Unmanned vehicle power system based on urban landscaping

Abstract

The utility model relates to the technical field of urban landscaping, in particular to an unmanned vehicle power system based on urban landscaping, which comprises a main power supply, a standby power supply, an electric energy distribution unit, a left motor and a right motor, wherein the main power supply and the standby power supply are connected with the electric energy distribution unit through the power supply switching system, and the electric energy distribution unit receives power supply energy and distributes the power supply energy to the left motor and the right motor for use according to requirements; the electric energy distribution unit comprises a central power distribution unit and an electric quantity display module, and a battery provides a power supply required by the whole vehicle; according to the utility model, through the electric energy distribution unit, the whole vehicle framework of the unmanned vehicle is defined, so that the platform expansion of the vehicle is quicker and more convenient, the platform planning of the vehicle is facilitated, the structure is light, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of urban greening, in particular to a power system for an unmanned vehicle used for urban greening. Background Art

[0002] With the recent development of autonomous driving technology, autonomous cleaning technology will greatly reduce the pressure on urban greening workers. In complex environments such as parks and urban roads, unmanned sweepers can be seen carrying out urban greening work. As the times progress, unmanned sweepers are gradually entering the electric era.

[0003] The electrical system connections of existing unmanned road sweepers are relatively messy, and there is no relatively systematic electrical system architecture. Most of them are simply connected based on existing sub-components, and there is a lack of a complete concept of the entire vehicle. As a result, the electrical layout of each unit is messy, the electrical circuits do not have corresponding control and protection units, and the intricate line connections cause adverse effects on each other; this creates a relatively large hidden danger to the operation and use of the vehicle, and causes great difficulties when the vehicle needs to be modified or repaired and maintained; at the same time, unmanned road sweepers are generally only equipped with a separate power supply. Once the power supply is low or damaged, the unmanned road sweeper can only stop in the middle of the road, causing traffic congestion. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a power system for an unmanned vehicle used for urban greening.

[0005] The embodiment of the present application provides a power system for an unmanned vehicle for urban greening, including a main power supply, a backup power supply, an electric energy distribution unit, a left motor, and a right motor;

[0006] The main power supply and the backup power supply are connected to the power distribution unit through the power switching system, and the power distribution unit receives power and distributes it to the left motor and the right motor according to demand;

[0007] The power distribution unit includes a central power distribution unit and a power display module, and the battery provides the power supply required by the entire vehicle;

[0008] The central power distribution unit is connected to the battery terminal, and the power display module is connected to the central power distribution unit.

[0009] Preferably, the central power distribution unit is also connected to the receiver main control, the vehicle controller, the vehicle upper module and the dual-drive motor controller respectively.

[0010] Preferably, the main power supply and the backup power supply both provide 48V power supply.

[0011] Preferably, the power switching system includes a main circuit and a control circuit;

[0012] In the main circuit, the KM1 main contact is connected to the main power supply, the KM2 main contact is connected to the backup power supply, the KM1 normally closed contact is connected in series to the KM2 coil circuit, and the KM2 normally closed contact is connected in series to the KM1 coil circuit, and the KM1 and KM2 main contacts form an interlock;

[0013] The control circuit is composed of signal lamps EL1, EL2, EL3, EL4, relay KA, AC contactor coils KM1 and KM2 and normally closed interlocking contacts.

[0014] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0015] 1. In the present invention, the whole vehicle structure of the unmanned vehicle is clarified through the power distribution unit, making the vehicle platform expansion faster and more convenient, which is conducive to vehicle platform planning, lightweight structure and low cost.

[0016] 2. In the present invention, when the main power supply of the unmanned vehicle fails during the urban greening process, the backup power supply is used to ensure the normal operation of the unmanned vehicle as a whole, and the vehicle can be temporarily driven to the side to avoid stopping in the middle of the road and causing road congestion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the unmanned vehicle power system for this application;

[0018] Figure 2 Schematic diagram of the power switching circuit in this application.

[0019] In the figure: 1- backup power supply, 2- main power supply, 3- power switching system, 4- power distribution unit, 5- left motor, 6- right motor. DETAILED DESCRIPTION

[0020] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended solely for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] See also Figure 1-2 , the utility model provides a technical solution:

[0024] A power system for an unmanned vehicle used for urban greening, comprising a main power supply 2, a backup power supply 1, an electric energy distribution unit, a left motor 5, and a right motor 6. The main power supply 2 and the backup power supply 1 are connected to the electric energy distribution unit via a power switching system 3. The electric energy distribution unit receives power and distributes it to the left motor 5 and the right motor 6 according to demand.

[0025] The power distribution unit includes a central power distribution unit and a power display module, and the battery provides the power required by the entire vehicle;

[0026] The central distribution unit is connected to the battery end and is responsible for connection, protection, and control of energy efficiency information collection and fault collection. The central distribution unit receives power energy and distributes it to other modules according to demand. The power display module is connected to the central distribution unit and displays the system voltage and remaining power in real time, making it convenient to read power information in real time.

[0027] In the above, the power source required by the entire vehicle is provided by the main power supply 2, and the central distribution unit inputs the electric energy from the main power supply 2 and distributes it to the dual-drive motor controller according to demand. The dual-drive motor controller respectively distributes the main drive circuit to the left and right motors to participate in the drive control, which clarifies the overall vehicle architecture of the unmanned vehicle, makes the vehicle platform expansion faster and more convenient, and is conducive to vehicle platform planning, lightweight structure, and low cost.

[0028] It should be noted that the application of Central Power Distribution Unit (CPDU) in power systems has been quite mature, and has also been widely used in fields such as intelligent power equipment.

[0029] The central power distribution unit is also connected to the receiver main control, vehicle controller, vehicle body module, and dual-drive motor controller. The receiver main control receives signals from the remote control terminal and transmits them to the vehicle controller. The vehicle controller receives the signals from the receiver main control and outputs corresponding actions to the vehicle body module and dual-drive motor controller through the IO port to complete vehicle driving and other actions. The dual-drive motor controller is connected to the left and right motors respectively, and the dual-drive motor controller allocates the main drive circuit to each motor for drive control.

[0030] The main power supply 2 and the backup power supply 1 both provide 48V power. The central power distribution unit is also connected to a charging port to replenish the battery.

[0031] The central power distribution unit is connected to the power display module to facilitate real-time reading of power information, connected to the receiver main control to provide power for it, connected to the vehicle controller to provide power for the vehicle controller, and connected to the vehicle body module to provide corresponding power supply for the body module.

[0032] like Figure 2 As shown in: the power switching system 3 includes a main circuit and a control circuit;

[0033] In the main circuit, the KM1 main contact is connected to the main power supply line, the KM2 main contact is connected to the backup circuit, the KM1 normally closed contact is connected in series to the KM2 coil circuit, and the KM2 normally closed contact is connected in series to the KM1 coil circuit. The KM1 and KM2 main contacts are interlocked.

[0034] The control circuit is composed of signal lights EL1, EL2, EL3, EL4, relay KA, AC contactor coils KM1 and KM2's normally closed interlocking contacts.

[0035] In the power switching system 3, when the main power supply 2 is energized, the main external power indicator EL1 lights up, the relay coil KM1 is energized, the relay normally open is closed, the main supply contactor coil KM1 circuit is connected, the KM1 main contact in the main supply circuit is closed, the main power supply 2 is connected, the indicator EL2 lights up, and at the same time, the KA normally closed and KM1 normally closed connected in series in the KM2 coil loop are disconnected, and the backup power supply contactor control circuit is locked. When the main supply circuit is out of power, the relay coil loses power, the KM1 coil loses power, and the backup control circuit is connected in series. The normally closed points KA and KM1 are reset, the backup line power supply contactor KM2 coil is energized, the main contacts are closed, and the backup line starts to supply power; when the main circuit resumes power supply, the KA coil is energized first, the KA normally open contact is closed, the normally closed contact is disconnected, the KM2 coil circuit is cut off, the backup power supply 1 is connected to the controller and disconnected, cutting off the backup power supply 1. At the same time, the normally closed point KM2 connected in series to the KM1 coil circuit is reset, the KM1 coil is reconnected, and the main supply circuit continues to supply power, thereby realizing automatic power supply of the backup power supply 1 when the main power supply 2 is powered off.

[0036] When the main power supply 2 of the unmanned vehicle loses power during the urban greening process, the backup power supply 1 is used to supply power, so that the unmanned vehicle can operate normally as a whole and can be temporarily driven to the side of the road to avoid stopping in the middle of the road and causing road congestion.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. A person skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A power system for an unmanned vehicle used for urban greening, characterized by: It comprises a main power supply (2), a backup power supply (1), an electric energy distribution unit, a left motor (5) and a right motor (6); The main power supply (2) and the backup power supply (1) are connected to an electric energy distribution unit via a power switching system (3), and the electric energy distribution unit receives power supply energy and distributes it to the left motor (5) and the right motor (6) for use according to demand; The power distribution unit includes a central power distribution unit and a power display module, and the battery provides the power supply required by the entire vehicle; The central power distribution unit is connected to the battery terminal, and the power display module is connected to the central power distribution unit.

2. The power system for an unmanned vehicle for urban greening according to claim 1, characterized in that: The central power distribution unit is also connected to the receiver main control, vehicle controller, vehicle upper module and dual-drive motor controller respectively.

3. The power system for an unmanned vehicle for urban greening according to claim 1, characterized in that: The main power supply (2) and the backup power supply (1) both provide 48V power supply.

4. The power system for an unmanned vehicle for urban greening according to claim 1, characterized in that: The power switching system (3) includes a main circuit and a control circuit; In the main circuit, the main contact of KM1 is connected to the main power supply (2), the main contact of KM2 is connected to the backup power supply (1), the normally closed contact of KM1 is connected in series to the coil circuit of KM2, the normally closed contact of KM2 is connected in series to the coil circuit of KM1, and the main contacts of KM1 and KM2 form an interlock; The control circuit is composed of signal lamps EL1, EL2, EL3, EL4, relay KA, AC contactor coils KM1 and KM2 and normally closed interlocking contacts.

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