Battery wiring module

Abstract

The problem to be solved by the present disclosure is to provide a battery wiring module that can suppress the incorrect assembly of the cover. The first cover (17a) has: a cover body (40) covering the wire insertion portion (18); a first locking portion (41) extending from the cover body (40) toward the shell body (16) and locked to the first locked portion (31) of the shell body (16); and a second locking portion (42) extending from the cover body (40) toward the shell body (16) and locked to the second locked portion (32) of the shell body (16). The length of the first locking portion (41) in the extension direction is set to be longer than the length of the second locking portion (42) in the extension direction. Furthermore, the shell body (16) has a first limiting portion (61), which abuts against the top end of the first locking portion (41) in the extension direction when the first locking portion (41) is about to be locked to the second locked portion (32) to limit the displacement of the first locking portion (41) in the assembly direction.

Description

Technical Field

[0001] The present disclosure 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 secondary battery that is installed as a power source for driving the vehicle. The battery wiring module of Patent Document 1 includes an electric wire electrically connected to the secondary battery and a shell that accommodates the electric wire. The shell of the battery wiring module includes: a shell body having an electric wire insertion portion through which the electric wire passes; and a cover covering the electric wire insertion portion. The cover of the battery wiring module of Patent Document 1 is configured as a separate body relative to the shell body. The cover has a locking portion that is respectively locked to a plurality of locked portions provided on the shell body in a direction along the opening direction of the electric wire insertion portion. The cover is assembled to the shell body by the locking of the locking portions of the cover and the locked portions of the shell body.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2014-229594 Summary of the Invention

[0006] Problems to be solved by the invention

[0007] In the battery wiring module housing described above, the cover's multiple locking portions properly engage with corresponding multiple locking portions of the housing body, allowing the cover to be assembled to the housing body in the proper orientation and position. However, if the cover's locking portions can engage with locking portions that are not proper locking portions, there is a possibility that the cover may be assembled with the wrong orientation or position.

[0008] Therefore, an object is to provide a battery wiring module that can suppress erroneous assembly of a cover.

[0009] Solutions to Problems

[0010] The battery wiring module of the present disclosure is assembled on a secondary battery, and the battery wiring module comprises: a wire electrically connected to the secondary battery; and a shell for accommodating the wire, the shell comprising: a shell body having a wire insertion portion through which the wire passes; and a cover covering the wire insertion portion, the cover being configured as a separate body relative to the shell body, the shell body having a first latching portion and a second latching portion, the cover comprising: a cover body portion covering the wire insertion portion; a first latching portion extending from the cover body portion to the The shell body side extends and is locked to the first locked part; and the second locking part extends from the cover main body to the shell body side and is locked to the second locked part, the length of the extension direction of the first locking part is set to be longer than the length of the extension direction of the second locking part, and the shell body has a limiting part, which abuts against the top end of the extension direction of the first locking part when the first locking part is about to be locked to the second locked part to limit the displacement of the first locking part in the assembly direction.

[0011] Effects of the Invention

[0012] According to the present disclosure, it is possible to provide a battery wiring module capable of suppressing erroneous assembly of a cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a perspective view of a battery wiring module according to an embodiment.

[0014] Figure 2 This is a plan view showing the battery wiring module of this embodiment with the cover removed.

[0015] Figure 3 This is an enlarged perspective view showing a portion of the battery wiring module of this embodiment in an enlarged manner.

[0016] Figure 4 This is an enlarged perspective view showing a portion of the battery wiring module of this embodiment in an enlarged manner.

[0017] Figure 5 It is a side view showing the structure near the first locking portion and the first locked portion in the battery wiring module of this embodiment.

[0018] Figure 6 It is a side view showing the structure near the second locking portion and the second locked portion in the battery wiring module of this embodiment.

[0019] Figure 7 It is a side view showing the structure near the third locking portion and the third locked portion in the battery wiring module of this embodiment.

[0020] Figure 8 This is a plan view showing an enlarged portion of a battery wiring module of this embodiment. DETAILED DESCRIPTION

[0021] [Description of Embodiments of the Present Disclosure]

[0022] First, embodiments of the present disclosure will be described below.

[0023] The battery wiring module disclosed herein,

[0024] [1] Assembled on a secondary battery, the battery wiring module comprises: an electric wire electrically connected to the secondary battery; and a shell for accommodating the electric wire, the shell comprising: a shell body having an electric wire insertion portion through which the electric wire passes; and a cover covering the electric wire insertion portion, the cover being configured as a separate body relative to the shell body, the shell body comprising a first latching portion and a second latching portion, the cover comprising: a cover body portion covering the electric wire insertion portion; a first latching portion extending from the cover body portion toward the shell body and latched to the first latching portion; and a second latching portion extending from the cover body portion toward the shell body and latched to the second latching portion, the length of the first latching portion in the extension direction being set to be longer than the length of the second latching portion in the extension direction, the shell body comprising a limiting portion, the limiting portion abutting against the top end portion of the first latching portion in the extension direction when the first latching portion is about to be latched to the second latching portion, thereby limiting the displacement of the first latching portion in the assembly direction.

[0025] According to this structure, if the first locking portion of the cover is about to be mistakenly locked to the second locked portion of the housing body, the top end of the first locking portion abuts the limiting portion of the housing body, thereby preventing the first locking portion from being locked to the second locked portion. This prevents the cover from being incorrectly assembled. In addition, the limiting portion is structured so as to abut the first locking portion itself. Therefore, there is no need to provide a separate portion on the cover to prevent the first locking portion and the second locked portion from being locked. As a result, the shape of the cover can be simplified.

[0026] [2] The shell body has a third latched portion, and the cover has a third latching portion. The third latching portion extends from the cover body toward the shell body and is latched to the third latched portion. In the direction along the insertion direction of the wire, the length of the first latching portion is set to be longer than the length of the third latching portion. The limiting portion is used as the first limiting portion. The shell body has a second limiting portion on the side of the third latched portion in the direction along the insertion direction of the wire. When the first latching portion is about to be latched to the third latched portion, the second limiting portion abuts against the first latching portion to limit the displacement of the first latching portion in the assembly direction.

[0027] According to this structure, when the first locking portion of the cover is about to be mistakenly locked to the third locked portion of the housing body, the first locking portion abuts the second limiting portion of the housing body, thereby preventing the first locking portion from being locked to the third locked portion. This further prevents incorrect assembly of the cover. In addition, the second limiting portion is structured to abut the first locking portion itself. Therefore, there is no need to provide a separate portion on the cover to prevent the first locking portion and the third locked portion from being locked. As a result, the shape of the cover can be simplified.

[0028] [3] The wire insertion portion includes a bottom wall portion and a pair of side wall portions extending from the bottom wall portion, a slit is provided in the side wall portion, and the cover includes a protrusion portion that fits into the slit.

[0029] According to this configuration, when the cover is assembled in an incorrect position or orientation, the protrusion of the cover abuts against the side wall of the case body, thereby preventing the cover from being incorrectly assembled.

[0030] [Details of the embodiments of the present disclosure]

[0031] Specific examples of the battery wiring module disclosed herein are described below with reference to the accompanying drawings. For ease of illustration, portions of the structure may be enlarged or simplified in each drawing. Furthermore, the dimensional ratios of various components may differ between the drawings. The present invention is not limited to these examples but is defined by the claims, which encompass all modifications within the meaning and scope of the claims.

[0032] like Figure 1 As shown, the battery wiring module 10 of this embodiment is assembled into, for example, a secondary battery BT, which is installed in an electric vehicle, hybrid vehicle, or the like. The secondary battery BT supplies power to the vehicle's traction motor (not shown). Furthermore, the secondary battery BT receives power from the traction motor and the generator motor depending on its charge state and the vehicle's operating status.

[0033] The secondary battery BT has a plurality of single cells C. The secondary battery BT is formed into, for example, a roughly rectangular parallelepiped shape by arranging the plurality of single cells C in one direction. The battery wiring module 10 is mounted on one side of the secondary battery BT. In addition, in the following description, the surface of the secondary battery BT on which the battery wiring module 10 is mounted is referred to as the upper surface, and the battery wiring module 10 side of the secondary battery BT is referred to as the upper side. In addition, the X-axis of the mutually orthogonal XYZ axes in the accompanying drawings represents the length direction (long side direction) X of the shell 12 of the battery wiring module 10, the Y-axis represents the width direction Y of the shell 12, and the Z-axis represents the height direction Z of the shell 12. The single cells C are arranged along the length direction X of the battery wiring module 10.

[0034] like Figure 1 and Figure 2 As shown, the battery wiring module 10 includes a plurality of wires 11 electrically connected to the secondary battery BT and a housing 12 for housing the wires 11. Figure 1 The electric wire 11 is omitted in the figure.

[0035] The battery wiring module 10 of this embodiment includes, for example, a plurality of bus bars 13 supported by a housing 12. For example, a plurality of bus bars 13 are arranged along the longitudinal direction X of the housing 12 on both sides of the housing 12 in the width direction Y. A positive electrode terminal and a negative electrode terminal (not shown) provided on the top surface of each cell C are connected to each bus bar 13.

[0036] like Figure 2 As shown, each bus bar 13 is electrically connected to a corresponding wire 11. Each wire 11 is inserted into the housing 12 along the longitudinal direction X. A portion of the plurality of wires 11 is led out of the housing 12 through a first wire lead-out portion 14 provided at one end of the housing 12 in the longitudinal direction X, and the remaining plurality of wires 11 is led out of the housing 12 through a second wire lead-out portion 15 provided at the other end of the housing 12 in the longitudinal direction X.

[0037] (Housing 12)

[0038] like Figure 1 As shown, the housing 12 includes a housing body 16 and a cover 17. The housing body 16 includes a wire insertion portion 18 through which the wire 11 passes. The wire insertion portion 18 is formed in a groove shape that is open on the upper side in the height direction Z. In addition, the wire insertion portion 18 extends along the longitudinal direction X of the housing 12. In addition, in the housing body 16 of the present embodiment, two wire insertion portions 18 are arranged in the width direction Y, for example. In addition, the housing body 16 has a plurality of connecting portions 19 that connect the two wire insertion portions 18 to each other. The cover 17 covers the top of the wire insertion portion 18. In the present embodiment, two covers 17 are provided corresponding to the two wire insertion portions 18, respectively. In addition, the cover 17 is configured as a separate body relative to the housing body 16. In addition, the housing body 16 and the cover 17 are made of synthetic resin, for example.

[0039] (Casing body 16)

[0040] like Figure 1 and Figure 2 As shown, the housing body 16 is formed into a structure that is divided into a plurality of parts in the longitudinal direction X of the housing 12. Figure 2This is a top view of the battery wiring module 10 with the cover 17 removed. The housing body 16 of this embodiment is divided into three sections along the longitudinal direction X of the housing 12. Specifically, the housing body 16 includes a pair of first housing bodies 21 and a second housing body 22 disposed between the pair of first housing bodies 21. The pair of first housing bodies 21 and the second housing body 22 are arranged side by side along the longitudinal direction X of the housing 12.

[0041] like Figure 2 As shown, each wire insertion portion 18 has a bottom wall portion 23 and a pair of side walls 24, 25 extending upward from the bottom wall portion 23. The pair of side walls 24, 25 are opposed to each other in the width direction Y of the housing 12. In addition, in each wire insertion portion 18, one side wall portion 24 is located on the inner side of the other side wall portion 25 in the width direction Y. Each wire insertion portion 18 is formed into a groove shape that opens on the upper side in the height direction Z by the bottom wall portion 23 and the side walls 24, 25. In each wire insertion portion 18, the wire 11 is inserted between the pair of side walls 24, 25. In addition, the bottom wall portion 23 and the pair of side walls 24, 25 are formed on each of the first housing body 21 and the second housing body 22, respectively.

[0042] Each wire insertion portion 18 includes a first locked portion 31, a second locked portion 32, a third locked portion 33, and a fourth locked portion 34. Each locked portion 31 to 34 is provided so as to protrude outward in the width direction Y from the outer surface of the side walls 24 and 25, for example.

[0043] In this embodiment, multiple first latched portions 31 are provided on the side wall portion 24 located inwardly of each wire insertion portion 18 in the width direction Y. Furthermore, multiple third latched portions 33 and one fourth latched portion 34 are provided on the side wall portion 24. Specifically, for example, one first latched portion 31 and one third latched portion 33 are provided on the side wall portion 24 of each first housing body 21. Furthermore, the fourth latched portion 34 and two first latched portions 31 are provided on the side wall portion 24 of the second housing body 22.

[0044] Multiple second latching portions 32 are provided on the sidewall portion 25 outside the width direction Y of each wire insertion portion 18. Furthermore, multiple third latching portions 33 and one fourth latching portion 34 are provided on the sidewall portion 25. Specifically, for example, one second latching portion 32 and one third latching portion 33 are provided on the sidewall portion 25 of each first housing body 21. Furthermore, a fourth latching portion 34 and two second latching portions 32 are provided on the sidewall portion 25 of the second housing body 22.

[0045] (Gai 17)

[0046] like Figure 1As shown, the pair of covers 17 that cover the pair of wire insertion portions 18 each include, for example, a plurality of first covers 17a and a second cover 17b. In this embodiment, each cover 17 includes a pair of first covers 17a and a second cover 17b positioned between the pair of first covers 17a in the longitudinal direction X. In other words, the housing 12 as a whole includes four first covers 17a and two second covers 17b. The first covers 17a are identical in shape. Furthermore, the two second covers 17b are identical in shape. Furthermore, the first covers 17a and the second covers 17b are separate components.

[0047] like Figure 1 and Figure 3 As shown, each first cover 17a includes a cover body 40 that covers the upper portion of the wire insertion portion 18. The cover body 40 is formed, for example, in a strip shape extending in the longitudinal direction X of the housing 12. Furthermore, each first cover 17a includes a first locking portion 41 that is locked to the first locked portion 31, a second locking portion 42 that is locked to the second locked portion 32, and a third locking portion 43 that is locked to the third locked portion 33. The first locking portion 41, the second locking portion 42, and the third locking portion 43 extend from the cover body 40 toward the housing body 16 in the height direction Z, i.e., downward.

[0048] In each first cover 17a, the first locking portions 41 are formed at both ends of the inner edge of the cover body 40 in the width direction Y, in the longitudinal direction X. Furthermore, in each cover body 40, the second locking portions 42 are formed at both ends of the outer edge of the cover body 40 in the width direction Y, in the longitudinal direction X. Specifically, the first locking portions 41 and the second locking portions 42 are arranged opposite each other in the width direction Y at both ends of the cover body 40 in the longitudinal direction X. Furthermore, for example, one third locking portion 43 is formed at each edge of the cover body 40 in the width direction Y, in the middle of the cover body 40 in the longitudinal direction X. The first to third locking portions 41 to 43 are respectively locked to the first to third locked portions 31 to 33 in a direction parallel to the opening direction of the wire insertion portion 18, i.e., in the height direction Z. Thus, the first cover 17a is assembled to the wire insertion portion 18.

[0049] Furthermore, in each first cover 17a, the first latching portion 41, which is latched to the first latched portion 31 of the second case body 22, is configured to be movable relative to the first latched portion 31 in the longitudinal direction X. Specifically, a gap is defined between the first latching portion 41 and the first latched portion 31 of the second case body 22 in the longitudinal direction X of the case 12. Similarly, in each first cover 17a, the second latching portion 42, which is latched to the second latched portion 32 of the second case body 22, is configured to be movable relative to the second latched portion 32 in the longitudinal direction X. Specifically, a gap is defined between the second latching portion 42 and the second latched portion 32 of the second case body 22 in the longitudinal direction X of the case 12. This allows relative movement of the first case body 21 and the second case body 22 in the longitudinal direction X, for example, when the secondary battery BT thermally expands.

[0050] like Figure 1 and Figure 4 As shown, each second cover 17b includes a cover body 50 that covers the upper portion of the wire insertion portion 18, and a fourth latching portion 51 that latches onto the fourth latched portion 34 of the wire insertion portion 18. The cover body 50 is, for example, formed in a strip shape along the longitudinal direction X of the housing 12. The fourth latching portion 51 extends from the cover body 50 toward the housing body 16 in the height direction Z, i.e., downward. Furthermore, for example, one fourth latching portion 51 is formed at each edge of the cover body 50 in the width direction Y, in the middle portion of the cover body 50 in the longitudinal direction X. Each fourth latching portion 51 latches onto each fourth latched portion 34 in a direction along the opening direction of the wire insertion portion 18, i.e., in the height direction Z. Thus, the second cover 17b is assembled to the wire insertion portion 18.

[0051] Here, if Figure 5 and Figure 6 As shown, the length L1 of the first locking portion 41 in the direction in which the first locking portion 41 extends, i.e., in the height direction Z, is set to be longer than the length L2 of the second locking portion 42 in the direction in which the second locking portion 42 extends, i.e., in the height direction Z. As a result, the top end 41a, i.e., the lower end portion, of the first locking portion 41 in the direction in which it extends is located below the lower end portion of the second locking portion 42. Furthermore, for example, the length L1 of each first locking portion 41 provided on the cover 17 is the same. Furthermore, for example, the length L2 of each second locking portion 42 provided on the cover 17 is the same.

[0052] like Figure 4 and Figure 6 As shown, a first restricting portion 61 is provided on the side wall portion 25 on the outside in the width direction Y of the wire insertion portion 18 near the lower side of the second locked portion 32 locked by the second locking portion 42. The first restricting portion 61 protrudes in the width direction Y from the outer surface of the side wall portion 25.

[0053] The first restricting portion 61 is configured so that when the second locking portion 42 is locked to the second locked portion 32, it does not abut against the second locking portion 42 in the height direction Z. On the other hand, when the first locking portion 41 is about to be locked to the second locked portion 32, when the first locking portion 41 is assembled to the second locked portion 32 from the lower side in the height direction Z, the top end 41a of the first locking portion 41 abuts against the first restricting portion 61 before the first locking portion 41 is locked to the second locked portion 32, and further displacement of the first locking portion 41 is restricted by the first restricting portion 61. In addition, the first restricting portion 61 also functions as a reinforcing rib that reinforces the side wall portion 25 in order to prevent the side wall portion 25 from tilting in the width direction Y.

[0054] like Figure 5 and Figure 7 As shown, the length L3 of the first locking portion 41 in the longitudinal direction X of the housing 12 is set to be longer than the length L4 of the third locking portion 43 in the longitudinal direction X. Furthermore, for example, the length L3 of each first locking portion 41 provided on the cover 17 is the same. Furthermore, for example, the length L4 of each third locking portion 43 provided on the cover 17 is the same.

[0055] like Figure 3 As shown, in each side wall portion 24, 25 of the wire insertion portion 18, a second limiting portion 62 is provided on both sides of the third locking portion 43 in the longitudinal direction X of the housing 12. The second limiting portion 62 protrudes from the outer surface of each side wall portion 24, 25 in the width direction Y. Figure 7 The second restricting portion 62 provided in the vicinity of the third engaged portion 33 of the side wall portion 24 is shown in the figure.

[0056] like Figure 3 and Figure 7 As shown, the second limiting portion 62 is provided at a position where it does not abut against the third locking portion 43 in the longitudinal direction X of the housing 12 when the third locking portion 43 is locked to the third locked portion 33. On the other hand, when the first locking portion 41 is to be locked to the third locked portion 33, when the first locking portion 41 is assembled to the third locked portion 33 from the lower side in the height direction Z, the first locking portion 41 abuts against the second limiting portion 62 before the first locking portion 41 is locked to the third locked portion 33, and further displacement of the first locking portion 41 is limited by the second limiting portion 62.

[0057] In addition, if Figure 6 and Figure 7As shown, the length L5 of the second locking portion 42 in the longitudinal direction X of the housing 12 is set to be longer than the length L4 of the third locking portion 43 in the longitudinal direction X. Therefore, when the second locking portion 42 is to be locked to the third locked portion 33, when the second locking portion 42 is assembled to the third locked portion 33 at the lower side in the height direction Z, the second locking portion 42 abuts against the second limiting portion 62 before the second locking portion 42 is locked to the third locked portion 33, and further displacement of the second locking portion 42 is limited by the second limiting portion 62.

[0058] Furthermore, the second restricting portion 62 provided on the side wall portion 25 on the outer side of the wire insertion portion 18 in the width direction Y also functions as a reinforcing rib to strengthen the side wall portion 25, thereby preventing the side wall portion 25 from collapsing in the width direction Y. Since the side wall portion 25 has openings 25a at positions corresponding to the bus bars 13 for allowing the wires 11 to pass toward the bus bars 13, it is difficult to ensure the rigidity of the side wall portion 25. Therefore, it is preferable to provide the second restricting portion 62 and the first restricting portion 61 provided on the side wall portion 25 with the function of reinforcing ribs in order to ensure the rigidity of the side wall portion 25.

[0059] like Figure 4 and Figure 8 As shown, a slit 63 is provided in each of the side walls 24 and 25 of each wire insertion portion 18 on one side of the fourth engaged portion 34 in the longitudinal direction X of the housing 12. The slit 63 is formed from the upper end of each of the side walls 24 and 25 along the height direction Z. Furthermore, in this embodiment, the slit 63 is provided in the second housing body 22.

[0060] On the other hand, the second cover 17b has a protrusion 64 near the fourth locking portion 51. The protrusion 64 extends downward from the cover body 50 in the same direction as the fourth locking portion 51. Furthermore, one protrusion 64 is formed, for example, on each of the two edges of the cover body 50 in the width direction Y. When the second cover 17b is assembled to the wire insertion portion 18 in the correct assembly orientation, each protrusion 64 engages with the slit 63. Furthermore, if the second cover 17b is not assembled in the correct orientation, the protrusion 64 interferes with the upper ends of the side walls 24 and 25.

[0061] The effects of this embodiment will be described.

[0062] (1) The housing body 16 has a first limiting portion 61. When the first locking portion 41 is about to be locked to the second locked portion 32, the first limiting portion 61 abuts against the top end 41a of the first locking portion 41 in the extension direction to limit the displacement of the first locking portion 41 in the assembly direction. According to this structure, when the first locking portion 41 of the first cover 17a is about to be mistakenly locked to the second locked portion 32 of the housing body 16, the top end 41a of the first locking portion 41 abuts against the first limiting portion 61 of the housing body 16, thereby preventing the first locking portion 41 from being locked to the second locked portion 32. In this way, incorrect assembly of the first cover 17a can be suppressed. In addition, the first limiting portion 61 is a structure that can abut against the first locking portion 41 itself. Therefore, it is not necessary to separately provide a portion on the cover for preventing the first locking portion 41 from being locked with the second locked portion 32 . As a result, the shape of the first cover 17 a can be simplified.

[0063] (2) The first cover 17a includes a third latching portion 43 that extends from the cover body 40 toward the housing body 16 and latches onto the third latched portion 33 of the housing body 16. In the direction along the insertion direction of the electrical wire 11, that is, in the longitudinal direction X of the housing 12, the length L3 of the first latching portion 41 is set to be longer than the length L4 of the third latching portion 43. The housing body 16 includes a second limiting portion 62 on the side of the third latched portion 33 in the longitudinal direction X of the housing 12. Furthermore, the second limiting portion 62 abuts against the first latching portion 41 when the first latching portion 41 is about to be latched onto the third latched portion 33, thereby limiting displacement of the first latching portion 41 in the assembly direction. According to this structure, when the first locking portion 41 of the cover is about to be mistakenly locked to the third locked portion 33 of the housing body 16, the first locking portion 41 abuts against the second limiting portion 62 of the housing body 16, thereby preventing the first locking portion 41 from being locked to the third locked portion 33. This further prevents incorrect assembly of the first cover 17a. In addition, the second limiting portion 62 is a structure that can abut against the first locking portion 41 itself. Therefore, it is not necessary to provide a separate portion on the cover to prevent the first locking portion 41 from being locked with the third locked portion 33. As a result, the shape of the first cover 17a can be simplified.

[0064] (3) The wire insertion portion 18 includes a bottom wall portion 23 and a pair of side walls 24 and 25 extending from the bottom wall portion 23. Furthermore, each of the side walls 24 and 25 is provided with a slit 63, and the second cover 17b includes a protrusion 64 that fits into the slit 63. With this configuration, when the second cover 17b is assembled in an incorrect position or orientation, the protrusion 64 of the second cover 17b abuts against the side walls 24 and 25 of the housing body 16, thereby preventing the second cover 17b from being incorrectly assembled.

[0065] This embodiment can be implemented with the following modifications: This embodiment and the following modifications can be implemented in combination with each other within a range that does not technically conflict.

[0066] The first engaging portion 41 and the first engaged portion 31 may have a reversed concave-convex relationship, with the convex first engaging portion 41 engaging with the concave first engaged portion 31. Alternatively, the second engaging portion 42 and the second engaged portion 32 may have a reversed concave-convex relationship, with the convex second engaging portion 42 engaging with the concave second engaged portion 32. Alternatively, the third engaging portion 43 and the third engaged portion 33 may have a reversed concave-convex relationship, with the convex third engaging portion 43 engaging with the concave third engaged portion 33. Alternatively, the fourth engaging portion 51 and the fourth engaged portion 34 may have a reversed concave-convex relationship, with the convex fourth engaging portion 51 engaging with the concave fourth engaged portion 34.

[0067] The number of case bodies in the case 12 is not limited to that in the above embodiment, and may be one, two, or four or more depending on the size of the secondary battery BT in the longitudinal direction X.

[0068] In the case 12 of the above embodiment, the cover 17 covering the wire insertion portion 18 is composed of a total of six first and second covers 17a and 17b. However, the number of covers is not limited to the above embodiment and may be appropriately changed according to the size of the secondary battery BT in the longitudinal direction X.

[0069] In the above embodiment, the electric wires 11 are routed along the longitudinal direction X of the housing 12 , which is along the arrangement direction of the cells C. However, alternatively, for example, the electric wires 11 may be routed along the width direction Y of the housing 12 .

[0070] Description of Reference Numerals

[0071] 10 Battery wiring module

[0072] 11 Wires

[0073] 12 Housing

[0074] 13 busbars

[0075] 14 1st wire lead-out portion

[0076] 15 Second wire lead-out section

[0077] 16 Shell body

[0078] 17 Cover

[0079] 17a Cover 1

[0080] 17b Cover 2

[0081] 18 Wire insertion part

[0082] 19 Connection

[0083] 21 1st shell body

[0084] 22 Second shell body

[0085] 23 bottom wall

[0086] 24 side wall

[0087] 25 side wall

[0088] 25a Opening

[0089] 31 First locked portion

[0090] 31. Stopped portion

[0091] 32 Second locked portion

[0092] 32 Stopped part

[0093] 33 Third locked portion

[0094] 33 Stopped part

[0095] 34 4th locked part

[0096] 34 Stopped part

[0097] 40 Cover body

[0098] 41 First locking portion

[0099] 41a Top

[0100] 42 Second locking portion

[0101] 43 Third stopper

[0102] 50 Cover body

[0103] 51 4th locking part

[0104] 61 1st Restriction Section (Restriction Section)

[0105] 62 Restriction Section 2

[0106] 63 Slit

[0107] 64 protrusion

[0108] BT secondary battery

[0109] C single battery

[0110] L1 length

[0111] L2 length

[0112] L3 length

[0113] L4 length

[0114] L5 length

[0115] X Length direction of the shell

[0116] Y shell width direction

[0117] Z Height direction of the shell

Claims

1. A battery wiring module assembled on a secondary battery, the battery wiring module comprising: an electric wire electrically connected to the secondary battery; and a housing for receiving the wires, The housing comprises: a housing body having a wire insertion portion through which the wire passes; and a cover covering the wire insertion portion, The cover is formed as a separate body relative to the housing body. The housing body has a first locked portion and a second locked portion. The cover comprises: a cover body portion covering the wire insertion portion; a first locking portion extending from the cover body portion toward the housing body side and locked to the first locked portion; and a second locking portion extending from the cover main body toward the housing main body and locked to the second locked portion, The length of the first locking portion in the extending direction is set to be longer than the length of the second locking portion in the extending direction. The housing body includes a restricting portion that contacts a distal end portion of the first locking portion in an extending direction when the first locking portion is about to be locked to the second locked portion, thereby restricting displacement of the first locking portion in an assembling direction.

2. The battery wiring module according to claim 1, wherein: The housing body has a third locked portion. The cover has a third locking portion, the third locking portion extending from the cover main body toward the housing main body and locked to the third locked portion. The length of the first locking portion is set to be longer than the length of the third locking portion in the direction along the insertion direction of the electric wire. The restricting portion is a first restricting portion, and the housing body has a second restricting portion on the side of the third locked portion in the direction along the insertion direction of the electric wire. The second restricting portion contacts the first locking portion when the first locking portion is about to be locked to the third locked portion, thereby restricting displacement of the first locking portion in the assembling direction.

3. The battery wiring module according to claim 1 or claim 2, wherein: The wire insertion portion includes a bottom wall portion and a pair of side walls extending from the bottom wall portion. A slit is provided on the side wall portion, The cover has a protrusion that fits into the slit.

Images