CN113386607B - Charging station charging and discharging automatic balancing method and device and charging station - Google Patents

Abstract

The application discloses a charging station charging and discharging automatic balancing method, a charging station charging and discharging automatic balancing device and a charging station, wherein the relation between power supply and power consumption can be judged according to the voltage state of a local power grid (charging station), and meanwhile, the self charging and the external discharging are carried out according to the judgment of the energy storage state of an energy storage assembly. This application has set for several kinds of voltage state grades to local electric wire netting (charging station) voltage state and energy storage component's energy storage state, adjusts energy storage component in real time according to different state grades and carries out the energy storage or discharge to adjust the power supply and the power consumption balance of local electric wire netting (charging station), effectively alleviate the power supply pressure of peak period electric wire netting. According to the method and the device, the difference state of power utilization and power supply can be judged more accurately, the supply and demand relation of a local power grid (charging station) is balanced according to the actual difference condition and the energy storage state of the energy storage assembly, and the vehicle charging requirement of the charging station is met.

Description

A charging station charging and discharging automatic balancing method, device and charging station

technical field

The present application relates to the technical field of charging stations, and in particular to a charging station charging and discharging automatic balancing method, device and charging station.

Background technique

For a long time, due to the large demand for electricity in the society and the insufficient power supply capacity of the power grid during the peak period of electricity consumption, the State Grid has divided the peak period of electricity consumption and the low period of electricity consumption according to the time period according to the laws of social electricity consumption in different periods, and at the same time encourages Private power supplies electricity to the grid during the peak period of electricity consumption to supplement power supply, and lowers the electricity fee during the low period of electricity consumption to balance the supply and demand gap of the grid.

In order to meet the needs of electric vehicles to increase the charging speed, the society began to research and develop high-power charging. High-power charging requires a lot of power, especially in the peak period when many vehicles are charging at the same time, the demand for power is particularly large, which brings great power supply pressure to the local power grid.

Therefore, there is an urgent need to provide a technical solution capable of alleviating the power supply pressure of the local power grid.

Contents of the invention

The present application provides a method for automatically balancing charging and discharging in a charging station. The method is applied in a charging station. The charging station includes a wiring assembly, an electric energy bidirectional conversion assembly, an energy storage assembly, and a monitoring and control assembly. The electric energy bidirectional conversion assembly One end of the transformer is connected to the low-voltage side of the transformer through the wiring assembly, and the high-voltage side of the transformer is connected to the external power grid;

The methods include:

Real-time monitoring of the first working voltage of the transformer connected to the charging station and the state parameters of the energy storage components in the charging station by configuring the monitoring and control components in the charging station;

comparing the first working voltage with a preset grid voltage threshold;

comparing the state parameter with a preset energy storage threshold, the preset energy storage threshold including a preset first state threshold;

When the first working voltage is lower than the preset grid voltage threshold and the state parameter is higher than the preset first state threshold, the monitoring and control component supplies electric energy connected between the transformer and the energy storage component The bidirectional conversion component sends a power supply signal to the transformer to control the power bidirectional conversion component to be in the first power supply mode, so that the energy storage component supplies power to the grid corresponding to the transformer, so as to increase the first working voltage of the transformer.

Further, also include:

When the first working voltage is greater than the preset grid voltage threshold or the state parameter is lower than the preset first state threshold, the monitoring and control component sends a power supply stop signal to the electric energy bidirectional conversion component to control the The electric energy bidirectional conversion component is disconnected, so that the energy storage component stops supplying power to the transformer.

Further, the preset energy storage threshold further includes a preset second state threshold, and the preset second state threshold is smaller than the preset first state threshold;

The method also includes:

When the state parameter of the energy storage component monitored by the monitoring and control component is lower than the preset second state threshold, the monitoring and control component sends a charging signal to the electric energy bidirectional conversion component to control the electric energy bidirectional The conversion component is in a forced charging mode, so that the grid connected to the transformer charges the energy storage component.

Further, also include:

When the state parameter of the energy storage component monitored by the monitoring and control component is lower than the preset first state threshold and higher than the preset second state threshold, and the first working voltage is lower than the preset grid voltage threshold, Then the monitoring and control component sends a power supply stop signal to the bidirectional electric energy conversion component to control the bidirectional electric energy conversion component to be disconnected, so that the energy storage component stops charging.

Further, also include:

When the state parameter of the energy storage component monitored by the monitoring and control component is lower than the preset first state threshold and higher than the preset second state threshold, and the first working voltage is higher than the preset grid voltage threshold, Then the monitoring and control component sends a charging signal to the bidirectional electric energy conversion component to control the bidirectional electric energy conversion component to be in the first charging mode, so that the power grid connected to the transformer charges the energy storage component.

Further, also include:

When the state parameter of the energy storage component monitored by the monitoring and control component is lower than the preset first state threshold and higher than the preset second state threshold, and the first working voltage is higher than the preset grid voltage threshold, Then the monitoring and control component sends a charging signal to the bidirectional electric energy conversion component to control the bidirectional electric energy conversion component to be in the second charging mode, so that the power grid connected to the transformer fully charges the energy storage component.

Further, the charging station further includes a charging cabinet, one end of the charging cabinet is connected to the wiring assembly, and the other end of the charging cabinet is used to connect to the charging vehicle;

The method also includes:

When the first working voltage is greater than the preset grid voltage threshold and less than the rated voltage of the external grid, and the state parameter is higher than the preset first state threshold, the monitoring and control component sends the vehicle The charging signal is used to control the electric energy bidirectional conversion component to be in the second power supply mode, so that the energy storage component supplies power to the charging vehicle.

Further, the preset grid voltage threshold is determined according to the rated voltage of the external grid.

On the other hand, the present invention provides a charge and discharge automatic balancing device for a charging station, which is applied in a charging station, and the charging station includes a wiring assembly, an electric energy bidirectional conversion assembly, an energy storage assembly, and a monitoring and control assembly, and the electric energy bidirectional conversion One end of the component is connected to the low-voltage side of the transformer through the wiring component, and the high-voltage side of the transformer is connected to the external grid;

The devices include:

The working voltage acquisition module is configured to perform real-time monitoring of the first working voltage of the transformer connected to the charging station and the state parameters of the energy storage components in the charging station by configuring the monitoring and control components in the charging station;

A first comparison module configured to compare the first operating voltage with a preset grid voltage threshold;

The second comparison module is configured to compare the state parameter with a preset energy storage threshold, and the preset energy storage threshold includes a preset first state threshold;

The power supply module is configured to perform monitoring and control components connected to the transformer and the The power bidirectional conversion component between the energy storage components sends a power supply signal to the transformer to control the power bidirectional conversion component to be in the first power supply mode, so that the energy storage component supplies power to the grid corresponding to the transformer, so as to increase the power of the transformer. first working voltage.

In yet another aspect, the present invention provides a charging station, the charging station includes a wiring assembly, an electric energy bidirectional conversion assembly, an energy storage assembly, and a monitoring and control assembly, one end of the electric energy bidirectional conversion assembly is connected to a transformer through the wiring assembly The low-voltage side is connected, and the high-voltage side of the transformer is connected to an external power grid;

The charging station may implement the charging station charging and discharging automatic balancing method as described above.

The application provides a charging station charging and discharging automatic balance method, device and charging station, which can judge the supply and demand relationship between power supply and power consumption according to the voltage state of the local power grid (charging station), and at the same time judge according to the energy storage state of the energy storage component, And carry out self-charging and external discharging. This application sets several voltage state levels for the voltage state of the local power grid (charging station) and the energy storage state of the energy storage component, and adjusts the energy storage component for energy storage or discharge in real time according to different state levels, so as to adjust the local power grid (charging station) ) balance of power supply and power consumption, effectively alleviating the power supply pressure of the power grid during peak periods. This application is compared with the existing energy storage components for external discharge and self-charging according to the peak period of electricity consumption and the low period of electricity consumption divided by the national grid through social electricity consumption habits. This application can more accurately judge the power consumption and power supply. The difference state, and balance the supply and demand relationship of the local power grid (charging station) according to the actual difference state and the energy storage state of the energy storage component itself, so as to meet the vehicle charging demand of the charging station.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a flow chart of a method for automatically balancing charging and discharging in a charging station provided in an embodiment of the present application;

Fig. 2 is a flow chart of another charging and discharging automatic balancing method provided by the embodiment of the present application;

Fig. 3 is a flow chart of another charging and discharging automatic balancing method for a charging station provided in the embodiment of the present application;

Fig. 4 is a flow chart of yet another method for automatically balancing charging and discharging in a charging station provided in the embodiment of the present application;

Fig. 5 is a flow chart of yet another automatic charging and discharging charging and discharging balancing method provided by the embodiment of the present application;

Fig. 6 is a schematic structural diagram of a charging station charging and discharging automatic balancing device provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a charging station provided in an embodiment of the present application;

FIG. 8 is a schematic diagram of a hardware structure of a device provided in an embodiment of the present application for implementing the method provided in the embodiment of the present application.

Among them, 710-working voltage acquisition module, 720-first comparison module, 730-second comparison module, 740-power supply module.

Detailed ways

In order to make the purpose, technical solution and advantages of the application clearer, the application will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

In the description of the present application, it should be understood that the terms first and second are only used for descriptive purposes, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as first or second may explicitly or implicitly include one or more of these features. Also, the terms first, second, etc. are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein can be practiced in sequences other than those illustrated or described herein.

The present invention provides a charging station charging and discharging automatic balancing method, please refer to Fig. 1, Fig. 1 is a flow chart of a charging station charging and discharging automatic balancing method provided by the embodiment of the application, the method can be applied in the charging station, The charging station includes a wiring assembly, an electric energy bidirectional conversion assembly, an energy storage assembly, and a monitoring and control assembly. One end of the electric energy bidirectional conversion assembly is connected to the low-voltage side of the transformer through the wiring assembly, and the high-voltage side of the transformer is connected to an external grid connection;

The methods include:

S102. Real-time monitoring of the first working voltage of the transformer connected to the charging station and the state parameters of the energy storage components in the charging station by configuring the monitoring and control components in the charging station;

S104. Comparing the first working voltage with a preset grid voltage threshold;

S106. Comparing the state parameter with a preset energy storage threshold, where the preset energy storage threshold includes a preset first state threshold;

S108. When the first working voltage is lower than the preset grid voltage threshold and the state parameter is higher than the preset first state threshold, the monitoring and control component is connected between the transformer and the energy storage component The power bidirectional conversion component sends a power supply signal to the transformer to control the power bidirectional conversion component to be in the first power supply mode, so that the energy storage component supplies power to the grid corresponding to the transformer, so as to increase the first operating voltage of the transformer.

Specifically, the external power grid is connected to the charging station through a transformer, and the charging station may include wiring components, charging cabinets, charging vehicles, electric energy bidirectional conversion components, energy storage components, and monitoring and control components. The transformer can be connected to the power supply from the external power grid, and the transformer can convert the voltage value of the external power grid into the rated voltage of the car charging station. The wiring components are connected from the transformer, the junction box is connected to the charging cabinet and then to the charging vehicle, and the connection is connected to the bidirectional conversion component of electric energy to the energy storage component. One end of the monitoring and control component is connected to the wiring component to monitor the voltage on the power supply side of the wiring component in real time, that is, to detect the voltage of the external grid. One end is connected to the energy storage component to monitor the voltage and power of the energy storage component in real time. Electric energy bidirectional conversion components to realize the charging or discharging of energy storage components. The charging cabinet charges the charging vehicle. It can be understood that there may be at least one charging cabinet, and each charging cabinet may be connected with multiple charging vehicles. The rated capacity of the energy storage component is not specifically limited in the embodiments of this specification, and can be set according to actual needs.

Specifically, the preset grid voltage threshold can be determined according to the rated voltage of the external grid or can be determined according to the low voltage value of the grid company. The specific value of the preset grid voltage threshold is not specifically limited in the embodiment of this specification. It can be determined according to It needs to be set in practice, for example, the voltage lowered by 10% from the rated voltage value is defined as the low grid voltage (that is, the preset grid voltage threshold). For example, when the rated voltage of the external grid is 220V, the preset grid voltage threshold can be 198V.

Specifically, the state parameter of the energy storage component may represent the electric energy stored in the energy storage component, and the state parameter may be a voltage value or a charge amount of the energy storage component. Correspondingly, the preset first state threshold may be a voltage threshold or a charge threshold corresponding to the state parameter. The preset first state threshold can be set according to actual needs, and is not specifically limited in this embodiment of the specification.

Among them, the first power supply mode is that the energy storage component is used as a power source to transmit electric energy to the low-voltage side of the transformer through the power bidirectional conversion component, and the voltage output by the energy storage component is converted into a high-voltage voltage of the transformer and output to the connected power grid through the transformer. The grid provides the corresponding electrical energy.

On the basis of the above embodiments, in one embodiment of this specification, Fig. 2 is a flow chart of another charging and discharging automatic balancing method for a charging station provided in the embodiment of this application. As shown in Fig. 2, the method further includes:

S110. When the first working voltage is greater than the preset grid voltage threshold or the state parameter is lower than the preset first state threshold, the monitoring and control component sends a power supply stop signal to the electric energy bidirectional conversion component to The electric energy bidirectional conversion component is controlled to be disconnected, so that the energy storage component stops supplying power to the transformer.

It can be understood that the electric energy bidirectional conversion component can switch between multiple modes, and it can be in a disconnected state, disconnecting the energy storage component from other components.

For example, when the monitoring and control component detects that the second working voltage of the energy storage component is at the preset first state threshold, and at the same time monitors that the first working voltage at the power supply side (transformer) of the wiring component is at the preset grid voltage threshold , it can be determined that the load of the charging station (local grid) is too large, and the power supply of the charging station (local grid) is insufficient, then the monitoring and control component sends a signal to the transformer to control the power bidirectional conversion component to start the energy storage component to discharge the external grid until the wiring When the voltage on the power supply side of the component is higher than the preset grid voltage threshold, or the state parameter of the energy storage component voltage is preset to the first state threshold, the monitoring and control component sends a signal to stop power supply to control the disconnection of the electric energy bidirectional conversion component and stop the energy storage component. The components can be discharged externally.

On the basis of the above-mentioned embodiments, in one embodiment of this specification, Fig. 3 is a flow chart of another charging station automatic balancing method for charging and discharging provided by the embodiment of the present application. As shown in Fig. 3, the preset energy storage threshold It also includes a preset second state threshold, where the preset second state threshold is smaller than the preset first state threshold;

The method also includes:

S302. When the state parameter of the energy storage component detected by the monitoring and control component is lower than the preset second state threshold, the monitoring and control component sends a charging signal to the electric energy bidirectional conversion component to control the The electric energy bidirectional conversion component is in a forced charging mode, so that the power grid connected to the transformer charges the energy storage component.

Specifically, in the judgment control logic of the charging of the energy storage component and the discharge of the energy storage component, three voltage stages are set according to the power required for the normal operation of the energy storage component itself: 1. The breakdown stage of the energy storage component: refers to the energy storage battery Close to the feeding state, such as lithium iron phosphate battery or ternary lithium battery, the energy storage battery power is in the voltage range of 0-1%, and it is urgent to recharge and replenish energy; 2. Low voltage stage of energy storage components: refers to the energy storage battery storage In a low-voltage state with less energy, the stored energy can and is only enough to maintain its own needs, and it is not suitable to discharge externally. For example, the energy storage batteries such as lithium iron phosphate batteries or ternary lithium batteries are in the voltage range of 2 to 3% of the electricity; 3. High-voltage stage of energy storage components: refers to the higher voltage state where the energy storage battery has a certain amount of electric energy storage or more electric energy storage, and can be discharged externally, such as lithium iron phosphate batteries or ternary lithium batteries and other energy storage batteries. % above the voltage range, it can be discharged externally.

It can be understood that the preset second state threshold may be 2-3% of the charge amount, and the preset second state threshold may be 5% of the charge amount. In order to avoid excessive discharge of the energy storage component and cause ion activity in the energy storage component, when the state parameter of the energy storage component is lower than the preset second state threshold, the switching power bidirectional conversion component sends a charging signal to control the power bidirectional conversion component to be at Forced charging mode, forcibly charging the energy storage components.

On the basis of the above embodiments, in one embodiment of this specification, Fig. 4 is a flow chart of another charging and discharging automatic balancing method for a charging station provided in the embodiment of this application, as shown in Fig. 4 , which also includes:

S402. When the state parameter of the energy storage component monitored by the monitoring and control component is lower than the preset first state threshold and higher than the preset second state threshold, and the first working voltage is lower than the preset grid voltage threshold, the monitoring and control component sends a power supply stop signal to the bidirectional electric energy conversion component to control the bidirectional electric energy conversion component to disconnect, so that the energy storage component stops charging.

On the basis of the above-mentioned embodiments, in one embodiment of this specification, Fig. 5 is a flow chart of yet another charging and discharging automatic balancing method for a charging station provided by the embodiment of the present application, as shown in Fig. 5 , which also includes:

S502. When the state parameter of the energy storage component monitored by the monitoring and control component is lower than the preset first state threshold and higher than the preset second state threshold, and the first working voltage is higher than the preset grid voltage threshold, the monitoring and control component sends a charging signal to the bidirectional electric energy conversion component to control the bidirectional electric energy conversion component to be in the first charging mode, so that the power grid connected to the transformer charges the energy storage component.

Among them, the first power supply mode is that the connected grid is used as the power source, and the voltage of the grid is converted into the charging voltage of the energy storage component through the transformer, and the voltage of the grid is output to the connected energy storage component by switching the bidirectional conversion component of electric energy. The energy storage component is charged. It can be understood that in the first charging mode, the first operating voltage and state parameters are still monitored in real time, and when the first operating voltage is lower than the preset grid voltage threshold and the state parameters are higher than the preset first state threshold, the monitoring and control The component sends a power supply signal to the transformer to the power bidirectional conversion component connected between the transformer and the energy storage component to control the power bidirectional conversion component to be in the first power supply mode, so that the energy storage component supplies power to the grid corresponding to the transformer, so as to improve the first power supply of the transformer. Operating Voltage.

On the basis of the above-mentioned embodiments, in an embodiment of this specification, it also includes:

When the state parameter of the energy storage component monitored by the monitoring and control component is lower than the preset first state threshold and higher than the preset second state threshold, and the first working voltage is higher than the preset grid voltage threshold, Then the monitoring and control component sends a charging signal to the bidirectional electric energy conversion component to control the bidirectional electric energy conversion component to be in the second charging mode, so that the power grid connected to the transformer fully charges the energy storage component.

Exemplarily, when the monitoring and control component monitors that the voltage of the energy storage component enters the stage of collapse, the monitoring and control component sends out a signal to control the bidirectional conversion component of electric energy to charge the energy storage component for its own energy storage; during the energy storage charging process, when the monitoring and control When the control component monitors that the energy storage component enters the low voltage and low stage, if at the same time it detects that the voltage on the power supply side of the wiring component is too low in the grid voltage, it is judged that the load of the charging station (local grid) is too large and the energy storage component has enough power. To maintain its own operation, stop storing energy for the energy storage component; when the monitoring and control component detects that the voltage of the energy storage component enters a low voltage stage, and if at the same time it detects that the voltage on the power supply side of the wiring component is at a non-grid voltage too low, If it is judged that the power supply of the charging station (local grid) is normal, continue to charge the energy storage component; when the monitoring and control component detects that the voltage of the energy storage component enters the high voltage and low stage, if at the same time it detects that the voltage on the power supply side of the wiring component is at a non-grid voltage When it is too low, it is judged that the power supply of the charging station (local grid) is normal, and continue to charge the energy storage component until the energy storage component is fully charged.

Among them, the second power supply mode is that the connected grid is used as the power source, and the voltage of the grid is converted into the charging voltage of the energy storage component through the transformer, and the voltage of the grid is output to the connected energy storage component by switching the bidirectional conversion component of electric energy. The energy storage component is charged until the energy storage component is fully charged. On the basis of the above embodiments, in one embodiment of this specification, the charging station further includes a charging cabinet, one end of the charging cabinet is connected to the wiring assembly, and the other end of the charging cabinet is used to connect to the charging vehicle;

The method also includes:

When the first working voltage is greater than the preset grid voltage threshold and less than the rated voltage of the external grid, and the state parameter is higher than the preset first state threshold, the monitoring and control component sends the vehicle The charging signal is used to control the electric energy bidirectional conversion component to be in the second power supply mode, so that the energy storage component supplies power to the charging vehicle.

Based on the above embodiments, in an embodiment of this specification, the preset grid voltage threshold is determined according to the rated voltage of the external grid.

During the operation of the charging station (local grid), the energy storage components are adjusted to store energy or discharge externally, so as to adjust the power supply and charging balance of the local grid (charging station) to meet the charging needs of vehicles.

According to the needs of charging vehicles in different periods, when one or more charging vehicles need to be charged, the charging cabinet starts to work, charges the charging vehicles, monitors and controls the components to start work, monitors the voltage on the power side of the wiring components in real time, and monitors the energy storage components at the same time. battery voltage status.

Therefore, as the number of charging vehicles changes or the demand for charging vehicles changes, combined with the voltage change on the power supply side of the wiring assembly and the power supply capacity of the transformer, the above logical method is used to monitor and adjust the energy storage component to charge itself and discharge to the outside in real time, so as to alleviate the charging station (local Grid) power supply and electricity consumption balance, to meet the electricity demand for vehicle charging.

The voltage real-time monitoring and energy storage and discharge of the above grid and energy storage components are not only suitable for special energy storage, but also suitable for energy storage and external discharge of electric vehicle energy storage batteries when they are idle, so as to ease the power supply and electricity demand of the grid.

On the other hand, Fig. 6 is a schematic structural diagram of a charge and discharge automatic balance device for a charging station provided in an embodiment of the present application. As shown in Fig. 6, the present invention provides a charge and discharge automatic balance device for a charging station, which is applied in a charging station , the charging station includes a wiring assembly, an electric energy bidirectional conversion assembly, an energy storage assembly, and a monitoring and control assembly, one end of the electric energy bidirectional conversion assembly is connected to the low-voltage side of the transformer through the wiring assembly, and the high-voltage side of the transformer is connected to the External grid connection;

The devices include:

The working voltage acquisition module 710 is configured to perform real-time monitoring of the first working voltage of the transformer connected to the charging station and the state parameters of the energy storage components in the charging station by configuring the monitoring and control components in the charging station;

The first comparison module 720 is configured to compare the first operating voltage with a preset grid voltage threshold;

The second comparison module 730 is configured to compare the state parameter with a preset energy storage threshold, where the preset energy storage threshold includes a preset first state threshold;

The power supply module 740 is configured to execute when the first working voltage is lower than the preset power grid voltage threshold and the state parameter is higher than the preset first state threshold, then the monitoring and control component is connected to the transformer and the The power bidirectional conversion component between the energy storage components sends a power supply signal to the transformer to control the power bidirectional conversion component to be in the first power supply mode, so that the energy storage component supplies power to the grid corresponding to the transformer, so as to boost the transformer The first working voltage.

In yet another aspect, Fig. 7 is a schematic structural diagram of a charging station provided by the embodiment of the present application. components and monitoring and control components, one end of the electric energy bidirectional conversion component is connected to the low-voltage side of the transformer through the wiring component, and the high-voltage side of the transformer is connected to the external power grid;

The charging station may implement the above-mentioned method for automatically balancing charge and discharge of the charging station.

The device provided in the above embodiments can execute the method provided in any embodiment of the present application, and has corresponding functional modules and beneficial effects for executing the method. For technical details not exhaustively described in the above embodiments, please refer to a method for automatically balancing charge and discharge of a charging station provided in any embodiment of the present application.

This embodiment also provides a computer-readable storage medium, in which computer-executable instructions are stored, and the computer-executable instructions are loaded by a processor to execute the method for automatically balancing charging and discharging in a charging station described in this embodiment.

This embodiment also provides a computer program product or computer program, where the computer program product or computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device executes the above-mentioned method for automatic charging and discharging balance of the charging station.

This embodiment also provides an electronic device, the electronic device includes a processor and a memory, wherein the memory stores a computer program, and the computer program is suitable for being loaded by the processor and executing the charging and discharging automatic charging station described above in this embodiment balanced approach.

The device may be a computer terminal, a mobile terminal, or a server, and the device may also participate in forming the apparatus or system provided by the embodiments of the present application. FIG. 8 is a schematic diagram of the hardware structure of a device for implementing the method provided by the embodiment of the present application. As shown in FIG. 8, the server 12 may include one or more (1202a, 1202b are used in the figure) ,..., 1202n to show) processor 1202 (processor 1202 may include but not limited to processing devices such as microprocessor MCU or programmable logic device FPGA, etc.), memory 1204 for storing data, and a memory 1204 for communication function The transfer device 1206. In addition, it may also include: an input/output interface (I/O interface), a network interface, a power supply, and the like. Those of ordinary skill in the art can understand that the structure shown in FIG. 8 is only a schematic diagram, which does not limit the structure of the above-mentioned electronic device. For example, server 12 may also include more or fewer components than shown in FIG. 8 , or have a different configuration than shown in FIG. 8 .

It should be noted that the one or more processors 1202 and/or other data processing circuits described above may generally be referred to herein as data processing circuits. The data processing circuit may be implemented in whole or in part as software, hardware, firmware or other arbitrary combinations. In addition, the data processing circuit may be a single independent processing module, or be fully or partially integrated into any one of the other elements in the server 11 .

The memory 1204 can be used to store software programs and modules of application software, such as the program instruction/data storage device corresponding to the method in the embodiment of the present application, and the processor 1202 executes various Functional application and data processing, that is, to realize the above-mentioned method for generating temporal behavior capture frames based on self-attention network. The memory 1204 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 1204 may further include memory located remotely relative to the processor 1202, and these remote memories may be connected to the server 12 through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The transmission device 1206 is used to receive or send data via a network. The specific example of the above-mentioned network may include a wireless network provided by the communication provider of the server 12 . In one example, the transmission device 1206 includes a network adapter (Network Interface Controller, NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 1206 may be a radio frequency (Radio Frequency, RF) module, which is used to communicate with the Internet in a wireless manner.

The display can be, for example, a touchscreen liquid crystal display (LCD) that enables a user to interact with the server 12 user interface.

This specification provides method operation steps such as embodiments or flowcharts, but more or less operation steps may be included based on routine or non-creative work. The steps and order listed in the embodiments are only one way of execution order of many steps, and do not represent the only execution order. When an actual system or interrupt product is executed, it can be executed sequentially or in parallel according to the methods shown in the embodiments or drawings (for example, in a parallel processor or multi-thread processing environment).

The structure shown in this embodiment is only a part of the structure related to the solution of this application, and does not constitute a limitation on the equipment to which the solution of this application is applied. The specific equipment may include more or more fewer components, or combine certain components, or have a different arrangement of components. It should be understood that the methods, devices, etc. disclosed in this embodiment may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of modules is only a division of logic functions. In actual implementation, there may be other division methods, for example, multiple units or components can be combined or integrated. to another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection of devices or unit modules.

Based on this understanding, the technical solution of the present application is essentially or part of the contribution to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including instructions for making a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods in the various embodiments of the present application. And aforementioned storage medium comprises: U disk, removable hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random AccessMemory), magnetic disk or CD etc. various mediums that can store program codes.

Those skilled in the art can further realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed in this specification can be implemented by electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the relationship between hardware and software Interchangeability. In the above description, the composition and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be applied to the foregoing embodiments The technical solutions described in the examples are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the application.

Claims (9)

1. The charging station is characterized by comprising a wiring component, an electric energy bidirectional conversion component, an energy storage component and a monitoring and control component, wherein one end of the electric energy bidirectional conversion component is connected with the low-voltage side of a transformer through the wiring component, and the high-voltage side of the transformer is connected with an external power grid;

the method comprises the following steps:

monitoring a first working voltage of a transformer connected with a charging station and state parameters of an energy storage assembly in the charging station in real time by configuring a monitoring and control assembly in the charging station, wherein the state parameters of the energy storage assembly represent electric energy stored in the energy storage assembly;

comparing the first working voltage with a preset grid voltage threshold;

comparing the state parameter with a preset energy storage threshold value, wherein the preset energy storage threshold value comprises a preset first state threshold value;

when the first working voltage is smaller than a preset power grid voltage threshold and the state parameter is higher than the preset first state threshold, the monitoring and control component sends a transformer power supply signal to an electric energy bidirectional conversion component connected between the transformer and the energy storage component to control the electric energy bidirectional conversion component to be in a first power supply mode, so that the energy storage component supplies power to a power grid corresponding to the transformer to improve the first working voltage of the transformer;

when the state parameter of the energy storage assembly monitored by the monitoring and control assembly is lower than a preset first state threshold and higher than a preset second state threshold, and the first working voltage is higher than a preset grid voltage threshold, the monitoring and control assembly sends a charging signal to the electric energy bidirectional conversion assembly to control the electric energy bidirectional conversion assembly to be in a first charging mode, so that the electric energy assembly is charged by a grid connected with the transformer.

2. The charging station charge-discharge automatic balancing method according to claim 1, further comprising:

when the first working voltage is larger than the preset grid voltage threshold or the state parameter is lower than the preset first state threshold, the monitoring and control component sends a power supply stopping signal to the electric energy bidirectional conversion component to control the electric energy bidirectional conversion component to be disconnected, so that the energy storage component stops supplying power to the transformer.

3. The charging station charge-discharge automatic balancing method according to claim 2, wherein the predetermined energy storage threshold further comprises a predetermined second state threshold, and the predetermined second state threshold is smaller than the predetermined first state threshold;

the method further comprises the following steps:

when the state parameter of the energy storage assembly monitored by the monitoring and control assembly is lower than a preset second state threshold value, the monitoring and control assembly sends a charging signal to the electric energy bidirectional conversion assembly to control the electric energy bidirectional conversion assembly to be in a forced charging mode, so that a power grid connected with the transformer charges the energy storage assembly.

4. The charging station charge-discharge automatic balancing method according to claim 3, further comprising:

when the state parameter of the energy storage assembly monitored by the monitoring and control assembly is lower than a preset first state threshold and higher than a preset second state threshold, and the first working voltage is lower than a preset grid voltage threshold, the monitoring and control assembly sends a power supply stopping signal to the electric energy bidirectional conversion assembly to control the electric energy bidirectional conversion assembly to be disconnected, so that the energy storage assembly stops charging.

5. The charging station charge-discharge automatic balancing method according to claim 1, further comprising:

when the state parameter of the energy storage assembly monitored by the monitoring and control assembly is lower than a preset first state threshold and higher than a preset second state threshold, and the first working voltage is higher than a preset grid voltage threshold, the monitoring and control assembly sends a charging signal to the electric energy bidirectional conversion assembly to control the electric energy bidirectional conversion assembly to be in a second charging mode, so that the electric grid connected with the transformer is full of electricity for the energy storage assembly.

6. The charging station charge-discharge automatic balancing method according to claim 1, wherein the charging station further comprises a charging cabinet, one end of the charging cabinet is connected with the wiring assembly, and the other end of the charging cabinet is used for connecting a charging vehicle;

the method further comprises the following steps:

when the first working voltage is larger than a preset power grid voltage threshold value and smaller than the rated voltage of an external power grid, and the state parameter is higher than the preset first state threshold value, the monitoring and control assembly sends a vehicle charging signal to the electric energy bidirectional conversion assembly to control the electric energy bidirectional conversion assembly to be in a second power supply mode, so that the energy storage assembly supplies power to the charging vehicle.

7. The charging station charge-discharge automatic balancing method according to claim 6, wherein the predetermined grid voltage threshold is determined according to a rated voltage of the external grid.

8. The charging station charging and discharging automatic balancing device is characterized by being applied to a charging station, wherein the charging station comprises a wiring component, an electric energy bidirectional conversion component, an energy storage component and a monitoring and control component, one end of the electric energy bidirectional conversion component is connected with the low-voltage side of a transformer through the wiring component, and the high-voltage side of the transformer is connected with an external power grid;

the device comprises:

the charging system comprises an operating voltage acquisition module (710) configured to perform real-time monitoring of a first operating voltage of a transformer connected to a charging station and a state parameter of an energy storage component in the charging station by configuring a monitoring and control component in the charging station, the state parameter of the energy storage component representing electric energy stored in the energy storage component;

a first comparison module (720) configured to perform a comparison of the first operating voltage with a preset grid voltage threshold;

a second comparison module (730) configured to perform a comparison of the state parameter with a preset energy storage threshold, the preset energy storage threshold comprising a preset first state threshold;

a power supply module (740) configured to execute, when the first operating voltage is less than a preset grid voltage threshold and the state parameter is higher than the preset first state threshold, sending, by the monitoring and control component, a transformer power supply signal to a bidirectional electrical energy conversion component connected between the transformer and the energy storage component to control the bidirectional electrical energy conversion component to be in a first power supply mode, so that the energy storage component supplies power to a grid corresponding to the transformer to raise the first operating voltage of the transformer;

the charging module (750) is configured to execute that when the state parameter of the energy storage assembly monitored by the monitoring and control assembly is lower than a preset first state threshold and higher than a preset second state threshold, and the first working voltage is higher than a preset grid voltage threshold, the monitoring and control assembly sends a charging signal to the bidirectional electric energy conversion assembly to control the bidirectional electric energy conversion assembly to be in a first charging mode, so that a grid connected with the transformer charges the energy storage assembly.

9. A charging station is characterized by comprising a wiring component, an electric energy bidirectional conversion component, an energy storage component and a monitoring and control component, wherein one end of the electric energy bidirectional conversion component is connected with the low-voltage side of a transformer through the wiring component, and the high-voltage side of the transformer is connected with an external power grid;

the charging station may perform the charging station charge-discharge automatic balancing method according to any one of claims 1 to 7.

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