Battery wiring module

Abstract

To provide a battery wiring module capable of effectively utilizing a space of a case.SOLUTION: The case 22 has a first extension piece 41 locked to a first locked part 71 provided on the battery. The case 22 has a sensor housing part 30 for housing a temperature sensor 60 for detecting the temperature of the battery 11. The temperature sensor 60 has a lead wire 62. Assuming that the battery side with respect to the first extension piece 41 is the lower side and the opposite side is the upper side, the lead wire 62 passes above the first extension piece 41.SELECTED DRAWING: Figure 4

Description

[Technical Field]

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

[0002] For example, as disclosed in Patent Document 1, a battery wiring module is attached to a high-voltage battery installed as a power source for driving vehicles such as electric vehicles and hybrid vehicles. The battery wiring module includes electric wires electrically connected to the battery and a case that houses the electric wires. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-89912 Summary of the Invention [Problem to be solved by the invention]

[0004] A temperature sensor with leads to detect the battery temperature may be installed in the case. When the battery wiring module is attached to the battery, the location of the temperature sensor leads may prevent effective use of the case space.

[0005] An object of the present disclosure is to provide a battery wiring module that enables effective use of the space in the case. [Means for solving the problem]

[0006] The battery wiring module of the present disclosure is a battery wiring module that is attached to a battery, and comprises an electric wire electrically connected to the battery and a case that houses the electric wire, wherein the case has an extension piece that engages with an engaging portion provided on the battery, and the case has a sensor accommodating portion that accommodates a temperature sensor for detecting the temperature of the battery, the temperature sensor having a lead wire, and when the battery side relative to the extension piece is considered the lower side and the opposite side is considered the upper side, the lead wire passes above the extension piece. [Effects of the Invention]

[0007] The battery wiring module of the present disclosure exhibits the effect of enabling effective use of space. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic plan view of a battery wiring module according to an embodiment. [Figure 2] FIG. 2 is a perspective view showing a part of the case of the battery wiring module of the same configuration. [Figure 3] FIG. 3 is a plan view showing a part of the case of the battery wiring module of the same configuration. [Figure 4] FIG. 4 is a cross-sectional view taken along line 4-4 in FIG. [Figure 5] FIG. 5 is a cross-sectional view illustrating the function of the first extension piece in the battery wiring module of the same configuration. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described. The battery wiring module of the present disclosure includes: [1] A battery wiring module to be attached to a battery, comprising: electric wires electrically connected to the battery; and a case for accommodating the electric wires; the case having an extension piece that engages with an engaging portion provided on the battery; the case having a sensor accommodating portion for accommodating a temperature sensor for detecting the temperature of the battery; the temperature sensor having a lead wire; and when the battery side relative to the extension piece is considered the lower side and the opposite side is considered the upper side, the lead wire passes above the extension piece.

[0010] According to this configuration, the lead wires of the temperature sensor pass through the space above the extension piece, making it possible to make effective use of this space. [2] In the above [1], the extension piece may have a first portion extending toward the battery, a second portion folded back from the first portion and extending away from the battery, and a locking portion provided on the second portion and locked to the locked portion.

[0011] According to this configuration, the extension piece that engages with the battery's latched portion can hold the case so that it does not separate from the battery. This makes it possible to prevent the case from floating up. Furthermore, the extension piece can bend due to the folded shape formed by the first and second portions, so the latching portion provided in the second portion can be easily latched with the latched portion. Furthermore, the first and second portions form a folded shape that is convex toward the battery. This makes it possible to secure space on the opposite side of the extension piece from the battery.

[0012] [3] In the above [2], the extension piece may have a first bending point set at the base end of the first portion and a second bending point set at the folded portion between the first portion and the second portion.

[0013] This configuration allows the extending piece to be more easily bent by the first bending point and the second bending point, which makes it easier for the locking portion provided in the second portion to be locked to the locked portion.

[0014] [4] In the above [3], when the battery side of the extension piece is the lower side and the opposite side is the upper side, the first bending point may be located above the locking portion, and the second bending point may be located below the locking portion.

[0015] With this configuration, when the case is assembled to the battery, the second portion bends around the second bending point toward the first portion. The first portion bends around the first bending point toward the latched portion. This causes the latched portion to bend downward, toward the battery, when engaging with the latched portion. This makes it easier to latch the latched portion of the extension piece to the latched portion.

[0016] [5] In the above [1], the extension piece may be a first extension piece, the engaging portion may be a first engaging portion, the case may have a second extension piece that engages with a second engaging portion provided on the battery, and the sensor accommodating portion may be provided between the first extension piece and the second extension piece.

[0017] With this configuration, the first and second extending pieces can hold the case against the battery on both sides of the sensor housing portion, thereby more effectively preventing the portion of the case including the sensor housing portion from lifting up.

[0018] [6] In the above [5], the locking portion of the first extending piece may be the first locking portion, and the second extending piece may have a third portion extending away from the battery, a fourth portion folded back from the third portion and extending toward the battery, and a second locking portion provided on the fourth portion and locked to the second locked portion.

[0019] With this configuration, the second extending piece can bend due to the folded shape formed by the third and fourth portions, making it possible to easily engage the second locking portion provided in the fourth portion with the second locked portion. Furthermore, because the lead wires of the temperature sensor pass above the first extending piece, even if space is not secured above the second extending piece, there is no effect on the placement of the lead wires. Therefore, the second extending piece can be constructed using the space above the second extending piece.

[0020] [Details of the embodiments of the present disclosure] Specific examples of the battery wiring module of the present disclosure will be described below with reference to the drawings. In each drawing, for ease of explanation, some of the configuration may be exaggerated or simplified. The dimensional ratios of each part may differ between drawings. In this specification, "facing" refers to surfaces or components facing each other, and includes not only cases where they are completely facing each other, but also cases where they are partially facing each other. In this specification, "facing" also includes both cases where a separate component is interposed between the two parts, and cases where nothing is interposed between the two parts.

[0021] As shown in Fig. 1, a battery wiring module 10 of this embodiment is attached to a battery 11 installed in, for example, an electric vehicle or a hybrid vehicle. The battery 11 is, for example, a secondary battery. The battery 11 supplies power to a traction motor of the vehicle (not shown). The battery 11 also receives power from the traction motor or the power generation motor depending on the state of charge and the operating state of the vehicle.

[0022] The battery 11 includes a plurality of battery cells 12. The battery 11 has, for example, a substantially rectangular parallelepiped shape due to the plurality of battery cells 12 being arranged 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 perpendicular to the X direction is referred to as the Y direction. The Z direction perpendicular to the X and Y directions is referred to as the up-down direction, and the side of the battery 11 on which the battery wiring module 10 is attached is referred to as the upper side. In other words, the battery 11 has a module attachment surface 13 on which the battery wiring module 10 is attached on its upper side. Note that, for convenience of explanation, the Z direction is referred to as the up-down direction, but this does not necessarily mean that the Z direction of the battery wiring module 10 is arranged to face the vertical direction.

[0023] 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 the battery cells 12 are aligned in the X direction, the two battery terminals 14 are aligned along the Y direction on the top surface of the battery cell 12.

[0024] (Configuration of battery wiring module 10) The battery wiring module 10 includes a plurality of electric wires 21 electrically connected to the batteries 11 and a case 22 that houses the electric wires 21. The battery wiring module 10 also includes, for example, a plurality of bus bars 23 supported by the case 22. The bus bars 23 are arranged, for example, on both sides of the case 22 in the Y direction, in a row along the X direction. Each bus bar 23 connects battery terminals 14 adjacent to each other in the X direction. The bus bars 23 are connected to the battery terminals 14 by, for example, welding. Each bus bar 23 is electrically connected to a corresponding electric wire 21. The bus bars 23 form a conductive path together with the electric wires 21. The electric wires 21 are, for example, voltage detection wires for detecting the voltage of the bus bars 23. Each electric wire 21 is connected to a connector 24 for connection to a voltage detection device (not shown). The battery wiring module 10 also includes a cover 25 that covers the upper part of the case 22.

[0025] (Configuration of Case 22) The case 22 is formed of an insulating material such as synthetic resin. The case 22 has a first bus bar holding portion 26 and a second bus bar holding portion 27. The first bus bar holding portion 26 and the second bus bar holding portion 27 have different shapes. A plurality of the first bus bar holding portions 26 and the second bus bar holding portions 27 are arranged alternately in the X direction. Two rows of the first bus bar holding portions 26 and the second bus bar holding portions 27 are provided corresponding to the two rows of the bus bars 23 arranged in the X direction. A pair of the first bus bar holding portion 26 and the second bus bar holding portion 27 adjacent to each other in the X direction holds one bus bar 23. Each bus bar 23 is arranged so as to straddle the first bus bar holding portion 26 and the second bus bar holding portion 27 adjacent to each other in the X direction.

[0026] The case 22 has a sensor housing portion 30. The sensor housing portion 30 houses a temperature sensor 60 for detecting the temperature of the battery 11. 2 and 3 are views showing the vicinity of the sensor accommodating section 30 in the case 22. The case 22 has an electric wire accommodating section 31 extending in the X direction. The electric wire accommodating section 31 has a bottom wall 32 and a pair of side walls 33, 34 facing each other in the Y direction. The lower surface of the bottom wall 32 faces the module mounting surface 13 in the Z direction. The side walls 33, 34 extend upward from the bottom wall 32. The electric wire 21 is accommodated between the pair of side walls 33, 34 in the Y direction. Of the pair of side walls 33, 34, the side wall located on the inner side in the Y direction is referred to as the side wall 33, and the side wall located on the outer side in the Y direction is referred to as the side wall 34. The first bus bar holding section 26 and the second bus bar holding section 27 are provided on the outer side in the Y direction of the electric wire accommodating section 31. The open upper side of the electric wire accommodating section 31 is covered by the cover 25.

[0027] The sensor accommodating portion 30 is formed so as to straddle one first bus bar holding portion 26 and one second bus bar holding portion 27 adjacent to each other in the X direction. Note that, hereinafter, the first bus bar holding portion 26 and the second bus bar holding portion 27 in which the sensor accommodating portion 30 is formed will be described as the first bus bar holding portion 26a and the second bus bar holding portion 27a, respectively. Furthermore, the first bus bar holding portion 26 adjacent to the second bus bar holding portion 27a in the X direction and located on the opposite side of the first bus bar holding portion 26a will be referred to as the first bus bar holding portion 26b. Furthermore, the second bus bar holding portion 27 adjacent to the first bus bar holding portion 26a in the X direction and located on the opposite side of the second bus bar holding portion 27a will be referred to as the second bus bar holding portion 27b. 3, the first bus bar holding portion 26 other than the first bus bar holding portions 26a and 26b is referred to as a first bus bar holding portion 26c, and the second bus bar holding portion 27 other than the second bus bar holding portions 27a and 27b is referred to as a second bus bar holding portion 27c.

[0028] As shown in FIG. 3 , the first bus bar holding portions 26b, 26c and the second bus bar holding portions 27b, 27c extend outward in the Y direction from the wire accommodating portion 31. The first bus bar holding portion 26a and the second bus bar holding portion 27a extend outward in the Y direction from the sensor accommodating portion 30. A first opening 35 is provided in a side wall 34 of the wire accommodating portion 31 at a position corresponding to the second bus bar holding portions 27b, 27c. Furthermore, a second opening 36 is provided in a side wall 34 of the wire accommodating portion 31 at a position corresponding to the second bus bar holding portion 27a. The electric wire 21 is drawn outward in the Y direction from inside the wire accommodating portion 31 through the first opening 35 or the second opening 36.

[0029] (Configuration of sensor housing 30) 2 and 3, the case 22 has an opposing wall portion 37 that straddles the first bus bar holding portion 26a and the second bus bar holding portion 27a. The opposing wall portion 37 is provided on the outer side in the Y direction of the side wall 34 of the wire accommodating portion 31. The opposing wall portion 37 is, for example, parallel to the side wall 34. The opposing wall portion 37 faces the side wall 34 in the Y direction. The first bus bar holding portion 26a extends outward in the Y direction from the opposing wall portion 37.

[0030] The sensor accommodating portion 30 is provided between the side wall 34 and the opposing wall portion 37. The sensor accommodating portion 30 is also provided between the first bus bar holding portion 26a and the electric wire accommodating portion 31. The sensor accommodating portion 30 has a spring support portion 38. The spring support portion 38 is formed to connect the side wall 34 and the opposing wall portion 37.

[0031] As shown in FIG. 4, the sensor housing 30 houses a temperature sensor 60 and a spring member 61. The spring member 61 is provided between the temperature sensor 60 and the spring member 61. The spring member 61 biases 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 biasing force of the spring member 61 presses the temperature detection surface 60a of the temperature sensor 60 against the upper surface 12a of the battery cell 12.

[0032] The temperature sensor 60 has a lead wire 62 for transmitting a signal. For ease of explanation, the lead wire 62 is not shown in Figs. 2 and 3. The case 22 is provided with a holding claw 39 that holds the temperature sensor 60. The lead wire 62 is drawn out from the temperature sensor 60, passing above the holding claw 39. As shown in Fig. 2, the holding claw 39 is provided at the base end of the second bus bar holding portion 27a.

[0033] (Configuration of the first extension piece 41) As shown in FIG. 2, the case 22 has a first extension piece 41 and a second extension piece 51 on both sides of the sensor housing portion 30 in the X direction.

[0034] The first extending piece 41 is provided at the base end 28 of the first bus bar holding portion 26b. As shown in FIG. 4 , the first extending piece 41 has a first portion 42, a folded portion 43, a second portion 44, and a first locking portion 45. The first portion 42 extends downward in the Z direction from the base end 28 of the first bus bar holding portion 26b, which serves as a base. That is, the first portion 42 extends toward the battery 11. The second portion 44 is folded back from the first portion 42 and extends away from the battery 11. That is, the folded portion 43 is provided between the first portion 42 and the second portion 44. The second portion 44 extends upward in the Z direction from the folded portion 43. The first extending piece 41 has a generally U-shaped folded shape that convexly faces the battery 11, with the first portion 42, the folded portion 43, and the second portion 44. As a result, the first extending piece 41 is formed so as to be able to bend in the X direction.

[0035] The first locking portion 45 is provided on the second portion 44. The first locking portion 45 protrudes from the second portion 44 on the opposite side from the first portion 42 in the X direction. When the case 22 is attached to the battery 11, the first locking portion 45 is locked to a first locked portion 71 provided on the battery 11. The first locked portion 71 is a portion of the battery 11 that extends upward from the battery 11. For example, the first locking portion 45 is inserted into a locking hole 72 provided in the first locked portion 71. The first locking portion 45 is configured to be hooked onto the locking hole 72 upward in the Z direction. In this way, the first extension piece 41 holds the case 22 so that it does not separate from the battery 11 in the Z direction.

[0036] 4, the first extending piece 41 has a first bending point B1 set at the base end of the first portion 42 and a second bending point B2 set at the folded-back portion 43. The first bending point B1 is set at the base end of the first portion 42, i.e., at the portion where the first portion 42 is connected to the base end 28 of the first busbar holding portion 26b.

[0037] The first bending point B1 is provided above the first locking portion 45 in the Z direction. The second bending point B2 is provided below the first locking portion 45 in the Z direction. That is, the second bending point B2 is provided on the battery 11 side of the first locking portion 45, while the first bending point B1 is provided on the opposite side of the first locking portion 45 from the battery 11. More specifically, the first bending point B1 is provided above an imaginary plane P that is perpendicular to the Z direction and passes through the first locking portion 45, i.e., on the side opposite the battery from the imaginary plane P. The second bending point B2 is provided below the imaginary plane P, i.e., on the battery 11 side from the imaginary plane P.

[0038] The lead wire 62 of the temperature sensor 60 is drawn out from the temperature sensor 60 toward the first extending piece 41 in the X direction. The lead wire 62 passes above the holding claw 39 and the first extending piece 41. That is, the lead wire 62 passes through the open space above the first extending piece 41. The upper surface of the base end portion 28 of the first busbar holding portion 26b and the upper end of the holding claw 39 are set at the same position as each other in the Z direction. The upper end of the second portion 44 of the first extending piece 41 is positioned lower than the upper surface of the base end portion 28 and the upper end of the holding claw 39.

[0039] (Configuration of second extension piece 51) As shown in FIG. 2 , the second extension piece 51 is provided at the base end of the second bus bar holding portion 27b. The second extension piece 51 includes, for example, a third portion 52, a fourth portion 53, and a second locking portion 54. The third portion 52 extends upward in the Z direction from the base end of the second bus bar holding portion 27b. That is, the third portion 52 extends away from the battery 11. The fourth portion 53 is folded back from the upper end of the third portion 52 in a substantially U-shape and extends downward in the Z direction. That is, the fourth portion 53 is folded back from the third portion 52 and extends toward the battery 11. The substantially U-shape formed by the third portion 52 and the fourth portion 53 allows the second extension piece 51 to bend in the X direction. The case 22 also includes, for example, a connecting wall 55 connecting the second extension piece 51 to the side wall 34.

[0040] The second locking portion 54 protrudes in the X direction from the lower end of the fourth portion 53, for example. The second locking portion 54 protrudes from the fourth portion 53 on the opposite side from the third portion 52. When the case 22 is attached to the battery 11, the second locking portion 54 is locked to a second locked portion 81 provided on the battery 11. The second locked portion 81 is a portion of the battery 11 that extends upward from the battery 11. For example, the second locking portion 54 is inserted into a locking hole 82 provided in the second locked portion 81. The second locking portion 54 is configured to hook onto the locking hole 82 upward in the Z direction. In this way, the second extension piece 51 holds the case 22 so that it does not separate from the battery 11 in the Z direction.

[0041] Next, the deflection of the first extending piece 41 when the case 22 is attached to the battery 11 will be described. As shown in FIG. 5 , the case 22 including the first extension piece 41 is assembled to the battery 11 in an assembly direction D along the Z direction. In FIG. 5 , the first extension piece 41 in an unbent state is shown by a two-dot chain line, and the first extension piece 41 in a bent state upon contact with the first locking portion 71 is shown by a solid line. When the first locking portion 45 contacts the tip of the first locking portion 71 along the assembly direction D, the first extension piece 41 bends around the first bending point B1 and the second bending point B2. As described above, the second bending point B2 is located on the battery 11 side of the first locking portion 45, and the first bending point B1 is located on the opposite side of the first locking portion 45 from the battery 11. Therefore, as shown by the arrows in FIG. 5 , the rotational directions of the bending around the first bending point B1 and the bending around the second bending point B2 are opposite to each other. 5, the first portion 42 bends clockwise around the first bending point B1, and the second portion 44 bends counterclockwise around the second bending point B2. As the first portion 42 bends clockwise around the first bending point B1, the first locking portion 45 is displaced slightly downward when pressed by the first locked portion 71. This makes it easier for the first locking portion 45 to fit into the locking hole 72 of the first locked portion 71.

[0042] The operation of this embodiment will be described. When the case 22 is attached to the battery 11, the spring member 61, which applies a biasing force to the temperature sensor 60, applies a force to the spring support portion 38 of the sensor accommodating portion 30 in a direction pushing up the spring support portion 38. Here, the first extending piece 41 and the second extending piece 51, which are located on both sides of the sensor accommodating portion 30 in the X direction, are locked to the first locked portion 71 and the second locked portion 81, respectively. In other words, the force of the spring member 61 pushing up the spring support portion 38 can be received by the first extending piece 41 and the second extending piece 51. This makes it possible to prevent the sensor accommodating portion 30 from floating up from the battery 11 due to the force of the spring member 61.

[0043] The effects of this embodiment will be described. (1) The first extension piece 41 has a first section 42 extending toward the battery 11, a second section 44 folded back from the first section 42 and extending away from the battery 11, and a first locking section 45 provided on the second section 44 and locked to the first locked section 71. With this configuration, the first extension piece 41, which is locked to the first locked section 71 of the battery 11, can hold the case 22 so that it does not separate from the battery 11. This can prevent the case 22 from floating up. Furthermore, the first extension piece 41 can be bent due to the folded shape formed by the first section 42 and the second section 44. This allows the first locking section 45 provided on the second section 44 to be easily locked to the first locked section 71. Furthermore, the first section 42 and the second section 44 form a folded shape that convexly extends toward the battery 11. This can secure space on the opposite side of the first extension piece 41 from the battery 11.

[0044] (2) The first extending piece 41 has a first bending point B1 set at the base end of the first portion 42 and a second bending point B2 set at the folded portion 43 between the first portion 42 and the second portion 44. With this configuration, the first bending point B1 and the second bending point B2 make it possible to configure the first extending piece 41 to be more flexible. This makes it possible to more easily engage the first locking portion 45 provided on the second portion 44 with the first locked portion 71.

[0045] (3) When the battery 11 side of the first extension piece 41 is defined as the lower side and the opposite side as the upper side, the first bending point B1 is located above the first locking portion 45. The second bending point B2 is located below the first locking portion 45. With this configuration, when the case 22 is assembled to the battery 11, the second portion 44 bends around the second bending point B2 in a direction toward the first portion 42. The first portion 42 bends around the first bending point B1 in a direction away from the first locked portion 71. As a result, the first locking portion 45 is displaced downward, i.e., toward the battery 11, when engaging with the first locked portion 71. This makes it easier for the first locking portion 45 to fit into the locking hole 72 of the first locked portion 71. Therefore, by adjusting the positional relationship between the first locking portion 45, the first bending point B1, and the second bending point B2 as described above, it is possible to suitably lock the first locking portion 45 to the first locked portion 71.

[0046] (4) The case 22 has a sensor housing portion 30 that houses a temperature sensor 60 for detecting the temperature of the battery 11. The temperature sensor 60 has a lead wire 62. The lead wire 62 passes above the first extension piece 41. With this configuration, the lead wire 62 of the temperature sensor 60 passes through the space above the first extension piece 41, making it possible to effectively utilize that space.

[0047] (5) The case 22 has a second extending piece 51 that is engaged with a second engaging portion 81 provided on the battery 11. The sensor accommodating portion 30 is provided between the first extending piece 41 and the second extending piece 51. With this configuration, the first extending piece 41 and the second extending piece 51 can hold the case 22 on both sides of the sensor accommodating portion 30 so that it does not separate from the battery 11. This makes it possible to more effectively prevent the portion of the case 22 that includes the sensor accommodating portion 30 from floating up.

[0048] (6) The second extension piece 51 has a third section 52 extending away from the battery 11 and a fourth section 53 folded back from the third section 52 and extending toward the battery 11. The second extension piece 51 also has a second locking section 54 provided at the fourth section 53 and locked to the second locked section 81. With this configuration, the second extension piece 51 can bend due to the folded shape formed by the third section 52 and the fourth section 53, making it possible to easily lock the second locking section 54 provided at the fourth section 53 to the second locked section 81. Note that because the lead wire 62 of the temperature sensor 60 passes above the first extension piece 41, the placement of the lead wire 62 is not affected even if no space is provided above the second extension piece 51. Therefore, the second extension piece 51 can be configured using the available space above.

[0049] (Example of change) This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility.

[0050] In the above embodiment, the second extending piece 51 may have the same configuration as the first extending piece 41. In the first extending piece 41 of the above embodiment, the base end portion of the first portion 42 and the first bending point B1 may be set below the imaginary plane P. That is, the base end portion of the first portion 42 and the first bending point B1 may be set below the first locking portion 45.

[0051] The projection-recess relationship in the locking structure between the first extending piece 41 and the first locked portion 71 may be reversed from that in the above embodiment. That is, a projection may be provided on the first locked portion 71, and a recess into which the projection fits and locks may be provided in the second part 44 as the first locking portion. Similarly, a projection may be provided on the second locked portion 81, and a recess into which the projection fits and locks may be provided in the fourth part 53 as the second locking portion.

[0052] In the above embodiment, the first extension piece 41 and the second extension piece 51 are provided on both sides of the sensor accommodating section 30 in the X direction, but in addition, for example, the first extension piece 41 and the second extension piece 51 may be provided on both sides of the sensor accommodating section 30 in the Y direction.

[0053] In the above embodiment, the second extending piece 51 may be omitted. In the above embodiment, the sensor accommodating portion 30 is provided across the first bus bar holding portion 26a and the second bus bar holding portion 27a, but the position of the sensor accommodating portion 30 in the case 22 is not particularly limited to that in the above embodiment.

[0054] The embodiments and modifications disclosed herein are illustrative in all respects, and the present invention is not limited to these examples. That is, the scope of the present invention is defined by the claims, and it is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0055] 10 Battery wiring module 11 Batteries 12 battery cells 12a Top side 13 Module mounting surface 14 Battery terminal 21 Electric wire 22 cases 23 Bus Bar 24 connectors 25 Cover 26 (26a, 26b, 26c) First bus bar holding portion (bus bar holding portion) 27 (27a, 27b, 27c) Second bus bar holding portion (bus bar holding portion) 28 Proximal end 30 Sensor housing 31 Wire housing section 32 Bottom wall 33,34 side wall 35 First opening 36 Second Opening 37 Opposing wall 38 Spring support 39 Holding claw 41 1st extension piece (extension piece) 42 Part 1 43 Folded section 44 Part 2 45 First locking portion (locking portion) 51 2nd extension piece 52 Part 3 53 Part 4 54 Second locking part 55 Connecting wall 60 Temperature Sensor 60a Temperature detection surface 61 Spring member 62 Lead wire 71 First locked part (locked part) 72 Locking hole 81 Second locked part 82 Locking hole B1 First bending point B2 Second bending point D Assembly direction P Virtual plane

Claims

1. A battery wiring module to be attached to a battery, an electric wire electrically connected to the battery; a case for accommodating the electric wire, the case has an extension piece that is engaged with an engaged portion provided on the battery, the case has a sensor housing portion that houses a temperature sensor for detecting the temperature of the battery, the temperature sensor has a lead wire; When the battery side of the extension piece is defined as the lower side and the opposite side is defined as the upper side, the lead wire passes through the upper side of the extension piece. Battery wiring module.

2. The extension piece has a first portion extending toward the battery, a second portion folded back from the first portion and extending away from the battery, and a locking portion provided on the second portion and locked to the locked portion. The battery wiring module according to claim 1 .

3. The extension piece has a first bending point set at a base end of the first portion and a second bending point set at a folded portion between the first portion and the second portion. The battery wiring module according to claim 2 .

4. When the battery side of the extension piece is defined as the lower side and the opposite side is defined as the upper side, the first bending point is provided above the locking portion, The second bending point is provided below the locking portion. The battery wiring module according to claim 3 .

5. The extending piece is a first extending piece, and the locked portion is a first locked portion, the case has a second extension piece that is engaged with a second engaged portion provided on the battery, The sensor accommodating portion is provided between the first extension piece and the second extension piece. The battery wiring module according to claim 1 .

6. The locking portion of the first extending piece is a first locking portion, The second extension piece has a third portion extending away from the battery, a fourth portion folded back from the third portion and extending toward the battery, and a second locking portion provided on the fourth portion and locked to the second locked portion. The battery wiring module according to claim 5 .

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