A dynamically-capacity-allocatable charging and energy storage station and operation mode

Abstract

The application discloses a charging, storing and battery swapping station with dynamic capacity distribution, and relates to the technical field of charging, storing and battery swapping stations.The charging, storing and battery swapping station comprises a storage system and a battery swapping system.The storage system comprises N battery clusters, a PCS total module, a transformer and grid-connected equipment.Each battery cluster is connected to the PCS total module.The PCS total module is connected to the transformer.The transformer is connected to the power grid through the grid-connected equipment.The application further discloses an operation mode of the charging, storing and battery swapping station with dynamic capacity distribution.The charging, storing and battery swapping station can meet the demand of electric vehicle battery swapping and the power scheduling of the power grid at the same time, and the availability, operation efficiency and economy of the charging, storing and battery swapping station are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of charging, storing and battery swapping stations, and particularly relates to a charging, storing and battery swapping station with dynamic capacity allocation and an operation mode. BACKGROUND

[0002] With the development of electric vehicle technology, the number of electric vehicles in China is increasing. Large-scale electric vehicles accessing charging piles at the same time will cause a huge impact on the power grid, making power grid scheduling difficult. At the same time, long charging time, user range anxiety, and inconvenient charging of electric vehicles limit the development of electric vehicles. Electric vehicles using battery swapping mode can achieve fast battery replacement, and can solve the problems of long charging time and user range anxiety of electric vehicles through reasonable arrangement of battery swapping stations. The replaced power batteries can be used to provide peak shaving and frequency modulation services for the power grid, playing the role of power peak shaving and valley filling. In addition, with the increasing capacity of new energy such as photovoltaic and wind power in China, the instability, unpredictability and discontinuity of new energy generation bring great challenges to the safety of the power grid, and it is also urgent to develop supporting energy storage facilities to respond to the demand for peak shaving and frequency modulation of the power grid. At present, the battery swapping station in China only provides battery swapping services for electric vehicles, and lacks mature charging, storing and battery swapping station construction.

[0003] In addition, in the existing charging and battery swapping technology, the power grid is used to charge the batteries to adjust the load of the power grid, and the operation mode is single. These technologies cannot meet the demand of electric vehicle battery swapping and power grid peak shaving and frequency modulation at the same time.

[0004] Therefore, the skilled in the art is committed to providing a charging, storing and battery swapping station with dynamic capacity allocation and an operation mode, which can realize the charging and battery swapping of electric vehicles and the peak shaving and frequency modulation of the power grid at the same time. SUMMARY

[0005] In view of the defects in the prior art, the technical problem to be solved by the present application is how to provide a charging, storing and battery swapping station with dynamic capacity allocation, which can meet the demand for charging and battery swapping of electric vehicles and peak shaving and frequency modulation of the power grid at the same time.

[0006] To achieve the above-mentioned purpose, the present application provides a charging, storing and battery swapping station with dynamic capacity allocation, which comprises an energy storage system and a battery swapping system, the energy storage system comprises N battery clusters, a PCS total module, a transformer and a grid-connected device, each battery cluster is connected to the PCS total module, the PCS total module is connected to the transformer, and the transformer is connected to the grid through the grid-connected device.

[0007] Further, the N is at least 2.

[0008] Further, the PCS total module adopts a topology structure of one or more energy storage PCSs connecting N parallel bidirectional DC / DC converters.

[0009] Further, the DC / DC converter is connected with the battery cluster one by one.

[0010] Further, the PCS total module adopts a topology structure of N parallel energy storage PCSs.

[0011] Further, the energy storage PCS is connected with the battery cluster one by one.

[0012] Further, the PCS total module is configured to charge all the battery clusters, discharge all the battery clusters, partially charge and partially discharge, partially charge, and partially discharge.

[0013] Further, the battery cluster is also used for the battery swap system.

[0014] Preferably, the battery cluster is an electric vehicle battery.

[0015] The application also discloses an operation mode of the charging and storage battery swap station with dynamic capacity allocation, and the operation mode comprises:

[0016] Operation mode 1: when the battery cluster SOC of the charging and storage battery swap station does not reach the SOC upper limit value, if a power grid power reduction instruction is received, the PCS total module is placed in a charging state, and the battery cluster whose SOC does not reach the upper limit value is charged through the power grid; when the battery SOC reaches the SOC upper limit, the battery cluster stops charging.

[0017] Operation mode 2: when the battery cluster SOC of the charging and storage battery swap station does not reach the SOC lower limit value, if a power grid power increase instruction is received, the PCS total module is placed in a discharging state, and the battery cluster whose SOC does not reach the lower limit value is discharged through the power grid; when the battery SOC reaches the SOC lower limit, the battery cluster stops discharging.

[0018] Operation mode 3: when the battery cluster SOC of the charging and storage battery swap station does not reach the SOC lower limit value, if a full battery demand is proposed by the battery swap system, the PCS total module is placed in a partial charging and partial discharging state, so that the battery cluster responding to the battery swap demand is adjusted to a charging state, and the remaining battery clusters are placed in a discharging state and charge the battery cluster responding to the battery swap demand; when the battery swap battery SOC reaches the SOC upper limit value, the charging is ended; in this process, all the battery clusters are disconnected with the power grid.

[0019] Operation mode 4: when the battery cluster SOC of the charging and storage battery swap station reaches the SOC lower limit value, if a full battery demand is proposed by the battery swap system, the PCS total module is placed in a charging state, so that the battery cluster responding to the battery swap demand is adjusted to a charging state, and the remaining battery clusters remain disconnected, and the power grid charges the battery cluster responding to the battery swap demand; when the battery swap battery cluster SOC reaches the SOC upper limit value, the charging is ended.

[0020] Running mode 5: when the battery cluster SOC of the charging and storage battery swap station does not reach the SOC lower limit value, if the power grid power-up instruction is received, and the battery swap system proposes the full battery demand at the same time, the PCS total module is placed in the partial charging and partial discharging state, the battery cluster responding to the battery swap demand is adjusted to the charging state, the remaining battery cluster is placed in the discharging state, and the remaining battery cluster whose SOC does not reach the lower limit value discharges to the battery swap battery cluster and the power grid at the same time; when the SOC of the battery swap battery cluster reaches the SOC upper limit value, the battery swap battery cluster stops charging; when the SOC of the discharging battery cluster reaches the SOC lower limit value, the discharging battery cluster stops discharging.

[0021] The present application has at least the following beneficial technical effects:

[0022] The charging and storage battery swap station with dynamically allocated capacity provided by the present application realizes the peak load shifting of the power grid by full charging, full discharging, partial charging and partial discharging, partial charging and partial discharging of the battery cluster; at the same time, according to the power scheduling instruction of the electric vehicle battery swap capacity and the power grid, the battery swap capacity is dynamically allocated, the electric vehicle battery swap demand and the power scheduling instruction of the power grid are met at the same time, thereby improving the availability, operation efficiency and economy of the charging and storage battery swap station.

[0023] The concept, specific structure and generated technical effects of the present application will be further described below in combination with the drawings, so as to fully understand the purpose, features and effects of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the principle diagram of the charging and storage battery swap station with dynamically allocated capacity provided by the preferred embodiment of the present application;

[0025] Figure 2 is the principle diagram of the preferred embodiment 1 of the present application;

[0026] Figure 3 is the running mode 1 schematic diagram of the preferred embodiment 1 of the present application;

[0027] Figure 4 is the running mode 2 schematic diagram of the preferred embodiment 1 of the present application;

[0028] Figure 5 is the running mode 3 schematic diagram of the preferred embodiment 1 of the present application;

[0029] Figure 6 is the running mode 4 schematic diagram of the preferred embodiment 1 of the present application;

[0030] Figure 7 is the running mode 5 schematic diagram of the preferred embodiment 1 of the present application;

[0031] Figure 8is a schematic diagram of preferred embodiment 2 of the present application;

[0032] Figure 9 is a schematic diagram of operation mode 1 of preferred embodiment 2 of the present application;

[0033] Figure 10 is a schematic diagram of operation mode 2 of preferred embodiment 2 of the present application;

[0034] Figure 11 is a schematic diagram of operation mode 3 of preferred embodiment 2 of the present application;

[0035] Figure 12 is a schematic diagram of operation mode 4 of preferred embodiment 2 of the present application;

[0036] Figure 13 is a schematic diagram of operation mode 5 of preferred embodiment 2 of the present application. DETAILED DESCRIPTION

[0037] The technical content of the present application will be more clearly understood and facilitated to be understood by introducing the preferred embodiments of the present application with reference to the accompanying drawings of the specification. The present application can be embodied in many different forms of embodiments, and the protection scope of the present application is not limited to the embodiments mentioned herein.

[0038] In the drawings, the same components are denoted by the same reference numerals, and components having similar structures or functions are denoted by similar reference numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present application is not limited to the size and thickness of each component. In order to make the drawing clearer, the thickness of the components is appropriately exaggerated in some places in the drawing.

[0039] As shown in Figure 1 The dynamic-capacity-allocable charging, storing and battery swapping station of the present application includes an energy storage system and a battery swapping system. The energy storage system includes N battery clusters, a PCS total module, a transformer, and a grid-connected device. Each battery cluster is connected to the PCS total module, the PCS total module is connected to the transformer, and the grid-connected device is connected to the grid. The number N of battery clusters is at least 2. The battery clusters are also used in the battery swapping system to realize battery swapping for electric vehicles. The battery clusters of the energy storage system can adjust the charging and discharging state at any time, and according to the demand for electric vehicle battery swapping and the demand for grid peak regulation and frequency regulation, the charging, storing and battery swapping station can dynamically allocate the capacity of the battery clusters responding to the two types of demands.

[0040] In order to respond to the demand for electric vehicle battery swapping and the demand for grid peak regulation and frequency regulation, the charging, storing and battery swapping station of the present application realizes dynamic allocation of the capacity of the battery clusters responding to the two different demands by constructing a suitable PCS total module topology, so as to improve the operation efficiency and economy of the charging, storing and battery swapping station. The PCS total module can realize control of all charging, all discharging, partial charging and partial discharging, partial charging, and partial discharging of the N battery clusters.

[0041] Example 1

[0042] like Figure 2 As shown, the dynamically allocable charging, storage, and battery swapping station in this embodiment includes N battery clusters, N bidirectional DC / DC converters, one energy storage PCS, a transformer, and grid-connected equipment. The N bidirectional DC / DC converters and the energy storage PCS form the topology of the PCS module. The number of bidirectional DC / DC converters is the same as the number of battery clusters, and the N bidirectional DC / DC converters are arranged in parallel. Each battery cluster is connected to each bidirectional DC / DC converter in a one-to-one correspondence. Each bidirectional DC / DC converter is connected to the energy storage PCS, which is connected to the power grid through the transformer and the grid-connected equipment. The grid-connected equipment mainly serves as the boundary between the charging, storage, and battery swapping station and the power grid, and its internal components are mainly switching devices, acting as a means of connecting / disconnecting from the power grid. By controlling the battery management system and bidirectional DC / DC converter of each battery cluster, each battery cluster can be individually controlled for discharging and charging. This allows for dynamic allocation of the battery cluster capacity of the charging, storage, and battery swapping station based on the battery swapping capacity requirements of electric vehicles and the power grid dispatching commands, ensuring that the station meets the battery swapping needs of electric vehicles and maximizes its ability to respond to grid peak shaving and frequency regulation requirements.

[0043] The operating mode of the charging, storage, and battery swapping station with dynamically allocated capacity in this embodiment is as follows:

[0044] like Figure 3 As shown, when the SOC of the battery clusters at the charging, storage, and battery swapping station has not reached the upper limit, if a power reduction command is received from the grid, the energy storage PCS will be put into charging mode. The battery clusters with SOC below the upper limit will be charged by connecting to the grid through the energy storage PCS, transformer, and grid-connected equipment. When the battery SOC reaches the upper limit, the battery clusters will stop charging, the energy storage PCS will be put into standby mode, and the battery clusters will be disconnected from the grid. In this operating mode, the charging, storage, and battery swapping station provides power reduction services to the grid. For example, when the grid load is at its lowest point, the charging, storage, and battery swapping station can use the grid to charge the battery clusters, thus achieving "valley filling".

[0045] like Figure 4 As shown, when the SOC of the battery clusters at the charging, storage, and battery swapping station does not reach the lower SOC limit, if a power boost command is received from the grid, the energy storage PCS is placed in a discharging state. The battery clusters with SOC below the lower limit are connected to the grid for discharge through the energy storage PCS, transformer, and grid-connected equipment. When the battery SOC reaches the lower SOC limit, the battery clusters stop discharging, the energy storage PCS is placed in standby mode, and the battery clusters are disconnected from the grid. In this operating mode, the charging, storage, and battery swapping station provides power boost services to the grid. For example, when the grid's electricity load is at its peak, the charging, storage, and battery swapping station discharges to the grid to achieve "peak shaving."

[0046] likeFigure 5 As shown, when the SOC of the battery clusters at the charging, storage, and battery swapping station has not reached the lower limit, if the battery swapping system requests a fully charged battery, the DC / DC converter corresponding to the battery cluster responding to the swapping request will switch to charging mode, while the DC / DC converters corresponding to other battery clusters will be in discharging mode and charging the battery clusters responding to the swapping request. Charging ends when the SOC of the swapping battery clusters reaches the upper limit. During this process, the energy storage PCS is in standby mode, and all battery clusters are disconnected from the grid. In this operating mode, the charging, storage, and battery swapping station dynamically allocates battery capacity based on the battery swapping needs of electric vehicles and uses the remaining battery clusters at the station to charge these batteries, ensuring that the swapping batteries are fully charged to meet the needs of electric vehicle users. This mode can avoid further increasing the peak load on the grid by charging swapping batteries from the grid during peak electricity consumption periods.

[0047] like Figure 6 As shown, when the State of Charge (SOC) of the battery clusters at the charging, storage, and battery swapping station reaches the lower limit, if the battery swapping system requests a fully charged battery, the DC / DC converter corresponding to the battery cluster responding to the swapping request will switch to charging mode, while other battery clusters will remain disconnected. The energy storage PCS will be in charging mode, and the grid will charge the battery clusters responding to the swapping request. Charging will end when the SOC of the swapped battery reaches the upper limit; the energy storage PCS will then be placed in standby mode, and the swapped battery will be disconnected from the grid. In this operating mode, the charging, storage, and battery swapping station dynamically allocates the swapped battery capacity according to the battery swapping needs of electric vehicles and utilizes the grid to charge these swapped batteries, ensuring that the swapped batteries meet the needs of electric vehicle users.

[0048] like Figure 7 As shown, when the SOC of the battery clusters at the charging, storage, and battery swapping station has not reached the lower limit, if a power increase command is received from the grid and the battery swapping system requests a fully charged battery, the DC / DC converter corresponding to the battery cluster responding to the swapping request will switch to charging mode, while the remaining battery clusters will be in discharging mode. Simultaneously, the energy storage PCS will also be in discharging mode, and the remaining battery clusters whose SOC has not reached the lower limit will discharge to both the swapping battery and the grid. When the SOC of the swapping battery cluster reaches the upper limit, charging of the swapping battery cluster ends. When the SOC of the discharging battery cluster reaches the lower limit, discharging of the discharging battery cluster stops. In this operating mode, the charging, storage, and battery swapping station dynamically allocates the battery cluster capacity for swapping based on the electric vehicle battery capacity demand and the grid power dispatch command. The remaining battery clusters at the charging, storage, and battery swapping station, excluding those responding to the swapping request, can simultaneously discharge to both the swapping battery clusters and the grid, thus simultaneously meeting the electric vehicle swapping demand and the grid power increase demand.

[0049] In other embodiments, there may be multiple energy storage PCS.

[0050] Example 2

[0051] As Figure 8 shown, the dynamically-capacity-allocable charging, storing and battery swapping station of the embodiment includes N battery clusters, N energy storage PCSs, a transformer and a grid-connected device. The N energy storage PCSs form the topology of the PCS total module of the embodiment, the number of the energy storage PCSs is the same as the number of the battery clusters, and the N energy storage PCSs are arranged in parallel. Each battery cluster is connected to each energy storage PCS one-to-one, each energy storage PCS is connected to the grid through the transformer and the grid-connected device, and the grid-connected device is mainly a switching device, which serves as a connection / disconnection point between the charging, storing and battery swapping station and the grid. Through the control of the battery management system of each battery cluster and the corresponding energy storage PCS, each battery cluster can be individually controlled to discharge and charge, so that the battery cluster capacity of the charging, storing and battery swapping station can be dynamically allocated to meet the demand of the electric vehicle battery swapping and the demand of responding to the grid dispatching power instruction, such as peak shaving and frequency modulation.

[0052] The operation mode of the dynamically-capacity-allocable charging, storing and battery swapping station of the embodiment is as follows:

[0053] As Figure 9 shown, when the SOC of the battery cluster of the charging, storing and battery swapping station does not reach the upper limit value, if a grid power reduction instruction is received, the corresponding energy storage PCS is placed in a charging state, and the battery cluster whose SOC does not reach the upper limit value is charged through the corresponding energy storage PCS, the transformer and the grid-connected device. When the SOC of the battery cluster reaches the upper limit value, the battery cluster stops charging, the corresponding energy storage PCS is placed in a standby state, and the battery cluster is disconnected from the grid. In this operation mode, the charging, storing and battery swapping station provides power reduction service for the grid, for example, when the power load of the grid is in a trough time, the charging, storing and battery swapping station charges the battery cluster using the grid to achieve "filling the valley".

[0054] As Figure 10 shown, when the SOC of the battery cluster of the charging, storing and battery swapping station does not reach the lower limit value, if a grid power increase instruction is received, the corresponding energy storage PCS is placed in a discharging state, and the battery cluster whose SOC does not reach the lower limit value is discharged through the corresponding energy storage PCS, the transformer and the grid-connected device. When the SOC of the battery cluster reaches the lower limit value, the battery cluster stops discharging, the corresponding energy storage PCS is placed in a standby state, and the battery cluster is disconnected from the grid. In this operation mode, the charging, storing and battery swapping station provides power increase service for the grid, for example, when the power load is in a peak time, the charging, storing and battery swapping station discharges the grid to achieve "peak shaving".

[0055] As Figure 11As shown, when the SOC of the battery cluster of the charging and storage battery swap station does not reach the lower limit value of the SOC, if the battery swap system proposes a full battery demand, the battery cluster corresponding to the battery swap demand is adjusted to the charging state, the other battery clusters are placed in the discharging state and charge the battery cluster responding to the battery swap demand, and when the SOC of the battery swap cluster reaches the upper limit value of the SOC, the charging is ended. In this process, all battery clusters are disconnected from the power grid. In this operating mode, the charging and storage battery swap station dynamically allocates the battery swap capacity according to the battery swap demand of the electric vehicle, and charges these battery swap batteries using the remaining battery clusters of the charging and storage battery swap station, so that the battery swap batteries are fully charged to meet the demand of the electric vehicle user. This mode can avoid further increasing the peak power load of the power grid caused by charging the battery swap battery from the power grid during the peak power consumption time.

[0056] As shown, Figure 12 As shown, when the SOC of the battery cluster of the charging and storage battery swap station does not reach the lower limit value of the SOC, if the battery swap system proposes a full battery demand, the battery cluster corresponding to the battery swap demand is adjusted to the charging state, the other battery clusters are placed in the discharging state and charge the battery cluster responding to the battery swap demand, and when the SOC of the battery swap cluster reaches the upper limit value of the SOC, the charging is ended. In this process, all battery clusters are disconnected from the power grid. In this operating mode, the charging and storage battery swap station dynamically allocates the battery swap capacity according to the battery swap demand of the electric vehicle, and charges these battery swap batteries using the remaining battery clusters of the charging and storage battery swap station, so that the battery swap batteries are fully charged to meet the demand of the electric vehicle user. This mode can avoid further increasing the peak power load of the power grid caused by charging the battery swap battery from the power grid during the peak power consumption time.

[0057] As shown, Figure 13 As shown, when the SOC of the battery cluster of the charging and storage battery swap station does not reach the lower limit value of the SOC, if the battery swap system proposes a full battery demand, the battery cluster corresponding to the battery swap demand is adjusted to the charging state, the other battery clusters are placed in the discharging state and charge the battery cluster responding to the battery swap demand, and when the SOC of the battery swap cluster reaches the upper limit value of the SOC, the charging is ended. In this process, all battery clusters are disconnected from the power grid. In this operating mode, the charging and storage battery swap station dynamically allocates the battery swap capacity according to the battery swap demand of the electric vehicle, and charges these battery swap batteries using the remaining battery clusters of the charging and storage battery swap station, so that the battery swap batteries are fully charged to meet the demand of the electric vehicle user. This mode can avoid further increasing the peak power load of the power grid caused by charging the battery swap battery from the power grid during the peak power consumption time.

[0058] The preferred embodiments of the present application have been described above in detail. It should be understood that modifications and variations to the preferred embodiments could be made by those skilled in the art without departing from the spirit and scope of the application. Accordingly, it is intended that there be included within the scope of the application, all such modifications and variations as would be apparent to those skilled in the art upon reading this disclosure. It is intended to obtain for the inventors such patent rights as are available for any patent granted on the present application.

Claims

1. A dynamically-capacity-allocatable charging and energy storage station, characterized in that, The energy storage system and the battery swap system, the energy storage system comprises N battery clusters, a PCS total module, a transformer, and a grid-connected device, each battery cluster is connected to the PCS total module, the PCS total module is connected with the transformer, and the transformer is connected to the power grid through the grid-connected device; the N battery clusters are battery swap batteries for electric vehicles, and the N battery clusters are also used in the battery swap system, and the battery swap system requires full power for the N battery clusters; each battery cluster is separately discharged and charged, so that the battery cluster capacity of the charging and storage battery swap station is dynamically allocated according to the electric vehicle battery swap capacity demand and the power grid scheduling power instruction, so as to meet the electric vehicle battery swap demand and the power grid peak regulation and frequency regulation demand, that is, the charging and storage battery swap station with dynamically allocated capacity dynamically allocates the battery cluster capacity of the two types of demands; the PCS total module is configured to charge all the N battery clusters, discharge all the N battery clusters, partially charge and partially discharge, partially charge, and partially discharge; the charging and discharging mode of the battery cluster is: Running mode 1: when the SOC of the battery cluster of the charging and storage battery swap station does not reach the upper limit value of SOC, if a power grid power reduction instruction is received, the PCS total module is placed in a charging state, and the battery cluster whose SOC does not reach the upper limit value is charged by the power grid; when the battery SOC reaches the upper limit of SOC, the battery cluster stops charging; Running mode 2: when the SOC of the battery cluster of the charging and storage battery swap station does not reach the lower limit value of SOC, if a power grid power increase instruction is received, the PCS total module is placed in a discharging state, and the battery cluster whose SOC does not reach the lower limit value is discharged by the power grid; when the battery SOC reaches the lower limit of SOC, the battery cluster stops discharging; Running mode 3: when the SOC of the battery cluster of the charging and storage battery swap station does not reach the lower limit value of SOC, if the battery swap system requires full power battery, the PCS total module is placed in a partially charging and partially discharging state, so that the battery cluster responding to the battery swap demand is adjusted to a charging state, and the remaining battery clusters are placed in a discharging state and charge the battery cluster responding to the battery swap demand; when the battery swap battery SOC reaches the upper limit value of SOC, the charging is completed; during the process, all the battery clusters are disconnected from the power grid; Running mode 4: when the SOC of the battery cluster of the charging and storage battery swap station has reached the lower limit value of SOC, if the battery swap system requires full power battery, the PCS total module is placed in a charging state, so that the battery cluster responding to the battery swap demand is adjusted to a charging state, and the remaining battery clusters remain disconnected, and the power grid charges the battery cluster responding to the battery swap demand; when the battery swap battery cluster SOC reaches the upper limit value of SOC, the charging is completed; The operation mode 5 is as follows: when the battery cluster SOC of the charging and storage power swapping station does not reach the lower limit value of SOC, if the power grid upgrade power instruction is received and the full battery demand of the power swapping system is proposed at the same time, the PCS total module is placed in the state of partial charging and partial discharging, the battery cluster responding to the power swapping demand is adjusted to the charging state, the remaining battery clusters are placed in the discharging state, and the remaining battery clusters whose SOC does not reach the lower limit value simultaneously discharge to the power swapping battery cluster and the power grid; when the SOC of the power swapping battery cluster reaches the upper limit value of SOC, the power swapping battery cluster stops charging; and when the SOC of the discharging battery cluster reaches the lower limit value of SOC, the discharging battery cluster stops discharging. 2.The dynamically capacity-allotable charging and power swapping station of claim 1, wherein, The N is at least 2. 3.The dynamically capacity-allotable charging and power swapping station of claim 1, wherein, The PCS total module adopts a topology structure in which one or more energy storage PCSs are connected with N parallel bidirectional DC / DC converters. 4.The dynamically capacity-allotable charging and power swapping station of claim 3, wherein, The DC / DC converter is connected with the battery cluster in one-to-one correspondence. 5.The dynamically capacity-allotted charging and battery swapping station of claim 1, wherein, The PCS total module adopts a topology structure in which N parallel energy storage PCSs are connected. 6.The dynamically capacity-allotable charging and power swapping station of claim 5, wherein, The energy storage PCS is connected with the battery cluster in one-to-one correspondence.

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