DE102020128051A1 - Flat-Bottom Plug-in Hybrid Vehicle (PHEV) - Google Patents

Abstract

The present invention relates to a flat-bottom plug-in hybrid vehicle (PHEV) (10) with a transverse engine (11), the vehicle (10) having at least one row of seats (12a, 12b), the vehicle (10) having a Floor level (13) which is designed as a high floor, the vehicle (10) comprising at least one underfloor battery (14) which is arranged below the floor level (13), the vehicle (10) having at least one foot garage (15a, 15b) includes.

Description

The present invention relates to a flat-bottom plug-in hybrid vehicle (PHEV) with a transverse engine, the vehicle having at least one row of seats.

Plug-in hybrid (PHEV) vehicles with a trunk high-voltage (HV) battery or an underfloor HV battery are known in the prior art, these being arranged under a second row of seats in the motor vehicle in the prior art.

For example, from the document DE 10 2010 011 578 A1 a PHEV vehicle provided with a transverse motor and a battery is known. A tank is located under a second row of seats, a rear seat, of the vehicle.

From the document JP 2004 009 863 A there is known a PHEV vehicle provided with a transverse motor and a battery. A high-voltage battery is located under a first row of front seats of the vehicle.

From the document CN 102 938 450 A a PHEV vehicle with a large underfloor battery and a foot garage in the vehicle is known. A high-voltage battery is located under a first row of front seats of the vehicle.

The PHEV vehicles known in the prior art have a low energy content. The installation of larger high-voltage batteries requires a completely raised floor of a vehicle in the underfloor, which means that installation of larger high-voltage batteries is currently only possible for tall vehicles.

The object of the present invention is to provide a vehicle that allows larger high-voltage batteries to be installed in a flat-bottomed plug-in hybrid vehicle.

This object is achieved by a flat-bottom plug-in hybrid vehicle (PHEV) having the features of claim 1. Advantageous developments and designs are described in the dependent claims, the description and the description of the figures.

The present invention relates to a flat-bottom plug-in hybrid vehicle (PHEV) with a transverse engine, the vehicle having at least one row of seats. Typically, the flat-bottom plug-in hybrid vehicle (PHEV) includes at least two rows of seats, with a first row of seats being a front row of seats and a second row of seats being a rear row of seats. The first row of seats includes individual seats as an option.

According to the invention, the PHEV has a floor level which is designed as a high floor, the PHEV comprising at least one underfloor battery which is arranged below the floor level. The floor level is dimensioned in such a way that at least one high-voltage battery can be arranged below the floor level, with the vehicle comprising at least one foot garage.

The raised floor is generally flat, with the raised floor generally being between 15 cm and 35 cm, in particular between 20 cm and 30 cm, above a roadway.

A foot garage is a recess in the floor level, which is set up to accommodate at least one leg or foot of a vehicle occupant. The configuration of a PHEV with a foot garage enables the vehicle floor to be configured flat or even overall, with high energy content and a maximum trunk volume still being achievable.

As a rule, the vehicle comprises at least a first foot garage and a second foot garage. The first foot garage and the second foot garage are arranged next to one another in the direction of travel or in the longitudinal direction of the vehicle. Optionally, the first foot garage and the second foot garage are arranged or formed at a distance from one another.

A respective foot garage is usually rectangular. In an alternative embodiment, the at least one foot garage is round or oval.

The flat-bottomed plug-in hybrid vehicle (PHEV) offers the advantage that an arrangement of components can be provided that enables high energy storage in a flat vehicle configuration.

In one development of the invention, the at least one underfloor battery is a high-voltage battery. By configuring an underfloor battery as a high-voltage battery, high energy contents can be provided on the one hand. On the other hand, the position below the floor level means that a large high-voltage battery can be installed in the vehicle.

Optionally, the underfloor battery is arranged transversely to a vehicle longitudinal axis below the floor level. The underfloor battery is typically arranged on one side of the vehicle, in particular the driver's side of the vehicle. This offers the advantage that further components, in particular a connection box and an exhaust system, can be placed in the longitudinal direction of the vehicle in addition to the underfloor battery.

In a further development, the at least one high-voltage battery is arranged under a first row of the at least one row of seats. As a rule, the high-voltage battery is therefore arranged under a first row of at least two rows of seats. This offers the advantage that the at least one high-voltage battery is arranged in the vehicle in such a way that a foot garage can be formed in the vehicle, which is formed below the floor level, starting from the floor level, since there is a space between the rows of seats for the foot garage is required is not occupied by the high-voltage battery.

By placing the at least one high-voltage battery under the first row of seats, an unused area of the floor level is made available for the high-voltage battery. As a rule, the high-voltage battery is arranged under the first row of seats on the driver's side or on the passenger side of the vehicle.

In a further development, the vehicle comprises at least one tank, the at least one tank being arranged in the longitudinal direction of the vehicle behind at least one of the at least one foot garage. The at least one tank is preferably arranged under a second row of seats of the at least one row of seats of the vehicle. This offers the advantage that a second unused area of the vehicle, below the second row of seats, can be made available for the tank. By arranging the tank below the second row of seats, a tank with a large volume can be provided.

Optionally, the tank is designed transversely to the longitudinal direction of the vehicle. The tank is usually delimited in the longitudinal direction of the vehicle towards the front of the vehicle by at least one foot garage. The tank is thus located below floor level.

In one configuration, the at least one foot garage is arranged or formed between the at least one underfloor battery and the at least one tank. This offers the advantage that the at least one foot garage is embossed into the floor level where the vehicle occupant places his feet. As a result, the vehicle occupants are not restricted in their seating position despite the high floor level.

The first foot garage and/or the second foot garage are generally stamped or embedded in the floor level. As a rule, the vehicle has at least one high-voltage line between the first foot garage and the second foot garage. The at least one high-voltage line connects an e-machine of a first electric drive train and an e-machine of a second electric drive train via power electronics to the high-voltage battery via a connection box. An electric drive train includes at least one electric machine with at least one power electronics unit and at least one transmission.

In a further development, the vehicle comprises at least one exhaust system which is arranged between a sill of the vehicle and at least one of the at least one foot garage. Optionally, the exhaust system is an IHU component. For example, the at least one IHU component is an exhaust system guide (AGA guide). In one embodiment, the exhaust duct of the exhaust system extends from the transverse engine to a muffler that is arranged under a first row of seats between a sill that is arranged along a passenger side and the battery junction box (BJB) connection box. Starting from the muffler, the exhaust gas duct extends along the sill, which is arranged on the passenger side, between the sill and a foot garage, which is formed on the passenger side in the area of a second row of seats of the vehicle. The exhaust duct extends further via at least one muffler, which is formed in the area of the rear axle of the vehicle, to an exhaust pipe.

In a further refinement, the exhaust duct of the exhaust system extends from the transverse engine to a muffler which is arranged under a first row of seats between a rocker which is arranged along a driver's side and the BJB junction box. Starting from the muffler, the exhaust gas duct extends along the sill, which is arranged on the driver's side, between the sill and a foot garage, which is formed on the driver's side in the area of a second row of seats of the vehicle. The exhaust duct extends further via at least one muffler, which is formed in the area of the rear axle of the vehicle, to an exhaust pipe.

In a further development, the vehicle comprises at least one muffler, at least one of the at least one muffler being arranged under the first row of the at least one row of seats of the vehicle.

In a further development, the vehicle includes at least one charger, with at least one of the at least one charger under the first row of seats of at least one row of seats of the vehicle is arranged. Usually the charger is a low power charger.

In one development, the vehicle includes at least one battery box (BJB connection box), the BJB connection box being arranged in the vehicle between a first foot garage and a second foot garage. The BJB connection box is therefore preferably arranged in the center of the vehicle. This offers the advantage that the BJB connection box is arranged in the vehicle in a way that is easy to wire. The charging socket is usually connected directly to the BJB connection box via the charger. Typically, the BJB junction box is located between the underfloor battery and a sill.

In a further development, the floor level includes at least one high-voltage line, which is arranged running in the direction of a longitudinal axis of the vehicle centrally along the longitudinal axis of the vehicle. The at least one high-voltage line thus runs below the floor level in the middle between a first foot garage and a second foot garage.

The at least one high-voltage line is set up to electrically connect the at least one connection box to the first electric drive train and/or to the second electric drive train.

As a rule, the floor level has at least one central plateau that is set up to accommodate the at least one high-voltage line. The central plateau is formed centrally in the longitudinal direction of the vehicle, with the central plateau being formed between the first foot garage and the second foot garage.

By placing the high-voltage line in the centrally formed central plateau, the at least one high-voltage line is arranged in the center of the vehicle in such a way that the high-voltage line is at a small distance from a respective electric drive train or a charging socket.

As a rule, the vehicle has at least one charging socket, the charging socket being electrically connected to the connection box via at least one of the at least one high-voltage line.

• 1 zeigt eine Draufsicht auf einen schematischen Aufbau einer Ausführungsform eines Flachbodens eines erfindungsgemäßen Flachboden-P lug-in-Hybrid-Fahrzeugs,
• 2 zeigt einen Schnitt durch die Ausführungsform des - in 1 gezeigten - Flachbodens des Flachboden-Plug-in-Hybrid-Fahrzeugs.

The invention is illustrated schematically by means of embodiments in the drawing and is further described with reference to the drawing, in which the same components are identified with the same reference numbers. It shows:

• 1 shows a top view of a schematic structure of an embodiment of a flat floor of a flat floor plug-in hybrid vehicle according to the invention,
• 2 shows a section through the embodiment of - in 1 shown - flat bottom of the flat bottom plug-in hybrid vehicle.

1 shows a plan view of a schematic structure of an embodiment of a flat floor of a flat floor plug-in hybrid vehicle according to the invention.

1 shows the structure of a flat-bottomed plug-in hybrid vehicle 10 with four wheels 19, with two wheels 19 being connected to one another by an axle 20a, 20b, and two rocker panels 22, which delimit the vehicle 10 on the sides.

Between the four wheels 19 and the two sills 22 is a - formed corridor level - not shown. The floor level is a high floor level on which a vehicle user moves. That is, a floor level is a level on which a vehicle user places their feet.

Below the floor level, the vehicle 10 has a first electric drive train 23a on a first axle 20a and a transverse motor 11 configured as an internal combustion engine. In addition, an electric machine 33a (electric machine) is shown, which is arranged in the vehicle 10 parallel to the axis. The electric drive train 23a is driven via the electric machine 33a.

A second electric drive train 23b is arranged on a second axle 20b. Both the first axis 20a and the second axis 20b and thus the first electric drive train 23a and the transverse motor 11 are arranged below the floor level. In addition, a further electric machine 33b (electric machine) is shown, which is arranged in the vehicle 10 parallel to the axis. The electric drive train 23b is driven via the electric machine 33b. The vehicle 10 thus includes at least one, in particular two electric machines 33a, 33b, which are each set up to drive an electric drive train 23a, 23b.

Furthermore, an underfloor battery 14, which is designed as a high-voltage battery, is arranged below the floor level. In the present embodiment, the high-voltage battery 14 is only formed on one side of the vehicle.

In addition to the high-voltage battery 14 , the vehicle 10 has a connection box 24 which is designed to connect to the high-voltage battery 14 .

The connection box 24 is formed next to the high-voltage battery 14 and electrically connects the first electric drive train 23a on the first axle 20a and the second electric drive train 23b on the second axle 20b to one another. The connection box 24 is also connected to a liquid gas tank (Liquid Gas (LG)).

The vehicle 10 includes three mufflers 31 in the present embodiment, one of the mufflers being arranged under the first row of seats. Furthermore, the vehicle 10 includes a charger 32, which is also arranged under the first row of seats.

The vehicle 10 also has a tank 16 . In the present embodiment, the tank 16 is arranged below a second row of seats 12b.

The vehicle 10 also has two foot garages 15a, 15b. A respective foot garage 15a, 15b is arranged on each side of the vehicle. The two foot garages 15a, 15b are formed next to one another in the direction of a vehicle longitudinal axis L of the vehicle 10, with a first foot garage 15a being formed on a driver's side of the vehicle 10 and a second foot garage 15b being formed on a passenger side of the vehicle 10.

The first foot garage 15a and the second foot garage 15b are rectangular in the present embodiment, with each foot garage 15a, 15b having a greater length transversely to the vehicle longitudinal axis L than in the direction of the vehicle longitudinal axis L.

In the present embodiment, the first foot garage 15a and the second foot garage 15b are set up to accommodate at least two, in particular three, feet. Thus, a respective foot garage 15a, 15b is dimensioned such that a respective foot garage 15a, 15b accommodates at least two feet, in particular three feet.

Due to such dimensioning, the vehicle is set up to accommodate at least three people in the second row of seats 12b. The first foot garage 15a and the second foot garage 15b are spaced apart from one another such that a vehicle occupant sitting in the middle of the second row of seats can place one foot in the first foot garage 15a and can place a second foot in the second foot garage 15b.

The at least one underfloor battery 14 is formed at the height of a first row of seats 12a below floor level. Here, the high-voltage battery 14 is formed on a vehicle side in the present embodiment.

The vehicle 10 also includes a charging socket 25, which is formed in the area of one of the wheels 19, in particular a rear wheel, of the vehicle 10.

2 shows the - in 1 shown - section A through the flat bottom of the flat bottom plug-in hybrid vehicle 10.

Two sills 22 are shown, each delimiting the vehicle 10 on the sides. Starting from the sills 22 , the flat floor is formed along the floor level 13 .

The floor level 13, which is set up as a high floor, forms two side plateaus 27a, 27b adjoining the sills 22 in each case. In the area of the side plateaus 27a, 27b, below the floor level 13, a storage area is set up and formed.

In this case, 12V lines 26 are laid in a first side plateau 27a and at least one exhaust system or an exhaust system guide 17 is set up and formed in a second side plateau 27b.

The exhaust system or the exhaust system guide (AGA guide) 17 is set up from the internal combustion engine, which is formed in the front of the motor vehicle 10, to at least one - not shown - exhaust pipe, which is arranged in the rear of the motor vehicle 10 lead, wherein the AGA management is set up to conduct and discharge exhaust gases from the internal combustion engine below the floor level 13 to the at least one exhaust. The exhaust system 17 thus runs from the transverse engine 11, which is formed in the area of the front axle of the vehicle 10, via the silencer 31, which is formed between the sill 22 and the BJB connection box 24, further between the sill 22 and the second foot garage 15b in the direction of the rear axle of the vehicle 10. The exhaust system 17 splits in the area of the second, rear axle of the vehicle 10 into two exhaust ducts, each leading to a muffler 31, which is set up as a rear muffler.

Furthermore, the floor level 13 has a central plateau 21 which is set up to accommodate at least one high-voltage line 18 .

The center plateau 21 is configured to extend from a front of the vehicle 10 to a rear of the vehicle. The central plateau 21 has a width in the longitudinal direction of the vehicle is dimensioned such that the at least one high-voltage line 18 can be placed below the middle plateau 21 .

A foot garage 15a, 15b is formed between a respective side plateau 27a, 27b and the middle plateau 21 transversely to the longitudinal direction of the vehicle. A respective foot garage 15a, 15b is embedded in the floor level 13. A respective foot garage 15a, 15b is dimensioned such that at least two, but in particular three feet can be placed in a foot garage 15a, 15b.

In the present embodiment, each foot garage 15a, 15b has beveled or conically tapering side walls, with each foot garage 15a, 15b being angular in the present embodiment.

Each of the foot garages 15a, 15b is set up to accommodate at least one foot. In the present embodiment, the first foot garage 15a is configured to accommodate the feet of a vehicle occupant 28 seated on a driver's side of the motor vehicle 10 in the second row of seats.

The second foot garage 15b is set up to accommodate the feet of a vehicle occupant 30 seated on a passenger side of the motor vehicle 10 in the second row of seats.

Both the first foot garage 15a and the second foot garage 15b are also set up to accommodate one foot of a vehicle occupant 29 sitting in the middle of the second row of seats.

Reference List

10

Flat bottom plug-in hybrid vehicle

11

transverse engine

12a, 12

first row of seats, second row of seats

13

floor level

14

underfloor battery

15a, 15b

first foot garage, second foot garage

16

tank

17

exhaust system

18

high-voltage line

19

Wheels

20a, 20b

first axis, second axis

21

middle plateau

22

sills

23a, 23b

first electric powertrain, second electric powertrain

24

BJB junction box

25

charging socket

26

12V lines

27a, 27b

lateral plateaus

28

Room for feet of a first occupant

29

Room for feet of a second, center-seated occupant

30

Room for feet of a third occupant

31

silencer

32

charger

33a, 33b

electric machine

L

vehicle longitudinal axis

A

cut

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 102010011578 A1 [0003]
• JP 2004009863 A [0004]
• CN 102938450A [0005]

Claims (10)

Flat-bottom plug-in hybrid vehicle, PHEV, (10) with a transverse engine (11), the vehicle (10) having at least one row of seats (12a, 12b), characterized in that the vehicle (10) has a floor level ( 13) which is designed as a raised floor, the vehicle (10) comprising at least one underfloor battery (14) which is arranged below the floor level (13), the vehicle (10) comprising at least one foot garage (15a, 15b). Vehicle (10) after claim 1 , characterized in that the at least one underfloor battery (14) is a high-voltage battery. Vehicle (10) according to one of the preceding claims, characterized in that the at least one high-voltage battery is arranged under a first row of seats (12a) of the at least one row of seats (12a, 12b). Vehicle (10) according to one of the preceding claims, characterized in that the vehicle (10) comprises at least one tank (16), the at least one tank (16) being arranged in the longitudinal direction of the vehicle behind at least one of the at least one foot garage (15a, 15b). is. Vehicle (10) after claim 4 , characterized in that the at least one foot garage (15a, 15b) is arranged between the at least one underfloor battery (14) and the at least one tank (16). Vehicle (10) according to one of the preceding claims, characterized in that the vehicle (10) comprises at least one exhaust system (17) which is arranged between a sill of the vehicle and at least one of the at least one foot garage. Vehicle (10) according to one of the preceding claims, characterized in that the vehicle (10) comprises at least one silencer (31), at least one of the at least one silencer (31) being located below a first row of seats (12a) of the at least one row of seats (12a , 12b) of the vehicle (10) is arranged. Vehicle (10) according to one of the preceding claims, characterized in that the vehicle (10) comprises at least one charging device (32), with at least one of the at least one charging device (32) under a first row of seats (12a) of the at least one row of seats (12a , 12b) of the vehicle (10) is arranged. Vehicle (10) according to one of the preceding claims, characterized in that the vehicle (10) comprises at least one battery box, in particular a BJB connection box (24), the BJB connection box (24) in the vehicle (10) between a first Foot garage (15a) and a second foot garage (15b) is arranged. Vehicle (10) according to one of the preceding claims, characterized in that the floor level (13) comprises at least one high-voltage line (18) which is arranged running in the direction of a vehicle longitudinal axis centrally along the vehicle longitudinal axis.

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