阅读说明：本技术 电池配线模块 (Battery wiring module ) 是由 佐藤洋 森亮太 矢板久佳 铃木政巳 泽井健太 于 2019-08-22 设计创作，主要内容包括：提供一种能够抑制端子的位置偏移的电池配线模块。壳体(11)具备端子收容部(40),该端子收容部(40)具有将模块侧端子(14)导入的开口并收容该模块侧端子(14)。端子收容部(40)具有作为限制模块侧端子(14)的移动的收容侧限制部的底部(41)、第三壁部(42c)。将端子收容部(40)的开口封闭的盖部(60)具有作为盖侧限制部的第一及第二限制壁部(63、64),该盖侧限制部在与底部(41)、第三壁部(42c)不同的位置限制模块侧端子(14)的移动。(Provided is a battery wiring module capable of suppressing positional deviation of terminals. The housing (11) is provided with a terminal housing part (40), and the terminal housing part (40) is provided with an opening for introducing the module side terminal (14) and houses the module side terminal (14). The terminal housing section (40) has a bottom section (41) serving as a housing-side restricting section that restricts the movement of the module-side terminal (14), and a third wall section (42 c). A cover (60) that closes the opening of the terminal housing (40) has first and second limiting walls (63, 64) that serve as cover-side limiting portions that limit movement of the module-side terminals (14) at positions different from the bottom (41) and the third wall (42 c).)

1. A battery wiring module includes:

a module-side terminal electrically connected to a bus bar connecting the battery terminals of the plurality of battery cells to each other;

a wire having the module-side terminal connected to one end thereof; and

a housing accommodating the electric wire and the module-side terminal, wherein,

the housing includes a terminal housing portion having an opening for introducing the module-side terminal and housing the module-side terminal,

the terminal receiving portion has a receiving-side regulating portion for regulating the movement of the module-side terminal,

the cover for closing the opening of the terminal receiving portion has a cover side regulating portion for regulating the movement of the module side terminal at a position different from the receiving side regulating portion.

2. The battery wiring module according to claim 1,

the terminal housing portion has an opening portion capable of exposing a tip end portion of the module side terminal to the outside, and the housing-side regulating portion capable of abutting against the module side terminal in an opening direction of the opening portion,

the lid has the lid-side regulating portion that can abut against the module-side terminal in a direction intersecting with an opening direction of the opening.

3. The battery wiring module according to claim 1,

the terminal receiving portion has a pin-shaped receiving-side regulating portion extending from a bottom thereof and insertable into a hole portion of the module-side terminal,

the lid has a lid-side regulating portion for regulating the module-side terminal from falling off from the housing-side regulating portion.

4. The battery wiring module according to any one of claims 1 to 3,

the cover is integrally formed with the housing.

Technical Field

The present invention relates to a battery wiring module.

Background

For example, in a vehicle such as an electric vehicle or a hybrid vehicle, a battery wiring module is mounted on a high-voltage secondary battery mounted as a power supply for driving the vehicle.

In the battery wiring module, a module-side terminal for voltage detection is connected to a bus bar that connects a plurality of battery cells constituting a secondary battery (see, for example, patent document 1). In the battery wiring module, the module-side terminals are fixed by the restricting portions (locking portions) provided in the terminal receiving portions that receive the module-side terminals.

Disclosure of Invention

Problems to be solved by the invention

However, the position of the terminal may be shifted only by the restriction portion provided in the terminal housing portion.

The present invention has been made to solve the above-described problems, and an object thereof is to provide a battery wiring module capable of suppressing positional displacement of terminals.

Means for solving the problems

The battery wiring module that solves the above problems includes: a module-side terminal electrically connected to a bus bar connecting the battery terminals of the plurality of battery cells to each other; a wire having the module-side terminal connected to one end thereof; and a housing that houses the electric wire and the module-side terminal, wherein the housing includes a terminal housing portion that has an opening into which the module-side terminal is introduced and houses the module-side terminal, and the housing includes a restricting portion that restricts movement of the module-side terminal in both the terminal housing portion and a lid portion that closes the opening of the terminal housing portion.

According to the above-described aspect, the restriction portion is provided in both the cover portion and the terminal accommodation portion, so that positional displacement of the terminal can be suppressed.

In the above battery wiring module, it is preferable that the case has a terminal receiving portion that receives the module-side terminal, the terminal receiving portion has an opening portion that can expose a tip end portion of the module-side terminal to the outside, and the receiving-side regulating portion that can be brought into contact with the module-side terminal in an opening direction of the opening portion, and the lid portion has the lid-side regulating portion that can be brought into contact with the module-side terminal in a direction intersecting the opening direction of the opening portion.

According to the above aspect, the housing-side regulating portion that can be brought into contact with the module-side terminal in the opening direction of the opening portion and the cover-side regulating portion that can be brought into contact with the module-side terminal in the direction intersecting the opening direction of the opening portion are provided, and therefore, the position displacement of the terminal can be suppressed by regulating the terminal from a plurality of directions.

In the above battery wiring module, it is preferable that the terminal receiving portion has the receiving-side regulating portion in a pin shape extending from a bottom portion thereof and insertable into the hole portion of the module-side terminal, and the lid portion has the lid-side regulating portion that regulates the module-side terminal from dropping off from the receiving-side regulating portion.

According to the above aspect, the pin-shaped housing-side regulating portion inserted into the hole portion of the module-side terminal and the cover-side regulating portion regulating the module-side terminal from coming off from the housing-side regulating portion can suppress the positional displacement of the module-side terminal in the extending direction of the pin shape and in the direction orthogonal to the extending direction.

In the above battery wiring module, it is preferable that the restricting cover is integrally formed with the case.

According to the above aspect, the lid is integrally formed with the housing, so that an increase in the number of components can be suppressed.

Effects of the invention

According to the battery wiring module of the present invention, positional displacement of the terminals can be suppressed.

Drawings

Fig. 1 is a perspective view of a battery wiring module according to an embodiment.

Fig. 2 is a perspective view showing a part of the battery wiring module in this embodiment.

Fig. 3 is a perspective view showing a part of the battery wiring module in this embodiment.

Fig. 4 is a plan view showing a part of the battery wiring module in this embodiment.

Fig. 5 is a cross-sectional view taken along line 5-5 of fig. 4.

Fig. 6 is a cross-sectional view taken along line 6-6 of fig. 4.

Fig. 7 is a perspective view showing a part of a battery wiring module in a modification.

Fig. 8 is a perspective view showing a part of the battery wiring module in this modification.

Fig. 9 is a perspective view showing a part of a battery wiring module in a modification.

Description of the reference symbols

10: battery wiring module

11: shell body

12. 14: module side terminal

13: electric wire

40: terminal housing part

40 a: opening of the container

41: bottom (accommodating side limiting part)

42 c: third wall part (accommodating side limiting part)

43: opening part

52: second flat plate part (tip part)

60: cover part

63: first restriction wall part (cover side restriction part)

64: second limiting wall part (cover side limiting part)

72: pin part (accommodating side limiting part)

73: extension cylinder (cover side limiting part)

76: extension part (cover side limiting part)

B1, B2: bus bar

C: a battery cell.

Detailed Description

Hereinafter, an embodiment of the battery wiring module will be described. In the drawings, a part of the structure is shown in an exaggerated or simplified manner in some cases for the sake of convenience of description. The dimensional ratios of the respective portions may be different from the actual ones.

As shown in fig. 1, the battery wiring module 10 is attached to the upper surface of the secondary battery BT having a substantially rectangular parallelepiped shape. The secondary battery BT is mounted on an electric vehicle, a hybrid vehicle, or the like, and supplies electric power to a motor for running of the vehicle. The secondary battery BT receives power supply from the traveling motor and the generating motor according to the state of charge and the operating state of the vehicle. In the following description, the X direction of the three directions X, Y, Z orthogonal to each other in fig. 1 is taken as the arrangement direction of the battery cells, the Y direction is taken as the width direction of the battery wiring module, and the Z direction is taken as the vertical direction.

The secondary battery BT includes a plurality of battery cells C, and a positive electrode terminal and a negative electrode terminal (not shown) of each battery cell C face the battery wiring module 10 side (upper side).

A plurality of battery cells C are arranged in the X direction. At this time, the battery cells C are arranged such that the positive electrode terminal and the negative electrode terminal as the battery terminals are alternately arranged in the direction of arrangement of the battery cells C, that is, the X direction. Each terminal is provided with bus bars B1, B2 that connect adjacent terminals, i.e., a positive electrode terminal and a negative electrode terminal, to each other. That is, the battery cells C are connected in series by the bus bars B1, B2. The bus bars B1 and B2 in this example are connected to the positive electrode terminal and the negative electrode terminal of each battery cell C by welding, for example.

The housing 11 is made of, for example, a resin member. The housing 11 has a wire housing portion 20 housing the wire 13 and terminal housing portions 30, 40 housing the module- side terminals 12, 14.

Such asThe module- side terminals 12 and 14 include flat plate-shaped terminal main bodies 12a and 14a and substantially cylindrical sleeve portions 12b and 14b continuous from the terminal main bodies 12a and 14 a. The sleeve portions 12b, 14b are electrically connected to the core wire of the electric wire 13. In addition, the module side end of this exampleThe terminal body 12a is formed in a substantially L-shape by projecting in the Y direction with respect to the X direction which is the longitudinal direction of the substantially cylindrical sleeve portion 12 b. On the other hand, the module-side terminals 14 are provided at the ends in the X direction, and the terminal main bodies 14a and the sleeve portions 14b are formed in a linear shape that is continuous in the X direction, which is the longitudinal direction of the sleeve portion 14 b. The module-side terminal 14 is connected to one of the power supply extraction bus bars B2 provided at both ends in the X direction. The power supply extraction bus bar B2 is connected to the positive electrode terminal or the negative electrode terminal of the battery cell C located at both ends in the X direction among the plurality of battery cells C. That is, the bus bar B2 on one side in the X direction is connected to the positive terminal of the cell C disposed close to the bus bar B2, and the bus bar B2 on the other side in the X direction is connected to the negative terminal of the cell C disposed close to the bus bar B2. Each bus bar B2 is formed in a substantially L-shape when viewed in the Z direction, and one end of the bus bar B2 extends in the X direction.

As shown in fig. 1, the wire housing portion 20 of the housing 11 is defined by a bottom 21 and a side wall 22 extending from an outer edge of the bottom 21 in the housing 11. The wire housing portion 20 has a plurality of recesses 23 and 24 in the arrangement direction of the plurality of battery cells C, and the recesses 23 and 24 are recessed in the width direction Y, which is a direction orthogonal to the arrangement direction of the plurality of battery cells C and a direction orthogonal to the stacking direction of the housing 11 with respect to the battery cells C. One terminal housing portion 30 is provided in each recess 23. Two terminal housing portions 30 are provided in the recess 24.

As shown in fig. 1, the terminal housing portions 30 of the housing 11 housed in the recesses 23, 24 are formed in a substantially rectangular parallelepiped shape elongated in the X direction.

Such as

As shown, the terminal housing portions 40 that house the module-side terminals 14 positioned at the ends in the X direction have bottom portions 41 and side walls 42 extending from outer edge portions of the bottom portions 41, as in the terminal housing portions 30.

The side wall 42 has a first wall portion 42a, a second wall portion 42b, and a third wall portion 42 c.

The first wall portion 42a and the second wall portion 42b are opposed to each other in the Y direction. The third wall portion 42c faces the X direction and is connected to the first wall portion 42a and the second wall portion 42 b. The third wall portion 42c has an elastic piece 42d cut and raised. An opening 43 is formed between the third wall portion 42c and the bottom portion 41, and a part of the terminal main body 14a of the module-side terminal 14 is exposed to the outside of the housing 11 through the opening 43.

The terminal main body 14a of the module-side terminal 14 includes a first flat plate portion 51, a second flat plate portion 52 as a distal end portion, and a step portion 53 having a step and connecting the flat plate portions 51, 52 to each other.

The first flat plate 51 is continuous from the sleeve portion 14b and has a substantially rectangular plate shape.

A pair of flange portions 51a are formed in the first flat plate portion 51, and the flange portions 51a are projected in a direction (Z direction) substantially orthogonal to the surface direction of the first flat plate portion 51 by, for example, bending. The flange portions 51a face each other in the Y direction.

The step portion 53 connects the distal end portion of the first flat plate portion 51 and the proximal end portion of the second flat plate portion 52 so as to form a step difference in the Z direction between the first flat plate portion 51 and the second flat plate portion 52, for example. In this example, the stepped portion 53 extends in a direction substantially perpendicular to the surface direction of the first flat plate portion 51 and the second flat plate portion 52.

The second flat plate portion 52 is formed in a substantially flat plate shape and is exposed to the outside through the opening 43. The second flat plate portion 52 is connected to the bus bar B1 by, for example, welding. Here, in a state where the module-side terminals 14 are accommodated in the terminal accommodating portions 40, the stepped portions 53 can abut against the bottom portion 41 and the third wall portions 42c (elastic pieces 42d) in the X direction, which is the opening direction of the opening portion 43. In addition, in a state where the module-side terminals 14 are accommodated in the terminal accommodating portions 40, the second flat plate portion 52 can abut against the third wall portions 42c (elastic pieces 42d) in the Z direction, which is a direction orthogonal to the opening direction. Therefore, the positional deviation of the module-side terminals 14 can be suppressed. That is, the bottom portion 41 and the third wall portion 42c function as the housing-side regulating portion.

The terminal housing portion 40 configured as described above has a lid portion 60 that closes the opening 40a above the terminal housing portion.

The lid portion 60 includes a substantially rectangular plate-shaped lid main body portion 61, an engaging portion 62, a first limiting wall portion 63, and a second limiting wall portion 64.

The cover 60 is formed integrally with the terminal receiving portion 40, i.e., is formed integrally with the housing 11. The lid portion 60 is configured to be able to cover the upper side (the side opposite to the bottom portion 41) in the Z direction of the terminal receiving portion 40 by a hinge portion 65 provided near the upper end portion (the side opposite to the bottom portion 41) of the first wall portion 42a of the terminal receiving portion 40. The hinge portion 65 is formed integrally with the terminal housing portion 40 and the cover portion 60, and is formed as a flexible portion thinner than the first wall portion 42a of the terminal housing portion 40 and the cover main body portion 61. The cover portion 60 is rotatable about a hinge portion 65 (a rotation axis in the X direction) between an open position shown in fig. 3 and a closed position shown in fig. 2.

Such as

As shown in fig. 6, the locking portion 62 is provided at the distal end edge (edge on the opposite side from the hinge portion 65) of the cover main body portion 61. The locking portion 62 is formed in a substantially U-shaped frame shape, has an engagement hole 62a at the center thereof, and is engageable with a protrusion 44 formed on the second wall portion 42b in a position opposite to the bottom portion 41. Thereby, the lid portion 60 can be maintained in the closed state.

The first limiting wall 63 is formed in a substantially U-shaped frame shape extending from an edge in the X direction to a direction substantially orthogonal to the lid main body portion 61. The first limiting wall 63 is formed such that, when the lid 60 is in the closed state, a distal end thereof extends in the X direction to a position overlapping the flange 51 a. Thus, the first regulating wall 63 can abut against the flange 51a in the X direction, and the module-side terminals 14 can be prevented from being displaced in the X direction. Further, since the first regulating wall 63 extends to the vicinity of the first flat plate 51, it can abut against the first flat plate 51 of the module-side terminal 14 in the Z direction, and positional displacement of the module-side terminal 14 in the Z direction can be suppressed.

The second limiting wall 64 is formed at a position facing the locking portion 62 in the Y direction. The second limiting wall portion 64 is formed at the same position as one of the pair of flange portions 51a in the Y direction. Therefore, the second regulating wall portion 64 can abut against the flange portion 51a in the Z direction, and positional displacement of the module-side terminals 14 in the Z direction can be suppressed. This can prevent the module-side terminals 14 (second flat plate portions 52) from falling out of the openings 43.

The operation of the present embodiment will be described.

The battery wiring module 10 of the present embodiment is disposed on a secondary battery BT having a plurality of battery cells C. The module- side terminals 12 and 14 of the battery wiring module 10 are connected to bus bars B1 and B2 that connect the positive and negative terminals of the battery cells C arranged in the X direction. One end of the electric wire 13 is connected to the module- side terminals 12 and 14, and the other end of the electric wire 13 is connected to a battery monitoring ECU, not shown. The battery monitoring ECU can monitor the voltage of the battery cell C.

In the case 11 of the battery wiring module 10, the module-side terminals 14 housed in the terminal housing portions 40 can abut against the bottom portion 41 and the third wall portion 42c provided in the terminal housing portions 40 or abut against each other in the X direction and the Z direction, thereby restricting the movement of the module-side terminals 14. Similarly, the module-side terminals 14 can abut against the first and second limiting wall portions 63 and 64 of the lid portion 60 in the X direction and the Z direction to limit the movement of the module-side terminals 14.

The effects of the present embodiment will be described.

(1) By providing the bottom portion 41, the third wall portion 42c, and the first and second limiting wall portions 63 and 64 as the limiting portions in both the terminal housing portion 40 and the cover portion 60, positional displacement of the module-side terminals 14 can be suppressed.

(2) The opening portion 43 has a bottom portion 41 and a third wall portion 42c as a housing-side regulating portion capable of abutting on the module-side terminal 14 in the opening direction of the opening portion 43, and first and second regulating wall portions 63 and 64 as cover-side regulating portions capable of abutting on the module-side terminal 14 in the direction intersecting with (orthogonal to) the opening direction of the opening portion 43. This can regulate the module-side terminals 14 from a plurality of directions, and can suppress the positional displacement of the module-side terminals 14.

(3) By configuring the lid portion 60 integrally with the housing 11, an increase in the number of components can be suppressed.

(4) Further, since the module-side terminals 14 are sandwiched between the lid portion 60 and the terminal receiving portions 40, the load on the module-side terminals 14 when the module-side terminals 14 are mounted can be suppressed, and deformation of the module-side terminals 14 can be suppressed. Thus, a hard resin material may be used as the housing 11.

The above embodiment can be modified and implemented as follows. The above-described embodiment and the following modifications can be implemented in combination with each other within a range not technically contradictory.

In the above embodiment, the bottom portion 41 and the third wall portion 42c are used as the housing-side regulating portion, and the first and second regulating wall portions 63 and 64 are used as the cover-side regulating portion, but the present invention is not limited thereto. The configuration shown in fig. 7 and 8 may be adopted.

The module-side terminals 14 shown in fig. 7 and 8 have holes 71 in the first flat plate 51. The bottom portion 41 of the terminal housing portion 40 has a cylindrical pin portion 72 as a terminal side housing portion, and the pin portion 72 is inserted into the hole portion 71 and extends upward in the Z direction. By inserting the pin portions 72 into the holes 71 of the module-side terminals 14, the positional displacement of the module-side terminals 14 in the X direction and the Y direction can be suppressed.

The cover portion 60 has an extended tube portion 73 that extends from the cover body portion 61 and through which the pin portion 72 can be inserted. The lid portion 60 has two locking portions 74 and 75. Each of the locking portions 74 and 75 has substantially the same configuration as the locking portion 62 of the above-described embodiment, is formed in a substantially U-shaped frame shape, has an engagement hole 74a or 75a in the center thereof, and is engageable with the protrusion 44 formed on the second wall portion 42b and the first wall portion 42a in the vicinity opposite to the bottom portion 41. Thereby, the lid portion 60 can be maintained in the closed state. In this example, the cover 60 is formed separately from the terminal housing portion 40.

When the lid portion 60 is closed, the extended cylindrical portion 73 of the lid portion 60 extends from the lid body portion 61 to the Z-direction lower side (the module-side terminal 14 side), and the pin portion 72 is inserted through the insertion hole 73a inside thereof. At this time, the extending direction distal end portion of the extending tube portion 73 can abut against the module-side terminals 14. That is, the module-side terminals 14 can be prevented from coming off the pin portions 72 by the extension tube portions 73.

As described above, the positional displacement of the module side terminals 14 in the Z direction, the X direction, and the Y direction can be suppressed by the pin portions 72 as the pin-shaped terminal side receiving portions inserted through the holes 71 of the module side terminals 14 and the extended tube portions 73 as the cover side receiving portions that restrict the module side terminals 14 from coming off the terminal receiving portions 40.

In the above example, the pin portion 72 is illustrated as a cylindrical shape, but may be polygonal. Further, one pin portion 72 is provided, but a plurality of pin portions may be provided. When a plurality of pin portions 72 are provided, a plurality of pin portions 72 may be inserted into one extension tube portion 73, or the extension tube portion 73 may be provided in accordance with the number of the pin portions. The projecting amount of the pin portion 72 may be appropriately changed. For example, the cap body 61 may be provided with a communication hole communicating with the insertion hole 73a, and the pin portion may protrude (be exposed) from the communication hole to the outside.

In the above example, the terminal housing portion 40 and the cover portion 60 are configured as separate bodies, but the terminal housing portion 40 and the cover portion 60 may be configured as an integral body by the hinge portion 65 as shown in fig. 9.

As shown in fig. 9, the lid portion 60 has an extension portion 76 in the lid main body portion 61. The extension portion 76 has an opening portion 76a opening on the hinge portion 65 side and is configured to form a half-cylinder shape (half-pipe shape) having a substantially U-shape. By opening the opening 76a on the hinge portion 65 side, interference between the extension portion 76 and the pin portion 72 can be suppressed.

In the above embodiment, the cover 60 is provided in the terminal housing portion 40 located at the end in the X direction, but a cover may be provided in another terminal housing portion 30 to suppress positional displacement of each module-side terminal 12.

In the above-described embodiment, the second limiting wall portion 64 is provided corresponding to only one of the pair of flange portions 51a, but the second limiting wall portion 64 may be provided at a position corresponding to both of the pair of flange portions 51 a. In addition, at this time, the second limiting wall portions 64 may be connected to each other by a connecting wall portion flush with the second limiting wall portions 64. By providing this connecting wall portion, even when the second regulating wall portion 64 and the flange portion 51a are displaced in the Y direction, the connecting wall portion can come into contact with the flange portion 51a, and therefore, the positional displacement of the module-side terminals 14 in the Z direction can be suppressed.