JP2015056351A - Wiring module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a space required for opening and closing a lid part.SOLUTION: A wiring module 14 includes an insulation protector 27 including a connection member holding part 28C which has an opening part 34 exposing a connection member 15C and holds the connection member 15C, and a lid part 35 which is disposed so as to cover at least a part of the opening part 34. The insulation protector 27 includes: a first hinge part 41 connected with the connection member holding part 28C; a second hinge part 42 connected with the lid part 35; and a connection part 43 which connects the first hinge part 41 with the second hinge part 42. The first hinge part 41 allows the connection part 43 to rotate relative to the connection member holding part 28C. The second hinge part 42 allows the lid part 35 to rotate relative to the connection part 43.

Description

  The present invention relates to a wiring module.

  A power storage module mounted on a vehicle such as an electric vehicle or a hybrid vehicle has a plurality of power storage elements arranged side by side. The plurality of power storage elements are connected in series or in parallel by connecting adjacent electrode terminals with a connecting member such as a bus bar.

The battery wiring module of Patent Document 1 includes an output bus bar having one end connected to an electrode terminal and the other end connected to the outside. The substantially entire upper surface of the output bus bar is an insulating material. It is covered with a lid made of
The lid portion is integrally formed with a protector main body portion that holds the bus bar and the voltage detection terminal via a hinge portion. Thus, the number of parts can be reduced by connecting the lid part and the protector body part via the hinge part as compared with the case where the lid part and the protector body part are separate parts.

JP 2012-256538 A

  By the way, although an electrical storage module is accommodated in the limited accommodation space of a vehicle, the case where the cover part of a wiring module is opened and closed after mounting | wearing to a vehicle can be considered. For example, there is a case in which an external connection portion connected to the outside is covered with a lid portion, and after the external connection portion is connected to an external terminal, the lid portion is closed to insulate the external connection portion from the outside. When opening and closing the lid after mounting in such a vehicle, in the configuration in which the lid and the protector main body are connected via the hinge as in Patent Document 1, the lid is rotated around the hinge. Therefore, it is necessary to make the accommodation space larger than the minimum space in which the power storage module can be mounted, and there is a problem that the request for downsizing of the vehicle cannot be met.

  The present invention has been completed based on the above circumstances, and an object of the present invention is to provide a wiring module capable of reducing the space required for opening and closing the lid.

  The wiring module of the present invention is a wiring module that is attached to a plurality of power storage elements having positive and negative electrode terminals and is housed in a housing space of the vehicle together with the plurality of power storage elements, and between the electrode terminals and the electrodes A connecting member that connects at least one of the terminal and an external terminal; an opening that exposes the connecting member; a connecting member holding portion that holds the connecting member; and at least part of the opening. An insulating protector having a lid portion arranged as described above, wherein the insulating protector includes a first hinge portion connected to the connection member holding portion, and a second hinge portion connected to the lid portion, A connecting portion that connects the first hinge portion and the second hinge portion, and the connection member holding portion and the connecting portion are rotated by the first hinge portion, and the connecting portion and the lid Between the pivots by the second hinge portion.

According to this configuration, since the first hinge portion rotates between the connection member holding portion and the connection portion, the lid portion connected to the connection portion can also be rotated together with the connection portion. The lid portion can be rotated with respect to the portion.
Here, in the rotation by the first hinge portion, the rotation radius of the lid portion becomes large. For example, there is a possibility that the lid portion cannot be opened and closed by interfering with a member facing the accommodation space of the vehicle. is there.
On the other hand, in this configuration, even when the rotation by only the first hinge portion interferes with the member facing the accommodation space of the vehicle, the connection between the connection portion and the lid portion is caused by the second hinge portion connected to the lid portion. Since the space rotates, it can be avoided that the lid part interferes with the member facing the accommodation space of the vehicle. Therefore, the space required for opening and closing the lid can be reduced.

It is preferable to have the following configuration as an embodiment of the above configuration.
-The 2nd hinge part is arranged in parallel with the 1st hinge part.
-When the 2nd hinge part closes the cover part, it rotates the cover part to the opposite side to the rotation direction of the connection part by the 1st hinge part.

-The said cover part covers at least one part of the said opening part which exposes the said connection member which connects between the said electrode terminal and external terminals.
-The said cover part covers the said connection member which connects between the said electrode terminal and external terminals.
If it does in this way, the operation | work which opens and closes a cover part in the state accommodated in the storage space of the vehicle, and connects with an external terminal can be performed.

  According to the present invention, it is possible to reduce the space required for opening and closing the lid.

The top view which shows the electrical storage module of embodiment Top view showing a plurality of power storage elements The perspective view which expands and shows the cover part side of an electrical storage module The side view which expands and shows the cover part side of an electrical storage module Plan view showing wiring module The figure which expanded the part which has a cover part of FIG. Side view of FIG. Side view for explaining that interference of lid portion to member facing bending space of vehicle by bending second hinge portion is avoided Side view for explaining that lid part interferes with member facing housing space of vehicle as comparative example

<Embodiment>
An embodiment will be described with reference to FIGS.
The wiring module 14 of this embodiment is attached to the plurality of power storage elements 11 to constitute the power storage module 10. The power storage module 10 is used as a drive source for a vehicle such as an electric vehicle or a hybrid vehicle. In the following description, with respect to the front-rear direction, the lower side of FIG. 1 is the front, the upper side is the rear, the left-right direction is based on the direction of FIG.

(Power storage module 10)
As shown in FIG. 1, the power storage module 10 (the right side is omitted in FIG. 1) includes a plurality of power storage elements 11 and a wiring module 14 attached to the upper surface of the plurality of power storage elements 11.

  As shown in FIG. 2, each power storage element 11 has a pair of left and right electrode terminals 13A, 13B (a positive electrode 13A, a negative electrode) vertically from the upper surface of a flat rectangular parallelepiped main body 12 in which a power storage element (not shown) is accommodated. Is shown as 13B). Each of the electrode terminals 13A and 13B is a bolt protruding upward from a pedestal portion protruding from the main body portion 12, penetrates through the connection members 15A to 15C placed on the pedestal portion, and is screwed with a nut 44 as a fastening member. The connecting members 15A to 15C are fastened.

  A plurality (ten in the present embodiment) of power storage elements 11 are arranged in five rows in the front-rear direction (the minor axis direction on the top surface of the power storage element 11) and in two rows in the left-right direction (the major axis direction on the top surface of the power storage element 11). ing. The respective storage elements 11 are connected in series by being arranged so that the polarities of the adjacent electrode terminals 13A and 13B are opposite.

  The power storage module 10 is housed in a housing space S (see FIG. 8) provided inside the vehicle and outside the passenger compartment that is a boarding space. The accommodation space S is sized according to the power storage module 10.

(Wiring module 14)
As shown in FIG. 5, the wiring module 14 includes a plurality of connecting members 15 </ b> A to 15 </ b> C, a voltage detection terminal 18 overlaid on the connecting members 15 </ b> A to 15 </ b> C, and a synthetic resin insulation that holds the plurality of connecting members 15 </ b> A to 15 </ b> C. And a protector 27.

(Connecting members 15A to 15C)
The connection members 15A to 15C are made of metal such as copper, copper alloy, stainless steel (SUS), aluminum, and the like. The electrode connection members 15A and 15B that connect the electrode terminals 13A and 13B of the adjacent power storage elements 11 and electrodes An external connection member 15C that connects the terminal 13A and an external terminal is provided.

  The inter-electrode connection members 15A and 15B are plate-shaped, and a plurality of inter-electrode connection members 15A that connect between the electrode terminals 13A and 13B of different power storage elements 11 adjacent in the left-right direction, and different power storage adjacent in the front-rear direction. The electrode terminal 13A, 13B of the element 11 is connected, and the inter-electrode connection member 15B having a shorter length in the connection direction than the inter-electrode connection member 15A is provided.

  The interelectrode connection members 15A and 15B have a plate shape with a length corresponding to the dimension between the adjacent electrode terminals 13A and 13B. The interelectrode connecting member 15A is formed with a pair of through holes 15D having a perfect circular shape through which the electrode terminals 13A and 13B are inserted, and the interelectrode connecting member 15B has an oval shape that is long in the connecting direction of the interelectrode connecting member 15B. A pair of through-holes 15E are formed.

  As shown in FIG. 6, the external connection member 15C includes a plate-like electrode connection portion 16 connected to the electrode terminal 13A, and an external connection portion 17 connected to an external terminal (not shown).

  The electrode connecting portion 16 has a circular through hole 16A through which the electrode terminals 13A and 13B are inserted. The through hole 16A has an oval shape slightly longer in the front-rear direction. The external connection portion 17 includes a plate-like plate portion 17A that rises from the edge of the electrode connection portion 16, and a terminal portion 17B that protrudes in a bolt shape from the plate surface of the plate-like portion 17A. The terminal portion 17B is fixed to the plate-like portion 17A by being struck into a through hole of the plate-like portion 17A or being welded.

(Voltage detection terminal 18)
The voltage detection terminal 18 is made of metal such as copper, copper alloy, stainless steel (SUS), and aluminum, and is formed by punching and bending a thin metal plate with a press machine, and connecting members 15A to 15C. To be fastened by a nut 44 and a terminal lead-out part 21 which is connected to the terminal part of the electric wire W and is connected to the terminal part of the electric wire W. And.

  The fastened portion 19 has a flat plate shape, and a circular through hole 20 through which the electrode terminals 13A and 13B are inserted passes through the center portion. At the side edge portion of the terminal lead-out portion 21, a cutout portion 22 is formed by cutting out the side edge portion. A reinforcing protrusion 23 that protrudes from one surface side to the other surface side is formed at an intermediate portion in the width direction of the terminal lead-out portion 21.

  The electric wire W is a covered electric wire in which a conductor portion is covered with an insulating coating. The electric wire W is connected to a battery ECU (not shown). The battery ECU is equipped with a microcomputer, an element, and the like, and has a function for detecting the voltage, current, temperature, etc. of the electricity storage element 11 and controlling the charge / discharge of each electricity storage element 11. It is a thing of composition.

(Insulation protector 27)
The insulating protector 27 is made of an insulating synthetic resin and, as shown in FIG. 5, is connected to a plurality of connection member holding portions 28A to 28C that hold the plurality of connection members 15A to 15C, and the connection member holding portion 28A. And a connecting portion 46 that connects the member holding portion 28B.

(Connection member holding portions 28A to 28C)
The connection member holding portions 28A to 28C include connection member holding portions 28A and 28B that hold the interelectrode connection members 15A and 15B, and a connection member holding portion 28C that holds the external connection member 15C.
The connection member holding portions 28A to 28C are erected on the bottom plate so as to extend along the flat bottom plate (not shown) on which the connection members 15A to 15C are placed and the peripheral edges of the connection members 15A to 15C. A partition wall 31 that separates 15C from the outside is provided. A plurality of pressing pieces 32 that protrude inward and prevent the connecting members 15 </ b> A to 15 </ b> C from falling upward are formed at the base end of the partition wall 31.

  As shown in FIGS. 6 and 7, the connection member holding portion 28 </ b> C that holds the external connection member 15 </ b> C includes a rectangular tubular partition wall 31 </ b> A that surrounds the electrode connection portion 16. The front side of the partition wall 31A is a high wall portion 31B that is raised according to the height position of the terminal portion 17B. A first lid locking portion 33A protrudes from the outer side surface of the high wall portion 31B. 33 A of 1st cover latching | locking parts have an inclined surface which becomes low toward the back side from the front-end part which protrudes in a step shape. A second lid locking portion 33B is formed on the inner wall of the high wall portion 31B. The second lid engaging portion 33B has an inclined surface that becomes lower from the lower end protruding in a step shape toward the upper side.

  The upper end of the partition wall 31A is a rectangular tube-shaped opening 34 that exposes the upper surface of the connection member 15C to the outside. The opening 34 is covered with a lid 35 that is rotatably connected to the connection member holding portion 28C.

(Cover 35)
The lid portion 35 includes a box-shaped outer portion 36 that covers the external connection portion 17 side, and an inner portion 45 that extends to the right of the outer portion 36 and covers the electrode terminal 13A side (see FIG. 3). As shown in FIGS. 6 and 7, the outer portion 36 includes an upper surface portion 37, a rear wall portion 36 </ b> A, and left and right side wall portions arranged at a position higher than the height of the terminal portion 17 </ b> B when the lid 35 is closed. 38. The outer side wall 38 is provided with a deformable frame-like locked portion 38A that is locked to the first lid locking portion 33A. An inner locking portion 38 </ b> B is formed on the inner wall of the outer side wall portion 38. The inner locking portion 38B can be bent and deformed, and a locking hole through which a hole edge is locked penetrates the second lid locking portion 33B. The direction of the step between the first lid locking portion 33A and the second lid locking portion 33B is a direction orthogonal to each other.

  When the lid 35 is rotated to the closed position, the first lid locking portion 33A is locked to the locked portion 38A, and the second lid locking portion 33B is locked to the inner locking portion 38B. The lid part 35 is held in a closed state. At the end of the side wall portion 38, an overhanging portion 39 that projects outward is formed.

  Between the connection member holding portion 28 </ b> C and the lid portion 35, the first hinge portion 41 connected to the connection member holding portion 28 </ b> C, the second hinge portion 42 connected to the lid portion 35, and the first hinge portion 41. And a plate-like connecting portion 43 connected between the second hinge portion 42 and the second hinge portion 42. The second hinge part 42 is arranged in parallel with the first hinge part 41 and is arranged at a position away from the connection part 43 in the height direction. Thereby, the first hinge part 41 and the second hinge part 42 are in a state of being rotatable with respect to the plate-like connection part 43.

  The connection portion 43 has a rectangular plate shape that is long in the left-right direction. The first hinge portion 41 and the second hinge portion 42 are formed integrally with other portions, and both can be bent and deformed by being formed of a thin synthetic resin. One end side of the first hinge portion 41 is connected to the upper end edge of the rear end portion of the connection member holding portion 28 </ b> C as a pair, and the other end side is connected to the left and right ends of the lower end edge of the connection portion 43. One end side of the second hinge part 42 is connected to the left and right sides of the upper end edge of the connection part 43, and the other end side is connected to the left and right sides of the lower end edge (end part on the second hinge part 42 side) of the lid part 35. ing. The second hinge portion 42 is formed thinner than the first hinge portion 41 and has a larger width dimension.

  The connecting portion 46 includes a plurality of positioning portions 47 that are positioned by fitting the terminal lead-out portion 21 of the voltage detection terminal 18, and a wire passage groove 53 that is recessed in the surface of the connecting portion 46.

  The positioning portion 47 is fitted with the terminal lead-out portion 21, and includes a protrusion 48 that is fitted into the notch portion 22 and a pair of locking pieces 49 that regulate the detachment of the voltage detection terminal 18. From the positioning portion 47, the electric wire W is guided to the electric wire passage groove 53 through the groove portion. The wire passage groove 53 extends in the front-rear direction, and has a groove bottom and a pair of groove walls rising from the groove bottom. The wire passage groove 53 is also provided at the front end portion of the insulation protector 27 and extends along the connecting direction of the interelectrode connecting member 15A. The electric wire W connected to the terminal portion of the voltage detection terminal 18 is routed so as to pass through the electric wire passage groove 53 and guided to an external battery ECU or the like.

Next, opening and closing of the lid part 35 will be described.
An operation of connecting an external terminal to the external connection portion 17 is performed in a state where the power storage module 10 is accommodated in the vehicle accommodation space S and the lid portion 35 is opened (FIG. 7).
From this state, as shown in FIG. 8, the first hinge portion 41 is bent to rotate the connecting portion 43 in the clockwise direction of FIG. 8, so that the connecting portion 43 closes a part of the opening 34. The connection part 43 is moved. At this time, since the second hinge portion 42 is bent to the opposite side, the lid portion 35 hardly rotates.

  Next, the lid part 35 is rotated clockwise. Accordingly, the second hinge portion 42 that has been bent in the counterclockwise direction is restored, and the lid portion 35 is moved to the closed position that covers the opening portion 34 in the closed state. Thereby, the range in which the lid 35 rotates is limited to the range of the rotation radius R1 with the second hinge portion 42 as an axis, and does not interfere with the member I facing the accommodation space S of the vehicle.

Accordingly, as shown in the comparative example of FIG. 9, when the first hinge part 41 is rotated around the first hinge part 41 as in the configuration in which the second hinge part 42 is not provided and only the first hinge part 41 is rotated, The turning radius R2 (R2> R1) increases and interferes with the member I facing the vehicle accommodation space S. Therefore, in the configuration without the second hinge portion 42 as shown in FIG. 9, it is necessary to enlarge the accommodation space S so as not to interfere with the member I of the vehicle.
When the lid 35 is opened, the lid 35 is rotated counterclockwise with the second hinge 42 as an axis, and then the lid 35 with the first hinge 41 as an axis. By rotating the connecting portion 43 counterclockwise, the lid portion 35 can be moved to the open position without interfering with the member I of the vehicle.

According to the said embodiment, there exist the following effects | actions and effects.
According to the present embodiment, since the first hinge portion 41 can turn (turn) between the connection member holding portion 28 </ b> C and the connection portion 43, the lid portion 35 connected to the connection portion 43. Since it can also be rotated together with the connecting portion 43, the lid portion 35 can be rotated with respect to the connecting member holding portion 28C.
Here, in the rotation by the first hinge portion 41, the rotation radius of the lid portion 35 is increased. For example, the lid 35 is opened and closed by interfering with the member I facing the accommodation space S of the vehicle. There is a risk that it will not be possible.
On the other hand, according to the present embodiment, when the lid portion 35 is rotated only by the first hinge portion 41, the lid portion 35 is connected even if the lid portion 35 interferes with a member facing the accommodation space S of the vehicle. Since the connection between the connecting portion 43 and the lid portion 35 can be turned (turned) by the second hinge portion 42 thus made, the lid portion 35 interferes with the member I facing the accommodation space S of the vehicle. You can avoid that. Therefore, it is possible to reduce the accommodation space necessary for opening and closing the lid portion 35.

Moreover, the cover part 35 covers at least one part of the opening part 34 which exposes the external connection member 15C which connects between electrode terminal 13A, 13B and an external terminal.
If it does in this way, the operation | work which opens and closes the cover part 35 and connects with an external terminal in the state which accommodated the electrical storage module 10 in the accommodation space S of a vehicle can be performed.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the lid 35 covers the external connection member 15C, and the lid that covers the interelectrode connection members 15A and 15B is not shown, but covers the interelectrode connection members 15A and 15B. The lid is provided integrally with the insulation protector, and the first hinge part and the second hinge part are provided on the lid covering the interelectrode connecting members 15A and 15B to reduce the turning radius of the lid. Thus, interference with the member facing the accommodation space when the lid is opened and closed may be avoided. That is, what is necessary is just to provide the 1st hinge part and 2nd hinge part of the said embodiment in the any one or several cover part corresponding to connection member 15A-15C. Although connection of the electrode terminal 13B at the opposite end in series connection with the electrode terminal 13A having the external connection member 15C is not shown, it is connected to an external terminal similarly to the external connection member 15C. You may provide an external connection member, a cover part, a 1st hinge part, and a 2nd hinge part.

(2) Although the first hinge portion 41 and the second hinge portion 42 are connected by the plate-like connecting portion 43 in the above embodiment, the first hinge portion and the second hinge portion are connected. The connection portion may be deflectable similarly to the first hinge portion and the second hinge portion.

(3) In addition to the 1st hinge part 41 and the 2nd hinge part 42, another hinge part may be provided, and you may make it connect between a cover part and a connection member holding | maintenance part.
(4) In the above-described embodiment, the configuration in which the plurality of power storage elements 11 are connected in series has been described. However, the configuration is not limited thereto, and a configuration in which the plurality of power storage elements 11 are connected in parallel may be employed.

(5) In the above embodiment, the example in which the power storage element 11 is a battery has been described, but the power storage element 11 may be a capacitor or the like.
(6) The number of power storage elements 11 is not limited to the number in the above embodiment, and can be changed as appropriate. In addition, the shape of the wiring module 14 can be changed as appropriate according to the number of the power storage elements 11.
(7) In the above embodiment, the second hinge portion 42 rotates the lid portion 35 on the side opposite to the rotation direction of the connecting portion 43 by the first hinge portion 41 when the lid portion 35 is closed. However, the present invention is not limited to this, and the second hinge portion may be configured to rotate the lid portion on the same side as the rotation direction of the connecting portion by the first hinge portion when closing the lid portion.

10: Power storage module 11: Power storage elements 13A, 13B: Electrode terminal 14: Wiring modules 15A, 15B: Inter-electrode connection member (connection member)
15C: External connection member (connection member)
17: External connection part 27: Insulation protectors 28A to 28C: Connection member holding part 34: Opening part 35: Lid part 41: First hinge part 42: Second hinge part 43: Connection part

Claims (4)

A wiring module that is attached to a plurality of power storage elements having positive and negative electrode terminals, and is housed in a housing space of a vehicle together with the plurality of power storage elements,
A connecting member for connecting at least one of the electrode terminals and between the electrode terminal and an external terminal;
An insulating protector having an opening that exposes the connecting member and having a connecting member holding portion that holds the connecting member and a lid that is arranged to cover at least a portion of the opening;
The insulation protector is
A first hinge part connected to the connection member holding part;
A second hinge connected to the lid;
A connecting portion for connecting the first hinge portion and the second hinge portion;
A wiring module in which a portion between the connection member holding portion and the connection portion is rotated by the first hinge portion, and a portion between the connection portion and the lid portion is rotated by the second hinge portion. The wiring module according to claim 1, wherein the second hinge part is disposed in parallel with the first hinge part. 3. The wiring module according to claim 2, wherein the second hinge portion rotates the lid portion on a side opposite to a rotation direction of the connection portion by the first hinge portion when the lid portion is closed. The said cover part covers at least one part of the said opening part which exposes the said connection member which connects between the said electrode terminal and external terminals. Wiring module.

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