JP2013001162A - Battery unit mounting structure for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery unit mounting structure for a vehicle in which a battery unit can be mounted using effectively a hollow space of a door beam arranged in a door.SOLUTION: The battery unit mounting structure for the vehicle is formed by arranging the door beam 5 in the longitudinal direction of the vehicle in the inner space of a door constituted by joining the peripheral edges of an outer panel and an inner panel, wherein the door beam 5 is configured with a hollow member and the battery unit 8 is stored in the door beam 5. The battery unit 8 is configured to be dividable in the longitudinal direction of the door beam 5. In addition, openings at both ends in the longitudinal direction of the door beam 5 are closed by detachable caps 9 and electric wirings 10 for feeding electric power from the battery unit 8 stored in the door beam 5 to the outside of the door beam 5 are passed through at least one of the caps 9. Moreover, the door beam 5 is disposed diagonally to descend to the rearward of the vehicle.

Description

  The present invention relates to a battery unit mounting structure for a vehicle in which a door beam is disposed in the interior space of the door in the vehicle front-rear direction.

  In a vehicle such as a hybrid vehicle or an electric vehicle that travels using an electric motor as a driving source, a battery unit for supplying electric power to the electric motor is mounted. The battery unit is under the floor of the vehicle, the back of the seat back, the seat It is installed below (see, for example, Patent Document 1).

  Patent Document 2 discloses a configuration in which a battery unit is arranged in an interior space of a door body constituted by an outer panel and an inner panel, specifically, a center line in the vertical direction (movement direction) of the door glass and the center line. The structure which fixes a battery unit with respect to an inner panel via a fixing member in the area | region between the glass center and inner panel which extended this is proposed.

Japanese Patent Laying-Open No. 2005-063776 JP 2008-284946 A

  However, in order to extend the cruising distance of the vehicle, it is necessary to further mount a battery unit, and it is not sufficient to arrange the battery unit at the location proposed in Patent Documents 1 and 2. For this reason, it is necessary to arrange a battery unit in another place of the vehicle.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to mount a battery unit of a vehicle that can effectively use a hollow space inside a door beam arranged inside a door. To provide a structure.

  To achieve the above object, the invention according to claim 1 is mounted on a battery unit of a vehicle in which a door beam is arranged in the vehicle front-rear direction in an interior space of a door configured by joining the peripheral edges of an outer panel and an inner panel. It is a structure, The said door beam was comprised with the hollow member, and the battery unit was stored in this door beam, It is characterized by the above-mentioned.

  A second aspect of the invention is characterized in that, in the first aspect of the invention, the battery unit is configured to be split in the longitudinal direction of the door beam.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the opening at both ends in the longitudinal direction of the door beam is closed by a detachable cap, and at least one of the caps is stored in the door beam. Electric wiring for extracting electric power from the battery unit to the outside of the door beam is passed.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, characterized in that the door beam is arranged obliquely so as to be lowered toward the rear of the vehicle.

  According to the first aspect of the present invention, since the door beam is formed of a hollow member and the battery unit is stored in the door beam, the battery unit can be mounted by effectively using the hollow space of the door beam. The cruising range of the vehicle can be extended. Further, by storing the battery unit in the door beam having high rigidity, the battery unit can be effectively protected. Furthermore, since the weight of the door increases due to the weight of the battery unit, the closing performance of the door is improved and the operation feeling is enhanced.

  According to the invention described in claim 2, since the battery unit is configured to be split in the longitudinal direction of the door beam, even if the door beam is deformed due to a side collision of the vehicle, the plurality of battery units are displaced following the deformation. As a result, damage to the battery unit is prevented.

  According to the invention described in claim 3, since the opening at both ends in the longitudinal direction of the door beam is closed by a detachable cap, the door beam can be changed from a conventional simple hollow structure to a sealed hollow structure capable of storing a battery unit, The battery unit can be easily replaced by removing the cap. Further, electric power can be taken out from the battery unit and supplied to an electric motor or the like by electric wiring extending from the battery unit stored in the door beam and passing through the cap.

  According to the fourth aspect of the invention, since the door beam is disposed obliquely so as to descend toward the rear of the vehicle, the backlash of the battery unit stored in the door beam is suppressed without using any special urging means.

It is a side view of the front door which shows the battery unit mounting structure of the vehicle concerning the present invention. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is a figure which shows the obstruction | occlusion structure by the cap of the C section (door beam edge part) of FIG. 3, Comprising: (a) is sectional drawing which shows the state before cap assembly | attachment, (b) is a cross section which shows the state after cap assembly | attachment. FIG. It is a figure which shows another form of the obstruction | occlusion structure by the cap of the C section (door beam edge part) of FIG. 3, Comprising: (a) is sectional drawing which shows the state before cap assembly | attachment, (b) is the state after cap assembly | attachment. FIG.

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

  1 is a side view of a front door showing a battery unit mounting structure of a vehicle according to the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, FIG. 3 is a sectional view taken along line BB in FIG. It is a figure which shows the obstruction | occlusion structure by the cap of the C section (door beam edge part) of FIG. 3, Comprising: (a) is sectional drawing which shows the state before cap assembly | attachment, (b) is a cross section which shows the state after cap assembly | attachment. FIG.

  In FIG. 1, reference numeral 1 denotes a front door that can be opened and closed provided on the left side of a front portion of a vehicle that travels using an electric motor such as a hybrid vehicle or an electric vehicle as a drive source. The front door 1 is shown in FIG. Further, each of the peripheral edges of the outer panel 2 and the inner panel 3 which are press-formed products of steel plates is joined by hemming to have a hollow shape. In this front door 1, a rectangular frame-shaped door sash 1B is formed on the upper portion of the lower half door body 1A, and a window portion surrounded by the door sash 1B is opened and closed by a door glass 4 that moves up and down. Is done. Although only the left front door 1 is shown in FIG. 1, the basic configuration of the left and right front doors 1 is the same, so only the left front door 1 will be described below.

  By the way, as shown in FIG. 2, the linear door beam 5 comprised by the round pipe which is a hollow member is arrange | positioned in the vehicle front-back direction in the internal space S of the door main body 1A of the front door 1. As shown in FIG. The door beam 5 is a reinforcing member for suppressing deformation of the side door 1 against a large external force from the side of the vehicle, and is disposed obliquely so as to descend toward the rear of the vehicle as shown in FIG. Both ends are attached to the inner surface of the inner panel 3 by brackets 6 and 7 made of sheet metal. Specifically, the front door 1 is attached to the vehicle body through a pair of upper and lower hinges provided on the front side thereof so as to be opened and closed, and a latch provided on the rear side is engaged with a striker attached to the vehicle body. Closed state. Here, the front end of the door beam 5 is positioned between a pair of upper and lower hinges provided on the front side of the front door 1 in the vertical direction of the vehicle, and the rear end of the door beam 5 is disposed below the latch.

  Thus, the present embodiment is characterized in that the battery unit 8 is stored using the space in the door beam 5 which is a hollow member. Here, as shown in FIG. 3, the battery unit 8 includes a cylindrical battery 8 a divided into a plurality (seven in the illustrated example) in the longitudinal direction of the door beam 5. The opening is closed by a removable cap 9 shown in FIG. 4 (only the rear end side is shown in FIG. 4).

  As shown in FIG. 4A, a female screw 5a is formed on the inner periphery of the rear end opening of the door beam 5, and a male screw 9a is formed on the outer periphery of the fitting portion 9A of the cap 9. ing. Accordingly, as shown in FIG. 4B, when the fitting portion 9A of the cap 9 is fitted into the rear end opening of the door beam 5 and the cap 9 is turned, the male portion formed on the fitting portion 9A of the cap 9 is formed. A screw 9 a is screwed into a female screw 5 a formed on the inner periphery of the rear end opening of the door beam 5, and the cap 9 is screwed to the rear end of the door beam 5 to close the rear end opening of the door beam 5. . As shown in FIG. 3, the front end opening of the door beam 5 is similarly closed by a cap 9.

  By the way, the fixing structure of the cap 9 to the door beam 5 is not limited to the screw type shown in FIG. 4, and for example, the engagement type shown in FIG. 5 can be adopted. That is, in this engagement method, as shown in FIG. 5A, a plurality of engagement holes 5b are formed around the opening end of the door beam 5, while the fitting portions 9A of the cap 9 are provided at a plurality of locations on the outer periphery. An engaging claw 9b is formed, and the engaging portion 9A of the cap 9 is fitted into the inner periphery of the open end of the door beam 5, and the cap 9 is pushed in as it is, as shown in FIG. Is engaged with the engagement hole 5b on the door boom 5 side. Then, the cap 9 is fixed to the opening end of the door beam 5, and the end opening of the door beam 5 is closed by the cap 9.

  Thus, for example, in a state where the rear end opening of the door beam 5 is closed by the cap 9, the cap 9 that closes the front end opening of the door beam 5 is removed, and a plurality of batteries 8 a are removed from the opened front end opening of the door beam 5. When the door beam 5 is sequentially inserted and finally the front end opening of the door beam 5 is closed by the cap 9, the battery unit 8 constituted by a plurality of batteries 8 a is stored in the door beam 5 as shown in FIG. 3. When the battery unit 8 is replaced, for example, by removing the cap 9 that closes the rear end opening of the door beam 5, the plurality of batteries 8 a accommodated in the door beam 5 are weighted along the inclination of the door beam 5. It is taken out of the door beam 5. Thereafter, the rear end opening of the door beam 5 is closed by the cap 9, while the cap 9 closing the front end opening of the door beam 5 is removed, and a new battery 8 a is inserted into the door beam 5 from the opened upper end opening of the door beam 5. Finally, if the upper end opening of the door beam 5 is closed by the cap 9, the battery 8a can be easily replaced.

  In the present embodiment, at least one of the caps 9, for example, the front cap 9 as shown in FIG. 1, has an electrical wiring for taking out power from the battery unit 8 stored in the door beam 5 to the outside of the door beam 5. 10 is passed through, and a connector 11 is connected to the end of the electrical wiring 10. At this time, the front cap 9 is positioned between a pair of upper and lower hinges provided on the front side of the front door 1 in the vertical direction of the vehicle, and is disposed in the vicinity of the grommet that guides the door harness to the vehicle body. Can be prevented from becoming unnecessarily long.

  As described above, in this embodiment, the door beam 5 is configured by a round pipe that is a hollow member, and the battery unit 8 is stored in the door beam 5, so that the battery unit 8 can be effectively used by utilizing the hollow space of the door beam 5. It can be mounted on a vehicle, and the cruising range of a vehicle such as an electric vehicle can be extended. Further, by storing the battery unit 8 in the door beam 5 having high rigidity, the battery unit 8 can be effectively protected. Furthermore, since the weight of the front door 1 increases due to the weight of the battery unit 8, the closing property of the front door 1 is improved and the operation feeling is enhanced.

  In this embodiment, since the battery unit 8 is divided into the longitudinal direction of the door beam 5 and configured as an assembly of a plurality of batteries 8a, even if the door beam 5 is deformed due to a side collision of the vehicle, the deformation follows. Thus, the plurality of batteries 8a are displaced, and the battery unit 8 is prevented from being damaged.

  Furthermore, in the present embodiment, since the opening portions at both ends in the longitudinal direction of the door beam 5 are closed by the removable caps 9, the door beam 5 can be changed from a conventional simple hollow structure to a sealed hollow structure capable of storing the battery unit 8. At the same time, the battery unit 8 can be easily replaced by removing the cap 9. The electric power of the battery unit 8 can be taken out of the door beam 5 and supplied to an electric motor (not shown) or the like by an electric wire 10 extending from the battery unit 8 stored in the door beam 5 and passing through the cap 9.

  Further, in the present embodiment, the door beam 5 is disposed obliquely so as to be lowered toward the rear of the vehicle, so that the backlash of each battery 8a of the battery unit 8 stored in the door beam 5 does not use any special urging means. The effect of being suppressed is obtained. Furthermore, the water applied to the door beam 5 easily flows downward, and the water resistance of the battery unit 8 can be improved.

  In the above description, the battery unit is stored in the door beam provided on the left and right front doors of the vehicle. However, the battery unit may be stored in the door beam provided on the left and right rear doors. In this way, the cruising range of the vehicle can be further extended.

DESCRIPTION OF SYMBOLS 1 Front door 2 Outer panel 3 Inner panel 4 Door glass 5 Door beam 6, 7 Bracket 8 Battery unit 8a Battery 9 Cap 10 Electrical wiring 11 Connector S Interior space of front door

Claims (4)

A vehicle battery unit mounting structure in which a door beam is arranged in the vehicle front-rear direction in the interior space of a door configured by joining the peripheral edges of the outer panel and the inner panel,
A battery unit mounting structure for a vehicle, wherein the door beam is formed of a hollow member, and a battery unit is stored in the door beam.   The battery unit mounting structure for a vehicle according to claim 1, wherein the battery unit is configured to be split in a longitudinal direction of the door beam.   The opening at both ends in the longitudinal direction of the door beam is closed by a detachable cap, and an electric wiring for taking out electric power from the battery unit stored in the door beam to the outside of the door beam is passed through at least one of the caps. The vehicle battery unit mounting structure for a vehicle according to claim 1 or 2. The battery unit mounting structure for a vehicle according to any one of claims 1 to 3, wherein the door beam is disposed obliquely so as to descend toward the rear of the vehicle.

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