JP2018170102A - On-vehicle battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect each part arranged in a housing case at the time of collision.SOLUTION: An on-vehicle battery comprises: a holding frame having a frame-like part and fixed to a vehicle body, the frame-like part being configured by a pair of first portions separated from each other in back and forth directions and a pair of second portions separated from each other in right and left directions; a housing case held by the holding frame in a state inserted in the frame-like part, and that has a front face wall part, a rear face wall part, right and left lateral face wall parts, and a bottom face part; a battery module stored in the housing case and in which a battery cell is arranged; a partition plate that divides an inner space of the housing case into an upper space and a lower space; and a reinforcement member that has a coupling part that is a coupling portion to the front face wall part and the right and left lateral face wall parts, and a projection part protruded from the coupling part and on whose upper surface the partition plate is placed. An upper end of the projection part is located above a lower end of the front-side first portion, and a lower end of the projection part is located below an upper end of the front-side first portion.SELECTED DRAWING: Figure 11

Description

  The present invention relates to a technical field of an in-vehicle battery having a storage case and a battery module stored in the storage case.

Japanese Patent No. 5206110

  Various types of vehicles such as automobiles are equipped with in-vehicle batteries for supplying electric power to motors and various electrical components.

  In recent years, in particular, vehicles such as electric vehicles, hybrid electric vehicles, and plug-in hybrid electric vehicles are becoming widespread, and in-vehicle batteries having a high power storage function are mounted on these electric powered vehicles.

  The in-vehicle battery is provided with a storage case and a battery module stored in the storage case, and the battery module is configured by arranging a plurality of battery cells (secondary batteries) such as a nickel metal hydride battery and a lithium ion battery, for example. Has been. In addition, in-vehicle batteries mounted on electric vehicles and the like have a plurality of battery modules arranged in a storage case in order to maintain a high power storage function, and the battery cells of these plurality of battery modules are connected in series or in parallel. Some have been done.

  Some of such in-vehicle batteries are disposed in a luggage compartment formed at the rear of the vehicle (see, for example, Patent Document 1).

  A vehicle-mounted battery described in Patent Literature 1 is partially inserted into a disposition recess formed by opening upward in a floor panel, and is positioned between rear side frames of a vehicle body that is provided to be separated from the left and right. .

  In a vehicle equipped with a vehicle-mounted battery described in Patent Document 1, the vehicle-mounted battery is disposed on the front side in the cargo compartment, and the space on the rear side of the storage case in the cargo compartment serves as a crushable area. Is formed. Therefore, when a load is applied from the rear due to a collision from the rear of the vehicle, the pair of rear side frames are crushed and the impact is absorbed, and the in-vehicle battery is protected.

  On the other hand, in a vehicle equipped with the vehicle-mounted battery described in Patent Document 1, when the collision from the rear of the vehicle is a large collision, the rear side frame is crushed and a large load is applied from the rear. May be granted. When a load is applied to the in-vehicle battery, the inclined portion of the storage case is guided to the front surface portion that forms the arrangement recess, and the entire in-vehicle battery is tilted upward so as to avoid the cross member positioned on the front side of the arrangement recess. Move forward. Therefore, an in-vehicle battery does not collide with the cross member, and an excessive load on the battery module stored in the storage case is suppressed.

  By the way, in the vehicle in which the vehicle-mounted battery as described above is disposed in the luggage compartment, a functional component having a predetermined function may be disposed in the crushable area. Functional parts include, for example, a fan motor that performs intake and exhaust for cooling each part arranged inside the storage case, a puncture repair kit for repairing when the tire is punctured, and a vehicle for lifting the vehicle There are jacks. These fan motors and the like are highly rigid parts.

  When a major collision occurs with a vehicle in which such functional parts are arranged in the crushable area, the functional parts arranged in the crushable area are moved forward with the collision. There is a possibility that the storage case is destroyed by the functional parts and the battery module or the like disposed inside the storage case is damaged or destroyed.

  In addition to a collision from the rear of the vehicle, for example, when a so-called pole collision occurs in which the rear part of the vehicle on which the vehicle-mounted battery is mounted collides with a power pole or the like due to a spin or the like, a pair of rear side frames in the vehicle body The part may collide with a utility pole. Even in such a case, since the functional parts arranged in the crushable area are moved forward in accordance with the collision, there is a risk that damage or destruction of the battery module arranged inside the storage case may occur. is there.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to overcome the above-described problems and to protect each part arranged inside a storage case at the time of a collision.

An in-vehicle battery according to the present invention has a frame-like portion formed by at least a part of a pair of first parts separated in the front-rear direction and at least a part of a pair of second parts separated in the left-right direction. A holding frame fixed to the vehicle body, a storage case having a front wall part, a rear wall part, left and right side wall parts, and a bottom part held by the holding frame in a state of being inserted into the frame-like part, A battery module housed in a storage case and having battery cells disposed therein, a partition plate that divides the internal space of the storage case into an upper space and a lower space, and a connecting portion to the front wall portion and the left and right side wall portions And a reinforcing member that protrudes from the connecting portion and protrudes from the connecting portion and on which the partition plate is placed, the upper end of the protruding portion being the lower end of the first portion on the front side Located above and front In which the lower end of the projecting portion is positioned below the upper end of the first portion of the front side.
Thereby, at least a part of the holding frame is positioned in front of the reinforcing member.

The vehicle-mounted battery described above straddles the first front reinforcing portion attached to straddle the front wall portion and the bottom surface portion, the left and right side wall portions, and the front wall portion inside the storage case. And a pair of second front reinforcing portions that are spaced apart from each other on the left and right sides, and may include a front corner reinforcing frame coupled to the reinforcing member.
Thereby, the impact transmitted to the front wall portion is easily transmitted to the reinforcing member via the front corner reinforcing frame.

In the above-described vehicle-mounted battery, the battery module is provided on the upper surface of the bottom surface portion, and the battery module is attached to supplement the strength of the bottom surface portion in the front-rear direction, and the fixed frame and the front corner reinforcing frame are combined. May be.
Thereby, the impact applied to the bottom surface portion is easily transmitted to the front wall portion and the reinforcing member via the front corner reinforcing frame.

The above-described vehicle-mounted battery may include a fixed frame that is disposed on the upper surface of the bottom surface portion and to which the battery module is attached and supplements the strength of the bottom surface portion in the front-rear direction.
Thereby, the impact applied to the bottom surface is absorbed by the fixed frame.

The above-described vehicle-mounted battery includes a plurality of the fixed frames, and the front corner reinforcing frame has a third front reinforcing portion that protrudes from the first front reinforcing portion and is attached to the front wall portion, The third front reinforcing portion may be located between the fixed frames in the left-right direction.
By providing the fixed frame apart from the left and right, a space in which a large battery can be stably arranged is secured. Moreover, since the 3rd reinforcement part is located among the some fixed frames provided in the space | interval, the part while the fixed frame is not arrange | positioned is reinforced.

The above-described vehicle-mounted battery may include a rear corner reinforcing frame attached so as to straddle at least the rear wall portion and the bottom surface portion inside the storage case.
Thereby, the impact applied to the rear wall portion is easily transmitted to the bottom surface portion.

The rear corner reinforcing frame of the above-described vehicle-mounted battery has a first rear reinforcing portion attached so as to straddle the rear wall portion and the bottom portion, and the left and right side wall portions and the rear wall portion. A pair of second rear reinforcing portions attached and spaced apart from each other on the left and right, wherein the second rear reinforcing portions may be coupled to the reinforcing member.
Thereby, the impact applied to the rear wall portion is easily transmitted to the bottom surface portion and the left and right side wall portions.

  According to the present invention, when an impact is applied from the rear of the vehicle and the storage case is moved forward, the impact is easily transmitted from the reinforcing member of the storage case to the holding frame, and deformation of the front wall portion of the storage case is suppressed. By doing so, each part arrange | positioned inside a storage case can be aimed at.

It is a schematic side view which shows the mounting state of the vehicle-mounted battery which concerns on embodiment. It is a perspective view which shows the mounting state etc. of the vehicle-mounted battery. It is a disassembled perspective view which shows the storage case and the member for reinforcement. It is a disassembled perspective view which shows the member etc. which are accommodated in the lower storage part of a storage case. It is sectional drawing which shows the state which attached the member for reinforcement to the storage case. It is sectional drawing which shows the arrangement | positioning state etc. of each part with respect to a storage case. It is a perspective view which shows the arrangement | positioning state of each part with respect to the lower stage of a storage case. It is a perspective view which shows the arrangement | positioning state of each part with respect to the upper stage of a storage case. It is a top view which shows the arrangement | positioning state etc. of each part with respect to a storage case. It is a figure for demonstrating the positional relationship of the reinforcement member of a storage case, and a cross member. It is a figure for demonstrating the positional relationship of the reinforcement member of a storage case, and a 1st part.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this vehicle-mounted battery of this invention is demonstrated with reference to an accompanying drawing.

  The in-vehicle battery 1 includes a holding frame 2, a storage case 3, a cover body 4, and battery modules 5 and 5 (see FIGS. 1 to 4).

  The in-vehicle battery 1 is disposed at least on a floor panel 300 in a luggage compartment 200 located behind the rear seat 100 (see FIG. 1). The floor panel 300 is formed with an arrangement recess 301 that opens upward in the luggage compartment 200. A fuel tank 400, rear suspensions 500 and 500, and a muffler 600 are located below the floor panel 300. The fuel tank 400 is located below the rear seat 100.

  The holding frame 2 extends in the left-right direction and is formed by connecting first portions 6, 6 that are spaced apart in the front-rear direction and second portions 7, 7 that extend in the front-and-rear direction and are spaced apart in the left-right direction. (See FIGS. 2 and 4). The left and right end portions 6a, 6a,... Are protruded laterally (outward) from the second portions 7, 7, respectively. The holding frame 2 is provided as a rectangular frame-like portion 8 except for the left and right end portions 6a, 6a,.

  A flat partition plate 9 for dividing the internal space into an upper space and a lower space is arranged inside the storage case 3. A notch 9 a is formed on one side of the front end of the partition plate 9. In the storage case 3, the upper part of the partition plate 9 is provided as the upper storage part 10, and the lower part of the partition plate 9 is provided as the lower storage part 11. In the lower storage part 11, for example, two battery modules 5 and 5 are stored separately in the left and right directions. The two battery modules 5 and 5 are arranged close to the front side of the storage case 3.

  The storage case 3 has a bottom surface portion 12 facing in the up-down direction and a peripheral surface portion 13 whose lower edge is continuous with the outer peripheral edge of the bottom surface portion 12. The peripheral surface portion 13 has a front wall portion 13a, a rear wall portion 13b, two side wall portions 13c and 13c, and a mounted portion 13d. The attached portion 13d is formed in a flange shape projecting outward from the upper edge of the front wall portion 13a, the rear wall portion 13b, and the side wall portions 13c and 13c.

  The storage case 3 is inserted into the frame-shaped portion 8 of the holding frame 2 from above, the lower surface of the mounted portion 13d is in contact with the upper surface of the frame-shaped portion 8, and the mounted portion 13d is fastened to the frame-shaped portion 8 with bolts or the like. It is fixed to the frame 2 (see FIG. 2).

  A communication hole 4 a is formed on one side of the front end portion of the cover body 4.

  The in-vehicle battery 1 is arranged in the luggage compartment 200 in a state where the lower stage including the lower storage portion 11 is inserted into the arrangement recess 301 of the floor panel 300 (see FIGS. 1 and 2). Therefore, the upper stage including the upper storage portion 10 is located above the upper surface of the floor panel 300.

  In the vehicle-mounted battery 1, both end portions 6a, 6a,... Of the first portions 6 and 6 of the holding frame 2 are fixed to the floor panel 300 with bolts or the like.

  The rear side frames 700 and 700 extending in the front-rear direction, which is the skeleton of the vehicle body, are positioned directly below the lower stage of the storage case 3, and the rear ends of the rear side frames 700 and 700 are positioned behind the in-vehicle battery 1. Bumper beams 800 extending in the left and right directions are disposed behind the rear side frames 700 and 700.

  A space on the rear side of the storage case 3 in the luggage compartment 200 is formed as a crushable area 900.

  As described above, when the holding frame 2 is fixed to the floor panel 300, the lower storage portion 11 of the storage case 3 is disposed in the disposition recess 301, and the lower storage portion 11 is separated from the left and right. It is located between the frames 700, 700 (see FIGS. 1 and 2).

A plurality of members for improving the rigidity are attached to the storage case 3. This will be specifically described with reference to FIG.
Fixed frames 14, 14, 14 are attached to the upper surface of the bottom surface portion 12 of the storage case 3 so as to be spaced apart from each other (see FIGS. 3 and 4). The fixed frame 14 has a flat plate-like arrangement surface portion 15 that faces in the up-down direction, a U-shaped projection portion 16 that protrudes upward from the arrangement surface portion 15 and opens downward in cross section, and the arrangement surface portion 15 and the projection portion 16. A flat plate-like rear connecting portion 17 that is continuous with the rear end and faces in the front-rear direction is integrally formed. One or two protruding portions 16 are provided separately from each other on the left and right sides, and a portion of the upper surface portion of the protruding portion 16 excluding the front end portion is provided as a base portion 16a. A front end portion of the upper surface portion of the protruding portion 16 is provided as a front connecting portion 18. The fixed frame 14 is attached to the bottom surface portion 12 with the protruding portion 16 extending in the front-rear direction.

Deflection prevention members 19 and 19 formed in a substantially U-shape opening upward are attached to the outer surface of the storage case 3 so as to be separated from each other in the left-right direction. The deflection preventing member 19 includes a first support portion 20 extending in the front-rear direction, a pair of second support portions 21, 21 extending substantially upward from the front end and the rear end of the first support portion 20, and a second Flanged attachment portions 22 and 22 that protrude forward or rearward from the upper ends of the support portions 21 and 21 are provided.
The deflection preventing member 19 has a hat shape in cross section perpendicular to the longitudinal direction. The first support portion 20 of the deflection preventing member 19 is projected substantially horizontally from a substantially U-shaped projecting portion 23 whose cross-sectional shape perpendicular to the longitudinal direction is opened upward, and an upper end of the projecting portion 23. And flange-shaped bottom surface mounting portions 24, 24 (see FIG. 5).
The second support portion 21 has a substantially U-shaped projecting portion 25 having a cross-sectional shape perpendicular to the longitudinal direction opened laterally, and a flange-like shape projecting laterally from both ends of the projecting portion 25. Side attachment portions 26 and 26 are provided (see FIGS. 3 and 4).

  In the bending preventing member 19, the bottom surface mounting portion 24 of the first support portion 20 is attached to the bottom surface portion 12, and the side surface mounting portions 26 and 26 of the second support portions 21 and 21 are the front wall portion 13a and the rear wall portion 13b. The flange-like attachment portions 22 and 22 are attached to the lower surface of the attached portion 13d of the storage case 3 to be fixed to the storage case 3.

  Since the deflection preventing members 19 and 19 are fixed to the storage case 3, the storage case 3 is prevented from being bent when the storage case 3 is inserted into the frame-like portion 8 and held by the holding frame 2. It is possible to ensure a stable arrangement state of each part arranged in the interior.

  In addition, the bending prevention member 19 may be comprised by two or more separate members. For example, one bend prevention member 19 may be composed of two members, a rear member attached to the rear wall portion 13 b and the bottom surface portion 12 and a front member attached to the front wall portion 13 b and the bottom wall portion 12. In this case, the rear member and the front member may be attached to each other without being connected to each other.

A front corner reinforcing frame 27 and a rear corner reinforcing frame 28 are attached to the inner surface of the storage case 3 in order to reinforce the corners.
The front corner reinforcing frame 27 includes a first front reinforcing portion 29 extending in the left-right direction, second front reinforcing portions 30, 30 extending obliquely upward from the left and right end portions of the first front reinforcing portion 29, and the first And 3rd front reinforcement part 31 and 31 extended from the intermediate part in the left-right direction of this front reinforcement part 29, and provided in the left-right direction (refer FIG.3 and FIG.4).

The first front reinforcing portion 29, the second front reinforcing portion 30, and the third front reinforcing portion 31 are protruded inward of the storage case 3 from the fixed surface portion 32 and the fixed surface portion 32 fixed to the storage case 3, respectively. And a protruding portion 33.
The first front reinforcing portion 29 and the second front reinforcing portion 30 have a W-shaped cross section perpendicular to the longitudinal direction. Both end portions of the W-shaped cross section are fixed surface portions 32, and a portion therebetween is a protruding portion 33.
The third front reinforcing portion 31 has a hat shape in cross section perpendicular to the longitudinal direction. Both end portions of the cross-sectional hat shape are fixed surface portions 32, and a portion therebetween is a protruding portion 33.

The front corner reinforcement frame 27 is attached to a position where the first front reinforcement portion 29 extends over the bottom surface portion 12 and the front wall portion 13a, and the second front reinforcement portions 30 and 30 are attached to the front wall portion 13a and the side wall portion 13c. The third front reinforcing portions 31 and 31 are attached to the front wall portion 13a by being attached to the storage case 3 so as to be attached to the storage case 3.
The 3rd front reinforcement parts 31 and 31 are located between the fixed frames 14 and 14 in the left-right direction, as shown in FIG.

Since the front corner reinforcing frame 27 is attached to the storage case 3, the rigidity of the front wall portion 13a, the side wall portions 13c, 13c, and the bottom surface portion 12 of the storage case 3 is improved. Further, since the rigidity of the corner portion of the storage case 3 is enhanced, the bottom surface portion 12, the front wall portion 13a, and the side wall portions 13c and 13c are easily maintained in a substantially orthogonal state.
Further, since the cross-sectional shape of the front corner reinforcing frame 27 is W-shaped or hat-shaped, the bottom surface portion 12, the front wall portion 13a, and the side wall portions 13c and 13c are substantially orthogonal to each other even when subjected to an impact. It is easy to be kept.

  The rear corner reinforcing frame 28 includes a first rear reinforcing portion 34 extending in the left-right direction, second rear reinforcing portions 35, 35 extending obliquely upward from both left and right end portions of the first rear reinforcing portion 34, and the first And a third rear reinforcing portion 36 extending substantially upward from the rear reinforcing portion 34 (see FIGS. 3 and 4).

The first rear reinforcing portion 34, the second rear reinforcing portion 35, and the third rear reinforcing portion 36 are protruded inward of the storage case 3 from the fixed surface portion 37 and the fixed surface portion 37 that are fixed to the storage case 3, respectively. And a protruding portion 38.
The third rear reinforcing portion 36 is provided with a fixed surface portion 37 and a protruding portion 38 as a reinforcing portion 39. Further, the third rear reinforcing portion 36 includes a mounting base portion 40 to which the partition plate 9 is attached as a surface portion extending substantially horizontally from the upper end of the reinforcing portion 39 and facing vertically.
The first rear reinforcing portion 34 and the second rear reinforcing portion 35 have a W-shaped cross section perpendicular to the longitudinal direction. Both end portions of the W-shaped cross section are fixed surface portions 37, and a portion therebetween is a protruding portion 38.
The third rear reinforcing portion 36 has a hat shape in cross section perpendicular to the longitudinal direction. Both end portions of the cross-sectional hat shape are fixed surface portions 37, and a portion therebetween is a protruding portion 38.

  The rear corner reinforcing frame 28 is attached to a position where the first rear reinforcing portion 34 extends over the bottom surface portion 12 and the rear wall portion 13b, and the second rear reinforcing portions 35 and 35 are attached to the rear wall portion 13b and the side wall portion 13c. The third rear reinforcing portion 36 is fixed to the storage case 3 by being attached to the rear wall portion 13b.

  By attaching the rear corner reinforcing frame 28 to the storage case 3, the rigidity of the rear wall portion 13 b, the side wall portions 13 c and 13 c, and the bottom surface portion 12 of the storage case 3 is improved. Further, since the rigidity of the corner portion of the storage case 3 is enhanced, the bottom surface portion 12, the rear wall portion 13b, and the side wall portions 13c, 13c are easily maintained in a substantially orthogonal state.

A reinforcing member 41 is attached to the peripheral surface portion 13 of the storage case 3 so as to extend over the inner surfaces of the front wall portion 13a and the side wall portions 13c and 13c.
The reinforcing member 41 has a hat-like cross-sectional shape perpendicular to the longitudinal direction, and is connected to a connecting portion 42 that is a surface portion attached to each portion of the peripheral surface portion 13, and protrudes inward of the storage case 3 from the connecting portion 42. A cross-sectional shape perpendicular to the longitudinal direction is provided with a protruding portion 43 having a U-shape opened toward the inner surface of the storage case 3. The upper end portions of the second front reinforcing portions 30 and 30 and the upper end portions of the third front reinforcing portions 31 and 31 of the front corner reinforcing frame 27 are coupled to the connecting portion 42 and the protruding portion 43 of the reinforcing member 41. .
The projecting portion 43 having a U-shaped cross-section has a placement surface portion 44 on which the partition plate 9 is placed facing up and down, and is projected downward from an inner end portion of the placement surface portion 44 and faces front and rear or left and right. An intermediate surface portion 45 and a lower surface portion 46 that protrudes from the lower end portion of the intermediate surface portion 45 toward the storage case 3 and faces upward and downward.

  The reinforcing member 41 has both a function of reinforcing the storage case 3 and a function of an attachment member for attaching the partition plate 9. Therefore, the in-vehicle battery 1 does not require a dedicated member for attaching the partition plate 9, and can simplify the structure by reducing the number of parts.

  By attaching the reinforcing member 41 to the peripheral surface portion 13 of the storage case 3, the strength of the storage case 3 is increased, and protection of each part disposed inside the storage case 3 can be strengthened.

As shown in FIG. 5, the placement surface portion 15 of the fixed frame 14 is attached to the upper surface of the bottom surface portion 12 of the storage case 3, and the bottom surface attachment portion 24 of the deflection preventing member 19 is attached to the lower surface of the bottom surface portion 12. The arrangement surface portion 15, the bottom surface mounting portion 24, and the bottom surface portion 12 are coupled in a state where a part thereof is overlapped.
Thereby, the rigidity of the bottom surface portion 12 of the storage case 3 is enhanced.

  Angular reinforcing members 47, 47, 47, 47 are attached to a portion extending from the lower surface of the four corners to the upper end of the peripheral surface portion 13 in the attached portion 13 d of the storage case 3. The corner reinforcing member 47 is attached to the first attachment surface portion 47a attached to the attachment portion 13d and the second attachment attached over two adjacent wall portions (for example, the front wall portion 13a and the side wall portion 13c) on the peripheral surface portion 13. And a surface portion 47b.

  By attaching the corner reinforcing member 47 across the adjacent two wall portions constituting the attached portion 13d and the peripheral surface portion 13, the rigidity of the storage case 3 can be increased, and the outer shape at the time of applying a load such as a collision can be increased. Can be easily maintained, and each part arranged inside can be protected. Moreover, since it attaches over the to-be-attached part 13d and the surrounding surface 13, the angle of the to-be-attached part 13d with respect to the surrounding surface 13 is maintained, and the favorable holding state with respect to the frame-shaped part 8 is ensured.

In the fixed frame 14, the front connecting portion 18 provided at the front end is connected to the first front reinforcing portion 29 of the front corner reinforcing frame 27, and the rear connecting portion 17 provided at the rear end is connected to the rear corner reinforcing frame 28. The first rear reinforcing portion 34 is connected.
The fixed frame 14 is attached to the bottom surface portion 12 from the front corner reinforcing frame 27 attached to the front end portion of the storage case 3 to the rear corner reinforcing frame 28 attached to the rear end portion of the storage case 3. Thus, when the storage case 3 receives an impact from the rear, the amount of deformation of the bottom surface portion 12 is suppressed, and damage to each component arranged inside the storage case 3 can be suppressed.
The front corner reinforcing frame 27, the fixed frame 14, and the rear corner reinforcing frame 28 are connected to each other so that the front wall portion 13a, the bottom surface portion 12, and the rear wall portion 13b of the storage case 3 are easily maintained in a substantially orthogonal state. The deformation and damage of the storage case 3 are suppressed.

In the front corner reinforcing frame 27, the upper ends of the second front reinforcing portions 30 and 30 are connected to the connecting portion 42 and the protruding portion 43 of the reinforcing member 41.
Thereby, the rigidity of the front wall part 13a in the peripheral surface part 13 of the storage case 3 is enhanced, and deformation and breakage of the front wall part 13a can be suppressed. Further, since the third front reinforcing portions 31 and 31 of the front corner reinforcing frame 27 are connected to the connecting portion 42 and the protruding portion 43 of the reinforcing member 41, the strength of the front wall portion 13a is further improved. Yes. Therefore, since the front side portion of the internal space 48 of the storage case 3 is particularly secured even during a collision, the possibility of preventing damage and destruction of the battery module 5 arranged close to the front side is increased. be able to.

  The internal space 48 of the storage case 3 is a space for storing each part described later in addition to the battery modules 5 and 5.

  The battery module 5 includes a box-shaped cell cover 49 whose longitudinal direction is the longitudinal direction, and a plurality of battery cells 50, 50,... 4). The battery modules 5 and 5 are stored in the lower storage portion 11 of the storage case 3 so as to be spaced apart from each other (see FIGS. 6 and 7).

  The battery module 5 is arranged in a state of straddling the base portions 16a and 16a of the projecting portions 16 and 16 of two adjacent fixed frames 14. In addition, the 3rd front reinforcement parts 31 and 31 of the front corner reinforcement frame 27 are located between the fixed frames 14 and 14 in the left-right direction as mentioned above. Therefore, the battery module 5 and the third front reinforcing portion 31 of the front corner reinforcing frame 27 are disposed at substantially the same position in the left-right direction.

As described above, the battery module 5 is arranged in a state of straddling the base portions 16a and 16a, so that the space between the base portions 16a and 16a is provided below the battery module 5 in a state in which the battery module 5 is arranged on the fixed frame 14. The heat dissipation in the battery module 5 can be improved after stabilizing the arrangement state of the battery module 5.
And since the 3rd front reinforcement part 31 of the battery module 5 and the front corner reinforcement frame 27 is made into the substantially the same position in the left-right direction, the part ahead of the battery module 5 among the front wall parts 13a cannot change easily. Therefore, damage to the battery module 5 due to the influence of the front wall portion 13a is less likely to occur.

  Further, since the fixed frames 14 and 14 are attached to the bottom surface portion 12 of the storage case 3 and the battery modules 5 and 5 are disposed on the fixed frames 14 and 14, the fixed frames 14 and 14 reinforce the bottom surface portion 12. In addition to the function, it functions as an arrangement part for arranging the battery modules 5 and 5, and can stabilize the arrangement state of the battery modules 5 and 5 without increasing the number of parts.

  A battery control unit 51 and a junction box 52 are stored in the lower storage portion 11 of the storage case 3 on the opposite side in the left-right direction across the battery modules 5 and 5. Accordingly, the battery modules 5 and 5, the battery control unit 51, and the junction box 52 are stored in the lower stage in the internal space 48 of the storage case 3 and are positioned below the upper surfaces of the rear side frames 700 and 700 (see FIG. 6). The battery control unit 51 has a function for controlling the entire vehicle battery 1. The junction box 52 has a relay, a fuse, a connector terminal, and the like.

  As described above, the lower storage portion 11 of the storage case 3 is located between the rear side frames 700 and 700, and the battery modules 5 and 5, the battery control unit 51, and the junction box stored in the lower storage portion 11. 52 is also located between the rear side frames 700, 700.

  In the upper storage portion 10 of the storage case 3, a terminal block 53 and an electric oil pump pump inverter 54 are arranged side by side in the front half, and a DC / DC converter 55 and a battery control unit 51 are used in the rear half. Inverters 56 are arranged side by side (see FIGS. 6 and 8). Accordingly, the terminal block 53, the pump inverter 54, the DC / DC converter 55, and the unit inverter 56 are stored in the upper stage in the internal space 48 of the storage case 3.

  In the storage case 3, a service plug 57 is disposed on the front side of the junction box 52. The service plug 57 is located in the notch 9 a of the partition plate 9. The service plug 57 is disposed at a position facing the communication hole 4 a of the cover body 4 in a state where the cover body 4 is attached to the storage case 3.

  As described above, the battery modules 5 and 5, the battery control unit 51, the junction box 52, the terminal block 53, the pump inverter 54, the DC / DC converter 55, and the unit inverter 56 are arranged inside the storage case 3. All the electrical components required for driving the vehicle-mounted battery 1 are arranged inside the storage case 3 in a state of being covered by the cover body 4.

  Therefore, electromagnetic noise from the outside can be shielded against the electrical components required for driving the in-vehicle battery 1, and a good driving state of the in-vehicle battery 1 can be ensured by strengthening the electromagnetic shield.

  Further, each part of the battery modules 5, 5, etc. is arranged in the internal space 48 of the storage case 3, but in the internal space 48, there are gaps behind the battery modules 5, 5, the battery control unit 51, and the junction box 52. The gap is formed as a rear space 48a (see FIG. 9).

  The in-vehicle battery 1 is provided with an intake duct 58 (see FIG. 2). The intake duct 58 passes through the storage case 3 and is located in a crushable area 900 formed on the rear side of the storage case 3 except for a part thereof. A heavy fan motor 59 is disposed inside the intake duct 58. The fan motor 59 is positioned at the same height as the lower storage portion 11 of the storage case 3 and is disposed between the rear side frames 700 and 700.

  A cooling fan (not shown) is connected to the rotation shaft of the fan motor 59. When the cooling fan is rotated, the cooling air is taken in from the intake duct 58 and sent to each part arranged inside the storage case 3, and the fan motor 59 has a function of rotating the cooling fan. Yes.

  The fan motor 59 is located, for example, immediately behind the junction box 52 in the crushable area 900 (see FIG. 9). Accordingly, the fan motor 59 is located on the right side of the right end of the battery module 5 arranged on the right side. The fan motor 59 may be located on the left side of the left end of the battery module 5 disposed on the left side.

  The in-vehicle battery 1 is provided with an exhaust duct 60 (see FIG. 2). The exhaust duct 60 passes through the storage case 3 and is located on the side (left side) of the storage case 3 except for a part thereof. Cooling air that is taken in from the intake duct 58 by the exhaust duct 60 and cools each part disposed inside the storage case 3 is discharged to the outside of the storage case 3.

  The cooling air discharged from the intake duct 58 through the inside of the storage case 3 and exhausted by the exhaust duct 60 is forcibly performed by the cooling fan, and each part arranged in the storage case 3, particularly the battery. The modules 5 and 5, the battery control unit 51, the junction box 52, and the like are efficiently cooled.

As shown in FIGS. 1 and 10, a cross member 61 is fixed to the lower surface side of the floor panel 300 in front of the in-vehicle battery 1.
The cross member 61 has a substantially hat shape with a cross-sectional shape extending left and right and orthogonal to the longitudinal direction and opened upward.
The cross member 61 is an attachment portion to the floor panel 300 and is connected to the connecting surface portions 62 and 62 facing upward and downward, and the cross-sectional shape perpendicular to the longitudinal direction projecting downward from one end of each of the connecting surface portions 62 and 62 is U-shaped. The U-shaped portion 63 is provided.

  A connecting portion between the cross member 61 and the floor panel 300 is a highly rigid portion. An overlapping portion between the connecting surface portion 62 on the rear end side of the cross member 61 and the floor panel 300 is provided as a high-rigidity portion 64.

The positional relationship between the reinforcing member 41 and the high rigidity portion 64 is shown in FIG. Specifically, the upper end H1t and lower end H1u of the protrusion 43 of the reinforcing member 41 and the upper end H2t and lower end H2u of the high-rigidity portion 64 are indicated by black dots.
The upper end H1t of the protruding portion 43 is positioned above the lower end H2u of the high-rigidity portion 64. Further, the lower end H1u of the protruding portion 43 is positioned below the upper end H2t of the high-rigidity portion 64.

That is, the high-rigidity portion 64 has a portion at least a part of which is the same height as the protruding portion 43. For example, in the state shown in FIG. 10, all of the high-rigidity portion 64 is located between the upper end H1t and the lower end H1u of the protruding portion 43.
In the peripheral surface portion 13 of the storage case 3, the portion to which the reinforcing member 41 is attached has higher rigidity than the other portions. Therefore, even if the impact from the rear of the vehicle is large and the storage case 3 moves forward and collides with the high-rigidity portion 64, the high-rigidity portion 64 that is a portion having high rigidity is used. Therefore, excessive movement of the in-vehicle battery 1 to the front is restricted. Moreover, the deformation | transformation and damage of the storage case 3 are made small by restricting the excessive movement to the front. That is, an arrangement space for the battery module 5 arranged inside the storage case 3 is easily secured.

In addition, as another example in which a part of the high-rigidity portion 64 has the same height as the protruding portion 43, for example, the reinforcing member 41 is attached at a lower position than the state illustrated in FIG. Only the connecting surface portion 62 may be a portion having the same height as the protruding portion 43.
Conversely, by attaching the reinforcing member 41 to a higher position than the state shown in FIG. 10, only the floor panel 300 of the high-rigidity portion 64 may be a portion having the same height as the protruding portion 43.
Further, only a part of the connecting surface portion 62 of the high-rigidity portion 64 may be a portion having the same height as the protruding portion 43, or only a part of the floor panel 300 of the high-rigidity portion 64 protrudes. The portion may be the same height as the portion 43.
However, since the entire high-rigidity portion 64 has the same height as the protruding portion 43, the above-described effects can be enjoyed to the maximum.

Of the first portions 6 and 6 of the holding frame 2, the vertical positional relationship between the first portion 6 on the front side and the reinforcing member 41 is shown in FIG. 11. Specifically, the upper end H1t and lower end H1u of the protrusion 43 of the reinforcing member 41 and the upper end H3t and lower end H3u of the first portion 6 on the front side are indicated by black dots.
The upper end H1t of the protrusion 43 is located above the lower end H3u of the first portion 6 on the front side. Further, the lower end H1u of the protruding portion 43 is located below the upper end H3t of the first portion 6 on the front side.

That is, the first portion 6 on the front side has a portion at least a part of which is the same height as the protruding portion 43. In the state shown in FIG. 11, a part of the first portion 6 on the front side is the same height as the protruding portion 43.
Thereby, when an impact is applied to the storage case 3 from the rear, the impact is easily transmitted from the part of the highly rigid peripheral surface portion 13 to which the reinforcing member 41 is attached to the holding frame 2.
Therefore, the deformation amount and breakage of the storage case 3 are suppressed, and the living space of the battery module 5 disposed inside the storage case 3 is easily secured.

  The same effect as described above can be obtained even when the entire first portion 6 on the front side is located between the upper end H1t and the lower end H1u of the protruding portion 43.

As described above, the in-vehicle battery 1 includes the at least part of the pair of first parts 6 and 6 separated in the front-rear direction and the at least part of the pair of second parts 7 and 7 separated in the left and right direction. A holding frame 2 having a frame-like portion 8 that is configured and fixed to the vehicle body, and a front wall portion 13a, a rear wall portion 13b, and left and right side walls that are held by the holding frame 2 while being inserted into the frame-like portion 8. Storage case 3 having portions 13c and 13c and bottom surface portion 12, battery module 5 stored in storage case 3 and having battery cell 50 disposed therein, and internal space 48 of storage case 3 as an upper space and a lower space The partition plate 9 to be divided, a connecting portion 42 that is a connecting portion to the front wall portion 13a and the left and right side wall portions 13c, 13c, and a protruding portion 43 that protrudes from the connecting portion and on which the partition plate is placed. A reinforcing member 41, The upper end of the output portion 43 is positioned below the upper end of the first portion 6 the lower end of the front side of the projecting portion 43 while positioned above the lower end of the first portion 6 of the front side.
Thereby, at least a part of the holding frame 2 is positioned in front of the reinforcing member 41.
Therefore, for example, when an impact due to a pole collision or the like is applied from the rear of the vehicle and the storage case 3 is moved forward, the impact is easily transmitted from the reinforcing member 41 of the storage case 3 to the holding frame 2. The deformation of the wall portion 13a is suppressed. Accordingly, it is possible to prevent the battery module 5 and the like disposed inside the storage case 3 from being damaged or damaged.
In particular, when the reinforcing member 41 is not attached to the rear wall portion 13b as shown in the above-described embodiment, the applied impact is efficiently reduced by deforming the rear wall portion 13b to fall forward. Since it can absorb well, it is possible to prevent the battery module 5 from being damaged. Since the holding frame 2 is positioned in front of the storage case 3, the front wall portion 13a of the storage case 3 is difficult to move forward, so that the rear wall portion 13b can be efficiently deformed to absorb the impact. It is possible.

As described with reference to FIG. 4 and the like, inside the storage case 3 of the in-vehicle battery 1, the first front reinforcing portion 29 that is attached so as to straddle the front wall portion 13a and the bottom surface portion 12, and the left and right side wall portions 13c. , 13 c and a pair of second front reinforcing portions 30, 30 that are attached so as to straddle the front wall portion 13 a and are spaced apart from each other on the left and right sides, and are connected to the reinforcing member 41. May be provided.
Thereby, the impact transmitted to the front wall portion 13 a is easily transmitted to the reinforcing member 41 through the front corner reinforcing frame 27.
Accordingly, since the rigidity of the front wall portion 13a is enhanced, even if the storage case 3 moves forward due to an impact from the rear and the front wall portion 13a comes into contact with each portion disposed in the front, the front wall portion 13a. The amount of deformation and breakage are suppressed. And damage etc. of the battery module 5 arrange | positioned inside are made hard to occur.

As described with reference to FIGS. 3 and 4, in the in-vehicle battery 1, the fixed frame 14 is arranged on the upper surface of the bottom surface portion 12 of the storage case 3 and the battery module 5 is attached to supplement the strength of the bottom surface portion 12 in the front-rear direction. The fixed frame 14 and the front corner reinforcing frame 27 may be coupled.
Thereby, the impact applied to the bottom surface portion 12 is easily transmitted to the front wall portion 13 a and the reinforcing member 41 through the front corner reinforcing frame 27.
Further, the strength of the bottom surface portion 12 and the front wall portion 13a of the storage case 3 can be improved. Accordingly, it is possible to reduce the risk that the battery module 5 disposed inside the storage case 3 will strongly collide with the front wall 13a of the storage case 3 or jump out of the storage case 3 due to an impact from the rear. .

As described with reference to FIGS. 3 and 4, the in-vehicle battery 1 may be provided on the upper surface of the bottom surface portion 12, the battery module 5 may be attached, and the fixed battery 14 may be provided to supplement the strength of the bottom surface portion 12 in the front-rear direction. Good.
As a result, the impact applied to the bottom surface portion 12 is absorbed by the fixed frame 14.
That is, the rigidity of the bottom surface portion 12 of the storage case 3 is increased. Therefore, for example, even when an impact from the rear of the vehicle is applied to the storage case 3, the amount of deformation or breakage of the bottom surface portion 12 is suppressed, and damage to the battery module 5 can be suppressed.

As described with reference to FIG. 5 and the like, the in-vehicle battery 1 includes a plurality of fixed frames 14 and 14 separated from each other in the left and right directions, and the front corner reinforcing frame 27 protrudes from the first front reinforcing portion 29 and protrudes from the front wall portion. It has the 3rd front reinforcement part 31 attached to 13a, and the 3rd front reinforcement part 31 may be constituted so that it may be located between fixed frames in the horizontal direction.
By providing the fixed frame 14 apart from the left and right, a space in which a large battery can be stably arranged is secured. Moreover, since the 3rd reinforcement part 31 is located between the some fixed frames 14 and 14 provided spaced apart, the part in which the fixed frame 14 is not arrange | positioned is reinforced.
Therefore, breakage and deformation of the front wall portion 13a and the like of the storage case 3 are uniformly suppressed, and damage to each part disposed inside the storage case 3 can be prevented. Moreover, the uniform strength improvement of the front wall part 13a is achieved.
In particular, as shown in the embodiment, when the battery module 5 is placed so as to straddle the two fixed frames 14, 14, the center of the battery module 5 in the left-right direction and the third front The center of the reinforcement part 31 is made into the substantially same position. That is, since the strength of the portion of the front wall portion 13a located in front of the battery module 5 is enhanced, the possibility that the battery module 5 is damaged due to the deformation of the front wall portion 13a can be further reduced. .

As described with reference to FIGS. 3 and 4, the in-vehicle battery 1 may include the rear corner reinforcing frame 28 attached so as to straddle at least the rear wall portion 13 b and the bottom surface portion 12 inside the storage case 3. Good.
Thereby, the impact applied to the rear surface wall portion 13 b is easily transmitted to the bottom surface portion 12.
Accordingly, the rear wall 13b is hardly deformed by an impact from the rear. In particular, since the rear corner reinforcing frame 28 is attached below the rear wall portion 13b, the strength of the lower portion of the rear wall portion 13b is particularly improved. Therefore, it is difficult for the bottom surface portion 12 of the storage case 3 to be deformed by an impact from the rear, and the battery module 5 disposed thereon is not easily damaged.

As described with reference to FIGS. 3 and 4, the rear corner reinforcing frame 28 includes the first rear reinforcing portion 34 attached to straddle the rear wall portion 13 b and the bottom surface portion 12, and the left and right side wall portions 13 c and 13 c. And a pair of second rear reinforcing portions 35, 35 that are attached so as to straddle the rear wall portion 13 b and are spaced apart from each other on the left and right sides, and the second rear reinforcing portion 35 is coupled to the reinforcing member 41. It may be.
Thereby, the impact applied to the rear surface wall portion 13b is easily transmitted to the bottom surface portion 12 and the left and right side wall portions 13c and 13c.
Therefore, even if an impact from the rear is applied to the storage case 3, it is possible to increase the possibility that a living space of the battery module 5 disposed inside is secured.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle-mounted battery, 2 ... Holding frame, 3 ... Storage case, 5 ... Battery module, 6 ... 1st part, 7 ... 2nd part, 8 ... Frame-shaped part, 9 ... Partition plate, 12 ... Bottom part , 13a ... front wall portion, 13b ... rear wall portion, 13c ... side wall portion, 14 ... fixed frame, 27 ... front corner reinforcing frame, 28 ... rear corner reinforcing frame, 29 ... first front reinforcing portion, 30 ... first 2 front reinforcing parts, 31 ... third front reinforcing part, 34 ... first rear reinforcing part, 35 ... second rear reinforcing part, 41 ... reinforcing member, 42 ... connecting part, 43 ... projecting part, 48 ... Internal space, 50 ... battery cell

Claims (7)

A holding frame having a frame-like portion formed by at least a part of a pair of first parts spaced apart in the front-rear direction and at least a part of a pair of second parts spaced apart in the left-right direction; ,
A storage case having a front wall portion, a rear wall portion, left and right side wall portions, and a bottom portion held by the holding frame in a state of being inserted into the frame-shaped portion;
A battery module housed in the storage case and having battery cells disposed therein;
A partition plate that divides the internal space of the storage case into an upper space and a lower space;
A reinforcing member having a connecting portion that is a connecting portion to the front wall portion and the left and right side wall portions, and a protruding portion that protrudes from the connecting portion and on which the partition plate is placed,
An in-vehicle battery, wherein an upper end of the protruding portion is positioned above a lower end of the first portion on the front side and a lower end of the protruding portion is positioned lower than an upper end of the first portion on the front side. Inside the storage case, a first front reinforcing portion attached so as to straddle the front wall portion and the bottom surface portion, and attached to straddle the left and right side wall portions and the front wall portion and spaced apart from each other to the left and right. The in-vehicle battery according to claim 1, further comprising: a front corner reinforcing frame coupled to the reinforcing member. The battery module is mounted on the upper surface of the bottom surface portion and includes a fixed frame that supplements the strength in the front-rear direction of the bottom surface portion,
The in-vehicle battery according to claim 2, wherein the fixed frame and the front corner reinforcing frame are combined. The in-vehicle battery according to any one of claims 1 to 3, further comprising a fixed frame that is disposed on an upper surface of the bottom surface portion and to which the battery module is attached to supplement strength in the front-rear direction of the bottom surface portion. A plurality of the fixed frames are provided apart from each other on the left and right,
The front corner reinforcing frame has a third front reinforcing portion that protrudes from the first front reinforcing portion and is attached to the front wall portion,
The in-vehicle battery according to claim 3, wherein the third front reinforcing portion is located between the fixed frames in the left-right direction. The in-vehicle battery according to any one of claims 1 to 5, further comprising a rear corner reinforcing frame attached so as to straddle at least the rear wall portion and the bottom surface portion inside the storage case. The rear corner reinforcing frame is attached so as to straddle the rear wall portion and the bottom wall portion, and the left and right side wall portions and the rear wall portion. And a pair of second rear reinforcing parts positioned
The in-vehicle battery according to claim 6, wherein the second rear reinforcing portion is coupled to the reinforcing member.

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