Electric vehicle

Abstract

To provide an electric vehicle which can realize, while securing capacity of a battery, a proportion like a sports car.SOLUTION: An electric vehicle 100 drives a drive wheel through electricity accumulated in a battery 14. The battery 14 of the electric vehicle 100 is given with a plurality of battery cells including: an intermediate part 15 which is arranged between a driver seat 12 and a front passenger seat over the front-back direction of a cabin; a front part 16 which is arranged ahead of the intermediate part 15 and includes a plurality of battery cells laid down thereon; and a rear part 17 which is arranged behind the intermediate part 15 and behind the driver seat 12 and the front passenger seat where height of a plurality of battery cells stacked thereon is higher than that of the intermediate part 15. An electric apparatus of the electric vehicle 100 activated by the electricity accumulated in the battery 14 is arranged above the front part 16. A top edge of the rear part 17 is higher than the position of the electric apparatus in the electric vehicle 100.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to electric vehicles. [Background technology]

[0002] Patent Document 1 discloses an electric vehicle in which a battery is disposed between the driver's seat and the passenger seat. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-520139 Summary of the Invention [Problem to be solved by the invention]

[0004] There is demand for sports car-type electric vehicles. To achieve sports car-like proportions in electric vehicles, there is room for improvement in the layout of parts, including the battery. [Means for solving the problem]

[0005] An electric vehicle that solves the above problems drives drive wheels using electricity stored in a battery. In the electric vehicle, the battery has a middle section, a front section, and a rear section. The middle section houses multiple battery cells and is arranged across the front and rear of the cabin between the driver's seat and the passenger seat. The front section is arranged in front of the middle section and has the multiple battery cells laid out. The rear section is arranged behind the middle section and behind the driver's seat and the passenger seat and has the multiple battery cells stacked higher than the middle section. In the electric vehicle, electrical equipment that operates using electricity stored in the battery is arranged above the front section. In the electric vehicle, the upper end of the rear section is located higher than the electrical equipment. [Effects of the Invention]

[0006] This electric vehicle achieves sports car-like proportions while maintaining battery capacity. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a schematic diagram showing the arrangement of a battery and its peripheral components when viewed from above an electric vehicle according to an embodiment. [Figure 2] FIG. 2 is a schematic diagram showing the arrangement of the battery and its peripheral components when the electric vehicle according to the embodiment is viewed from the side. [Figure 3] FIG. 3 is a schematic diagram showing the arrangement of brake discs and brake calipers provided in the electric vehicle of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] An embodiment of an electric vehicle will be described below with reference to FIGS. 1 to 3, directions are indicated by arrows. In FIGS. 1 to 3, Fr indicates the forward direction of the electric vehicle 100. In FIGS. 1 to 3, Rr indicates the rearward direction of the electric vehicle 100. In FIG. 1, Rh indicates the right side as seen by a passenger facing forward of the electric vehicle 100. In FIG. 1, Lh indicates the left side as seen by a passenger facing forward of the electric vehicle 100.

[0009] <Arrangement of the battery 14 and the power supply device 18 in the electric vehicle 100> Fig. 1 shows the arrangement of the battery 14 and its peripheral components when the electric vehicle 100 is viewed from above. Fig. 2 shows the arrangement of the battery 14 and its peripheral components when the electric vehicle 100 is viewed from the direction Lh in Fig. 1. The arrangement of the components provided in the electric vehicle 100 will be described below with reference to Figs. 1 and 2.

[0010] 1, the electric vehicle 100 includes a battery 14. The battery 14 contains a plurality of battery cells. The battery 14 stores electricity in the battery cells.

[0011] The battery 14 includes a middle section 15 , a front section 16 , and a rear section 17 . 1 and 2, the intermediate section 15 is disposed across the front and rear of the cabin between the driver's seat 12 and the passenger seat 13. The intermediate section 15 houses a plurality of battery cells.

[0012] 1, the front section 16 is disposed in front of the intermediate section 15. A plurality of battery cells are arranged in the front section 16. As shown in Fig. 1, the rear section 17 is disposed behind the intermediate section 15 and behind the driver's seat 12 and the passenger seat 13. As shown in Fig. 2, the upper end of the rear section 17 is located higher than the upper end of the intermediate section 15. In the rear section 17, a plurality of battery cells are stacked higher than the intermediate section 15.

[0013] In this way, in the electric vehicle 100, multiple battery cells are distributed and arranged in an intermediate section 15 between the driver's seat 12 and the passenger seat 13, a front section 16 in front of the driver's seat 12 and the passenger seat 13, and a rear section 17 behind the driver's seat 12 and the passenger seat 13.

[0014] The electric vehicle 100 is equipped with electric devices. The electric devices are devices that operate using electricity stored in the battery 14. In the electric vehicle 100, the electrical equipment is a power supply device 18. A plurality of devices are connected to the power supply device 18. For example, lights provided in the electric vehicle 100, a monitor for car navigation, and various electronic control devices provided in the electric vehicle 100 are connected to the power supply device 18. The power supply device 18 distributes and supplies power from the battery 14 to each connected device. At this time, the power supply device 18 may convert the power in the battery 14 before supplying the power to each device. The power supply device 18 may also have a function of charging the battery 14 with external power.

[0015] 1 and 2, the power supply device 18 is disposed above the front section 16. Also, as shown in Fig. 2, the upper end of the rear section 17 is located higher than the power supply device 18. In other words, the rear section 17 is higher than the front section 16, and multiple battery cells are stacked on top of each other.

[0016] The rear portion 17 has a larger number of battery cells than the front portion 16. The battery 14 is heavier as the number of battery cells contained therein increases. Therefore, the rear portion 17 is heavier than the front portion 16.

[0017] In this way, the electric vehicle 100 has multiple battery cells stacked high behind the driver's seat 12 and passenger seat 13. On the other hand, by arranging the power supply device 18, which is an electrical device, in the space above the front part 16, the vehicle height of the electric vehicle 100 in front of the driver's seat 12 and passenger seat 13 is lowered.

[0018] 2, the electric vehicle 100 has a connector 19 between the front part 16 and the power supply device 18. The connector 19 connects, for example, the battery 14 and the power supply device 18, and relays the power supplied from the battery 14 to the power supply device 18.

[0019] <Relationship of Wheels, Battery 14, and Power Supply Device 18 of Electric Vehicle 100> 1 shows a front wheel rotation shaft 24 and a rear wheel rotation shaft 25 as rotation shafts of wheels equipped on the electric vehicle 100. The front wheel rotation shaft 24 is the rotation shaft of the front wheels 10. The rear wheel rotation shaft 25 is the rotation shaft of the rear wheels 11.

[0020] 1, the front portion 16 is disposed rearward of the front wheel rotation shaft 24. Also, as shown in FIG. 1, the rear portion 17 is disposed forward of the rear wheel rotation shaft 25. In this manner, the battery 14 is disposed so as to be housed between the front wheel rotation shaft 24 and the rear wheel rotation shaft 25 of the electric vehicle 100.

[0021] <Arrangement of the drive unit 20 provided in the electric vehicle 100> 1 and 2, the electric vehicle 100 is provided with a drive unit 20 behind the rear section 17. The drive unit 20 is made up of a motor and a reducer.

[0022] In the drive unit 20, the motor outputs rotation using power supplied from the battery 14. In the drive unit 20, the reducer is connected to the drive shaft 26. In the drive unit 20, the reducer reduces the rotation output by the motor and transmits the reduced rotation to the drive shaft 26. In this way, the rotation of the motor is transmitted to the drive shaft 26, causing the rear wheels 11 connected to the drive shaft 26 to rotate. In other words, in the electric vehicle 100, the rear wheels 11 are drive wheels.

[0023] In this way, the drive unit 20 uses the power supplied from the battery 14 to rotate the drive wheels. <Arrangement of the brake caliper 23 provided in the electric vehicle 100> Fig. 3 shows the arrangement of brake discs and brake calipers 23 when the electric vehicle 100 is viewed from the direction Lh in Fig. 1. As shown in Fig. 3, brake calipers 23 are provided on the front wheels 10 and the rear wheels 11.

[0024] In Fig. 3, the dashed dotted line shown on the front wheel 10 indicates the position of the center of the front wheel 10 in the vehicle longitudinal direction when the electric vehicle 100 is viewed from the direction Lh in Fig. 1. As shown in Fig. 3, the brake caliper 23 is disposed rearward of the dashed dotted line shown on the front wheel 10. In other words, the brake caliper 23 installed on the front wheel 10 is disposed on the vehicle rear side of the front brake disc 21.

[0025] In Fig. 3, the dashed dotted line shown on the rear wheel 11 indicates the position of the center of the rear wheel 11 in the vehicle front-rear direction when the electric vehicle 100 is viewed from the direction Lh in Fig. 1. As shown in Fig. 3, the brake caliper 23 is disposed forward of the dashed dotted line shown on the rear wheel 11. In other words, the brake caliper 23 installed on the rear wheel 11 is disposed on the vehicle front side of the rear brake disc 22.

[0026] <Operation of this embodiment> In the electric vehicle 100 described above, a plurality of battery cells are distributed and arranged in an intermediate section 15 between the driver's seat 12 and the passenger seat 13, a front section 16 in front of the driver's seat 12 and the passenger seat 13, and a rear section 17 behind the driver's seat 12 and the passenger seat 13. This allows the seating position to be lower than when the battery 14 is mounted under the floor of the driver's seat 12 and the passenger seat 13. Furthermore, in the electric vehicle 100, a plurality of battery cells are stacked high behind the driver's seat 12 and the passenger seat 13, while electrical equipment is arranged in the space above the front section 16. This allows the electric vehicle 100 to lower the vehicle height in front of the driver's seat 12 and the passenger seat 13 while ensuring the capacity of the battery 14.

[0027] <Effects of this embodiment> (1) The electric vehicle 100 described above can achieve sports car-like proportions while ensuring the capacity of the battery 14 by devising a layout of the battery cells and electrical devices.

[0028] (2) In the electric vehicle 100, the electrical device is the power supply device 18. The power supply device 18 distributes and supplies power from the battery 14 to each of the connected devices. (3) The electric vehicle 100 is provided with brake calipers 23 on the front wheels 10 and the rear wheels 11. The brake caliper 23 on the front wheels 10 is disposed on the rear side of the vehicle relative to the front brake disc 21. The brake caliper 23 on the rear wheels 11 is disposed on the front side of the vehicle relative to the rear brake disc 22.

[0029] If the brake caliper 23 is located outside the gap between the rotational axes of the front wheels 10 and rear wheels 11 of the electric vehicle 100, the brake caliper 23 will be away from the center of gravity of the electric vehicle 100. Responsiveness during cornering is improved when components are mounted closer to the center of gravity and the mass is concentrated closer to the center of gravity than when components are mounted farther from the center of gravity and the mass is dispersed farther from the center of gravity. In the electric vehicle 100 described above, the brake caliper 23 is located between the rotational axes of the front wheels 10 and rear wheels 11, bringing the brake caliper 23 closer to the center of gravity of the electric vehicle 100. This allows the electric vehicle 100 to improve its responsiveness during cornering.

[0030] (4) In the electric vehicle 100, the front portion 16 is disposed rearward of the rotation axis of the front wheels 10. In addition, in the electric vehicle 100, the rear portion 17 is disposed forward of the rotation axis of the rear wheels 11.

[0031] In the electric vehicle 100, the battery 14 is a heavy object. If the heavy object is concentrated between the rotational axis of the front wheels 10 and the rotational axis of the rear wheels 11, the driving performance of the electric vehicle 100 is improved. In the electric vehicle 100, the battery 14 is disposed between the rotational axis of the front wheels 10 and the rotational axis of the rear wheels 11. This allows the driving performance of the electric vehicle 100 to be improved.

[0032] (5) The rear wheels 11 are drive wheels in the electric vehicle 100. In the electric vehicle 100, the rear portion 17 includes a larger number of battery cells than the front portion 16 includes.

[0033] In the electric vehicle 100, the battery 14 is heavy, and the more battery cells it contains, the heavier it becomes. In an electric vehicle 100 driven by rear wheels 11, the heavier the rear weight, the more likely it is that traction will be applied to the rear wheels 11, which are the drive wheels, during acceleration. The electric vehicle 100 described above is configured so that the rear wheels 11 are driven, and the rear portion 17 of the battery 14 is heavier than the front portion 16. This allows the electric vehicle 100 to achieve high acceleration performance.

[0034] <Example of change> This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility.

[0035] As shown in Fig. 1, the electric vehicle 100 has the driver's seat 12 located on the Lh side of Fig. 1 and the passenger seat 13 located on the Rh side of Fig. 1. The positions of the driver's seat 12 and the passenger seat 13 may be reversed. In the electric vehicle 100 described above, the electrical equipment is the power supply device 18. In the electric vehicle 100, the electrical equipment located above the front part 16 is not limited to the power supply device 18.

[0036] In the electric vehicle 100 described above, the rear wheels 11 are drive wheels. The electric vehicle 100 may be a four-wheel drive vehicle in which the front wheels 10 are also driven in addition to the rear wheels 11. As shown in FIG. 2 , in the electric vehicle 100 described above, the upper end of the front section 16 is located lower than the upper end of the intermediate section 15. The configuration of the front section 16 provided in the electric vehicle 100 is not limited to the above embodiment. For example, the upper end of the front section 16 may be located at the same height as the upper end of the intermediate section 15. Furthermore, for example, the upper end of the front section 16 may be located higher than the upper end of the intermediate section 15.

[0037] <Additional Notes> The technical ideas that can be understood from the above-described embodiment and modified examples will be described. [Appendix 1] An electric vehicle in which the drive wheels are driven by electricity stored in a battery, the battery comprising: a middle section in which a plurality of battery cells are housed and which is arranged across the front and rear of the cabin between the driver's seat and the passenger seat; a front section in front of the middle section in which the plurality of battery cells are laid out; and a rear section behind the middle section and behind the driver's seat and the passenger seat in which the plurality of battery cells are stacked higher than the middle section; and an electric vehicle in which electrical equipment operated by the electricity stored in the battery is located above the front section, and the upper end of the rear section is positioned higher than the electrical equipment.

[0038] [Appendix 2] The electric vehicle according to [Appendix 1], wherein the electrical equipment is a power supply device, and the power supply device distributes and supplies power from the battery to each connected device. [Appendix 3] An electric vehicle as described in [Appendix 1] or [Appendix 2], wherein brake calipers are provided on the front wheels and the rear wheels, the brake calipers provided on the front wheels being positioned on the rear side of the vehicle on the front brake disc, and the brake calipers provided on the rear wheels being positioned on the front side of the vehicle on the rear brake disc.

[0039] [Appendix 4] An electric vehicle described in any one of [Appendix 1] to [Appendix 3], wherein the front portion is located rearward of the rotation axis of the front wheels, and the rear portion is located forward of the rotation axis of the rear wheels.

[0040] [Appendix 5] An electric vehicle described in any one of [Appendix 1] to [Appendix 4], wherein the rear wheels are the drive wheels, and the number of the plurality of battery cells provided in the rear portion is greater than the number of the plurality of battery cells provided in the front portion. [Explanation of symbols]

[0041] 10...Front wheel 11...Rear wheel 12...Driver's seat 13…Passenger seat 14...Battery 15...Middle section 16...Front section 17...Rear section 18…Power supply device 19...Connector 20...Driver 21...Front brake disc 22...Rear brake disc 23...Brake caliper 24...Front wheel rotation axis 25...Rear wheel rotation axis 26...Drive shaft 100...electric vehicle

Claims

1. It is an electric vehicle whose drive wheels are driven by electricity stored in a battery. The battery an intermediate section that houses a plurality of battery cells and is disposed across the front and rear of the cabin between the driver's seat and the passenger seat; a front portion disposed in front of the intermediate portion and including the plurality of battery cells; a rear portion disposed behind the intermediate portion and behind the driver's seat and the passenger seat, the rear portion being higher than the intermediate portion and in which the plurality of battery cells are stacked; the electric device operated by the electricity stored in the battery is disposed above the front portion, The upper end of the rear section is located higher than the electrical equipment. Electric car.

2. The electrical device is a power supply device, The power supply device is The power from the battery is distributed and supplied to each connected device. The electric vehicle of claim 1 .

3. Brake calipers are installed on the front and rear wheels. The brake caliper installed on the front wheel is disposed on the rear side of the vehicle on the front brake disc, The brake caliper installed on the rear wheel is disposed on the front side of the vehicle on the rear brake disc. The electric vehicle of claim 1 .

4. The front portion is disposed rearward of the rotation axis of the front wheel, The rear portion is disposed forward of the rotation axis of the rear wheel. The electric vehicle of claim 1 .

5. the rear wheels are the drive wheels, The rear portion includes a larger number of the battery cells than the front portion includes a larger number of the battery cells. The electric vehicle of claim 1 .

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