Passive non-contact charging protection system

Abstract

The invention discloses a passive non-contact charging protection system, and the system comprises a transmitting module which is used for radiating energy outwards; the receiving module is used for receiving the energy of the transmitting module; and the passive protection module is arranged on the receiving module, and the passive protection module is used for performing charging control according to the state of the receiving module. According to the invention, stable operation of the transmitting module is protected through monitoring of the passive protection module; stable operation of the system and correct data transmission are guaranteed through synchronously stored local data and cloud data, coil transmission structures are reduced through a passive non-contact hardware structure, and decoupling of a power generation unit and a detection unit is achieved. Based on the simple structure of the transmitting module and the receiving module, the subsequent maintenance is mostly concentrated on the passive protection module and the local control module, the disassembly is convenient, and the troubleshooting is simple.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and in particular to a passive contactless charging protection system. Background Art

[0002] With the popularity of electric vehicles, electric vehicles are gradually changing people's travel methods with their environmental protection and energy-saving characteristics. The convenience and safety of charging have always been key issues that need to be solved in the process of popularizing electric vehicles. Wireless charging technology has been increasingly valued in the field of car charging due to its advantages such as no need for physical connection and convenient use. Wireless charging technology not only improves the user's charging experience, but also promotes the intelligentization and networking of electric vehicle charging infrastructure.

[0003] There are many ways to charge, from traditional wired charging to emerging wireless charging, each with its own unique advantages. Wireless charging technology achieves wireless transmission of electrical energy through electromagnetic induction, magnetic resonance or radio waves, completely getting rid of the constraints of cables. Compared with wired charging, wireless charging technology has higher convenience and flexibility. Users can charge electric vehicles anytime and anywhere without worrying about the plugging and unplugging and storage of cables. In addition, wireless charging technology can effectively avoid safety hazards caused by cable wear and improper plugging, thereby improving the safety of the charging process.

[0004] Wireless charging technology has shown great potential in the field of electric vehicle charging, but there are still many problems in its practical application. Especially for the large-capacity batteries and high charging current requirements of electric vehicles, the existing wireless charging technology has great safety hazards during the charging process. Due to the large battery capacity and high charging current of electric vehicles, problems such as overheating, overcurrent and overvoltage are prone to occur during the charging process, which may cause battery damage or even fire and other safety accidents. Traditional charging protection schemes mostly rely on active circuits, which not only increases the complexity and cost of the system, but also reduces the reliability of the system. Active circuits require additional power supplies and control systems to monitor and adjust parameters such as voltage, current and temperature during the charging process. Once these systems fail or fail, it will directly affect the safety and stability of the charging process. Summary of the invention

[0005] The embodiment of the present invention provides a passive contactless charging protection system to solve the problems in the prior art that the traditional charging protection scheme is complex, costly, and has low reliability, which affects the safety and stability of the charging process.

[0006] On the one hand, an embodiment of the present invention provides a passive contactless charging protection system, including: A transmitting module, wherein the transmitting module is used to radiate energy outwards; A receiving module, the receiving module is used to receive energy from the transmitting module; A passive protection module, the passive protection module is arranged on the receiving module, and the passive protection module is used to perform charging control according to the state of the receiving module; A local control module, the local control module is used to store the monitoring data of the transmitting module, the receiving module and the passive protection module, and the local control module controls the transmitting module, the receiving module and the passive protection module through a wireless network; A remote control module, the remote control module is connected to the local control module via the Internet, and the remote control module is provided with a visual control terminal; The transmitting module is welded to the ground of the parking area, the receiving module is arranged at the bottom of the vehicle, and the passive protection module is arranged on the receiving module.

[0007] In a possible implementation, the transmitting module includes a waterproof shell, a transmitting coil, a transmitting power control unit and a transmitting heat dissipation auxiliary unit. The transmitting coil is installed in the waterproof shell, the transmitting coil is controlled by the transmitting power control unit, and the transmitting heat dissipation auxiliary unit is arranged under the transmitting coil.

[0008] In a possible implementation, the receiving module includes a receiving coil, a receiving rectifying unit, a receiving power control unit and a receiving heat dissipation unit, and the receiving rectifying unit, the receiving power control unit and the receiving coil are electrically connected.

[0009] In a possible implementation, the local control module includes a local storage unit, a local communication unit, and a local control unit, and the local communication unit is electrically connected to the local storage unit and the local control unit.

[0010] In a possible implementation, the passive protection module includes a voltage detection unit, a current detection unit, a temperature detection unit and a passive control unit, the voltage detection unit, the current detection unit and the temperature detection unit are electrically connected to the passive control unit, and the voltage detection unit, the current detection unit and the temperature detection unit are arranged on the receiving module.

[0011] In a possible implementation, the remote control module includes a remote communication unit, a cloud storage unit, and a visual mobile terminal.

[0012] A passive contactless charging protection system in the present invention has the following advantages: (1) Through the voltage detection unit of the passive protection module, the voltage change of the transmitting coil is indirectly monitored through the electromagnetic coupling relationship with the transmitting module. At the same time, the non-contact temperature detection unit is used to issue an alarm notification for the detected overheating. Finally, based on the current detection unit, the current change in the receiving coil is monitored. By analyzing the waveform, phase and other characteristics of the received current and combining with the known electromagnetic coupling model, the working status of the transmitting module is indirectly evaluated. If an abnormal current is detected, appropriate protection measures are taken. The stable operation of the monitoring and protection transmitting module is ensured.

[0013] (2) Ensure stable system operation and correct data transmission by synchronizing local data and cloud data.

[0014] (3) Through the passive non-contact hardware structure, the coil transmission structure is reduced, and the power unit and the detection unit are decoupled. Based on the simple structure of the transmitting module and the receiving module, most of the subsequent maintenance is concentrated on the passive protection module and the local control module, which is easy to disassemble and simple to troubleshoot. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic structural diagram of a passive contactless charging protection system provided by an embodiment of the present invention; Figure 2 A passive protection module of a passive contactless charging protection system provided by an embodiment of the present invention; Figure 3 A schematic diagram of a control system of a passive contactless charging protection system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Figure 1 A schematic diagram of a passive contactless charging protection system provided in an embodiment of the present invention; an embodiment of the present invention provides a passive contactless charging protection system, comprising: A transmitting module, wherein the transmitting module is used to radiate energy outwards; A receiving module, the receiving module is used to receive energy from the transmitting module; A passive protection module, the passive protection module is arranged on the receiving module, and the passive protection module is used to perform charging control according to the state of the receiving module; A local control module, the local control module is used to store the monitoring data of the transmitting module, the receiving module and the passive protection module, and the local control module controls the transmitting module, the receiving module and the passive protection module through a wireless network; A remote control module, the remote control module is connected to the local control module via the Internet, and the remote control module is provided with a visual control terminal; The transmitting module is welded to the ground of the parking area, the receiving module is arranged at the bottom of the vehicle, and the passive protection module is arranged on the transmitting module; The transmitting module includes a waterproof shell, a transmitting coil, a transmitting power control unit and a transmitting heat dissipation auxiliary unit. The transmitting coil is installed in the waterproof shell, the transmitting coil is controlled by the transmitting power control unit, and the transmitting heat dissipation auxiliary unit is arranged under the transmitting coil. The receiving module includes a receiving coil, a receiving rectifier unit, a receiving power control unit and a receiving heat dissipation unit. The receiving rectifier unit, the receiving power control unit and the receiving coil are electrically connected.

[0019] For example, Figure 2 , 3 The receiving module receives the energy emitted by the transmitting coil of the transmitting module in a non-contact manner through the receiving coil to achieve the purpose of charging. During the charging process, the generating coil generates an alternating magnetic field. When the current passes through the transmitting coil, an alternating magnetic field is generated. This magnetic field can penetrate the air gap and reach the receiving module. Through the local control module, the monitored magnetic flux (T), v alternating frequency (Hz), waveform characteristics, magnetic field direction, magnetic field distribution and other data are transmitted to the remote control module for uploading to the cloud. At the same time, the module will give priority to the embedded algorithm issued by the cloud-edge collaboration to perform preliminary calculation and analysis on the data locally, and will start the stop program for abnormal data; for complex data, after uploading to the cloud, the cloud big data center will perform ETL, dimension splitting, data analysis and calculation and other processes, and finally issue corresponding adjustment instructions to the local control module according to the calculation results. The ETL is a process of data extraction, conversion, and loading. The magnetic flux (T), v alternating frequency (Hz), waveform characteristics, magnetic field direction, and magnetic field distribution data are summarized and sorted through ETL.

[0020] In a possible embodiment, the passive protection module includes a voltage detection unit, a current detection unit, a temperature detection unit and a passive control unit, the voltage detection unit, the current detection unit and the temperature detection unit are electrically connected to the passive control unit, and the voltage detection unit, the current detection unit and the temperature detection unit are arranged on the receiving module; the remote control module includes a remote communication unit, a cloud storage unit and a visual mobile terminal.

[0021] Exemplarily, the voltage detection unit of the passive protection module indirectly monitors the voltage change of the transmitting coil through the electromagnetic coupling relationship with the transmitting module. At the same time, the non-contact temperature detection unit issues an alarm notification for the detected overheating. Finally, based on the current detection unit, the current change in the receiving coil is monitored, and the working state of the transmitting module is indirectly evaluated by analyzing the waveform, phase and other characteristics of the received current, combined with the known electromagnetic coupling model. If an abnormal current is detected, corresponding protection measures are taken. To monitor and protect the stable operation of the transmitting module, the remote control module receives the data of the local control module through the remote communication unit, stores it through the cloud storage unit, and then performs remote visual control through the visual mobile terminal.

[0022] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0023] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A passive contactless charging protection system, characterized in that: include: A transmitting module, wherein the transmitting module is used to radiate energy outwards; A receiving module, the receiving module is used to receive energy from the transmitting module; A passive protection module, the passive protection module is arranged on the receiving module, and the passive protection module is used to perform charging control according to the state of the receiving module; A local control module, the local control module is used to store the monitoring data of the transmitting module, the receiving module and the passive protection module, and the local control module controls the transmitting module, the receiving module and the passive protection module through a wireless network; A remote control module, the remote control module is connected to the local control module via the Internet, and the remote control module is provided with a visual control terminal; The transmitting module is welded to the ground of the parking area, the receiving module is arranged at the bottom of the vehicle, and the passive protection module is arranged on the receiving module.

2. A passive contactless charging protection system according to claim 1, characterized in that: The transmitting module includes a waterproof shell, a transmitting coil, a transmitting power control unit and a transmitting heat dissipation auxiliary unit. The transmitting coil is installed in the waterproof shell. The transmitting coil is controlled by the transmitting power control unit. The transmitting heat dissipation auxiliary unit is arranged under the transmitting coil.

3. A passive contactless charging protection system according to claim 1, characterized in that: The receiving module comprises a receiving coil, a receiving rectifying unit, a receiving power control unit and a receiving heat dissipation unit, and the receiving rectifying unit, the receiving power control unit and the receiving coil are electrically connected.

4. A passive contactless charging protection system according to claim 1, characterized in that: The local control module includes a local storage unit, a local communication unit and a local control unit, and the local communication unit is electrically connected to the local storage unit and the local control unit.

5. A passive contactless charging protection system according to claim 1, characterized in that: The passive protection module includes a voltage detection unit, a current detection unit, a temperature detection unit and a passive control unit, wherein the voltage detection unit, the current detection unit and the temperature detection unit are electrically connected to the passive control unit, and the voltage detection unit, the current detection unit and the temperature detection unit are arranged on the receiving module.

6. A passive contactless charging protection system according to claim 1, characterized in that: The remote control module includes a remote communication unit, a cloud storage unit and a visual mobile terminal.

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