JP5284248B2 - Chamber duct mounting structure to laminate - Google Patents

Description

  The present invention relates to a structure for attaching a chamber duct to a laminated body, in which a chamber duct that forms a refrigerant flow path between the laminated body and a laminated body in which resin frames and batteries are alternately laminated is attached.

Conventionally, the structure shown in FIG. 5 and FIG. 6 is a structure in which a chamber duct that forms a refrigerant flow path between the resin frame and the battery is alternately laminated on the laminated body. Specifically, the laminated resin frame 2 is provided with a thick (about 2 mm) claw 2a that is highly rigid and hardly elastically deforms, the chamber duct 4 is provided with a hole 4a, and the edges of the claw 2a and / or the hole 4a are provided. The nail | claw 2a was inserted in the hole 4a, shaving.

However, the conventional structure for attaching a chamber duct to a laminate has the following problems.
Since the claw 2a is fitted into the hole 4a while cutting the edge of the claw 2a and / or the hole 4a, the fitting load when the claw 2a is fitted into the hole 4a is very high. For this reason, (i) the claw 2a may be broken when the claw 2a is fitted into the hole 4a. Moreover, (ii) When it becomes necessary to remove the chamber duct 4 attached to the laminated body from the laminated body, a tool is required to remove the chamber duct 4 and it takes time.
Although it is conceivable to enlarge the hole 4a to reduce the engagement margin between the claw 2a and the edge of the hole 4a and reduce the fitting load when the claw 2a is fitted into the hole 4a, the chamber duct 4 attached to the laminate is considered. There is a possibility that the claw 2a is detached from the hole 4a and the chamber duct 4 is detached from the laminated body.

JP 2009-99490 A

  An object of the present invention is to provide a structure for attaching a chamber duct to a laminate that can prevent the chamber duct from being detached from the laminate even if the load for attaching the chamber duct to the laminate is smaller than in the past.

The present invention for achieving the above object is as follows.
(1) a laminate in which resin frames and batteries are alternately laminated;
A chamber duct that is disposed on both sides in a direction orthogonal to the stacking direction of the stacked body and forms a refrigerant flow path between the stacked body; and
Have
The resin frame includes a main body having a contact portion that comes into contact with the battery, an extending portion extending from the main body portion toward the chamber duct, and extending from the main body portion toward the chamber duct side. An elastically deformable claw that can be elastically deformed in the direction of approaching and separating,
The chamber duct includes a chamber duct side extending portion that is inserted between the extending portion and the elastic deformation claw, and the surface of the chamber duct side extending portion on the extending portion side is The extending portion is in surface contact, and an engaging portion that engages with the elastic deformation claw is provided on a surface of the chamber duct side extending portion on the elastic deformation claw side,
A structure for attaching a chamber duct to a laminate.
(2) The chamber duct includes a vertically extending portion extending in a vertical direction, and the chamber duct side extending portion extends from an upper end portion of the vertically extending portion to the resin frame side,
A sealing material for sealing a gap between the vertically extending portion and the extending portion is provided;
The sealing material according to (1), wherein the seal material is compressed and deformed by the vertically extending portion and the extending portion, and is in surface contact with the vertically extending portion and the extending portion. Chamber duct mounting structure.
(3) The sealing material is compressed and deformed by the vertically extending portion and the extending portion until the thickness becomes 40% to 20% of the thickness when in a free state. (2) A chamber duct mounting structure to the laminate described above.

According to the chamber duct mounting structure to the laminate of (1) above, since the resin frame has the extending portion and the elastic deformation claw, and the chamber duct has the chamber duct side extending portion, the elastic deformation The chamber duct can be attached to the laminate by elastically deforming (bending) the claw and inserting the chamber duct side extending portion between the elastic deforming claw and the extending portion. Therefore, the chamber duct can be attached to the laminated body without cutting the edges of the claws and / or holes as in the prior art, and the mounting load of the chamber duct on the laminated body can be reduced compared to the conventional case.
Moreover, since the engaging part which engages with an elastic deformation claw is provided in the chamber duct side extension part, it can suppress that an elastic deformation claw and an engaging part engage, and a chamber duct remove | deviates from a laminated body. .
In addition, since the surface on the extension portion side of the extension portion on the chamber duct side is in surface contact with the extension portion, the chamber duct is compared with the case where the extension portion on the chamber duct side or line contact with the extension portion. Is prevented from rotating with respect to the laminate. Therefore, it is possible to reliably suppress the chamber duct from rotating with respect to the laminated body and disengaging the elastic deformation claw and the engaging portion.

According to the chamber duct mounting structure to the laminate of (2) above, the sealing material is compressed and deformed by the vertically extending portion and the extending portion, and is in surface contact with the vertically extending portion and the extending portion. Therefore, the refrigerant in the refrigerant flow path formed by the laminate and the chamber duct can be prevented from leaking from the gap between the extending portion and the chamber duct.

According to the chamber duct mounting structure to the laminate of (3) above, until the sealing material reaches a thickness of 40% to 20% of the thickness when it is in a free state by the vertically extending portion and the extending portion. Since the compression deformation is performed, the refrigerant in the refrigerant flow path formed by the laminate and the chamber duct is maintained between the extension portion and the chamber duct while maintaining the mounting property of the chamber duct to the laminate. Leakage from the gap can be reliably suppressed.

It is sectional drawing of the resin frame and chamber duct of a laminated body of the Example of this invention before attaching a chamber duct to a laminated body of the chamber duct attached structure to a laminated body. It is sectional drawing of the resin frame of a laminated body, and a chamber duct when the chamber duct is attached to a laminated body of the chamber duct attached structure to the laminated body of the Example of this invention. It is the A section enlarged view of FIG. It is a component structure perspective view of the battery module containing a laminated body of the chamber duct attachment structure to a laminated body of the Example of this invention. It is sectional drawing of the resin frame and chamber duct of the laminated body of the conventional structure of the chamber duct to a laminated body before attaching a chamber duct to a laminated body. It is sectional drawing of the resin frame of a laminated body when a chamber duct is attached to a laminated body, and a chamber duct of the conventional chamber duct attached structure to a laminated body.

Below, the chamber duct attachment structure (apparatus) to a laminated body is demonstrated with reference to FIGS.
As shown in FIGS. 1 and 2, the chamber duct mounting structure 10 to the laminate of the embodiment of the present invention includes a laminate 20 and a chamber duct 60.

  As shown in FIG. 4, the laminated body 20 is formed by alternately laminating resin frames (resin plates) 30 and batteries 40 that are heating elements, and constitutes a part of the battery module 50.

The battery module 50 includes an end plate 51 and a restraining band 52 in addition to the stacked body 20.
The end plates 51 are disposed on both outer sides of the stacked body 20 in the stacking direction, and sandwich the stacked body 20 from both sides of the stacked body 20 in the stacking direction.
The restraint band 52 extends in the stacking direction of the stacked body 20. End portions of the restraining band 53 in the extending direction are respectively coupled to end plates 51 arranged on the outer sides in the stacking direction of the stacked body 20 using screws, bolts 52a, and the like. The restraint band 52 connects the end plates 51 arranged on both outer sides in the stacking direction of the stacked body 20. The restraint band 52 is made of metal, for example. The restraining band 52 covers the restraining band 52 with a resin member 52b made of an insulating material (for example, made of polypropylene), and a resin tray 52c made of an insulating material (for example, made of polypropylene) is disposed between the restraining band 52 and the battery 40. Etc., and is insulated from the battery 40.

The resin frame 30 is made of an insulating material (for example, made of polypropylene). The resin frame 30 is an injection-molded product and has a single component configuration. The resin frame 30 has a substantially rectangular plate shape when viewed from the front.
As shown in FIGS. 1 and 2, the resin frame 30 includes a main body portion 31, an extending portion 32, and an elastic deformation claw 33. The resin frame 30 further includes a protruding portion 34 and a harness clip receiving portion 35.

  The main body 31 includes a contact portion 31 a that contacts the battery 40. The contact portion 31a is in the central portion of the resin frame 30 and its vicinity in a front view of the resin frame 30. As shown in FIG. 4, the front and back side surfaces of the contact portion 31 a are uneven surfaces, and a refrigerant flow path is formed between the contact portion 31 a and the battery 40 at a position facing the surface. As shown in FIGS. 1 and 2, the front and back other side surfaces of the contact portion 31 a are flat and come into surface contact with the battery 40 in a position facing the surface. However, the front and back other side surfaces of the contact portion 31a may be uneven as well as the front and back side surfaces of the contact portion 31a.

The extending portions 32 are provided on both sides of the main body portion 31. The extending portion 32 is provided to extend from the vicinity of the upper end of the side surface of the main body portion 31 toward the chamber duct 60 side. The extending portion 32 has rigidity and does not elastically deform or is negligible even if elastically deformed.
As shown in FIG. 3, the extending portion 32 extends from the main body portion 31 at the front end portion so as to abut on the vertically extending portion 61 of the chamber duct 60, and the chamber duct 60 moves further to the resin frame 30 side. A chamber duct stopper 32a is provided to prevent this.
The surface of the extended portion 32 on the elastic deformation claw 33 side (the elastic deformation claw 33 facing surface, the upper surface) 32b is a flat surface, and the chamber duct side extended portion 62 of the chamber duct 60 is in surface contact.

  The elastic deformation claws 33 are provided on both sides of the main body 31. The elastic deformation claw 33 is provided to extend from the upper end of the side surface of the main body 31 or the vicinity thereof to the chamber duct 60 side. The elastic deformation claw 33 is provided above the extended portion 32. The elastic deformation claw 33 has a cantilever shape, and can be elastically deformed (bending deformation and bending) in a direction (vertical direction) approaching and moving away from the extending portion 32 by using the resin elasticity of its deformation portion 33a. ing. The elastic deformation claw 33 has a cantilever shape, and the deformation portion 33a has a vertical thickness of 0.7 mm to 0.9 mm, and can be easily elastically deformed. In addition, since the up-down direction thickness of the deformation | transformation part 33a is 0.7 mm or more, when shape | molding the resin frame 30, hot water (molten resin) is surely spread to the cavity site | part used as the elastic deformation nail | claw 33 after shaping | molding. be able to. Moreover, since the vertical thickness of the deformation portion 33a is 0.9 mm or less, the elastic deformation claw 33 can be easily elastically deformed in the vertical direction.

The elastically deforming claw 33 extends while being inclined in a direction away from the main body portion 31 and a direction approaching the extending portion 32 (downward). This is to prevent the deforming portion 33 a from interfering with the chamber duct side extending portion 62 of the chamber duct 60. However, if the deformable portion 33a is allowed to interfere with the chamber duct side extending portion 62 (if there is no problem even if the interference occurs), the elastic deformable claw 33 extends in a direction away from the main body portion 31. You may extend inclining in the direction (upward) which leaves | separates from the part 32, and may extend without inclining in the straight form in the direction away from the main-body part 31.
The distal end of the elastic deformation claw 33 in the extending direction is a claw-shaped portion 33b that is thicker than the deformation portion 33a and cannot be elastically deformed (can be ignored even if elastically deformed). The claw-shaped portion 33 b engages with the engaging portion 62 a of the chamber duct 60.

The protrusions 34 are provided on both sides of the main body 31 as shown in FIGS. The protrusion 34 is provided to extend from the lower end of the side surface of the main body 31 or the vicinity thereof to the chamber duct 60 side. The protrusion 34 has rigidity and is not elastically deformed or negligible even if elastically deformed. A recessed portion 34 a that is recessed downward is formed in the intermediate portion of the protruding portion 34 in the protruding direction. The recess 34 a receives the downward projecting portion 64 of the chamber duct 60.

  The harness clip receiving portion 35 may be provided on both sides of the main exterior 31 or may be provided only on one side of the main body portion 31 (in the illustrated example, the harness clip receiving portion 35 is on one side of the main body portion 31. Only the case where it is provided only in the case of The harness clip receiving portion 35 is provided above the elastic deformation claw 33. The harness clip receiving portion 35 is provided for attaching a clip 55 that holds a harness (not shown) disposed above the laminate 20.

  As shown in FIG. 4, the battery 40 has a plate shape that is substantially rectangular when viewed from the front, except for the terminals provided at the top. The battery 40 is a secondary battery such as a lithium ion battery or a nickel metal hydride battery. Each battery 40 is connected in series.

  The chamber duct 60 is made of resin, for example. However, the chamber duct 60 is not limited to resin, and may be made of metal. As shown in FIG. 2, the chamber duct 60 is disposed on both sides in the vertical direction and in the direction orthogonal to the stacking direction of the stacked body 20, and the coolant flow through which the coolant for cooling the battery 40 passes between the chamber duct 60 and the stacked body 20. A path C is formed. The refrigerant flow path C is a suction side refrigerant flow path C1 disposed on one side in a direction orthogonal to the stacking direction of the stacked body 20, and a discharge side disposed on the other side in the direction orthogonal to the stacking direction of the stacked body 20. And a refrigerant channel C2. The refrigerant (for example, air) that has flowed into the suction side refrigerant flow path C1 passes through the refrigerant flow path between the main body portion 31 of the resin frame 30 and the battery 40 from the suction side refrigerant flow path C1, and then is discharged. The refrigerant flows into the refrigerant flow path C2 and is discharged from the discharge side refrigerant flow path C2.

The chamber duct 60 includes a vertically extending portion 61 that extends in the vertical direction, a chamber duct side extending portion 62 that extends from the upper end portion of the vertically extending portion 61 toward the resin frame 30, and a resin that extends from the lower end portion of the vertically extending portion 61. A chamber duct side protrusion 63 that protrudes toward the frame 30 and faces the chamber duct side extension 62, and a lower protrusion 64 that protrudes downward from an intermediate portion in the protrusion direction of the chamber duct side protrusion 63 are provided.

The chamber duct side extending portion 62 has rigidity and does not elastically deform in the vertical direction or is negligible even when elastically deformed. The chamber duct side extending portion 62 is inserted and positioned between the extending portion 32 of the resin frame 30 and the elastic deformation claw 33.
The chamber duct side extending portion 62 is placed on the extending portion 32. The surface (lower surface) 62 b on the extension portion 32 side of the chamber duct side extension portion 62 is in surface contact with the surface 32 b of the extension portion 32. 50% or more of the extending direction from the vertically extending portion 61 of the chamber duct side extending portion 62 rests on the extending portion 32 and is in surface contact with the surface 32 b of the extending portion 32.
An engaging portion 62 a that engages with the claw-shaped portion 33 b of the elastic deformation claw 33 is provided on the surface (upper surface) of the chamber duct side extending portion 62 on the elastic deformation claw 33 side. The engagement part 62 a is engaged with the claw-shaped part 33 b of the elastic deformation claw 33, thereby preventing the chamber duct side extension part 62 from coming out between the extension part 32 of the resin frame 30 and the elastic deformation claw 33. Is done.

The downward projecting portion 64 enters (is inserted into) the recess 34 a of the projecting portion 34 of the resin frame 30. The lower end (front end in the protruding direction) of the downward projecting portion 64 is not in contact with the bottom surface of the recess 34a, and there is a gap between the bottom surface of the recess 34a.
Since there is a gap between the downward protrusion 64 and the bottom surface of the recess 34a, the chamber duct 60 extends when the downward protrusion 64 is inserted into the recess 34a and the chamber duct side extension 62 is placed on the extension 32. It is in a state of hanging from the part 32.
Further, since there is a gap between the downward projecting portion 64 and the bottom surface of the recess 34 a, the dimensional tolerance of the resin frame 30 and the dimensional tolerance of the chamber duct 60 in a state of hanging from the extending portion 32 are set to the lower projecting portion 64. It can be absorbed in the gap between the bottom surface of the recess 34a.

A sealing material 65 is attached to the vertically extending portion 61 of the chamber duct 60, and the sealing material 65 seals the gap between the vertically extending portion 61 and the extending portion 32 of the resin frame 30.
The sealing material 65 is made of, for example, urethane (made of ether-based polyurethane), and can be easily compressed and deformed (elastically deformed) compared to a case of rubber (made of EPDM). The seal member 65 is compressed and deformed by the vertically extending portion 61 and the extending portion 32 (extension direction front end surface excluding the chamber duct stopper 32a of the extending portion 32), and the vertically extending portion 61 and the extending portion. 32 is in surface contact. The thickness of the sealing material 65 in a compressed and deformed state in a direction parallel to the direction in which the chamber duct side extending portion 62 extends from the vertical extending portion 61 is equal to the chamber duct side extending portion 62 in the vertical extending portion 61. It is set to 1/2 to 1/3 (including both ends) of the extending amount extending from. When the sealing material 65 is in a free state (when it is not compressed and deformed by the vertically extending portion 61 and the extending portion 32), a cross-sectional shape when cut along a plane perpendicular to the stacking direction of the stacked body 40 ( The cross-sectional shape) is a rectangle (including a substantially rectangular shape and four corners having an R shape).
The sealing material 65 is compressed and deformed by the vertically extending portion 61 and the extending portion 32 until the thickness becomes 40% to 20% (including both ends) of the thickness when the sealing material 65 is in a free state (sealing material). The compression ratio of 65 is 60 to 80 percent). If the thickness at the time of compressive deformation of the sealing material 65 is larger than 40% of the thickness when the sealing material 65 is in a free state (if the compressibility of the sealing material 65 is smaller than 60%), the sealing performance by the sealing material 65 is ensured. When the thickness of the sealing material 65 during compression deformation is less than 20% of the thickness when the sealing material 65 is in a free state (when the compression rate of the sealing material 65 is greater than 80%), the repulsive force by the sealing material 65 This is because it becomes difficult to insert the chamber duct extending portion 62 between the extending portion 32 and the elastic deforming claw 33 and to engage the engaging portion 62a with the elastic deforming claw 33.

Further, a sealing material 66 is also attached to the chamber duct side protruding portion 63 of the chamber duct 60, and the sealing material 66 seals a gap between the chamber duct side protruding portion 63 and the protruding portion 34 of the resin frame 30. ing. The sealing material 66 is made of a material different from that of the sealing material 65, and is made of, for example, rubber (made of EPDM). However, the sealing material 66 may be made of the same material (made of urethane) as the sealing material 65 as long as there is no problem in sealing performance. The sealing material 66 is in a state in which it does not undergo compression deformation or hardly undergoes compression deformation between the chamber duct side protruding portion 63 and the protruding portion 34, and the surface (lower surface) of the chamber duct side extending portion 62 on the extending portion 32 side. 62 b does not hinder surface contact with the surface 32 b of the extending portion 32.

Next, the operation of the embodiment of the present invention will be described.
In the embodiment of the present invention, since the resin frame 30 includes the extending portion 32 and the elastic deformation claw 33 and the chamber duct 60 includes the chamber duct side extending portion 62, the elastic deformation claw 33 is elastically deformed. The chamber duct 60 can be attached to the resin frame 30 (laminated body 20) by inserting the chamber duct side extending portion 62 between the elastic deformation claw 33 and the extending portion 32. Therefore, the chamber duct 60 can be attached to the laminated body 20 without scraping the edges of the claws and / or holes as in the prior art, and the mounting load of the chamber duct 60 on the laminated body 20 can be reduced as compared with the conventional case.

Since the engaging portion 62 a that engages with the elastic deformation claw 33 is provided in the chamber duct side extending portion 62, the elastic deformation claw 33 and the engaging portion 62 a are engaged, and the chamber duct 60 is detached from the laminate 20. It can suppress coming off against the intention of the user.
Further, since the surface 62b of the chamber duct side extending portion 62 on the extending portion 32 side is in surface contact with the extending portion 32, the chamber duct side extending portion 62 is in point or line contact with the extending portion 32. As compared with the above, rotation of the chamber duct 60 relative to the stacked body 20 is suppressed. Therefore, it is possible to reliably prevent the chamber duct 60 from rotating with respect to the stacked body 20 and releasing the engagement between the elastic deformation claw 33 and the engagement portion 62a.

Since the chamber duct 60 is not attached to the laminate 20 using another part such as a screw, the number of parts can be reduced as compared with the case where the chamber duct is attached to the laminate using another part such as a screw.
Further, since the chamber duct 60 includes the chamber duct side extending portion 62 which is positioned between the extending portion 32 and the elastic deformation claw 33, the chamber duct 60 includes the extending portion 32, the elastic deformation claw. There is no hole in which 33 is inserted. Therefore, the space above the elastic deformation claw 33 can be effectively used as compared with the case where the chamber duct 60 is provided with a hole into which the extending portion 32 and the elastic deformation claw 33 are inserted. As a result, the harness clip attachment part 35 can be provided above the elastic deformation claw 33, and the clip 55 for holding the harness can be provided.

In order to prevent the gate trace (burr) from damaging the battery 40 even if the gate trace (burr) is not subjected to post-processing, the gate into which the hot water (molten resin) flows into the cavity when the resin frame 30 is molded is It is necessary to set the part shifted to the left and right sides from the part serving as the contact portion 31a that contacts the battery 40. Therefore, there is a possibility that hot water does not reach the cavity part far from the gate among the cavity parts to be the elastic deformation claws 33 on the left and right sides. However, when the resin frame 30 was molded by injection molding, no hot water was applied to the cavity portion that becomes the elastic deformation claw 33 on the side far from the gate, and no problem occurred. Therefore, even if the elastic deformation claw 33 is thick enough to be elastically deformed, there is no problem in molding the resin frame 30.

Since the sealing material 65 is compressed and deformed by the vertically extending portion 61 and the extending portion 32 and is in surface contact with the vertically extending portion 61 and the extending portion 32, the stacked body 40, the chamber duct 60, and the like. It is possible to prevent the refrigerant in the refrigerant flow path C formed by the leakage from the gap between the extending portion 32 and the chamber duct 60.
Further, since the sealing material 65 is compressed and deformed by the vertically extending portion 61 and the extending portion 32 until the thickness becomes 40% to 20% of the thickness in the free state, the chamber duct 60 The refrigerant in the refrigerant flow path C formed by the laminate 40 and the chamber duct 60 leaks from the gap between the extension portion 32 and the chamber duct 60 while maintaining the attachment property to the laminate 40. It can be reliably suppressed.

DESCRIPTION OF SYMBOLS 10 Chamber duct attachment structure to laminated body 20 Laminated body 30 Resin frame 31 Main body part 32 Extension part 33 Elastic deformation nail 34 Projection part 35 Harness clip receiving part 40 Battery 50 Battery module 51 End plate 52 Restraint band 60 Chamber duct 61 Up and down Direction extending portion 62 Chamber duct side extending portion 63 Chamber duct side projecting portion 64 Lower projecting portions 65 and 66 Sealing material

Claims (3)

A laminate in which resin frames and batteries are alternately laminated;
A chamber duct that is disposed on both sides in a direction orthogonal to the stacking direction of the stacked body and forms a refrigerant flow path between the stacked body; and
Have
The resin frame includes a main body having a contact portion that comes into contact with the battery, an extending portion extending from the main body portion toward the chamber duct, and extending from the main body portion toward the chamber duct side. An elastically deformable claw that can be elastically deformed in the direction of approaching and separating,
The chamber duct includes a chamber duct side extending portion that is inserted between the extending portion and the elastic deformation claw, and the surface of the chamber duct side extending portion on the extending portion side is The extending portion is in surface contact, and an engaging portion that engages with the elastic deformation claw is provided on a surface of the chamber duct side extending portion on the elastic deformation claw side,
A structure for attaching a chamber duct to a laminate. The chamber duct includes a vertically extending portion extending in the vertical direction, and the chamber duct side extending portion extends from an upper end portion of the vertically extending portion to the resin frame side,
A sealing material for sealing a gap between the vertically extending portion and the extending portion is provided;
The laminate according to claim 1, wherein the sealing material is compressed and deformed by the vertically extending portion and the extending portion, and is in surface contact with the vertically extending portion and the extending portion. Chamber duct mounting structure.   The laminate according to claim 2, wherein the sealing material is compressed and deformed by the vertically extending portion and the extending portion until the thickness becomes 40% to 20% of the thickness when the sealing material is in a free state. A structure for attaching a chamber duct to the body.

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