CN116834602B - Charging management methods, devices, equipment and media based on microgrid access control - Google Patents

Abstract

The invention discloses a charging management method, a device, equipment and a medium based on micro-grid access control, wherein the method comprises the following steps: if the input charging requirement is received, acquiring current port state information, and acquiring corresponding charging cost information by combining the current time; selecting a charging strategy matched with the charging requirement and the charging cost information according to the strategy selection rule and judging whether the charging strategy meets the corresponding limiting condition or not; if the charging strategy is met, controlling an input port electrically connected with the vehicle-mounted charging interface according to the charging strategy; and if the charging strategy is not satisfied, correspondingly controlling an input port electrically connected with the vehicle-mounted charging interface after the charging strategy is adjusted. According to the charging management method, the charging strategy which is most matched with the charging requirement is intelligently selected according to the charging cost information and the current port state information, and charging output is carried out through combination of the mains supply, the energy storage battery and the photovoltaic, so that the fast charging is realized, the situation that the load of the mains supply is exceeded is avoided, and the charging management efficiency is improved.

Description

Charging management methods, devices, equipment and media based on microgrid access control

Technical field

The present invention relates to the technical field of intelligent charging management, and in particular to a charging management method, device, equipment and medium based on microgrid access control.

Background technique

With the development of technology and the gradual improvement of environmental protection concepts, the number of new energy electric vehicles has also grown rapidly, and fast charging of new energy electric vehicles has become a technical problem that must be solved in reality. In traditional technical methods, charging stations are usually built to charge new energy vehicles. However, low-power charging stations will cause the charging time of new energy vehicles to be too long; while high-power charging stations will cause the mains power load to be too high, affecting electricity consumption. Safety, and the price of municipal electricity changes with time. Existing charging stations cannot make a balanced choice between charging speed and charging price according to the charging needs of new energy vehicles, resulting in low charging management efficiency. Therefore, there is a problem that efficient management cannot be performed during the charging process of new energy electric vehicles in the existing technical methods.

Contents of the invention

Embodiments of the present invention provide a charging management method, device, equipment and medium based on microgrid access control, aiming to solve the problem of inability to perform efficient management during the charging process of cars in the existing technical methods.

In a first aspect, embodiments of the present invention provide a charging management method based on microgrid access control, wherein the method is applied to a charging management terminal, and the charging management terminal is connected to a mains input port and an energy storage battery input port respectively. The port and the photovoltaic input port are electrically connected. The mains input port, the energy storage battery input port and the photovoltaic input port are all electrically connected to the vehicle charging interface through the DC bus. The mains input port is connected to the mains. AC/DC converter DC port, the method includes:

If the input charging request is received, the current port status information is obtained;

Obtain charging cost information corresponding to the current time according to the current port status information;

Select a charging strategy that matches the charging demand and the charging cost information according to the strategy selection rules;

Determine whether the charging strategy satisfies the restriction conditions corresponding to the current port status information;

If the charging strategy meets the restriction condition, control the input port electrically connected to the vehicle charging interface according to the charging strategy;

If the charging strategy does not meet the restriction condition, adjust the charging strategy according to the current port status information to obtain a charging adjustment strategy that satisfies the restriction condition;

The input port electrically connected to the vehicle charging interface is controlled according to the charging adjustment strategy.

In a second aspect, embodiments of the present invention also provide a charging management device based on microgrid access control, wherein the device is configured in a charging management terminal, and the charging management terminal is connected to the mains input port and the energy storage battery respectively. The input port and the photovoltaic input port are electrically connected. The mains input port, the energy storage battery input port and the photovoltaic input port are all electrically connected to the vehicle charging interface through the DC bus. The mains input port is connected to the mains. The DC port of the AC/DC converter, the device is used to perform the charging management method based on microgrid access control described in the first aspect, and the device includes:

The port status information acquisition unit is used to obtain the current port status information if the input charging demand is received;

A charging cost information acquisition unit, configured to acquire charging cost information corresponding to the current time according to the current port status information;

A charging strategy matching unit, configured to select a charging strategy that matches the charging demand and the charging cost information according to the strategy selection rules;

A judgment unit configured to judge whether the charging strategy satisfies the restriction conditions corresponding to the current port status information;

A first charging control unit configured to control an input port electrically connected to the vehicle charging interface according to the charging strategy if the charging strategy satisfies the restriction condition;

A charging strategy adjustment unit, configured to adjust the charging strategy according to the current port status information if the charging strategy does not meet the restriction conditions, to obtain a charging adjustment strategy that satisfies the restriction conditions;

A second charging control unit is configured to control an input port electrically connected to the vehicle charging interface according to the charging adjustment strategy.

In a third aspect, embodiments of the present invention also provide a computer device, wherein the device includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory complete communication with each other through the communication bus. ;

Memory, used to store computer programs;

The processor is configured to implement the steps of the charging management method based on microgrid access control described in the first aspect when executing the program stored in the memory.

In a fourth aspect, embodiments of the present invention further provide a computer-readable storage medium on which a computer program is stored, wherein when the computer program is executed by a processor, the microgrid-based connection as described in the first aspect is implemented. Steps into the controlled charging management method.

Embodiments of the present invention provide a charging management method, device, equipment and medium based on microgrid access control. The method includes: if the input charging demand is received, obtain the current port status information; obtain and obtain the current port status information according to the current port status information. Charging cost information corresponding to the current time; select a charging strategy that matches the charging demand and charging cost information according to the strategy selection rules; determine whether the charging strategy satisfies the restriction conditions corresponding to the current port status information; if the restriction conditions are met, according to the charging strategy Control the input port electrically connected to the vehicle charging interface; if not satisfied, adjust the charging strategy and then control the input port electrically connected to the vehicle charging interface according to the adjusted charging adjustment strategy. The above-mentioned charging management method based on microgrid access control intelligently selects the charging strategy that best matches the charging demand based on charging cost information and current port status information, and implements charging output by combining mains power with energy storage batteries and photovoltaics to achieve fast charging. At the same time, it avoids exceeding the mains load and improves the charging management efficiency.

Description of the drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention, which are of great significance to this field. Ordinary technicians can also obtain other drawings based on these drawings without exerting creative work.

Figure 1 is a method flow chart of a charging management method based on microgrid access control provided by an embodiment of the present invention;

Figure 2 is a schematic diagram of the application scenario of the charging management method based on microgrid access control provided by the embodiment of the present invention;

Figure 3 is a schematic block diagram of a charging management device based on microgrid access control provided by an embodiment of the present invention;

Figure 4 is a schematic block diagram of a computer device provided by an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

It should be understood that, when used in this specification and the appended claims, the terms "comprises" and "comprises" indicate the presence of described features, integers, steps, operations, elements and/or components but do not exclude the presence of one or The presence or addition of multiple other features, integers, steps, operations, elements, components and/or collections thereof.

It should also be understood that the terminology used in the description of the present invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly dictates otherwise.

It will be further understood that the term "and/or" as used in the specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items. .

Please refer to Figures 1 and 2. As shown in the figures, embodiments of the present invention provide a charging management method based on microgrid access control. The charging management method based on microgrid access control is applied to charging management terminals. In 10, the charging management terminal 10 is electrically connected to the mains input port 20, the energy storage battery input port 30 and the photovoltaic input port 40. At the same time, the mains input port 20, the energy storage battery input port 30 and the photovoltaic input port 40 are electrically connected. They are all electrically connected to the vehicle-mounted charging interface 50 through the DC bus 11. The mains input port 20 is the DC port of the AC/DC converter connected to the mains; the vehicle-mounted charging interface 50 is used for charging the new energy vehicle. The interface for charging the vehicle-mounted rechargeable battery; the charging management terminal 10 can be a control terminal installed in a multi-functional charging station for microgrid access control, and the charging management terminal can control the mains input port 20, the energy storage battery input port 30 and the photovoltaic The input port 40 and the vehicle charging interface 50 are electrically connected and controlled, so that the new energy vehicle can obtain the corresponding charging power through the vehicle charging interface 50 and charge the vehicle charging battery. In practical applications, the mains input port 20 is The DC port of the AC/DC converter connected to the mains power, the mains input port 20, the photovoltaic input port 40 and the vehicle charging interface 50 are all connected to the DC bus. The DC bus is correspondingly connected to the vehicle charging interface 50. The microgrid system uses DC The busbar serves as the overall output connection line. The mains input port 20 is the circuit port configured in the multifunctional charging station to connect to the external mains. The energy storage battery input port 30 is the circuit port of the energy storage battery installed in the multifunctional charging station. The photovoltaic input port 40 is It is a circuit interface configured in a multi-functional charging station to connect to photovoltaic power generation panels. The photovoltaic power generation panels can be arranged on the top of the multi-functional charging station. A variety of charging piles of different specifications can be configured in the multi-functional charging station. The output end of the charging pile can be connected to the vehicle The charging interfaces 50 are electrically connected. For the specific structure of the multifunctional charging station, please refer to the patent document with application number CN202310523250.2. As shown in Figure 1, the method includes steps S110~S170.

S110. If the input charging demand is received, obtain the current port status information.

If the input charging request is received, the current port status information is obtained. The charging management terminal can receive charging requirements input by users. For example, users of new energy electric vehicles are users. Users can send charging requirements to the charging management terminal through smart terminals such as mobile phones. The charging requirements include how the user wants to proceed. Charging, for example, charging requirements can include optimal price, minimum time or balance, which is to find a balance between price and time, hoping for a cheaper price and shorter charging time. After receiving the charging demand, the charging management terminal can obtain the current port status information, that is, the charging management terminal obtains: the mains load proportion corresponding to the mains input port, the energy storage power and photovoltaic input corresponding to the energy storage battery input port The photovoltaic power supply corresponding to the port. Since the technical method of this application is to connect smart charging stations to microgrids, microgrids are usually grids configured to meet the needs of residents or offices in cities. Therefore, the available load of microgrids is usually low and cannot satisfy all charging piles at the same time. For fast charging requirements, it is necessary to obtain the mains load proportion to control the overall load connected to the mains for charging. The energy storage power is the power information of the energy storage battery connected to the energy storage battery input port. The photovoltaic power source is the current generated by the photovoltaic power generation panel through photovoltaic power generation. The power generated by the photovoltaic power generation panel is converted into rated voltage input. A larger value of photovoltaic power indicates that the power generation capacity of the photovoltaic power generation panel is stronger (when the light is stronger or the lighting angle is direct). A smaller value of photovoltaic power indicates that the power generation capacity of the photovoltaic power generation panel is weaker (on a cloudy day or when the lighting angle is direct). (not exposed to direct sunlight), if the photovoltaic power value is zero, it means that the photovoltaic power generation panel is not generating electricity at this time (it is at night).

When the energy storage battery is not outputting current, if the energy storage power is lower than the first power threshold and the value of the photovoltaic power is not zero, the charging management terminal controls the output end of the photovoltaic power generation panel to be connected to the energy storage battery, thereby passing The photovoltaic power generation panel charges the energy storage battery; if the energy storage power is lower than the first power threshold and the value of the photovoltaic power is zero, the charging management terminal controls the mains output terminal to connect to the energy storage battery, and the energy storage battery is charged through the mains power. The battery is charged; if the stored power is lower than the second power threshold, the charging management terminal controls the output end of the photovoltaic power generation panel and the mains output end to connect to the energy storage battery at the same time, and the energy storage is simultaneously connected through the mains power and the photovoltaic power generation panel. The battery is charged. The second power threshold is smaller than the first power threshold. For example, the first power threshold is configured to be 80%, and the second power threshold is configured to be 30%.

S120. Obtain charging cost information corresponding to the current time according to the current port status information.

Obtain charging cost information corresponding to the current time according to the current port status information. The charging cost information includes a first cost value and a second cost value. The corresponding charging cost information can be obtained according to the current port status information and the current time. The first cost value in the charging cost information is the cost value of the mains input port output to the vehicle charging interface, and the second cost value in the charging cost information is the storage cost value. The cost value corresponds to the battery outputting DC current and the photovoltaic power generation panel outputting current to the vehicle charging interface. When charging new energy vehicles, the multi-functional charging station can be configured with two charging modes: AC charging and DC charging. AC charging uses AC power output from the mains to charge new energy vehicles, while DC charging uses energy storage batteries as the basis. The main output DC power charges the new energy vehicle. If the value of the photovoltaic power corresponding to the photovoltaic power generation panel is not zero, the DC power output by the photovoltaic power generation panel will be converged to the DC bus to auxiliary charge the new energy vehicle (the photovoltaic power generation panel output The direct current is less than the direct current output by the energy storage battery).

In a specific embodiment, step S120 includes sub-steps: determining the peak and valley period of electricity consumption corresponding to the current time and obtaining the current market power price; calculating the current market power price corresponding to the preset first cost calculation formula. A first cost value; calculate a second cost value corresponding to the photovoltaic power source in the current port status information and the current commercial power price according to a preset second cost calculation formula.

Specifically, the corresponding peak and valley period of electricity consumption can be determined according to the current time, and the corresponding current market power price can be determined according to the peak and valley period of electricity consumption. Generally speaking, electricity prices are divided into market electricity prices in peak periods (07:00-11:00 and 19:00-23:00), market electricity prices in valley periods (23:00-7:00) and flat periods. (11:00-19:00), the market power prices corresponding to different time periods are different.

For example, if the current time is 9:15, the corresponding peak and valley period of electricity consumption is determined as the peak period, and the market power price (commercial electricity consumption) of the peak period is further determined to be 1.5/kW·h.

The first cost value corresponding to the current city power price can be calculated according to the first cost calculation formula. Since there is power loss in the process of connecting the city power through the city power input port and outputting it to the vehicle rechargeable battery through the vehicle charging interface, the first cost value can be calculated through the third cost calculation formula. A cost calculation formula calculates the actual cost of electric energy input from the vehicle charging interface. For example, the first cost calculation formula can be: C ₁ =D×a, where a is the coefficient value in the first cost calculation formula, for example, set a to 1.25, D is the current market power price, and C ₁ is the calculated First cost value.

When the energy storage battery is outputting current, it needs to be charged synchronously through the mains. Therefore, in order to evaluate the actual cost of the DC power output by the photovoltaic power generation panel and the energy storage battery, the second cost calculation formula can be used to calculate the cost of the DC power and the photovoltaic power supply. The second cost value corresponding to the current market power price.

For example, the second cost calculation formula can be expressed by formula (1):

(1);

Among them, b is the preset coefficient value, such as b is set to 1.5, r is the preset photovoltaic panel cost sharing cost value, G is the photovoltaic power supply, U is the rated voltage corresponding to the photovoltaic power supply, D is the current market power price, t is the preset minimum DC current value, and C ₂ is the second cost value.

S130. Select a charging strategy that matches the charging demand and the charging cost information according to the strategy selection rules.

A charging strategy matching the charging demand and the charging cost information is selected according to the strategy selection rules. The strategy selection rule is the rule information used to match and select the corresponding charging strategy. The charging strategy that matches the charging demand and charging cost information can be obtained according to the strategy selection rule. There are multiple charging strategies preset in the strategy selection rule. For example, a fast power storage output strategy, an AC output strategy, and a slow power storage output strategy can be set in advance.

In a specific embodiment, step S130 includes sub-steps: determining whether the charging demand is the minimum time or the optimal price; determining whether the first cost value in the charging cost information is greater than the second cost value; if The charging demand is the minimum time, and a fast power storage output strategy is obtained from the strategy selection rule as a matching charging strategy; if the charging demand is the optimal price and the first cost value is not greater than the second Cost value, obtain the AC output strategy from the strategy selection rule as the matching charging strategy; if the charging demand is the optimal price and the first cost value is greater than the second cost value, select from the strategy The slow power storage output strategy is obtained from the rules as the matching charging strategy; if the charging demand is not the minimum time or the optimal price, the AC output strategy is obtained from the strategy selection rules as the matching charging strategy.

Specifically, it can be judged whether the charging demand is the minimum time or the optimal price, and then further judged whether the first cost value is greater than the second cost value; if the charging demand is the minimum time, charging needs to be carried out in the fastest way, and fast storage is selected. The electricity output strategy is a matching charging strategy, and the fast electricity storage output strategy will control the photovoltaic power generation panels and energy storage batteries to output and charge with the maximum DC current; if the charging demand is the optimal price, and the first cost value is not greater than the second cost value, then select the AC output strategy as the matching charging strategy. The AC output strategy will control the mains power for AC charging; if the charging demand is the optimal price and the first cost value is greater than the second cost value, then select slow power storage The output strategy is a matching charging strategy. The slow power storage output strategy will control the photovoltaic power generation panels and energy storage batteries to output and charge with a default low DC current; if the charging demand is not the minimum time or the optimal price, it also indicates the charging demand. For balance, the AC output strategy is selected as the matching charging strategy.

S140. Determine whether the charging strategy satisfies the restriction conditions corresponding to the current port status information.

Determine whether the charging strategy satisfies the restriction conditions corresponding to the current port status information. Furthermore, in order to avoid overloading the multi-function charging station, it is necessary to determine the restriction conditions corresponding to the current port status information, and determine whether the matched charging strategy meets the corresponding restriction conditions.

In a specific embodiment, step S140 includes the sub-step: if the charging strategy is an AC output strategy, determine whether the idle ratio corresponding to the mains load ratio in the current port status information is greater than that corresponding to the AC output strategy. output ratio to determine whether the charging strategy satisfies the restriction; if the charging strategy is a power storage output strategy, determine whether the energy storage amount in the current port status information is greater than the amount corresponding to the charging strategy. The power threshold is used to determine whether the charging strategy meets the restriction conditions.

Specifically, if the charging strategy is an AC output strategy, the available proportion corresponding to the mains load proportion in the current port status information can be obtained. The mains load proportion is the current load and the maximum load that the microgrid can withstand. The ratio between loads. For example, if the mains load ratio is 0.75, the idle ratio is 0.25. Determine whether the idle proportion is greater than the output proportion corresponding to the AC output strategy. If the output proportion corresponding to the AC output strategy is 0.3, then the idle proportion is not greater than the output proportion, and it is determined that the restriction conditions are not met; if the output proportion corresponding to the AC output strategy is If the output ratio is 0.2, then the free ratio is greater than the output ratio, and it is determined that the restriction conditions are met.

If the charging strategy is a power storage output strategy, first determine the power threshold corresponding to the charging strategy. For example, the first output power threshold corresponding to the fast power storage output strategy is 0.5, and the second output power threshold corresponding to the slow power storage output strategy. The threshold is 0.25, and the power threshold is the lowest threshold that ensures that the energy storage battery can charge and output according to the corresponding charging strategy. At this time, it can be determined whether the energy storage power in the current port status information is greater than the corresponding power threshold. If it is greater than the corresponding power threshold, it is determined that the restriction condition is met; if it is not greater than the corresponding power threshold, it is determined that the restriction condition is not met. .

S150. If the charging strategy meets the restriction condition, control the input port electrically connected to the vehicle charging interface according to the charging strategy.

If the charging strategy satisfies the restriction condition, the input port electrically connected to the vehicle charging interface is controlled according to the charging strategy. If the charging strategy meets the corresponding restriction conditions, the charging management terminal can electrically connect the corresponding input port to the vehicle charging interface according to the control strategy, thereby outputting electric energy through the vehicle charging interface and charging the vehicle charging battery.

Specifically, if the charging strategy is an AC output strategy, the mains input port is electrically connected to the vehicle charging interface, and AC power is input through the mains input port to charge the vehicle charging battery; if the charging strategy is a slow power storage output strategy , then the photovoltaic input port and the energy storage battery input port are electrically connected to the vehicle charging interface at the same time, and the default low DC current is output to charge the vehicle charging battery; if the charging strategy is a fast power storage output strategy, then the photovoltaic input port and The energy storage battery input port is electrically connected to the vehicle charging interface at the same time, and outputs the maximum DC current to charge the vehicle charging battery.

S160. If the charging strategy does not meet the restriction condition, adjust the charging strategy according to the current port status information to obtain a charging adjustment strategy that satisfies the restriction condition.

If the charging strategy does not meet the restriction condition, the charging strategy is adjusted according to the current port status information to obtain a charging adjustment strategy that satisfies the restriction condition. If the charging strategy does not meet the corresponding restrictions, the charging parameters configured in the charging strategy can be adjusted according to the current port status information, so that the charging parameters in the charging strategy match the current port status information, so that the adjusted charging adjustment The policy meets the constraints corresponding to the current port status information.

In a specific embodiment, step S160 includes the sub-step: if the charging strategy is an AC output strategy, adjust the charging in the charging strategy according to the idle ratio corresponding to the mains load ratio in the current port status information. The parameters match the idle ratio; if the charging strategy is a power storage output strategy, the charging parameters in the charging strategy are adjusted according to the energy storage quantity in the current port status information to match the energy storage quantity. .

Specifically, if the charging strategy is an AC output strategy, the charging parameters in the charging strategy are adjusted according to the idle ratio corresponding to the mains load ratio in the current port status information, so that the adjusted charging parameters match the idle ratio. For example, if the idle ratio is 0.25, the default current output by the current AC output strategy corresponds to an output ratio of 0.3, and the default current I ₁ is the charging parameter in the AC output strategy; according to the idle ratio and the output ratio The default current I ₁ in the AC output strategy is adjusted proportionally by the ratio between the ratios. For example, the new charging parameter can be adjusted to I ₁ ×0.25/0.3, thereby adjusting the charging parameters in the AC output strategy.

If the charging strategy is a power storage output strategy, the charging parameters in the charging strategy can be adjusted according to the energy storage quantity in the current port status information, so that the adjusted charging parameters match the energy storage quantity. For example, the energy storage power is 0.45, the first output power threshold corresponding to the fast power storage output strategy is 0.5, and the default DC output current in the fast power storage output strategy is I ₂ . The default current I ₁ in the AC output strategy can be adjusted proportionally according to the ratio between the energy storage capacity and the output ratio. For example, the new charging parameter can be adjusted to I ₂ ×0.45/0.5 to achieve rapid energy storage. The charging parameters in the output strategy are adjusted. The method of adjusting the charging parameters in the slow power storage output strategy is the same as the method of adjusting the charging parameters in the fast power storage output strategy, and will not be described again here.

S170. Control the input port electrically connected to the vehicle charging interface according to the charging adjustment strategy.

The input port electrically connected to the vehicle charging interface is controlled according to the charging adjustment strategy. After that, the input port electrically connected to the vehicle charging interface is controlled according to the charging adjustment strategy. The specific control method is the same as the above step S150. After the corresponding input port is electrically connected to the vehicle charging interface, the corresponding electric energy can be output according to the charging parameters configured in the charging adjustment strategy to charge the vehicle charging battery.

In the charging management method, device, equipment and medium based on microgrid access control provided by the embodiment of the present invention, the method includes: if the input charging demand is received, obtain the current port status information; obtain and Charging cost information corresponding to the current time; select a charging strategy that matches the charging demand and charging cost information according to the strategy selection rules; determine whether the charging strategy satisfies the restriction conditions corresponding to the current port status information; if the restriction conditions are met, according to the charging strategy Control the input port electrically connected to the vehicle charging interface; if not satisfied, adjust the charging strategy and then control the input port electrically connected to the vehicle charging interface according to the adjusted charging adjustment strategy. The above-mentioned charging management method based on microgrid access control intelligently selects the charging strategy that best matches the charging demand based on charging cost information and current port status information, and implements charging output by combining mains power with energy storage batteries and photovoltaics to achieve fast charging. At the same time, it avoids exceeding the mains load and improves the charging management efficiency.

Embodiments of the present invention also provide a charging management device based on microgrid access control. The charging management device based on microgrid access control can be configured in a charging management terminal. The charging management device based on microgrid access control can be used To execute any embodiment of the charging management method based on microgrid access control. Specifically, please refer to FIG. 3 , which is a schematic block diagram of a charging management device based on microgrid access control provided by an embodiment of the present invention.

As shown in Figure 3, the charging management device 100 based on microgrid access control includes a port status information acquisition unit 110, a charging cost information acquisition unit 120, a charging strategy matching unit 130, a judgment unit 140, a first charging control unit 150, and a charging unit 150. Strategy adjustment unit 160 and second charging control unit 170.

The port status information obtaining unit 110 is configured to obtain current port status information if an input charging demand is received.

The charging cost information obtaining unit 120 is configured to obtain charging cost information corresponding to the current time according to the current port status information.

The charging strategy matching unit 130 is configured to select a charging strategy that matches the charging demand and the charging cost information according to the strategy selection rules.

The judging unit 140 is used to judge whether the charging strategy satisfies the restriction conditions corresponding to the current port status information.

The first charging control unit 150 is configured to control an input port electrically connected to the vehicle charging interface according to the charging strategy if the charging strategy satisfies the restriction condition.

The charging strategy adjustment unit 160 is configured to adjust the charging strategy according to the current port status information if the charging strategy does not meet the restriction conditions, and obtain a charging adjustment strategy that satisfies the restriction conditions.

The second charging control unit 170 is configured to control an input port electrically connected to the vehicle charging interface according to the charging adjustment strategy.

The charging management device based on microgrid access control provided by the embodiment of the present invention applies the above charging management method based on microgrid access control. If the input charging demand is received, the current port status information is obtained; according to the current port status The information obtains charging cost information corresponding to the current time; selects a charging strategy that matches the charging demand and charging cost information according to the strategy selection rules; determines whether the charging strategy satisfies the restriction conditions corresponding to the current port status information; if the restriction conditions are met, The input port electrically connected to the vehicle charging interface is controlled according to the charging strategy; if it is not satisfied, the charging strategy is adjusted and then the input port electrically connected to the vehicle charging interface is controlled according to the adjusted charging adjustment strategy. The above-mentioned charging management method based on microgrid access control intelligently selects the charging strategy that best matches the charging demand based on charging cost information and current port status information, and implements charging output by combining mains power with energy storage batteries and photovoltaics to achieve fast charging. At the same time, it avoids exceeding the mains load and improves the charging management efficiency.

The above charging management device based on microgrid access control can be implemented in the form of a computer program, and the computer program can run on the computer device as shown in Figure 4.

Please refer to Figure 4. Figure 4 is a schematic block diagram of a computer device provided by an embodiment of the present invention. The computer device may be used to execute a charging management method based on microgrid access control to control the electrical connection between the mains input port 20 , the energy storage battery input port 30 and the photovoltaic input port 40 and the vehicle charging interface 50 Management terminal.

Referring to Figure 4, the computer device 500 includes a processor 502, a memory and a network interface 505 connected through a communication bus 501, where the memory may include a storage medium 503 and an internal memory 504.

The storage medium 503 can store an operating system 5031 and a computer program 5032. When the computer program 5032 is executed, it can cause the processor 502 to execute a charging management method based on microgrid access control, where the storage medium 503 can be a volatile storage medium or a non-volatile storage medium.

The processor 502 is used to provide computing and control capabilities to support the operation of the entire computer device 500 .

The internal memory 504 provides an environment for the execution of the computer program 5032 in the storage medium 503. When the computer program 5032 is executed by the processor 502, it can cause the processor 502 to execute a charging management method based on microgrid access control.

The network interface 505 is used for network communication, such as providing transmission of data information, etc. Those skilled in the art can understand that the structure shown in Figure 4 is only a block diagram of a partial structure related to the solution of the present invention, and does not constitute a limitation on the computer equipment 500 to which the solution of the present invention is applied. Specific computer equipment 500 may include more or fewer components than shown, some combinations of components, or a different arrangement of components.

The processor 502 is used to run the computer program 5032 stored in the memory to implement the corresponding functions in the above-mentioned charging management method based on microgrid access control.

Those skilled in the art can understand that the embodiment of the computer device shown in Figure 4 does not constitute a limitation on the specific configuration of the computer device. In other embodiments, the computer device may include more or fewer components than shown in the figure. Or combining certain parts, or different parts arrangements. For example, in some embodiments, the computer device may only include a memory and a processor. In such an embodiment, the structure and function of the memory and processor are consistent with the embodiment shown in FIG. 4 and will not be described again.

It should be understood that in the embodiment of the present invention, the processor 502 can be a central processing unit (Central Processing Unit, CPU), and the processor 502 can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), special-purpose Integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general processor may be a microprocessor or the processor may be any conventional processor.

In another embodiment of the invention a computer readable storage medium is provided. The computer-readable storage medium may be a volatile or non-volatile computer-readable storage medium. The computer-readable storage medium stores a computer program, wherein when the computer program is executed by the processor, the steps included in the above-mentioned charging management method based on microgrid access control are implemented.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the above-described equipment, devices and units can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here. Those of ordinary skill in the art can appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, computer software, or a combination of both. 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 functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technology solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered to be beyond the scope of the present invention.

In the several embodiments provided by the present invention, it should be understood that the disclosed equipment, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only for logical functions. In actual implementation, there may be other division methods, and units with the same functions may also be assembled into one unit. Units, such as multiple units or components, may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed may be an indirect coupling or communication connection through some interfaces, devices or units, or may be electrical, mechanical or other forms of connection.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiments of the present invention.

In addition, each functional unit in various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated units can be implemented in the form of hardware or software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention essentially contributes to the existing technology, 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 computer programmable computer. Reading the storage medium includes several instructions to cause a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in various embodiments of the present invention. The aforementioned computer-readable storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), magnetic disk or optical disk and other media that can store program code.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person familiar with the technical field can easily think of various equivalent methods within the technical scope disclosed in the present invention. Modifications or substitutions shall be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (6)

1. The utility model provides a charging management method based on little electric wire netting access control, its characterized in that, the method is applied to in the charging management terminal, charging management terminal carries out electric connection with commercial power input port, energy storage battery input port and photovoltaic input port respectively, commercial power input port, energy storage battery input port and photovoltaic input port all carry out electric connection through direct current bus and on-vehicle charging interface, commercial power input port is the alternating current/direct current converter direct current port that inserts with the commercial power, the method includes:

if the input charging requirement is received, acquiring current port state information;

acquiring charging cost information corresponding to the current time according to the current port state information;

selecting a charging strategy matched with the charging requirement and the charging cost information according to a strategy selection rule;

Judging whether the charging strategy meets the limiting condition corresponding to the current port state information or not;

if the charging strategy meets the limiting condition, controlling an input port electrically connected with the vehicle-mounted charging interface according to the charging strategy;

if the charging strategy does not meet the limiting condition, adjusting the charging strategy according to the current port state information to obtain a charging adjustment strategy meeting the limiting condition;

controlling an input port electrically connected with the vehicle-mounted charging interface according to the charging adjustment strategy;

the charging cost information includes a first cost value and a second cost value, and the obtaining the charging cost information corresponding to the current time according to the current port state information includes:

determining a peak-valley period of power consumption corresponding to the current time and acquiring the current commercial power price;

calculating a first cost value corresponding to the current commercial power price according to a preset first cost calculation formula;

calculating a second cost value corresponding to the photovoltaic power supply in the current port state information and the current commercial power price according to a preset second cost calculation formula;

the selecting a charging policy matched with the charging requirement and the charging cost information according to a policy selection rule includes:

Judging whether the charging requirement is the minimum time or the optimal price;

judging whether a first cost value in the charging cost information is larger than a second cost value;

if the charging requirement is the minimum time, acquiring a rapid electricity storage output strategy from the strategy selection rule as a matched charging strategy;

if the charging requirement is an optimal price and the first cost value is not greater than the second cost value, acquiring an alternating current output strategy from the strategy selection rule as a matched charging strategy;

if the charging requirement is an optimal price and the first cost value is larger than the second cost value, acquiring a slow electricity storage output strategy from the strategy selection rule as a matched charging strategy;

and if the charging requirement is not the minimum time or the optimal price, acquiring an alternating current output strategy from the strategy selection rule as a matched charging strategy.

2. The method for managing charging based on micro-grid access control according to claim 1, wherein the determining whether the charging policy satisfies the constraint condition corresponding to the current port state information comprises:

if the charging strategy is an alternating current output strategy, judging whether a space duty ratio corresponding to a mains supply duty ratio in the current port state information is larger than an output duty ratio corresponding to the alternating current output strategy or not so as to judge whether the charging strategy meets the limiting condition or not;

And if the charging strategy is a power storage output strategy, judging whether the stored power in the current port state information is greater than a power threshold corresponding to the charging strategy or not so as to judge whether the charging strategy meets the limiting condition or not.

3. The charging management method based on micro-grid access control according to claim 2, wherein the adjusting the charging policy according to the current port state information to obtain a charging adjustment policy satisfying the constraint condition includes:

if the charging strategy is an alternating current output strategy, adjusting charging parameters in the charging strategy to be matched with the idle duty ratio according to the idle duty ratio corresponding to the commercial power load duty ratio in the current port state information;

and if the charging strategy is a power storage output strategy, adjusting the charging parameters in the charging strategy to be matched with the energy storage electric quantity according to the energy storage electric quantity in the current port state information.

4. A charging management device based on micro-grid access control, wherein the device is configured in a charging management terminal, the charging management terminal is electrically connected with a mains input port, an energy storage battery input port and a photovoltaic input port respectively, the mains input port, the energy storage battery input port and the photovoltaic input port are all electrically connected with a vehicle-mounted charging interface through a direct current bus, the mains input port is an ac/dc converter direct current port connected with the mains, and the device is used for executing the charging management method based on micro-grid access control according to any one of claims 1-3, and the device comprises:

The port state information acquisition unit is used for acquiring current port state information if the input charging requirement is received;

the charging cost information acquisition unit is used for acquiring charging cost information corresponding to the current time according to the current port state information;

the charging strategy matching unit is used for selecting a charging strategy matched with the charging requirement and the charging cost information according to a strategy selection rule;

the judging unit is used for judging whether the charging strategy meets the limiting condition corresponding to the current port state information;

the first charging control unit is used for controlling an input port electrically connected with the vehicle-mounted charging interface according to the charging strategy if the charging strategy meets the limiting condition;

the charging strategy adjustment unit is used for adjusting the charging strategy according to the current port state information if the charging strategy does not meet the limiting condition, so as to obtain a charging adjustment strategy meeting the limiting condition;

the second charging control unit is used for controlling an input port electrically connected with the vehicle-mounted charging interface according to the charging adjustment strategy;

the charging cost information includes a first cost value and a second cost value, and the charging cost information obtaining unit includes:

The current commercial power price acquisition unit is used for determining the peak-valley period of the power consumption corresponding to the current time and acquiring the current commercial power price;

the first cost value calculation unit is used for calculating a first cost value corresponding to the current commercial power price according to a preset first cost calculation formula;

the second cost value calculation unit is used for calculating a second cost value corresponding to the photovoltaic power supply and the current commercial power price in the current port state information according to a preset second cost calculation formula;

the charging policy matching unit includes:

a demand judging unit for judging whether the charging demand is a minimum time or an optimal price;

a cost value judging unit configured to judge whether a first cost value in the charging cost information is greater than the second cost value;

the first strategy matching unit is used for acquiring a rapid power storage output strategy from the strategy selection rule as a matched charging strategy if the charging requirement is the minimum time;

the second policy matching unit is used for acquiring an alternating current output policy from the policy selection rule as a matched charging policy if the charging requirement is an optimal price and the first cost value is not greater than the second cost value;

The third strategy matching unit is used for acquiring a slow electricity storage output strategy from the strategy selection rule as a matched charging strategy if the charging requirement is an optimal price and the first cost value is larger than the second cost value;

and the fourth policy matching unit is used for acquiring an alternating current output policy from the policy selection rule as a matched charging policy if the charging requirement is not the minimum time or the optimal price.

5. A computer device, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus;

a memory for storing a computer program;

a processor for implementing the steps of the microgrid access control-based charge management method according to any one of claims 1 to 3 when executing a program stored on a memory.

6. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the microgrid access control based charging management method according to any one of claims 1-3.