A new energy vehicle chassis structure

Abstract

The present invention discloses a new energy vehicle chassis structure, including a vehicle chassis, wherein the vehicle chassis is provided with an energy storage unit, a power transmission system, an electric power control system, a small three-electric system, a front suspension system, a rear suspension system, a frame, a front axle, a rear axle, a front wall, a rear skirt, a rear floor and four wheels; the electric power control system is arranged above the rear axle, and the power transmission system is arranged below the electric power control; there are two energy storage units and they are arranged at the front and rear ends of the vehicle chassis respectively, wherein the energy storage unit located at the front end of the vehicle chassis is the first energy storage unit, and the energy storage unit located at the rear end of the vehicle chassis is the second energy storage unit, the first energy storage unit is arranged just in front of the front wall, and the second energy storage unit is arranged just in front of the rear skirt and just behind the electric power control system. The vehicle chassis structure has a reasonable layout, is easy to install and maintain, and can effectively improve the system conversion efficiency and reduce energy consumption.

Description

Technical Field

[0001] The present invention relates to the field of new energy vehicles, and in particular to a chassis structure of a new energy vehicle. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as a power source (or use conventional vehicle fuels and new vehicle-mounted power devices), and integrate advanced technologies in vehicle power control and drive to form vehicles with advanced technical principles, new technologies, and new structures. Currently, the most common new energy vehicles on the market are pure electric vehicles, which are vehicles that mainly use batteries as energy storage power sources. They use batteries as energy storage power sources, provide electricity to the electric motor through the battery, drive the electric motor to operate, and thus drive the vehicle.

[0003] Existing pure electric vehicles have short driving range and long charging time. In addition, electric vehicles need to be charged at dedicated charging stations or charging piles, but there are no charging stations or charging piles in towns and villages, which limits the application of pure electric vehicles. The construction of charging stations and charging piles requires unified planning, which not only has high investment costs, but also a long cycle, further limiting the application of pure electric vehicles.

[0004] In addition, the existing pure electric vehicle chassis layout is unreasonable, which not only consumes energy quickly, but also has low efficiency in the installation and maintenance of various equipment, increasing the cost of use. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a new energy vehicle chassis with reasonable layout, low energy consumption, long cruising range, and convenient maintenance and installation.

[0006] The technical solution of the present invention is achieved in this way:

[0007] A new energy vehicle chassis structure comprises a vehicle chassis, wherein the vehicle chassis is provided with an energy storage unit, a power transmission system, an electric power control system, a small three-electric system, a front suspension system, a rear suspension system, a frame, a front axle, a rear axle, a front panel, a rear skirt, a rear floor and four wheels; the electric power control system is arranged above the rear axle and the left and right ends of the electric power control system are equidistant from the left and right ends of the rear axle respectively, and the power transmission system is arranged below the electric power control system and fixed on the rear axle; there are two energy storage units and they are arranged at the front and rear ends of the vehicle chassis respectively, wherein the energy storage unit located at the front end of the vehicle chassis is a first energy storage unit, and the energy storage unit located at the rear end of the vehicle chassis is a second energy storage unit, the first energy storage unit is arranged directly in front of the front panel, and the second energy storage unit is arranged directly in front of the rear skirt and directly behind the electric power control system.

[0008] Furthermore, the power transmission system is fixed on the rear axle via a fixing bracket.

[0009] Furthermore, the first energy storage unit and the second energy storage unit are composed of a plurality of lithium battery modules.

[0010] Furthermore, the first energy storage unit and the second energy storage unit each have four groups of lithium battery modules, and the four groups of lithium battery modules are longitudinally arranged in parallel in the width direction of the automobile chassis.

[0011] Furthermore, the first energy storage unit and the second energy storage unit are composed of hydrogen bottle modules, and a hydrogen power supply system is provided on the vehicle chassis between the rear floor and the electric power control system, and the hydrogen power supply system is provided directly in front of the electric power control system.

[0012] Furthermore, a hydrogen production system is provided on the automobile chassis directly in front of the rear floor, and the hydrogen production system includes a hydrogen energy water storage unit and a hydrogen production unit; the small three-electric system is provided directly in front of the hydrogen production system and under the front seats.

[0013] Furthermore, a hydrogen power supply system is provided on the vehicle chassis between the rear floor and the electric power control system, and the hydrogen power supply system is provided directly in front of the electric power control system; a hydrogen production system is provided on the vehicle chassis directly in front of the rear floor, and the hydrogen production system includes a hydrogen water storage unit and a hydrogen production unit; the small three-electric system is provided directly in front of the hydrogen production system and is located under the front seats.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The electric power control system, power transmission system, energy storage unit, small three-electric system, hydrogen production system and hydrogen power supply system of the present invention are reasonably arranged and are all arranged in the middle of the longitudinal direction of the frame, so that the center of gravity is located on the longitudinal center line of the automobile chassis, ensuring the balance of the left and right sides of the automobile chassis and facilitating maintenance.

[0016] 2. The electric power control system and the power transmission system are set up vertically, which shortens the length of the high-voltage line, reduces energy consumption and improves energy conversion efficiency.

[0017] 3. The energy storage unit of the present invention is arranged at the front and rear ends of the automobile chassis, which is convenient and quick to replace, and at the same time improves the cruising range of the automobile.

[0018] 4. When the present invention uses hydrogen energy, it can be directly converted into electrical energy using a hydrogen bottle, or it can be converted into hydrogen energy using portable hydrogen water, and then converted into electrical energy to provide power for the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 - Schematic diagram of the structure of the present invention.

[0020] Figure 2 -Top view of the present invention.

[0021] Figure 3 - Front view of the invention.

[0022] Among them: 1-rear skirt; 2a-first energy storage unit; 2b-second energy storage unit; 3-rear longitudinal beam; 4-electric power control system; 5-hydrogen power supply system; 6-sill longitudinal beam; 7-hydrogen production system; 8-small three-electric system; 9-front longitudinal beam; 10-front panel; 11-front suspension system; 12-cabin longitudinal beam; 13-wheel; 14-rear floor; 15-rear suspension system; 16-power transmission system. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] See also Figure 1 , Figure 2 and Figure 3 A new energy vehicle chassis structure includes a vehicle chassis, on which an energy storage unit, a power transmission system 16, an electric power control system 4, a small three-electric system 8, a front suspension system 11, a rear suspension system 15, a frame, a front axle, a rear axle, a door sill longitudinal beam 6, a front longitudinal beam 9, a front wall panel 10, a rear skirt panel 1, a rear floor 14 and four wheels 13 are provided; the four wheels 13 are respectively arranged at the two ends of the front axle and the rear axle, the two wheels arranged at the two ends of the front axle are front wheels, and the two wheels arranged at the two ends of the rear axle are rear wheels, and the front axle and the rear axle are connected to the frame through the front suspension system 11 and the rear suspension system 15 respectively. The electric power control system 4 is arranged above the rear axle and the left and right ends of the electric power control system 4 are equidistant from the left and right ends of the rear axle respectively; the power transmission system 16 is arranged below the electric power control system 4 and fixed on the rear axle; there are two energy storage units and they are respectively arranged at the front and rear ends of the automobile chassis, wherein the energy storage unit located at the front end of the automobile chassis is the first energy storage unit 2a, and the energy storage unit located at the rear end of the automobile chassis is the second energy storage unit 2b, the first energy storage unit is arranged directly in front of the front panel 10, and the second energy storage unit is arranged directly in front of the rear skirt panel 1 and directly behind the electric power control system 4.

[0025] In this way, the left and right ends of the rear electric power control system 4 are equidistant from the rear longitudinal beams 3 arranged on the left and right sides of the rear end of the vehicle chassis. The center of gravity of the electric power control system falls on the longitudinal center line of the frame and the rear axle, ensuring the left and right side balance of the vehicle chassis. At the same time, the rear axle also plays an effective supporting role for the electric power control system.

[0026] At the same time, the power transmission system is located directly below the electric power control system. This not only has a compact structure and saves space in the car, but can also effectively reduce the space of the car, thereby reducing the energy consumption of the car. At the same time, after this arrangement, the high-voltage line used to connect the electric power control system and the power transmission system is relatively short, which can reduce energy consumption during power transmission and improve the system energy conversion efficiency, thereby reducing the operating cost of new energy vehicles.

[0027] In addition, this arrangement makes it convenient to inspect the electric power control system from above the car, and also makes it convenient to inspect the power transmission system from below the car chassis.

[0028] The energy storage units are arranged at the front and rear ends of the automobile chassis, the first energy storage unit is arranged between the left and right side longitudinal beams 12 of the vehicle cabin, and the second energy storage unit is arranged between the left and right side rear longitudinal beams, that is, they are arranged in the front compartment and the rear compartment of the vehicle respectively, so that the energy storage units at the front and rear ends are conveniently and quickly replaced after the energy is consumed, and the operation is convenient and fast. At the same time, the energy storage units are arranged at the front and rear ends to effectively improve the cruising range of the vehicle.

[0029] The electric power control system includes three major electric control systems and a high-voltage management system. The three major electric control systems include power batteries, motor controllers and drive motors; the power battery: the energy storage object of the electric vehicle, which stores electric energy to drive the whole vehicle by charging the power battery. The power battery is generally a plurality of single-cell voltages connected in series. The power battery is generally controlled by the BMS, mainly by controlling the temperature of the single-cell voltage and controlling the consistency of the single-cell voltage to ensure the stability of the voltage of the whole vehicle. The motor controller: as one of the three major electrics of the whole vehicle, the motor controller is also a relatively key component in the whole vehicle. It controls the low-speed, high-speed, forward, backward and other actions of the whole vehicle by receiving VCU control instructions, such as speed, torque and other instructions. The drive motor: the current drive motors mainly include permanent magnet synchronous motors and AC asynchronous motors, and the power of the motors ranges from 40KW to hundreds of kilowatts. The motor has water cooling and natural cooling. High power generally uses water cooling, and low power uses air cooling. If the temperature rises, the motor will work at a reduced power, and the output will be turned off when the temperature rises to a certain limit.

[0030] The three small electric systems refer to the air conditioning system, steering system and braking system. The air conditioning system is a device that realizes cooling, heating, ventilation and air purification of the air in the car. It can provide a comfortable riding environment for passengers, reduce driver fatigue and improve driving safety. The steering system is a mechanism used to change or maintain the direction of the car, thereby controlling the direction of the car according to the driver's wishes. The braking system technically guarantees the safe driving of the car, increases the average speed of the car, etc., and the braking device installed on the car is a special braking mechanism, which is mainly a series of special devices that apply a certain force to the wheels, thereby forcing them to brake to a certain extent.

[0031] The power transmission system is fixed on the rear axle via a fixing bracket.

[0032] The first energy storage unit and the second energy storage unit are composed of a plurality of lithium battery modules. After such arrangement, the lithium batteries can be replaced in groups. The weight of a single group of lithium batteries is light, and replacement is easier and more convenient. In this embodiment, the weight of a single group of lithium battery modules is 8-10 kg, which is suitable for a wide range of people.

[0033] The first energy storage unit and the second energy storage unit each have four groups of lithium battery modules, and the four groups of lithium battery modules are arranged in parallel in the width direction of the automobile chassis. After each four groups of lithium battery modules are arranged at the front and rear ends of the automobile chassis, the layout is more compact, which can effectively save space in the automobile.

[0034] The first energy storage unit and the second energy storage unit can also be composed of hydrogen bottle modules to replace the lithium battery module to provide energy to the car, and a hydrogen power supply system 5 is provided on the car chassis between the rear floor and the electric power control system, and the hydrogen power supply system is arranged directly in front of the electric power control system.

[0035] In this way, after the hydrogen bottle is converted into electric energy by the hydrogen power system, the hydrogen power system is close to the electric power control system and the power transmission system, which can achieve efficient conversion of electric energy and improve energy utilization. After this arrangement, the hydrogen power system is located just under the rear seats, so that it is convenient to open the rear seats to inspect the hydrogen power system later.

[0036] A hydrogen production system 7 is provided on the chassis of the car just in front of the rear floor, and the hydrogen production system includes a hydrogen energy water storage unit and a hydrogen production unit; the small three-electric system 8 is provided just in front of the hydrogen production system and under the front seats.

[0037] In this way, even when the energy of the hydrogen bottle module is consumed, the hydrogen production system can be used to convert hydrogen water into hydrogen gas, and then converted into electrical energy in the hydrogen power system to meet the needs of vehicle operation. The hydrogen water level described here is 50-60% methanol water, and the hydrogen water occupies a small space and is easy to carry. The small three-electric system is located under the front seat, so it is easy to open the seat to inspect the small three-electric system.

[0038] A hydrogen power supply system is provided on the chassis between the rear floor and the electric power control system, and the hydrogen power supply system is provided in front of the electric power control system; a hydrogen production system is provided on the chassis in front of the rear floor, and the hydrogen production system includes a hydrogen water storage unit and a hydrogen production unit; the small three-electric system is provided in front of the hydrogen production system and under the front seats. In this way, even when the energy of the lithium battery module is consumed, the hydrogen water can be converted into hydrogen gas by using the hydrogen production system, and then converted into electrical energy in the hydrogen power supply system to meet the needs of vehicle operation.

[0039] Finally, it should be noted that the above embodiments of the present invention are only examples for illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes and modifications can be made based on the above description. It is impossible to list all implementation methods here. Any obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A new energy vehicle chassis structure, comprising a vehicle chassis, wherein the vehicle chassis is provided with an energy storage unit, a power transmission system, an electric power control system, a small three-electric system, a front suspension system, a rear suspension system, a frame, a front axle, a rear axle, a front wall panel, a rear skirt panel, a rear floor panel and four wheels; characterized in that: The electric power control system is arranged above the rear axle, and the left and right ends of the electric power control system are equidistant from the left and right ends of the rear axle respectively; the power transmission system is arranged below the electric power control system and fixed on the rear axle, which is beneficial to saving automobile space, reducing energy consumption and maintenance; there are two energy storage units, which are arranged at the front and rear ends of the automobile chassis respectively, wherein the energy storage unit located at the front end of the automobile chassis is the first energy storage unit, and the energy storage unit located at the rear end of the automobile chassis is the second energy storage unit, the first energy storage unit is arranged just in front of the front panel, and the second energy storage unit is arranged just in front of the rear skirt and just behind the electric power control system; the energy storage unit and the small three-electric system are arranged in the middle of the longitudinal direction of the frame; A hydrogen power supply system is provided on the vehicle chassis between the rear floor and the electric power control system, and the hydrogen power supply system is provided directly in front of the electric power control system; a hydrogen production system is provided on the vehicle chassis directly in front of the rear floor, and the hydrogen production system includes a hydrogen water storage unit and a hydrogen production unit; the small three-electric system is provided directly in front of the hydrogen production system and under the front seats; the small three-electric system is an air-conditioning system, a steering system and a braking system, and the hydrogen water is 50-60% methanol water.

2. A new energy vehicle chassis structure according to claim 1, characterized in that: The power transmission system is fixed on the rear axle via a fixing bracket.

3. The new energy vehicle chassis structure according to claim 1, characterized in that: The first energy storage unit and the second energy storage unit are composed of a plurality of lithium battery modules.

4. A new energy vehicle chassis structure according to claim 3, characterized in that: The first energy storage unit and the second energy storage unit each have four groups of lithium battery modules, and the four groups of lithium battery modules are longitudinally arranged in parallel in the width direction of the automobile chassis.

5. The new energy vehicle chassis structure according to claim 1, characterized in that: The first energy storage unit and the second energy storage unit are composed of hydrogen bottle modules.

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