Motor winding multiplexing wireless charging device and method

Abstract

The application relates to the technical field of new energy electric vehicles, and relates to a motor winding multiplexing wireless charging device and method. The device comprises a metal protective cover, an opening and closing support rod, a motor stator winding, a wireless communication module and a motor controller. The metal protective cover is used for protecting the motor stator winding. The opening and closing support rod is connected with the metal protective cover and is used for controlling the opening and closing of the metal protective cover. The motor stator winding is used as a receiving coil for wireless charging. The wireless communication module is used for wireless communication with a communication module of a wireless charging pile on the ground. The motor controller is used for controlling the receiving and rectification of electric energy and the data exchange with the wireless communication module. The motor coil is multiplexed as a receiving coil for wireless charging, the need for additionally installing a receiving coil is eliminated, the wireless charging system design of the vehicle is simplified, the system integration is improved, and the weight of the whole vehicle is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy electric vehicles, and relates to a motor winding multiplexing wireless charging device and method. BACKGROUND

[0002] In the current field of wireless charging technology for electric vehicles, a prominent problem is the design complexity of the charging system. Specifically, to implement wireless charging functionality, vehicles typically require an additional receiving coil installed at the bottom. This configuration not only increases the weight of the vehicle, but also reduces the integration level of the entire charging system due to the addition of extra components. In addition, in order to connect the receiving coil to the vehicle's battery system, a series of additional wiring harnesses and interfaces need to be arranged. The presence of these wiring harnesses and interfaces not only increases the physical volume of the system, but also can cause complexity in wiring management, increasing the risk of failure.

[0003] This design method also presents challenges in manufacturing and maintenance. The additional hardware increases the manufacturing cost of the vehicle, and the complex wiring requirements increase the technical difficulty and time consumption of assembly and maintenance. In addition, these external components can have a negative impact on the aerodynamic characteristics of the vehicle, affecting the performance and range of the vehicle. In practical applications, the precise alignment of the receiving coil is also crucial for efficient energy transmission, which is particularly difficult in dynamic charging scenarios. SUMMARY

[0004] The purpose of the present application is to provide a motor winding multiplexing wireless charging device and method to solve the problem of additional installation of receiving coils and connection of wiring harnesses in existing wireless charging systems for electric vehicles, resulting in increased vehicle weight and low system integration.

[0005] To achieve the above-mentioned purpose, the following technical solutions are adopted.

[0006] A motor winding multiplexing wireless charging device, comprising: a metal protective cover, an opening and closing support rod, a motor stator winding, a wireless communication module, and a motor controller;

[0007] The metal protective cover is arranged outside the protective motor stator winding to protect the motor stator winding;

[0008] The opening and closing support rod connects the metal protective cover to control the opening and closing of the metal protective cover;

[0009] The motor stator winding is electrically connected to the motor controller to serve as a receiving coil for wireless charging;

[0010] The wireless communication module is electrically connected to the motor controller to perform wireless communication with the communication module of the ground wireless charging pile;

[0011] The motor controller is electrically connected with the battery, for controlling the receiving and rectification of electric energy to charge the battery, and realizing the process of wireless charging through data exchange with the wireless communication module.

[0012] Optionally, the wireless charging pile comprises a lifting mechanism at the bottom, a charging pile transmitting coil and the communication module, the communication module is used for wireless communication with the wireless communication module, the charging pile transmitting coil is arranged on the lifting mechanism, and the motor stator winding is matched with the charging pile transmitting coil.

[0013] Optionally, the metal protective cover comprises a first protective cover and a second protective cover, and the opening and closing struts are arranged on the first protective cover and the second protective cover respectively, and the opening and closing struts are used for supporting the first protective cover and the second protective cover to be opened to both sides.

[0014] Optionally, the motor controller is connected with the battery through a low-voltage wire harness, for realizing real-time monitoring of the charging state of the battery.

[0015] Optionally, the cooling system comprises an oil pump, a cooling oil pipe and a heat exchanger, the oil pump is connected with the heat exchanger through the cooling oil pipe, and the cooling system is used for cooling the motor stator winding.

[0016] Optionally, the motor controller comprises a temperature control unit, the temperature control unit comprises a temperature sensor, the temperature sensor is used for monitoring the temperature signal of the motor stator winding, and the motor controller controls the oil pump according to the temperature signal.

[0017] Optionally, the heat exchanger is further provided with a battery heating module, for heating the battery by residual heat.

[0018] Optionally, the direct-current bus and a three-phase wire harness are further comprised, the motor controller is connected with the motor stator winding through the three-phase wire harness, and the motor controller is connected with the battery through the direct-current bus, for transmitting the rectified electric energy to the battery.

[0019] Optionally, the wireless charging pile further comprises a position automatic docking module, for automatically positioning and docking the position of the motor stator winding after the vehicle is parked.

[0020] A motor winding multiplexing wireless charging method comprises the following steps:

[0021] The wireless communication module is used for communicating with the wireless charging pile to confirm the charging state;

[0022] The motor controller controls the opening and closing struts to open the metal protective cover, so that the charging pile transmitting coil is aligned with the motor stator winding.

[0023] Receive electric energy from the transmitting coil through the motor stator winding;

[0024] Rectify the electric energy through the motor controller and charge to the battery;

[0025] After completing the charging, the motor controller controls the opening and closing of the support rod to close the metal protective cover.

[0026] Compared with the prior art, the present application has the following beneficial effects:

[0027] 1、The present application uses the motor coil as the receiving coil of wireless charging, which eliminates the need for additional installation of receiving coils, simplifies the design of the wireless charging system of the vehicle, and improves the system integration. Since the additional receiving coil and the connection harness are eliminated, the present application helps to reduce the weight of the whole vehicle and improve the performance and energy efficiency of the electric vehicle.

[0028] 2、The present application reduces the number of connection lines and interfaces with the battery, simplifies the interface design of the charging system, and reduces the complexity and failure rate of the system.

[0029] 3、The present application uses the motor stator temperature sensor and the cooling system in cooperation, which can effectively control the temperature of the motor winding during charging, and avoid the reduction of charging efficiency caused by temperature rise.

[0030] 4、The battery heating module of the heat exchanger of the present application uses the heat derived from the cooling of the motor winding to heat the battery in a low temperature state, which improves the charging speed, especially in a low temperature environment, and this function has a significant effect on improving the charging performance.

[0031] 5、The present application provides physical protection for the motor stator winding through the design of the opening and closing support rod and the metal protective cover, which prevents damage from foreign objects and improves the safety of the charging system.

[0032] 6、The present application can automatically identify the parking of the vehicle and adjust the position through the position automatic docking module of the wireless charging pile, which realizes the automation of the charging process and improves the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a structure schematic diagram of an embodiment of the motor winding multiplexing wireless charging device of the present application.

[0034] Figure 2 It is a structure schematic diagram of an open state of an embodiment of the motor winding multiplexing wireless charging device of the present application.

[0035] Figure 3 It is a structure schematic diagram of a charging state of an embodiment of the motor winding multiplexing wireless charging device of the present application.

[0036] Figure 4 This is a flowchart illustrating an embodiment of a wireless charging method for reusing motor windings according to the present invention.

[0037] Among them, 1-metal protective cover, 2-opening and closing support rod, 3-motor stator winding, 4-wireless communication module, 5-motor controller, 6-wireless charging pile, 7-lifting mechanism, 8-charging pile transmitting coil, 9-communication module, 10-low voltage wiring harness, 11-oil pump, 12-cooling oil pipe, 13-heat exchanger, 14-temperature sensor, 15-battery, 16-DC bus, 17-three-phase wiring harness. Detailed Implementation

[0038] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0039] The following detailed description is exemplary and intended to provide further detailed explanation of the invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention.

[0040] Example 1

[0041] like Figures 1-3 As shown, a wireless charging device for reusing motor windings includes: a metal protective cover 1, an opening and closing support rod 2, a motor stator winding 3, a wireless communication module 4, and a motor controller 5. The metal protective cover 1 is disposed on the outside of the motor stator winding 3 to protect it. The opening and closing support rod 2 is connected to the metal protective cover 1 and is used to control the opening and closing of the metal protective cover 1. The motor stator winding 3 is electrically connected to the motor controller 5 and serves as a receiving coil for wireless charging. The wireless communication module 4 is electrically connected to the motor controller 5 and is used to wirelessly communicate with the communication module 9 of a wireless charging pile 6 on the ground. The motor controller 5 is electrically connected to a battery 15 and is used to control the reception and rectification of electrical energy to charge the battery 15, as well as to realize the wireless charging process through data exchange with the wireless communication module 4.

[0042] Specifically, the metal protective cover 1 is used to protect the motor stator winding 3 from external damage and shield external magnetic fields during wireless charging. The opening and closing support rod 2 is connected to the metal protective cover 1 and is used to control the opening and closing of the metal protective cover 1 to facilitate the alignment of the transmitting coil of the wireless charging pile 6 with the motor stator winding 3. The motor stator winding 3 not only bears the electrical function of the motor during operation but also serves as a receiving coil for wireless charging to receive electrical energy from the wireless charging pile 6. The wireless communication module 4 is used for wireless communication with the communication module 9 of the wireless charging pile 6 on the ground to coordinate the charging process and exchange charging status information. The motor controller 5 is used to control the reception and rectification of electrical energy, convert the received alternating current into direct current, and charge the battery 15, while exchanging data with the wireless communication module 4 to realize the monitoring and management of the charging process.

[0043] Specifically, the opening and closing support rod 2 can be driven by a servo motor to ensure smooth opening and closing of the metal protective cover 1 and provide precise position feedback to ensure accurate alignment during charging.

[0044] Specifically, the motor stator winding 3 is designed as a multi-strand coil.

[0045] During charging, the motor controller 5 is also responsible for monitoring the status of the entire charging system, including the temperature of the motor stator winding 3, charging current and voltage, etc., to ensure charging safety and efficiency. The motor controller 5 can also provide real-time updates of the charging status to the user or charging service provider through the wireless communication module 4.

[0046] In addition, the device can also include a status indication system, such as an LED indicator or display screen, to visually display the charging status to the user, including charging progress, remaining time, battery 15 status, etc.

[0047] The motor winding multiplexing wireless charging device of the present application not only improves system integration and reduces vehicle weight, but also realizes automation and intelligentization of the charging process through intelligent control and wireless communication technology, providing a safe, convenient and efficient charging solution for users.

[0048] As a preferred example, the wireless charging pile 6 includes a lifting mechanism 7 at the bottom, a charging pile transmitting coil 8 and a communication module 9. The communication module 9 is used for wireless communication with the wireless communication module 4. The charging pile transmitting coil 8 is arranged on the lifting mechanism 7, and the motor stator winding 3 is matched with the charging pile transmitting coil 8.

[0049] Specifically, the bottom lifting mechanism 7 is used to adjust the height and position of the charging pile transmitting coil 8 to adapt to different vehicle models and charging scenarios; the charging pile transmitting coil 8 is arranged on the lifting mechanism 7 and is used to transmit energy and perform energy transmission with the motor stator winding 3; the communication module 9 cooperates with the wireless communication module 4 on the vehicle body to realize information interaction between the charging pile and the electric vehicle. Specifically, the wireless charging pile 6 further includes a control system, and after the communication module 9 receives the signal of the wireless communication module 4, the signal is transmitted to the control system, and the control system controls the lifting mechanism 7 and the charging pile transmitting coil 8.

[0050] Specifically, the lifting mechanism 7 can be hydraulic or electric, which can accurately control the vertical movement and positioning of the charging pile transmitting coil 8, and ensure the alignment accuracy between the transmitting coil and the motor stator winding 3, thereby maximizing the energy transmission efficiency.

[0051] Specifically, the charging pile transmitting coil 8 can adopt a multi-layer winding design to enhance the coupling strength of the electromagnetic field and improve the energy transmission efficiency. The material selection and winding process of the transmitting coil are optimized to improve its electrical performance and thermal stability.

[0052] Specifically, in order to realize more efficient wireless charging, the matching between the motor stator winding 3 and the charging pile transmitting coil 8 includes but is not limited to: adjusting the distance between the transmitting coil and the receiving coil to optimize the magnetic field coupling; adjusting the load characteristics of the motor stator winding 3 through the motor controller 5 to adapt to the working state of the transmitting coil; using the wireless communication module 4 to exchange information, dynamically adjusting the output frequency and power of the transmitting coil to adapt to the electrical parameters of the motor stator winding 3.

[0053] During the charging process, the motor controller 5 sends a feedback signal to the charging pile communication module 9 through the wireless communication module 4 according to the received electric energy and the battery 15 charging state, and the charging pile communication module 9 adjusts the working parameters of the transmitting coil accordingly to realize closed-loop control.

[0054] Through the above implementation, the wireless charging pile 6 can efficiently interact with the electric vehicle in terms of energy and information, realize the automation and intelligentization of the wireless charging system, and improve the convenience and safety of charging.

[0055] As a preferred example, the metal protective cover 1 includes a first protective cover and a second protective cover, and the opening and closing support rod 2 has two groups respectively arranged on the first protective cover and the second protective cover, and the opening and closing support rod 2 is used to support the first protective cover and the second protective cover to the two sides.

[0056] Specifically, the opening and closing support rod 2 is an electric actuator connected to the motor controller 5 through electrical connection. The support rod is designed to automatically open and close the metal protective cover 1 to facilitate the alignment and energy transmission between the transmitting coil of the wireless charging pile 6 and the motor stator winding 3. The opening and closing support rod 2 includes but is not limited to electric push rod, servo motor, stepper motor or linear motor, etc., which can accurately control the extension and contraction of the support rod. One end of the support rod is fixedly connected to the metal protective cover 1, and the other end is connected to the motor controller 5 through electrical lines.

[0057] In the charging preparation stage, the motor controller 5 sends instructions to the opening and closing support rod 2, and the support rod responds to the instructions to drive the metal protective cover 1 to open, exposing the motor stator winding 3 for wireless charging. After charging is completed, the motor controller 5 sends instructions again, and the support rod drives the metal protective cover 1 to close, protecting the motor stator winding 3 from external influences.

[0058] Through the above implementation, the opening and closing support rod 2 provides an automatic and controllable way to manage the opening and closing state of the metal protective cover 1, thereby optimizing the wireless charging process and improving the intelligent level of the entire charging system and user convenience.

[0059] As a preferred example, the motor controller 5 is connected to the battery 15 through the low-voltage wire harness 10 for real-time monitoring of the charging state of the battery 15.

[0060] Specifically, it includes but is not limited to the indication of the battery 15 charging level, current, voltage, temperature and any fault or abnormal state.

[0061] Specifically, in terms of real-time monitoring of the charging state, the motor controller 5 executes the corresponding control strategy according to the received data. For example, if the temperature of the battery 15 is monitored to exceed the preset threshold, the motor controller 5 can adjust the charging current or suspend the charging process until the temperature drops to a safe level. Similarly, if an abnormal charging voltage is detected, the motor controller 5 can also take appropriate measures, such as adjusting the output of the transmitting coil or notifying the user to check the wireless charging pile 6.

[0062] As a preferred example, a cooling system is also included, which includes an oil pump 11, a cooling oil pipe 12 and a heat exchanger 13, the oil pump 11 being connected to the heat exchanger 13 through the cooling oil pipe 12, the cooling system being used for cooling the motor stator winding 3.

[0063] Specifically, the cooling system is designed to control the temperature of the motor stator winding 3 during the wireless charging process to improve the charging efficiency and prevent overheating. The cooling system is a closed circulation system including one or more oil pumps 11, cooling oil pipes 12 and at least one heat exchanger 13.

[0064] Specifically, the oil pump 11 is the heart of the cooling system, responsible for driving the circulation of cooling medium such as insulating oil or special coolant in the system. The oil pump 11 can be a gear pump, centrifugal pump or screw pump, etc., according to the required flow and pressure to select the appropriate pump type. The cooling oil pipe 12 is a channel connecting the oil pump 11 and the heat exchanger 13, which can be made of metal or temperature-resistant plastic, with sufficient temperature resistance and pressure resistance. The cooling oil pipe 12 is designed to withstand the pressure and temperature changes of the cooling medium during circulation. The heat exchanger 13 is used to transfer the heat generated by the motor stator winding 3 to the cooling medium, so that the cooling medium is heated up, while the temperature of the motor stator winding 3 is reduced. The heat exchanger 13 can be a tube-shell, plate or micro-channel type, etc., according to the heat exchange efficiency and space requirements.

[0065] The cooling system can also include one or more cooling fans or cooling units to assist the heat exchanger 13 in dissipating heat and improving cooling efficiency.

[0066] Through the above implementation, the cooling system provides an effective thermal management solution for the motor winding multiplex wireless charging device, ensuring the safety and reliability of the charging process, while improving the charging efficiency and the service life of the battery 15.

[0067] During the charging process, the motor controller 5 monitors the temperature of the motor stator winding 3, and when the temperature is detected to exceed the preset threshold, the motor controller 5 starts the oil pump 11, and the cooling medium starts to circulate in the system. The cooling medium flows through the cooling channel of the motor stator winding 3, absorbs heat and flows to the heat exchanger 13, where the heat is transferred to the external environment or the cooling medium.

[0068] As a preferred example of the above example, the motor controller 5 includes a temperature control unit, which includes a temperature sensor 14 for monitoring the temperature signal of the motor stator winding 3, and the motor controller 5 controls the oil pump 11 according to the temperature signal.

[0069] Specifically, the motor controller 5 is the intelligent management core of the device, responsible for receiving and processing signals from the temperature sensor 14, and controlling the operating state of the oil pump 11 accordingly, to achieve precise control of the temperature of the motor stator winding 3.

[0070] Specifically, the temperature control unit is a software and / or hardware module within the motor controller 5, which analyzes and processes the data provided by the temperature sensor 14 according to the preset temperature control strategy. This unit can use PID proportional-integral-derivative control algorithm or other advanced control algorithms to achieve dynamic adjustment of the start-stop and speed of the oil pump 11.

[0071] The temperature sensor 14 is installed near or integrated in the motor stator winding 3, which can monitor and provide real-time temperature data of the motor stator. These data are transmitted to the motor controller 5 through wired or wireless means.

[0072] When the temperature sensor 14 detects that the temperature of the motor stator exceeds the preset safety threshold, the temperature control unit will start the oil pump 11 to activate the cooling system. The operating speed of the oil pump 11 can be adjusted according to the degree of temperature rise to provide appropriate cooling flow. Conversely, when the temperature drops within the safety range, the operating speed of the oil pump 11 can be reduced or even stopped completely to save energy.

[0073] The motor controller 5 can also work with the wireless communication module 4 to send temperature data and cooling system status information to a remote monitoring system or user interface, enabling remote monitoring and diagnosis.

[0074] Through the above implementation, an intelligent cooling control mechanism based on real-time temperature feedback is provided, which not only improves the charging safety and reliability of the motor winding multiplexing wireless charging device, but also optimizes energy efficiency and prolongs the service life of the motor and the battery 15.

[0075] As a preferred example, the heat exchanger 13 is also provided with a battery heating module for heating the battery 15 by waste heat.

[0076] Specifically, the motor winding multiplexing wireless charging device includes a heat exchanger 13, which is not only used for cooling the motor stator winding 3, but also integrates a battery heating module. The design of the heat exchanger 13 allows part of the heat generated by the motor stator winding 3 to be directed to the battery heating module while the heat is transferred to the cooling oil pipe 12, thereby utilizing the waste heat to provide heating for the battery 15.

[0077] During charging, the motor controller 5 monitors the temperature of the motor stator winding 3 through the temperature sensor 14. When it is detected that the temperature of the motor stator winding 3 reaches or exceeds the preset threshold, the motor controller 5 starts the oil pump 11, and the oil is delivered to the heat exchanger 13 for heat exchange. Inside the heat exchanger 13, the heat generated by the motor stator winding 3 is transferred to the oil, and after the oil is heated, part of it flows to the cooling oil pipe 12 to cool the motor stator winding 3, while the other part flows to the battery heating module to heat the battery 15.

[0078] In practical applications, the battery heating module of the heat exchanger 13 can be used in cooperation with other battery management systems BMS to achieve more accurate temperature control and battery health management. Through this integrated design, the present application not only improves the system integration of the wireless charging device, but also improves the charging efficiency, while providing additional benefits for the maintenance and life management of the battery 15.

[0079] As a preferred example, a DC bus 16 and a three-phase cable 17 are also included, through which the motor controller 5 connects the motor stator winding 3, and through which the motor controller 5 connects the battery 15 for transmitting rectified electrical energy to the battery 15.

[0080] Specifically, the DC bus 16 serves as a centralized transmission path for electrical energy, connecting the motor controller 5 and the battery 15, ensuring that the rectified electrical energy can be efficiently and stably transmitted to the battery 15. The design of the DC bus 16 takes into account the efficiency and safety of electrical energy transmission, and appropriate electrical insulation and protection measures are adopted to prevent short circuits and overloads.

[0081] The motor controller 5 has rectification function, which can effectively convert the alternating current energy received through the three-phase cable 17 into direct current energy suitable for charging the battery 15. The rectification process involves power electronic conversion technology, such as using a rectifier bridge or other types of rectifiers to convert alternating current to direct current. In addition, the motor controller 5 can also include filters and voltage stabilizers to ensure that the electrical energy received by the battery 15 is smooth and stable.

[0082] During charging, the motor controller 5 monitors the charging status of the battery 15, including voltage, current and temperature parameters, to optimize the charging process and protect the battery 15 from overcharging or overheating. The motor controller 5 communicates with the battery management system BMS through the DC bus 16, which is responsible for monitoring and managing the charging cycle of the battery 15, ensuring the health of the battery 15 and prolonging its service life.

[0083] As a preferred example, the wireless charging pile 6 also includes a position automatic docking module for automatically positioning the position of the motor stator winding 3 after the vehicle is parked.

[0084] The design of the position automatic docking module aims to improve the convenience and accuracy of wireless charging, ensuring charging efficiency and reducing user operation steps.

[0085] The position automatic docking module includes but is not limited to the following technologies or their combinations:

[0086] Visual recognition system: using cameras or image sensors to capture the features of the vehicle, such as license plate number, vehicle model or specific markers, to identify the vehicle and determine its precise position.

[0087] Wireless communication system: using the wireless communication module built-in the vehicle to communicate with the wireless charging pile 6, exchanging vehicle position information and charging requirements.

[0088] Infrared or ultrasonic sensors: measure the distance and angle between the wireless charging station 6 and the vehicle by emitting and receiving infrared or ultrasonic signals, achieving precise positioning.

[0089] Electromagnetic induction system: uses electromagnetic induction principles to determine the relative positions of the vehicle and the charging station through electromagnetic field interaction between them.

[0090] The workflow of the automatic position docking module is as follows:

[0091] Vehicle enters the charging area: when the vehicle enters the preset charging area, the automatic position docking module is activated.

[0092] Vehicle identification: the module identifies the vehicle through a visual recognition system or a wireless communication system and obtains basic information about the vehicle.

[0093] Position detection: the module uses infrared, ultrasonic, or electromagnetic induction sensors to detect the precise position of the vehicle and its relative attitude to the charging station.

[0094] Position adjustment: based on the detected position information, the lifting mechanism 7 of the wireless charging station 6 automatically adjusts the position and height to ensure that the transmitting coils of the charging station are aligned with the motor stator windings 3 on the vehicle.

[0095] Charging docking confirmation: after the transmitting coils of the charging station are correctly aligned with the motor stator windings 3, the wireless communication module communicates with the motor controller 5 of the vehicle to confirm that the charging docking is successful.

[0096] Start charging: once the charging docking is successful, the wireless charging station 6 starts the energy transmission process and begins wireless charging.

[0097] The design of the automatic position docking module allows the wireless charging station 6 to be compatible with different types of vehicles, including different models and different manufacturers of electric vehicles. In addition, the module can also work with the vehicle's automatic parking system to achieve a fully automatic charging process.

[0098] Example 2

[0099] As shown in Figure 4 A motor winding multiplexing wireless charging method includes the following steps:

[0100] Confirm the charging status through the wireless communication module 4 and the wireless charging station 6;

[0101] Specifically, after the vehicle stops in the charging area, the motor wireless communication module 4 is automatically activated and establishes a wireless communication connection with the communication module 9 of the wireless charging station 6. Through this connection, the wireless charging station 6 sends a charging preparation instruction, and the vehicle replies with charging preparation confirmation information.

[0102] The motor controller 5 controls the opening and closing of the support rod 2 to open the metal protective cover 1, so that the charging pile transmitting coil 8 is aligned with the motor stator winding 3;

[0103] Specifically, after receiving the charging preparation confirmation information, the motor controller 5 sends a control signal to the opening and closing support rod 2 to open the metal protective cover 1, ensuring that there is a direct wireless energy transmission path between the wireless charging pile 6 transmitting coil and the motor stator winding 3.

[0104] The distance between the charging pile transmitting coil 8 and the motor stator winding 3 can be adjusted by the lifting mechanism 7.

[0105] The motor stator winding 3 receives electrical energy from the transmitting coil;

[0106] Specifically, the motor stator winding 3 acts as a wireless energy receiver.

[0107] The motor controller 5 rectifies the electrical energy and charges the battery 15;

[0108] Specifically, the motor controller 5 converts alternating current into direct current suitable for charging the battery 15. The rectified direct current energy is transmitted to the battery 15 through the DC bus 16, and the battery management system BMS controls the charging process to ensure safe and efficient charging of the battery 15.

[0109] As a preferred example, during the charging process, the motor stator winding 3 temperature is monitored by the temperature control unit, and when the temperature threshold is reached, the cooling system is started to cool the motor stator winding 3;

[0110] Specifically, during the charging process, the motor controller 5 continuously monitors the temperature of the motor stator winding 3. When the temperature detected by the temperature sensor 14 reaches or exceeds the preset safety threshold, the motor controller 5 starts the cooling system to cool the motor stator winding 3 through the cooling oil pipe 12 to circulate the cooling liquid, so as to maintain it within the safe temperature range.

[0111] After completing the charging, the motor controller 5 controls the opening and closing of the support rod 2 to close the metal protective cover 1.

[0112] After the battery 15 is fully charged, the BMS sends a charging completion signal to the motor controller 5, and the motor controller 5 then sends a signal to the opening and closing support rod 2 to close the metal protective cover 1, completing the charging process. After the charging is completed, the motor wireless communication module 4 is disconnected from the communication module 9 of the wireless charging pile 6, ending this charging session.

[0113] It is apparent that the application can be carried out by those skilled in the art without departing from the spirit of the application, which can be realized not only by the embodiments revealed herein but also by any of the alternatives constructed on the basis of the principle of this application. Therefore, the disclosed embodiments are only intended to illustrate the application, and not restrictive. Any change, equivalent, or improvement made within the spirit and principle of the application should be covered by the application.

Claims

1. A motor winding multiplexing wireless charging device, characterized in that, Comprise: Metal protective cover (1), open and close support rod (2), motor stator winding (3), wireless communication module (4) and motor controller (5); The metal protective cover (1) is arranged outside the motor stator winding (3), which is used for protecting the motor stator winding (3); The open and close support rod (2) is connected with the metal protective cover (1), which is used for controlling the opening and closing of the metal protective cover (1); The motor stator winding (3) is electrically connected with the motor controller (5), and the motor stator winding (3) is used as a receiving coil for wireless charging; The wireless communication module (4) is electrically connected with the motor controller (5), and the wireless communication module (4) is used for wireless communication with the communication module (9) of the wireless charging pile (6) on the ground; The motor controller (5) is electrically connected with the battery (15), and the motor controller (5) is used for controlling the reception and rectification of electric energy to charge the battery (15), and realizing the process of wireless charging through data exchange with the wireless communication module (4).

2. The apparatus of claim 1, wherein, The wireless charging pile (6) comprises a lifting mechanism (7) at the bottom, a charging pile transmitting coil (8) and the communication module (9), the communication module (9) is used for wireless communication with the wireless communication module (4), the charging pile transmitting coil (8) is arranged on the lifting mechanism (7), and the motor stator winding (3) is matched with the charging pile transmitting coil (8).

3. The apparatus of claim 1, wherein, The metal protective cover (1) comprises a first protective cover and a second protective cover, the open and close support rod (2) has two groups arranged on the first protective cover and the second protective cover respectively, and the open and close support rod (2) is used for supporting the first protective cover and the second protective cover to the two sides.

4. The apparatus of claim 1, wherein, The motor controller (5) is connected with the battery (15) through a low-voltage wire harness (10), and is used for monitoring the charging state of the battery (15) in real time.

5. The apparatus of claim 1, wherein, Further comprising a cooling system, the cooling system comprises an oil pump (11), a cooling oil pipe (12) and a heat exchanger (13), the oil pump (11) is connected with the heat exchanger (13) through the cooling oil pipe (12), and the cooling system is used for cooling the motor stator winding (3).

6. The apparatus of claim 5, wherein, The motor controller (5) comprises a temperature control unit, and the temperature control unit comprises a temperature sensor (14) used for monitoring the temperature signal of the motor stator winding (3).

7. The apparatus of claim 5, wherein, The heat exchanger (13) is further provided with a battery heating module, which is used for heating the battery (15) by waste heat.

8. The apparatus of claim 1, wherein, Further comprising a direct current bus (16) and a three-phase wire harness (17), the motor controller (5) is connected with the motor stator winding (3) through the three-phase wire harness (17), and the motor controller (5) is connected with the battery (15) through the direct current bus (16), which is used for transmitting the rectified electric energy to the battery (15).

9. The apparatus of claim 2, wherein, The wireless charging pile (6) further comprises a position automatic docking module, which is used for automatically positioning and docking the position of the motor stator winding (3) after identifying that the vehicle is parked.

10. A motor winding multiplexing wireless charging method based on the motor winding multiplexing wireless charging device of any one of claims 1 to 9, characterized in that, Comprise the following steps: Through the wireless communication module (4) and the wireless charging pile (6) communication, confirm the charging state; The motor controller (5) controls the open-close strut (2) to open the metal protective cover (1), so that the charging pile transmitting coil (8) is aligned with the motor stator winding (3); Through the motor stator winding (3) to receive the electric energy from the transmitting coil; Through the motor controller (5) to rectify the electric energy and charge to the battery (15); After completing the charging, the motor controller (5) controls the open-close strut (2) to close the metal protective cover (1).

Images