JP2016097733A - Electric vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric vehicle which unfailingly achieves space saving in a center console and cost reduction without providing a special reinforcement member in the center console.SOLUTION: In an electric vehicle 10, a center console 22 is provided at a center of a vehicle cabin 18. An inverter device 24, a relay device 26, an impact resistant member 30, a battery ECU 32, and a battery module 34 are disposed in the center console 22. The relay device 26 is fixed to one end part of the impact resistant member 30 when viewed in a vehicle fore and aft direction. The battery ECU 32 is fixed to the other end part of the impact resistant member 30 when viewed in the vehicle fore and aft direction.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electric vehicle that includes a motor driven by electricity and travels by a rotating operation of the motor.

  For example, in a hybrid vehicle or an electric vehicle such as an EV, a high-voltage power storage module including a storage battery group (battery module) in which a plurality of storage batteries (battery cells) are stacked is mounted as a motor driving power source. For this reason, in order to drive and control the motor, the output of the high-voltage power storage module is sent to the inverter device via a relay device having a contactor, a fuse, and the like, and direct-current power is converted into alternating current and supplied to the motor.

  Therefore, in addition to the battery, the relay device, and the inverter device (power control unit: PCU), the battery management device (ECU) that manages the battery is mounted on the electric vehicle. It is desired to accommodate these devices in a single casing. For example, it is conceivable to accommodate these devices in a center console formed in the center of the vehicle cabin.

  At that time, various reinforcing structures are employed in the center console in order to ensure the protection of the occupant during a side collision. For example, an impact resistant structure for a vehicle disclosed in Patent Document 1 is known. In this vehicle impact resistant structure, the reinforcing member is provided with a pair of pressure receiving wall portions extending in the front-rear direction of the vehicle at positions adjacent to the pair of left and right seats. The pressure receiving wall portion has a function of receiving an impact applied via the seat frame when the side portion is deformed.

  The reinforcing member is provided with at least one connecting wall portion for connecting the pair of pressure receiving wall portions so as to extend further in the vehicle width direction. And the accommodating part for accommodating the to-be-contained object which needs the protection with respect to an impact is formed in the inner part enclosed by the pressure receiving wall part and the connection wall part.

  According to this patent document 1, the reinforcing member fixed on the floor surface of the passenger compartment constitutes a rigid body together with the skeleton for the seat, and suppresses deformation of the side portion of the vehicle into the passenger compartment. Accordingly, it is possible to reduce the amount of deformation of the passenger compartment at the time of a side collision of the vehicle. In addition, by accommodating electronic parts such as a control unit of an airbag device as an object to be accommodated in the accommodating part, an electronic part that is weak against impact and needs to be protected against impact can be applied to the impact at the time of a side collision of the vehicle. It will be possible to effectively protect from.

JP 2006-131041 A

  However, in the above vehicle impact resistant structure, the reinforcing member is disposed in the center console, and there is a problem that the space in the center console cannot be effectively used. In addition, since a dedicated reinforcing member is provided, there is a problem that the manufacturing cost increases.

  The present invention solves this type of problem, and it is not necessary to provide a dedicated reinforcing member in the center console, and the electric motor capable of reliably saving space and reducing costs in the center console. The object is to provide a vehicle.

  The present invention relates to an electric vehicle that includes a motor driven by electricity and travels by a rotating operation of the motor. This electric vehicle includes a center console that is formed at the center of the vehicle cabin and extends in the front-rear direction between the left and right seats. In the center console, an inverter device, a battery, a relay device, a battery management device, and an impact resistant member are arranged. The inverter device controls the rotational drive of the motor, the battery stores electric power for rotationally driving the motor, and the relay device can cut off the current between the motor and the battery. The device manages the battery.

  The impact resistant member has a function of protecting at least the relay device and the battery management device from the external load when the external load acts on the center console. A relay device is fixed to one end portion of the impact resistant member in the vehicle longitudinal direction, and a battery management device is secured to the other end portion of the impact resistant member in the vehicle longitudinal direction.

  Further, in this electric vehicle, the impact resistant member is a plate member having both flat and flat surfaces, and the relay device is fixed to one surface of the plate member and the other of the plate member A battery management device is preferably fixed to the surface.

  Further, in this electric vehicle, the impact resistant member preferably has a corrugated structure that is curved or bent in the thickness direction.

  Furthermore, in this electric vehicle, it is preferable that the inverter device, the relay device, the battery management device, and the battery are arranged in this order from the front side in the vehicle front-rear direction to the rear side in the center console.

  According to the present invention, an impact resistant member is disposed in the center console, and a relay device and a battery management device are fixed to the impact resistant member. For this reason, it is not necessary to provide a dedicated reinforcing member in the center console, and space saving and cost reduction in the center console can be reliably performed.

It is a plane explanatory view of the electric vehicle concerning the embodiment of the present invention. It is a schematic perspective explanatory drawing in the center console which comprises the said electric vehicle. It is a schematic perspective view of the equipment accommodated in the center console. It is circuit explanatory drawing of the said apparatuses. It is a disassembled perspective explanatory drawing of an impact-resistant member, a junction board, and battery ECU.

  As shown in FIG. 1, an electric vehicle (for example, a hybrid vehicle or EV) 10 according to an embodiment of the present invention includes a motor 12 that is driven by electricity, and is driven by the rotation operation of the motor 12. The motor 12 is disposed in the front room (engine room) 14 of the electric vehicle 10 and applies a rotational force to at least one of the front wheel 16F or the rear wheel 16R.

  A center console 22 is formed in the center of the vehicle cabin 18 constituting the electric vehicle 10 so as to extend in the front-rear direction (arrow A direction) between the left and right front seats 20R, 20L.

  As shown in FIGS. 1 to 3, in the center console 22, an inverter unit (PCU) 24, a junction board 28 including a relay device 26, an impact resistant member 30, a battery ECU (battery management device) 32, and a battery module 34. Is placed.

  The inverter device 24 controls the rotational drive of the motor 12, the relay device 26 can cut off the current between the motor 12 and the battery module 34, and the battery ECU 32 manages the battery module 34.

  The battery module 34 stores electric power for rotationally driving the motor 12, and is configured by arranging a plurality of storage battery groups 36M in which a plurality of storage batteries (battery cells) 36 are stacked, for example, four sets. The

  As shown in FIG. 4, in the battery module 34, intermediate portions of the four sets of storage battery groups 36 </ b> M can be connected in series via the service plug 40. Each of the two storage battery groups 36M is electrically connected in series.

  A wiring 44 a connected to the positive electrode (+ polarity) of the battery module 34 and a wiring 44 b connected to the negative electrode (−polarity) of the battery module 34 are connected to the inverter device 24 via the relay device 26. The The main fuse 42 is connected to the wiring 44b and mounted on the junction board 28.

  The relay device 26 includes main contactors 46a and 46b, a precharge contactor 48, and a precharge resistor 50 connected in parallel to each other. The main contactors 46a and 46b and the precharge contactor 48 can be opened and closed by the battery ECU 32, respectively.

  A DC-DC converter 62 for converting the output voltage of the battery module 34 is connected to the wirings 44a and 44b. Although not shown, the DC-DC converter 62 is connected to a 12V power source. The wirings 44 a and 44 b are connected to the inverter device 24, and the inverter device 24 is connected to the motor 12 via a three-phase cable 66.

  As shown in FIG. 2, a lower plate 70 a, an upper plate 70 b, and side plates 70 c and 70 d that constitute the casing 68 are disposed in the center console 22. As shown in FIG. 1, an arrangement space 72 is formed inside the casing 68. In the arrangement space 72, the inverter device 24, the relay device 26, the battery ECU 32, and the battery module 34 are arranged in this order from the front side to the rear side in the vehicle front-rear direction (arrow A direction) (arrow Ar direction). A fan 74 is disposed in the front part of the inverter device 24.

  As shown in FIG. 5, the impact resistant member 30 is a plate member in which both the front and back surfaces 30 a and 30 b have a flat plate shape. The impact resistant member 30 is formed long in the vertical direction (arrow C direction), and an upper bent portion 30u and a lower bent portion 30d are formed at the upper end and the lower end.

  Two screw portions 76a and 76b are disposed in the upper bent portion 30u and the lower bent portion 30d, respectively. The lower screw portions 76b are inserted into the lower plate 70a and tightened with nuts, while the upper screw portions 76a are inserted into the upper plate 70b and screwed into the nuts 77 (see FIG. 2).

  As shown in FIG. 5, the surfaces 30 a and 30 b of the impact resistant member 30 have a corrugated structure that bends or curves in a wave shape along the thickness direction in a side view. Holes 78 are formed in the vertical corners of the impact resistant member 30 at the upper and lower corners thereof, and bolts 79 are disposed in the vertical upper and lower central portions of the impact resistant member 30. Bolts 80 are arranged at each corner of the junction board 28. The bolt 80 is inserted into each hole 78 of the impact resistant member 30 and screwed into each nut 82, whereby the junction board 28 is fixed to the surface 30 a of the impact resistant member 30.

  A hole 84 is formed in the upper and lower central portion of the battery ECU 32. The bolts 79 of the impact resistant member 30 are inserted into the holes 84 and the bolts 79 are screwed into the nuts 86. A battery ECU 32 is fixed to the surface 30 b of the impact resistant member 30.

  A relay device 26 is fixed to one end portion of the impact resistant member 30 in the vehicle longitudinal direction via a junction board 28, while a battery ECU 32 is disposed at the other end portion of the impact resistant member 30 in the vehicle longitudinal direction. Is fixed. When the impact resistant member 30 is fixed to the center console 22 and an external load is applied from the vehicle width direction (see the arrow B direction in FIG. 1), at least the relay device 26 and the battery ECU 32 are protected from the external load. It has the function to do.

  The operation of the electric vehicle 10 configured as described above will be described below.

  As shown in FIG. 4, when the service plug 40 is closed, power can be supplied from the battery module 34. The battery ECU 32 first turns on (closes) the precharge contactor 48 and the main contactor 46b. Therefore, the inverter device 24 is supplied with power whose current is limited by the precharge resistor 50.

  Subsequently, the precharge contactor 48 is turned off (closed), and the main contactor 46a is turned on (closed). As a result, the output voltage converted by the DC-DC converter 62 is supplied to the inverter device 24, and rotation by the motor 12 is performed. Therefore, the electric vehicle 10 can run by the rotational drive of the motor 12.

  In this case, in this embodiment, as shown in FIGS. 1 to 3, an impact resistant member 30 is disposed in the center console 22, and the impact resistant member 30 includes a relay device 26 and a battery ECU 32. It is fixed.

  The impact resistant member 30 has a pair of screw portions 76 a screwed to the upper plate 70 b and a pair of screw portions 76 b screwed to the lower plate 70 a, and is firmly fixed in the center console 22. For this reason, it is not necessary to provide a dedicated reinforcing member in the center console 22, and space saving and cost reduction in the center console 22 can be reliably performed.

  Moreover, as shown in FIG. 5, a junction board 28 including the relay device 26 is fixed to the surface 30a of the impact resistant member 30, while a battery ECU 32 is fixed to the surface 30b of the impact resistant member 30. Yes. Therefore, when an external load acts on the center console 22, at least the relay device 26 and the battery ECU 32 can be reliably protected from the external load.

  Further, the impact-resistant member 30 is composed of a plate member having both front and back surfaces 30a and 30b having a flat plate shape, the relay device 26 is fixed to one surface 30a, and the battery ECU 32 is fixed to the other surface 30b. ing. Thereby, the space occupied by the impact-resistant member 30 can be reduced as much as possible, and there is an advantage that the arrangement space 72 in the center console 22 can be used well.

  Moreover, the impact resistant member 30 employs a corrugated plate structure that is curved or bent in the thickness direction. For this reason, the impact-resistant member 30 can be made as thin as possible, and weight reduction and size reduction are easily performed.

  Furthermore, in the center console 22, an inverter device 24, a relay device 26, a battery ECU 32, and a battery module 34 are arranged in this order from the front side to the rear side in the vehicle front-rear direction. Therefore, the equipment is arranged along the flow of current from the battery module 34 to the inverter device 24, and unnecessary wiring is prevented, and further space saving and cost reduction are achieved.

  In this embodiment, the inverter device 24, the relay device 26, the battery ECU 32, and the battery module 34 are arranged in this order toward the rear of the vehicle. However, the configuration may be reversed. That is, the battery module 34, the battery ECU 32, the relay device 26, and the inverter device 24 can be arranged in this order toward the rear of the vehicle.

DESCRIPTION OF SYMBOLS 10 ... Electric vehicle 12 ... Motor 18 ... Vehicle cabin 20L, 20R ... Front seat 22 ... Center console 24 ... Inverter device 26 ... Relay device 28 ... Junction board 30 ... Impact-resistant member 30a, 30b ... Surface 32 ... Battery ECU 34 ... Battery Module 36M ... Storage battery group 68 ... Casing 72 ... Space for arrangement 74 ... Fan

Claims (4)

An electric vehicle including a motor driven by electricity and traveling by a rotating operation of the motor,
A center console formed at the center of the vehicle cabin and extending in the front-rear direction between the left and right seats,
In the center console,
An inverter device for controlling the rotational drive of the motor;
A battery for storing electric power for rotationally driving the motor;
A relay device capable of interrupting a current between the motor and the battery;
A battery management device for managing the battery;
An impact resistant member that protects at least the relay device and the battery management device from the external load when an external load acts on the center console;
Is placed,
While the relay device is fixed to one end of the impact resistant member in the vehicle longitudinal direction,
The electric vehicle, wherein the battery management device is fixed to the other end portion of the impact-resistant member in the vehicle front-rear direction. The electric vehicle according to claim 1, wherein the impact resistant member is a plate member having both flat and flat surfaces.
The relay device is fixed to one surface of the plate member,
The electric vehicle, wherein the battery management device is fixed to the other surface of the plate member.   The electric vehicle according to claim 2, wherein the impact-resistant member has a corrugated structure that is curved or bent in a plate thickness direction.   The electric vehicle according to any one of claims 1 to 3, wherein in the center console, the inverter device, the relay device, the battery management device, and the like from the front side to the rear side in the vehicle front-rear direction. An electric vehicle characterized by being arranged in the order of the batteries.

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