CN110370948A - A kind of electronic Vehicular drive system - Google Patents

Abstract

The invention disclosed by the invention belongs to the technical field of electric vehicles, specifically a driving system for electric vehicles, including a base plate, a left front wheel, a right front wheel, a rear wheel, a driving power supply, a voltage regulator, a control assembly, a motor controller, a left side transformer, right transformer, left motor and right motor, the bottom upper left position of the base plate is connected with the left front wheel, the bottom right upper position of the base plate is connected with the right front wheel, the bottom rear side of the base plate It is connected with the two rear wheels, the driving power is installed on the top of the base plate, the voltage stabilizer is installed at the connection between the driving power and the control assembly, the left motor and the right motor are connected to the motor controller The connection points are respectively connected with the left transformer and the right transformer. Through the two transformers installed on the device, the electric steering is realized through the transformer instead of the traditional differential while the motor controller is used to control the motor rotation, which is economical and practical.

Description

A driving system for an electric vehicle

technical field

The invention relates to the technical field of electric vehicles, in particular to a drive system for electric vehicles.

Background technique

An electric vehicle (BEV) refers to a vehicle that is powered by a vehicle-mounted power supply, drives the wheels with a motor, and meets the requirements of road traffic and safety regulations. Due to its smaller impact on the environment than traditional cars, its prospects are widely optimistic, but the current technology is still immature.

The drive system is one of the most important systems in electric vehicles. The running performance of an electric vehicle is mainly determined by its drive system. The electric vehicle drive system consists of traction motors, motor controllers, mechanical transmissions, wheels, etc. Its energy storage power source is a battery pack. The motor controller receives the output signals from the accelerator pedal (equivalent to the gas pedal of a fuel car), the brake pedal and the PDRN (parking, forward, reverse, neutral) control handle, controls the rotation of the traction motor, and passes through the reducer, drive shaft, differential Mechanical transmission devices such as gearboxes and half shafts (the mechanical transmission devices are different when electric vehicles use electric wheels) drive the driving wheels. When the vehicle decelerates, the motor brakes the vehicle forward. At this time, the motor is in the running state of the generator to charge the energy storage power source, which is called regenerative braking. The regenerative braking function of the power drive system is very important, and it can increase the mileage of electric vehicles by 15-25% after a single charge.

The wheel drive system in the existing drive system uses a differential to drive and assist the steering of the wheels. The differential needs to be implemented with a huge mechanical transmission structure when it is used. It is very difficult to maintain and will be upgraded in the future. Manual operation is still required, and the weight of the mechanical structure is relatively large, which increases the weight of the vehicle, inadvertently increases the energy consumption of the drive motor, and reduces the service life of the vehicle.

Contents of the invention

The purpose of this section is to outline some aspects of embodiments of the invention and to briefly describe some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and titles of this application, to avoid obscuring the purpose of this section, abstract and titles, and such simplifications or omissions should not be used to limit the scope of the invention.

In view of the problems mentioned above and/or in existing electric vehicles, the present invention is proposed.

Therefore, the object of the present invention is to provide a driving system for electric vehicles, which can reduce the steering mechanism, facilitate control and reduce the weight of the vehicle.

In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

A driving system for an electric vehicle, including a substrate, a left front wheel, a right front wheel, a rear wheel, a driving power supply, a voltage stabilizer, a control assembly, a motor controller, a left transformer, a right transformer, a left motor and a right side motor, the bottom upper left position of the base plate is connected with the left front wheel, the bottom right upper position of the base plate is connected with the right front wheel, the bottom rear side of the base plate is connected with the two rear wheels, and the drive The power supply is installed on the top of the substrate, the voltage stabilizer is installed at the connection between the drive power supply and the control assembly, the control assembly is installed on the top of the substrate, and the output end of the control assembly is connected to the motor controller through a connecting line connection, the two output terminals of the motor controller are respectively connected to the left motor and the right motor through connecting wires, and the connections between the left motor and the right motor and the motor controller are respectively connected to the left transformer and the right Transformer connection.

As a preferred solution of the driving system for electric vehicles according to the present invention, wherein: the driving power supply is a battery pack, and the battery pack consists of 9 batteries installed on the top of the substrate in a 3x3 array, and the battery An aluminum foil paper layer is installed between the battery pack and the base plate, and a compression-resistant alloy plate is installed on the top of the battery pack.

As a preferred solution of an electric vehicle drive system according to the present invention, wherein: the stabilized voltage range of the voltage regulator is 240-380v.

As a preferred solution of the drive system for electric vehicles according to the present invention, wherein: the specifications of the left motor and the right motor are the same, and the specifications of the left transformer and the right transformer are the same.

As a preferred solution of the drive system for electric vehicles described in the present invention, wherein: the control assembly is a commercially available control device for controlling the drive power of electric vehicles, and the motor controller is a commercially available control device for controlling The control device for the left motor and the right motor of the electric vehicle.

Compared with the prior art: the differential gear on the steering device in the prior art is changed to use a transformer to adjust the voltage of the motor, thereby controlling the speed of the motor and realizing the differential speed between the left front wheel and the right front wheel, To achieve the purpose of steering, compared with the existing drive system using differential, this kind of drive steering mechanism does not need to use mechanical structure connection, which reduces the layout of vehicle components, reduces the bearing capacity of the substrate, and reduces the weight of the vehicle, which is convenient turn.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and detailed embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. Ordinary technicians can also obtain other drawings based on these drawings without paying creative labor. in:

Fig. 1 is the structural representation of a kind of driving system of electric vehicle of the present invention;

FIG. 2 is a schematic diagram of the system structure of an electric vehicle drive system according to the present invention.

In the figure: 100 base plate, 110 left front wheel, 120 right front wheel, 130 rear wheel, 200 drive power supply, 210 voltage regulator, 220 control assembly, 230 motor controller, 240 left transformer, 250 right transformer, 260 Left motor, 270 right motor.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. Similarly generalized, the present invention is therefore not limited by the specific embodiments disclosed below.

Secondly, the present invention is described in detail in conjunction with schematic diagrams. When describing the implementation of the present invention in detail, for the convenience of explanation, the cross-sectional view showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, and it should not be limited here. The protection scope of the present invention. In addition, the three-dimensional space dimensions of length, width and depth should be included in actual production.

In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

The present invention provides a driving system for an electric vehicle, which includes a substrate 100, a left front wheel 110, a right front wheel 120, a rear wheel 130, a driving power supply 200, a voltage regulator 210, a control assembly 220, a motor controller 230, a left Transformer 240, right transformer 250, left motor 260 and right motor 270;

Please refer to Fig. 1 again, the upper left position of the bottom of the substrate 100 is connected with the left front wheel 110, the upper right position of the bottom of the substrate 100 is connected with the right front wheel 120, the rear side of the bottom of the substrate 100 is connected with two rear wheels 130, and the driving power 200 is installed on the top of the substrate 100, the voltage regulator 210 is installed at the connection between the driving power supply 200 and the control assembly 220, the control assembly 220 is installed on the top of the substrate 100, and the output end of the control assembly 220 is connected to the motor control through the connection line. 230, the two output terminals of the motor controller 230 are respectively connected to the left motor 260 and the right motor 270 through connecting wires, and the connections between the left motor 260 and the right motor 270 and the motor controller 230 are connected to the left motor 230 respectively. The transformer 240 is connected to the right transformer 250 .

In the specific use process, the user gives the controller signal, and the controller controls the driving power supply 200 to power the left motor 260 and the right motor 270, so that the left motor 260 and the right motor 270 are started, and the motor controller 230 controls The rotation stability of the left motor 260 and the right motor 270, when the speed between the left front wheel 110 and the right front wheel 120 needs to be changed such as turning, the controller gives the motor controller 230 signal, and the motor controller 230 controls The left transformer 240 and the right transformer 250 perform voltage transformation. When a left turn is required, the motor controller 230 sends a signal to the left transformer 240, and the left transformer 240 steps down the voltage. At the same time, the linkage braking system decelerates. The rotation speed of the wheel 110 is lower than that of the right front wheel 120, and the right front wheel 120 rotates around the left front wheel 110. When it turns to a certain position, the linkage steering system adjusts the angle of the left front wheel 110 to realize the purpose of turning left. The same method can realize the purpose of turning right.

Please refer to FIG. 1 again, in order to improve the driving performance of the driving power supply 200, the driving power supply 200 is a battery pack, and the battery pack consists of 9 batteries installed on the top of the substrate 100 in a 3x3 array, and aluminum foil is installed between the battery pack and the substrate 100 The top of the battery pack is equipped with a compression alloy plate, which improves the overall compression performance of the battery pack and improves heat dissipation performance.

Please refer to Figure 1 again. For the voltage regulation performance of the voltage regulator 210, the voltage regulation range of the voltage regulator 210 is 240-380v, which is suitable for charging with household power supply and industrial power supply, and at the same time facilitates the operation of electric vehicles within this voltage range .

Please refer to Fig. 1 again, in order to facilitate the rotation speed of the left motor 260 and the right motor 270 at the same voltage to facilitate control, the specifications of the left motor 260 and the right motor 270 are the same, in order to facilitate the adjustment of the left transformer 240 and The specifications of the right transformer 250, the left transformer 240 and the right transformer 250 are the same.

Please refer to Fig. 1 again, in order to facilitate the replacement of the motor controller 230, in order to facilitate the replacement of the control assembly 220, the control assembly 220 is a commercially available control device for controlling the driving power supply 200 of the electric vehicle, and the motor controller 230 is a commercially available A control device for controlling the left motor 260 and the right motor 270 of the electric vehicle.

While the invention has been described above with reference to the embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention can be used in combination with each other in any way, and the description of these combinations is not exhaustive in this specification only to show In consideration of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims (5)

1. a kind of electronic Vehicular drive system, it is characterised in that: including substrate (100), the near front wheel (110), off-front wheel (120), Rear-wheel (130), driving power (200), voltage-stablizer (210), control assembly (220), electric machine controller (230), left side transformer (240), right side transformer (250), left motor (260) and right motor (270), the bottom upper left side of the substrate (100) Position is connect with the near front wheel (110), and the bottom, right top position of the substrate (100) is connect with off-front wheel (120), the substrate (100) bottom rear is connect with two rear-wheels (130), and the driving power (200) is mounted on the top of substrate (100) Portion, the voltage-stablizer (210) are mounted on driving power (200) and control the junction of assembly (220), the control assembly (220) it is mounted on the top of substrate (100), the output end of control assembly (220) passes through connecting line and electric machine controller (230) connect, two output ends of the electric machine controller (230) by connecting line respectively with left motor (260) and right side Motor (270) connection, the junction of the left motor (260) and right motor (270) and electric machine controller (230) respectively with Left side transformer (240) and right side transformer (250) connection.

2. a kind of electronic Vehicular drive system according to claim 1, it is characterised in that: the driving power (200) is Battery pack, the battery pack are mounted on the top of substrate (100), the battery pack and substrate by 9 pieces of batteries according to the array of 3x3 (100) aluminium foil paper layer is installed between, resistance to compression alloy sheets are installed at the top of the battery pack.

3. a kind of electronic Vehicular drive system according to claim 1, it is characterised in that: the voltage-stablizer (210) it is steady Pressure range is 240-380v.

4. a kind of electronic Vehicular drive system according to claim 1, it is characterised in that: the left motor (260) and The specification of right motor (270) is identical, and the left side transformer (240) is identical with the specification of right side transformer (250).

5. a kind of electronic Vehicular drive system according to claim 1, it is characterised in that: the control assembly (220) is It is commercially available for the control device of control electric car driving power (200), the electric machine controller (230) is to be commercially available for controlling The control device of electric car left motor (260) and right motor (270).