A mobile car charging system

Abstract

The application discloses a movable automobile charging system, and relates to the technical field of automobile charging, which can move to the side of the automobile to charge when the user needs to charge, and return to the fixed position after charging is completed, thereby saving the time of the user to find the charging station. The application comprises: a movable energy storage unit, which is used for moving to the specified position to charge the automobile; a positioning system, which is used for collecting the position information of the automobile to be charged and the movable energy storage unit, and generating the action path of the movable energy storage unit moving to the charging position of the automobile to be charged; a machine vision unit, which is installed on the movable energy storage unit, and is used for real-time obstacle avoidance for the movable energy storage unit; and a user terminal, which is used for providing interaction between the user and the movable automobile charging system. Compared with the traditional fixed charging station, the application has the advantages of small occupied area and low construction cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile charging, and in particular to a movable automobile charging system. BACKGROUND

[0002] With the popularity of electric vehicles, a limited number of charging stations are difficult to meet the charging needs of a large number of electric vehicles, and the charging stations occupy a large volume of land, and the cost of building new charging stations is high. For old parking lots, the renovation project is even more difficult. When the user uses it, a lot of time is wasted in searching for limited charging stations, and at the same time, it is easy to cause congestion in the parking lot, reducing the user experience. SUMMARY

[0003] The present application provides a movable automobile charging system, which can move to the side of the automobile for charging when the user needs to charge, and return to the fixed position after charging is completed, saving the user's time in searching for charging stations. Compared with the traditional fixed charging station, it also has the advantages of small land occupation area and low construction cost.

[0004] To achieve the above purpose, the present application adopts the following technical scheme:

[0005] The movable automobile charging system comprises:

[0006] The movable energy storage unit is used to move to a specified position to charge the automobile;

[0007] The positioning system is used to collect the position information of the automobile to be charged and the movable energy storage unit, and generate a movement path for the movable energy storage unit to move to the charging position of the automobile to be charged;

[0008] The machine vision unit is installed on the movable energy storage unit and is used to provide real-time obstacle avoidance for the movable energy storage unit;

[0009] The user terminal is used to provide interaction between the user and the movable automobile charging system.

[0010] Further, the movable energy storage unit comprises a driving mechanism, a charging input port, a constant current and constant voltage control unit, a charge and discharge detection unit, a battery pack and an overvoltage and overcurrent protection circuit.

[0011] The charging input port is connected to the constant current and constant voltage control unit, the constant current and constant voltage control unit is connected to the battery pack, the output end of the battery pack is connected to the overvoltage and overcurrent protection circuit, and the output end of the overvoltage and overcurrent protection circuit is used to connect the automobile to be charged. The charge and discharge monitoring unit is connected to the constant current and constant voltage control unit and the battery pack.

[0012] The driving mechanism is used for receiving and executing the moving instruction sent by the positioning system, the charging input is used for connecting the mains, the power generation device and the charging device, the constant current and constant voltage control unit is used for controlling the stability of the charging voltage and current flowing into the charging input, the battery pack is used for storing electric energy, and the overvoltage and overcurrent protection circuit is used for controlling the stability of the voltage and current output by the battery pack.

[0013] Further, the movable energy storage unit further comprises an oil-gas hybrid generator connected with the charging input.

[0014] Further, the charge and discharge detection unit comprises a voltage and current detection circuit and a voltage equalization detection circuit, the input end of the voltage and current detection circuit is connected with the constant current and constant voltage control unit, the output end is connected with the energy storage battery pack, and the voltage equalization detection circuit is connected with the energy storage battery pack and the constant current and constant voltage control unit.

[0015] Further, the positioning system comprises:

[0016] A positioning base station is used for establishing a position coordinate system and detecting the position of a positioning tag;

[0017] The positioning tag is used for being installed on the movable energy storage unit and tracking and positioning the movable energy storage unit;

[0018] A control unit is used for collecting the position of the positioning tag detected by the positioning base station, generating a planned path and controlling the movable energy storage unit to move according to the planned path.

[0019] Further, the positioning base station is a UWB (Ultra Wide Band) positioning base station, and the UWB positioning base station is fixedly installed around the parking garage.

[0020] Further, the positioning tag is a UWB positioning tag.

[0021] Further, the control unit is a controller.

[0022] Further, the control unit is a cloud platform.

[0023] Further, the machine vision unit adopts a visual sensor, an ultrasonic sensor and an infrared sensor.

[0024] The present application has the following advantages:

[0025] (1) The energy storage unit can move to the side of the automobile for charging and return to the fixed position after the charging is completed, so that the user's time for searching for the charging station is saved, and compared with the traditional fixed charging station, the energy storage unit has the advantages of small occupied area and low construction cost;

[0026] (2) The energy storage unit can adapt to multiple charging modes, and the mains, solar power generation and oil-gas power generation can be applied;

[0027] (3) The energy storage unit is also equipped with a constant current and constant voltage control unit and an overvoltage and overcurrent protection circuit. The input and output of the battery pack are strictly controlled to avoid damage to the devices caused by unstable input and output, and to extend the service life of the battery pack and the load.

[0028] (4) The positioning system adopts UWB technology, which has strong penetration and high positioning accuracy, and can adapt to working conditions such as underground parking lots where the signal is weak and the positioning is inaccurate.

[0029] (5) The mobile energy storage unit uses machine vision technology to avoid obstacles in real time, adapting to the complex working conditions of frequent movement of people and vehicles and chaotic trajectories in the parking lot.

[0030] (6) Users can obtain charging system information and issue charging commands through the user terminal. The human-computer interaction is smooth and the user experience is good. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a structural diagram of the portable car charging system in an embodiment of the present invention;

[0033] Figure 2 This is a partial structural diagram of the portable energy storage unit in an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the installation of a UWB base station in an embodiment of the present invention. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to specific embodiments.

[0036] This invention provides a mobile car charging system, such as... Figure 1 As shown, it includes a mobile car charging system, comprising a mobile energy storage unit, a positioning system, a machine vision system, and a user terminal. The mobile energy storage unit is used to move to a designated location to charge a car; the positioning system is used to collect the location information of the car to be charged and the mobile energy storage unit, and generate a movement path for the mobile energy storage unit to move to the charging location of the car to be charged; the machine vision unit is installed on the mobile energy storage unit to perform real-time obstacle avoidance for the mobile energy storage unit; the user terminal is used to provide interaction between the user and the mobile car charging system.

[0037] The movable energy storage unit specifically includes a driving mechanism, a charging input port, a constant current and constant voltage control unit, a charge and discharge detection unit, a battery pack, and an overvoltage and overcurrent protection circuit, as shown in Figure 2 The driving mechanism is used to carry the entire movable energy storage unit to move according to the instructions issued by the positioning system. The other components of the movable energy storage unit are used for charging and discharging and power protection. The charging input port is connected to the constant current and constant voltage control unit, the constant current and constant voltage control unit is connected to the battery pack, the output end of the battery pack is connected to the overvoltage and overcurrent protection circuit, and the output end of the overvoltage and overcurrent protection circuit is used to connect the vehicle to be charged. The charge and discharge detection unit is connected to the constant current and constant voltage control unit and the battery pack.

[0038] When the movable energy storage unit needs to be charged, the charging input port inputs power through connection of commercial power, generator, solar power generation device, etc. In order to protect the battery pack from unstable current and voltage, a constant current and constant voltage control unit is arranged between the charging input port and the battery pack.

[0039] When the movable energy storage unit is connected to the vehicle to be charged for charging, the power enters the overvoltage and overcurrent protection circuit from the output end of the battery pack, and then enters the vehicle to be charged.

[0040] Further, the movable energy storage unit can also be configured to install a generator, especially an oil-gas hybrid generator. The output end of the generator is connected to the charging input port. In the case that the battery pack is insufficient in power and it is difficult to connect to commercial power or other charging equipment, the generator is used to generate power by using oil energy or clean energy.

[0041] The charge and discharge detection unit includes a voltage and current detection circuit and a voltage equalization detection circuit. The input end of the voltage and current detection circuit is connected to the constant current and constant voltage control unit, and the output end is connected to the energy storage battery pack. The voltage equalization detection circuit is connected to the energy storage battery pack and the constant current and constant voltage control unit. The charge and discharge detection unit can monitor the charging and discharging of the battery pack, and improve the stability of the system.

[0042] The positioning system uses UWB (Ultra Wide Band) positioning technology, including a UWB positioning base station, a UWB positioning tag, and an Iot (Internet of Things) positioning platform. The UWB positioning base station is used to be fixedly installed around the parking lot, as shown in Figure 3 , to provide reference information of the position, and establish a position coordinate system for the positioning system. The UWB positioning tag is arranged on the movable energy storage unit, and is used to identify the position of the movable energy storage unit in the positioning system, and has the characteristics of low power consumption, portability, waterproofness, and dustproofness. The Iot positioning platform is used to collect the position information of the UWB positioning base station and the UWB positioning tag, calculate the position of the movable energy storage unit according to the detection result, plan the movement track of the movable energy storage unit, and control the movement of the movable energy storage unit.

[0043] After the UWB positioning base station detects the UWB positioning tag, the UWB positioning base station verifies whether the UWB positioning tag is legal through the Iot positioning platform; for the legal UWB positioning tag, each UWB positioning base station simultaneously receives the high-frequency signal fed back by the UWB positioning tag and sends the high-frequency signal to the Iot positioning platform; the Iot positioning platform calculates the distance between the UWB positioning tag and each UWB positioning base station according to time and signal parameters, and obtains the position coordinates of the UWB positioning tag. When the movable energy storage unit moves, the Iot positioning platform calculates the real-time motion trajectory of the UWB tag according to the change of the position coordinates of the UWB tag within the interval time, sends the motion trajectory data to the user end, and facilitates the user to monitor.

[0044] Based on the characteristics of the UWB technology, the frequency band of the UWB positioning system is 3.1-10.6GHz, the bandwidth is greater than 500MHz, and the time domain is represented as a pulse with extremely short time (<2nS). It has the advantages of strong penetration, high positioning accuracy, good coexistence with other wireless devices, low power consumption, low transmission duty cycle, and insensitivity to Rayleigh fading.

[0045] When the movable energy storage unit moves, the machine vision unit is still needed to perform real-time obstacle avoidance due to the complex environment of the parking lot. The machine vision unit is installed on the movable energy storage unit, and generally uses a vision sensor, an ultrasonic sensor and an infrared sensor.

[0046] The embodiment of the present application also provides a working process of the movable charging system in actual use of a user, which comprises:

[0047] S1, the vehicle to be charged enters the entrance of the parking lot, and obtains an access card provided with a tag node; the access card is provided with a two-dimensional code with tag node information printed thereon; after the user end scans the two-dimensional code, the tag node ID information is uploaded to the Iot positioning platform;

[0048] S2, the Iot positioning platform collects the distance between the tag node and the UWB positioning base station detected by the three / four UWB positioning base stations closest to the tag node, and calculates the spatial coordinates of the tag node in the parking lot;

[0049] S3, the Iot positioning platform plans a moving path between the movable energy storage unit and the vehicle to be charged according to the tag node coordinates, and controls the driving mechanism on the movable energy storage unit to move;

[0050] S4, the movable energy storage unit performs real-time obstacle avoidance through the self-obstacle avoidance system during the movement;

[0051] S5, the movable energy storage unit moves to the position of the vehicle to be charged to perform charging.

[0052] (1) The energy storage unit can move to the car to charge on its own and return to a fixed position after charging is completed, saving users the time of searching for a charging station. Compared with traditional fixed charging stations, it also has the advantages of small footprint and low construction cost.

[0053] (2) The energy storage unit can be adapted to various charging methods, including mains power, solar power, and oil and gas power;

[0054] (3) The energy storage unit is also equipped with a constant current and constant voltage control unit and an overvoltage and overcurrent protection circuit. The input and output of the battery pack are strictly controlled to avoid damage to the devices caused by unstable input and output, and to extend the service life of the battery pack and the load.

[0055] (4) The positioning system adopts UWB technology, which has strong penetration and high positioning accuracy, and can adapt to working conditions such as underground parking lots where the signal is weak and the positioning is inaccurate.

[0056] (5) The mobile energy storage unit uses machine vision technology to avoid obstacles in real time, adapting to the complex working conditions of frequent movement of people and vehicles and chaotic trajectories in the parking lot.

[0057] (6) Users can obtain charging system information and issue charging commands through the user terminal. The human-computer interaction is smooth and the user experience is good.

[0058] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A mobile car charging system, characterized by, The application relates to a mobile energy storage unit for charging a vehicle at a designated position, a positioning system for collecting position information of a vehicle to be charged and the mobile energy storage unit and generating a movement path of the mobile energy storage unit to the charging position of the vehicle to be charged, a machine vision unit installed on the mobile energy storage unit for real-time obstacle avoidance of the mobile energy storage unit, and a user terminal for providing interaction between a user and the mobile vehicle charging system. The positioning system comprises a positioning base station for establishing a position coordinate system and detecting the position of a positioning tag, the positioning tag for being installed on the mobile energy storage unit and tracking and positioning the mobile energy storage unit, and a control unit for collecting the position of the positioning tag detected by the positioning base station, generating a planned path and controlling the mobile energy storage unit to move according to the planned path. The positioning base station is a UWB positioning base station fixedly installed around a parking garage. The positioning tag is a UWB positioning tag. The control unit is a controller. The mobile energy storage unit comprises a driving mechanism, a charging input port, a constant-current constant-voltage control unit, a charge and discharge detection unit, a battery pack and an overvoltage and overcurrent protection circuit. The charging input port is connected with the constant-current constant-voltage control unit, the constant-current constant-voltage control unit is connected with the battery pack, the output end of the battery pack is connected with the overvoltage and overcurrent protection circuit, the output end of the overvoltage and overcurrent protection circuit is used for connecting the vehicle to be charged, and the charge and discharge detection unit is connected with the constant-current constant-voltage control unit and the battery pack. The driving mechanism is used for receiving and running the movement instruction issued by the positioning system, the charging input port is used for connecting a commercial power supply, a power generation device and a charging device, the constant-current constant-voltage control unit is used for controlling the stability of the charging voltage and current flowing into the charging input port, the battery pack is used for storing electric energy, and the overvoltage and overcurrent protection circuit is used for controlling the stability of the voltage and current output by the battery pack. The mobile energy storage unit further comprises an oil-gas hybrid generator connected with the charging input port. The charge and discharge detection unit comprises a voltage and current detection circuit and a voltage equalization detection circuit, the input end of the voltage and current detection circuit is connected with the constant-current constant-voltage control unit, the output end is connected with the energy storage battery pack, and the voltage equalization detection circuit is connected with the energy storage battery pack and the constant-current constant-voltage control unit. The control unit is a cloud platform. The machine vision unit adopts a visual sensor, an ultrasonic sensor and an infrared sensor.

2. The mobile vehicle charging system of claim 1, wherein, ​ ​ ​ 3. The mobile vehicle charging system of claim 2, wherein, ​ 4. The mobile vehicle charging system of claim 2 or 3, wherein, ​ 5. The mobile vehicle charging system of claim 1, wherein, ​ 6. The mobile vehicle charging system of claim 1, wherein, ​

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