JP2019059478A - Attachment structure of vehicle battery pack - Google Patents

Abstract

To provide an attachment structure of a vehicle battery pack which makes a load caused by deformation of a floor panel less likely to be transmitted to a battery module and can inhibit deformation of the battery module.SOLUTION: In an attachment structure of a vehicle battery pack, an inverter 10 is attached to a body case 11 through a bracket 14. An upper case 13 is formed with an expansion part 13B which expands to the vertical upper side of a vehicle 1 so that a center part of a battery module 9 as seen in a vehicle width direction becomes higher than both end parts as seen in the vehicle width direction. The inverter 10 is housed in the body case 11 so as to be located below the expansion part 13B. The expansion part 13B is installed so as to overlap with the bracket 14 in a vertical direction when viewed from above the vehicle 1 in the vertical direction.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a mounting structure for a vehicle battery pack, and more particularly, to a mounting structure for a vehicle battery pack mounted to a floor panel of a vehicle by a fastening portion.

  In a hybrid electric vehicle using an internal combustion engine and a motor as a drive source, an electric vehicle using a motor as a drive source, and the like, a battery pack containing a battery module serving as a power supply for driving is mounted.

As a conventional attachment structure of the battery pack, for example, the one described in Patent Document 1 is known.
The mounting structure of the battery pack includes a first case portion and a second case portion that accommodate the battery module inside by joining flange portions formed in a circumferential direction. A center plate (corresponding to a bracket) is attached between the first case portion and the second case portion so as to be sandwiched by the flange portion, and a battery module is attached to the center plate.

  In the battery pack mounting structure thus configured, the rigidity of the first case portion and the second case portion is enhanced by the center plate which is separate from the first case portion and the second case portion. The battery module can be protected.

JP, 2013-129391, A

In such a conventional vehicle battery pack mounting structure, the center plate is connected along the entire circumferential direction of the flange portions of the first case portion and the second case portion.
Thus, when the battery pack is deformed due to the deformation of the floor panel, the load is easily transmitted from the first case portion or the second case portion to the battery module via the center plate. Therefore, the battery module is easily deformed.

  The present invention has been made focusing on the above problems, and it is difficult for a load due to deformation of a floor panel to be transmitted to the battery module, thereby suppressing deformation of the battery module. The purpose is to provide a mounting structure.

The present invention has a battery pack attached to a floor panel of a vehicle, and the battery pack is joined to a lower case in which a first flange-shaped joint is formed in a circumferential direction and to the first joint in a circumferential direction And an upper case formed with a flange-shaped second joint portion, and a main body case accommodating the battery module, and a front end portion of the main body case in the longitudinal direction of the vehicle from a longitudinal front end portion of the vehicle A mounting structure for a vehicle battery pack, including a bracket to be installed, wherein the battery pack is fixed to the floor panel via fastening portions provided at both ends in the vehicle width direction of the main body case. The voltage equipment is attached to the main body case via the bracket, and the upper case is provided so that the central portion in the vehicle width direction is higher than the vehicle width direction both ends of the battery module. Forming a bulge bulge out downward improved side, and a that is housed in the body case of high voltage equipment to be located below the bulging portion.

  As described above, according to the present invention described above, load caused by deformation of the floor panel is less likely to be transmitted to the battery module, and deformation of the battery module can be suppressed.

FIG. 1 is a view showing an embodiment of a mounting structure for a vehicle battery pack of the present invention, and is a plan view of a rear portion of the vehicle. FIG. 2 is a view showing an embodiment of the mounting structure for a vehicle battery pack of the present invention, and is a sectional view taken along the line II-II in FIG. FIG. 3 is a view showing an embodiment of the mounting structure for a vehicle battery pack of the present invention, and is a rear view of the rear portion of the vehicle. FIG. 4 is a view showing an embodiment of a mounting structure of a vehicle battery pack of the present invention, and is an exploded perspective view of a floor panel and the battery pack. FIG. 5 is a view showing an embodiment of the mounting structure for a vehicle battery pack of the present invention, and is a cross-sectional view taken along the V-V direction of FIG. FIG. 6 is a view showing an embodiment of a mounting structure for a vehicle battery pack of the present invention, and is a top view of a lower case. FIG. 7 is a view showing an embodiment of the mounting structure for a vehicle battery pack of the present invention, and is a top view of the lower case with the bracket removed. FIG. 8 is a view showing an embodiment of the mounting structure for a vehicle battery pack of the present invention, and is an exploded perspective view of the lower case and the battery module.

Hereinafter, an embodiment of a mounting structure for a vehicle battery pack according to the present invention will be described using the drawings.
FIGS. 1-8 is a figure which shows the attachment structure of the battery pack for vehicles of one Embodiment concerning this invention. In FIGS. 1 to 8, the up, down, left, and right directions indicate directions as viewed from a driver who gets on the vehicle.

First, the configuration will be described.
1 and 2, a vehicle 1 such as an automobile includes a vehicle body 2, and the vehicle body 2 includes a floor panel 3 and a back panel 4 provided at the rear end of the floor panel 3 and extending in the vehicle width direction. Is equipped. Here, the directions of front and rear indicate directions in the front-rear direction of the vehicle 1.

  A rear seat 5 is provided in front of the back panel 4, and a space above the floor panel 3 between the back panel 4 and the rear seat 5 constitutes a luggage compartment 6. A recess 7 is formed in the floor panel 3, and the recess 7 is formed so as to be recessed downward in the vertical direction with respect to a height position at which the lower end portion of the rear seat 5 is fixed.

  In FIGS. 1 to 5, the battery pack 8 is accommodated in the recess 7. In FIG. 5, the battery pack 8 includes a battery module 9, an inverter 10, and a main body case 11 accommodating the battery module 9 and the inverter 10. In addition, the inverter 10 comprises the high voltage apparatus of this invention.

  The battery module 9 has a plurality of assembled batteries in which a plurality of single cells are assembled. Here, the unit cell may be a secondary battery such as a lithium ion battery or a nickel hydrogen battery, or a capacitor. The inverter 10 converts the DC voltage supplied from the battery module 9 into a three-phase AC voltage and outputs it to a motor (not shown).

  In FIG. 5, the main body case 11 includes a lower case 12 and an upper case 13. In FIGS. 6 to 8, the lower case 12 is formed with a joint 12 </ b> A, and the joint 12 </ b> A is formed in a flange shape in the circumferential direction of the lower case 12.

  In FIG. 1 and FIG. 4, a joint 13 A is formed in the upper case 13, and the joint 13 A is formed in a flange shape in the circumferential direction of the upper case 13. The joint 13A is joined to the joint 12A of the lower case 12 by the bolts 16A and 16B by being opposed to and aligned with the joint 12A.

  Thereby, the battery module 9 and the inverter 10 are accommodated in the main body case 11. Here, the bonding portion 12A constitutes a first bonding portion of the present invention, and the bonding portion 13A constitutes a second bonding portion of the present invention.

In FIGS. 5 and 6, a bracket 14 is provided on the main body case 11, and the bracket 14 is installed inside the main body case 11 so as to be sandwiched between the joint portions 12A and 13A.
In FIG. 6 to FIG. 8, fastening portions 15A and 15B are formed at both ends in the vehicle width direction of the lower case 12. The fastening portions 15A, 15B are formed in the same plane as the joint portion 12A, and the fastening portions 15A, 15B are fixed to the attachment portions 7A, 7B (see FIG. 4) formed on the inner wall of the recess 7 by bolts 16A. Ru.

  A fastening portion 15C is formed at the front end of the lower case 12. In FIG. 8, the fastening portion 15C is constituted by a bracket attached to the front wall portion 12B of the lower case 12, and the fastening portion 15C is a mounting portion 7C formed on the inner wall of the recess 7 by the bolt 16B (FIG. Fixed). Thus, the main body case 11 is fixed to the floor panel 3 through the fastening portions 15A to 15C. Here, the wall portion 12B constitutes a front side wall portion of the lower case vehicle of the present invention.

  The fastening portions 15A and 15B of the present embodiment constitute a first fastening portion of the present invention, and the fastening portion 15C constitutes a second fastening portion of the present invention. The fastening portions 15A to 15C may be formed not on the lower case 12 but on the upper case 13.

  In FIG. 6, the width of the bracket 14 in the vehicle width direction is shorter than the width of the lower case 12 in the vehicle width direction, and the bracket 14 is in the vehicle width direction of the lower case 12 from both ends in the vehicle width direction of the lower case 12. It is installed separately toward the direction.

  The front end 14a of the bracket 14 is fixed to the joint 12A of the lower case 12 by a bolt 17A, and the rear end 14b of the bracket 14 is fixed to the joint 12A of the lower case 12 by a bolt 17B. Here, the front end portion 14a of the present embodiment constitutes the front end portion in the front and rear direction of the vehicle of the bracket of the present invention, and the rear end portion 14b constitutes the rear end portion in the front and rear direction of the vehicle of the bracket of the present invention.

The front end portion 14 a of the bracket 14 is fastened to the joint portions 12 A and 13 A so as to be vertically sandwiched by the joint portion 12 A of the lower case 12 and the joint portion 13 A of the upper case 13. The rear end portion 14b of the bracket 14 is fastened to the joint portions 12A and 13A so as to be vertically sandwiched between the joint portion 12A of the lower case 12 and the joint portion 13A of the upper case 13.
Thus, the bracket 14 is installed from the front end to the rear end of the main body case 11.

  The rear end portion of the fastening portion 15C is installed at a position overlapping the bracket 14 in the vertical direction of the vehicle 1. That is, a part of the fastening portion 15C is installed at a position overlapping the bracket 14 in the vertical direction of the vehicle 1. The bracket 14 may overlap the front surface of the fastening portion 15C in the vertical direction of the vehicle 1.

  The battery module 9 is installed in the lower case 12, and the battery module 9 is installed below the bracket 14 so as to overlap the bracket 14 in the vertical direction of the vehicle 1.

  In FIG. 6, the bracket 14 includes a plurality of projections 14A and a plurality of recesses 14B extending in the front-rear direction of the vehicle 1, and the projections 14A and the recesses 14B extend from the front end 14a to the rear end 14b. It is formed and continued alternately in the vehicle width direction.

A pair of brackets 18A and 18B are provided on the upper surface of the bracket 14, and the brackets 18A and 18B are formed to have a U-shaped longitudinal cross section. The brackets 18A and 18B are installed side by side in the front-rear direction of the vehicle 1, and the brackets 18A and 18B extend in a direction orthogonal to the extending direction of the convex portion 14A and the concave portion 14B of the bracket 14.
An inverter 10 is provided above the brackets 18A and 18B, and the inverter 10 is attached to the brackets 18A and 18B by a plurality of bolts 19.

  In FIGS. 3 to 5, a bulging portion 13B is formed in the upper case 13, and as shown in FIG. 5, the bulging portion 13B is in the vehicle width direction with respect to both ends in the vehicle width direction of the battery module 9. It bulges out above the vehicle 1 so that the center part becomes high.

  The inverter 10 is housed in the main body case 11 so as to be located below the bulging portion 13B, and when viewed from above in the vertical direction of the vehicle 1, the bulging portion 13B overlaps the bracket 14 in the vertical direction Installed in

  The lower case 12 is provided with a bracket 20. The bracket 20 is a left end 14c of the bracket 14 in the vehicle width direction, and a portion between the brackets 18A and 18B in the front-rear direction of the vehicle 1 and a vehicle width of the lower case 12 The joint 12A of the left end 12a in the direction and the joint 13A (not shown in FIG. 6) of the left end in the vehicle width direction of the upper case 13 are connected.

  Here, the bracket 14 of the present embodiment constitutes a first bracket of the present invention, the brackets 18A and 18B constitute a second bracket of the present invention, and the bracket 20 is a third of the present invention. Configure the bracket.

  The connection position of the left end 20a of the bracket 20 and the joint 12A of the lower case 12 and the joint 13A of the upper case 13 (the joint 13A is not shown in FIG. 6) is installed forward with respect to the fastening parts 15A and 15B. It is done.

  The inverter 10 is provided on the bracket 20 side with respect to the center of the bracket 14 in the vehicle width direction, and the left end side of the inverter 10 is fixed to the bracket 14 by the bolt 19 via the bracket 20. There is.

  In FIG. 8, a plurality of convex portions 12 C are formed on the bottom surface of lower case 12, and convex portions 12 C extend in the vehicle width direction and are separated in the front-rear direction of vehicle 1.

  Base brackets 21A and 21B are provided on the upper surfaces of both widthwise ends of the convex portion 12C of the lower case 12, and the pedestal brackets 21A and 21B connect the convex portions 12C separated in the front-rear direction of the vehicle 1 to each other. doing.

  The battery module 9 is attached to the pedestal brackets 21A and 21B, and the battery module 9 is attached to the lower case 12 via the pedestal brackets 21A and 21B.

  In FIG. 7, the lower case 12 is provided with the battery module management device 22, and the battery module management device 22 is installed in a space surrounded by the bracket 14, the battery module 9 and the front wall 12 B of the lower case 12. .

  The battery module management device 22 is connected to the battery module 9 via the wire harness 23, and the battery module management device 22 manages the battery module 9.

  In FIG. 1, an intake duct 24, an intake fan 25 and an intake duct 26 are attached to the battery pack 8. The air intake duct 24 takes in air from the front side of the rear seat 5, and the air intake fan 25 introduces the air taken in from the air intake duct 24 from the air intake duct 26 to the main body case 11. Thereby, the battery module 9 and the inverter 10 are cooled.

The battery module management device 22 includes a computer, a temperature sensor, and the like (not shown). For example, when the temperature of the battery module 9 becomes equal to or higher than a predetermined temperature, the battery module management device 22 performs control to drive the intake fan 25. Do.
In FIG. 1, the vehicle 1 is provided with rear wheels 27L and 27R, and the rear wheels 27L and 27R are opposed in the vehicle width direction across the floor panel 3.

According to the mounting structure of battery pack 8 of the present embodiment, brackets 14 are spaced apart from both end portions in the vehicle width direction of main body case 11 inward in the vehicle width direction of main body case 11.
Furthermore, the front end 14a of the bracket 14 is fastened to the front ends of the joint 12A and the joint 13A, and the rear end 14b of the bracket 14 is fastened to the rear ends of the joint 12A and the joint 13A. 14 is installed from the front end to the rear end of the main body case 11. In addition to this, the battery module 9 is installed below the bracket 14 so as to overlap the bracket 14 in the vertical direction of the vehicle 1.

  Thereby, in the vehicle width direction of the main body case 11, the rigidity of the vehicle width direction center side of the main body case 11 having the bracket 14 is made higher than the rigidity of the vehicle width direction both ends of the main body case 11 having the fastening portions 15A and 15B. it can.

  Therefore, when the floor panel 3 is deformed due to large vibration in the vehicle width direction left and right largely in vertical direction during traveling on a rough road of the vehicle 1, etc., the main body case fastened to the floor panel 3 via the fastening portions 15A, 15B Loads due to deformation of the floor panel 3 can be absorbed at both end portions of the main body case 11 in the vehicle width direction by largely vibrating both end portions in the vehicle width direction 11 (the vibration directions are indicated by F1 and F2 in FIG. 3).

  In addition to this, the deformation of the portion of the main body case 11 below the bracket 14 provided with the battery module 9 can be suppressed. Therefore, it is difficult to transmit the load accompanying the deformation of the floor panel 3 to the battery module 9, and it is possible to suppress the deformation of the battery module 9.

  Furthermore, as shown in FIG. 2, when an external force F acts on the floor panel 3 from the rear of the vehicle 1, the bracket 14 can suppress deformation of the main body case 11 in the front-rear direction, and is provided below the bracket 14 It is possible to prevent the battery module 9 from colliding with the back wall 12D of the lower case 12 and deforming. As a result, the battery module 9 can be effectively protected.

  Further, according to the attachment structure of battery pack 8 of the present embodiment, fastening portion 15C is provided at the front end of lower case 12, and at least a portion of fastening portion 15C is installed at a position overlapping with bracket 14 in the vertical direction of vehicle 1. did.

  Thereby, the battery pack 8 can be firmly fixed to the floor panel 3. Therefore, the battery module 8 is prevented from moving relative to the floor panel 3 when the vehicle 1 travels on a rough road or when an external force F is applied to the floor panel 3, and the battery module housed in the main body case 11 9 can be protected by the main body case 11.

  Further, according to the attachment structure of battery pack 8 of the present embodiment, bracket 14 has a plurality of convex portions 14A and a plurality of concave portions 14B extending in the front-rear direction of vehicle 1, and convex portions 14A and concave portions 14B are It was made to continue alternately in the width direction.

Thus, the rigidity of the bracket 14 can be increased, so that the rigidity of both ends of the main body case 11 having the fastening portions 15A and 15B in the vehicle width direction of the main body case 11 is improved. The rigidity on the center side in the vehicle width direction can be further increased.
Therefore, the load due to the deformation of the floor panel 3 can be more effectively absorbed at both ends in the vehicle width direction of the main body case 11.

  In addition to this, the deformation of the portion of the main body case 11 below the bracket 14 provided with the battery module 9 can be more effectively suppressed. For this reason, it is difficult to effectively transmit the load due to the deformation to the floor panel 3 by the battery module 9, and the deformation of the battery module 9 can be more effectively suppressed.

  Further, when external force F acts on floor panel 3 from the rear of vehicle 1, it can be more effectively suppressed that body case 11 is deformed in the front-rear direction by bracket 14 having high rigidity, and provided below bracket 14 It can be more effectively suppressed that the battery module 9 collides with the back wall 12D of the lower case 12 and is deformed. As a result, the battery module 9 can be protected more effectively.

  Further, according to the mounting structure of battery pack 8 of the present embodiment, convex portion 14A and concave portion 14B are formed from front end portion 14a to rear end portion 14b of bracket 14, and joint portion 12A and joint portion 13A. The bracket 14 is attached to the main body case 11 so as to sandwich the convex portion 14A and the convex portion 14A from the vertical direction of the vehicle 1 by the above.

  Thereby, the rigidity of the bracket 14 can be more effectively enhanced, and the rigidity of the joint 12A and the joint 13A sandwiching the bracket 14 can be increased. Therefore, in the vehicle width direction of the main body case 11, the rigidity on the central side in the vehicle width direction of the main body case 11 having the bracket 14 is greater than the rigidity of both end portions in the vehicle width direction of the main body case 11 having the fastening portions 15A and 15B. It can be made larger.

  In addition, when external force F acts on floor panel 3 from the rear of vehicle 1, the rigidity of the joint 12A and joint 13A between the joint 12A and 13A can be increased, and the main body case 11 has front and back. It is possible to more effectively suppress deformation in the direction. As a result, the battery module 9 can be protected more effectively.

  Further, at a portion where the joint 12A, the joint 13A and the bracket 14 overlap in the vertical direction, an opening 28 is provided for communicating the outside of the main body case 11 with the inside of the main body case 11 by the convex 14A and concave 14B of the bracket 14 (FIG. 3) 6) after moving the cooling air W (see FIG. 6) inside the main body case 11 along the inner peripheral surface of the convex portion 14A in the front-rear direction of the vehicle 1. Can be discharged smoothly.

  In addition to this, when the liquid flows into the inside of the main body case 11 through the opening 28, the liquid can be smoothly discharged to the outside of the main body case 11 along the convex portion 14 A and the concave portion 14 B of the bracket 14. This can prevent the liquid from flowing into the battery module 9 and protect the battery module 9 from the liquid.

  Further, according to the attachment structure of battery pack 8 of the present embodiment, brackets 18A and 18B having a U-shaped longitudinal cross section are provided on bracket 14, and brackets 18A and 18B are arranged side by side in the front-rear direction of vehicle 1. In addition to this, the brackets 18A and 18B were extended in the direction orthogonal to the extending direction of the convex portion 14A and the concave portion 14B, and the inverter 10 was attached to the brackets 18A and 18B.

  As a result, the rigidity of the bracket 14 can be further enhanced by the brackets 18A and 18B, and bending and deformation of the brackets 18A and 18B can be suppressed by the inverter 10 attached to the brackets 18A and 18B.

  For this reason, the rigidity of the vehicle width direction center side of the main body case 11 having the bracket 14 can be more effectively increased with respect to the rigidity of the vehicle width direction both end portions of the main body case 11 having the fastening portions 15A and 15B. When the external force F acts on the floor panel 3 from the rear of the case, deformation of the main body case 11 in the front-rear direction can be more effectively suppressed by the bracket 14.

Further, according to the mounting structure of battery pack 8 of the present embodiment, upper case 13 has the upper portion in the vertical direction of vehicle 1 such that the central portion in the vehicle width direction is higher than both end portions in battery width direction of battery module 9. A bulge 13B is formed.
In addition to this, the inverter 10 is housed in the main body case 11 so as to be located below the bulging portion 13B, and when viewed from above in the vertical direction of the vehicle 1, the bulging portion 13B overlaps the bracket 14 in the vertical direction I did it.

  Thereby, the rigidity of the upper case 13 above the battery module 9 can be increased, and the vehicle width direction of the main body case 11 having the bracket 14 with respect to the rigidity of the vehicle width direction both end portions of the main body case 11 having the fastening portions 15A, 15B. The rigidity on the center side can be further increased.

  For this reason, the rigidity of the vehicle width direction center side of the main body case 11 having the bracket 14 can be more effectively increased with respect to the rigidity of the vehicle width direction both end portions of the main body case 11 having the fastening portions 15A and 15B. When the external force F acts on the floor panel 3 from the rear of the case, deformation of the main body case 11 in the front-rear direction can be more effectively suppressed by the bracket 14.

  Furthermore, since the inverter 10 is accommodated in the main body case 11 so as to be located below the bulging portion 13B, the enlargement of the upper case 13 can be prevented, and the enlargement of the battery pack 8 can be prevented. The carability of the pack 8 can be improved.

  Further, according to the attachment structure of battery pack 8 of the present embodiment, battery pack 8 is at the vehicle width direction left end portion 14c of bracket 14 and between the front-rear direction of vehicle 1 of the pair of brackets 18A and 18B. And the joint 20A of the lower case 12 in the vehicle width direction left end 12a of the lower case 12 is provided, and the joint position of the bracket 20 and the joint 12A is installed in front of the vehicle 1 with respect to the fastening part 15A. did. The vehicle width direction left end portion 14c of the bracket 14 constitutes a vehicle width direction end portion of the bracket of the present invention.

  Thereby, since the bracket 14 can be reinforced by the bracket 20, the rigidity on the central side in the vehicle width direction of the main body case 11 can be further increased with respect to the rigidity of both end portions in the vehicle width direction of the main body case 11 having the fastening portions 15A and 15B. .

  In addition to this, by providing the connecting position of the bracket 20 and the joint 12A in front of the fastening 15A, the joint on the front side with respect to the fastening 15A and the fastening 15A in the longitudinal direction of the vehicle 1 The difference in rigidity with the portion of the portion 12A can be increased.

  Therefore, when the floor panel 3 is deformed due to large vibration in the vehicle width direction left and right largely in vertical direction during traveling on a rough road of the vehicle 1, etc., the main body case fastened to the floor panel 3 via the fastening portions 15A, 15B The vehicle width direction both ends of 11 are vibrated more largely, and the load by the deformation of the floor panel 3 can be absorbed more effectively at the vehicle width direction both ends of the main body case 11.

Further, according to the attachment structure of battery pack 8 of the present embodiment, inverter 10 is provided offset to the center of bracket 14 in the vehicle width direction toward bracket 20.
Thus, the inverter 10 can be installed on the bracket 14 reinforced by the bracket 20 and having high rigidity, and the vibration of the inverter 10 having a relatively large weight can be effectively reduced.

  Further, according to the mounting structure of battery pack 8 of the present embodiment, a plurality of convex portions 12C extending in the vehicle width direction and separated in the front-rear direction of vehicle 1 are formed on the bottom surface of lower case 12 Base brackets 21A and 21B for connecting the convex portions 12C separated in the front-rear direction of the vehicle 1 are provided on upper surfaces of both end portions in the vehicle width direction 12C, and the battery module 9 is attached to the base brackets 21A and 21B.

  Thus, the rigidity of the bottom surface of lower case 12 can be increased to stably support battery module 9 on lower case 12. Therefore, when the floor panel 3 is deformed when the vehicle 1 travels on a rough road or the like, the deformation of the bottom surface of the lower case 12 can be suppressed, and the deformation of the battery module 9 can be suppressed. Therefore, the battery module 9 can be protected more effectively.

  Further, according to the attachment structure of the battery pack 8 of the present embodiment, the battery pack 8 has the battery module management device 22 that manages the battery module 9, and the battery module management device 22 includes the bracket 14 and the battery module 9. And it installed in the space enclosed by the wall part 12B of the front-back direction front side of the vehicle 1 of lower case 12. FIG.

  Thereby, when external force F acts on floor panel 3 from the rear of vehicle 1, bracket 14 prevents body case 11 from being deformed excessively in the front-rear direction, and battery module 9 is moved from the prescribed position to the front and rear of vehicle 1. Since movement in the forward direction can be suppressed, collision of the battery module management device 22 with the battery module 9 can be suppressed. Therefore, the battery module management device 22 can be protected.

  Further, since the battery module management device 22 can be prevented from colliding with the battery module 9, the battery module management device 22 can be installed in proximity to the battery module 9. Thereby, management of the wire harness 23 which connects the battery module management apparatus 22 and the battery module 9 can be simplified.

  While embodiments of the present invention have been disclosed, it will be apparent to those skilled in the art that changes may be made without departing from the scope of the present invention. All such modifications and equivalents are intended to be included in the following claims.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle, 3 ... Floor panel, 8 ... Battery pack, 9 ... Battery module, 10 ... Inverter (high voltage apparatus), 11 ... Body case, 12 ... Lower case, 12A ... Junction (1st junction), 12B ... Wall (front wall in the front-rear direction of the lower case), 12C ... Convex part, 13 ... Upper case, 13A ... Joint part (second joint part), 13B ... Expansion part, 14 ... Bracket (1st part) Brackets 14A: convex portion 14B: concave portion 14a: front end portion (bracket vehicle front and rear direction front end portion) 14b: rear end portion (bracket vehicle front and rear direction rear portion) 14c: vehicle width direction Left end (vehicle width direction end of bracket), 15A, 15B ... fastening portion (first fastening portion), 15C ... fastening portion (second fastening portion), 18A, 18B ... bracket (second bracket), 20 ... Bracket Third bracket), 21A, 21B ... bracket base, 22 ... battery module management apparatus

Claims (10)

Has a battery pack attached to the floor panel of the vehicle,
The battery pack includes a lower case in which a flange-shaped first joint is formed in the circumferential direction, and an upper in which a flange-shaped second joint is formed in the circumferential direction to be joined to the first joint. It has a case, and is constituted including a body case for housing a battery module, and a bracket installed from the front end in the front-rear direction of the vehicle to the rear end in the front-rear direction of the vehicle.
The mounting structure of a vehicle battery pack, wherein the battery pack is fixed to the floor panel via fastening portions provided at both ends in the vehicle width direction of the main body case.
High voltage equipment is attached to the body case via the bracket;
The upper case is formed with a bulging portion which bulges upward in the vertical direction of the vehicle such that a central portion in the vehicle width direction is higher than both end portions in the vehicle width direction of the battery module.
A mounting structure of a battery pack for a vehicle, wherein the high voltage apparatus is accommodated in the main body case so as to be located below the bulging portion.   The mounting structure of a battery pack for a vehicle according to claim 1, wherein the bulging portion is installed so as to overlap the bracket in the vertical direction when viewed from above in the vertical direction of the vehicle.   The said bracket is installed in the inside of the said main body case so that it may be pinched | interposed into a said 1st junction part and a said 2nd junction part, The vehicles for Claim 1 or 2 characterized by the above-mentioned. Battery pack mounting structure. The brackets are spaced apart from both end portions in the vehicle width direction of the main body case inward in the vehicle width direction of the main body case,
The front end in the longitudinal direction of the vehicle of the bracket is fastened to the front end in the longitudinal direction of the vehicle of the first joint portion and the second joint, and the rear end in the longitudinal direction of the vehicle of the bracket is the By fastening the first joint portion and the second joint portion to the rear end of the vehicle in the longitudinal direction,
The said battery module is installed below the said bracket so that it may overlap with the said bracket in the up-down direction of the said vehicle, The battery pack for vehicles of any one of Claim 1 to 3 characterized by the above-mentioned. Mounting structure.   The vehicle battery pack according to any one of claims 1 to 4, wherein the high-voltage device is provided at an upper portion of the bracket and accommodated below the bulging portion. Mounting structure. When the bracket is a first bracket, a pair of second brackets is provided on the upper surface of the first bracket,
The pair of second brackets are installed side by side in the longitudinal direction of the vehicle,
The mounting structure of a vehicle battery pack according to any one of claims 1 to 5, wherein the high voltage device is attached to the pair of second brackets. When fastening portions provided at both ends in the vehicle width direction of the main body case are taken as first fastening portions, a second fastening portion is attached to the front end in the front-rear direction of either the lower case or the upper case. Set up
The battery pack is a vehicle width direction end of the first bracket and a portion of the pair of second brackets between the front and rear direction of the vehicle, and a vehicle width direction end of the upper case and the lower case. A third bracket connecting the first joint of the part and the second joint,
The connection position between the third bracket and the first joint portion and the second joint portion is disposed forward in the front-rear direction of the vehicle with respect to the first fastening portion. The mounting structure of the battery pack for vehicles as described in 6.   The vehicle battery pack mounting structure according to claim 7, wherein the high voltage device is provided on the third bracket side with respect to a central portion in the vehicle width direction of the first bracket. . A plurality of convex portions extending in the vehicle width direction and separated in the front-rear direction of the vehicle are formed on the bottom surface of the lower case,
A bracket for pedestal which connects the convex portions of the lower case separated in the front-rear direction of the vehicle is provided on the upper surfaces of both widthwise end portions of the convex portions of the lower case, and the battery module is attached to the pedestal bracket The attachment structure of the battery pack for vehicles of any one of the Claims 3-8 characterized by the above-mentioned. The battery pack has a battery module management device that manages the battery module,
9. The battery module management device according to claim 6, wherein the battery module management device is installed in a space surrounded by the first bracket, the battery module, and a front wall of the lower case in the front-rear direction of the vehicle. The attachment structure of the battery pack for vehicles of any one statement.

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