JP2014097727A - Wiring structure of high voltage cable for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiring structure of a high voltage cable for a vehicle which can shorten the length of the high voltage cable and allows effective use of a space in a storage chamber.SOLUTION: A wiring structure of a high voltage cable for a vehicle includes: a cabin 7; an inverter 2 which is located in front of the cabin 7 in the vehicle front-back direction; a motor 3; an engine room 1 which accommodates a generator 4 and the like; a dash panel 5 which separates the cabin 7 and the engine room 1; and high voltage cables 6 which are connected to connected parts 2A arranged at positions facing the dash panel 5 of the inverter 2. Connecting parts 61, connected to the connected parts 2A, of the high voltage cables 6 have an L-shaped terminal comprising a vertical part and a horizontal part. The high voltage cables 6 are wired downward from the connected parts 2A between the inverter 2 and the dash panel 5.

Description

  The present invention relates to a wiring structure for a high-voltage cable for vehicles (hereinafter referred to as a high-voltage cable), and more specifically, a vehicle that can shorten the length of the high-voltage cable and can effectively use the space in the engine room. The present invention relates to a high voltage cable wiring structure.

  Conventionally, a hybrid vehicle (HEV) and an electric vehicle (EV) include high voltage units such as an inverter 101, a motor 102, and a generator 103 in an engine room 100 as shown in FIG. These high voltage units are connected by a high voltage cable 104. In this routing structure, the high voltage cable 104 is routed so as to extend in the direction of the dash panel 105. As another wiring structure of the high voltage cable, a structure in which an electric device arranged in the vehicle width direction in the engine room and other components are connected by a high voltage cable is known (for example, see Patent Document 1). . In this wiring structure, the high-voltage cable includes a plurality of phases of electric wires arranged in parallel in the vehicle width direction and bundled so that the plurality of phases of electric wires are arranged on the same plane.

JP 2007-307984 A

  However, in the hybrid vehicle and the electric vehicle, the inverter 101, the motor 102, and the generator 103 are arranged in accordance with their functions and characteristics, so that they are arranged in the engine vertical direction rather than the vehicle width direction in the engine room 100. Are often arranged. In many cases, the connected portion is arranged at the rear portion of the inverter 101 in view of the structure of the high voltage component and the layout of the vehicle. The high voltage cable 104 connected to such a high voltage component is thick and difficult to bend. For this reason, as shown in FIG. 7, when the high voltage cable 104 is bent, the rounded portion that becomes the bending curve becomes large (the radius of curvature becomes long), and a long line length is required. Therefore, when connecting the high voltage cable 104 to the connected portion arranged at the rear of the high voltage component, a space for bending the high voltage cable 104 behind the inverter 101 (in front of the dash panel 105) is required. Become. In the wiring structure of the high voltage cable 104 as shown in FIG. 7, when an external force is applied from the front of the vehicle, the high voltage unit (inverter 102 or the like) is retracted, and the high voltage cable 104 is connected to the high voltage unit and the dash. There is a risk of being pinched by the panel 105.

  The present invention has been made in view of the above problems, and the present invention provides a high-voltage cable wiring structure for a vehicle that can shorten the length of the high-voltage cable and can effectively use the space in the storage room. The purpose is to provide.

  In order to solve the above-described problems and achieve the object, an aspect of the present invention includes a vehicle passenger compartment, a storage compartment that is located in front of the passenger compartment in the vehicle front-rear direction, and stores a high-voltage unit; A high-voltage cable routing structure comprising: a dash panel that divides a chamber; and a high-voltage cable that is connected to a connected portion that is disposed at a position facing the dash panel of the high-voltage unit. The connecting portion connected to the connected portion of the high-voltage cable is connected to the vertical portion where the ends of the electric wires constituting the high-voltage cable are connected, and the horizontal portion bent from the upper end of the vertical portion and connected to the connected portion of the high-voltage unit. And a high voltage cable is routed between the high voltage unit and the dash panel downward from the connected portion.

  ADVANTAGE OF THE INVENTION According to this invention, the length of a high voltage cable can be shortened, and the wiring structure of the high voltage cable of the vehicle which can utilize effectively the space in a storage room is realizable.

FIG. 1 is a perspective view showing a main part of a vehicle to which a high-voltage cable routing structure according to an embodiment of the present invention is applied. FIG. 2 is a plan view of an inverter to which the high-voltage cable routing structure according to the embodiment of the present invention is applied. FIG. 3 is a rear view of the inverter to which the high-voltage cable routing structure according to the embodiment of the present invention is applied. FIG. 4 is a perspective view showing a mounting structure of an L-shaped terminal provided at the connection portion of the high voltage cable according to the embodiment of the present invention. FIG. 5 is a perspective view showing the structure of the connecting portion of the high voltage cable according to the embodiment of the present invention. FIG. 6 is an explanatory side view showing a state in which the high voltage cable according to the embodiment of the present invention is attached to the rear portion of the inverter. FIG. 7 is an explanatory side view showing a conventional high-voltage cable routing structure.

  Below, the detail of the wiring structure of the high voltage cable which concerns on embodiment of this invention is demonstrated based on drawing. In this embodiment, for convenience of explanation, the front-rear direction, the left-right direction, and the up-down direction in the state of being mounted on a vehicle are indicated by arrows in the drawing.

(Schematic configuration of the installed vehicle)
As shown in FIG. 1, a vehicle to which the high-voltage cable routing structure according to the present embodiment is applied includes an engine room 1 as a storage room, an inverter 2 as a high-voltage unit, a motor 3, A generator 4 and the like are mounted. A dash panel 5 is disposed between the engine room 1 and the guest room 7. The inverter 2 is disposed in the upper part of the front side in the vehicle longitudinal direction in the engine room 1. The motor 3 is arranged behind the inverter 2 in the vehicle front-rear direction and below the right side in the vehicle left-right direction. The generator 4 is disposed in front of the motor 3 in the vehicle front-rear direction. The generator 4 is arranged on the rear side in the vehicle front-rear direction with respect to the inverter 2 and on the lower right side in the vehicle left-right direction.

  As shown in FIG. 1, a connected portion 2 </ b> A of the inverter 2 is provided on the upper part of the rear side surface of the inverter 2 in the vehicle front-rear direction. As shown in FIG. 6, a connected plate 2B is arranged inside the connected portion 2A so as to extend along the horizontal direction. In addition, the to-be-connected board 2B is arrange | positioned in the position where the same number corresponds to the L-shaped terminal 70 provided in the connection part 61 of the high voltage cable 6 mentioned later. As shown in FIG. 1, a cover 2 </ b> C that covers the upper portion of the connected portion 2 </ b> A is provided on the upper portion of the inverter 2. The motor 3 and the generator 4 include a connected portion (not shown) on the upper left side surface in the vehicle left-right direction.

(High voltage cable and wiring structure)
As shown in FIGS. 1 and 3, the high voltage cable 6 is connected to a covering portion (cable portion) 6 </ b> A covered with a tube-like covering made of an electrically insulating resin, and a connected portion 2 </ b> A of the inverter 2. A connecting portion 61 covered with an electrically insulating resin, the other connecting portion 62 covered with an electrically insulating resin, and three electric wires 63 (see FIG. 4) housed in the covering portion 6A. It is equipped with.

  As shown in FIG. 4, an L-shaped terminal 70 is attached to one end of each of the electric wires 63. The L-shaped terminal 70 includes a vertical portion 71 connected to one end portion of the electric wire 63, a horizontal portion 72 bent from the upper end of the vertical portion 71 so as to form a right angle with the vertical portion 71, and for connection. It is a metal fitting. The vertical portion 71 includes a caulking portion 71 </ b> A that is crimped and crimped to one end portion of the electric wire 63. In the vicinity of the tip of the horizontal portion 72, a fixing opening 72A is formed.

  As shown in FIG. 5, L-shaped terminals 70 are arranged at the connection portion 61 of the high voltage cable 6 so as to be parallel to each other, and a horizontal portion 72 protrudes sideways. That is, in the connecting portion 61, the direction in which the horizontal portion 72 protrudes is a direction perpendicular to the direction in which the covering portion 6A extends from the connecting portion 61. At both side portions of the connecting portion 61 in the width direction, mounting protrusions 61A are projected. Each mounting protrusion 61A has a fixing opening 61B.

  On the other hand, the connecting portion 62 of the high voltage cable 6 is connected to a connected portion (not shown) provided on the left side of the motor 3 and the generator 4 in the left-right direction of the vehicle. The connecting portion 62 includes three terminals (not shown) protruding in the extending direction of the high voltage cable 6. These three terminals are connected to the other end of each electric wire 63, and the terminals are inserted and connected to the connected parts (not shown) of the motor 3 and the generator 4.

  Here, a connection structure between the connecting portion 61 of the high voltage cable and the inverter 2 will be described. As shown in FIG. 6, the three horizontal portions 72 of the connecting portion 61 of the high voltage cable 6 are inserted into the connected portion 2 </ b> A provided at the rear upper portion of the inverter 2 in the vehicle front-rear direction. At this time, the horizontal portion 72 is set so as to overlap the connected plate 2B. Then, the horizontal portion 72 is fixed to the inverter 2 side by screwing the bolt 65 into the fixing opening 72A of the horizontal portion 72 in a state where the horizontal portion 72 and the connected plate 2B overlap. FIG. 2 is a plan view showing a state in which the connecting portion 61 is attached to the inverter 2. FIG. 2 shows a state in which the cover 2 </ b> C at the top of the inverter 2 is removed.

  FIG. 3 is a rear view showing a state in which the connecting portion 61 of the high voltage cable 6 is fixed to the rear upper portion of the inverter 2 in the vehicle front-rear direction. A bolt 64 is screwed into the fixing opening 61B (see FIG. 5) of the mounting protrusion 61A of the connecting portion 61, and the connecting portion 61 is fixed to the rear upper portion of the inverter 2 in the vehicle front-rear direction. At this time, the covering portion 6 </ b> A of the high voltage cable 6 is routed downward along the rear side surface of the inverter 2 in the vehicle front-rear direction from the connection portion 61.

(Action / Effect)
As described above, in the present embodiment, the horizontal portion 72 of the L-shaped terminal 70 can be inserted in the horizontal direction with respect to the connected portion 2 </ b> A of the inverter 2. For this reason, the high voltage cable 6 can be guided downward along the extending direction of the vertical portion 71. Therefore, in the present embodiment, it is possible to prevent the high voltage cable 6 from extending toward the dash panel 5 side. In the present embodiment, the high voltage cable 6 does not have to be bent in a U-shape from the connecting portion 61 toward the other connecting portion 62 toward the rear side of the vehicle. Does not require a large space.

  In the present embodiment, since the high voltage cable 6 is not routed horizontally from the connected portion 2A of the inverter 2 toward the dash panel 5, the distance between the high voltage cable 6 and the dash panel 5 is increased. Can do. Therefore, when the vehicle receives an external force from the front, it is possible to prevent the inverter 2 from moving backward and the high voltage cable 6 from being sandwiched between the inverter 2 and the dash panel 5. In the present embodiment, there is no portion where the high voltage cable 6 is routed in the horizontal direction from the connected portion 2 </ b> A of the inverter 2 toward the dash panel 5, so that the space in the engine room 1 can be effectively utilized. Further, in the present embodiment, there is no portion where the high voltage cable 6 is routed in the horizontal direction from the connected portion 2A of the inverter 2 to the dash panel 5 and the portion where the U-turn is returned. Therefore, the length of the high voltage cable 6 can be shortened.

  Moreover, in this Embodiment, since the connection part 61 is hold | maintained with the volt | bolt 64 and the volt | bolt 65 with respect to the inverter 2 from two directions (an up-down direction and a horizontal direction), connection strength can be raised. In the present embodiment, since it is easy to insert a tool into the space between the inverter 2 and the dash panel 5, an operation of inserting and tightening the bolt 64 into the fixing opening 61B of the mounting protrusion 61A of the connecting portion 61 is performed. There is an advantage that it is easy to do.

DESCRIPTION OF SYMBOLS 1 Engine room 2 Inverter 2A Connected part 3 Motor 4 Generator 5 Dash panel 6 High voltage cable 7 Guest room 61 Connection part 62 Connection part 63 Electric wire 70 L-shaped terminal 71 Vertical part 72 Horizontal part

Claims (1)

A passenger compartment of the vehicle, a storage chamber that is located in front of the passenger compartment in the vehicle front-rear direction and stores the high voltage unit, a dash panel that partitions the passenger compartment and the storage chamber, and facing the dash panel of the high voltage unit A high voltage cable connected to a connected portion arranged at a position to be connected, and a high voltage cable routing structure comprising:
The connecting portion connected to the connected portion of the high voltage cable includes a vertical portion to which an end portion of an electric wire constituting the high voltage cable is connected, and a bent portion from an upper end of the vertical portion. An L-shaped terminal comprising a horizontal portion connected to the connected portion;
The high-voltage cable routing structure, wherein the high-voltage cable is routed downward from the connected portion between the high-voltage unit and the dash panel.

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