JP6027366B2 - Discharge device for power storage device - Google Patents

Description

  The present invention belongs to a technical field related to a discharge device for a power storage device that discharges a capacitor of the power storage device in a vehicle.

  Conventionally, mounting a power storage device that stores electricity such as a secondary battery (for example, a nickel metal hydride secondary battery, a nickel cadmium secondary battery, a lithium ion secondary battery, or a lead storage battery) on a vehicle such as an automobile has been well known. As this power storage device, it is also known that a capacitor (capacitor) is used in addition to the secondary battery (see, for example, Patent Documents 1 and 2).

JP 2006-89040 A JP 2006-281806 A

  As in the above conventional example, when a power storage device including a capacitor is mounted on a vehicle, when replacing the power storage device with a new one due to failure of the power storage device or when disassembling and discarding the vehicle, It is preferable to sufficiently discharge the capacitor of the power storage device.

  Therefore, it is conceivable to provide the vehicle with a discharge device that discharges the capacitor of the power storage device. The discharge device may be configured to form a discharge circuit that discharges the capacitor by an operator's operation. If the discharge device is connected to the power storage device in advance, the operator does not need to perform an operation of connecting the power storage device and the discharge device. From this point of view and from the viewpoint of facilitating the wiring and protection of the harness connecting the power storage device and the discharge device, the discharge device is preferably attached to the power storage device. It is also necessary for the operator to easily perform an operation for forming the discharge circuit.

  On the other hand, since the power storage device generates heat, it is preferably cooled as much as possible by the vehicle traveling wind, and is preferably not affected by the heat from the engine.

  The present invention has been made in view of such points, and the object of the present invention is to dispose the power storage device and the discharge device at appropriate positions, while preventing adverse effects due to heat of the power storage device. This is to improve the workability of discharge work by a person.

  The present invention has been made in view of such points, and the object of the present invention is to dispose the power storage device and the discharge device at appropriate positions, while preventing adverse effects due to heat of the power storage device. This is to improve the workability of discharge work by a person.

In order to achieve the above object, according to the present invention, for a discharge device of a power storage device that discharges the capacitor of a power storage device including a capacitor in a vehicle, the power storage device extends in a front-rear direction of the vehicle. At least a part of the power storage device is disposed below the lower end of the front side frame on the vehicle width direction outside of the side frame and on the vehicle front side of the front wheel house of the vehicle. The discharge device is attached to a portion below the lower end of the front side frame in the power storage device, and a discharge resistor for discharging the capacitor, and an operator uses the discharge resistor to An operation unit for performing an operation for forming a discharge circuit for discharging a capacitor, the discharge resistance unit, and the operation unit are included. A case-like case, a harness connecting the power storage device and the discharge device, the case having a case main body having an open portion for opening the inside of the case to the outside, and an open portion of the case main body A lid member that can be opened and closed, and the operation portion is configured to allow the operator to perform the operation when the opening portion of the case body is in an open state. The harness has a bent portion that enters the inside of the case from the upper end portion of the case body, and bends so as to extend downward and then U-turn and extend upward in the case. The configuration is as follows.

  With the above configuration, the power storage device is disposed on the outer side in the vehicle width direction than the front side frame and on the front side of the vehicle with respect to the front wheel house, so that the power storage device can be cooled by the vehicle traveling wind and the engine It can be made less susceptible to the heat from. By attaching the discharge device to a portion below the lower end of the front side frame in this power storage device, the operator can easily access the discharge device from the lower side of the vehicle and perform the discharge work. Alternatively, the operator can access the discharge device from the opening by forming an opening in the front portion of the front wheel house by turning the front lower portion of the mud guard constituting the front wheel house. Even if the amount of turning at the front lower portion is small, the discharge operation can be easily performed by accessing the discharge device. Further, since the discharge device is attached to the power storage device, the power storage device and the discharge device can be connected in advance, whereby the operator performs an operation of connecting the power storage device and the discharge device. The operation for forming a discharge circuit for discharging the capacitor is facilitated. Furthermore, it is easy to route and protect the harness connecting the power storage device and the discharge device.

Furthermore, a discharge resistor portion for discharging the capacitor, the operator, by a Turkey have an operating unit for performing an operation for forming a discharge circuit to discharge the capacitor by the discharge resistance unit, When the operator discharges the capacitor of the power storage device, if the discharge circuit is formed by the operation of the operation unit, the charge of the capacitor is consumed by the discharge resistance unit and the capacitor is discharged. Therefore, the capacitor can be easily discharged.

Furthermore, box-like case for housing the discharge resistor unit and the operation unit includes a case body having an opening for opening the inside of the case to the outside, a lid member for openably closing the opening portion of the case body It has the door, the operating unit, when the opening portion of the case body is open, the operator at the Turkey is configured to be capable of performing the operation, simple construction Thus, the discharge resistance portion and the operation portion can be protected and the operator can be prevented from operating the operation portion carelessly.

In addition, a harness connecting the power storage device and the discharge device enters the case from the upper end of the case body, and extends U-turns upward after extending downward in the case. By having a bent part that bends so as to extend, the water that has entered the case through the harness can be dropped to the lower side by the bent part, and the water passes through the harness to the electrical component. It can be prevented from reaching.

  It is preferable that a drainage hole for discharging water that has entered the inside of the case to the outside is provided in the lower side wall surface portion of the case body.

That is, since the discharge device (case) is located at a height position where the splashed water splashed during traveling of the vehicle is likely to be applied, water can easily enter the case. However, since the water that has entered the case is discharged from the drain hole to the outside of the case, it is possible to prevent water from accumulating in the case and causing electric leakage in the electric circuit in the case .

  The operation unit is configured by one of two connectors that form the discharge circuit by being connected to each other, and the other of the two connectors is fixed to the case body, The one connector is engaged with the case body at a position away from the other connector, and the operator releases the engagement with the case body and connects to the other connector. When the one connector is engaged with the case main body, it is preferable that the tip of the one connector faces upward.

  Thus, unlike the case where the operation unit is configured by an ON / OFF switching switch or the like, the operator does not inadvertently operate the operation unit to form a discharge circuit. However, when an operator wants to form a discharge circuit, the connectors can be connected to each other simply by connecting one connector to the other fixed connector. Can be formed. Therefore, it is possible to easily form the discharge circuit while preventing erroneous operation. Further, when one connector is engaged with the case main body, the tip end of the one connector faces upward, so that it is difficult for water to splash on the tip end side of the one connector.

As described above, according to the discharging device of the power storage device of the present invention, the power storage device is located on the outer side in the vehicle width direction with respect to the front side frame and on the vehicle front side with respect to the front wheel house. Disposed so as to be located below the lower end of the front side frame, and a discharge device is attached to a portion below the lower end of the front side frame in the power storage device, and discharges the capacitor of the power storage device. A discharge resistance portion for the operation, an operator performing an operation for forming a discharge circuit for discharging the capacitor by the discharge resistance portion, and a box-shaped housing for accommodating the discharge resistance portion and the operation portion. A case and a harness for connecting the power storage device and the discharge device, the case being open to open the inside of the case to the outside A case main body, and a lid member that closes the open portion of the case main body so as to be openable and closable, and the operation portion is operated by the operator when the open portion of the case main body is in an open state. The harness enters the inside of the case from the upper end portion of the case body, and extends U-turns upward after extending downward in the case. By having a bent portion that bends so as to extend, it is possible to improve the workability of the discharge work by the operator while preventing adverse effects due to the heat of the power storage device, and to easily perform the capacitor discharge work. be able to. In addition, the discharge resistance unit and the operation unit can be protected with a simple configuration, and an operator can be prevented from inadvertently operating the operation unit. Furthermore, the water that has entered the case through the harness can be dropped at the bent portion, and the water can be prevented from reaching the electrical component through the harness.

It is the perspective view seen from the vehicle left front side which shows the principal part of the front part of the vehicle by which the discharge device of the electrical storage apparatus which concerns on embodiment of this invention is mounted. It is a top view which shows the principal part of the front part of the said vehicle. It is the side view seen from the vehicle left side which shows the principal part of the front part of the said vehicle. It is a front view which shows the principal part (vehicle left side part) of the front part of the said vehicle. It is sectional drawing which cut | disconnected the left part rather than the left side frame in the front part of the said vehicle along the horizontal direction in the up-down direction intermediate position of an electrical storage apparatus. It is a top view of the front part of a vehicle showing the positional relationship of a power storage device, a discharge device, a generator, first to third harnesses, and a battery. It is the perspective view seen from the vehicle left diagonal rear side which shows the mode of wiring of the 1st-3rd harness in the electrical storage apparatus vicinity. It is a figure which shows the electrical connection relationship of a generator, an electrical storage apparatus, a discharge device, a power converter device, a battery, and a vehicle electric load. It is the figure seen from the vehicle width direction outer side which shows the state which removed the cover member from the case main body of the case of the discharge device. It is a bottom view which decomposes | disassembles and shows the case main body and lid member of the said case. It is sectional drawing cut | disconnected along the line equivalent to the XI-XI line | wire of FIG. 9 which abbreviate | omits the components in a case and shows the state which attached the cover member to the said case main body. It is sectional drawing cut | disconnected along the line equivalent to the XII-XII line | wire of FIG. 9, which shows the state which attached the cover member to the said case main body, abbreviate | omitting the components in a case. It is the figure seen from the vehicle width direction outer side which shows the case outer side of a cover member. It is the figure seen from the vehicle width direction inner side which shows the case inner side of a cover member. It is the figure seen from the vehicle front side which shows a cover member.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIGS. 1-3 shows the principal part of the front part of the vehicle 1 by which the discharge device 150 which concerns on embodiment of this invention is mounted. An engine (not shown) and a transmission for driving the left and right front wheels 3 of the vehicle 1 are disposed in the engine room 2 at the front portion of the vehicle 1. Hereinafter, the front, rear, left, right, up and down of the vehicle 1 are simply referred to as front, back, left, right, up and down, respectively.

  The engine and the transmission are arranged in the vehicle width direction (left-right direction) between a pair of left and right front side frames 5 described later, and in the present embodiment, the engine is located on the right side with respect to the transmission.

  A pair of left and right front side frames 5 extending in the front-rear direction are disposed at both ends in the vehicle width direction of the engine room 2. The rear portion of each front side frame 5 is a kick portion 5a whose height gradually decreases toward the rear side. A dash panel 9 that partitions the engine room 2 and the vehicle compartment is provided at substantially the same longitudinal position as the kick portion 5a.

  A wheel house panel 12 (mud guard) and a suspension tower 13 are provided on the outer sides of the left and right front side frames 5 in the vehicle width direction. Each wheel house panel 12 is flexible, is formed in an arc shape so as to cover the upper side of the front wheel 3, and constitutes the front wheel house 11 inside the arc. The lower end portions of the left and right suspension towers 13 are fixed to the left and right front side frames 5, respectively, and the upper end portions of the left and right suspension towers 13 are fixed to the left and right apron rain members 16, respectively.

  A front bumper 19 (see FIG. 5) is provided at the front end of the vehicle 1, and a bumper beam 18 extending in the vehicle width direction is provided in the front bumper 19. The left and right ends of the front bumper 19 extend to the rear side, and the rear ends of the front bumper 19 are located immediately before the left and right front wheel houses 11, respectively. The front and lower portions of the left and right wheel house panels 12 at the outer ends in the vehicle width direction are engaged and fixed to the rear end portions of the left and right ends of the front bumper 19 via engagement pins, respectively.

  Crash cans 6 are respectively disposed at the front ends of the left and right front side frames 5. Specifically, a flange portion 5 b is formed at the front end of each front side frame 5, and a flange portion 6 a is also formed at the rear end of the crash can 6. These flange portions 5b and 6a are fixed together by a fastening member 7 (bolts and nuts) in a state where the flange portions 5b and 6a are combined.

  The left and right ends of the bumper beam 18 are fastened and fixed to the front ends of the left and right crash cans 6, respectively. The left and right crash cans 6 absorb the impact by collapsing in the front-rear direction when the bumper beam 18 receives a collision load at the time of a frontal collision of the vehicle from the front side.

  Between the left and right crush cans 6 behind the bumper beam 18, a frame-shaped shroud 20 that supports a radiator (not shown) is disposed. An upper member 21 constituting the upper portion of the shroud 20 extends outward and rearward in the vehicle width direction, and both end portions of the upper member 21 are coupled to the front ends of the left and right apron rain members 16 via connecting members 22, respectively. Thereby, the shroud 20 is supported by the left and right apron rain members 16.

  A pedestrian protection stiffener 25 is fixed to the lower portion of the shroud 20 so as to protrude forward. This stiffener 25 contacts the lower part of the leg part of the pedestrian that collided with the front of the vehicle and pays off the leg part, thereby causing the pedestrian to fall on the hood of the vehicle 1 and thereby the leg part of the pedestrian. It prevents as much as possible the occurrence of injuries such as fractures. The front side of the stiffener 25 is covered with the front bumper 19.

  Suspension cross members 31 that extend in the vehicle width direction and support the left and right front wheels 3 at both left and right ends are disposed at substantially the same longitudinal position as the suspension tower 13 (see FIG. 2). The suspension cross member 31 has a main body portion 31a extending in the vehicle width direction, and left and right front extending portions 31b (see FIGS. 2 and 7) extending forward from the front edges of both left and right ends of the main body portion 31a. doing. Left and right front wheel suspension arms (lower arms) (not shown) are respectively supported at both left and right ends of the main body 31a, and the front wheels 3 are supported by the suspension cross member 31 through the front wheel suspension arms. Upwardly extending upper portions 31c (see FIGS. 2 and 7) are respectively provided at the left and right ends of the upper surface of the main body 31a, and the upper ends of the left and right upper extending portions 31c are the left and right front side frames. It is being fixed to the lower surface of 5, respectively.

  The front end portions of the lower surfaces of the left and right front extending portions 31b are connected by a connecting cross member 32 extending in the vehicle width direction. Thus, the main body portion 31a, the left and right front extending portions 31b, and the connecting cross member 32 of the suspension cross member 31 constitute a perimeter frame having a substantially rectangular frame shape in plan view.

  A cylindrical member 35 (see FIG. 4) extending upward is fixed to the front end portion of the upper surface of each of the front extending portions 31b, and the upper end of each cylindrical member 35 is the lower portion of the flange portion 5b of each front side frame 5. Are fastened and fixed to the lower surface of the fixing portion 5c formed by being bent substantially horizontally. Further, at the front end of each front extending portion 31b, a coupling member 36 coupled to both left and right end portions of the stiffener 25 is fastened and fixed.

  A portion from the left end of the stiffener 25 to the front lower end of the left wheel house panel 12 (lower portion of the left front corner of the vehicle 1) and a portion from the right end of the stiffener 25 to the front lower end of the right wheel house panel 12 (vehicle 1 is provided with an under cover 41 covering the lower surface of the corner (see FIGS. 1 and 2).

  A power storage device 70 for storing electricity is disposed outside the left front side frame 5 in the vehicle width direction (left side), that is, on the left outside of the engine room 2 and in front of the left front wheel house 11. Yes. The power storage device 70 is supported by the left front side frame 5 (specifically, the flange portion 5b). The power storage device 70 is disposed at a position shifted inward in the vehicle width direction with respect to the left front wheel 3 when the vehicle is viewed from the front (see FIGS. 4 and 5). Further, the power storage device 70 is disposed at substantially the same position as a power generator 85 described later in the front-rear direction (see FIG. 6). The power storage device 70 may be supported by the flange portion 6 a of the left crash can 6.

  The power storage device 70 has a holding member 77, and is fixedly attached to the flange portion 5 b of the left front side frame 5 by the holding member 77. The power storage device 70 has a plurality of capacitors (capacitors). The power storage device 70 may have one capacitor.

  The power storage device 70 has a shape extending in the vertical direction, and extends from a height position substantially the same as the upper end of the left front side frame 5 to a height position near the upper surface of the left under cover 41. That is, the power storage device 70 is disposed so that a part thereof is positioned below the lower end of the left front side frame 5. The entire power storage device 70 may be positioned below the lower end of the left front side frame 5.

  As shown in FIG. 6, a generator 85 (alternator) that is driven by the engine and generates electric power is disposed in the right front portion of the engine room 2. The generator 85 is provided at the front portion of the engine, and is rotated by a crankshaft of the engine via a belt provided on the right end surface of the engine to generate electric power. The power generated by the generator 85 is supplied to the power storage device 70 and stored. The generator 85 converts the kinetic energy of the vehicle 1 into electric power (regenerative electric power) particularly when the vehicle 1 is decelerated, and the regenerative electric power is stored in the power storage device 70. The generator 85 and the power storage device 70 are connected by a first harness 86 (see FIGS. 6 and 7), and power from the generator 85 is supplied to the power storage device 70 via the first harness 86. .

  The generator 85 is located at the rear side of the connecting cross member 32 at the substantially same height as the front side frame 5 in the right front portion in the engine room 2. The first harness 86 includes a hanging portion 87 extending obliquely downward from the generator 85 toward the vehicle width direction center of the connection cross member 32, and a horizontal portion 88 extending in the vehicle width direction along the connection cross member 32. 7), and the left end portion of the horizontal portion 88 is bent upward in the vicinity of the vehicle width direction inner side of the front extending portion 31b of the suspension cross member 31, and is connected to the holding member 77. Connected to the unit 78.

  A first protector member 89 (see FIGS. 6 and 7) that protects the horizontal portion 88 of the first harness 86 is provided on the rear surface of the connecting cross member 32. The first protector member 89 includes a square pipe-shaped protector main body 90 through which the horizontal portion 88 of the first harness 86 is inserted, and a mounting bracket 91 provided on the protector main body 90. The mounting bracket 91 is fixed to the upper surface of the connecting cross member 32 via a fixing member such as a bolt or an engaging fixture, whereby the horizontal portion 88 of the first harness 86 is held by the first protector member 89. In this state, the connection cross member 32 is fixed to the rear surface. Thus, by fixing the horizontal part 88 to the connection cross member 32, the 1st harness 86 can be supported stably. Further, by fixing the first harness 86 (horizontal portion 88) to the rear surface of the connecting cross member 32, the first harness 86 can be effectively protected from the impact load at the time of a frontal collision of the vehicle 1. The occurrence of a situation where the rear displacement of the shroud 20 or the radiator supported by the shroud 20 is obstructed by the first harness 86 can be prevented.

  Although not shown in detail, a power conversion device 92 that converts power from the power storage device 70 between the seat cushion of the left front seat in the vehicle interior of the vehicle 1 and the vehicle compartment floor (see FIG. 8). Is arranged. As shown in FIG. 8, in the present embodiment, the power is stored from the power storage device 70 to the battery 121 composed of a general lead storage battery and the vehicle electrical load 130 of the vehicle 1 via the power conversion device 92. Electricity (electric power) is supplied. The vehicle electrical load 130 is, for example, an audio device, a navigation device, a lighting device, or the like. Surplus electricity (electric power) that cannot be used by the vehicle electrical load 130 from the power storage device 70 is supplied to and stored in a battery 121 that supplies electricity (electric power) to the vehicle electrical load 130.

  Power conversion device 92 includes a DC / DC converter that steps down the power from power storage device 70 and outputs the reduced power to battery 121 and vehicle electrical load 130. That is, in this embodiment, since the voltage (for example, 25 V) on the generator 85 and the power storage device 70 side is higher than the voltage (12 V) on the battery 121 and the vehicle electrical load 130 side, the battery 121 and the vehicle from the power storage device 70. When power is supplied to the electric load 130, it is necessary to transform the electric load 130. For this purpose, a power conversion device 92 including a DC / DC converter is provided. As described above, the power generated by the generator 85 can be efficiently stored in the power storage device 70 by increasing the voltage on the generator 85 and the power storage device 70 side. However, the present invention is not limited to this, and the voltage on the battery 121 and the vehicle electrical load 130 side may be higher. In this case, the power conversion device 92 boosts the power from the power storage device 70 to increase the battery. 121 and the vehicle electrical load 130 may be output.

  Similar to the power storage device 70, the power conversion device 92 is disposed on the left side portion of the vehicle 1. The power storage device 70 is disposed on the front side of the left front wheel house 11, while the power conversion device 92 is disposed on the rear side of the left front wheel house 11. The power storage device 70 and the power conversion device 92 are connected by a second harness 94, and power is supplied from the power storage device 70 to the power conversion device 92 via the second harness 94. The end of the second harness 94 on the power storage device 70 side is connected to the connecting portion 78.

  The power converter 92 and the battery 121 are connected by a third harness 95, and power is supplied from the power converter 92 to the battery 121 through the third harness 95.

  The second and third harnesses 94 and 95 are bundled together in the vicinity of the rear side of the power storage device 70 and travel toward the power conversion device 92. That is, the second and third harnesses 94 and 95 pass through the upper side of the left front wheel house 11 (between the wheel house panel 12 and the wheel apron member 16 installed thereabove), and then the dash panel 9 After extending downward along the front surface of the left end, it extends rearward along the lower surface of the passenger compartment floor, and from there is introduced into the passenger compartment through an insertion hole provided in the passenger compartment floor to convert the power. Connected to device 92. The second and third harnesses 94 and 95 are covered with one covering tube 108 fixed to the wheel apron member 16 via a plurality of engagement fixtures 109 at the upper position of the left front wheel house 11. (See FIG. 7).

  As shown in FIG. 6, the battery 121 is disposed in contact with the inner surface in the vehicle width direction of the left front side frame 5 in the engine room 2. The battery 121 is fixed to the left front side frame 5. Thus, the battery 121 is also disposed on the left side portion of the vehicle 1, similarly to the power storage device 70 and the power conversion device 92.

  Thus, by connecting the power converter 92 and the battery 121 by the third harness 95, power is supplied to and stored in the battery 121 with a voltage stepped down from the power converter 92. The battery 121 and the vehicle electrical load 130 are connected via a harness (not shown). Electric power is supplied from the battery 121 to the vehicle electrical load 130 via the harness, and the power storage device 70 Electric power is supplied to the vehicle electrical load 130 via the second harness 94, the power converter 92, the third harness 95, and the harness (not shown).

  Here, when the power storage device 70 is replaced with a new one due to a failure of the power storage device 70 or when the vehicle 1 is disassembled and discarded, it is preferable to sufficiently discharge the capacitor of the power storage device 70. Therefore, in the present embodiment, a discharge device 150 that discharges the capacitor of the power storage device 70 is attached to the power storage device 70. In the present embodiment, as will be described later, when discharging the capacitor, the operator opens the front lower portion of the left wheel house panel 12 in the front side portion of the left front wheel house 11 with the front lower portion on the upper side and the vehicle width direction inward. The discharge device 150 is required to access the discharge device 150 through this opening and perform the discharge work. From the viewpoint of reducing the amount of turning at the front lower portion of the left wheel house panel 12 as much as possible, The device 70 is attached to a portion below the lower end of the left front side frame 5 (in the present embodiment, near the lower end portion of the power storage device 70). In the present embodiment, from the viewpoint of facilitating the discharge operation when the discharge device 150 is accessed through the opening, the discharge device 150 is provided at the lower end of the left front side frame 5 in the power storage device 70. It is attached to the lower side and the outer side in the vehicle width direction.

  The discharge device 150 includes a box-shaped case 151. The case 151 includes a resin case main body 161 having an open portion 161a (see FIGS. 9, 11, and 12) that opens the inside of the case 151 to the outside, and the open portion 161a of the case main body 161 can be opened and closed. And a resin lid member 162 to be closed. The open part 161a of the case main body 161a faces the vehicle width direction outer side (left side), and the lid member 162 is located outside the case main body 161 in the vehicle width direction when the open part 161a of the case main body 161 is in the closed state. It is located and engaged and fixed to the case main body 161. Further, the lid member 162 is configured to be detachable from the case main body 161, and the lid member 162 is detached from the case main body 161 (the engagement between the lid member 162 and the case main body 161 is released). The open part 161a of the main body 161 is configured to be in an open state.

  As shown in FIGS. 9 to 12, the case main body 161 has a substantially rectangular parallelepiped shape, and the open portion 161 a of the case main body 161 is on the outer side in the vehicle width direction of the case main body 161 (front side in FIG. 9). It is provided over substantially the whole and has a substantially rectangular shape when viewed from the outside in the vehicle width direction. That is, the case main body 161 extends outward in the vehicle width direction to the vehicle width direction inner wall surface portion 161v that is substantially rectangular when viewed from the vehicle width direction outer side, and to the front and rear and upper and lower peripheral portions of the vehicle width direction inner wall surface portion 161v. The front side wall surface portion 161w, the rear side wall surface portion 161x, the upper side wall surface portion 161y, and the lower side wall surface portion 161z are provided to stand upright.

  The front side wall surface portion 161v of the case body 161 is formed with a frame-shaped portion 161b that forms a rectangular frame shape together with the front side wall surface portion 161v when viewed from the outside in the vehicle width direction. In the frame-like portion 161b, a protruding portion 161d is formed to project from an end surface on the outer side in the vehicle width direction of the vertically extending portion 161c extending in the vertical direction in parallel with the front side wall surface portion 161v. Moreover, the 1st engaging claw 161e is formed in the surface (rear surface) inside the frame-shaped part 161b in the up-and-down extending part 161c. Further, second and third engagement claws 161f and 161g are formed at two positions on the rear surface of the rear side wall surface portion 161w of the case main body 161 that are separated from each other in the vertical direction.

  A drainage notch 161h is formed at each of the front and rear end portions of the end surface (end surface on the opening portion 161a side) of the lower side wall surface portion 161z of the case main body 161 in the vehicle width direction. These drainage notches 161h serve as drainage holes for discharging water that has entered the case 151 to the outside when the opening 161a is closed by the lid member 162. Here, when the opening 161a is closed by the lid member 162, the lower side of the drainage notch 161h is covered by a lower edge 162z described later of the lid member 162 and is not visible from the outside. Since a gap is formed between the lower edge portion 162z of the lid member 162 and the lower side wall surface portion 161z of the case main body 161, the water in the case 151 is discharged to the outside from the drainage cutout portion 161h. On the other hand, since the lower side of the drainage cutout portion 161h is covered with the lower side edge portion 162z of the lid member 162, splashes and the like splashed when the vehicle 1 travels through the drainage cutout portion 161h. Intrusion can be prevented.

  On the rear part of the end surface on the outer side in the vehicle width direction of the upper wall surface 161y of the case main body 161, a harness insertion cut-off is inserted so that plus and minus harnesses 171 and 172, which will be described later, enter the inside from the outside of the case 151. A notch 161i is formed. Further, on the upper surface of the upper wall surface portion 161y of the case main body 161, a harness support portion 161j that supports the plus side and minus side harnesses 171 and 172 is formed to protrude upward.

  Attachment portions 161k for attaching the case main body 161 to the power storage device 70 are formed on the upper surface of the upper wall surface portion 161y and the lower surface of the lower wall surface surface portion 161z of the case main body 161 by the fastening members 164, respectively.

  The rear portion of the end surface on the outer side in the vehicle width direction of the upper wall surface portion 161y and the lower wall surface portion 161z of the case body 161 is inclined inward in the vehicle width direction toward the rear side, and the end surface on the outer side in the vehicle width direction of the rear wall surface portion 161x. Is located on the inner side in the vehicle width direction from the end surface on the outer side in the vehicle width direction of the front side wall surface portion 161w.

  As shown in FIGS. 10 to 15, the lid member 162 is engaged and fixed to the case main body 161 so as to cover the open portion 161 a of the case main body 161 from the outside in the vehicle width direction. Specifically, the lid member 162 includes a substantially rectangular plate-like base portion 162v that covers the open portion 161a of the case main body 161, as viewed from the vehicle width direction outer side (front side in FIG. 13), and front and rear sides of the base portion 162v. Upper and lower peripheral edges (front edge 162w, rear edge 162x, upper edge 162y and lower edge 162z) are the front wall surface 161w, rear wall surface 161x, upper wall surface 161y and lower wall of the case body 161. The end of the surface portion 161z on the outer side in the vehicle width direction protrudes toward the case main body 161 (in the vehicle width direction) so as to surround the outer end of the case main body 161.

  The front edge 162w of the lid member 162 is formed with a flexible portion 162a that extends inward in the vehicle width direction and then bends outward in the vehicle width direction and in the front direction and has a substantially V shape when viewed from the top and bottom. The flexible portion 162a is inserted into the frame-shaped portion 161b of the case main body 161 from the outside in the vehicle width direction.

  At the time when the insertion of the flexible portion 162a is substantially completed at the intermediate portion in the vertical direction of the front portion of the flexible portion 162a (the portion on the front side of the bent portion), the first engaging claw 161e of the case main body 161 is engaged. An engaging notch 162b is formed. When the flexible portion 162a is inserted into the frame-shaped portion 161b, the front portion of the flexible portion 162a is bent rearward by the first engaging claws 161e, and when the insertion of the flexible portion 162a is substantially completed, When the first engaging claw 161e enters the engaging notch 162b, the front portion of the flexible portion 162a is slightly restored to the front by the restoring force, and the first engaging claw 161e and the engaging notch 162b are restored. The surface that faces outward in the vehicle width direction is engaged.

  Disengagement operation portions 162c for releasing the engagement between the first engagement claws 161e and the engagement notches 162b are respectively provided on both upper and lower sides of the engagement notches 162b in the front portion of the flexible portion 162a. Is provided. When the operator presses the disengagement operation portion 162c to the rear side (side approaching the base portion 162v), the front portion of the flexible portion 162 bends to the rear side, and the first engagement claw 161e and the engagement notch portion are formed. The engagement with 162b can be released.

  The rear edge 162x of the lid member 162 is provided with two engagement holes 162d that engage with the second and third engagement claws 161f and 161g, respectively. When closing the open part 161a of the case body 161 with the lid member 162, the two engagement holes 162d of the lid member 162 and the second and third engagement claws 161f and 161g are engaged with each other. The flexible member 162a of the lid member 162 is shaped like a frame while the lid member 162 is rotated around a virtual axis extending in the vertical direction at the rear end (portion of the engagement hole 162d) of the lid member 162. The first engaging portion 161e and the engaging notch portion 162b are engaged with each other by being inserted into the portion 161b. In this way, the lid member 162 is attached (engaged and fixed) to the case main body 161, and the open portion 161a of the case main body 161 is closed (closed by the lid member 162).

  In order to remove the lid member 162 from the case main body 161, the engagement release operation portion 162c is pressed rearward to release the engagement between the first engagement portion 161e and the engagement notch portion 162b. The release operation portion 162c is moved outward in the vehicle width direction, and the flexible portion 162a is pulled out from the frame-shaped portion 161b. Then, following the pulling-out operation, the front end (flexible portion 162a) of the lid member 162 moves to the outside in the vehicle width direction and to the rear, centering on the virtual axis, contrary to the above attachment. Then, the lid member 162 is rotated. Thereby, the lid member 162 can be removed from the case main body 161.

  The rear portion of the lid member 162 is inclined inward in the vehicle width direction toward the rear side corresponding to the above-described inclination of the end surfaces on the outer side in the vehicle width direction of the upper wall surface portion 161y and the lower wall surface surface portion 161z of the case main body 161. Accordingly, even when the space between the power storage device 70 and the front lower portion of the left wheel house panel 12 is narrow, the discharge device 150 (case 151) can be easily placed on the outer side of the power storage device 70 in the vehicle width direction. Can be attached to.

  In the case 151 of the discharge device 150, a discharge resistor 152 for discharging the capacitor (see FIG. 8) and a discharge circuit for allowing the operator to discharge the capacitor by the discharge resistor 152 are formed. An operation unit 153 (see FIGS. 8 and 9) for performing the above operation, and a visual recognition unit 154 (see FIGS. 8 and 9) that can be visually recognized by the operator so that the operator can visually confirm the discharge state of the capacitor. ) And is housed.

  The discharge resistor 152 is formed by connecting a plurality of resistors (chip resistors in the present embodiment) arranged on a substrate (not shown) in series. The discharge resistance unit 152 can also be configured with a single resistor. The substrate is fixed to the case main body 161. The substrate and the discharge resistance portion 152 are located in the vehicle width direction inner portion of the case main body 161 and are sealed by a resin mold 165 provided over substantially the entire vehicle width direction inner portion of the case main body 161. For this reason, in FIG. 9, the substrate and the discharge resistor 152 are hidden behind the resin mold 165 and cannot be seen. As described above, the substrate and the discharge resistance portion 152 are hermetically sealed by the resin mold 165, so that leakage due to water that has entered the case 151 can be prevented. In FIG. 11 and FIG. 12, parts in the case 151 are omitted.

  The operation unit 153 can be regarded as a switch that is operated by an operator to form (close) a discharge circuit that discharges the capacitor. In the present embodiment, as will be described in detail later, the operation unit 153 includes a minus-side connector 174 among the plus-side and minus-side connectors 173 and 174 that are connected to each other to form the discharge circuit. Yes. These connectors 173 and 174 are in a disconnected state before the operation by the operator, and as a result, the switch is in an OFF state. When the connectors 173 and 174 are connected to each other, the switch is turned on, and the discharge circuit is formed (closed).

  In the present embodiment, the visual recognition unit 154 includes an LED provided on the substrate and connected in series to a plurality of resistors of the discharge resistance unit 152. This LED protrudes outward in the vehicle width direction from the resin mold 165, and if the open portion 161a of the case main body 161 is in the open state, the operator can visually recognize the LED.

  The discharge resistance portion 152, the visual recognition portion 154, the plus side connector 173, and the minus side connector 174 (operation portion 153) have a relationship as shown in FIG. The opposite side of the discharge resistance portion 152 from the visual recognition portion 154 is connected to the connection portion 78 that is a positive terminal of the power storage device 70 via a positive harness 171 (see FIG. 9). On the other hand, minus side connector 174 (operation unit 153) is connected to a minus terminal (not shown) of power storage device 70 via minus side harness 172 (see FIG. 9). The minus terminal is connected to the vehicle body member (front side frame 5) via the holding member 77 and grounded.

  The plus side and minus side harnesses 171, 172 enter the case 151 (inside the case body 161) through the harness insertion notch 161 i in the upper wall surface portion 161 y of the case body 161, and in the case body 161. The upper portion includes bent portions 171a and 172a that are bent so as to extend downward and then U-turn after extending downward. These bent portions 171a and 172a play a role of draining water.

  That is, when water intrudes into the case 151 from the gap between the harness insertion notch 161i and the plus and minus harnesses 171, 172, the water is removed by making the gap sufficiently small. It enters the case 151 through at least one of the 171 and 172. Here, if both the harnesses 171 and 172 extend downward or obliquely downward in the case 151, the water that has entered the case 151 travels along the plus-side harness 171 and / or the minus-side harness 172, which will be described later. The connection terminal 166 and / or the negative connector 174 is reached, and this causes a leakage.

  However, in this embodiment, the water that has traveled to the bent portions 171a and 172a cannot rise upward along the bent portions 171a and 172a, but falls downward. Therefore, the bent portions 171a and 172a serve as a drainer and prevent the water from reaching the connection terminal 166 and the minus side connector 174. The water dropped from the bent portions 171a and 172a is discharged to the outside from the drainage notch 161h. The plus side and minus side connectors 173 and 174, the LEDs of the visual recognition part 154, and the connection terminal 166 are arranged so as to be shifted from the positions directly below the bent parts 171a and 172a so that the water dropped from the bent parts 171a and 172a is not applied. I have to.

  The plus side and minus side harnesses 171 and 172 extend from the bent portions 171a and 172a to the front side along the upper wall surface portion 161y on the outer side in the vehicle width direction of the resin mold 165 in the case main body 161, respectively. Each corner is bent downward at the corners of 161y and the front wall surface portion 161w. Thereafter, the plus-side harness 171 extends downward and rearward, and is connected to a connection terminal 166 provided on the substrate and protruding outward from the resin mold 165 in the vehicle width direction. The connection terminal 166 is electrically connected to the plus-side connector 173 via the discharge resistance portion 152 and the visual recognition portion 154 on the substrate. The plus side connector 173 is fixed on the substrate. Thus, the plus side connector 173 is fixed to the case main body 161 through the board so as not to move. The plus side connector 173 protrudes outward from the resin mold 165 in the vehicle width direction with the tip side thereof facing outward in the vehicle width direction.

  The minus-side harness 172 extends from the corner to the lower side in front of the plus-side harness 171 and then U-turns and extends upward to be connected to the minus-side connector 174. The minus side connector 174 is formed between the front side wall surface part 161w of the case main body 161 and the standing wall part 161l formed at a position away from the front side wall surface part 161w on the inner side of the case at the center in the vertical direction of the inner wall surface part 161v in the vehicle width direction. And is engaged with the front wall surface portion 161w and the standing wall portion 161l by the elastic force of the front wall surface portion 161w. That is, the minus side connector 174 is engaged with the case main body 161 at a position away from the plus side connector 173. In this engaged state, the distal end side of the minus side connector 174 faces upward. This makes it difficult for water to be applied to the distal end side of the negative connector 174.

  The engagement can be released by the operator holding the minus side connector 174 and pulling it out of the gap. The operator releases the engagement and moves the minus side connector 174 from the engagement position. Thus, an operation of connecting to the plus side connector 173 can be performed. In order to connect the minus side connector 174 to the plus side connector 173, with the tip of the minus side connector 174 facing the tip of the plus side connector 173, the minus side connector 174 is moved to the inside in the vehicle width direction while moving to the plus side. The connector 173 is coupled. This coupling is performed by inserting and fitting one of the plus side and minus side connectors 173 and 174 into the other.

  The plus side and minus side harnesses 171 and 172 meander in the case 151 between the harness insertion notch 161i to the connection terminal 166 and the minus side connector 174. This is to prevent the two harnesses 171 and 172 from being cut even if tension is applied to both the harnesses 171 and 172 with the extra length provided to the wire 172.

  When the switch is turned on by the operation of the operation unit 153 (connection operation of the minus side connector 174 to the plus side connector 173), the discharge circuit is formed, whereby the charge of the capacitor is changed to the discharge resistance unit 152. Then, the charge of the capacitor is consumed by the discharge resistor 152, and thus the capacitor is discharged. The operation unit 153 is not limited to the above-described configuration, and any operation is possible as long as the discharge circuit can be formed by an operator's operation and the capacitor can be continuously discharged until the end. It may be configured. The operation unit 153 can be configured by, for example, an ON / OFF switching switch.

  The LED of the visual recognition unit 154 is turned on when the voltage applied to the LED (that is, the voltage of the capacitor) is equal to or higher than a predetermined voltage, and is turned off when the voltage is lower than the predetermined voltage. The predetermined voltage is a voltage that can be considered that the capacitor has been sufficiently discharged and the discharge has ended. Thus, the operator can determine the discharge state of the capacitor by turning on / off the LED, and determine that the discharge has been completed if the LED is turned off. The visual recognition unit 154 is not limited to the LED, but may be any type as long as the operator can visually confirm the discharge state of the capacitor. For example, the visual recognition unit 154 may be formed of a liquid crystal that displays the voltage of the capacitor numerically or bar-displays. In the case of bar display, the length of the bar to be lit is shortened as the discharge of the capacitor proceeds (the voltage of the capacitor decreases).

  The operation unit 153 is configured to allow an operator to perform the operation when the opening part 161a of the case main body 161 is in the open state. The visual recognition part 154 is an opening part of the case main body 161. When 161a is in an open state, it is comprised so that an operator can visually recognize. That is, when performing the discharge work, the operator needs to remove the lid member 162 from the case main body 161 and open the open portion 161a of the case main body 161.

  On the inner surface (back surface) of the case 162 of the base portion 162v of the lid member 162, there is provided an explanation portion 163 in which an explanation for the worker to grasp the contents of the capacitor discharge operation (discharging operation procedure) is described. ing. In the present embodiment, the description portion 163 is directly provided on the inner surface of the case of the base portion 162v of the lid member 162 by providing irregularities on the molding surface of the mold of the lid member 162. However, the present invention is not limited to this, and the description unit 163 may be configured with a label attached to the lid member 162, for example. Moreover, you may provide the description part 163 in the surface of the case front side of the base 162v of the cover member 162. FIG.

  In the present embodiment, the explanation unit 163 illustrates the procedure of the discharge work, and indicates that the worker works sequentially from the first to the fourth number.

  Separately from the above-described explanation unit 163, discharge of the power storage device 70 is performed at a place (for example, the upper surface of the upper member 21) that can be seen by the operator when the hood is opened before the power storage device 70 is replaced or the vehicle 1 is disassembled. It is preferable to attach a caution label describing that it is necessary to perform, the position of the power storage device 70 and the discharge device 150 (particularly the position of the discharge device 150), and the access method to the discharge device 150. Further, in the present embodiment, since the explanation part 163 is provided on the inner surface of the case of the base part 162v of the lid member 162, the caution label also describes that the work for removing the lid member 162 is performed during the discharge work. deep. When the explanation portion 163 is provided on the surface of the case 162 side of the base portion 162v of the lid member 162, the fact that the lid member 162 is removed is described in the explanation portion 163 instead of the caution label. May be.

  In order to discharge the capacitor of the power storage device 70 by the discharge device 150, the worker first releases the engagement between the left wheel house panel 12 and the front bumper 19. Then, an opening is formed in the front portion of the left front wheel house 11 with the front lower portion of the left wheel house panel 12 facing upward and inward in the vehicle width direction. At this time, in order to make it easier to turn the front lower portion of the left wheel house panel 12 to the upper side and the inner side in the vehicle width direction, the handle of the vehicle 1 is previously cut to the right side and the front portion of the left front wheel 3 is directed to the inner side of the vehicle. It is preferable.

  Subsequently, a hand is inserted into the front bumper 19 from the opening, and the disengagement operation portion 162c is pressed rearward to disengage the first engagement portion 161e from the engagement notch portion 162b. In this state, the disengagement operation portion 162c is moved outward in the vehicle width direction, and the flexible portion 162a is pulled out from the frame-shaped portion 161b. Then, following the pulling-out operation, the lid member 162 is moved to the front end of the lid member 162 around the imaginary axis extending in the vertical direction at the rear end (portion of the engagement hole 162d) of the lid member 162. The part (flexible part 162a) is rotated so as to move outward in the vehicle width direction and rearward. That is, when the operator inserts his hand through the opening and removes the lid member 162 from the case main body 161, the operator releases the engagement release operation portion 162c (lid member) after pressing the engagement release operation portion 162c to the rear side. The front end portion of 162 can be easily detached from the case body by pulling it toward the operator side (rear side) while moving it outward in the vehicle width direction. In this way, the lid member 161 of the case 151 is removed from the case main body 162, and the open portion of the case main body 161 is opened. The lid member 162 removed from the case main body 161 is taken out of the vehicle 1 through the opening. Since the description part 163 is provided on the lid member 151 b, the operator can easily perform the discharge work while looking at the description part 163.

  Next, the operation unit 153 in the case main body 151 a is operated to form (close) a discharge circuit that discharges the capacitor by the discharge resistance unit 152. That is, the minus side connector 174 is pulled out from the gap between the front side wall surface portion 161w and the standing wall portion 161l to release the engagement with the case main body 161 (the circled number 1 in the explanation portion 163). 174 is moved from the engagement position to the position of the plus side connector 173, and the minus side connector 174 is moved inward in the vehicle width direction with the tip of the minus side connector 174 facing the tip of the plus side connector 173. By connecting to the plus-side connector 173, the minus-side connector 174 is connected to the plus-side connector 173 (circle number 2 in the explanation part 163).

  Thereby, the discharge of the capacitor is started. The operator confirms the discharge state by looking at the LED of the visual recognition part 154 (circle number 3 in the explanation part 163). That is, when the LED is lit, the operator determines that the discharge is in progress, and when the LED is turned off, the operator determines that the discharge has ended, and the power storage device 70 and the vehicle 1 can be discarded. Yes (circle number 4 in the explanation part 163). Note that the operator can determine that the capacitor has already been discharged if the LED is not lit from the beginning. Thus, the capacitor discharging operation is completed.

  Therefore, in the present embodiment, the power storage device 70 is disposed on the outer side (left side) in the vehicle width direction than the left front side frame 5 and on the front side of the left front wheel house 11. It can be cooled by the vehicle traveling wind and can be made less susceptible to the influence of heat from the engine. Since the discharge device 150 is attached to a portion below the lower end of the left front side frame 5 in the power storage device 70, the operator can set the front lower portion of the left wheel house panel 12 to the upper side and the vehicle width direction inner side. Even when the front portion of the left front wheel house 11 is formed with an opening in the front portion of the left front wheel house 11, the discharge device 150 is accessed from the opening to discharge even if the front portion of the left wheel house panel 12 is small. Work can be done easily. In addition, since the discharge device 150 is attached to the power storage device 70, the power storage device 70 and the discharge device 150 can be connected in advance, whereby the operator can connect the power storage device 70 and the discharge device 150 to each other. Therefore, the operation for forming the discharge circuit for discharging the capacitor is facilitated. Further, it is easy to route and protect the plus side and minus side harnesses 171 and 172 connecting the power storage device 70 and the discharge device 150.

  Here, as described above, when the discharge device 150 is attached to a portion below the lower end of the left front side frame 5 in the power storage device 70, the discharge device 150 (case 151) jumps up when the vehicle 1 travels. It will be located in the height position where it is easy to apply splashed water. However, in this embodiment, the substrate and the discharge resistor 152 are sealed by the resin mold 165, the water is drained by the bent portions 171a and 172a of the plus side and minus side harnesses 171 and 172, and the water is discharged by the drain notch portion 161h. At the time of engagement of the minus side connector 174 to the case body (attitude where the tip side faces upward), the plus side and minus side connectors 173 and 174, the LED of the visual recognition part 154 and the bent part 171a of the connection terminal 166, Even if water enters the case 151 by the arrangement in which the water dropped from the 172a is not applied, no leakage occurs.

  The present invention is not limited to the embodiment described above, and can be substituted without departing from the spirit of the claims.

  For example, in the above-described embodiment, the discharge device 150 is attached to a portion below the lower end of the left front side frame 5 in the power storage device 70 and outside the vehicle width direction, but the discharge device 150 is attached to the power storage device 70. The position may be, for example, the front side or the rear side part as long as it is a part below the lower end of the left front side frame 5 in the power storage device 70.

  In the above embodiment, the operator forms an opening in the front portion of the left front wheel house 11 by turning the front lower portion of the left wheel house panel 12 upward and inward in the vehicle width direction. Although the discharge device 150 is accessed, the present invention is not limited to this. For example, the discharge device 150 may be accessed by removing or turning the under cover 41. In this way, the discharge operation can be easily performed at any position as long as the mounting position of the discharge device 150 in the power storage device 70 is a portion below the lower end of the left front side frame 5 in the power storage device 70. .

  The above-described embodiments are merely examples, and the scope of the present invention should not be interpreted in a limited manner. The scope of the present invention is defined by the scope of the claims, and all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  The present invention is useful for a discharge device of a power storage device that discharges a capacitor of the power storage device in a vehicle.

DESCRIPTION OF SYMBOLS 1 Vehicle 5 Front side frame 11 Front wheel house 70 Power storage device 150 Discharge device 151 Case 152 Discharge resistance part 153 Operation part 154 Visual recognition part 161 Case main body 161h Notch part for drainage (drain hole)
162 Lid member 171 Plus side harness
171a bent part 172 minus side harness
172a bent part 173 plus side connector 174 minus side connector (operation part)

Claims (3)

A discharge device for a power storage device that discharges the capacitor of a power storage device including a capacitor in a vehicle,
The power storage device is at least part of the power storage device from the lower end of the front side frame on the vehicle width direction outside of the front side frame extending in the front-rear direction of the vehicle and on the vehicle front side of the front wheel house of the vehicle. Is also located on the lower side,
The discharge device is attached to a portion below the lower end of the front side frame in the power storage device ,
A discharge resistor for discharging the capacitor;
An operator performs an operation for forming a discharge circuit for discharging the capacitor by the discharge resistance unit,
A box-shaped case for accommodating the discharge resistance portion and the operation portion;
A harness for connecting the power storage device and the discharge device;
The case has a case main body having an open portion that opens the inside of the case to the outside, and a lid member that closes the open portion of the case main body so as to be opened and closed.
The operation unit is configured to allow the operator to perform the operation when the open part of the case body is in an open state.
The harness has a bent portion that enters the inside of the case from the upper end portion of the case body, and bends so as to extend downward and then U-turn and extend upward in the case. A discharge device for a power storage device. The discharge device for a power storage device according to claim 1 ,
A discharge device for a power storage device, wherein a drain hole for discharging water that has entered the case to the outside is provided in a lower side wall surface portion of the case body. The discharge device of the power storage device according to claim 1 or 2 ,
The operation unit is configured by one of two connectors that form the discharge circuit by being connected to each other,
The other connector of the two connectors is fixed to the case body,
The one connector is engaged with the case body at a position away from the other connector, and the operator releases the engagement with the case body and connects to the other connector. Is configured to be possible,
A discharging device for a power storage device, wherein when one of the connectors is engaged with the case main body, a tip of the one connector faces upward.

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