JP6149809B2 - Cover, wiring module, and cover manufacturing method - Google Patents

Description

  The present invention relates to a cover attached to an insulation protector, a wiring module, and a method for manufacturing the cover.

  Battery modules for vehicles such as electric vehicles and hybrid vehicles are arranged with a plurality of single cells having positive and negative electrode terminals, and the electrode terminals of adjacent single cells are connected by a connecting member such as a bus bar. By doing so, a plurality of single cells are connected in series or in parallel.

  Here, in order to simplify the attachment work of the connection member, the connection member is accommodated in a plurality of synthetic resin connection units, and the battery connection assembly in which the connection units are connected to each other is a single cell group including a plurality of single cells. It has been proposed to be attached to (see, for example, Patent Document 1).

  A cover that covers the insulation protector is attached to the battery connection assembly (insulation protector) attached to the unit cell group in order to insulate the electrode terminal, the connection member and the like from the outside and prevent damage.

JP 2011-8957 A

  By the way, in an insulation protector, the external connection member etc. for electrically connecting a cell group (electric storage element group) and another apparatus may be provided protruding to the cover side. In such a case, it is necessary to provide a hole in the cover for allowing the protruding external connection member (protruding member) to escape. As described above, when a cover provided with a hole for allowing the protruding member to escape is attached to an insulating protector that does not include the protruding member, there is a concern that insulation or the like of the electrode terminal or the connecting member cannot be achieved.

  In order to solve such a problem, it is conceivable to prepare a cover according to the shape of the insulation protector. However, if a cover is prepared according to the shape of the insulation protector, etc., the number of types of cover increases, and there is a concern that the cost of molds for molding the cover will increase and workability will decrease due to an increase in the number of parts. Is done.

  An object of this invention is to make the cover which covers the insulation protector attached to an electrical storage element group common.

  The present invention is a cover for covering an insulating protector attached to a power storage element group in which a plurality of power storage elements having positive and negative electrode terminals are arranged, and a cover main body having an opening, and a lid that can freely open and close the opening. And a cover.

  Moreover, this invention is a wiring module provided with the insulation protector attached to the electrical storage element group formed by arranging two or more electrical storage elements which have an electrode terminal of a positive electrode and a negative electrode, and the said cover.

  In the present invention, the cover that covers the insulation protector includes a cover body having an opening and a lid that can be opened and closed. Therefore, in this invention, when using as a cover which covers the insulation protector with which the protrusion member is distribute | arranged, what is necessary is just to use it as an open state (open state), and as a cover which covers the insulation protector without the protrusion member being arrange | positioned When used, the opening may be used in a closed state (closed state).

  Therefore, according to the present invention, it is possible to provide a cover that can be used for an insulation protector in which a protruding member is arranged as well as an insulating protector in which no protruding member is arranged. A cover that covers the protector can be shared.

In the present invention, the cover may have the following configuration.
The lid may be provided integrally with the cover body. With such a configuration, the number of parts can be reduced, and loss of the lid can be prevented.

You may provide the open latching part which latches the said cover part to the said cover main body in the state which opened the said opening part.
If the opening is opened when the lid is integrated with the cover main body, there is a concern that the lid may sway and collide with other members due to vibration, etc., and the lid is separate from the cover main body. If the opening is opened in this case, there is a concern that the lid may be lost.
Therefore, with the configuration as described above, the lid can be locked to the cover body even when the opening is open, so that the lid can be prevented from colliding with other members, and the lid Can be lost.

You may provide the closing latching part which latches the said cover part to the said cover main body in the state which closed the said opening part.
Even if the opening of the cover main body is closed by the lid, the opening may be opened due to vibration or the like. Therefore, with the above configuration, the lid is locked in a state in which the opening is closed, so that it is possible to prevent the opening from being opened due to vibration or the like.

  Furthermore, the present invention covers an insulating protector attached to a power storage element group in which a plurality of power storage elements having positive and negative electrode terminals are arranged, and has a cover body having an opening, and a lid that can freely open and close the opening. A molding process for molding the cover by injecting a resin into a molding space formed between a first molding die that moves in the mold opening direction and a second molding die. And the molding space is formed between a main body molding surface that forms the cover main body formed in the first molding die and the second molding die, respectively, and a lid molding surface that forms the lid portion. The lid molding surface is provided so as to intersect with the body molding surface, and the end of the lid molding surface does not overlap the end of the opening in the mold opening direction. Position A method for manufacturing a cover being.

  In the manufacturing method of the present invention, the cover is formed between the main body molding surface that forms the cover main body and the lid molding surface that forms the lid, formed on each of the first molding die and the second molding die. Molded by injecting resin into the formed molding space, the lid molding surface of the molding die is provided to intersect the molding surface of the main body, and the end of the lid molding surface is the end of the opening and the mold opening It is set at a position that does not overlap in the direction.

  Therefore, according to the manufacturing method of the present invention, after injecting the resin into the molding space, the cover of the present invention can be molded by opening the first mold and the second mold in the mold opening direction. No slide mold is required.

  ADVANTAGE OF THE INVENTION According to this invention, the cover which covers the insulation protector attached to an electrical storage element group can be made shared.

It is a fragmentary top view of the wiring module of Embodiment 1, Comprising: The figure which shows the part to which the 1st insulation protector was attached Front view of the wiring module in the part of FIG. Side view of the wiring module in the part of FIG. It is a partial top view of a wiring module, Comprising: The figure which shows the part to which the 2nd insulation protector was attached The front view of the wiring module in the part of FIG. Side view of the wiring module in the part of FIG. Partial plan view of the first insulation protector Partial front view of the first insulation protector Side view of the first insulation protector Partial plan view of the cover with the opening open Sectional drawing in the AA line of FIG. Partial plan view of the cover with the opening closed Sectional drawing in the BB line of FIG. Partial plan view of the cover immediately after molding Partial front view of cover immediately after molding Side view of cover immediately after molding Cross-sectional view explaining the molding process

<Embodiment 1>
Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS.
A power storage module (not shown) configured by attaching the wiring module 10 including the cover 30 of the present embodiment to a power storage element group (not shown) in which a plurality of power storage elements are arranged is, for example, an electric vehicle or a hybrid Used as a driving source for vehicles such as automobiles. In the drawings, only one member of the plurality of identical members may be given a reference numeral, and the reference numerals may be omitted for other identical members. Hereinafter, the vertical direction will be described with reference to FIG.

  In this embodiment, as a power storage element (not shown) constituting the power storage element group, an arbitrary power storage element such as a secondary battery, a capacitor, or a capacitor can be used as necessary. A secondary battery is used as the electricity storage device according to this embodiment.

  The power storage element has positive and negative electrode terminals protruding from a main body portion in which a power generation element (not shown) is accommodated. The plurality of power storage elements are arranged so that the polarities of the electrode terminals of adjacent power storage elements are opposite.

  Each electrode terminal includes, for example, a rectangular tube-shaped nut (not shown), and a through hole 21 of the connection member 20 is aligned with a screw hole formed through the center of the nut so that a shaft portion of the bolt (not shown). The insulating protector 11 is fixed by screwing together.

  The insulation protector 11 is a member that is attached to a power storage element group in which a plurality of power storage elements having positive and negative electrode terminals are arranged and electrically connects the power storage elements. A cover 30 that covers the insulation protector 11 is attached to the insulation protector 11.

  In this embodiment, as the insulation protector 11, the insulation protector 11 (first insulation protector 11A) including the external connection member 25 connected to the external device, and the insulation protector 11 (second insulation protector) not including the external connection member 25 are used. 11B) (see FIGS. 1 and 4). In the present embodiment, when the two types of insulation protectors 11 are described separately, the first insulation protector 11A and the second insulation protector 11B are used, and when both are described collectively, the insulation protector 11 is used.

  In the present embodiment, the first insulating protector 11A and the second insulating protector 11B are used for one power storage element group.

  The insulation protector 11 is made of an insulating resin, and as shown in FIG. 7, as shown in FIG. 7, a connection member holding portion 12 that houses a connection member 20 that connects between electrode terminals adjacent to the left and right, and a detection terminal disposed on the connection member holding portion 12. The terminal holding part 14 which hold | maintains 22 and the electric wire accommodating part 15 which accommodates the electric wire (not shown) connected to the detection terminal 22 are provided.

  The connection member holding part 12 of the first insulating protector 11A is formed with a rectangular connection member 20 having two through holes 21 and one through hole 27, as shown in FIGS. An external connection member 25 (projection member) having an external connection portion 28 protruding upward is accommodated.

  A connecting member holding portion 12 (not shown) of the second insulating protector 11B accommodates a rectangular connecting member 20 in which two through holes 21 are formed.

  The connection member 20 and the external connection member 25 are made of metal such as copper, copper alloy, stainless steel (SUS), and aluminum.

  The connecting member 20 has a plate shape with a length corresponding to the dimension between the electrode terminals, and two through holes 21 through which shaft portions of bolts connected to the electrode terminals are inserted are formed. The shape of the through hole 21 is an oval shape that is long in the left-right direction.

  The external connection member 25 is disposed on the connection member holding portion 12, and is connected to the terminal connection portion 26 having one through hole 27 through which the shaft portion of the bolt connected to the electrode terminal is inserted. And an external connection portion 28 protruding vertically upward. The shape of the through hole 27 formed in the terminal connection portion 26 is an oval shape that is long in the left-right direction, like the through hole 21 of the connection member 20. As shown in FIG. 3, an external connection terminal 29 connected to an external device is formed on the external connection portion 28 so as to protrude substantially perpendicular to the external connection portion 28.

  The connection member 20 is overlaid with a detection terminal 22 for detecting the voltage of the storage element. One bolt insertion hole 22 through which the shaft portion of the bolt is inserted is formed through the portion of the detection terminal 22 that overlaps the connection member 20. The bolt insertion hole 22 is overlapped with the through hole 21 of the connection member 20 to form one hole. A barrel portion 23 is formed at the end of the detection terminal 22, and a voltage detection wire is connected to the barrel portion 23 by crimping or the like. The electric wire is connected to a battery ECU (not shown). The battery ECU is equipped with a microcomputer, an element, etc., and has a well-known configuration having functions for detecting the voltage, current, temperature, etc. of the storage element and controlling the charge / discharge of each storage element. Is. A portion between the bolt insertion hole 22 and the barrel portion 23 of the detection terminal 22 is held by the terminal holding portion 14.

  The connection member holding portion 12 includes a bottom plate 12A on which the connection member 20 or the external connection member 25 is placed, and a rectangular tube-shaped accommodation wall 13 that surrounds the connection member 20 or the external connection member 25. Of the bottom plate 12A, the part into which the electrode terminal enters is an opening without the bottom plate 12A. A part of the housing wall 13 surrounding the connecting member 20 is open and continues to the terminal holding part 14 that holds the detection terminal 22.

  The housing wall 13 is set to a height that can prevent a tool or the like from coming into contact with the connection member 20 or the head of the bolt and causing a short circuit. A retaining protrusion 13A that prevents the connecting member 20 or the external connecting member 25 from coming off is formed on the housing wall 13.

  A cover locking projection 13B that locks the cover 30 protrudes outward on the outer surface of the storage wall 13 (the front and back walls of the insulation protector 11) arranged on the outside of the storage wall 13. Is provided.

  The terminal holding portion 14 is formed with a retaining portion 14A that prevents the detection terminal 22 from coming off. The wall of the terminal holding part 14 on the side of the electric wire housing part 15 is open, and the electric wire connected to the detection terminal 22 is led out to the electric wire housing part 15. The electric wire housing portion 15 is provided with an electric wire holding portion 16 that prevents the electric wire from jumping out.

  In the present embodiment, the cover 30 having the same shape is used for the two types of insulation protectors 11. As shown in FIGS. 1 and 10, the resin cover 30 includes a cover body 31 having an opening 32, and a lid 36 that can open and close the opening 32.

  As shown in FIGS. 2 and 5, a cover locking hole 33 for receiving the cover locking protrusion 13 </ b> B of the insulating protector 11 is provided on the side edge in the longitudinal direction of the cover body 31.

  The cover 30 has a configuration in which a lid portion 36 is provided integrally with the cover main body 31. Specifically, the lid portion 36 is connected to the cover body 31 via a hinge 34, and the opening portion 32 can be opened and closed by rotating the lid portion 36.

  The cover 30 is provided with open locking portions 35 and 37 for locking the lid portion 36 to the cover body 31 with the opening 32 open. Specifically, as shown in FIGS. 10 and 11, the upper surface of the cover main body 31 is formed with an open locking projection 35 that locks the lid 36 with the opening 32 open, while the lid 36. Is provided with an open locking hole 37 for receiving the open locking projection 35 of the cover body 31.

  The cover 30 is provided with closing locking portions 32A and 38 for locking the lid portion 36 to the cover body 31 with the opening 32 closed. Specifically, as shown in FIGS. 12 and 13, of the pair of side edges in the longitudinal direction of the lid portion 36, an opening of the cover body 31 is formed on a side edge opposite to the side edge connected to the hinge 34. Two closing locking pieces 38 for locking the lid portion 36 by being arranged so as to overlap below the opening edge 32A of the portion 32 are provided.

Next, a method for manufacturing the cover 30 will be described.
The manufacturing method of the cover 30 of this embodiment is a resin in the molding space 47 formed between the first molding die 41 and the second molding die 44 moving in the mold opening direction (the direction of the arrow X in FIG. 17). A molding step of molding the cover 30 by injecting

  As shown in FIG. 17, the first molding die 41 and the second molding die 44 are formed with body molding surfaces 42 and 45 that form the cover body 31 and lid molding surfaces 43 and 46 that form the lid portion 36. ing. Here, the main body molding surface 42 formed on the first molding die 41 is referred to as a first main body molding surface 42, and the main body molding surface 45 formed on the second molding die 44 is referred to as a second main body molding surface 45. The lid molding surface 43 formed on the first molding die 41 is referred to as a first lid molding surface 43, and the lid molding surface 46 formed on the second molding die 44 is referred to as a second lid molding surface 46.

  The molding space 47 includes main body molding surfaces (first main body molding surface 42 and second main body molding surface 45) formed on the first molding die 41 and the second molding die 44, respectively, and a lid molding surface (first lid portion). It is formed between the molding surface 43 and the second lid molding surface 46).

  In the first molding die 41 and the second molding die 44, the lid molding surface (the first lid molding surface 43, the second lid molding surface 46) is the main body molding surface (the first main body molding surface 42, the second main body molding). The end 48 of the lid forming surface is set at a position that does not overlap the end 32B of the opening 32 in the mold opening direction (arrow X direction).

  In the molding step, resin is injected into a molding space 47 formed between the first molding die 41 and the second molding die 44 and cured, and then the first molding die 41 and the second molding die 44 are moved along the arrows. Open the mold in the X direction. Here, when the end portion 48 of the lid portion molding surface overlaps the end portion 32B of the opening portion 32 in the mold opening direction, a slide mold that is pulled out in the arrow Y direction is necessary. Since the end 48 of the molding surface does not overlap the end 32B of the opening 32 in the mold opening direction, the cover 30 can be molded simply by opening the mold in the arrow X direction.

  In the present embodiment, the lid molding surfaces 43 and 46 of the first molding die 41 and the second molding die 44 are provided to be inclined downward from the main body molding surfaces 42 and 45. As shown in FIGS. 14 to 16, the lid portion 36 is inclined downward. If the lid portion 36 is inclined downward, the hinge 34 is unlikely to open unintentionally.

  The cover part 36 of the cover 30 immediately after the molding is rotated upward, and the closing locking piece 38 provided on the cover part 36 is connected to the opening edge 32A of the opening part 32 of the cover body 31 as shown in FIG. If it arrange | positions in the overlapping position, the cover 30 of the state which closed the opening part 32 is obtained.

  From the state in which the opening 32 is closed (the state shown in FIG. 13), the lid 36 is further rotated by 180 °, and the opening locking projection 35 formed on the upper surface of the cover body 31 is provided in the lid 36. When locked in the locking hole 37, the lid 36 is locked to the cover body 31 with the opening 32 opened. Thereby, the cover 30 with the opening 32 opened is obtained.

Next, a method for assembling the wiring module 10 will be described.
Each connection member 20 and the external connection member 25 are accommodated in the first insulating protector 11 </ b> A, and the detection terminal 22 connected to the electric wire is placed on the connection member 20 in an overlapping manner. Each connecting member 20 is accommodated in the second insulating protector 11 </ b> B, and the detection terminal 22 to which the electric wire is connected is placed on the connecting member 20.

  Next, each insulation protector 11 is attached to a storage element group. Specifically, the through-hole 21 of the connection member 20 accommodated in the insulation protector 11 is attached to the electrode terminal and bolted to fix the insulation protector 11 to the power storage element group.

  Next, the cover 30 is attached to each insulation protector 11. A cover 30 with the opening 32 opened is attached to the first insulating protector 11A, and a cover 30 with the opening 32 closed is attached to the second insulating protector 11B. When the cover locking projection 13 </ b> B of the insulating protector 11 is fitted into the cover locking hole 33 provided in the cover 30 and locked, the cover 30 is attached to the insulating protector 11. Thereby, an electrical storage module is obtained.

Next, the operation and effect of this embodiment will be described.
In the present embodiment, the cover 30 that covers the insulating protector 11 includes a cover main body 31 having an opening 32 and a lid 36 that can open and close the opening 32. Therefore, in this embodiment, when using as the cover 30 which covers the 1st insulation protector 11A in which the external connection member 25 (projection member) is arranged, it is sufficient to use it with the opening 32 opened. What is necessary is just to use it in the state which closed the opening part 32, when using it as the cover 30 which covers the 2nd insulation protector 11B which is not distribute | arranged.

  Therefore, according to the present embodiment, the cover 30 that can be used for both the first insulating protector 11A where the external connection member 25 (projecting member) is disposed and the second insulating protector 11B where the projecting member is not disposed. Since it can provide, the cover 30 which covers the insulation protector 11 attached to an electrical storage element group can be shared.

  Moreover, according to this embodiment, since the cover part 36 is provided integrally with the cover main body 31, the number of parts can be reduced and the loss of the cover part 36 can be prevented.

  In the case where the lid portion 36 is integrated with the cover body 31 as in the present embodiment, there is a concern that when the opening portion 32 is opened, the lid portion 36 sways due to vibration or the like and collides with other members. Is done. However, according to the present embodiment, there are provided open locking portions (open locking protrusions 35, open locking holes 37) for locking the lid portion 36 to the cover body 31 with the opening 32 opened. Thus, the lid 36 can be locked to the cover main body 31 even when the opening 32 is opened, so that the collision between the lid 36 and other members can be prevented.

  By the way, even if the opening portion 32 of the cover body 31 is closed by the lid portion 36, the lid portion 36 may be removed due to vibration or the like, and the opening portion 32 may be opened. Since the closure locking portions 32A and 38 for locking the lid portion 36 to the cover main body 31 in the closed state are provided, the lid portion 36 is locked with the opening portion 32 closed. It is possible to prevent the opening 36 from being opened due to the lid 36 being removed.

  In the present embodiment, the cover 30 is formed between the main body molding surfaces 42 and 45 and the lid molding surfaces 43 and 46 formed on the first molding die 41 and the second molding die 44, respectively. Molded by injecting resin into the molding space 47, the lid molding surfaces 43 and 46 of the molding dies 41 and 44 are provided so as to intersect the main body molding surfaces 42 and 45, and the end 48 of the lid molding surface is It is set at a position that does not overlap with the end 32B of the opening 32 in the mold opening direction.

  Therefore, according to this embodiment, after injecting the resin into the molding space 47, the cover 30 can be molded by opening the first molding die 41 and the second molding die 44 in the mold opening direction. A slide mold is not required.

  In particular, according to the present embodiment, the cover 30 immediately after molding has the lid portion 36 inclined downward, so that the hinge 34 does not open unintentionally and the workability is improved.

<Other embodiments>
The technology disclosed in this specification is not limited to the embodiment described with reference to the above description and drawings, and may be, for example, the following embodiment.
(1) In the above embodiment, the cover part 36 provided integrally with the cover 30 main body is shown, but the cover part may be separate from the cover main body.
(2) In the above embodiment, the cover provided with the open locking portions 35 and 37 for locking the lid portion 36 to the main body of the cover 30 with the opening 32 opened is shown, but the cover without the open locking portion. It may be.
(3) In the above embodiment, the cover 30 provided with the closing locking portions 32A and 38 for locking the lid portion 36 to the cover body 31 with the opening 32 closed is shown, but there is no closing locking portion. It may be a cover.
(4) In the above-described embodiment, the insulating protector 11A having the protruding member and the insulating protector 11B (two types) not having the protruding member are used as the insulating protector 11. However, the insulating protector may be one type or three types. It may be the above.
(5) In the above embodiment, an example in which one cover 30 is attached to one insulation protector 11 has been described, but a configuration in which a plurality of covers are attached to one insulation protector may be employed.
(6) In the above-described embodiment, the lid molding surfaces 43 and 46 are provided so as to intersect the main body molding surfaces 42 and 45, and the end portions 48 of the lid molding surfaces 43 and 46 are connected to the end portion 32 </ b> B of the opening 32. Although an example in which molding is performed using a molding die (first molding die 41, second molding die 44) set at a position that does not overlap in the mold opening direction has been shown, the end of the lid molding surface is the opening portion. You may use the shaping | molding die set to the position which overlaps with an edge part in a mold opening direction.
(7) In the above embodiment, the cover part 36 of the cover 30 immediately after molding is inclined downward. However, the cover part of the cover immediately after molding is arranged in the opening or the cover immediately after molding. The lid portion may be inclined upward.

DESCRIPTION OF SYMBOLS 10 ... Wiring module 11 ... Insulation protector 11A ... 1st insulation protector 11B ... 2nd insulation protector 20 ... Connection member 25 ... External connection member (projection member)
26 ... Terminal connecting portion 27 ... Through hole 28 ... External connecting portion 29 ... External connecting terminal 30 ... Cover 31 ... Cover body 32 ... Opening portion 32A ... Opening edge (closing locking portion)
32B ... the end of the opening
34 ... Hinge 35 ... Opening locking projection (opening locking portion)
36 ... Lid 37 ... Opening lock hole (Open lock)
38 ... Closure locking piece (closing locking part)
41 ... 1st shaping | molding die 42 ... 1st main body molding surface (main body molding surface)
43 ... 1st cover part molding surface (lid part molding surface)
44 ... 2nd shaping | molding die 45 ... 2nd main body molding surface (main body molding surface)
46. Second lid molding surface (lid molding surface)
47 ... molding space 48 ... end of lid part molding surface

Claims (6)

A cover that covers an insulating protector that is attached to a storage element group in which a plurality of storage elements each having a positive electrode electrode and a negative electrode terminal are arranged and can be accommodated by projecting a protruding member ,
A cover body having an opening; and a lid that can freely open and close the opening. In the insulating protector that houses the protruding member, the lid is opened and the protruding member protrudes from the opening. cover.   The cover according to claim 1, wherein the lid is provided integrally with the cover body.   The cover according to claim 1, further comprising an opening locking portion that locks the lid portion to the cover body in a state where the opening portion is opened.   The cover according to any one of claims 1 to 3, further comprising a closing locking portion that locks the lid portion to the cover body in a state where the opening portion is closed. An insulation protector attached to a power storage element group in which a plurality of power storage elements having positive and negative electrode terminals are arranged;
A wiring module comprising the cover according to any one of claims 1 to 4. Covering an insulating protector that is attached to a power storage element group in which a plurality of power storage elements each having a positive electrode electrode and a negative electrode terminal are arranged and projects a projecting member to be accommodated , and a cover body having an opening, and the opening can be opened and closed In the insulating protector for accommodating the protruding member, a manufacturing method of a cover that opens the lid and protrudes the protruding member from the opening ,
Including a molding step of molding the cover by injecting a resin into a molding space formed between the first molding die and the second molding die moving in the mold opening direction;
The molding space is formed between a main body molding surface that forms the cover main body formed in the first molding die and the second molding die, and a lid molding surface that forms the lid. And
The lid molding surface is provided so as to intersect with the main body molding surface, and an end of the lid molding surface is set to a position that does not overlap with an end of the opening in the mold opening direction. Production method.

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