Ex-service power battery-based electric vehicle charging system, method and terminal

Abstract

The invention provides an ex-service power battery-based electric vehicle charging system, method and terminal, and the method comprises the steps: taking each ex-service power battery as an energy storage module, and monitoring the health state and charge state of each ex-service power battery in real time through a battery monitoring unit of a monitoring module; the monitoring module is used for monitoring the charging condition of each charging coil of the charging module of the electric vehicle in real time through a charging position monitoring unit of the monitoring module, so that the control module controls each retired power battery to supply power to each charging coil to charge the electric vehicle; therefore, the echelon utilization of the decommissioned power battery is realized, the life cycle of the decommissioned power battery is effectively prolonged, the processing pressure of the decommissioned power battery is relieved, the service content of the convenient service station is enriched, the energy storage cost of the convenient service station is reduced, and the energy utilization rate is improved.

Description

Technical Field

[0001] The present application relates to the field of energy management technology, and in particular to an electric vehicle charging system, method and terminal based on retired power batteries. Background Art

[0002] In recent years, as the number of electric vehicles in the world continues to rise, the problem of handling retired power batteries has become increasingly severe. However, when electric vehicle power batteries are retired, they still retain 70-80% of their initial capacity. Although they cannot meet the power needs of electric vehicles, they can still be used in energy storage, backup power supplies, communication base stations and other fields after testing, disassembly and reorganization to achieve cascade utilization. Therefore, the market potential and value of retired power batteries are still huge. However, the existing cascade utilization of retired power batteries has low energy utilization rate, resulting in a large waste of resources.

[0003] At the same time, as an important carrier of community services, convenience service stations are gradually developing in the direction of multi-function and intelligence, which can provide residents with more convenient life services. However, existing convenience service stations usually use a large number of energy storage batteries, which are very costly. Summary of the invention

[0004] In view of the shortcomings of the prior art mentioned above, the purpose of the present application is to provide an electric vehicle charging system, method and terminal based on retired power batteries, which are used to solve the technical problems of low energy utilization of existing retired power batteries and high energy storage costs of convenience service stations.

[0005] To achieve the above and other related objectives, a first aspect of the present application provides an electric vehicle charging system based on retired power batteries. The electric vehicle charging system based on retired power batteries includes: a power input module for providing electrical energy; a energy storage module including a plurality of retired power batteries, each of which is electrically connected to the power input module; an electric vehicle charging module including a plurality of charging positions arranged in a convenience service station, with a charging coil disposed below each charging position, and each charging coil is electrically connected to each retired power battery respectively for charging an electric vehicle at the corresponding charging position; a monitoring module including a battery monitoring unit and a charging position monitoring unit; wherein the battery monitoring unit is connected to each retired power battery respectively for real-time monitoring of the health status and state of charge of each retired power battery and generating battery monitoring data of each retired power battery; the charging position monitoring unit is connected to each charging coil respectively for real-time monitoring of the working state and charging situation of each charging coil and generating charging monitoring data of each charging coil; a control module that is communicatively connected to the power input module, the energy storage module, the electric vehicle charging module, and the monitoring module respectively, for controlling the power input module to charge each retired power battery according to the battery monitoring data of each retired power battery, and obtaining one or more idle charging positions according to the charging monitoring data of each charging coil. After an electric vehicle enters a designated charging position, the control module controls each retired power battery to supply power to the charging coil at this charging position to charge the electric vehicle.

[0006] In some embodiments of the first aspect of the present application, the power input module includes: a mains unit that is electrically connected to each retired power battery respectively and communicatively connected to the control module for providing alternating current mains power transmitted from the urban public power grid to charge each retired power battery; a non-mains unit that is electrically connected to each retired power battery respectively and communicatively connected to the control module. The non-mains unit includes a solar charging sub-unit and a wind energy charging sub-unit, which are respectively used to convert the absorbed solar energy and wind energy into direct current to charge each retired power battery.

[0007] In some embodiments of the first aspect of the present application, the energy storage module further includes: an electric energy conversion unit, which includes: a rectifier and an inverter; wherein, each retired power battery is electrically connected to the mains unit through the rectifier, and the rectifier is used to convert the alternating current of the mains unit into direct current of a specified specification and store it in each retired power battery; each retired power battery is electrically connected to each charging coil through the inverter, and the inverter is used to convert the direct current stored in each retired power battery into alternating current to supply power to each charging coil; an electric energy distribution unit, which is electrically connected to each retired power battery and the inverter respectively, and is communicatively connected to the control module, and is used to distribute the electric energy of each retired power battery to supply power to each charging coil.

[0008] In some embodiments of the first aspect of the present application, the control module controls each retired power battery to supply power to the charging coil at this charging position to charge the electric vehicle in the following manner: according to the charging monitoring data of each charging coil, obtain one or more idle charging positions, and guide the electric vehicle into the specified charging position; after the electric vehicle enters the specified charging position, connect the charging coil at this charging position to the charging circuit of the electric vehicle, and obtain the charging demand of the electric vehicle; according to the charging demand of the electric vehicle, control the electric energy distribution unit to distribute electric energy from each retired power battery, and convert the direct current stored in each retired power battery into alternating current through the inverter to supply power to the corresponding charging coil to charge the electric vehicle; monitor the working state and charging situation of this charging coil in real time through the charging position monitoring unit, and after this charging coil completes the charging of the electric vehicle, disconnect the charging coil from the charging circuit of the electric vehicle.

[0009] In some embodiments of the first aspect of the present application, the monitoring module further includes: a service station environment monitoring unit, which is arranged at the edge of each charging position and is used to monitor the charging environment in the convenience service station in real time and generate corresponding environment monitoring data; the service station environment monitoring unit includes: one or a combination of a visual sensor, a depth sensor, a voice collection device, a temperature sensor, a humidity sensor, a smoke detector, and a water level monitoring device.

[0010] In some embodiments of the first aspect of the present application, the electric vehicle charging system based on retired power batteries further includes: a communication module, which is communicatively connected to the control module and communicatively connected to an external operation management center, and is configured to send the battery monitoring data of each retired power battery generated by the battery monitoring unit, the charging monitoring data of each charging coil generated by the charging position monitoring unit, and the environmental monitoring data generated by the service station environmental monitoring unit to the operation management center, so that the staff of the convenience service station can monitor the electric vehicle charging system based on retired power batteries through the operation management center and remotely control each retired power battery and each charging coil.

[0011] In some embodiments of the first aspect of the present application, the electric vehicle charging system based on retired power batteries further includes: an electricity charge settlement module, which is communicatively connected to the control module and communicatively connected to an electricity charge settlement terminal through the communication module, and is configured to enable the electric vehicle owner to settle the electric vehicle charging fee through the electricity charge settlement terminal.

[0012] In some embodiments of the first aspect of the present application, the electric vehicle charging system based on retired power batteries further includes: a charging prompt module, which includes: a voice prompt device installed in the convenience service station and configured to voice prompt the charging information of the charging coils at each charging position; a display device installed in the convenience service station and configured to display the charging information of the charging coils at each charging position.

[0013] To achieve the above object and other related objects, the second aspect of the present application provides an electric vehicle charging method based on retired power batteries, which is applied to the electric vehicle charging system based on retired power batteries according to any one of the above embodiments. The method includes: real-time monitoring the health status and state of charge of each retired power battery through the battery monitoring unit and generating the battery monitoring data of each retired power battery; real-time monitoring the working status and charging condition of each charging coil through the charging position monitoring unit and generating the charging monitoring data of each charging coil; controlling, by the control module, the power input module to charge each retired power battery according to the battery monitoring data of each retired power battery, and obtaining one or more idle charging positions according to the charging monitoring data of each charging coil. After the electric vehicle enters the charging position, controlling each retired power battery to supply power to the charging coil at this charging position to charge the electric vehicle.

[0014] To achieve the above and other related objectives, a third aspect of the present application provides an electric vehicle charging terminal based on retired power batteries. The electric vehicle charging terminal based on retired power batteries includes: a processor and a memory; the memory is used to store computer programs; the processor is used to execute the computer programs stored in the memory, so that the terminal realizes the functions of the electric vehicle charging system based on retired power batteries as described in any one of the above embodiments.

[0015] As described above, the present application provides an electric vehicle charging system, method and terminal based on retired power batteries. By using each retired power battery as an energy storage module, and the battery monitoring unit of the monitoring module monitors the health status and state of charge of each retired power battery in real time, so that the control module controls the power input module to charge each retired power battery. The charging situation of each charging coil of the electric vehicle charging module is monitored in real time by the charging position monitoring unit of the monitoring module, so that the control module controls each retired power battery to supply power to each charging coil to charge the electric vehicle. Therefore, the present application has the following beneficial effects: not only realizes the cascade utilization of retired power batteries, effectively extends the life cycle of retired power batteries, alleviates the processing pressure of retired power batteries, but also enriches the service content of convenience service stations, reduces the energy storage cost of convenience service stations, improves the energy utilization rate, and solves the technical problems of low energy utilization rate of retired power batteries and large energy storage cost of convenience service stations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It shows a schematic structural diagram of an electric vehicle charging system based on retired power batteries in an embodiment of the present application.

[0017] Figure 2 It shows a schematic connection diagram of an electric vehicle charging system based on retired power batteries and an external system in an embodiment of the present application.

[0018] Figure 3 It shows a schematic installation diagram of a partial structure of an electric vehicle charging system based on retired power batteries in an embodiment of the present application.

[0019] Figure 4 It shows a schematic flow diagram of an electric vehicle charging method based on retired power batteries in an embodiment of the present application.

[0020] Figure 5 It shows a schematic structural diagram of an electric vehicle charging terminal based on retired power batteries in an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following describes the implementation manners of the present application through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0022] The convenient service station is a grass-roots station that integrates multiple public service functions to meet the daily life needs of residents, provides convenient, diversified and personalized public services to residents, and is widely established in areas such as communities and streets, greatly improving the convenience of residents' lives. The convenient service station usually has a function module for charging electric vehicles.

[0023] To solve the problems in the above background technology, the present invention provides an electric vehicle charging system, method and terminal based on retired power batteries, aiming to supply power to the electric vehicle charging module by using each retired power battery for the energy storage module of the convenient service station, so as to charge the electric vehicle, solve the technical problems of low energy utilization rate of existing retired power batteries and high energy storage cost of the convenient service station, not only realize the cascade utilization of retired power batteries, but also reduce the energy storage cost of the convenient service station and improve the energy utilization rate.

[0024] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be further described in detail through the following embodiments in combination with the drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the invention.

[0025] As Figure 1 shown, a structural schematic diagram of an electric vehicle charging system based on retired power batteries in an embodiment of the present invention is shown. The electric vehicle charging system based on retired power batteries in this embodiment is arranged in the convenient service station and is used to charge electric vehicles. The electric vehicle charging system based on retired power batteries includes: a power input module, an energy storage module, an electric vehicle charging module, a monitoring module and a control module.

[0026] Among them, the energy storage module is communicatively connected to the control module and includes: a plurality of retired power batteries. It should be noted that, for the sake of simplicity, Figure 1 only a single retired power battery is schematically shown, but it does not limit that the energy storage module described in the present application only includes a single retired power battery.

[0027] The power input module is communicatively connected to the control module and is used to provide power for each retired power battery.

[0028] In one embodiment, as Figure 1 shown, the electric energy input module includes: a mains power unit and a non-mains power unit. Among them, the mains power unit and the non-mains power unit are respectively electrically connected to each retired power battery and are respectively communicatively connected to the control module. The mains power unit is used to provide alternating current mains power transmitted by the urban public power grid to charge each retired power battery. The non-mains power unit includes: a solar charging sub-unit and a wind energy charging sub-unit, which are respectively used to convert the absorbed solar energy and wind energy into direct current to charge each retired power battery.

[0029] In a specific embodiment, as Figure 1 shown, the energy storage module further includes an electric energy conversion unit, and the electric energy conversion unit includes a rectifier. The mains power unit is electrically connected to each retired power battery through the rectifier. The rectifier can convert the alternating current mains power of the mains power unit into direct current of a specified specification and store it in each retired power battery, so as to charge each retired power battery.

[0030] The electric vehicle charging module is communicatively connected to the control module and includes: a plurality of charging positions arranged in a convenience service station, and a charging coil is arranged below each charging position. Specifically, each charging coil is electrically connected to each retired power battery and is respectively used to charge an electric vehicle at the corresponding charging position. It should be noted that, for the sake of simplicity, Figure 1 only a single charging coil is shown, but it does not limit that the electric vehicle charging module described in this application only includes a single charging coil.

[0031] In a specific embodiment, the electric energy conversion unit of the energy storage module further includes: an inverter. Each charging coil is electrically connected to each retired power battery through the inverter. The inverter can convert the direct current stored in each retired power battery into alternating current to supply power to each charging coil.

[0032] As Figure 1 shown, the monitoring module is communicatively connected to the control module and includes: a battery monitoring unit. The battery detection unit is respectively connected to each retired power battery and is used to monitor the health status and state of charge of each retired power battery in real time and generate battery monitoring data of each retired power battery, so that the control module can control the electric energy input module to charge each retired power battery according to the battery monitoring data of each retired power battery.

[0033] In one embodiment, the method for the control module to control the electric energy input module to charge each retired power battery according to the battery monitoring data of each retired power battery includes the following steps.

[0034] ① The battery detection unit calculates the state of charge of each retired power battery in real time, and when the state of charge of a retired power battery is less than a preset first state-of-charge threshold, it determines whether the non-mains unit in the power input module has the power transmission ability.

[0035] In one embodiment, the method for calculating the state of charge of the energy storage unit is shown in formula (1).

[0036] SOC = Q now / Q new × 100%; (1)

[0037] Wherein, SOC is the state of charge of each retired power battery; Q new is the rated battery capacity of each retired power battery in a fully charged state; Q now is the remaining battery capacity of each retired power battery at present.

[0038] In a preferred embodiment, the first state-of-charge threshold is set to 100%. It should be noted that the present application does not limit the specific value of the first state-of-charge threshold, and the user can set it according to needs.

[0039] ② If the non-mains unit still has the power transmission ability, it controls the direct current provided by the non-mains unit to be transmitted to each retired power battery to be charged for storage, so as to charge each retired power battery to be charged until the state of charge of all retired power batteries is equal to the preset first state-of-charge threshold, or the non-mains unit no longer has the power transmission ability.

[0040] ③ If the non-mains unit does not have the power transmission ability, it controls the alternating current provided by the mains unit to be transmitted to the rectifier of the power conversion unit, and the rectifier converts the alternating current into direct current of a specified specification and transmits it to each retired power battery to be charged for storage, so as to charge each retired power battery to be charged until the state of charge of all retired power batteries is equal to the preset first state-of-charge threshold.

[0041] In this embodiment, the control module preferentially selects the non-mains unit to charge each retired power battery, which can effectively utilize clean energy, thereby improving energy utilization efficiency, avoiding energy waste, and being beneficial to reducing environmental pollution and achieving green energy conservation.

[0042] Moreover, when selecting the mains unit to charge each retired power battery, it is preferably carried out during the off-peak electricity period at night to achieve the purpose of reducing electricity costs and balancing the mains electricity load.

[0043] In one embodiment, when the state of charge of a retired power battery drops to a preset second state-of-charge threshold, the mains unit is directly controlled to charge the retired power battery. Preferably, the second state-of-charge threshold is set to 20%, that is, when the state of charge of a retired power battery drops to 20%, the mains unit is controlled to charge the retired power battery to make up for the power gap of the retired power battery and ensure the normal charging demand of the electric vehicle.

[0044] As Figure 1 shown, the monitoring module further includes: a charging position monitoring unit. The charging position monitoring unit is respectively connected to each charging coil, and is used to monitor the working state and charging condition of each charging coil in real time, generate charging monitoring data of each charging coil, so that the control module can obtain one or more idle charging positions according to the charging monitoring data of each charging coil. After the electric vehicle enters the designated charging position, each retired power battery is controlled to supply power to the charging coil unit at this charging position to charge the electric vehicle.

[0045] Specifically, the charging position monitoring unit can monitor the real-time current, voltage, temperature, etc. of each charging coil in real time, and judge whether each charging coil is working normally and the charging condition of each charging coil through the real-time current, voltage and temperature of each charging coil, so as to judge the charging condition of the corresponding charged electric vehicle and whether the charging is over.

[0046] In one embodiment, the way that the control module controls each retired power battery to supply power to the charging coil at this charging position to charge the electric vehicle includes the following steps.

[0047] ① According to the charging monitoring data of each charging coil, obtain one or more idle charging positions and guide the electric vehicle into the designated charging position.

[0048] ② After the electric vehicle enters the designated charging position, connect the charging coil at this charging position to the charging circuit of the electric vehicle and obtain the charging demand of the electric vehicle.

[0049] ③ According to the charging demand of the electric vehicle, control each retired power battery to convert the direct current stored in each retired power battery into alternating current through the inverter to supply power to the corresponding charging coil to charge the electric vehicle.

[0050] In one embodiment, the energy storage module further includes: an electric energy distribution unit. The electric energy distribution unit is electrically connected to each retired power battery and the inverter respectively, and is communicatively connected to the control module, and is used to allocate the electric energy of each retired power battery according to the electricity storage conditions of each retired power battery to supply power to each charging coil. Specifically, the electric energy distribution unit can intelligently allocate the electric energy of retired power batteries with different electric quantities according to the charging requirements of each electric vehicle, including: remaining power, battery specifications, required power, etc., to more efficiently utilize the electric energy of each retired power battery and improve the energy utilization rate.

[0051] Thus, in this embodiment, the control module controls the electric energy distribution unit to allocate electric energy from each retired power battery according to the charging requirements of the electric vehicle, and converts the direct current stored in each retired power battery into alternating current through the inverter to supply power to the corresponding charging coil to charge the electric vehicle.

[0052] ④ The charging position monitoring unit monitors the working state and charging condition of the charging coil in real time. After the charging coil completes the charging of the electric vehicle, the charging circuit between the charging coil and the electric vehicle is disconnected.

[0053] The charging position monitoring unit can monitor the working state and charging condition of each charging coil in real time, so as to be able to monitor the charging condition of the corresponding electric vehicle being charged in real time. After the charging is completed, the state of current input is automatically cut off, and the charging circuit between the charging coil and the electric vehicle is disconnected.

[0054] In one embodiment, as Figure 1 shown, the monitoring module further includes: a service station environment monitoring unit. The service station environment monitoring unit is arranged at the edge of each charging position and is used to monitor the charging environment in the convenience service station in real time and generate corresponding environment monitoring data.

[0055] Specifically, the service station environment monitoring unit includes: one or a combination of a visual sensor, a depth sensor, a voice collection device, a temperature sensor, a humidity sensor, a smoke detector, and a water level monitoring device. As Figure 3 shown, the service station environment monitoring unit can be installed on the lamp post of the smart street lamp beside each charging position in the convenience service station.

[0056] Among them, the visual sensor can be a camera, which is used to monitor the conditions of each charging position and the vehicle state of the electric vehicle in real time. The depth sensor can be a radar, which is used to monitor the obstacle conditions of each charging position in real time. The voice collection device can be a pick-up microphone, which is used to monitor in real time whether there are fault, collision or alarm abnormal noises on the electric vehicles at each charging position. The smoke detector can be used to monitor in real time whether there is a fault fire risk on the electric vehicles at each charging position. The water level detection device is used to monitor the water level of each charging position in real time, so as to monitor whether there is a fault water flooding risk at each charging position.

[0057] Thus, in this embodiment, the service station environment monitoring unit can assist the charging position monitoring unit to judge the idle state of each charging position, and whether each charging position contains foreign objects, pedestrians, and whether there are risk factors. Until the staff eliminates the faults, it guides the electric vehicle to enter an idle and safe charging position for charging.

[0058] This application utilizes retired power batteries as energy storage modules and integrates the wireless charging service of electric vehicles into the convenience service station. It not only effectively extends the life cycle of retired power batteries and alleviates the processing pressure of retired power batteries, but also enriches the service content of the convenience service station, meets the residents' needs for safe, convenient and efficient charging services, and further improves the community service level. At the same time, it also reduces the energy storage cost of the convenience service station, improves the energy utilization rate, generates significant social, economic and environmental benefits, and helps to build a green, low-carbon, intelligent and convenient future society.

[0059] In one embodiment, as Figure 2 shown, the electric vehicle charging system based on retired power batteries further includes: a communication module. The communication module is communicatively connected to the control module and is communicatively connected to an external operation and management center, and is used to send the battery monitoring data of each retired power battery generated by the battery monitoring unit, the charging monitoring data of each charging coil generated by the charging position monitoring unit, and the environmental monitoring data generated by the service station environment monitoring unit to the operation and management center, so that the staff of the convenience service station can monitor the electric vehicle charging system based on retired power batteries through the operation and management center and remotely control each retired power battery and each charging coil.

[0060] Specifically, the control module can send early warning information to the external operation and management center through the communication module according to various types of monitoring data. The specific method includes the following steps.

[0061] ① Calculate the health state of each retired power battery in real time through the battery detection unit, and when the health state of a retired power battery is less than the health threshold, send a battery health early warning information to the external operation and management center through the communication module, so that the staff of the convenience service station can replace the retired power battery.

[0062] In one embodiment, the calculation formula for the state of health of each retired power battery is as follows:

[0063] SOH = C n / C0 × 100%; (2)

[0064] where SOH is the state of health of each retired power battery; C0 is the initial battery capacity of each retired power battery at the time of retirement, that is, the amount of electricity that each retired power battery can store under specific test conditions at the time of retirement; C n is the current actual available capacity of each retired power battery, that is, the amount of electricity that each current retired power battery can store under the same test conditions.

[0065] When the state of health of a retired power battery drops to the health threshold, it is considered that the performance of the retired power battery has significantly declined and a new retired power battery needs to be replaced.

[0066] In a preferred embodiment, the health threshold is set to 80%. It should be noted that the present application does not limit the specific size of the health threshold, and the user can set it according to needs.

[0067] ② The working states of the charging coils are monitored in real time by the charging position monitoring unit, and when the working state of a charging coil is abnormal, a charging coil warning message is sent to the external operation management center through the communication module.

[0068] ③ The charging environment in the convenience service station is monitored in real time by the service station environment monitoring unit, and when a risk factor is identified, an environment warning message is sent to the external operation management center through the communication module.

[0069] In this embodiment, the electric vehicle charging system based on retired power batteries can timely send a warning message through the communication module, enabling the staff in the convenience service station to intervene in time, eliminate risk factors, and ensure the stability and safety of the system and even the convenience service station.

[0070] In one embodiment, as Figure 2 shown, the electric vehicle charging system based on retired power batteries further includes: an electricity charge settlement module. The electricity charge settlement module is communicatively connected to the control module and communicatively connected to the electricity charge settlement terminal through the communication module, and is used for the electric vehicle owner to settle the electric vehicle charging cost through the electricity charge settlement terminal.

[0071] Specifically, the electricity charge settlement terminal can be a mobile terminal such as a mobile phone, a tablet computer, or a computer, which is connected to the electricity charge settlement module of the system through the communication module, facilitating the electric vehicle owners to independently settle the charging fees of electric vehicles. Preferably, the electricity charge settlement terminal can also obtain the charging information of each charging coil through the communication module, so as to obtain charging queue waiting information, electric vehicle charging progress status information, etc., and intelligently master the charging information of electric vehicles.

[0072] In one embodiment, as Figure 2 shown, the electric vehicle charging system based on retired power batteries further includes: a charging prompt module. The charging prompt module includes: a voice prompt device and a display device respectively installed in the convenience service station.

[0073] In a specific embodiment, the voice prompt device includes a speaker, and the display device includes an LED display screen. The voice prompt device and the display device can not only prompt the charging information of each charging coil, but also play background music, policies and regulations, terms of use, advertising information, and various types of warning information, and display the corresponding policies and regulations, terms of use, advertising information, and various types of warning information on the LED display screen, so as to convey various types of rich information to the owners of electric vehicles.

[0074] And, as Figure 3 shown, the charging prompt module such as the speaker and the LED display screen can be installed on the lamp post of the smart street lamp beside each charging position in the convenience service station.

[0075] It should be understood that the division of modules and units in the embodiments of the present application is schematic, only a logical function division, and there may be other division methods in actual implementation. In addition, in each embodiment of the present application, each functional module and each functional unit can be integrated in one processor, or can exist independently physically, or two or more modules or units can be integrated in one module. The above integrated modules and units can be implemented in the form of hardware, or in the form of software functional modules and functional units.

[0076] As Figure 4 shown, a flowchart of a method for charging an electric vehicle based on retired power batteries in an embodiment of the present invention is shown. The method for charging an electric vehicle based on retired power batteries is applied to the electric vehicle charging system provided in the above embodiments.

[0077] The electric vehicle charging system based on retired power batteries at least includes: a power input module, an energy storage module, an electric vehicle charging module, a monitoring module, and a control module. Among them, the energy storage module includes: a plurality of retired power batteries, and each retired power battery is electrically connected to the power input module respectively. The electric vehicle charging module, the electric vehicle charging module includes: a plurality of charging positions arranged in a convenience service station, and a charging coil is arranged below each charging position, and each charging coil is electrically connected to each retired power battery respectively. The monitoring module includes: a battery monitoring unit respectively connected to each retired power battery and a charging position monitoring unit respectively connected to each charging coil. The control module is communicatively connected to the power input module, the energy storage module, the electric vehicle charging module, and the monitoring module respectively.

[0078] As Figure 4 shown, the electric vehicle charging method based on retired power batteries includes steps S1 to S3.

[0079] Step S1: The health status and state of charge of each retired power battery are monitored in real time through the battery monitoring unit, and battery monitoring data of each retired power battery is generated.

[0080] Step S2: The working status and charging condition of each charging coil are monitored in real time through the charging position monitoring unit, and charging monitoring data of each charging coil is generated.

[0081] Step S3: Through the control module, the power input module is controlled to charge each retired power battery according to the battery monitoring data of each retired power battery, and one or more idle charging positions are obtained according to the charging monitoring data of each charging coil. After the electric vehicle enters the charging position, each retired power battery is controlled to supply power to the charging coil of this charging position to charge the electric vehicle.

[0082] It should be understood that the electric vehicle charging method based on retired power batteries and the electric vehicle charging system based on retired power batteries belong to the same concept. The specific implementation process of each step has been described in detail in the above system embodiment. For the sake of brevity, it will not be repeated here.

[0083] The functions and implementation methods of the electric vehicle charging system based on retired power batteries provided in the embodiments of the present application can be implemented on the terminal side or the server side. Regarding the hardware structure of the electric vehicle charging terminal based on retired power batteries, please refer to Figure 5, which is an optional hardware structure diagram of the electric vehicle charging terminal 500 based on retired power batteries provided by an embodiment of the present invention. The electric vehicle charging terminal 500 based on retired power batteries may be a mobile phone, a computer device, a tablet device, a personal digital processing device, a factory background processing device, etc. The electric vehicle charging terminal 500 based on retired power batteries includes: at least one processor 501, a memory 502, at least one network interface 504, and a user interface 506. Moreover, each component in the electric vehicle charging terminal 500 based on retired power batteries is coupled together through a bus system 505. It can be understood that the bus system 505 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 505 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear illustration, in Figure 5 all kinds of buses are labeled as the bus system. The user interface 506 may include a display, a keyboard, a mouse, a trackball, a click gun, a key, a button, a touchpad, or a touch screen, etc.

[0084] It can be understood that the memory 502 may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. This application does not specifically limit it. The memory 502 in the embodiment of the present invention is used to store various types of data to support the operation of the electric vehicle charging terminal 500 based on retired power batteries. Examples of these data include: any executable program for operating on the electric vehicle charging terminal 500 based on retired power batteries, such as an operating system 5021 and an application program 5022; the operating system 5021 contains various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application program 5022 may include various application programs, such as a MediaPlayer, a Browser, etc. The method for implementing the functions of the electric vehicle charging system based on retired power batteries provided by the embodiment of the present invention may be included in the application program 5022.

[0085] The implementation method of the electric vehicle charging system based on retired power batteries disclosed in the above embodiments of the present invention can be applied to the processor 501 or implemented by the processor 501. The processor 501 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the implementation method of the above system can be completed by the integrated logic circuit in the hardware of the processor 501 or the instructions in the form of software. The above-mentioned processor 501 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 501 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor 501 may be a microprocessor or any conventional processor, etc.

[0086] In an exemplary embodiment, the electric vehicle charging terminal 500 based on retired power batteries may be one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs) for performing the foregoing speaker voiceprint recognition method.

[0087] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to a computer program. The foregoing computer program may be stored in a computer-readable storage medium. When the program is executed, it executes the steps including the above method embodiments; and the foregoing storage medium includes: various media such as ROM, RAM, magnetic disk or optical disk that can store program codes.

[0088] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all of them should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0089] In summary, the present application provides an electric vehicle charging system, method and terminal based on retired power batteries. By using each retired power battery as an energy storage module, and through the battery monitoring unit of the monitoring module to monitor the health status and state of charge of each retired power battery in real time, so that the control module can control the power input module to charge each retired power battery. By using the charging position monitoring unit of the monitoring module to monitor the charging situation of each charging coil of the electric vehicle charging module in real time, so that the control module can control each retired power battery to supply power to each charging coil to charge the electric vehicle. Therefore, the present application has the following beneficial effects: It not only realizes the cascade utilization of retired power batteries, effectively extends the life cycle of retired power batteries, alleviates the treatment pressure of retired power batteries, but also enriches the service content of the convenience service station, reduces the energy storage cost of the convenience service station, improves the energy utilization rate, and solves the technical problems of low energy utilization rate of retired power batteries and large energy storage cost of the convenience service station.

[0090] Therefore, the present application effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0091] The above embodiments are only illustrative of the principles and effects of the present application and are not intended to limit the present application. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present application should still be covered by the claims of the present application.

Claims

1. An electric vehicle charging system based on retired power batteries, characterized in that, Comprising: An electric energy input module for providing electric energy; An energy storage module including a plurality of retired power batteries, each of which is electrically connected to the electric energy input module; An electric vehicle charging module including a plurality of charging positions arranged in a convenience service station, with a charging coil disposed below each charging position, and each charging coil is electrically connected to each retired power battery respectively for charging an electric vehicle at the corresponding charging position; A monitoring module including a battery monitoring unit and a charging position monitoring unit; wherein, the battery monitoring unit is respectively connected to each retired power battery for real-time monitoring of the health state and charge state of each retired power battery and generating battery monitoring data of each retired power battery; the charging position monitoring unit is respectively connected to each charging coil for real-time monitoring of the working state and charging condition of each charging coil and generating charging monitoring data of each charging coil; A control module is respectively communicatively connected to the electric energy input module, the energy storage module, the electric vehicle charging module and the monitoring module, and is used for controlling the electric energy input module to charge each retired power battery according to the battery monitoring data of each retired power battery, and obtaining one or more idle charging positions according to the charging monitoring data of each charging coil. After an electric vehicle enters a designated charging position, it controls each retired power battery to supply power to the charging coil at this charging position to charge the electric vehicle.

2. The electric vehicle charging system based on retired power batteries according to claim 1, wherein The electric energy input module includes: A mains unit which is respectively electrically connected to each retired power battery and communicatively connected to the control module, and is used for providing alternating current mains power transmitted from the urban public power grid to charge each retired power battery; A non-mains unit which is respectively electrically connected to each retired power battery and communicatively connected to the control module. The non-mains unit includes a solar charging sub-unit and a wind energy charging sub-unit, which are respectively used for converting the absorbed solar energy and wind energy into direct current to charge each retired power battery.

3. The electric vehicle charging system based on retired power batteries according to claim 2, wherein The energy storage module further includes: An electric energy conversion unit including a rectifier and an inverter; wherein, each retired power battery is respectively electrically connected to the mains unit through the rectifier, and the rectifier is used for converting the alternating current mains power of the mains unit into direct current of a specified specification and storing it in each retired power battery; each retired power battery is respectively electrically connected to each charging coil through the inverter, and the inverter is used for converting the direct current stored in each retired power battery into alternating current to supply power to each charging coil; An electric energy distribution unit which is respectively connected to each retired power battery and the inverter and communicatively connected to the control module, and is used for distributing the electric energy of each retired power battery to supply power to each charging coil.

4. The electric vehicle charging system based on retired power batteries according to claim 3, wherein The way that the control module controls each retired power battery to supply power to the charging coil at this charging position to charge the electric vehicle includes: Obtain one or more idle charging positions based on the charging monitoring data of each charging coil, and guide the electric vehicle into the designated charging position; After the electric vehicle enters the designated charging position, connect the charging coil of this charging position to the charging circuit of the electric vehicle, and obtain the charging demand of the electric vehicle; According to the charging demand of the electric vehicle, control the power distribution unit to distribute electric energy from each retired power battery, and convert the direct current stored in each retired power battery into alternating current through the inverter to supply power to the corresponding charging coil for charging the electric vehicle; Real-time monitor the working state and charging condition of the charging coil through the charging position monitoring unit. After the charging coil completes the charging of the electric vehicle, disconnect the charging coil from the charging circuit of the electric vehicle.

5. The electric vehicle charging system based on retired power batteries according to claim 1, characterized in that The monitoring module further includes: A service station environment monitoring unit, which is arranged at the edge of each charging position and is used to monitor the charging environment in the convenience service station in real time and generate corresponding environment monitoring data; the service station environment monitoring unit includes: one or a combination of a visual sensor, a depth sensor, a voice acquisition device, a temperature sensor, a humidity sensor, a smoke detector, and a water level monitoring device.

6. The electric vehicle charging system based on retired power batteries according to claim 5, characterized in that, It further includes: A communication module, which is communicatively connected to the control module and communicatively connected to an external operation and management center, and is used to send the battery monitoring data of each retired power battery generated by the battery monitoring unit, the charging monitoring data of each charging coil generated by the charging position monitoring unit, and the environment monitoring data generated by the service station environment monitoring unit to the operation and management center, so that the staff of the convenience service station can monitor the electric vehicle charging system based on retired power batteries through the operation and management center and remotely control each retired power battery and each charging coil.

7. The electric vehicle charging system based on retired power batteries according to claim 6, characterized in that, It further includes: An electricity fee settlement module, which is communicatively connected to the control module and communicatively connected to an electricity fee settlement terminal through the communication module, and is used for the electric vehicle owner to settle the charging fee of the electric vehicle through the electricity fee settlement terminal.

8. The electric vehicle charging system based on retired power batteries according to claim 1, wherein, It further includes: A charging prompt module, and the charging prompt module includes: A voice prompt device, which is installed in the convenience service station and is used to voice prompt the charging information of the charging coils at each charging position; A display device, which is installed in the convenience service station and is used to display the charging information of the charging coils at each charging position.

9. An electric vehicle charging method based on retired power batteries, characterized in that, Applied to the electric vehicle charging system based on retired power batteries according to any one of claims 1 to 8, the method includes: Real-time monitor the health state and state of charge of each retired power battery through the battery monitoring unit, and generate the battery monitoring data of each retired power battery; Real-time monitor the working state and charging condition of each charging coil through the charging position monitoring unit, and generate the charging monitoring data of each charging coil; Through the control module, control the power input module to charge each retired power battery according to the battery monitoring data of each retired power battery, and obtain one or more idle charging positions according to the charging monitoring data of each charging coil. After the electric vehicle enters the charging position, control each retired power battery to supply power to the charging coil of this charging position for charging the electric vehicle.

10. An electric vehicle charging terminal based on retired power batteries, characterized in that, Comprising: a processor and a memory; the memory is used for storing a computer program; the processor is used for executing the computer program stored in the memory, so that the terminal realizes the functions of the electric vehicle charging system based on retired power batteries according to any one of claims 1 to 8.

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