VES virtual energy bank based on the aging process of energy modules

Abstract

This invention belongs to the field of lithium-ion battery manufacturing technology and discloses a VES virtual energy storage system (VES) based on the energy module aging process. The VES includes an NCE energy module, an IPB iterative plug-in bin for connecting and disconnecting the NCE energy module, a stacking conveyor for transporting the NCE energy module, an EIP insertion platform located on both sides of the stacking conveyor, and a VEC virtual energy storage control box. The NCE energy module is equipped with first positive and negative aviation plugs and a first CAN communication aviation plug. This invention is used to create an energy storage system for work-in-process during the aging process of lithium-ion battery manufacturing, significantly reducing storage space and energy storage system investment.

Description

Technical Field

[0001] The present invention belongs to the technical field of lithium-ion battery manufacturing, and relates to a VES virtual energy bank based on the working condition aging process of an energy module. Background Art

[0002] At present, the manufacturing process of lithium-ion batteries at home and abroad is complicated, lengthy and highly homogenized, resulting in huge waste of manpower, material resources, financial resources and energy. If the annual output of 1Gwh of lithium-ion batteries is calculated, the electricity consumption in the production process is about 45 million kWh, and the production cost remains high. In the traditional lithium-ion battery manufacturing process, the final aging process of the battery is generally to be charged and kept stationary in a discrete state for 7 days or even longer for observation, and then grouped and PACKed. The waste of resources in the aging process is huge and is very unfavorable for the development of a low-carbon economy. Therefore, it is of great significance to this field to establish a VES virtual power bank to control the energy storage of the battery during the battery aging process. Summary of the Invention

[0003] The purpose of the present invention is to provide a VES virtual energy bank based on the aging process of energy modules, which achieves high efficiency, low energy consumption and low cost in the lithium-ion battery manufacturing process and promotes the development of a low-carbon economy.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] A VES virtual energy bank based on the working condition aging process of an energy module includes an NCE energy module, an IPB iterative plug-in bin for plugging in or out of the NCE energy module, a stacking conveyor for transporting the NCE energy module, an EIP embedding platform arranged on both sides of the stacking conveyor, and a VEC virtual energy bank control box; the NCE energy module is provided with a first positive and negative aviation plug and a first CAN communication aviation plug;

[0006] The stacking conveyor includes an upper horizontal guide rail and a lower horizontal guide rail arranged in parallel, a longitudinal support rod traveling on the upper horizontal guide rail and the lower horizontal guide rail, and an ASM automatic stacking robot traveling up and down on the longitudinal support rod;

[0007] The EIP embedded platform is a steel frame structure, the upper part of the steel frame structure is used for array embedded IPB iterative plug-in bins, and the lower part of the steel frame structure is used for array embedded VEC virtual power storage control boxes;

[0008] Each of the IPB iterative plug-in compartments is provided with a base for horizontally placing the NCE energy module, a second positive and negative aviation plug that is directly plugged into or disconnected from the first positive and negative aviation plugs on the NCE energy module, and a second CAN communication aviation plug that is directly plugged into or disconnected from the first CAN communication aviation plug;

[0009] The VEC virtual power bank control box includes a PLC controller and a virtual power bank control circuit for receiving the working instructions of the PLC controller to simulate the working condition charging and discharging energy storage and power peak regulation of the NCE energy module. The virtual power bank control circuit is electrically connected to the second positive and negative aviation plugs of the IPB iterative plug-in warehouse, and the PLC controller is electrically connected to the second CAN communication aviation plug of the IPB iterative plug-in warehouse, the virtual power bank control circuit, and the ASM automatic stacking robot.

[0010] The NCE energy module is a work-in-progress in the static aging process during the lithium battery manufacturing process.

[0011] As a limitation, the virtual power bank control circuit in each VEC virtual power bank control box array-mounted at the lower part of the EIP embedded platform is electrically connected to the NCE energy module in the IPB iterative plug-in compartment of the corresponding column.

[0012] As a second limitation, the ASM automatic palletizing robot is equipped with a CCD industrial imaging automatic positioning system.

[0013] As a third limitation, the EIP embedded platform is installed and fixed on the cement floor embedded parts by fasteners.

[0014] As a fourth limitation, the virtual power bank control circuit includes a transformer, an AC mains isolator, an AC local capacitor compensator, an AC local power grid, an AC local power grid isolator, a PCS bidirectional energy storage converter, an AC local AC appliance isolator, a PWM full-power switch, and a DC bus;

[0015] One end of the AC mains isolator is connected to the low-voltage side of the transformer, and the other end is connected to the AC local power grid; the high-voltage side of the transformer is connected to the mains high-voltage power grid; the AC local capacitance compensator is connected to the AC local power grid; one end of the AC local AC electrical appliance isolator is connected to the AC local power grid, and the other end is connected to the AC electrical appliance;

[0016] One end of the AC local power grid isolator is connected to the AC local power grid, and the other end is respectively connected to one end of several PCS bidirectional energy storage converters. The other end of each PCS bidirectional energy storage converter is connected to one end of the PWM full-power switch and the negative pole of the second positive and negative aviation plug of the IPB iterative plug-in compartment group. The positive pole of the second positive and negative aviation plug of the IPB iterative plug-in compartment group is connected to one end of the PWM full-power switch. The negative pole of the NCE energy module and the other end of the PWM full-power switch both provide power transmission to DC electrical appliances through the DC bus.

[0017] The IPB iterative plug-in bin group is composed of at least one IPB iterative plug-in bin connected in series; the output end of the PLC controller is connected to the AC local power grid;

[0018] The PWM full-power switch is a pulse width modulator, which is used to achieve no-load safe switching when the NCE energy module is iterated according to process requirements.

[0019] As a fifth limitation, the AC mains isolator includes a first isolating switch, a first bidirectional meter, a first contactor, and a first circuit breaker. The first isolating switch is connected to the transformer, and the first circuit breaker is connected to the AC local power grid.

[0020] As a sixth limitation, the AC local power grid isolator includes a second isolating switch, a second bidirectional meter, a second contactor, and a second circuit breaker. The second isolating switch is connected to the AC local power grid, and the second circuit breaker is respectively connected to one end of several PCS bidirectional energy storage converters.

[0021] As a seventh limitation, the AC local electrical appliance isolator includes a third isolating switch, a third bidirectional meter, a third contactor, and a third circuit breaker. The third isolating switch is connected to the AC local power grid, and the third circuit breaker is connected to the AC electrical appliance.

[0022] As an eighth limitation, the AC local power grid adopts an AC380 three-phase four-wire system.

[0023] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared with the prior art:

[0024] (1) Compared with the traditional situation, NCE energy modules, that is, the work-in-progress in the static aging process during the lithium battery manufacturing process, are only left in a discrete state to observe the changes in their voltage and power after charging. The VES virtual power bank based on the working condition aging process of the energy module provided by the present invention can quickly plug and unplug the NCE energy module in series and parallel through the IPB iterative plug-in warehouse to simulate the working condition charging and discharging energy storage. Through the charging and discharging working condition control of electric energy storage and power peak regulation, it greatly saves storage area and energy storage battery investment;

[0025] (2) The present invention connects the NCE energy modules in series and parallel through the IPB iterative plug-in warehouse, and controls the NCE energy modules for charging and discharging energy storage through the VEC virtual power storage control box, which can save electricity costs and balance electricity by utilizing the valley electricity of the high-voltage power grid, i.e., the AC mains electricity;

[0026] (3) The virtual power bank control circuit of the present invention not only enables the NCE energy module to be safely inserted into or removed from the IPB iterative plug-in compartment in an iterative manner, thus avoiding safety accidents caused by current out of control, but also improves efficiency, reduces energy consumption, reduces investment, reduces costs, and is safe and reliable;

[0027] (4) The present invention is suitable for large-scale industrial production and popularization and application.

[0028] The present invention belongs to the technical field of lithium-ion battery manufacturing, and is used to create an energy storage reservoir for work-in-progress during the aging process of lithium-ion battery manufacturing, thereby saving energy and reducing emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Shown is a schematic structural diagram of an embodiment of the present invention;

[0030] Figure 2 Shown is a side view of an embodiment of the present invention;

[0031] Figure 3 FIG. 2 is a circuit diagram of a control circuit according to an embodiment of the present invention.

[0032] In the figure: 1. EIP embedded platform; 2. IPB iterative plug-in warehouse; 3. NCE energy module; 4. ASM automatic palletizing robot; 5. VEC virtual power storage control box; 6. Upper horizontal guide rail; 7. Lower horizontal guide rail; 8. Longitudinal support rod; 9. AC mains isolator; 10. AC local capacitor compensator; 11. AC local power grid; 12. AC local power grid isolator; 13. PCS bidirectional energy storage converter; 14. AC local AC electrical appliance isolator; 15. PWM full-power switch; 16. DC bus; 17. Transformer. DETAILED DESCRIPTION

[0033] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0034] Example A VES virtual energy bank based on the aging process of energy modules

[0035] like Figure 1 and Figure 2 As shown, this embodiment includes an NCE energy module (No cell energy module) 3, an IPB iterative plug box 2 for connecting to or disconnecting from the NCE energy module 3, a stacking conveyor for transporting the NCE energy module 3, an EIP embedded installation platform 1 and a VEC virtual electric storage control box 5 arranged on both sides of the stacking conveyor; wherein, the NCE energy module 3 is provided with a first positive and negative aviation plug and a first CAN communication aviation plug, the NCE energy module 3 is a work-in-progress in the static aging process during the lithium battery manufacturing process, and in this embodiment, the NCE energy module 3 is a lithium battery; the EIP embedded installation platform 1 is installed and fixed on the cement floor embedded parts by using bolts.

[0036] The stacking conveyor includes parallel upper and lower horizontal guide rails 6 and 7, longitudinal support rods 8 that travel on these rails, and an ASM automatic stacking manipulator 4 that travels up and down on the longitudinal support rods 8. The longitudinal support rods 8 are frame-structured. The ASM automatic stacking manipulator 4 is equipped with a CCD industrial imaging automatic positioning system. The upper and lower horizontal guide rails 6 and 7, along with the longitudinal support rods 8, enable the ASM automatic stacking manipulator 4 to move in multiple degrees of freedom, including forward, backward, left, right, up, and down, and 360° rotation. The CCD industrial imaging automatic positioning system allows for convenient, accurate, and efficient insertion and removal of the NCE energy module 3 from the IPB iterative insertion compartment 2. In this embodiment, the ASM automatic palletizing robot 4 is an automatic mechanical device that can automatically grasp, transport or operate according to instructions. The palletizing conveyor includes an upper horizontal guide rail 6, a lower horizontal guide rail 7, and a longitudinal support rod 8. The ASM automatic palletizing robot 4 can move in multiple degrees of freedom, front and back, left and right, up and down, and rotate 360°. It is an existing structure and will not be described in detail.

[0037] The EIP embedded platform 1 is a steel frame structure with its lower end fixed on the embedded parts of the cement floor. The upper part of the steel frame structure is used for array-type embedded IPB iterative plug-in bins 2, and the lower part of the steel frame structure is used for array-type embedded VEC virtual power storage control boxes 5.

[0038] In this embodiment, a total of 160 IPB iterative plug-in bins 2 are embedded in an array in the EIP embedding platform 1 arranged on both sides of the palletizing conveyor, with eight in each column and a total of twenty columns. Each IPB iterative plug-in bin 2 is installed on the upper part of the EIP embedding platform 1 by means of bolt embedding. Each IPB iterative plug-in bin 2 is provided with a base for horizontally placing the NCE energy module 3, a second positive and negative aviation plug that is plugged in or disconnected from the first positive and negative aviation plugs of the NCE energy module 3, and a second CAN communication aviation plug that is plugged in or disconnected from the first CAN communication aviation plug of the NCE energy module 3. Among them, the NCE energy module 3 can be inserted into or removed from an IPB iterative plug-in bin 2 by the ASM automatic palletizing robot 4. The NCE energy module 3 is charged and discharged in series and parallel with the plug of the IPB iterative plug-in bin 2 to simulate working conditions for energy storage.

[0039] Ten VEC virtual battery control boxes 5 are embedded in an array on the EIP embedded platform 1 on each side, and each VEC virtual battery control box 5 is electrically connected to the NCE energy module 3 in the IPB iterative plug-in bin 2 in the corresponding column. Each VEC virtual battery control box 5 includes a PLC controller and a virtual battery control circuit for receiving the working instructions of the PLC controller, wherein the virtual battery control circuit is electrically connected to the NCE energy module 3 by being electrically connected to the second positive and negative aviation plugs of the IPB iterative plug-in bin 2, and the PLC controller is electrically connected to the second CAN communication aviation plug of the IPB iterative plug-in bin 2, the virtual battery control circuit, and the ASM automatic stacking robot 4. The PLC controller is connected to the second CAN communication aviation plug of the IPB iterative plug-in bin 2 to transmit collected data and control instructions.

[0040] like Figure 3 As shown, in this embodiment, the virtual power bank control circuit includes a transformer 17, an AC mains isolator 9, an AC local capacitor compensator 10, an AC local grid 11, an AC local grid isolator 12, a PCS bidirectional energy storage converter 13, an AC local AC appliance isolator 14, a PWM full-power switch 15, and a DC bus 16. Transformer 17 is a 380V transformer. AC local grid 11 uses an AC380 three-phase four-wire system.

[0041] One end of the AC mains isolator 9 is connected to the low-voltage side of a transformer 17, and the other end is connected to an AC local power grid 11. The high-voltage side of the transformer 17 is connected to the city's high-voltage power grid, i.e., the AC mains. The AC local capacitor compensator 10 is connected to the AC local power grid 11. One end of the AC local AC appliance isolator 14 is connected to the AC local power grid 11, and the other end is connected to an AC appliance. One end of the AC local power grid isolator 12 is connected to the AC local power grid 11, and the other end is connected to one end of several PCS bidirectional energy storage converters 13. The other end of each PCS bidirectional energy storage converter 13 is connected to one end of a PWM full-power switch 15 and the negative pole of the second positive and negative aviation plug of the IPB iterative plug-in unit 2. The positive pole of the second positive and negative aviation plug of the IPB iterative plug-in unit is connected to one end of the PWM full-power switch 15. The other ends of the IPB iterative plug-in unit and the PWM full-power switch 15 both provide power transmission to the DC appliances via a DC bus 16. In this embodiment, the IPB iterative plug-in unit group is composed of two IPB iterative plug-in units 2 connected in series; the output end of the PLC controller is connected to the AC local power grid 11.

[0042] In this embodiment, the AC mains isolator 9 includes a first isolating switch G1, a first bidirectional meter Q1, a first contactor KM1, and a first circuit breaker QF1, which are connected in sequence. The first isolating switch is connected to the transformer 17, and the first circuit breaker Q1 is connected to the AC local power grid 11. The PLC controller sends control commands to the AC mains isolator 9, controlling it to automatically isolate and connect the AC mains and the AC local power grid 11, perform bidirectional power metering, and perform fuse protection.

[0043] AC local grid isolator 12 includes a second isolating switch G2, a second bidirectional meter Q2, a second contactor KM2, and a second circuit breaker QF2, which are connected in sequence. The second isolating switch is connected to the AC local grid 11, and the second circuit breaker is connected to one end of a plurality of PCS bidirectional energy storage converters 13. A PLC controller sends control commands to the AC local grid isolator 12, causing it to automatically connect and isolate the PCS bidirectional energy storage converters 13, perform bidirectional energy metering, and perform fuse protection.

[0044] The AC local appliance isolator 14 includes a third isolating switch G3, a third bidirectional meter Q3, a third contactor KM3, and a third circuit breaker QF3, which are connected in sequence. The third isolating switch is connected to the AC local grid 11, and the third circuit breaker is connected to the AC appliances. The PLC controller sends control commands to the AC local appliance isolator 14, causing it to automatically connect and isolate the AC appliances, perform bidirectional energy metering, and provide fuse protection.

[0045] In this embodiment, the AC local capacitance compensator 10 is a standard product component and at least includes a fourth isolating switch G4, a fourth meter Q4, a fourth contactor KM4, a fuse QF4, a capacitor C, and an inductor L.

[0046] The working principle of this embodiment is as follows: first, the PLC controller in the VEC virtual power bank control box 5 sends instructions to control the ASM automatic stacking robot 4 to obtain the NCE energy module 3 in the process of high-temperature aging process from the NCE energy module 3 and send it to the corresponding IPB iterative plug-in warehouse 2. The first positive and negative aviation plugs and the first CAN communication aviation plug of the NCE energy module 3 are quickly plugged in and out of the second positive and negative aviation plugs and the second CAN communication aviation plug of the IPB iterative plug-in warehouse 2. After the aging process is completed through the virtual power bank control circuit, the PLC controller sends instructions to control the ASM automatic stacking robot 4 to remove the NCE energy module 3 from the IPB iterative plug-in warehouse 2 and send it to the next process. Then the ASM automatic stacking robot 4 re-obtains a new NCE energy module 3 and sends it to the corresponding IPB iterative plug-in warehouse 2 for iterative online operation. The NCE energy module 3 is quickly connected or disconnected with the IPB iterative plug-in warehouse 2 through the first positive and negative aviation plugs and the first CAN communication aviation plug. This is an iterative alternating process.

[0047] During the aging process of the NCE energy module 3 being quickly connected or disconnected with the IPB iterative plug-in compartment 2 through the first positive and negative aviation plugs and the first CAN communication aviation plug, the virtual power bank control circuit simulates the working conditions of charging and discharging energy storage and power peak regulation for the NCE energy module 3 according to the instructions sent by the PLC controller.

[0048] Among them, in the virtual power bank control circuit, since electricity at night is cheaper than electricity during the day, the PLC controller controls the virtual power bank control circuit to charge the NCE energy module 3 in the IPB iterative plug-in warehouse 2 at night to reduce energy consumption and reduce costs. When the NCE energy module 3 is charging, the AC mains isolator 9 receives the control instruction of the PLC controller and connects to the AC mains. The AC mains converts the high-voltage power supply into the required low-voltage power supply through the 380V transformer 17. The AC local power grid 11 is connected to the PCS bidirectional energy storage converter 13 through the AC local power grid isolator 12. Each PCS bidirectional energy storage converter 13 is connected to two IPB iterative plug-in warehouses 2 connected in series. The NCE energy module 3 in the IPB iterative plug-in warehouse 2 receives the power from the AC local power grid 11 through the PCS bidirectional energy storage converter 13 to charge and store energy.

[0049] During the day, when the NCE energy module 3 has sufficient power, the AC mains isolator 9 disconnects upon command from the PLC controller. The AC local grid isolator 12 and the AC local AC appliance isolator 14 connect upon command from the PLC controller. The NCE energy module 3 in the IPB iteration plug-in bay 2 inverts and feeds back power to the AC local grid 11 via the PCS bidirectional energy storage converter 13. The PWM full-power switch 15 controls the iterative insertion and removal of the IPB iteration plug-in bay 2 at full power, preventing current surges that could cause safety incidents. The AC local AC appliance isolator 14 connects to the AC local grid 11 to power the AC appliances.

[0050] Furthermore, during the day, when discharging the NCE energy module 3, the AC mains isolator 9, the AC local grid isolator 12, and the AC local AC appliance isolator 14 can also be disconnected upon command from the PLC controller. At this point, the NCE energy module 3 and the PWM full-power switch 15 in the IPB iterative plug-in bay 2 provide power to the DC appliances via the DC bus 16.

[0051] When the virtual power bank control circuit controls the NCE energy module 3 in the IPB iterative plug-in compartment 2 to charge and discharge, the AC local capacitor compensator 10 receives the control instruction of the PLC controller and automatically connects to the AC local power grid 11 to perform circuit reactive compensation to improve the efficiency of the AC local power grid 11 and reduce losses.

[0052] The evening time and daytime time can be specifically set in the PLC controller. This embodiment is applicable to new energy vehicles and various chemical energy storages.

[0053] In this embodiment, when a 0.2Gwh energy module manufacturer uses a VES virtual energy bank based on the energy module operating condition aging process, it can produce 0.2Gwh of 200V / 100Ah electric energy modules annually. The NCE energy module 3 stores or releases 6Mwh of electricity. Compared with the current high-end level of lithium-ion battery manufacturing at home and abroad, this saves RMB 6 million in energy storage battery investment and RMB 1.08 million in electricity costs annually (based on the peak-valley electricity price difference of RMB 0.6 / kwh).

[0054] It should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiment, those skilled in the art may still modify the technical solutions described in the above embodiment or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A VES virtual energy bank based on the aging process of energy modules, characterized by: It includes an NCE energy module, an IPB iterative plug-in bin for plugging in or out of the NCE energy module, a stacking conveyor for transporting the NCE energy module, an EIP embedding platform and a VEC virtual power storage control box arranged on both sides of the stacking conveyor; the NCE energy module is provided with a first positive and negative aviation plug and a first CAN communication aviation plug; The stacking conveyor includes an upper horizontal guide rail and a lower horizontal guide rail arranged in parallel, a longitudinal support rod traveling on the upper horizontal guide rail and the lower horizontal guide rail, and an ASM automatic stacking robot traveling up and down on the longitudinal support rod; The EIP embedded platform is a steel frame structure, the upper part of the steel frame structure is used for array embedded IPB iterative plug-in bins, and the lower part of the steel frame structure is used for array embedded VEC virtual power storage control boxes; Each of the IPB iterative plug-in compartments is provided with a base for horizontally placing the NCE energy module, a second positive and negative aviation plug that is directly plugged into or disconnected from the first positive and negative aviation plugs on the NCE energy module, and a second CAN communication aviation plug that is directly plugged into or disconnected from the first CAN communication aviation plug; The VEC virtual power bank control box includes a PLC controller and a virtual power bank control circuit for receiving the working instructions of the PLC controller to simulate the working condition charging and discharging energy storage and power peak regulation of the NCE energy module. The virtual power bank control circuit is electrically connected to the second positive and negative aviation plugs of the IPB iterative plug-in warehouse, and the PLC controller is electrically connected to the second CAN communication aviation plug of the IPB iterative plug-in warehouse, the virtual power bank control circuit, and the ASM automatic stacking robot. The NCE energy module is a work-in-progress in the static aging process during the lithium battery manufacturing process.

2. The VES virtual energy bank based on the energy module working condition aging process according to claim 1 is characterized in that: The virtual energy bank control circuit in each VEC virtual energy bank control box embedded in an array at the lower part of the EIP embedded platform is electrically connected to the NCE energy module in the IPB iterative plug-in bin of the corresponding column.

3. The VES virtual energy bank based on the energy module working condition aging process according to claim 1 is characterized in that: The ASM automatic palletizing robot is equipped with a CCD industrial imaging automatic positioning system.

4. The VES virtual energy bank based on the energy module working condition aging process according to claim 1 is characterized in that: The EIP embedded platform is installed and fixed on the cement floor embedded parts through fasteners.

5. The VES virtual energy bank based on the energy module working condition aging process according to any one of claims 1 to 4, characterized in that: The virtual power bank control circuit includes a transformer, an AC mains isolator, an AC local capacitor compensator, an AC local power grid, an AC local power grid isolator, a PCS bidirectional energy storage converter, an AC local AC electrical appliance isolator, a PWM full-power switch, and a DC bus. One end of the AC mains isolator is connected to the low-voltage side of the transformer, and the other end is connected to the AC local power grid; the high-voltage side of the transformer is connected to the mains high-voltage power grid; the AC local capacitance compensator is connected to the AC local power grid; one end of the AC local AC electrical appliance isolator is connected to the AC local power grid, and the other end is connected to the AC electrical appliance; One end of the AC local power grid isolator is connected to the AC local power grid, and the other end is respectively connected to one end of several PCS bidirectional energy storage converters. The other end of each PCS bidirectional energy storage converter is connected to one end of the PWM full-power switch and the negative pole of the second positive and negative aviation plug of the IPB iterative plug-in compartment group. The positive pole of the second positive and negative aviation plug of the IPB iterative plug-in compartment group is connected to one end of the PWM full-power switch. The negative pole of the NCE energy module and the other end of the PWM full-power switch both provide power transmission to DC electrical appliances through the DC bus. The IPB iterative plug-in bin group is composed of at least one IPB iterative plug-in bin connected in series; the output end of the PLC controller is connected to the AC local power grid; The PWM full-power switch is a pulse width modulator, which is used to achieve no-load safe switching when the NCE energy module is iterated according to process requirements.

6. The VES virtual energy bank based on the energy module working condition aging process according to claim 5 is characterized in that: The AC mains isolator includes a first isolating switch, a first bidirectional meter, a first contactor, and a first circuit breaker. The first isolating switch is connected to the transformer, and the first circuit breaker is connected to the AC local power grid.

7. The VES virtual energy bank based on the energy module working condition aging process according to claim 5 is characterized in that: The AC local power grid isolator includes a second isolating switch, a second bidirectional meter, a second contactor, and a second circuit breaker. The second isolating switch is connected to the AC local power grid, and the second circuit breaker is respectively connected to one end of a plurality of PCS bidirectional energy storage converters.

8. The VES virtual energy bank based on the energy module working condition aging process according to claim 5 is characterized in that: The AC local area AC electrical appliance isolator includes a third isolating switch, a third bidirectional meter, a third contactor, and a third circuit breaker. The third isolating switch is connected to the AC local area power grid, and the third circuit breaker is connected to the AC electrical appliance.

9. The VES virtual energy bank based on the energy module working condition aging process according to claim 5 is characterized in that: The AC local power grid adopts an AC380 three-phase four-wire system.

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