JP6531460B2 - Vehicle battery pack protection structure - Google Patents

Description

  The present invention relates to a protection structure for a battery pack of a vehicle, and more particularly to a protection structure for a battery pack housed in a recess of a floor panel of the vehicle.

  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.

  In a hybrid electric car or electric car equipped with this battery pack, it is necessary to shut off the high voltage circuit in order to prevent an electric shock of the worker at the time of maintenance or emergency, so the high voltage circuit is shut off to the battery pack A service plug (circuit breaker) is provided.

  In the battery pack provided with the service plug, it is necessary to prevent the service plug from interfering with the in-vehicle component or the body component at the time of a collision of the vehicle or the like while facilitating the insertion and removal of the service plug from the luggage compartment side.

  As a conventional protection structure of this type of battery pack for vehicles, what was described in patent documents 1 is known. In the vehicle battery pack protection structure described in Patent Document 1, the battery pack is installed above the rear floor panel and in a luggage compartment sandwiched between the rear seat and the back panel.

A service plug is provided on the upper surface of the battery pack so as to be located forward of the vehicle in the front-rear direction and project upward from the upper surface of the battery pack, and the service plug is inserted into and removed from the battery pack in the space above the battery pack It can be performed.
Further, a protector is provided at the rear of the service panel to prevent the battery pack from interfering with the in-vehicle component or the vehicle component by causing the protector to collide with the in-vehicle component or the vehicle component when the vehicle collides.

JP 2014-101037

  In such a conventional battery pack protection structure for a vehicle, a service plug is provided on the top surface of the battery pack so as to be located forward of the vehicle in the front-rear direction and project upward from the top surface of the battery pack.

  Thus, when the worker accesses the service plug from the back panel side (the rear side in the front-rear direction of the vehicle), it is necessary to reach for the depth of the luggage compartment or near the rear seat. For this reason, the worker needs to access the service plug by groping and perform the work of inserting and removing the service plug, and the workability of the work of inserting and removing the service plug is lowered.

  In addition, when the in-vehicle component is installed above the battery pack, the in-vehicle component interferes with the access to the service plug, which further reduces the workability of the work of inserting and removing the service plug.

  In addition, when an in-vehicle component is installed above the battery pack, if the vehicle receives an external force from the rear and the in-vehicle component moves forward in the front-rear direction of the vehicle, the in-vehicle component passes over the protector and protrudes above the vehicle Contact the service plug.

  The present invention has been made focusing on the above problems, and it is possible to protect the service plug when an external force acts on the vehicle while improving the workability of the work of inserting and removing the service plug. It aims at providing a protection structure of a battery pack.

The present invention has a battery pack housed in a recess formed in a floor panel of a vehicle,
The vehicle battery pack protection structure according to claim 1, wherein the battery pack includes a battery case, a battery module housed in the battery case, and a service plug that temporarily shuts off the power of the battery module. The panel comprises a rear floor panel sandwiched between a back panel extending in the width direction of the vehicle at a rear end in the front and rear direction of the vehicle and a rear seat installed forward in the front and rear direction with respect to the back panel. The recessed portion is formed so as to be recessed downward in the vertical direction with respect to the height position at which the lower end portion of the rear seat is fixed to the rear floor panel, and the spare tire vertically upward with respect to the battery pack accommodated in the recessed portion. It was placed at the top of the battery case, and an opening is formed in the width direction sides of the vehicle, The service plug may be opened by inclining the service plug such that the upper end is directed outward in the width direction of the vehicle and obliquely upward with respect to the vertical axis with respect to the lower end of the service plug. In the state where the vehicle is viewed from above in the vertical direction, the service plug passes through the center of the spare tire and the first virtual line extending in the width direction of the vehicle and the vehicle of the spare tire And a second imaginary line extending in the width direction of the vehicle through the rear end portion in the front-rear direction of the vehicle, which is positioned outward of the outer periphery of the spare tire in the width direction of the vehicle .

  As described above, according to the present invention, the opening is formed at the upper portion of the battery case and at the side in the width direction of the vehicle, and the upper end is outside the width direction of the vehicle with respect to the lower end of the service plug. Also, by inclining the service plug so as to face obliquely upward with respect to the vertical axis, the service plug can be inserted into and removed from the opening.

This allows the worker to easily access the service plug from the rear of the vehicle. Furthermore, by tilting the service plug, the amount of movement when inserting and removing the service plug into the opening can be increased.
Therefore, the workability of the work of inserting and removing the service plug from the opening of the battery case can be improved.

  In addition, since the service plug is inserted into the opening that opens at the lateral side of the vehicle, the service plug can be installed in front of the rear wall of the battery case. As a result, when the vehicle receives an external force from the rear, direct interference between the in-vehicle component or the vehicle component and the service plug can be prevented, and the service plug can be protected.

FIG. 1 is a view showing an embodiment of a protection structure of a battery pack of a vehicle according to the present invention, and is a plan view of a rear portion of the vehicle. FIG. 2 is a view showing an embodiment of a protection structure for a battery pack of a vehicle according to the present invention, and is a rear view of the vehicle viewed from the II-II direction of FIG. FIG. 3 is a view showing an embodiment of a protection structure for a battery pack of a vehicle according to the present invention, and is a plan view of a rear portion of the vehicle with a spare tire removed. FIG. 4 is a view showing an embodiment of a protection structure for a battery pack of a vehicle according to the present invention, viewed from the II-II direction of FIG. 1 with the spare tire removed (the spare tire is shown by a phantom line). Is a rear view of the vehicle. FIG. 5 is a view showing an embodiment of a protection structure for a battery pack of a vehicle according to 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 protection structure for a battery pack of a vehicle according to the present invention, and is a perspective view of a battery case. FIG. 7 is a view showing an embodiment of a protection structure for a battery pack of a vehicle according to the present invention, and is a longitudinal sectional view of a rear portion of a vehicle having different service plug attachment positions. It corresponds to a visual sectional view.

Hereinafter, an embodiment of a protection structure for a battery pack of a vehicle according to the present invention will be described using the drawings.
FIGS. 1-7 is a figure which shows the protection structure of the battery pack of the vehicle of one Embodiment which concerns on this invention. In FIGS. 1 to 7, 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.
In FIG. 1, a vehicle 1 such as an automobile includes a vehicle body 2 and a back panel 3 extending in the width direction of the vehicle 1 (hereinafter simply referred to as the vehicle width direction) at the rear end of the vehicle 1 in the front and rear direction Is formed. Here, the directions of front and rear indicate directions in the front-rear direction of the vehicle 1.

  A rear seat 4 is provided in front of the back panel 3, and the vehicle body 2 has a rear floor panel 5 sandwiched between the back panel 3 and the rear seat 4. A recess 6 is formed in the rear floor panel 5, and the recess 6 is formed so as to be recessed downward in the vertical direction with respect to the height position at which the lower end 4a (see FIG. 5) of the rear seat 4 is fixed. Here, the rear floor panel 5 of the present embodiment constitutes the floor panel of the present invention.

  In FIGS. 2 to 4, the battery pack 7 is accommodated in the recess 6. The battery pack 7 includes a battery module 8, an inverter 9, and a battery case 10 accommodating the battery module 8 and the inverter 9.

The battery module 8 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 9 converts the DC voltage supplied from the battery module 8 into a three-phase AC voltage and outputs it to a motor (not shown).

  In FIG. 1, FIG. 2, FIG. 4 and FIG. 5, a spare tire 11 is provided vertically above the battery pack 7. Spare tire 11 includes a wheel 12 having a recess 12A, and an annular rubber tire 13 attached to the outer peripheral portion of the wheel 12.

  1 to 5, the battery pack 7 is provided with a service plug 14 as a circuit breaker. The battery module 8 is a high voltage circuit, and the high voltage circuit is established by inserting the service plug 14 into a connection portion (not shown) of the battery module 8 when the vehicle 1 is driven.

  In addition, at the time of maintenance or emergency of the vehicle 1, the electric power of the battery module 8 is temporarily cut off by removing the service plug 14 from the connection portion of the battery module 8, and an electric shock of the worker is prevented.

In FIG. 6, an opening 15 is formed in the battery case 10, and in FIGS. 2 to 4, the opening 15 is formed in the upper portion of the battery case 10 and on the left side in the vehicle width direction. .
The service plug 14 is attached to the connecting portion of the battery module 8 by inclining the upper end 14b to the outer side in the vehicle width direction with respect to the lower end 14a of the service plug 14 and obliquely upward with respect to the vertical axis. The service plug 14 is configured to be freely inserted into and removed from the opening 15.

  In FIG. 1, in a state where the vehicle 1 is viewed from above in the vertical direction, the service plug 14 passes through the center of the spare tire 11 and passes through the first virtual line 16 extending in the vehicle width direction and the rear end portion of the spare tire 11. The outer peripheral portion 11A of the spare tire 11, that is, the outer peripheral portion of the rubber tire 13 is located outward in the vehicle width direction with respect to the second virtual line 17 extending in the vehicle width direction.

In FIG. 4 and FIG. 5, the battery case 10 is provided with a protrusion 10 </ b> A that protrudes in the vertical direction above the opening 15. The projecting portion 10A has a base end 10a located above the upper end of the recess 6, and is formed in a tapered shape from the base end 10a toward the upper end 10b vertically upward.
The protrusion 10A is inserted into the recess 12A of the spare tire 11, and the recess 12A covers the outer peripheral surface of the protrusion 10A.

  In FIG. 2 and FIG. 4, the rear floor panel 5 is formed from the lower end of the horizontal wall 5A formed at the same height position as the upper end of the recess 6, the inclined wall 5B inclined obliquely downward from the horizontal wall 5A, and the lower end of the inclined wall 5B. And a bottom wall 5C extending horizontally and on which the battery pack 7 is mounted. Thus, the base end 10 a of the protrusion 10 A is located above the horizontal wall 5 A, which is the upper end of the recess 6. Here, the inclined wall 5B and the bottom wall 5C constitute the recess 6 of the present invention.

  In FIG. 2 and FIG. 4, brackets 18A, 18B are provided on the inner peripheral surface in the vehicle width direction of the inclined wall 5B, and the height position of the upper end of the brackets 18A, 18B is formed lower than the horizontal wall 5A. ing.

  In FIG. 3, a bracket 18C is provided on the inner peripheral surface of the front end of the inclined wall 5B, and the bracket 18C is separated at an angle of about 90 ° with respect to each of the brackets 18A and 18B.

The rear floor panel 5 comprises a first bracket 19 and a second bracket 20. The first bracket 19 extends in the vehicle width direction on the rear side relative to the service plug 14, and the ends in the extending direction of the first bracket 19 are fixed to the brackets 18 A and 18 B, whereby both widthwise ends of the recess 6 Are linked.
The second bracket 20 extends forward from the first bracket 19 and connects the first bracket 19 and a bracket 18 C corresponding to the front end of the recess 6.

  In FIG. 5, the second bracket 20 is inserted into the hollow portion 12A of the spare tire 11 so as to straddle the upper side of the projecting portion 10A of the battery case 10, and the spare tire 11 has a first lower end. In contact with the bracket 19 and the second bracket 20, the second bracket 20 is fastened by a bolt 21. Thus, the spare tire 11 is firmly attached to the first bracket 19 and the second bracket 20.

  1 and 3, the vehicle 1 is provided with a pair of rear wheels 22L and 22R on both sides in the vehicle width direction. 2 and 4, the vehicle body 2 includes rear wheel house inner panels 23L and 23R, and the rear wheel house inner panels 23L and 23R are provided inward in the vehicle width direction with respect to the rear wheels 22L and 22R, An upper portion of the rear floor panel 5 is curved outward in the vehicle width direction.

  In FIG. 5, a bracket 18D is provided at the front end of the battery case 10. The battery case 10 is fixed to the bracket 18C by the bracket 18D, and both ends in the width direction of the battery case 10 are fixed to the brackets 18A and 18B (see FIGS. 2 and 4). A gap is formed between the wall 5C.

  In FIG. 1, in a state where the vehicle 1 is viewed from above in the vertical direction, the service plug 14 is installed at a position overlapping the rear wheel house inner panels 23L and 23R in the vehicle width direction, as shown in FIG. The plug 14 is inclined toward the rear wheel house inner panel 23L.

  In FIG. 4, a first virtual plane 24 extending obliquely upward of the vehicle 1 along the lower surface in the extending direction of the service plug 14 and a second virtual surface extending obliquely upward of the vehicle 1 along the upper surface in the extending direction of the service plug 14. In the case where the virtual plane 25 is set, the service plug 14 is installed in the space 26 sandwiched by the intersection portion 5D where the inclined wall 5B and the horizontal wall 5A intersect and the spare tire 11.

  In the service plug 14, in the space 26, the first virtual plane 24 passes vertically above the intersection 5D, and the second virtual plane 25 is wider than the outer width of the spare tire 11 in the vehicle width direction. It is inclined to pass the direction outward.

  1 and 2, the downstream end of the intake pipe 31 is connected to the battery case 10, and the downstream end of the intake pipe 33 is connected to the upstream end of the intake pipe 31 via the intake fan 32. Thereby, when the intake fan 32 is driven, the air taken in from the upstream end of the intake pipe 33 can be introduced from the intake pipe 33 into the battery case 10 through the intake pipe 31 to cool the battery module 8 and the inverter 9. . In addition, upstream and downstream refer to upstream and downstream with respect to the flow direction of air.

According to the protection structure of battery pack 7 of the present embodiment having the above configuration, battery pack 7 is accommodated in recess 6 formed in rear floor panel 5 of vehicle 1, and battery pack 7 is a battery case. 10, a battery module 8 and an inverter 9 accommodated in a battery case 10, and a service plug 14 for temporarily interrupting the power of the battery module 8.
As a result, the capacities of the battery module 8 and the inverter 9 can be increased as much as the battery pack 7 can be accommodated in the recess 6.

  Further, according to the protection structure of battery pack 7 of the present embodiment, opening 15 is formed at the upper part of battery case 10 and at the side in the vehicle width direction, and the upper end with respect to lower end 14a of service plug 14 The service plug 14 can be freely inserted into and removed from the opening 15 by inclining the service plug 14 so that the portion 14 b faces outward in the vehicle width direction and obliquely upward with respect to the vertical axis.

Thereby, the worker can easily access the service plug 14 from the rear of the vehicle 1. Furthermore, by tilting the service plug 14, the amount of movement when inserting and removing the service plug 14 into the opening 15 can be increased.
For this reason, the workability of the work of inserting and removing the service plug 14 with respect to the opening part 15 of the battery case 10 can be improved.

  In addition, since the service plug 14 is inserted into the opening 15 opened to the side in the vehicle width direction, the service plug 14 can be installed in front of the rear wall of the battery case 10. Thereby, as shown in FIG. 1 and FIG. 5, spare tire 11 when vehicle 1 receives external force F from the rear and back panel 3 is deformed from the normal position shown by the two-dot chain line to the deformation position shown by the dotted line. Can be prevented from directly interfering with the service plug 14 and the vehicle component such as the back panel 3 etc., and the service plug 14 can be protected.

  Further, according to the protection structure of battery pack 7 of the present embodiment, the floor panel is installed in front of back panel 3 extending in the vehicle width direction at the rear end of vehicle 1 and rear panel 4 with respect to back panel 3. The recessed portion 6 is formed to be recessed downward in the vertical direction with respect to the height position at which the lower end portion 4 a of the rear seat 4 is fixed to the rear floor panel 5.

  In addition to this, the spare tire 11 is installed vertically above the battery pack 7 housed in the recess 6 and the service plug 14 is in the center of the spare tire 11 when the vehicle 1 is viewed from above in the vertical direction. Between the first virtual line 16 extending in the vehicle width direction through the second virtual line 17 extending in the vehicle width direction through the outer peripheral portion 11A of the rear end of the spare tire 11 and the outer periphery of the spare tire 11 It is located outward in the vehicle width direction than the portion 11A.

  Thus, when the vehicle 1 receives an external force from the rear and the back panel 3 moves forward, the back panel 3 can be brought into contact with the spare tire 11. Therefore, the back panel 3 can be prevented from coming into direct contact with the rear end portion of the battery case 10 or the service plug 14, and the battery pack 7 and the service plug 14 can be protected.

  Further, when the vehicle 1 receives an external force from the rear and the back panel 3 moves forward, the back panel 3 and the spare tire 11 contact, and the spare tire 11 has moved forward by the impact of the back panel 3 by any chance. Do.

  In this case, since the service plug 14 is located rearward of the first virtual line 16, the outer peripheral portion 11A of the spare tire 11 can be prevented from contacting the service plug 14. Therefore, the service plug 14 can be protected from the spare tire 11.

  Further, according to the protection structure of battery pack 7 of the present embodiment, battery case 10 has projecting portion 10A projecting upward in the vertical direction with respect to opening 15, and spare tire 11 is perpendicular to projecting portion 10A. It has a recess 12A into which the upper part of the direction is inserted.

  In addition to this, the projecting portion 10A has a base end 10a located above the upper end (horizontal wall 5A) of the recess 6, and is tapered from the base end 10a toward the upper end 10b in the vertical direction The spare tire 11 is installed above the battery pack 7 so that the recess 12A covers the protrusion 10A.

Thereby, when the vehicle 1 receives an external force from the rear and the back panel 3 moves forward, the spare tire 11 can be brought into contact with the projecting portion 10A, and the forward movement of the spare tire 11 can be restricted. The back panel 3 is brought into contact with the rubber tire 13 of FIG. Therefore, it is possible to prevent the back panel 3 from moving forward excessively.
Therefore, the back panel 3 can be prevented from moving excessively to the service plug 14 side, and the service plug 14 and the battery pack 7 can be protected.

  Furthermore, since the spare tire 11 is installed above the battery pack 7 so that the recess 12A covers the projection 10A, the spare tire 11 can be easily assembled to the battery pack 7.

  Further, when the spare tire 11 is assembled to the battery pack 7, the spare tire 11 can be prevented from colliding with the service plug 14 by mistake, and the service plug 14 can be protected when the spare tire 11 is assembled.

  Further, according to the protection structure of battery pack 7 of the present embodiment, rear floor panel 5 extends in the vehicle width direction on the rear side with respect to service plug 14 to connect both widthwise end portions of recess 6. And a second bracket 20 extending forward from the first bracket 19 and connecting the first bracket 19 and the front end of the recess 6.

In addition to this, the second bracket 20 is inserted into the inside of the recess 12A so as to straddle the upper side of the protrusion 10A, and the spare tire 11 is fastened to the second bracket 20.
Thus, when the vehicle 1 receives an external force from the rear, the first bracket 19 connecting both widthwise ends of the recess 6 can prevent the recess 6 from being excessively deformed, thereby protecting the battery pack 7. Can.

  Further, since the first bracket 19 extends in the vehicle width direction on the rear side of the service plug 14, the back panel 3 is made to collide with the first bracket 19 when the vehicle 1 receives an external force from the rear side. It can be made difficult to deform excessively in front of 1. Therefore, the back panel 3 can be prevented from being deformed to the service plug 14 side, and the service plug 14 can be protected.

  Further, according to the protection structure of battery pack 7 of the present embodiment, second bracket 20 extending from first bracket 19 forward and connecting first bracket 19 and the front end of recess 6 is provided. Since the spare tire 11 is fastened to the second bracket 20, the spare tire 11 can be firmly fixed to the second bracket 20.

  Thereby, when the vehicle 1 receives an external force from the rear, by causing the back panel 3 to collide with the rubber tire 13 of the spare tire 11, the spare tire 11 can absorb an impact, and the battery pack 7 and the service plug 14 can be protected. .

  Further, according to the protection structure of battery pack 7 of the present embodiment, vehicle 1 is provided inward in the vehicle width direction with respect to pair of rear wheels 22L, 22R and rear wheels 22L, 22R provided on both sides in the vehicle width direction. Provided in the rear floor panel 5 and the upper portion thereof is curved outward in the vehicle width direction, and the service plug 14 is provided in a state where the vehicle 1 is viewed from above in the vertical direction, It is installed at a position overlapping the rear wheel house inner panels 23L, 23R in the vehicle width direction.

  Thereby, when external force is applied from the rear of the vehicle 1, the vehicle body 2 around the rear wheel house inner panels 23L, 23R due to the surface rigidity of the rear wheel house inner panels 23L, 23R having relatively high rigidity in the vehicle body 2. Can be suppressed from being deformed. Therefore, the service plug 14 can be protected more effectively.

  Further, according to the protection structure of battery pack 7 of the present embodiment, rear floor panel 5 is inclined obliquely downward from horizontal wall 5A formed at the same height position as the upper end of recess 6 and horizontal wall 5A. A wall 5B and a bottom wall 5C extending horizontally from the lower end of the inclined wall 5B and on which the battery pack 7 is mounted are provided.

  Then, a first virtual plane 24 extending obliquely upward of the vehicle 1 along the lower surface in the extending direction of the service plug 14 and a second virtual extending obliquely upward of the vehicle 1 along the upper surface in the extending direction of the service plug 14 In the case where the plane 25 is set, the service plug 14 is located in the space 26 sandwiched by the intersection portion 5D where the inclined wall 5B and the horizontal wall 5A intersect and the spare tire 11, and the first virtual plane 24 And the second virtual plane 25 are inclined so as to pass outward in the vehicle width direction than the outer peripheral portion of the spare tire 11 in the vehicle width direction while passing vertically above the crossing portion 5D.

  Thus, when the service plug 14 is inserted into and removed from the opening 15 of the battery case 10, the service plug 14 can be prevented from contacting the spare tire 11 and the recess 6. Therefore, the amount of movement when inserting and removing the service plug 14 into the opening 15 can be effectively increased, and the workability of the operation of inserting and removing the service plug 14 from the opening 15 of the battery case 10 is made more effective. It can improve.

  Further, when the vehicle 1 receives an external force from the rear and the back panel 3 moves forward, the back panel 3 and the spare tire 11 come in contact, and the spare tire 11 should move forward by the impact of the back panel 3 In addition, the outer peripheral portion 11A of the spare tire 11 can be prevented from contacting the service plug 14. Therefore, the service plug 14 can be protected from the spare tire 11.

  In the protection structure of battery pack 7 of the present embodiment, the height position of upper end portion 14 b of service plug 14 is positioned vertically above horizontal wall 5 A, but the present invention is not limited to this. Absent.

  For example, as shown in FIG. 7, the service plug 14 may be inclined and installed so that the height position of the upper end portion 14b of the service plug 14 is positioned vertically below the horizontal wall 5A.

  In this way, the amount of protrusion of the service plug 14 from the opening 15 can be reduced, and the service plug 14 is prevented from contacting the back panel 3 or the spare tire 11 when the vehicle 1 receives an external force from the rear. And the service plug 14 can be protected more effectively.

  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 ... back panel, 4 ... rear seat, 4a ... lower end part (lower end part of rear seat), 5 ... rear floor panel (floor panel), 5A ... horizontal wall, 5B: Inclined wall (recessed portion), 5C: bottom wall (recessed portion), 5D: intersection, 6: recessed portion, 7: battery pack, 8: battery module, 10. Battery case, 10A: projection, 10a: base end (base end of projection), 10b: upper end (upper end of projection), 11: spare tire, 11A. .. outer periphery (outer periphery of spare tire) 14: service plug 14 a lower end (lower end of service plug) 14 b upper end (upper end of service plug) 15. ... 16 opening first imaginary line 17 second imaginary line 19 first bracket 20 second bracket 22 L, 22 R rear wheel , 23L, 23R ... rear wheel Usu inner panel, 24 ... first virtual plane, 25 ... second imaginary plane, 26 ... space

Claims (6)

A battery pack housed in a recess formed in a floor panel of the vehicle;
The battery pack is a protective structure for a vehicle battery of a vehicle including a battery case, a battery module housed in the battery case, and a service plug that temporarily shuts off the power of the battery module.
The floor panel is composed of a rear floor panel sandwiched between a back panel extending in the width direction of the vehicle at a rear end portion in the front and rear direction of the vehicle and a rear seat installed forward in the front and rear direction with respect to the back panel. ,
The recess 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 is fixed to the rear floor panel.
A spare tire is installed vertically above the battery pack housed in the recess,
An opening is formed at the top of the battery case and at the lateral side of the vehicle,
The opening of the service plug is made by inclining the service plug so that the upper end thereof is directed outward in the width direction of the vehicle and obliquely upward with respect to the vertical axis with respect to the lower end of the service plug. Free to
In a state where the vehicle is viewed from above in the vertical direction, the service plug passes through the center of the spare tire and a first imaginary line extending in the width direction of the vehicle and a rear end portion of the spare tire in the front-rear direction The protection structure for a battery pack of a vehicle, wherein the protection structure is located outward in the width direction of the vehicle than the outer peripheral portion of the spare tire with a second imaginary line extending in the width direction of the vehicle through . The battery case has a protrusion which protrudes vertically upward than the opening.
The spare tire has a recess into which the protrusion is inserted,
The protrusion has a proximal end located vertically above the upper end of the recess and is tapered from the proximal end toward the upper end vertically above the recess.
The protection structure of a battery pack for a vehicle according to claim 1 , wherein the spare tire is installed such that the recessed portion covers the projecting portion . The floor panel extends in the width direction of the vehicle on the rear side in the front-rear direction of the vehicle with respect to the service plug, thereby connecting the both widthwise end portions of the recess from the first bracket And a second bracket extending forward in the front-rear direction of the vehicle and connecting the first bracket and a front end in the front-rear direction of the vehicle of the recess.
Inserting the second bracket into the recess of the spare tire so as to straddle the vertical direction above the protrusion;
The protection structure of a battery pack for a vehicle according to claim 2, wherein the spare tire is fastened to the second bracket . The vehicle is provided inward in the width direction of the vehicle with respect to the rear wheels and a pair of rear wheels provided on both sides in the width direction of the vehicle, and the upper portion is outward in the width direction of the vehicle from the rear floor panel With a rear wheel house inner panel curved towards the
4. The vehicle according to claim 1 , wherein the service plug is installed at a position overlapping the rear wheel house inner panel in the width direction of the vehicle in a state where the vehicle is viewed from above in the vertical direction. Protective structure of a vehicle battery pack according to any one of the preceding claims. The rear floor panel has a horizontal wall formed at the same height position as the upper end of the concave portion, the concave portion, an inclined wall inclined obliquely downward from the horizontal wall, and the concave portion. A bottom wall extending horizontally from the lower end of the battery pack and carrying the battery pack;
A first virtual plane extending obliquely upward of the vehicle along the lower surface in the extending direction of the service plug; and a second virtual plane extending obliquely upward of the vehicle along the upper surface in the extending direction of the service plug When set, the service plug is in a space between the intersection where the inclined wall and the horizontal wall intersect and the spare tire, and the first virtual plane is closer than the intersection. While passing vertically upward, the second virtual plane is inclined so as to pass the outer side in the width direction of the vehicle than the outer peripheral portion of the vehicle in the width direction of the spare tire. The protection structure of a battery pack for a vehicle according to any one of claims 1 to 4 . The battery pack for a vehicle according to claim 5 , wherein the service plug is installed in an inclined manner such that a height position of an upper end portion of the service plug is located vertically below the horizontal wall. Protection structure.

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