JP5984052B2 - Battery pack positioning pin bracket - Google Patents

Description

  The present invention relates to an internal combustion engine and a hybrid vehicle including an electric motor as a power source, and includes a battery pack that stores a battery that stores driving power of the electric motor, and a fuel tank that stores fuel for the internal combustion engine. Pack positioning pin bracket.

  The battery pack for storing the driving power of the electric motor mounted in the hybrid vehicle and the vehicle in which the fuel tank of the internal combustion engine is arranged have a large installation space, weight, etc. for the battery pack and the fuel tank, and is mounted on the vehicle. In addition, various ideas have been made.

As a prior art regarding the arrangement of the battery pack and the fuel tank, there is one disclosed in Patent Document 1.
According to Patent Document 1, the battery pack is housed in the lower part of the rear seat provided above the floor panel, and the fuel tank is mounted between the suspension device and the vehicle structural member behind the rear seat and below the floor panel. Is made.
Also disclosed is a technique for mounting both the battery pack and the fuel tank below the floor panel.
By arranging the battery pack and the fuel tank in such a manner, the comfort in the vehicle compartment is not impaired.

JP 2009-29159 A

However, according to Patent Document 1, when the battery pack is disposed between the seat in the vehicle interior and the floor panel, the seat is removed when maintenance is performed on the battery module in the battery pack and the wiring device. It is necessary to start from the beginning, it takes more man-hours for maintenance work, and time and maintenance costs increase.
Furthermore, when a strong impact from the outside is applied, it is conceivable that the battery pack and the internal battery module are damaged and damage to the passengers is increased.
In addition, when the battery pack and the fuel tank are arranged in the floor panel recess below the seat, it is good as a measure against a stepping stone from the wheel, but in a limited space below the seat, a large battery pack and a fuel tank are provided. Is difficult to install, and if a large battery pack and a fuel tank are mounted, it is difficult to place the battery pack in the floor recess, and measures to prevent breakage of stepping stones are necessary.

  The present invention is an invention made in view of the above-described problems of the prior art, and is provided with a battery pack and a fuel tank under the floor to increase the safety of passengers and to prevent damage to the fuel tank due to stepping stones. An object of the present invention is to provide a positioning pin bracket for a battery pack that can be achieved while reducing costs.

In order to achieve the above object, the present invention provides a battery pack in which a battery module for the electric motor is housed below the floor panel of a vehicle using an internal combustion engine and an electric motor as power sources, behind the driving wheel, and on the driving wheel side. A fuel tank for storing the fuel of the internal combustion engine close to the rear of the battery pack in the vehicle front-rear direction, a mounting bracket for mounting the battery pack to the vehicle body, a mounting bracket attached to the mounting bracket, and the vehicle body of the battery pack With positioning pin bracket for positioning the mounting,
The positioning pin bracket has a projecting wall surface projecting outward from the mounting bracket in the vehicle width direction.

Further, according to the present invention, the positioning pin bracket includes a top surface for fixing the positioning pin in the vertical direction with the axis of the positioning pin,
The projecting wall surface that is suspended from the outer side of the top surface in the vehicle width direction and is fixed to the mounting bracket;
The fuel tank side edge of the overhanging wall faces outward in the vehicle width direction to a straight line position connecting at least the tire tread center of the drive wheel and the vehicle width direction outer edge of the fuel tank in a plan view of the vehicle. It is characterized by overhanging.

According to the present invention, the battery pack and the fuel tank are mounted on the vehicle body side mounting portion (side frame) in this order from the driving wheel side, and the most part of the fuel tank is a stepping stone from the driving wheel. It is protected by a mounting bracket that attaches the pack to the car body.
Further, the fuel tank side edge of the outer wall surface of the positioning pin bracket is at least a linear position connecting the tire tread center of the driving wheel and the outer edge in the fuel tank vehicle width direction in a plan view of the vehicle. Damage to the fuel tank due to stepping stones can be prevented.
Therefore, simply by devising the shape of the positioning pin bracket of the battery pack, it is possible to reliably protect the fuel tank from the stepping stones from the tire, so the increase in material cost of the electric pack positioning pin bracket can be suppressed, and the weight and cost increase It is possible to easily prevent the fuel tank from falling off.

  In the present invention, it is preferable that the positioning pin bracket is fixed to the mounting bracket closest to the fuel tank.

  With such a configuration, the mounting bracket closest to the fuel tank is located closest to a straight line connecting the center of the tire tread and the outer edge in the vehicle width direction of the fuel tank, and thus is formed on the positioning pin bracket. Since measures to prevent stepping stones can be obtained without increasing the shape of the overhanging wall surface, it is possible to reduce costs by reducing weight and suppressing material costs.

  In the present invention, it is preferable that the positioning pin bracket is provided at a symmetrical position with respect to the center line in the vehicle width direction.

By adopting such a configuration, the projecting wall surfaces formed on the positioning pin brackets are provided symmetrically in the vehicle width direction, so that both ends of the fuel tank in the vehicle width direction are either turned right or left when the vehicle is turned. Even in this case, it is possible to prevent damage caused by stepping stones from the wheels.
In addition, by providing the positioning pin bracket at the symmetrical position, it is easy to secure the battery pack in the vehicle width direction and the vehicle front-rear direction at the set position, and the vehicle weight balance can be secured as set. The running stability can be easily secured.

By adopting such a positioning pin bracket structure, even when a large-capacity battery pack and a large fuel tank are mounted, it is possible to prevent damage to the fuel tank due to stepping stones.
Furthermore, since the overhanging wall surface is formed on the positioning pin bracket of the battery pack, a positioning pin bracket of the battery pack that can reduce the weight and cost is provided.

The battery pack and fuel tank mounting condition figure of the hybrid vehicle to which the embodiment of the present invention is applied is shown. The battery pack external appearance perspective view which employ | adopted this invention is shown. The external appearance perspective view of the positioning pin bracket of this invention is shown. FIG. 2 is a detailed cross-sectional view taken along the line AA in FIG. 1. The AA cross section detail drawing of FIG. 2 is shown. The BB cross-section detailed drawing of FIG. 2 is shown. FIG. 7 is a Z perspective view of FIG. 6. The stepping stone protection range figure from the drive wheel in vehicle planar view is shown.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention only to specific examples unless otherwise specifically described. Only.
Moreover, when showing front-back, left-right, and up-down directionality, it describes based on the state seated in the driver's seat.

FIG. 1 shows a hybrid vehicle (hereinafter abbreviated as “vehicle” except when a hybrid vehicle is specified) 100 using an internal combustion engine (not shown) and an electric motor as power sources in which an embodiment of the present invention is used. The external appearance side view of is shown.
The vehicle 100 includes a battery pack 1 in which a plurality of battery modules 11 (see FIG. 7) are housed behind a front wheel 111 between a front wheel 111 that is a driving wheel of a vehicle body 110 and a rear wheel 112, and the battery pack. 1 is mounted with a fuel tank 8 for storing fuel of an internal combustion engine mounted close to the rear side in the vehicle front-rear direction.
The battery module 11 refers to a battery in which eight battery cells are grouped in series into one solid.

As shown in FIG. 2, the battery pack 1 has a substantially rectangular shape in plan view that is long in the vehicle front-rear direction. The battery pack 1 includes a battery module 11 serving as a driving power source for the electric motor, a battery pack tray 2 (see FIG. 7) on which the battery module 11 is placed, rainwater, dust, and the like in the battery pack tray 2. A cover device 9 that protects against intrusion and a connection circuit device (not shown) that connects each battery in the battery pack tray 2 are configured.
In FIG. 7, the battery pack tray 2 includes a battery pan 3 having a wall surface 32 with an outer peripheral edge of the bottom portion having a concave central portion extending upward, and wall surfaces on both side surfaces of the battery pan 3 in the vehicle width direction. The reinforcing frame 5 is fixed to 32, and a plurality of mounting brackets 6 for mounting the battery pack 1 to a side frame 120 disposed on the lower surface of the vehicle body 110.
Further, the positioning pin bracket 7 as shown in the perspective view of the outer appearance of the battery pack 1 on the both sides of the battery pack 1 closest to the fuel tank 8 has a center line in the vehicle width direction of the battery pack 1 as shown in FIG. It is fixed symmetrically about the center.
The positioning pin bracket 7 is fixed to the distal end portion (outside in the vehicle width direction) of the mounting bracket 6 on the fuel tank 8 side in the state shown in FIGS. Details will be described later.

4 shows a cross section taken along the line AA of FIG. 2, and the battery pack tray 2 shows a cross sectional structure attached to the side frame 120 on the vehicle body 110 side by the mounting bracket 6. FIG.
The battery pan 3 of the battery pack tray 2 is provided with a reinforcing frame 5 on the wall surface 32 of the battery pan 3 to maintain strength and rigidity.
The reinforcing frame 5 is joined to the inner peripheral surface of the wall surface 32 of the battery pan 3 and the outer surface of the wall surface 32 with the wall surface 32 sandwiched between the inner frame 52 and the inner frame 52. The wall surface 32, the inner frame 52, and the outer frame 51 are integrally fixed.

The inner frame 52 includes an A flange 521 whose upper portion is fixed to the upper portion of the wall surface 32, an A bent wall 522 bent in a direction away from the lower surface of the A flange 521, and an A bent wall 522 to the wall surface 32. A vertical wall 523 extending up to the bottom surface 31 while maintaining the separation of the B, and a B flange 524 bent from the A vertical wall 523 along the bottom surface 31 to the center side of the battery pan 3 and fixed to the bottom surface 31. Yes.
And the 1st closed section S1 is formed.

The outer frame 51 has a C flange 511 fixed to the wall surface 32 at a position facing the A flange 521 across the wall surface 32, and a B bent wall bent in a direction away from the wall surface 32 from the lower end of the C flange 511. 512, the B vertical wall 513 extending to the outer surface of the bottom surface 31 while maintaining the separation from the B bent wall 512 to the wall surface 32, and bent from the lower end of the B vertical wall 513 toward the wall surface 32 to face the B flange 524 And a D flange 514 that is fixed to the outer surface of the bottom surface 31.
A second closed section S2 is formed.
Therefore, in the reinforcing frame 5, the wall surface 32 and the inner frame 52 form a first closed section S 1, and the wall surface 32 and the outer frame 51 form a second closed section S 2.

The mounting bracket 6 has an upper bracket 61 having a base end attached to the B vertical wall 513 of the outer frame 51 and an other end attached to the vehicle body 110 side.
Lower bracket that forms one third closed cross section S3 with the upper bracket 61, with one fixed to the D flange 5 14 of the outer frame 51 and the other fixed to the lower surface of the base end side portion from the intermediate portion in the protruding direction of the upper bracket 61 62.

The upper bracket 61 has a hat shape having H flange portions 611 and 611 extending from the opening edge toward the front side and the rear side, with the cross-sectional shape in the vehicle longitudinal direction opening downward.
The base end side of the upper bracket 61 is bent upward along the B vertical wall 513 of the outer frame 51. The upper bracket 61 is fixed to the weld nut 515 with the fixing bolt 615 fixed to the second closed cross-section S2 side of the B vertical wall 513 through the mounting holes provided in the H flange portions 611 and 611 of the bent portions.

The other of the lower brackets 62 has a hat shape in which a cross-sectional shape in the vehicle front-rear direction opens upward and has J flange portions 621 and 621 from the opening edge toward the front side and the rear side.
And 3rd closed cross section S3 is formed by adhering H flange part 611,611 and J flange part 621,621.
Therefore, with the mounting bracket 6 having such a structure, when the weight of the battery acts on the battery pack tray 2, a bending force in the Y direction acts on the upper bracket 61. Then, a tensile force in the X direction acts on the lower bracket 62.
However, since the third closed cross section S3 is formed in the vicinity of the attachment portion of the upper frame 61 of the outer frame 51, the upward deformation of the attachment bracket 6 is suppressed, and rigidity and strength are ensured.

The top surface 612 of the mounting bracket 6 is attached to the bottom surface portion 121 of the side frame 120.
The side frame 120 extends in the vehicle front-rear direction on the outer side in the vehicle width direction of the battery pack 1 and is provided with a pair of left and right sides.
The cross-sectional shape of the side frame 120 in the vehicle width direction is a hat shape having an upper opening, and K flange portions 123 and 123 extending in the vehicle width direction from both end edges of the opening are formed.
The K flange portions 123 and 123 are fixed to the lower surface of the floor panel 118, and the side frame 120 and the floor panel 118 form a fourth closed section S4.
The mounting bracket 6 is fastened to the side frame 120 by fastening bolts 617 to a weld nut 620 fixed to the fourth closed cross section S4 side of the bottom surface portion 121 of the side frame 120.
The floor panel 118 is configured to increase the strength and rigidity of the floor panel 118 and the vehicle body 110 by forming a fourth closed section S4 with the side frame 120 and the floor panel 118.
Thus, the battery pack 1 is reliably fixed to a part with high strength and rigidity.

The positioning pin bracket 7 of the present invention is fixed to the front end portion in the vehicle width direction of the mounting bracket 6 provided at the position closest to the fuel tank of the battery pack 1.
FIG. 3 is an external perspective view of the positioning pin bracket 7 and shows the left side (LH) of the positioning pin bracket 7 attached to the left and right sides of the battery pack 1.
The positioning pin bracket 7 has a substantially hat shape in which the cross section in the vehicle width direction opens downward.
The positioning pin bracket 7 has a positioning pin 71 fitted in a positioning hole 122 (see FIG. 5) provided in the side frame 120, and the positioning pin 71 is fixed with the axis of the positioning pin 71 in the vertical direction so that the plan view is substantially omitted. A trapezoidal hat-shaped top surface 72, an outer wall surface 73, which is a protruding wall surface on the outer side in the vehicle width direction, extending downward from an outer edge in the vehicle width direction of the top surface 72, and a vehicle width direction of the top surface 72 An inner wall surface 74 extending downward from the inner edge, an outer flange 75 that is bent outward from the lower edge of the outer wall surface 73 in the vehicle width direction and is fixed to the H flange portion 611 of the mounting bracket 6, and a lower end of the inner wall surface 74 An inner flange 76 which is bent inward in the vehicle width direction from the edge and fixed to the mounting bracket 6 is provided.
The right side (RH) mounting is symmetrical with respect to FIG.

5 is a detailed sectional view taken along the line BB of FIG. 2, FIG. 6A is a view as viewed from the arrow Z in FIG. 5, and FIG. 6B is a view as viewed from the arrow R in FIG. The positioning structure of the battery pack 1 will be described.
Positioning members 124 having cylindrical positioning holes 122 opened in the vertical direction at positions facing the positioning pins 71 are provided on the left and right side frames 120 on the side frames 120 disposed on the outer side in the vehicle width direction of the battery pack 1. Each is arranged.
By inserting the positioning pin 71 into the positioning hole 122, the vehicle width direction and the front-rear direction position of the battery pack 1 are defined.
In addition, a tapered guide portion 125 having a large lower diameter is formed at the lower end portion (the side on which the positioning pin 71 is fitted) of the positioning member 124, so that the positioning pin 71 can be easily fitted. Yes.
FIG. 6A shows a view of FIG. 5Z, and a positioning pin bracket is fixed to the H flange portion 611 of the mounting bracket 6 on the fuel tank 8 side (vehicle rear side).
Then, as shown in FIG. 6B, the positioning pin bracket 7 is fixed to the H flange portion 611 in a state where the protruding end edge 73a of the outer wall surface 73 of the positioning pin bracket 7 extends outward in the vehicle width direction. Yes.

FIG. 7 is a detailed cross-sectional view taken along the line AA of FIG. 1 and shows a state where the battery pack 1 is mounted on the lower surface of the floor panel 118.
In the center of the floor panel 118 in the vehicle width direction, an A protrusion 118a that protrudes in the vehicle longitudinal direction and toward the vehicle interior is provided in order to increase the strength and rigidity of the floor panel 118.
In the present embodiment, it is necessary to increase the ground height of the lower surface of the battery pack 1 in order to improve the running performance of the vehicle 100.
Therefore, the B protrusion 91 of the cover device 9 of the battery pack 1 can be accommodated in the internal space of the A protrusion 118a of the floor panel 118, and the ground height of the bottom of the battery pack 1 can be increased accordingly.

When the battery pack 1 is mounted on the lower surface of the floor panel 118, the internal space of the A protrusion 118a cannot be visually observed by the battery pack 1.
For this purpose, the positioning pin bracket 7 is configured so that the B projecting portion 91 upward of the cover device 9 of the battery pack 1 fits in the set position of the internal space of the A projecting portion 118a.
A large number of these are arranged inside the A protrusion 118a in order to protect piping, electrical wiring, and the like necessary for traveling of the vehicle 100.

Further, the length L1 of the positioning pin 71 is longer than the height L2 of the B protrusion 91 of the cover device 9.
In this way, when the battery pack 1 is mounted on the back surface of the floor panel 118, the positioning pin 71 is fitted into the positioning hole 122 before the B protruding portion 91 enters the A protruding portion 118a. Since the mounting posture 1 is mounted at the set position, it is possible to prevent damage to piping, electrical wiring, and the like due to the B protruding portion 91 of the cover device 9.

In the case of the hybrid vehicle 100, a fuel tank 8 for storing the fuel of the mounted internal combustion engine is mounted.
While the fuel tank 8 wants to increase the capacity of the fuel tank as much as possible, in order to increase the ground clearance at the bottom of the fuel tank and improve running performance, Has a shape that protrudes from the battery pack in the vehicle width direction.

FIG. 8 shows a stepping stone protection range view from the drive wheels in plan view of the vehicle.
Between the front wheels 111 and the rear wheels 112, which are drive wheels disposed below the floor panel 118, the battery pack 1 and the fuel tank 8 are disposed adjacent to the battery pack 1 from the drive wheel side.
As described above, the battery pack 1 is mounted via the mounting bracket 6 between the side frames 120 fixed to the lower surface of the floor panel 118.

In FIG. 8, when the front wheel 111 is operated to turn left, the trajectory of the stepping stone caused by the front wheel 111 moves inward in the vehicle width direction from the position of the reference straight line LH0 around the tread center P of the front wheel 111.
The fuel tank 8 contacts the outer side in the vehicle width direction at the position of the first straight line LH1.
That is, the stepping stone from the front wheel 111 collides with the fuel tank 8 on the inner side in the vehicle width direction from the position of the first straight line LH1.
However, the position of the second straight line LH2, that is, the contact portion Q (see FIGS. 4 and 6B) between the tip of the mounting bracket 6 closest to the fuel tank 8 and the lower surface of the side frame 120, and the tread center P In the range on the inner side in the vehicle width direction from the straight line connecting, the stepping stone from the front wheel 111 does not hit the fuel tank 8.

As shown in FIG. 5 and FIGS. 6 (A) and 6 (B), the side frames 120 that are suspended from the floor panel 118 on both sides of the battery pack 1 in the vehicle front-rear direction and the both sides of the battery pack 1 are used. A plurality of mounting brackets 6 fixed to the side frame 120 protrude.
The mounting bracket 6 has a width in the vehicle front-rear direction and a height in the up-down direction that forms the third closed section S3.
Therefore, the stepping stone from the front wheel 111 is shielded by the battery pack 1, the mounting bracket 6, and the side frame 120 in the range in the vehicle width direction inner side than the second straight line LH 2 with respect to the fuel tank 8.
Further, regarding the stepping stone in the vertical direction of the vehicle 100, as shown in FIG. 1, the lower surface of the fuel tank 8 faces upward with respect to a straight line SL connecting the grounding portion of the front wheel 111 and the lower edge of the rear end of the battery pack 1. Since it is located, the problem with the stepping stone from the front wheel 111 does not occur.

Therefore, the positioning pin bracket 7 is attached to the tip of the attachment bracket 6 of the battery pack 1 closest to the fuel tank 8.
The outer wall surface 73, which is a protruding wall surface on the outer side in the vehicle width direction of the positioning pin bracket 7, has a protruding edge 73a on the fuel tank 8 side of the surface extending in the vehicle front-rear direction at least on the line of the first straight line LH1. It has a shape that extends to the end.
Thereby, stepping stones flying in the range of the first straight line LH1 and the second straight line LH2 are shielded by the outer wall surface 73, and damage to the fuel tank 8 can be prevented.
In the above description, the case where the front wheel 111 is steered to the left is described. However, when the front wheel 111 is steered to the right, the situation is the same as that of the left-turn steer.

By adopting such a structure, the battery pack 1 shields the stepping stone from the front wheel 111 that is the driving wheel from colliding with the fuel tank 8, and uses the positioning pin bracket 7 for the portion that cannot be compensated by the battery pack 1. By extending the outer wall surface 73, which is an overhanging wall surface provided outward, to the outside, the battery pack and the fuel tank are arranged under the floor to increase the safety of the passengers and It is possible to reduce the weight and cost by taking measures to prevent breakage caused by stepping stones.
The mounting bracket closest to the fuel tank is located closest to the straight line connecting the center of the tire tread and the outer edge of the fuel tank in the vehicle width direction, so that the shape of the overhanging wall formed on the positioning pin bracket is increased. Therefore, it is possible to reduce costs by reducing weight and reducing material costs.

  It can be optimally used for a hybrid vehicle equipped with a battery and a fuel tank.

DESCRIPTION OF SYMBOLS 1 Battery pack 2 Battery pack tray 3 Battery pan 5 Reinforcement frame 6 Mounting bracket 7 Positioning pin bracket 8 Fuel tank 9 Cover device 31 Bottom surface 32 Wall surface 51 Outer frame 52 Inner frame 61 Upper bracket 62 Lower bracket 71 Positioning pin 72 Top surface 73 Outside Wall surface (overhang wall surface)
73a Overhang edge (edge)
100 vehicles (hybrid vehicles)
110 Car body 111 Front wheel (drive wheel)
S1 1st closed section S2 2nd closed section S3 3rd closed section S4 4th closed section

Claims (3)

A battery pack in which a battery module for the electric motor is housed on the drive wheel side, below the floor panel of the vehicle using the internal combustion engine and the electric motor as power sources, and in the vehicle front-rear direction rear of the battery pack A fuel tank for storing the fuel of the internal combustion engine in proximity to the vehicle, a mounting bracket for mounting the battery pack to the vehicle body, and a positioning pin bracket attached to the mounting bracket for positioning the vehicle body mounting of the battery pack. Prepared,
The positioning pin bracket has a projecting wall surface projecting outward from the mounting bracket in the vehicle width direction ,
Furthermore, the positioning pin bracket includes a top surface for fixing the positioning pin in the vertical direction with the axis of the positioning pin,
The projecting wall surface that is suspended from the outer side of the top surface in the vehicle width direction and is fixed to the mounting bracket;
The fuel tank side edge of the overhanging wall is outside in the vehicle width direction up to a straight line connecting at least the center of the tire tread of the drive wheel and the outer edge in the vehicle width direction of the fuel tank in a plan view of the vehicle. The battery pack positioning pin bracket is characterized by projecting toward the side .   The battery pack positioning pin bracket according to claim 1, wherein the positioning pin bracket is fixed to the mounting bracket closest to the fuel tank. 3. The positioning pin bracket for a battery pack according to claim 1, wherein the positioning pin bracket is provided at a position symmetrical to the center line in the vehicle width direction.

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