JP2018090179A - Attachment structure for attaching battery and electric connection box directly coupled to battery to vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new attachment structure for attaching a battery and an electric connection box directly coupled to the battery to a vehicle which enables the battery and the electric connection box directly coupled to the battery to be attached to the vehicle with good space efficiency and can stably support the battery and the electric connection box regardless of the size of the electric connection box.SOLUTION: A battery 10 is fixedly placed on a battery mounting area 26 of a battery tray 18 and attached to a vehicle 14 through the battery tray 18. Meanwhile, an electric connection box placement area 28 is integrally provided with the battery tray 18. The electric connection box 12 is fixedly placed in the electric connection box placement area 28 of the battery tray 18 to be attached to the vehicle 14 through the battery tray 18.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a mounting structure for mounting a vehicle battery and an electric junction box directly connected to the vehicle battery to the vehicle.

  Conventionally, an electric junction box such as a relay box, a junction box, and a control unit for distributing a battery and a power source of the battery to various in-vehicle devices is disposed in the engine room of the vehicle. Is wired with a power cable that electrically connects the two.

  By the way, due to the demand for higher vehicle density due to the recent increase in in-vehicle products, in the engine room, the battery and the electrical connection box directly connected to the battery are arranged apart, and a long power cable is provided between them. It is not preferable in terms of space efficiency. Therefore, as described in Japanese Patent No. 3923127 (Patent Document 1), the electric connection box is directly placed on the surface of the battery and attached, so that the power supply cable is arranged long between the battery and the electric connection box. Structures that avoid searching are proposed.

  However, since the electrical junction box is directly mounted on and attached to the surface of the battery, it may be difficult to stably hold the electrical junction box by the battery when the electrical junction box is relatively large. . Furthermore, since the electrical junction box is directly attached to the surface of the battery, the surface of the battery is covered with the electrical junction box, which may adversely affect the maintainability of the battery.

Japanese Patent No. 3923127

  The present invention has been made in the background of the above-mentioned circumstances, and the problem to be solved is that the battery and the electric connection box directly connected to the battery can be attached to the vehicle in a space-efficient manner, and the electric connection box It is an object of the present invention to provide a structure for mounting a novel battery and an electric connection box directly connected to the battery to a vehicle, which can stably support both the battery and the electric connection box regardless of the size of the battery.

  According to a first aspect of the present invention, in the structure for mounting a battery and an electric junction box directly connected to the battery to the vehicle, the battery is placed and fixed on a battery mounting area of a battery tray, and the battery tray is interposed therebetween. While being attached to a vehicle, the battery tray is integrally provided with an electric junction box placement area, and the electric junction box is placed and fixed on the electric junction box placement area of the battery tray. And being attached to the vehicle via the battery tray.

  According to this aspect, in addition to the battery placement area in which the battery is placed and fixed with respect to the battery tray used when the battery is assembled on the vehicle side, the electric connection box in which the electric connection box is placed and fixed A placement area is provided integrally. Therefore, since the battery and the electric junction box can be arranged in the same tray, both can be attached to the vehicle in a space efficient manner.

  In addition, the mounting area of the electrical junction box is provided integrally with the battery tray that has been used conventionally to support the battery separately from the battery, so that the electrical junction box can be connected to the battery tray without using the battery. It can be supported and attached to the vehicle. Therefore, even when the electrical junction box is enlarged, both the battery and the electrical junction box can be stably supported.

  Further, since the electric junction box is not placed on the surface of the battery unlike the conventional structure, there is no possibility of adversely affecting the maintenance performance relating to the battery.

  According to a second aspect of the present invention, in the first aspect, the electrical junction box includes a box body that houses and holds an internal circuit, and a lower case that covers the lower opening of the box body. The lower case is integrally provided in the electric junction box mounting region of the battery tray.

  According to this aspect, since the lower case of the electric junction box is integrally provided in the electric junction box mounting region of the battery tray, the number of molds for molding the lower case of the battery tray and the electric junction box is reduced to one. can do. Furthermore, since the mechanism for fixing the electric junction box to the battery tray can be realized by using the mechanism for locking the lower case and the box body, the number of parts can be further reduced, the manufacturing process can be simplified, and the cost can be reduced.

  According to a third aspect of the present invention, in the battery tray according to the second aspect, a partition wall is provided between the battery mounting area and the electric junction box mounting area and between the lower case and the battery tray. It protrudes across.

  According to this aspect, since the partition wall projects between the battery mounting area of the battery tray and the electrical junction box mounting area with a gap between the battery case and the lower case, the heavy battery is caused by vibration or the like. Avoiding adverse effects by contacting the electrical junction box is avoided.

  According to a fourth aspect of the present invention, there is provided the guide according to the second or third aspect, wherein the lower case is provided with a guide portion used when the box body of the electrical junction box is assembled. It is.

  According to this aspect, even when the box body of the electrical junction box is assembled to the battery tray on which the large battery is first placed and fixed, the box body of the electrical junction box is connected to the battery using the guide portion. It can be easily assembled to the lower case of the tray.

  According to a fifth aspect of the present invention, in the battery according to any one of the first to fourth aspects, the battery and the electrical junction box are electrically connected using a power cable. is there.

  According to this aspect, the battery and the electrical junction box are electrically connected using the power cable, but since both are arranged close to each other on the same battery tray, the power cable is shortened, Cost reduction can be realized.

  According to a sixth aspect of the present invention, in the battery according to any one of the first to fourth aspects, the battery and the electrical junction box are electrically connected using a bus bar.

  According to this aspect, since the battery and the electrical junction box are directly connected using the bus bar, electric power can be supplied with a lower loss by the lower resistance member. Further, compared to the case where the cables are directly connected using a conventional cable, a crimp terminal or the like can be eliminated, so that cost reduction and space saving can be realized. And since it is directly connected using the bus bar instead of an electric wire, there is no possibility of short-circuiting in the middle of the electric wire, and a battery direct attachment fuse (BFT) can be made unnecessary.

  According to the present invention, in addition to the battery placement area where the battery is placed and fixed with respect to the battery tray used when assembling the battery on the vehicle side, the electrical connection box where the electric connection box is placed and fixed A placement area is provided integrally. Therefore, the battery and the electric junction box can be attached to the vehicle in a space efficient manner. Moreover, by providing the mounting area of the electrical junction box integrally on the battery tray, the electrical junction box can be supported by the battery tray and attached to the vehicle without using a battery. Therefore, even when the electrical junction box is enlarged, both the battery and the electrical junction box can be stably supported. Furthermore, since the electric junction box is not placed on the surface of the battery as in the prior art, there is no possibility of adversely affecting the maintenance performance relating to the battery.

The exploded perspective view which shows the attachment structure to the vehicle of the battery as one Embodiment of this invention and the electrical-connection box directly connected to this battery. The whole perspective view which shows the assembly | attachment state of this embodiment shown in FIG. 1 (however, except an upper case). The whole perspective view which shows the assembly | attachment state of this embodiment shown in FIG. The perspective view seen from the other direction of the battery tray shown in FIG. The whole perspective view which shows the assembly | attachment state of another aspect of this embodiment (however, except an upper case). The whole perspective view which shows the assembly | attachment state of another aspect of this embodiment.

  Embodiments of the present invention will be described below with reference to the drawings.

  First, in FIGS. 1 to 4, the battery 10 and the electrical connection box directly connected to the battery 10 using the structure for mounting the battery and the electrical connection box directly connected to the battery according to an embodiment of the present invention to the vehicle are illustrated. A structure for attaching 12 to a vehicle 14 is shown. More specifically, as shown in FIG. 1, a substantially block-shaped metal bracket 16 is attached to a predetermined position of the vehicle 14, and a battery tray 18 is fixed to the bracket 16. . The battery 10 and the electric junction box 12 are assembled and held on the battery tray 18 attached to the vehicle 14 in this way. In order to facilitate understanding, the vehicle 14 and the bracket 16 are shown in phantom lines in FIG. 1, while the vehicle 14 and the bracket 16 are not shown in FIGS. Moreover, in the following description, upper refers to the upper part in FIGS. 1 to 4, and lower refers to the lower part in FIGS. 1 to 4, and the front refers to the left and rear in FIGS. The right side in FIGS.

  As shown in FIGS. 1 and 4, the battery tray 18 is an upper portion in which a peripheral wall 24 protruding upward is formed on the outer peripheral edge portion of the surface 22 of the bottom wall 20 having a substantially rectangular plate shape. For example, a synthetic resin such as polypropylene (PP) or polyamide (PA) is integrally formed by injection molding or the like. Further, one side of the battery tray 18 in the longitudinal direction (left side in FIG. 1) is a battery mounting region 26 having a substantially horizontally long rectangular shape (see FIG. 4) in plan view where the battery 10 is placed and fixed. The other side of the battery tray 18 in the longitudinal direction (right side in FIG. 1) is an electric connection box mounting region 28 having a substantially vertically long rectangular shape (see FIG. 1) in plan view where the electric connection box 12 is mounted and fixed. Has been. As described above, the battery tray 18 is integrally provided with the battery mounting area 26 and the electrical junction box mounting area 28, and the battery 10 is placed and fixed on the battery mounting area 26 and the electrical junction box mounting area 28. The battery 10 and the electrical junction box 12 are attached to the vehicle 14 via the battery tray 18 and the bracket 16 in a state where the electrical junction box 12 is mounted and fixed to the vehicle.

  The battery mounting area 26 of the battery tray 18 is configured to be surrounded by a partition wall 30 provided between the peripheral wall 24 of the battery tray 18 and the electric junction box mounting area 28. The partition wall 30 protrudes upward over the entire width dimension of the battery tray 18 (see FIG. 4) and extends to the approximate height dimension of the battery 10 placed and fixed on the battery mounting area 26. And has a substantially rectangular flat plate shape (see FIG. 2). The partition wall 30 protrudes from a lower case 66 provided in an electrical connection box mounting area 28 (described later) with a gap 32 therebetween (see FIG. 4), and the front surface of the partition wall 30 (battery mounted). The four reinforcing ribs 34 project from the surface of the region 26 over the entire height at positions spaced apart in the circumferential direction. Further, the peripheral wall 24 that extends in a direction orthogonal to the partition wall 30 and that constitutes the battery mounting region 26 has an overall height dimension at a position where three and four reinforcing ribs 36 are spaced apart in the circumferential direction. It protrudes inward (battery mounting area 26 side) (see FIG. 4). In addition, a substantially block-shaped reinforcing protrusion that extends over substantially the entire length in the circumferential direction at the central portion in the height direction of the peripheral wall 24 is provided on the peripheral wall 24 that constitutes the battery mounting region 26 that is opposed to the partition wall 30. 38 protrudes inward (battery mounting area 26 side) (see FIG. 1). Further, the bottom wall 20 constituting the battery mounting region 26 is provided with reinforcing ribs 40 that extend in a substantially lattice shape over substantially the entire surface and protrude upward. By providing the reinforcing ribs 34, 36, 40 and the reinforcing protrusions 38 in the battery mounting area 26, the battery mounting area 26 of the battery tray 18 is deformed by the vibration of the heavy battery 10 when the vehicle travels. Can be advantageously prevented. In addition, since the partition wall 30 projects from the lower case 66 provided in the electrical junction box mounting area 28 described later with a gap 32 therebetween, the battery 10 is electrically connected by vibrations or the like during vehicle travel. Adversely affecting the box 12 can be advantageously avoided. On the front end side (left side in FIGS. 1 and 4) of the battery mounting area 26 of the battery tray 18, a plane in which the two bolt fastening portions 42 open upward at a position separated in the width direction. A recess 44 having a substantially circular shape in view and a bolt insertion hole 46 having a substantially circular shape in a plan view penetrating through the bottom surface of the recess 44 are configured. The battery tray 18 is fastened and fixed to the bracket 16 by inserting a bolt (not shown) into the bolt insertion hole 46 and fastening the bolt to the bracket 16 (see FIG. 1).

  As shown in FIG. 1, the battery 10 mounted in the battery mounting area 26 of the battery tray 18 has a substantially rectangular block shape, and a longitudinal direction (left and right in FIG. The ground terminal 48 protrudes on the front end side (left side in FIG. 1), and the power supply terminal 50 protrudes on the rear end side (right side in FIG. 1). One end of a bus bar 52 is connected to the power terminal 50, while a stud bolt 54 is connected to the other end of the bus bar 52 in an upright state. The battery 10 in this embodiment is provided with a battery direct-attached fuse (BFT) 56. More specifically, as shown in FIG. 1, the battery direct-attached fuse 56 is provided with an alternator connection terminal portion 58 and a power input terminal portion 60 on the upper surface, and a power supply branch at the lower end portion. The terminal part 62 is provided. As shown in FIGS. 1 to 3, the power input terminal portion 60 is connected to the stud bolt 54, that is, the power terminal 50 through the bus bar 64 in a state where the battery direct attachment fuse 56 is attached to the battery 10. On the other hand, an electric wire from an alternator (not shown) is connected to the alternator connection terminal portion 58, and a power supply branching wire (not shown) is connected to the power supply branch terminal portion 62. The battery 10 with the battery direct-attached fuse 56 having such a configuration is mounted on the battery mounting area 26 of the battery tray 18 and is placed and fixed by a lock structure (not shown).

  On the other hand, as shown in FIG. 1, a lower case 66 is integrally provided in the electrical junction box placement region 28 of the battery tray 18. More specifically, the electrical connection box 12 is a box having a fusible link mounting part 70 for housing and holding a fusible link 68 constituting an internal circuit, a fuse mounting part 72 for storing and holding a fuse (not shown), and a power input terminal 76. It has a main body 74, an upper case 78 that covers the upper opening 77 of the box main body 74, and a lower case 66 that covers the lower opening 80, all of which include, for example, polypropylene (PP), polyamide (PA), and the like. The synthetic resin is integrally formed by injection molding or the like. The lower case 66 has a box shape having a substantially vertically long rectangular shape in plan view, and has a shape in which a peripheral wall 82 protrudes upward from the outer peripheral edge portion of the electric connection box mounting region 28 of the battery tray 18. Have. At the projecting end portions of the four corners of the peripheral wall 82, guide portions 84 projecting upward in a substantially bowl shape in plan view are provided, and are used when the box body 74 is assembled to the lower case 66. Thereby, even when the large battery 10 is first placed and fixed on the battery tray 18, the electric junction box placement of the battery tray 18 can be performed by using the guide body 84 for the box body 74 of the electric junction box 12. The lower case 66 formed in the region 28 can be easily assembled. Furthermore, two cylindrical lower halves 86 that open upward and in the longitudinal direction of the lower case 66 are formed at the protruding end portion of the peripheral wall 82 on the near side of the lower case 66. In addition, the peripheral wall 82 on the rear side (right side in FIG. 1) of the lower case 66 is provided with a power cable housing recess 88 that opens to the rear side and the upper side.

  As shown in FIG. 1, the box body 74 assembled to the lower case 66 using a lock mechanism (not shown) has a substantially rectangular block shape as a whole, and the peripheral wall facing the longitudinal direction of the box body 74. On the upper end of 90, a locked portion 92 is formed. On the other hand, two cylindrical upper halves are opened at the lower end of the peripheral wall 90 on the near side of the box body 74 and open in the longitudinal direction of the box body 74. A body 94 is formed. In addition, the peripheral wall 90 on the rear side (right side in FIG. 1) of the box body 74 is provided with a power cable housing recess 96 that opens in the rear side and the vertical direction. On the other hand, the upper case 78 has a box shape having a substantially vertically long rectangular shape in a plan view opening downward, and a lock portion 100 is formed on each peripheral wall 98 facing the longitudinal direction of the upper case 78. ing.

  Next, a procedure for directly connecting the battery 10 and the electrical junction box 12 configured as described above to the vehicle 14 using the battery tray 18 will be described. First, as shown in FIG. 1, the battery tray 18 is placed and fixed to a bracket 16 attached to a predetermined position of the vehicle 14. Such a fixing operation is executed by inserting a bolt (not shown) into the bolt insertion hole 46 of the battery tray 18 and fastening the bolt to the bracket 16. Subsequently, the battery direct attachment fuse 56 is attached to the battery 10, and then the battery 10 is placed and fixed on the battery mounting area 26 of the battery tray 18 fixed to the bracket 16 using a lock structure (not shown). Next, the box body 74 of the electrical junction box 12 is assembled to the lower case 66 formed in the electrical junction box placement area 28 of the battery tray 18 by using a guide portion 84 by using a lock structure (not shown). Thereby, the electric wire outlet which can take out the electric wire group which is not illustrated extending from the lower opening part 80 of the box main body 74 to the outside by the lower half body 86 of the lower case 66 and the upper half body 94 of the box main body 74. 102 is configured (see FIGS. 2 to 3). In this state, as shown in FIG. 2, the substantially L-shaped connection terminals 104 provided at both ends of the power cable 106 are connected to the power input terminal portions of the battery direct attachment fuse 56 attached to the battery 10. 60 and the power connection terminal 76 provided in the box body 74 of the electrical connection box 12, and then fastened and fixed using a nut (not shown), so that the battery 10 and the electrical connection box 12 can be connected using the power cable 106. It is designed to be electrically connected. Thereby, since the battery 10 and the electrical junction box 12 are disposed close to each other on the same battery tray 18, the power cable 106 can be shortened, and the cost can be reduced. Finally, as shown in FIG. 3, the upper opening 77 of the box body 74 of the electrical junction box 12 is covered with an upper case 78 so that the battery 10 according to the present embodiment is directly connected to the battery 10. A structure for attaching the electrical junction box 12 to the vehicle 14 is completed.

  According to the mounting structure of the battery according to the present embodiment and the electric connection box directly connected to the battery to the vehicle, the battery mounting on which the battery 10 is placed and fixed with respect to the battery tray 18 attached to the vehicle 14. In addition to the region 26, an electrical connection box placement region 28 on which the electrical connection box 12 is placed and fixed is integrally provided. As described above, since the battery 10 and the electrical junction box 12 can be disposed close to each other on the same battery tray 18, the battery 10 and the electrical junction box 12 can be disposed in the vehicle 14 in a space efficient manner.

  In addition, as compared with the conventional case where the electric junction box is directly attached to the battery, the electric junction box 12 is supported by the battery tray 18 and attached to the vehicle 14 by using an existing battery tray. I was able to. Therefore, even if the electrical junction box 12 is enlarged, both the battery 10 and the electrical junction box 12 can be supported by the battery tray 18 and stably attached to the vehicle 14. In addition, since the electric junction box is not placed on the surface of the battery as in the prior art, there is no possibility that the battery is hidden behind the electric junction box and the maintenance is deteriorated.

  In addition, since the lower case 66 of the electric junction box 12 is integrally provided in the electric junction box placement region 28 of the battery tray 18, one mold for molding the battery tray 18 and the lower case 66 is provided. Can be reduced. Further, since the mechanism for fixing the electrical junction box 12 to the vehicle 14 can be eliminated, the number of parts can be further reduced, the manufacturing process can be simplified, and the cost can be reduced.

  As mentioned above, although embodiment of this invention has been described, this invention is not limited at all by the specific description in this embodiment. For example, in the present embodiment, the battery 10 and the electrical connection box 12 are electrically connected using the power cable 106, but the battery 10 as in another aspect of the present embodiment illustrated in FIGS. The electrical connection box 12 may be electrically connected using the bus bar 108. That is, using the bus bar 108 provided with the connection terminals 110 at both ends, the power input terminal portion 60 of the battery direct-attached fuse 56 attached to the battery 10 and the power input provided on the box body 74 of the electrical connection box 12. The terminal 76 may be conductively connected. As a result, power can be supplied with lower loss using the bus bar 108 having a lower resistance. Further, compared to the case where the battery 10 and the electrical junction box 12 are directly connected using the power cable 106, a crimp terminal or the like can be eliminated, so that cost reduction and space saving can be realized. Further, since the bus bar 108 is used for direct connection instead of the power cable 106, there is no possibility of a short circuit in the middle of the power cable 106, so that the battery direct fuse 56 can be eliminated. ing.

10: Battery, 12: Electrical junction box, 14: Vehicle, 18: Battery tray, 26: Battery mounting area, 28: Electrical junction box mounting area, 30: Partition wall, 32: Gap, 66: Lower case, 68: Huge Bulllink (internal circuit), 74: box body, 76: power input terminal (internal circuit), 80: lower opening, 84: guide part, 106: power cable, 108: bus bar

Claims (6)

In a structure for mounting a battery and an electric connection box directly connected to the battery to a vehicle,
While the battery is mounted and fixed on the battery mounting area of the battery tray and attached to the vehicle via the battery tray,
The battery tray is integrally provided with an electric junction box mounting area,
The electric connection box is mounted on and fixed to the electric connection box mounting region of the battery tray, and is attached to the vehicle via the battery tray, and the battery and the electricity directly connected to the battery Mounting structure of junction box to vehicle.   The electrical junction box has a box body that accommodates and holds an internal circuit, and a lower case that covers a lower opening of the box body, and the lower case is provided in the electrical junction box mounting region of the battery tray. 2. A structure for mounting the battery according to claim 1 and an electric junction box directly connected to the battery to the vehicle.   3. The battery according to claim 2, wherein the battery tray has a partition wall projecting between the battery mounting area and the electrical junction box mounting area with a gap between the battery case and the lower case. Mounting structure of the electrical junction box to the vehicle.   The battery according to claim 2 or 3, wherein the lower case is provided with a guide portion used when the box body of the electric junction box is assembled. Installation of the electric junction box directly connected to the battery to the vehicle. Construction.   The battery and the electrical junction box according to any one of claims 1 to 4, wherein the battery and the electrical junction box are electrically connected using a power cable. Construction.   The structure for mounting the battery and the electrical junction box directly connected to the battery according to any one of claims 1 to 4, wherein the battery and the electrical junction box are electrically connected using a bus bar.

Images