the Y direction. The lower surface of the bottom wall 32 is opposite to the module mounting surface 13 in the Z direction. The first side wall 33 and the second side wall 34 extend upward from the bottom wall 32, respectively. The wires 21 are stored between the first side wall 33 and the second side wall 34 in the Y direction. In addition, the first side wall 33 is a side wall that is located on the outer side of the second side wall 34 in the Y direction. The first bus bar holding portion 26 and the second bus bar holding portion 27 are provided on the outer side of the wire storage portion 31 in the Y direction.

[0034] The upper side of the opening of the wire storage portion 31 is covered by the cover 25. Specifically, the first side wall 33 and the second side wall 34 have open ends 33a and 34a, respectively, which are ends on the opposite side to the ends connected to the bottom wall 32. The cover 25 covers the open ends 33a and 34a of the wire storage portion 31.

[0035] like Figure 3 and Figure 4 As shown, the sensor storage portion 30 is formed in a manner spanning a first bus bar holding portion 26 and a second bus bar holding portion 27 adjacent to each other in the X direction. In addition, the first bus bar holding portion 26 and the second bus bar holding portion 27 spanned by the sensor storage portion 30 are described below as the first bus bar holding portion 26a and the second bus bar holding portion 27a, respectively. In addition, the first bus bar holding portion 26 other than the first bus bar holding portion 26a is referred to as the first bus bar holding portion 26b. In addition, the second bus bar holding portion 27 other than the second bus bar holding portion 27a is referred to as the second bus bar holding portion 27b.

[0036] The first bus bar holding portion 26b and the second bus bar holding portion 27b extend outward in the Y direction from the wire storage portion 31. Openings 35 are provided at positions corresponding to the plurality of second bus bar holding portions 27b on the first side wall 33 of the wire storage portion 31. One end of the wire 21 connected to the bus bar 23 held in the second bus bar holding portion 27b is led out from the inside of the wire storage portion 31 through the opening 35 to the outside in the Y direction.

[0037] The first bus bar holding portion 26a and the second bus bar holding portion 27a extend outward in the Y direction from the sensor housing portion 30. A slit 36 ​​is provided at a position corresponding to the second bus bar holding portion 27a on the first side wall 33 of the wire housing portion 31. One end of the wire 21 connected to the bus bar 23 held by the second bus bar holding portion 27a is led out from the inside of the wire housing portion 31 through the slit 36 ​​to the outside in the Y direction.

[0038] The wire storage portion 31 has a wire lead-out portion 28 at the end portion in the longitudinal direction (see Figure 1The ends of the electric wires 21 on the side opposite to the ends connected to the bus bar 23 are collectively led out from the electric wire leading portion 28 to the outside of the housing 22 and connected to the connector 24 .

[0039] (Structure of sensor housing portion 30) like Figure 2 and Figure 4 As shown, the housing 22 has an opposing wall portion 37 provided across the first bus bar holding portion 26a and the second bus bar holding portion 27a. The opposing wall portion 37 is provided outside the first side wall 33 of the wire storage portion 31 in the Y direction. The opposing wall portion 37 is, for example, parallel to the first side wall 33. The opposing wall portion 37 is opposed to the first side wall 33 in the Y direction. The first bus bar holding portion 26a extends from the opposing wall portion 37 to the outside in the Y direction.

[0040] The sensor housing portion 30 is provided between the first side wall 33 and the opposing wall portion 37. In addition, the sensor housing portion 30 is provided between the first bus bar holding portion 26a and the wire housing portion 31. The sensor housing portion 30 has a spring support portion 38. The spring support portion 38 is formed so as to connect the first side wall 33 and the opposing wall portion 37.

[0041] like Figure 5 As shown, the sensor storage portion 30 stores a temperature sensor 60 and a spring member 61. The spring member 61 is provided between the temperature sensor 60 and the spring support portion 38. The spring member 61 applies force to the temperature sensor 60 downward. The temperature sensor 60 is, for example, a thermistor. The temperature sensor 60 has a temperature detection surface 60a. The temperature detection surface 60a of the temperature sensor 60 is pressed against the upper surface 12a of the battery cell 12 by the force of the spring member 61.

[0042] like Figure 2 and Figure 5 As shown, the sensor storage portion 30 has a holding piece 41 for holding the temperature sensor 60. The holding piece 41 is arranged outside the wire storage portion 31 in the Y direction. The holding piece 41 has an extension portion 42 extending from the base end portion of the second bus bar holding portion 27a to the upper side in the Z direction, and a claw portion 43 protruding from the top end portion of the extension portion 42 along the X direction. The extension portion 42 is formed to be able to bend in the X direction. The temperature sensor 60 is hooked on the claw portion 43 above the Z direction. Thus, the claw portion 43 limits the displacement of the temperature sensor 60 to the upper side in the Z direction. The claw portion 43 of the holding piece 41 is arranged at a position opposite to the slit 36 ​​in its opening direction. In addition, the opening direction of the slit 36 ​​is a direction along the Y direction. That is, the claw portion 43 of the holding piece 41 is opposite to the slit 36 ​​in the Y direction.

[0043] (Structure of Slit 36) like Figure 3 and Figure 6As shown, the slit 36 ​​has a straight portion 51 and an inclined portion 52. The straight portion 51 is formed on the first side wall 33 from the middle portion of the slit 36 ​​in the Z direction to the lower end connected to the bottom wall 32. The inclined portion 52 is formed on the first side wall 33 from the upper end of the straight portion 51 to the open end 33a. That is, in the present embodiment, the straight portion 51 is formed in the substantially lower half of the slit 36, and the inclined portion 52 is formed in the substantially upper half of the slit 36. The width of the straight portion 51 in the X direction is the same in the Z direction. The inclined portion 52 is formed in a shape in which the width in the X direction increases as it moves toward the open end 33a. The end surface of the slit 36 ​​at the inclined portion 52 is, for example, in a straight line shape.

[0044] The slits 36 are provided in plurality corresponding to the plurality of sensor housing portions 30. The housing 22 of this embodiment has two sensor housing portions 30 and two slits 36. Figure 1 As shown, the slit 36 ​​closest to the wire lead-out portion 28 among the plurality of slits 36 (two in this embodiment) is defined as the first slit 36a. Also, the slit 36 ​​farthest from the wire lead-out portion 28 among the plurality of slits 36 (two in this embodiment) is defined as the second slit 36b.

[0045] (Structure of cover 25) like Figure 2 and Figure 3 As shown, the cover 25 is formed of an insulator such as a synthetic resin. The cover 25 has a cover portion 70 covering the wire storage portion 31. The cover portion 70 is, for example, in the shape of a plate perpendicular to the Z direction. The upper surface of the cover portion 70 is, for example, configured to be located at the same position as the open end portion 33a of the first side wall 33 in the Z direction. In addition, the cover 25 has a locking portion 70a extending from the cover portion 70. The locking portion 70a is locked with the locking protrusion 33b provided on the first side wall 33. Thus, the cover 25 is fixed to the housing 22.

[0046] The cover 25 includes a first displacement restricting portion 71 and a second displacement restricting portion 72 extending from the cover portion 70 in the Z direction. The first displacement restricting portion 71 is provided corresponding to the first slit 36a (see Figure 3 The second displacement restricting portion 72 is provided corresponding to the second slit 36b (see Figure 7 ).

[0047] (Structure of the First Displacement Limiting Section 71) like Figure 3 and Figure 5As shown in the figure, the first displacement limiting portion 71 has an insertion portion 73 inserted into the first slit 36a. The insertion portion 73 is configured to block a portion of the first slit 36a. In detail, the insertion portion 73 blocks the range from the upper end of the inclined portion 52 to the middle portion of the straight portion 51 in the Z direction in the first slit 36a. In addition, the shape of the insertion portion 73 viewed from the opening direction of the first slit 36a, that is, the Y direction, follows the shape of the inclined portion 52 and the straight portion 51. That is, the insertion portion 73 is consistent with the shape of the first slit 36a, and is a shape that becomes increasingly thinner at the lower end side.

[0048] like Figure 5 As shown, the first displacement limiting portion 71 has a top end portion 71a in the extending direction thereof. In the first displacement limiting portion 71, the top end portion 71a coincides with the lower end portion of the insertion portion 73. In the first slit 36a, the electric wire 21 is led out to the outside of the electric wire storage portion 31 from the gap formed between the top end portion 71a of the first displacement limiting portion 71 and the bottom wall 32. In a state where the cover 25 is assembled to the housing 22, the position of the top end portion 71a of the first displacement limiting portion 71 when viewed from the Y direction is located at a position farther from the cover portion 70 than the claw portion 43 of the retaining piece 41. That is, when viewed from the Y direction, the top end portion 71a is located below the claw portion 43 in the Z direction.

[0049] The cover 25 has a first abutting portion 74a and a second abutting portion 74b. The first abutting portion 74a and the second abutting portion 74b are respectively provided on both sides of the first displacement limiting portion 71 in the X direction. In other words, the first displacement limiting portion 71 is located between the first abutting portion 74a and the second abutting portion 74b in the X direction. The first abutting portion 74a and the second abutting portion 74b abut against the open end portion 33a of the first side wall 33, respectively. In addition, the position of the open end portion 33a in the Z direction is lowered downward by the thickness of the cover portion 70 in the Z direction at each portion abutting against the first abutting portion 74a and the second abutting portion 74b.

[0050] (Structure of the Second Displacement Limiting Section 72) like Figure 7 and Figure 8 As shown, the second displacement limiting portion 72 has an insertion portion 73 and an inner wall portion 75 similar to the first displacement limiting portion 71. The insertion portion 73 of the second displacement limiting portion 72 is inserted into the second slit 36b. The shape and other structures of the insertion portion 73 of the second displacement limiting portion 72 are the same as those of the insertion portion 73 of the first displacement limiting portion 71, so detailed description is omitted.

[0051] The inner wall portion 75 extends from the insertion portion 73 to both sides in the X direction. The inner wall portion 75 is formed integrally with the insertion portion 73. In the second displacement limiting portion 72, the insertion portion 73 is formed so as to protrude from the inner wall portion 75 in the Y direction. In addition, in the second displacement limiting portion 72, the lower end position of the insertion portion 73 and the lower end position of the inner wall portion 75 coincide with each other.

[0052] When the cover 25 is assembled to the housing 22, the inner wall portion 75 is located inside the wire storage portion 31. In the X direction, the width of the inner wall portion 75 in the X direction is greater than the width of the straight portion 51 in the second slit 36b. Thus, the inner wall portion 75 is arranged at a position overlapping the inclined portion 52 when viewed from the opening direction of the second slit 36b, that is, the Y direction.

[0053] The top end 72a of the second displacement restricting portion 72 in the extending direction is formed in the same structure as the top end 71a of the first displacement restricting portion 71. That is, in the second slit 36b, the electric wire 21 is led out to the outside of the electric wire storage portion 31 from the gap formed between the top end 72a of the second displacement restricting portion 72 and the bottom wall 32. And, in the state where the cover 25 is assembled to the housing 22, the position of the top end 72a of the second displacement restricting portion 72 when viewed from the Y direction is located at a position farther from the cover 70 than the claw 43 of the retaining piece 41. That is, when viewed from the Y direction, the top end 72a is located below the claw 43 in the Z direction.

[0054] Furthermore, the first contact portion 74a and the second contact portion 74b are also formed on both sides of the second displacement restricting portion 72 in the X direction. That is, the second displacement restricting portion 72 is located between the first contact portion 74a and the second contact portion 74b in the X direction.

[0055] Next, the assembly method of each electric wire 21, the cover 25, and the temperature sensor 60 in the battery wiring module 10 will be described. When a plurality of electric wires 21 are arranged in the housing 22, the electric wires 21 connected to the bus bar 23 closer to the electric wire lead-out portion 28 are assembled in order. Therefore, the electric wires 21 connected to the bus bar 23 closer to the electric wire lead-out portion 28 pass through the electric wire storage portion 31 closer to the bottom wall 32. Furthermore, the electric wires 21 connected to the bus bar 23 farther from the electric wire lead-out portion 28 are arranged on the electric wires 21 arranged earlier.

[0056] After the electric wires 21 are arranged in the housing 22 , the cover 25 is assembled to the housing 22 . Here, Figure 6The figure shows a state where the first displacement restricting portion 71 is inserted into the first slit 36a when the cover 25 is assembled. As shown in the figure, the electric wire 21 passing through the first slit 36a sometimes floats in a direction away from the bottom wall 32 and is located above the claw 43 of the retaining piece 41. In this case, when the first displacement restricting portion 71 is inserted into the first slit 36a downward in the Z direction, the top end portion 71a of the first displacement restricting portion 71 contacts the electric wire 21, and the electric wire 21 is moved below the claw 43.

[0057] If the temperature sensor 60 is assembled in a state where the electric wire 21 is located above the claw 43, there is a possibility that the electric wire 21 is sandwiched between the claw 43 and the temperature sensor 60. In this regard, in the present embodiment, the first displacement restriction portion 71 restricts the electric wire 21 so that it does not move to the upper side of the claw 43. Therefore, the occurrence of the electric wire 21 being sandwiched between the claw 43 and the temperature sensor 60 can be suppressed.

[0058] In addition, the first slit 36a is located closer to the wire lead-out portion 28 than the second slit 36b. Therefore, in the wire storage portion 31, other wires 21 are arranged on the wire 21 passing through the first slit 36a. Therefore, the wire 21 passing through the first slit 36a is unlikely to float away from the bottom wall 32.

[0059] On the other hand, the second slit 36b is located farther from the wire lead-out portion 28 than the first slit 36a. Therefore, the wire 21 passing through the second slit 36b is arranged on other wires 21 in the wire storage portion 31. Therefore, the wire 21 passing through the second slit 36b is easily floated in a direction away from the bottom wall 32.

[0060] Figure 8 The figure shows a state where the second displacement limiting portion 72 is inserted into the second slit 36b when the cover 25 is assembled. As shown in the figure, the electric wire 21 passing through the second slit 36b may float to the inclined portion 52 of the second slit 36b. In this case, when the second displacement limiting portion 72 is inserted downward in the Z direction, the lower end of the inner wall portion 75 of the second displacement limiting portion 72 contacts the electric wire 21, causing the electric wire 21 to move downward. At this time, the electric wire 21 pressed downward by the inner wall portion 75 moves downward along the inclined portion 52 of the second slit 36b and enters the straight portion 51. Then, the electric wire 21 is pressed to the lower side of the claw portion 43 by the top end portion 72a of the second displacement limiting portion 72.

[0061] Here, it is assumed that the second displacement limiting portion 72 does not have the inner wall portion 75. In this case, when the electric wire 21 floats to the inclined portion 52, even if the insertion portion 73 is inserted into the second slit 36b, the electric wire 21 cannot be brought into contact with the lower end of the insertion portion 73, and there is a possibility that the electric wire 21 is sandwiched between the inclined portion 52 and the second displacement limiting portion 72. In this regard, in the present embodiment, the second displacement limiting portion 72 has the inner wall portion 75 that guides the electric wire 21 located at the inclined portion 52 to the straight portion 51. Therefore, it is possible to suppress the electric wire 21 from being sandwiched between the inclined portion 52 and the second displacement limiting portion 72.

[0062] In addition, the inner wall portion 75 is not provided in the first displacement restricting portion 71 corresponding to the first slit 36a. As described above, since the electric wire 21 passing through the first slit 36a is not easy to float in the direction away from the bottom wall 32, the electric wire 21 is not easy to float to the inclined portion 52 of the first slit 36a. Therefore, the inner wall portion 75 is omitted in the first displacement restricting portion 71 to ensure space in the electric wire storage portion 31.

[0063] The effects of this embodiment will be described. (1) The cover 25 includes the first displacement restricting portion 71 and the second displacement restricting portion 72 extending from the cover portion 70. The first displacement restricting portion 71 and the second displacement restricting portion 72 restrict the displacement of the electric wire 21 in the direction approaching the cover portion 70. According to this configuration, since the position of the electric wire 21 is restricted by the first displacement restricting portion 71 and the second displacement restricting portion 72, for example, interference between the electric wire 21 and the temperature sensor 60 can be suppressed.

[0064] (2) The wire storage portion 31 has the slit 36 ​​for leading out the wire 21. The first displacement restricting portion 71 and the second displacement restricting portion 72 are respectively configured to block a portion of the slit 36. According to this configuration, the position of the wire 21 can be restricted by the first displacement restricting portion 71 and the second displacement restricting portion 72 near the slit 36 ​​for leading out the wire 21.

[0065] (3) The housing 22 includes the claw portion 43 as an engaging portion that engages with the temperature sensor 60 mounted on the housing 22. The claw portion 43 is provided at a position that is opposed to the slit 36 ​​on the outside of the wire storage portion 31. Furthermore, when viewed from the Y direction, which is the opposing direction of the claw portion 43 and the slit 36, the positions of the top ends 71a and 72a of the first displacement restricting portion 71 and the second displacement restricting portion 72 are located farther from the cover 70 than the claw portion 43. According to this structure, the position of the wire 21 can be restricted to a position farther from the cover 70 than the claw portion 43 by the top ends 71a and 72a of the first displacement restricting portion 71 and the second displacement restricting portion 72. Thus, interference between the temperature sensor 60 engaged with the claw portion 43 and the wire 21 can be suppressed.

[0066] (4) The wire storage section 31 includes a bottom wall 32 and a first side wall 33 and a second side wall 34 extending from the bottom wall 32 and facing each other. The cover 70 covers the open end portions 33a and 34a of the wire storage section 31. The slit 36 ​​is provided on the first side wall 33 so as to extend from the open end portion 33a to the end portion connected to the bottom wall 32. According to this structure, the position of the wire 21 can be restricted by the first displacement restricting portion 71 and the second displacement restricting portion 72 near the slit 36 ​​provided on the first side wall 33 of the wire storage section 31.

[0067] (5) The cover 25 includes the first contact portion 74a and the second contact portion 74b, and the first contact portion 74a and the second contact portion 74b contact the open end portion 33a of the first side wall 33. According to this structure, the cover 25 does not approach the bottom wall 32 by more than a predetermined amount by the first contact portion 74a and the second contact portion 74b respectively contacting the open end portion 33a of the first side wall 33. Thus, it is possible to prevent the cover 25 from being pressed toward the bottom wall 32 and the electric wire 21 from being clamped by the first displacement restricting portion 71 and the second displacement restricting portion 72 and the bottom wall 32.

[0068] (6) The first contact portion 74a and the second contact portion 74b are provided on both sides of the first displacement limiting portion 71 in the X direction. Thus, the first contact portion 74a and the second contact portion 74b respectively contact the open end portion 33a of the first side wall 33 on both sides of the first displacement limiting portion 71. In addition, the first contact portion 74a and the second contact portion 74b are provided on both sides of the second displacement limiting portion 72 in the X direction. Thus, the first contact portion 74a and the second contact portion 74b respectively contact the open end portion 33a of the first side wall 33 on both sides of the second displacement limiting portion 72. Therefore, the first contact portion 74a and the second contact portion 74b can appropriately suppress the first displacement limiting portion 71 and the second displacement limiting portion 72 from approaching the bottom wall 32 due to the press-fitting of the cover 25.

[0069] (7) The first displacement restricting portion 71 includes the insertion portion 73 inserted into the first slit 36a. This configuration allows the first displacement restricting portion 71 including the insertion portion 73 to be not located inside the wire housing portion 31. This helps ensure space inside the wire housing portion 31.

[0070] (8) The slit 36 ​​has the inclined portion 52 whose width increases toward the open end 33a of the first side wall 33. According to this configuration, the inclined portion 52 can be used to easily insert the wire 21 into the slit 36. As a result, the assembly of the wire 21 to the housing 22 can be improved.

[0071] (9) The second displacement restricting portion 72 includes an inner wall portion 75 located inside the wire storage portion 31. The inner wall portion 75 is disposed at a position overlapping the inclined portion 52 when viewed from the Y direction, which is the opposing direction of the first side wall 33 and the second side wall 34. With this configuration, the inner wall portion 75 can prevent the wire 21 from being sandwiched between the inclined portion 52 and the second displacement restricting portion 72.

[0072] (10) A plurality of slits 36 having an inclined portion 52 are provided in the housing 22 along the longitudinal direction of the wire storage portion 31. The wire storage portion 31 has a wire lead-out portion 28 at an end portion in the longitudinal direction. One end portion of each of the plurality of wires 21 is led out individually from the plurality of slits 36. In addition, the other end portions of each of the plurality of wires 21 are collectively led out from the wire lead-out portion 28. According to this structure, the inclined portion 52 has a plurality of slits 36 corresponding to each of the plurality of wires 21. Therefore, the assembly properties of each wire 21 can be improved.

[0073] (11) The first displacement limiting portion 71 is provided corresponding to the first slit 36a which is closest to the electric wire lead-out portion 28 among the plurality of slits 36. Furthermore, the first displacement limiting portion 71 has an insertion portion 73 which is inserted into the first slit 36a, and does not have the inner wall portion 75 which the second displacement limiting portion 72 has. The electric wire 21 led out from the first slit 36a is arranged near the bottom wall 32 of the electric wire storage portion 31, so the electric wire 21 is not likely to float in a direction away from the bottom wall 32. Therefore, in the first slit 36a, it is not likely that the electric wire 21 is sandwiched between the inclined portion 52 and the first displacement limiting portion 71, so omitting the inner wall portion 75 from the first displacement limiting portion 71 can help to ensure space in the electric wire storage portion 31.

[0074] (12) The second displacement restricting portion 72 is provided corresponding to the second slit 36b which is farthest from the electric wire leading-out portion 28 among the plurality of slits 36. The electric wire 21 led out from the second slit 36b is likely to float in a direction away from the bottom wall 32. Therefore, in the second slit 36b, the electric wire 21 is likely to rise to the position of the inclined portion 52. Therefore, by having the second displacement restricting portion 72 corresponding to the second slit 36b have the inner side wall portion 75, the inner side wall portion 75 can effectively prevent the electric wire 21 from being sandwiched between the inclined portion 52 and the second displacement restricting portion 72.

[0075] (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.

[0076] In the above-described embodiment, the second displacement restricting portion 72 may be replaced with the first displacement restricting portion 71 . In the above embodiment, the first displacement restricting portion 71 may be replaced with a second displacement restricting portion 72. That is, all the displacement restricting portions provided corresponding to the plurality of slits 36 may be replaced with the second displacement restricting portions 72 having the inner wall portions 75. According to this structure, in each slit 36, the inner wall portions 75 can prevent the electric wire 21 from being caught by the inclined portion 52 and the second displacement restricting portion 72.

[0077] In the above embodiment, the number of sensor housing portions 30 and the number of corresponding slits 36 are set to two, but the present invention is not limited thereto. The number of sensor housing portions 30 and the number of corresponding slits 36 may be set to one or three or more, respectively.

[0078] The shape of the second displacement limiting portion 72 is not limited to the above-described embodiment. For example, the insertion portion 73 may be omitted from the second displacement limiting portion 72 of the above-described embodiment, and the second displacement limiting portion 72 may be formed only by the plate-shaped inner side wall portion 75. In addition, the first displacement limiting portion 71 may be formed only by the plate-shaped inner side wall portion 75.

[0079] The first displacement restricting portion 71 and the second displacement restricting portion 72 of the above embodiment are provided at positions that block a portion of the slit 36. However, in addition to this, for example, the first displacement restricting portion 71 and the second displacement restricting portion 72 may be provided at positions that do not block the slit 36 ​​in the wire storage portion 31. In addition, a displacement restricting portion that extends from the cover portion 70 and restricts displacement of the wire 21 in a direction approaching the cover portion 70 may be provided at a position corresponding to the opening portion 35.

[0080] In the above embodiment, the temperature sensor 60 is taken as an example as the electric component mounted on the housing 22 and engaged with the claw portion 43 , but the electric component may be a component other than the temperature sensor 60 .

[0081] In the above embodiment, one of the first contact portion 74a and the second contact portion 74b may be omitted. That is, the contact portion contacting the open end portion 33a of the first side wall 33 may be provided only on one side in the X direction in at least one of the first displacement restricting portion 71 and the second displacement restricting portion 72.

[0082] The end surface shape of the slit 36 ​​at the inclined portion 52 viewed from the Y direction may be changed to, for example, a curved shape. The inclined portion 52 may be omitted from each slit 36 ​​, and each slit 36 ​​may be formed only by the straight portion 51 .

[0083] The sensor housing portion 30 in the above embodiment is provided across the first bus bar holding portion 26 a and the second bus bar holding portion 27 a , but the arrangement position of the sensor housing portion 30 in the housing 22 is not particularly limited to the above embodiment.

[0084] The cover 25 may be formed integrally with the housing 22 . 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

[0085] 10 Battery wiring module 11. Battery 12 Battery Cells 12a Upper surface 13 Module mounting surface 14 Battery Terminals 21 Wire 22 Housing 23 Busbar 24 Connectors 25 Cover 26 (26a, 26b) First bus bar holding portion 27 (27a, 27b) Second bus bar holding portion 28 Wire lead-out section 30 Sensor storage area 31 Wire storage area 32 bottom wall 33 1st side wall 33a Open end 33b Locking protrusion 34 Second side wall 34a Open end 35 Opening 36 Slit 36a 1st slit (slit) 36b 2nd slit (slit) 37 Opposing wall 38 Spring support 41 retaining sheet 42 Extension 43 Claw (engaging part) 51 Straight Line 52 inclined part 60 Temperature sensor (electrical component) 60a Temperature detection surface 61 Spring member 70 cover 70a Locking portion 71 First displacement limiting portion (displacement limiting portion) 71a Top 72 Second displacement limiting portion (displacement limiting portion) 72a Top end 73 Insertion 74a First contact portion (contact portion) 74b Second contact portion (contact portion) 75 inner wall X Direction Y direction (the direction in which the engaging portion and the slit face each other, and the direction in which the first side wall and the second side wall face each other) Z direction

Claims

1. A battery wiring module, which can be installed on a battery, The battery wiring module comprises: an electric wire electrically connected to the battery; a housing having a wire storage portion for storing the wires; and a cover having a lid portion covering the wire storage portion, The cover has a displacement restricting portion extending from the cover portion, The displacement restricting portion restricts displacement of the electric wire in a direction approaching the cover portion.

2. The battery wiring module according to claim 1, wherein: The wire storage portion has a slit for leading out the wires. The displacement restricting portion is configured to block a portion of the slit.

3. The battery wiring module according to claim 2, wherein: The housing has a snap-fitting portion, and the snap-fitting portion snaps into the electrical component mounted on the housing. The engaging portion is disposed at a position on the outside of the wire storage portion facing the slit. When viewed in the opposing direction of the engagement portion and the slit, the position of the tip end portion of the displacement restricting portion is located farther from the cover portion than the engagement portion.

4. The battery wiring module according to claim 2 or 3, wherein: The wire storage portion includes a bottom wall and a first side wall and a second side wall extending from the bottom wall and facing each other. The ends of the first side wall and the second side wall on the side opposite to the bottom wall are respectively opened ends, and the cover covers the open ends of the wire storage portion. The slit is provided on the first side wall so as to extend from the open end to an end connected to the bottom wall.

5. The battery wiring module according to claim 4, wherein: The cover has a contact portion that contacts the open end portion of the first side wall.

6. The battery wiring module according to claim 5, wherein: The contact portion includes a first contact portion and a second contact portion provided on both sides sandwiching the displacement restricting portion.

7. The battery wiring module according to any one of claims 4 to 6, wherein: The displacement restricting portion has an insertion portion inserted into the slit.

8. The battery wiring module according to any one of claims 4 to 7, wherein: The slit has an inclined portion whose width increases toward the open end portion of the first side wall.

9. The battery wiring module according to claim 8, wherein: The displacement restricting portion has an inner wall portion located on the inner side of the wire housing portion, The inner wall portion is provided at a position overlapping the inclined portion when viewed from a direction in which the first side wall and the second side wall are opposed.

10. The battery wiring module according to claim 8, wherein: The slit having the inclined portion is one of a plurality of slits provided in the housing along the length direction of the wire receiving portion. The displacement restricting portion is one of a plurality of displacement restricting portions provided on the cover corresponding to the plurality of slits, respectively. The wire storage portion has a wire lead-out portion at the end portion in the longitudinal direction. The wire is one of a plurality of wires, One end portion of each of the plurality of electric wires is independently led out from the plurality of slits, The other end portions of the plurality of electric wires are collectively led out from the electric wire leading portion.

11. The battery wiring module according to claim 10, wherein: The plurality of displacement limiting portions include a first displacement limiting portion and a second displacement limiting portion, The first displacement restricting portion includes an insertion portion inserted into a corresponding one of the plurality of slits. The second displacement restricting portion has an inner wall portion located on the inner side of the wire housing portion. The inner wall portion is provided at a position overlapping with the inclined portion when viewed from a direction in which the first side wall and the second side wall are opposed to each other. The first displacement restricting portion does not have the inner wall portion, The first displacement restricting portion is provided corresponding to a slit that is closest to the electric wire lead-out portion among the plurality of slits.

12. The battery wiring module according to claim 11, wherein: The second displacement restricting portion is provided corresponding to a slit farthest from the electric wire lead-out portion among the plurality of slits.

13. The battery wiring module according to claim 10, wherein: The plurality of displacement restricting portions each have an inner wall portion located on an inner side of the wire housing portion, The inner wall portion is provided at a position overlapping the inclined portion when viewed from a direction in which the first side wall and the second side wall are opposed.

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