An electric motor coach

Abstract

This utility model relates to the field of public buses, specifically to an electric bus. This electric bus addresses the problems of complex installation of battery and electrical components and limited luggage compartment space in existing electric buses. The electric bus includes a body, which includes a chassis. The chassis also houses a battery pack, an electric drive unit, and a multi-function controller integrating a motor controller. The luggage compartment is located on the chassis between the front and rear axles. The electric drive unit is located before the rear axle and is connected to the rear axle drive system. The battery pack and multi-function controller are both installed in the rear overhang section behind the rear axle. This design avoids the cumbersome installation problems caused by the dispersed arrangement of the battery pack and other components on the chassis, and provides a larger luggage compartment space between the front and rear axles, facilitating the rapid installation of the bus's components.

Description

Technical Field

[0001] This utility model relates to the field of public buses, specifically to an electric bus. Background Technology

[0002] With the energy crisis and the need for environmental protection, electric buses are being widely used in the transportation sector. Compared to gasoline-powered buses, electric buses eliminate the exhaust and fuel systems and add battery packs, controllers, motors, and other devices, thus ensuring reliable operation while meeting environmental protection requirements.

[0003] For example, Chinese utility model patent CN208530262U discloses a bus chassis. This chassis includes a chassis body, on which a drive system, an electrical system, and a battery are mounted. A storage compartment is located on the chassis body, corresponding to the position between the front and rear axles. The drive system (including a motor and motor shaft) is located behind and connected to the rear axle. The electrical system (including a controller and other high-voltage electrical components) is located behind the rear axle of the chassis body. However, because the drive system is located behind the rear axle, to ensure the axle load ratio between the front and rear axles of the bus chassis, the battery needs to be placed in a battery compartment between the front and rear axles. This battery compartment occupies space in the luggage compartment, reducing the usable space. Furthermore, the battery and the various components of the electrical system are installed in different positions on the bus chassis, making installation cumbersome, increasing the complexity of manufacturing and installation, and preventing the overall vehicle from being lightweight. Utility Model Content

[0004] The purpose of this utility model is to provide an electric bus to solve the problems of complex installation of various components of the battery and electrical system and small luggage compartment space in existing electric buses.

[0005] To solve the above-mentioned technical problems, the present invention provides an electric bus including a vehicle body, the vehicle body including a chassis, a battery pack, an electric drive device and an integrated controller with a motor controller installed on the chassis, a luggage compartment located on the chassis corresponding to the position between the front axle and the rear axle, the electric drive device located in front of the rear axle and connected to the rear axle drive, and the battery pack and the integrated controller both installed in the rear overhang portion behind the rear axle.

[0006] Furthermore, the all-in-one controller integrates a high-voltage power distribution controller, a steering controller, an air compressor controller, and a DC-DC controller, in addition to the motor controller.

[0007] Furthermore, the all-in-one controller is installed in the rear suspension at a position corresponding to the last row of seats in the vehicle body, and the battery pack is installed in the rear suspension near the rear axle.

[0008] Furthermore, the rear overhang portion has two compartments at the front and rear respectively. The front compartment forms a battery compartment for placing the battery pack, and the rear compartment forms a controller compartment for placing the integrated controller.

[0009] Furthermore, a rear hatch is provided at the rear of the vehicle body, corresponding to the controller compartment, to facilitate the installation and maintenance of the all-in-one controller.

[0010] Furthermore, the height of the battery compartment is not higher than the height of the luggage compartment, so that the vehicle floor is generally flat, with only the last row of seats having an installation step for supporting the installation of the last row of seats.

[0011] Furthermore, the battery pack is mounted on a mounting bracket, and the bottom of the battery compartment is provided with an insertion port for the battery pack to be inserted from bottom to top, so that the battery pack can be inserted and the mounting bracket and the battery compartment frame can be fastened with fasteners to realize the installation of the battery pack.

[0012] Furthermore, the mounting bracket is a bracket located at the bottom of the battery pack. During installation, the top surface of the bracket fits against the bottom surface of the battery compartment frame to facilitate the installation of both using fasteners.

[0013] Furthermore, the battery pack is arranged in a stacked manner.

[0014] Furthermore, the luggage compartment extends through the middle section of the chassis body between the front and rear axles.

[0015] This utility model proposes a pioneering technical solution to address the aforementioned technical problems. The core concept of this utility model is to position the drive unit in front of the rear axle to facilitate balancing the axle load ratio between the front and rear axles, and to install the larger battery pack and the multi-function controller containing the motor controller in the rear suspension section behind the rear axle. This avoids the cumbersome installation problems caused by dispersing the battery pack and other components on the chassis, and also provides a larger luggage compartment space between the front and rear axles, facilitating the rapid installation of various components of the passenger vehicle. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of an electric bus according to the present invention;

[0017] Figure 2 for Figure 1 A top-down view of the internal structure.

[0018] In the diagram: 1. Front door; 2. Front wheel; 3. Battery compartment; 4. Floor; 5. Drive motor; 6. Drive shaft; 7. Rear wheel; 8. Rear axle; 9. Controller compartment; 10. Battery pack; 11. Step; 12. Rear door; 13. Seat; 14. Vehicle body. Detailed Implementation

[0019] This utility model proposes a pioneering technical solution to address the aforementioned technical problems. The core concept of this utility model is to position the drive unit in front of the rear axle to facilitate balancing the axle load ratio between the front and rear axles, and to install the larger battery pack and the multi-function controller containing the motor controller in the rear suspension section behind the rear axle. This avoids the cumbersome installation problems caused by dispersing the battery pack and other components on the chassis, and also provides a larger luggage compartment space between the front and rear axles, facilitating the rapid installation of various components of the passenger vehicle.

[0020] Based on the above concept, the electric bus of this utility model includes as follows: Figure 1 , Figure 2 The vehicle body 14 shown includes a chassis. Front wheels 2 and rear wheels 7 are respectively mounted on the ends of the front axle and rear axle 8 of the chassis. A front axle suspension is installed between the front axle and the vehicle body 14, and a rear axle suspension is installed between the rear axle 8 and the vehicle body 14. The suspensions are used to buffer road impacts to ensure smooth vehicle operation on the road. A battery pack 10, an electric drive unit, and a multi-function controller integrating a motor controller are mounted on the chassis. The luggage compartment is located on the chassis between the front and rear axles 8. The electric drive unit is located in front of the rear axle 8 and is connected to the rear axle 8 via transmission. Figure 1 As shown, the electric drive device is a drive motor 5, which is located in front of the rear axle and connected to the rear axle 8 via a drive shaft 6. Thus, the battery pack 10 does not need to be placed in front to balance the axle load of the front and rear axles of the passenger vehicle chassis. Therefore, in this embodiment, both the battery pack 10 and the multi-function controller are installed in the rear overhang section behind the rear axle 8. The multi-function controller integrates the motor controller and other controller components into a miniaturized, integrated control module, avoiding the cumbersome installation problems caused by the dispersed arrangement of various components and the battery pack on the chassis, facilitating the rapid installation of various components of the passenger vehicle. It also reduces the length of the high and low voltage wiring harnesses connecting various components and shortens the length of the cooling pipes used to cool the components, saving manufacturing costs and facilitating the overall vehicle weight reduction. Of course, the centrally located drive motor 5 and the presence of the multi-function controller reduce the number of components required in the rear overhang section, meaning the space required for the rear overhang section can be relatively reduced. In this case, the overall weight reduction of the electric bus can be achieved by shortening the length of the rear overhang section.

[0021] The all-in-one controller integrates a high-voltage power distribution controller, a steering controller, an air compressor controller, and a DC-DC converter controller, in addition to the motor controller. This integration of the various high-voltage power distribution components improves the overall vehicle installation efficiency and frees up space in the rear overhang. Of course, in other embodiments, the all-in-one controller can also integrate a generator controller, provided that reliable integration is ensured.

[0022] The multi-function controller is installed in the rear suspension section, corresponding to the position under the last row of seats in the vehicle body. The battery pack is installed in the rear suspension section near the rear axle. Specifically, the rear suspension section has two compartments, one at the front and one at the rear. The front compartment forms a battery compartment 3 for housing the battery pack 10, and the rear compartment forms a controller compartment 9 for housing the integrated controller. This ensures the orderly placement of the battery pack 10 and the multi-function controller, guaranteeing reliable installation of both. Figure 1 As shown, a rear hatch 12 is located at the rear of the vehicle body, corresponding to the controller compartment 9, to facilitate the installation and maintenance of the multi-function controller. The rear hatch 12 can be opened for efficient installation and maintenance operations when installing and repairing the multi-function controller. The height of the battery compartment 3 is no higher than the height of the luggage compartment, so that the vehicle floor is generally flat, with a step only at the last row of seats to provide space for the controller compartment 9. Figure 1 As shown, the height of the battery compartment 3 is the same as that of the luggage compartment, and the floor of the vehicle body is not constrained by the battery compartment 3. In this way, steps can be provided only at the last row of seats 13, which ensures the safety of passengers getting on and off the last row of the vehicle, and also ensures the aesthetics of the interior of the vehicle body 14.

[0023] The battery pack 10 is mounted on a mounting bracket, specifically a bracket located at the bottom of the battery pack. The bottom of the battery compartment 3 has a mounting port for the battery pack 10 to be inserted from bottom to top, allowing the battery pack 10 to pass through the mounting port until the top surface of the bracket is flush with the bottom surface of the battery compartment 3 frame. Fasteners are then used to secure the installation. This ensures both the reliability and efficiency of the battery pack 10 installation. Furthermore, the bracket is significantly lighter than traditional battery boxes, contributing to a lighter overall design for the passenger vehicle. In this embodiment, the battery packs 10 are arranged in a stacked configuration, achieving an efficient layout and facilitating their installation.

[0024] The luggage compartment extends through the middle section of the chassis body between the front and rear axles. This maximizes the luggage compartment's capacity. Of course, the electric bus of this embodiment can further increase the luggage compartment space by increasing the wheelbase.

[0025] Regarding the installation position of the all-in-one controller and battery pack, this utility model also provides other embodiments. In another embodiment, the all-in-one controller and battery pack can also be arranged side by side on the left and right sides of the rear overhang; or the all-in-one controller can be installed near the rear axle, and the battery pack can be installed in the area behind the all-in-one controller.

[0026] Regarding the height of the battery compartment, this utility model also provides other embodiments. In another embodiment, the height of the battery compartment may be higher than the height of the luggage compartment. In this case, a step may be set in front of the last row of seats according to the height of the luggage compartment.

[0027] Regarding the arrangement and installation of the battery pack, this utility model also provides other embodiments. In one embodiment, the mounting bracket can also be a box frame, with the battery pack installed in the box frame. The top of the box frame is provided with an mounting edge for installation with the top wall of the battery compartment, and the box frame is connected to the top wall of the battery compartment by bolts. In another embodiment, the battery compartment can also have a door on its side. The battery pack is installed in the battery box and pushed into the battery compartment through the door side, and then the battery box and battery compartment are installed by screws. In another embodiment, the battery pack itself has a connecting frame edge for fixed installation with the battery compartment, thereby achieving the fixation of the battery pack. In another embodiment, the battery pack can also be laid flat inside the battery compartment.

[0028] Regarding the layout of the luggage compartment, this utility model also provides other embodiments. In another embodiment, the luggage compartment is also arranged in sections within the space between the front axle and the rear axle.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. An electric bus, characterized in that: The vehicle includes a body, which includes a chassis. The chassis also houses a battery pack, an electric drive unit, and a multi-function controller that integrates a motor controller. The luggage compartment is located on the chassis between the front and rear axles. The electric drive unit is located in front of the rear axle and is connected to the rear axle drive. The battery pack and the multi-function controller are both installed in the rear suspension section behind the rear axle.

2. The electric bus according to claim 1, characterized in that: In addition to the motor controller, the all-in-one controller also integrates a high-voltage power distribution controller, a steering controller, an air compressor controller, and a DC-DC controller.

3. The electric bus according to claim 1 or 2, characterized in that: The all-in-one controller is installed in the rear suspension section at a position corresponding to the last row of seats in the vehicle body, and the battery pack is installed in the rear suspension section near the rear axle.

4. The electric bus according to claim 3, characterized in that: The rear overhang has two compartments at the front and rear, respectively. The front compartment forms a battery compartment for housing the battery pack, and the rear compartment forms a controller compartment for housing the integrated controller.

5. The electric bus according to claim 4, characterized in that: A rear hatch is located at the rear of the vehicle body, corresponding to the controller compartment, to facilitate the installation and maintenance of the all-in-one controller.

6. The electric bus according to claim 4 or 5, characterized in that: The height of the battery compartment is no higher than that of the luggage compartment, so that the vehicle floor is generally flat, with only the last row of seats having an installation step for supporting the installation of the last row of seats.

7. The electric bus according to claim 4 or 5, characterized in that: The battery pack is mounted on a mounting bracket, and the bottom of the battery compartment is provided with an insertion port for the battery pack to be inserted from bottom to top, so that the battery pack can be inserted and the mounting bracket and the battery compartment frame can be fastened with fasteners to realize the installation of the battery pack.

8. The electric bus according to claim 7, characterized in that: The mounting bracket is a bracket set at the bottom of the battery pack. During installation, the top surface of the bracket is aligned with the bottom surface of the battery compartment frame to facilitate the installation of both using fasteners.

9. The electric bus according to claim 1 or 2, characterized in that: The battery packs are arranged in a stacked manner.

10. The electric bus according to claim 1 or 2, characterized in that: The luggage compartment runs through the middle section of the chassis body between the front and rear axles.

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