JP5609495B2 - Battery mounting structure for vehicles - Google Patents

Description

  The present invention relates to a vehicle battery mounting structure.

  A battery mounting structure in which a battery (battery) is mounted under the floor of a vehicle is known (for example, Patent Document 1). In the technique disclosed in Patent Document 1, unit side members of a unit frame that supports a battery are arranged on the inner side in the vehicle width direction of a pair of left and right extension side members provided on the lower surface of a floor panel, and these extension side members And the unit side member are combined.

JP 2003-226267 A

  By the way, in a hybrid vehicle and an electric vehicle, in order to enable long-distance driving, the battery tends to increase in size. In this regard, in the technology disclosed in Patent Document 1, since the unit side member is coupled to the extension side member, the bending deformation in the vehicle width direction of the unit side member due to a vehicle side collision or the like is suppressed, Since the unit side member is disposed inside the extension side member in the vehicle width direction, the mounting space of the battery in the vehicle width direction is narrowed.

  An object of the present invention is to provide a vehicle battery mounting structure capable of widening a battery mounting space while suppressing deformation of a battery frame due to a vehicle collision in consideration of the above facts.

The battery mounting structure for a vehicle according to claim 1 includes a cylindrical frame portion disposed on an outer periphery of the battery as viewed from the vehicle vertical direction, and extends in a direction intersecting the cylindrical frame portion. A support member coupled to the mounting portion and supporting the battery from below in the vehicle up-down direction , a battery frame for supporting the battery under the floor of the vehicle, and provided in the mounting portion. A collar member that penetrates in the vehicle vertical direction and has an upper end in the vehicle vertical direction extending to the vehicle body, and engages with a lower end in the vehicle vertical direction of the collar member that protrudes downward from the mounting portion in the vehicle vertical direction. is an engagement portion is being inserted into the collar member, a fixing member for fixing to the vehicle body to the battery frame with the collar member, provided at the junction between the support member and the mounting portion, A cover portion covering the side surfaces of Kigakarigo portion, and a.

  According to the first aspect of the invention, the mounting portion of the cylindrical frame portion disposed on the outer periphery of the battery as viewed from the vehicle vertical direction is provided with the collar member penetrating the mounting portion in the vehicle vertical direction. . The upper end of the collar member in the vertical direction of the vehicle extends to the vehicle body. By fixing the color member to the vehicle body with a fixing member, the battery frame is attached to the vehicle body together with the color member.

Here, the rigidity of the attachment portion is improved by passing the collar member through the attachment portion of the cylindrical frame portion. That is, the collar member not only functions as a spacer between the vehicle body and the cylindrical frame portion, but also functions as a reinforcing member that reinforces the cylindrical frame portion. Thereby, since the deformation | transformation of the cylindrical frame part accompanying a vehicle collision is suppressed, compared with the structure which is not equipped with a collar member, it can mount in the state which made the battery approach the attachment part. Therefore, it is possible to secure a wide mounting space for the battery in the vehicle width direction and the vehicle front-rear direction.
In addition, the cylindrical frame part said here means a frame part with a hollow inside comprised by the closed cross section in a battery frame.

Moreover, the rigidity of the attachment portion is improved by coupling the support member to the attachment portion of the cylindrical frame portion. Therefore, since the cross-sectional area of the cylindrical frame portion can be kept small, it is possible to secure a wider mounting space for the battery in the vehicle width direction and the vehicle front-rear direction.

Further, the fixing member has an engaging portion that is engaged with an end portion on the vehicle vertical direction lower side of the collar member that protrudes downward from the attachment portion in the vehicle vertical direction. Further, a cover portion is provided at a joint portion between the attachment portion and the support member. The cover portion covers the side surface of the engaging portion of the fixing member. Thereby, breakage and damage of the engaging portion due to chipping and contact with the protrusion on the road surface are suppressed. Therefore, the detachability of the fixing member accompanying the battery replacement operation or the like is not impaired, and the battery maintainability is ensured.

The vehicle battery mounting structure according to claim 2 is the vehicle battery mounting structure according to claim 1 , wherein the cover portion is provided with an insertion portion for inserting the fixing member in the vehicle vertical direction. Yes.

According to the invention which concerns on Claim 2 , the insertion part for inserting a fixing member in a vehicle up-down direction is provided in the cover part. The fixing member can be inserted into the collar member from the insertion portion, or the fixing member can be removed from the collar member. Therefore, the work for removing the cover is not necessary, and the maintainability of the battery is improved.

The vehicle battery mounting structure according to claim 3 is the vehicle battery mounting structure according to claim 1 or 2 , wherein the vehicle battery mounting structure is mounted across the mounting portion and the support member, and the mounting portion and the support Each of the members includes a coupling bracket to be joined, and the cover portion is provided on the coupling bracket.

According to the invention which concerns on Claim 3 , the coupling | bond part of an attachment part and a support member is reinforced by the coupling bracket attached ranging over an attachment part and a support member. Thereby, the rigidity of a cylindrical frame part improves. Therefore, since the cross-sectional area of the cylindrical frame portion can be kept small, it is possible to secure a wider mounting space for the battery in the vehicle width direction and the vehicle front-rear direction. Further, by providing the cover portion with the coupling bracket, the number of parts can be reduced as compared with a configuration in which the coupling bracket and the cover portion are separated.

The vehicle battery mounting structure according to claim 4 is the vehicle battery mounting structure according to claim 1 or 2 , wherein the support member is coupled to the mounting portion from the lower side in the vehicle vertical direction. A cover portion is provided.

According to the fourth aspect of the present invention, the cover portion provided on the support member is coupled to the attachment portion of the cylindrical frame portion from the lower side in the vehicle vertical direction. The cover portion covers the engaging portion of the fixing member, and the damage and damage of the engaging portion due to chipping and contact with the projection on the road surface are suppressed. Therefore, the detachability of the fixing member accompanying the battery replacement operation or the like is not impaired, and the battery maintainability is ensured.

  As described above, according to the vehicle battery mounting structure of the present invention, the battery mounting space can be widened while suppressing deformation of the battery frame due to a vehicle collision.

It is the side view which looked at the vehicle to which the battery mounting structure for vehicles which concerns on 1st Embodiment of this invention was applied from the vehicle width direction outer side. It is a perspective view which shows the battery pack and battery frame which concern on 1st Embodiment of this invention. FIG. 3 is an enlarged cross-sectional view taken along line 3-3 of FIG. 2 showing the vehicle battery mounting structure according to the first embodiment of the present invention. It is the perspective view seen from the vehicle diagonal upper direction which shows the coupling bracket which concerns on 1st Embodiment of this invention. It is the perspective view seen from the vehicle slanting lower part which shows the coupling bracket which concerns on 1st Embodiment of this invention. FIG. 6 is an enlarged cross-sectional view taken along line 6-6 of FIG. 2, showing a vehicle battery mounting structure according to a second embodiment of the present invention. It is the perspective view which looked at the cover part which concerns on 2nd Embodiment of this invention from the vehicle diagonally downward. It is a disassembled perspective view which partially cuts and shows the battery under member which concerns on 2nd Embodiment of this invention.

  Hereinafter, a vehicle battery mounting structure according to an embodiment of the present invention will be described with reference to the drawings. It should be noted that the arrow FR shown as appropriate in each figure indicates the front side in the vehicle front-rear direction, the arrow UP indicates the upper side in the vehicle vertical direction, and the arrow RH indicates the vehicle width direction outside (right side).

  First, the first embodiment will be described.

  In FIG. 1, as an example, a vehicle 12 to which the vehicle battery mounting structure 10 according to the present embodiment is applied is shown in a side view. As shown in FIG. 1, the vehicle 12 is an electric vehicle that runs using an electric motor (motor) (not shown) as a drive source, and a battery pack 14 as a battery in which electric power supplied to the electric motor is stored is mounted under the floor. Yes. Thus, the vehicle battery mounting structure 10 according to the present embodiment is applied to the vehicle 12 in which the battery pack 14 is mounted under the floor of the vehicle 12, in other words, on the lower side of the floor panel (not shown).

  As shown in FIG. 2, the vehicle battery mounting structure 10 includes a battery frame 16 that supports the battery pack 14 from the lower side in the vehicle vertical direction. The battery pack 14 is a case in which a plurality of rechargeable storage batteries (not shown) are housed in a case. In FIG. 2, the outer shape of the battery pack 14 is indicated by a two-dot chain line. The battery pack 14 is placed on the battery frame 16 and is fixed to the battery frame 16 with bolts or the like (not shown).

  The battery frame 16 includes a pair of left and right battery side members 18 that extend in the vehicle front-rear direction, a battery front cross member 20 that extends in the vehicle width direction and connects the front ends of the pair of left and right battery side members 18 in the vehicle front-rear direction, A battery sub-cross member 22 extending in the vehicle width direction and connecting a middle part of the pair of left and right battery side members 18 in the vehicle longitudinal direction, and a pair of left and right battery side members 18 extending in the vehicle width direction on the rear side in the vehicle longitudinal direction. A back board 24 that connects the end portions, a battery front cross member 20, a battery sub cross member 22, and a battery under member 26 that connects the back board 24 extend in the vehicle front-rear direction.

  The battery side member 18, the battery front cross member 20, and the backboard 24 are coupled in a frame shape, and are disposed on the outer periphery of the battery pack 14 when viewed from the vehicle vertical direction. The battery side member 18 and the battery front cross member 20 are provided with attachment portions 28 and 62, respectively. At each of the attachment portions 28 and 62, the battery frame 16 is attached to a floor panel 38 (see FIG. 3) of a vehicle body described later. It has been. Hereinafter, the attachment portion 28 of the battery side member 18 as the cylindrical frame portion will be described in detail.

  As shown in FIG. 3, the battery side member 18 is a cylindrical member having a rectangular cross section, and is disposed outside the battery pack 14 in the vehicle width direction when viewed from the vehicle vertical direction. Collar through holes 32 and 34 penetrating in the vehicle vertical direction are formed in the top wall portion 28A and the bottom wall portion 28B of the attachment portion 28 of the battery side member 18, respectively. A cylindrical collar member 36 is penetrated through the collar through holes 32 and 34, and the collar member 36 is joined to the edges of the collar through holes 32 and 34 by welding. The mounting portion 28 is reinforced by the collar member 36.

  An end portion of the collar member 36 on the lower side in the vehicle vertical direction protrudes from the bottom wall portion 28B of the attachment portion 28 to the lower side in the vehicle vertical direction. Thereby, the welding allowance of the collar member 36 and the bottom wall part 28B of the attaching part 28 is ensured. On the other hand, the upper end of the collar member 36 in the vertical direction of the vehicle protrudes from the top wall 28A of the mounting portion 28 to the upper side of the vertical direction of the vehicle and passes through the outer side of the battery pack 14 in the vehicle width direction. It extends to the vehicle body side bracket 40 provided in the vehicle.

  The vehicle body side bracket 40 has a hat shape in cross section and is joined to the lower surface of the floor panel 38 by welding, and the end of the collar member 36 on the upper side in the vehicle vertical direction is abutted against the bottom wall portion 40A. A through hole is formed in the bottom wall portion 40A, and a weld nut 42 is provided on the inner surface (the upper surface in the vehicle vertical direction). A vehicle body fixing bolt (fixing member) 44 passed through the collar member 36 is fastened to the weld nut 42, and the head portion 44 </ b> A of the vehicle body fixing bolt 44 as an engaging portion is positioned on the lower side of the collar member 36 in the vehicle vertical direction. The collar member 36 is fixed to the vehicle body side bracket 40 by being engaged with the end portion. Thus, the attachment portion 28 of the battery side member 18 is attached to the vehicle body side bracket 40 via the collar member 36. In other words, the battery frame 16 is fixed to the vehicle body side bracket 40 along with the collar member 36 by the vehicle body fixing bolts 44.

  The end portion of the battery sub-cross member 22 on the outer side in the vehicle width direction is abutted and coupled to the side wall portion 28C on the inner side in the vehicle width direction of the mounting portion 28 of the battery side member 18. The battery sub-cross member 22 as a support member is a cylindrical member having a rectangular cross section and extends in a direction intersecting with the battery side member 18 to support the battery pack 14 from the lower side in the vehicle vertical direction. The joint portion between the attachment portion 28 of the battery side member 18 and the battery sub cross member 22 is reinforced by a pair of joint brackets 46 and 48 attached from both sides in the vehicle vertical direction.

  As shown in FIG. 4, the coupling bracket 46 attached to the coupling portion between the mounting portion 28 of the battery side member 18 and the battery sub cross member 22 from the upper side in the vehicle vertical direction is the battery side member 18 and the battery sub cross member 22. The battery side member 18 extends over the vehicle in the vertical direction from the edge of the upper surface coupling portion 46A and the substantially T-shaped upper surface coupling portion 46A welded to each upper surface. The battery sub-cross member 22 includes a pair of side surface coupling portions 46B that are disposed over the side surfaces and welded to the respective side surfaces. The upper surface coupling portion 46A is provided with a notch groove 50 in which the collar member 36 is disposed. Further, positioning holes 58 and 59 for positioning are formed in the upper surface coupling portion 46A of the coupling bracket 46 and the upper surface of the battery sub cross member 22, respectively.

  On the other hand, as shown in FIG. 5, the connecting bracket 48 attached to the connecting portion between the battery sub-cross member 22 and the attaching portion 28 from the lower side in the vehicle vertical direction is provided on the battery side member 18 and the battery sub-cross member 22. A substantially T-shaped lower surface coupling portion 48A that is disposed across the lower surface and is welded to each of these lower surfaces, and extends from the edge of the lower surface coupling portion 48A to the upper side in the vehicle vertical direction. It is arranged across the side surfaces of the sub-cross member 22 and protrudes downward from the side surface coupling portion 48B and the lower surface coupling portion 48A in the vehicle vertical direction, and is welded to each side surface, and the head portion 44A of the vehicle body fixing bolt 44 The cover part 48C which covers the side surface is provided. Positioning positioning holes 52 and 54 are formed in the lower surface coupling portion 48A and the lower surface of the battery sub-cross member 22, respectively.

  The cover portion 48C is disposed on the inner side in the vehicle width direction of the head portion 44A of the vehicle body fixing bolt 44. The cover portion 48C has a substantially U-shaped cross section, and is a curved wall that is tapered so that the cross-sectional area decreases toward the tip. The cover portion 48C has a vehicle vertical direction that is higher than the battery side member 18 and the battery sub cross member 22. The side surface of the head portion 44A of the vehicle body fixing bolt 44 located on the lower side is covered over a substantially half circumference from the inner side in the vehicle width direction. Further, a notch portion 56 (insertion portion) for inserting the vehicle body fixing bolt 44 in the vehicle vertical direction is provided at the front end of the cover portion 48C located below the head portion 44A of the vehicle body fixing bolt 44 in the vehicle vertical direction. ) Is provided. The vehicle body fixing bolt 44 can be inserted into the collar member 36 from the notch 56 or the vehicle body fixing bolt 44 can be removed from the collar member 36.

  Next, the operation of the first embodiment will be described.

  As shown in FIG. 3, in the vehicle battery mounting structure 10 according to the present embodiment, the attachment portion 28 of the battery side member 18 is attached to the vehicle body side bracket 40 of the floor panel 38 via the collar member 36.

  Here, the collar member 36 penetrates the collar through holes 32 and 34 formed in the bottom wall portion 28 </ b> B and the top wall portion 28 </ b> A of the attachment portion 28 in the vehicle vertical direction, and is welded to the edge of each collar through hole 32 and 34. It is joined with. In other words, the bottom wall portion 28 </ b> B and the top wall portion 28 </ b> A of the attachment portion 28 are connected by the collar member 36. As a result, the rigidity of the mounting portion 28 is improved, so that deformation (folding, bending, etc.) of the battery side member 18 due to a vehicle collision (side collision, front collision, rear collision, etc.) is suppressed.

  Thus, the collar member 36 not only functions as a spacer between the vehicle body side bracket 40 and the battery side member 18, but also functions as a reinforcing member that reinforces the battery side member 18. Thereby, since deformation of the battery side member 18 due to a vehicle collision is suppressed, the battery pack 14 can be mounted in a state of being close to the attachment portion 28 as compared with a configuration in which the collar member 36 is not provided. In the prior art (for example, Patent Document 1), the arrangement of the unit side members is restricted by the extension side members. However, in the present embodiment, such restrictions are eased. Therefore, it is possible to secure a wide mounting space for the battery pack 14 in the vehicle width direction. Thereby, since the large sized battery pack 14 can be mounted in the vehicle 12, a travel distance can be lengthened.

  The battery sub-cross member 22 is coupled to the attachment portion 28 of the battery side member 18 and is reinforced by a pair of upper and lower coupling brackets 46 and 48. Thereby, the rigidity of the battery side member 18 further improves. Therefore, since the cross-sectional area of the battery side member 18 can be kept small, it is possible to secure a wider mounting space in the vehicle width direction of the battery pack 14.

  The coupling bracket 48 is provided with a cover portion 48C that covers the side surface of the head portion 44A of the vehicle body fixing bolt 44. The cover portion 48C suppresses breakage and damage of the head portion 44A of the vehicle body fixing bolt 44 due to chipping or contact with projections on the road surface. Therefore, the detachability of the vehicle body fixing bolt 44 accompanying the replacement work of the battery pack 14 is not impaired, and the maintainability of the battery pack 14 is ensured.

  Furthermore, a cutout portion 56 is provided in the cover portion 48C. The vehicle body fixing bolt 44 can be inserted into the collar member 36 from the notch 56 or the vehicle body fixing bolt 44 can be removed from the collar member 36. Therefore, the work of removing the coupling bracket 48 is not necessary, and the maintainability of the battery pack 14 is improved.

  The cover portion 48C only needs to cover at least a part of the side surface of the head portion 44A of the vehicle body fixing bolt 44, and the arrangement and the range of covering the side surface of the head portion 44A of the vehicle body fixing bolt 44 are necessary. It can be appropriately changed depending on the situation. Therefore, for example, the side surface of the head portion 44A of the vehicle body fixing bolt 44 can be covered over the entire circumference with the cover portion 48C.

  Further, in the present embodiment, the attachment portion 28 is provided at the joint portion of the battery side member 18 with the battery sub cross member 22, but the attachment portion 28 may be provided at another portion of the battery side member 18.

  Next, a second embodiment will be described. In addition, about the structure similar to 1st Embodiment, a same sign is attached | subjected and description is abbreviate | omitted suitably.

  FIG. 6 is a cross-sectional view of a mounting portion 62 of the battery front cross member 20 as a cylindrical frame portion to which the vehicle battery mounting structure 60 according to the second embodiment is applied. As shown in FIG. 6, the battery front cross member 20 is a cylindrical member having a rectangular cross section, and is disposed on the front side of the battery pack 14 in the vehicle front-rear direction when viewed from the vehicle vertical direction. Collar through holes 64 and 66 penetrating in the vehicle vertical direction are formed in the top wall portion 62A and the bottom wall portion 62B of the mounting portion 62 of the battery front cross member 20, respectively. In the present embodiment, two sets of collar through holes 64 and 66 are formed with a space in the vehicle front-rear direction. A cylindrical collar member 68 passes through the pair of collar through holes 64 and 66, and the collar member 68 is joined to the edge of each of the collar through holes 64 and 66 by welding. The mounting portion 62 is reinforced by these collar members 68.

  An end portion of the collar member 68 on the lower side in the vehicle vertical direction protrudes from the bottom wall portion 62B of the mounting portion 62 to the lower side in the vehicle vertical direction. Thereby, the welding allowance of the collar member 68 and the bottom wall part 62B of the attaching part 62 is ensured. On the other hand, the upper end of the collar member 68 in the vehicle vertical direction protrudes upward from the top wall 62A of the mounting portion 62 in the vertical direction of the vehicle and extends to the floor panel 38 through the front side of the battery pack 14 in the vehicle longitudinal direction. , Abutted against the lower surface of the floor panel 38.

  A through hole is formed in the floor panel 38, and two weld nuts 70 are provided on the upper surface (the upper surface in the vehicle vertical direction) with a gap in the vehicle front-rear direction. The vehicle body fixing bolts (fixing members) 72 passed through the collar members 68 are fastened to the weld nuts 70, and the head portions 72A of the vehicle body fixing bolts 72 as the engaging portions are connected to the collar members 68 in the vehicle vertical direction. The collar member 68 is fixed to the floor panel 38 by engaging with the lower end. Thus, the attachment portion 62 of the battery front cross member 20 is attached to the floor panel 38 via the collar member 68. In other words, the battery front cross member 20 together with the collar member 68 is fixed to the floor panel 38 as the vehicle body by the vehicle body fixing bolts 72.

  An end of the battery under member 26 on the front side in the vehicle front-rear direction is abutted and coupled to the mounting portion 62 of the battery front cross member 20 from the lower side in the vehicle vertical direction. The battery under member 26 extends in a direction crossing the battery front cross member 20 and supports the battery pack 14 from the lower side in the vehicle vertical direction.

  As shown in FIGS. 7 and 8, the battery under member 26 includes a lower frame 74 having a hat-shaped cross section and a flat upper frame 76 that is stacked on the lower frame 74. The lower frame 74 includes a frame main body portion 78 on which the upper frame 76 is overlaid, and a cover portion 80 that is disposed below the battery front cross member 20 in the vehicle vertical direction.

  In the pair of left and right flange portions 78A in the frame main body portion 78, a plurality of bead portions 82 that protrude upward in the vehicle vertical direction are formed at intervals in the vehicle front-rear direction. Both end portions of the upper frame 76 in the vehicle width direction are joined to these bead portions 82, and the frame main body portion 78 and the upper frame 76 constitute a closed cross section. A curved portion 76A that is curved toward the upper side in the vehicle vertical direction is provided at the end of the upper frame 76 on the front side in the vehicle longitudinal direction. The curved portion 76A is abutted against the rear wall portion 62C of the attachment portion 62 of the battery front cross member 20, and is joined by welding.

  The cover portion 80 of the lower frame 74 is curved so as to protrude downward in the vehicle front-rear direction, and extends from the frame main body portion 78 to the vehicle front-rear direction front side. The cover portion 80 is disposed on the lower side of the battery front cross member 20 in the vehicle vertical direction and covers the side surface of the head 72A of the vehicle body fixing bolt 72 over the entire circumference, and the flange portion 80A has a battery front cross member. 20 is abutted against the bottom wall portion 28B and joined by welding. Further, two insertion holes (insertion portions) 86 for inserting the vehicle body fixing bolts 72 in the vertical direction of the vehicle are formed in the bottom wall portion 80B of the cover portion 80 with an interval in the vehicle longitudinal direction. . Through this insertion hole 86, the vehicle body fixing bolt 72 can be inserted into the collar member 68, or the vehicle body fixing bolt 72 can be detached from the collar member 68.

  Next, the operation of the second embodiment will be described.

  As shown in FIG. 6, in the vehicle battery mounting structure 60 according to the present embodiment, the attachment portion 62 of the battery front cross member 20 is attached to the floor panel 38 via a collar member 68.

  Here, the collar member 68 passes through the collar through holes 64 and 66 formed in the bottom wall portion 62B and the top wall portion 62A of the mounting portion 62 in the vehicle vertical direction, and is welded to the edges of the collar through holes 64 and 66. It is joined with. In other words, the bottom wall portion 62B and the two top wall portions 28A of the mounting portion 62 are connected by the two collar members 68. As a result, the rigidity of the mounting portion 62 is improved, so that deformation (folding, bending, etc.) of the battery front cross member 20 associated with a vehicle collision (side collision, front collision, rear collision, etc.) is suppressed.

  Thus, the collar member 68 not only functions as a spacer between the floor panel 38 and the battery front cross member 20, but also functions as a reinforcing member that reinforces the battery front cross member 20. Thereby, since deformation of the battery front cross member 20 due to a vehicle collision is suppressed, it is possible to mount the battery pack 14 in a state in which the battery pack 14 is brought closer to the mounting portion 62 as compared with a configuration in which the collar member 68 is not provided. . Accordingly, it is possible to secure a wide space for mounting the battery pack 14 in the vehicle front-rear direction.

  Further, the battery under member 26 is coupled to the attachment portion 62 of the battery front cross member 20 to be reinforced. Thereby, the rigidity of the battery front cross member 20 further improves. Therefore, since the cross-sectional area of the battery front cross member 20 can be kept small, a mounting space in the vehicle front-rear direction of the battery pack 14 can be further secured.

  The battery under member 26 is provided with a cover portion 80 that covers the entire side surface of the head 72A of the vehicle body fixing bolt 72. By this cover portion 80, damage and damage to the head portion 72A of the vehicle body fixing bolt 72 due to chipping and contact with projections on the road surface are suppressed. Therefore, the detachability of the vehicle body fixing bolts 72 accompanying the replacement work of the battery pack 14 and the like is not impaired, and the maintainability of the battery pack 14 is ensured.

  Further, the cover portion 80 is provided with an insertion hole 86 corresponding to the vehicle body fixing bolt 72. The vehicle body fixing bolt 72 can be inserted into the collar member 68 from the insertion hole 86, or the vehicle body fixing bolt 72 can be removed from the collar member 68. Accordingly, the work of removing the battery under member 26 is not required, and the maintainability of the battery pack 14 is improved.

  The cover 80 only needs to cover at least a part of the side surface of the head 72A of the vehicle body fixing bolt 72. The arrangement and the range of covering the head 72A of the vehicle body fixing bolt 72 are as required. It can be changed as appropriate.

  Further, in the present embodiment, the attachment portion 62 is provided at the joint portion of the battery front cross member 20 with the battery sub cross member 22, but the attachment portion 62 may be provided at another portion of the battery front cross member 20.

Further, in the first and second embodiments, the battery side member 18 and the battery front cross member 20 serving as the cylindrical frame portions include the collar members 36 and 68 penetrating the mounting portions 28 and 62 in the battery pack 14. It is only necessary that at least a part of the battery pack 14 is disposed on the outer periphery of the battery pack 14 when viewed from the vehicle vertical direction so as not to interfere. That is, part of the battery side member 18 and the battery front cross member 20 may overlap the battery pack 14 in the vehicle vertical direction.
The cylindrical frame portion means a frame portion having a closed cross section in the battery frame, and the cross-sectional shape is not limited to the above-described shape, and may be a polygon such as a circle or a pentagon.

  Furthermore, the battery frame may be provided with at least one cylindrical frame portion. For example, the battery side member 18 extending in the vehicle front-rear direction described in the first embodiment and the second embodiment described above. Any one of the battery front cross members 20 extending in the vehicle width direction may be provided, or both the battery side member 18 and the battery front cross member 20 may be provided.

  Further, although the battery side member 18 and the battery front cross member 20 are positioned below the battery pack 14 in the vertical direction of the vehicle, for example, the battery side member 18 may be disposed outside the battery pack 14 in the vehicle width direction. The battery front cross member 20 may be disposed on the front side of the battery pack 14 in the vehicle front-rear direction.

  Moreover, although the vehicle body fixing bolts 44 and 72 are used as the fixing members, various fixing members can be used. For example, a locking pin or the like that fixes the collar member to the vehicle body by being locked through a collar member to a locked portion provided in the vehicle body may be used.

  Furthermore, the first and second embodiments can be applied to a hybrid vehicle or the like on which a battery is mounted.

  Although the first and second embodiments of the present invention have been described above, the present invention is not limited to such embodiments, and the first and second embodiments may be used in combination. Needless to say, the present invention can be implemented in various forms without departing from the scope of the invention.

10. Vehicle battery mounting structure 14 Battery pack (battery)
16 Battery frame 18 Battery side member (cylindrical frame part)
20 Battery front cross member (tubular frame)
22 Battery sub-cross member (support member)
26 Battery under member (support member)
28 Mounting portion 36 Color member 38 Floor panel (vehicle body)
44 Car body fixing bolt (fixing member)
44A Head (engagement part)
48 Coupling bracket 48C Cover part 56 Notch part (insertion part)
60 Battery mounting structure for vehicle 62 Mounting portion 68 Color member 72 Bolt for vehicle body fixing (fixing member)
72A Head (engagement part)
80 Cover part 86 Insertion hole (insertion part)

Claims (4)

A cylindrical frame portion disposed on the outer periphery of the battery as viewed from the vehicle vertical direction, and extends in a direction intersecting the cylindrical frame portion and coupled to the mounting portion of the cylindrical frame portion, and the battery is mounted in the vehicle vertical direction A support member that supports the battery from below, and a battery frame that supports the battery under the floor of the vehicle,
A collar member provided in the attachment portion , penetrating the attachment portion in the vehicle vertical direction, and an end portion on the vehicle vertical direction upper side extending to the vehicle body;
An engaging portion that is engaged with a lower end of the collar member in the vehicle vertical direction and protrudes downward from the mounting portion in the vehicle vertical direction , and is inserted into the collar member; A fixing member for fixing the frame to the vehicle body;
A cover portion provided at a coupling portion between the attachment portion and the support member, and covering a side surface of the engagement portion;
A vehicle battery mounting structure comprising: The vehicle battery mounting structure according to claim 1, wherein the cover portion is provided with an insertion portion for inserting the fixing member in a vehicle vertical direction. Attached across the attachment portion and the support member, and includes a coupling bracket joined to each of the attachment portion and the support member,
The vehicle battery mounting structure according to claim 1, wherein the cover portion is provided on the coupling bracket. 3. The vehicle battery mounting structure according to claim 1, wherein the support member is provided with the cover portion coupled to the attachment portion from the lower side in the vehicle vertical direction.

Images