A charging service system and method for a charging station

Abstract

The present invention discloses a charging service system and method for a charging station, belonging to the technical field of battery management systems. The control center is connected to a computing module, a data acquisition module, an input module, multiple charging modules, and a grid-connected inverter; the data acquisition module is connected to a photovoltaic energy storage module and a power grid; the photovoltaic energy storage module, the data acquisition module, and the power grid are all connected to the grid-connected inverter, and multiple charging modules are connected to the data acquisition module and the grid-connected inverter; the charging module is used for charging, parking instructions, and whether the car is allowed to park; the computing module is used to calculate the energy storage status of the photovoltaic energy storage module. The control center of the present invention implements an orderly restriction strategy from near to far for the charging module in the uncharged state. The charging module is orderly restricted from near to far from the grid-connected inverter to avoid random charging and reduce line loss. At the same time, the charging module implements different orderly charging strategies.

Description

Technical Field

[0001] The present invention relates to the field of energy storage and charging technology, and in particular to a charging service system and method for a charging station. Background Art

[0002] With the development of society and advancements in technology, electric vehicles have become a part of people's lives. This development necessitates the deployment of charging stations within specific areas to recharge electric vehicles. Photovoltaic energy storage charging stations account for a significant portion of the charging infrastructure. These stations primarily consist of photovoltaic power generation units, charging piles, energy storage units, and operation monitoring units.

[0003] At present, the energy storage units of photovoltaic energy storage charging stations are generally used for photovoltaic energy storage. When the electricity price is low, the energy storage units cannot store energy and the energy storage cannot be maximized. At the same time, the multiple charging piles in the existing charging stations are used in a disorderly manner. There are multiple uncharged charging piles between the adjacent charging piles. These uncharged charging piles will consume additional electricity when diverting power to the charging piles that need to be charged. According to current statistics, the loss is 5-8%, and the cost of using the charging station is high. In addition, the number of charging piles in the current charging station is the sum of the rated power of the charging station and the rated power of the charging piles. The capacity of the charging piles in the charging station is low, which is not conducive to actual use.

[0004] Based on this, the present invention designs a charging service system and method for a charging station to solve the above problems. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a charging service system and method for a charging station.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A charging service system for a charging station includes a control center;

[0008] The control center is connected with a calculation module, a data acquisition module, an input module, multiple charging modules and a grid-connected inverter;

[0009] The data acquisition module is connected to the photovoltaic energy storage module and the power grid;

[0010] The photovoltaic energy storage module, the data acquisition module and the power grid are all connected to the grid-connected inverter, and multiple charging modules are connected to the data acquisition module and the grid-connected inverter;

[0011] The charging module is used for charging, parking indication, and whether the car is allowed to park;

[0012] The calculation module is used to calculate the energy storage status of the photovoltaic energy storage module, and provide a control strategy for the grid-connected inverter to control the power grid based on the energy storage status, while formulating an orderly limitation strategy from near to far;

[0013] The data acquisition module is used to collect data from photovoltaic energy storage modules, grid-connected inverters, power grids, and multiple charging modules;

[0014] The control center gives the charging module in the uncharged state an instruction to execute the orderly limiting strategy from near to far. When the input module agrees with the orderly charging strategy, it gives the charging module an instruction to execute the orderly charging strategy.

[0015] The strategy of limiting in an orderly manner from near to far is that when there is a charging demand, the charging module closest to the grid-connected inverter and in an uncharged state enters the charging state.

[0016] Furthermore, the control center is also connected to an output module for issuing charging information and orderly charging strategies.

[0017] Furthermore, the control center is connected to a storage module for data storage.

[0018] Furthermore, the charging module includes a charging pile module, a vehicle identification module, a parking execution module and a parking indication module;

[0019] The charging pile module is used to charge the car when it is parked standard;

[0020] The vehicle identification module is used to identify whether the vehicle is parked in a standard manner;

[0021] The parking execution module is turned off when the charging pile module allows charging, or is turned on when the charging pile module does not allow charging;

[0022] The parking indication module is used to indicate to the charging pile module whether charging is allowed or not.

[0023] Furthermore, the charging module also includes a wake-up module and a sleep module;

[0024] The wake-up module is used to wake up the charging pile module in dormant state;

[0025] The sleep module is used to put the charging pile module in sleep mode when it is in the charging state.

[0026] Furthermore, there are two orderly charging strategies: the first one is that the charging module charges at maximum power, the electricity price remains unchanged, parking is free during charging, and parking fees incurred if the parking time exceeds the charging time are charged at the original price;

[0027] The second type is that the charging module charges at 80% of the maximum power, the electricity price is 80% of the original price, parking is free during charging, and the parking fee generated if the parking time exceeds the charging time is charged at the original price.

[0028] A method for using a charging service system at a charging station, specifically operating as follows:

[0029] Step 1: Determine the charging module that is open for charging through a near-to-far order restriction strategy, and the parking instruction module of the charging module instructs the charging pile module to allow charging;

[0030] Step 2: The control center controls the wake-up module to wake up the charging module. The vehicle identification module identifies whether the vehicle is parked correctly. The charging pile module gives a voice prompt. After the vehicle is parked correctly, the charging module enters the charging state.

[0031] Step 3: The user inputs the type of vehicle to be charged through the input module. The control center selects an orderly charging strategy based on the vehicle type and transmits the orderly charging strategy to the output module. The user confirms the orderly charging strategy.

[0032] Step 4: According to the orderly charging strategy, the control center controls the grid-connected inverter to transmit the power of the grid to the charging pile module when the electricity price is low, and then charges the car. When the electricity price is high, the data acquisition module collects the energy storage power data P1 in the photovoltaic energy storage module and determines whether the energy storage power data P1 is less than 20% of the rated power Prated of the photovoltaic energy storage module. If it is, the control center controls the grid-connected inverter to transmit the power of the photovoltaic energy storage module to the charging pile module. The grid-connected inverter also adds the power P2 of the grid to the total charging power P3=P1+P2, and the charging pile module charges the car. If it is not, the control center controls the grid-connected inverter to transmit the power of the grid to the charging pile module, and then charges the car.

[0033] Furthermore, when the energy storage power data P1 is less than 20% of the rated power Prated of the photovoltaic energy storage module, the grid-connected inverter transmits electricity to the grid when the electricity price is low.

[0034] Beneficial effects: The control center of the present invention implements an orderly limitation strategy from near to far for the charging modules in the uncharged state. The charging modules are orderly limited from near to far from the grid-connected inverter to avoid random charging, which can reduce line losses. At the same time, the charging modules implement different orderly charging strategies. More charging modules can be added while the rated power of the charging station remains unchanged, thereby increasing the capacity of the charging station and facilitating practical use. In addition, the photovoltaic energy storage module is applied to the charging station, and the access and deployment of the photovoltaic energy storage module and the power grid maximizes the use of photovoltaic green energy. When the electricity price is high, the photovoltaic energy storage module supplies power, effectively reducing the electricity cost of the charging station, while playing the role of peak shaving and valley filling, energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0036] Figure 1 This is a block diagram of a charging service system for a charging station according to the present invention;

[0037] Figure 2 This is a block diagram of the charging module of the present invention;

[0038] Figure 3 This is a schematic diagram of the first case of the orderly limiting strategy from near to far of the present invention;

[0039] Figure 4 This is an illustration of the second case of the invention's ordered limitation strategy from near to far Figure 1 ;

[0040] Figure 5 This is an illustration of the second case of the invention's ordered limitation strategy from near to far Figure 2 . DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0042] The present invention will be further described below with reference to the embodiments.

[0043] Example 1: Please refer to Figure 1-Figure 2 , a charging service system for a charging station, comprising a control center;

[0044] The control center is connected with a calculation module, a data acquisition module, an input module, multiple charging modules and a grid-connected inverter;

[0045] The data acquisition module is connected to the photovoltaic energy storage module and the power grid;

[0046] The photovoltaic energy storage module, the data acquisition module and the power grid are all connected to the grid-connected inverter, and multiple charging modules are connected to the data acquisition module and the grid-connected inverter;

[0047] The charging module is used for charging, parking indication, and whether the car is allowed to park;

[0048] The calculation module is used to calculate the energy storage status of the photovoltaic energy storage module, and provide a control strategy for the grid-connected inverter to control the power grid based on the energy storage status, while formulating an orderly limitation strategy from near to far;

[0049] The data acquisition module is used to collect data from photovoltaic energy storage modules, grid-connected inverters, power grids, and multiple charging modules;

[0050] The control center gives the charging module in the uncharged state an instruction to execute the orderly limiting strategy from near to far, and gives the charging module an instruction to execute the orderly charging strategy when the input module agrees with the orderly charging strategy.

[0051] The control center implements an orderly limitation strategy from near to far for the charging modules in the uncharged state. The charging modules are orderly limited from near to far from the grid-connected inverter to avoid random charging, which can reduce line losses. At the same time, the charging modules implement different orderly charging strategies. More charging modules can be added while the rated power of the charging station remains unchanged, which increases the capacity of the charging station and is beneficial for actual use. In addition, photovoltaic energy storage modules are used in the charging station, and the access and deployment of photovoltaic energy storage modules and the power grid maximizes the use of photovoltaic green energy. When the electricity price is high, the photovoltaic energy storage modules are used to supply power, effectively reducing the electricity cost of the charging station, while playing the role of peak shaving and valley filling, energy conservation and emission reduction.

[0052] The control center is also connected to an output module for issuing charging information and orderly charging strategies.

[0053] The control center is connected to a storage module for data storage.

[0054] The strategy of limiting in an orderly manner from near to far is that when there is a charging demand, the charging module closest to the grid-connected inverter and in an uncharged state enters the charging state.

[0055] The specific operations of the near-to-far ordered limitation strategy are as follows:

[0056] Step 1: Determine the nth charging module that is currently farthest from the grid-connected inverter and is handling the charging status;

[0057] Step 2: Determine whether there is an uncharged charging module between the nth charging module and the grid-connected inverter. If so, select the uncharged charging module closest to the grid-connected inverter to perform the charging operation; if not, proceed to step 3;

[0058] The third step is to determine whether there is any uncharged charging module between the charging module at position n and the charging module farthest from the grid-connected inverter. If so, the charging module closest to the charging module at position n and in the uncharged state is selected for charging. If not, it means that all charging modules in the charging station are in the charging state.

[0059] Specific examples:

[0060] Case 1:

[0061] The No. 1 and No. 2 charging modules are in the charging state. It is determined whether the No. 3 charging module starting from the grid-connected inverter is in the uncharged state. When the No. 3 charging module is in the uncharged state, the No. 3 charging module closer to the grid-connected inverter is opened for charging (e.g. Figure 3 );

[0062] When the No. 1 and No. 2 charging modules are in the charging state, if the No. 3 charging module is not charged and the No. 4 charging module is charged, it means that the cable between the No. 4 charging module and the No. 3 charging module is in a redundant consumption state. Alternatively, if the No. 3 and No. 4 charging modules are not charged and the No. 5 charging module is charged, it means that the cables between the No. 4 charging module and the No. 3 charging module, and between the No. 4 charging module and the No. 5 charging module are in a redundant consumption state. While the No. 3 charging module is charging and the No. 4 and No. 5 charging modules are not charged, the charging current passes through the No. 1 charging module, the No. 2 charging module, and the No. 3 charging module, and does not pass through the cables between the No. 4 charging module and the No. 3 charging module, and between the No. 4 charging module and the No. 5 charging module. The cables between the No. 4 charging module and the No. 3 charging module, and between the No. 4 charging module and the No. 5 charging module will not generate additional energy consumption. The charging modules are orderly restricted from near to far from the grid-connected inverter to avoid random charging, which can reduce line loss.

[0063] Case 2:

[0064] When the charging module at position 3 is in the charging state, it first determines whether the charging modules at positions 1 and 2 are charging;

[0065] When it is determined that the No. 1 charging module is in an uncharged state, the No. 1 charging module is open for charging (such as Figure 5 );

[0066] When it is determined that the charging module at position 1 is in charging state and the charging module at position 2 is in uncharging state, the charging module at position 2 is open for charging (e.g. Figure 5 );

[0067] When it is determined that the No. 1 charging module and the No. 2 charging module are both charging, it is determined whether the No. 4 charging module is in the charging state. If the No. 4 charging module is not in the charging state, the No. 4 charging module is open for charging. If the No. 4 charging module is in the charging state, it is determined whether the No. 5 charging module is in the charging state (such as Figure 4 ).

[0068] The charging module includes a charging pile module, a vehicle identification module, a parking execution module, a wake-up module, a sleep module and a parking indication module;

[0069] The charging pile module is used to charge the car when it is parked standard;

[0070] The vehicle identification module is used to identify whether the vehicle is parked in a standard manner;

[0071] The parking execution module is turned off when the charging pile module allows charging, or is turned on when the charging pile module does not allow charging;

[0072] The wake-up module is used to wake up the charging pile module in dormant state;

[0073] The dormant module is used to put the charging pile module in dormancy when it is in the charging state;

[0074] The parking indication module is used to indicate to the charging pile module whether charging is allowed or not.

[0075] The parking execution module is an electronic ground lock.

[0076] There are two types of orderly charging strategies: the first is that the charging module charges at maximum power, the electricity price remains unchanged, parking is free during charging, and parking fees incurred if the parking time exceeds the charging time are charged at the original price;

[0077] The second type is that the charging module charges at 80% of the maximum power, the electricity price is 80% of the original price, parking is free during charging, and the parking fee generated if the parking time exceeds the charging time is charged at the original price.

[0078] For example, at a charging station in a shopping mall, if a user wants to go shopping in the mall, the user can adopt the second orderly charging strategy. Due to the low electricity price and extended free parking time, the user can save money and at the same time reduce the power usage of the charging station.

[0079] For example: the rated power of the charging station is 12000KW, and the rated power of the charging module is 150KW;

[0080] If all charging modules are used according to the rated power of the charging modules, only 80 groups of charging modules can be set;

[0081] If 60 charging modules are used according to the rated power of the charging modules, the power consumption is 9000KW. According to the charging capacity of 120KW, 25 charging modules can be set, for a total of 85 groups.

[0082] If 40 sets of charging modules are used according to the rated power of the charging modules, the power consumption is 6000KW. According to the charging of 120KW, 50 sets of charging modules can be set, totaling 90 sets;

[0083] The charging modules implement different orderly charging strategies. More charging modules can be added while the rated power of the charging station remains unchanged, which increases the capacity of the charging station and facilitates practical use.

[0084] A method for using a charging service system at a charging station, specifically operating as follows:

[0085] Step 1: Determine the charging module that is open for charging through a near-to-far order restriction strategy, and the parking instruction module of the charging module instructs the charging pile module to allow charging;

[0086] Step 2: The control center controls the wake-up module to wake up the charging module. The vehicle identification module identifies whether the vehicle is parked correctly. The charging pile module gives a voice prompt. After the vehicle is parked correctly, the charging module enters the charging state.

[0087] Step 3: The user inputs the type of vehicle to be charged through the input module. The control center selects an orderly charging strategy based on the vehicle type and transmits the orderly charging strategy to the output module. The user confirms the orderly charging strategy.

[0088] Step 4: According to the orderly charging strategy, the control center controls the grid-connected inverter to transmit the power of the grid to the charging pile module when the electricity price is low, and then charges the car. When the electricity price is high, the data acquisition module collects the energy storage power data P1 in the photovoltaic energy storage module and determines whether the energy storage power data P1 is less than 20% of the rated power Prated of the photovoltaic energy storage module. If it is, the control center controls the grid-connected inverter to transmit the power of the photovoltaic energy storage module to the charging pile module. The grid-connected inverter also adds the power P2 of the grid to the total charging power P3=P1+P2, and the charging pile module charges the car. If it is not, the control center controls the grid-connected inverter to transmit the power of the grid to the charging pile module, and then charges the car.

[0089] When the energy storage power data P1 is less than 20% of the rated power Prated of the photovoltaic energy storage module, the grid-connected inverter transmits grid power to the photovoltaic energy storage module when the electricity price is low, until the energy storage power data P1 is equal to the rated power Prated of the photovoltaic energy storage module.

[0090] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A charging service system for a charging station, comprising a control center, characterized in that: The control center is connected with a calculation module, a data acquisition module, an input module, multiple charging modules and a grid-connected inverter; The data acquisition module is connected to the photovoltaic energy storage module and the power grid; The photovoltaic energy storage module, the data acquisition module and the power grid are all connected to the grid-connected inverter, and multiple charging modules are connected to the data acquisition module and the grid-connected inverter; The charging module is used for charging, parking indication, and whether the car is allowed to park; The calculation module is used to calculate the energy storage status of the photovoltaic energy storage module, and provide a control strategy for the grid-connected inverter to control the power grid based on the energy storage status, while formulating an orderly limitation strategy from near to far; The data acquisition module is used to collect data from photovoltaic energy storage modules, grid-connected inverters, power grids, and multiple charging modules; The control center gives the charging module in the uncharged state an instruction to execute the orderly limiting strategy from near to far. When the input module agrees with the orderly charging strategy, it gives the charging module an instruction to execute the orderly charging strategy. The strategy of limiting in an orderly manner from near to far is that when there is a charging demand, the charging module closest to the grid-connected inverter and in an uncharged state enters the charging state.

2. The charging service system for a charging station according to claim 1, characterized in that: The control center is also connected to an output module for issuing charging information and orderly charging strategies.

3. The charging service system for a charging station according to claim 1, characterized in that: The control center is connected to a storage module for data storage.

4. The charging service system for a charging station according to claim 3, characterized in that: The charging module includes a charging pile module, a vehicle identification module, a parking execution module and a parking indication module; The charging pile module is used to charge the car when it is parked standard; The vehicle identification module is used to identify whether the vehicle is parked in a standard manner; The parking execution module is turned off when the charging pile module allows charging, or is turned on when the charging pile module does not allow charging; The parking indication module is used to indicate to the charging pile module whether charging is allowed or not.

5. The charging service system for a charging station according to claim 4, characterized in that: The charging module also includes a wake-up module and a sleep module; The wake-up module is used to wake up the charging pile module in dormant state; The sleep module is used to put the charging pile module in sleep mode when it is in charging state.

6. The charging service system for a charging station according to claim 5, characterized in that: There are two types of orderly charging strategies: the first is that the charging module charges at maximum power, the electricity price remains unchanged, parking is free during charging, and parking fees incurred if the parking time exceeds the charging time are charged at the original price; The second type is that the charging module charges at 80% of the maximum power, the electricity price is 80% of the original price, parking is free during charging, and the parking fee generated if the parking time exceeds the charging time is charged at the original price.

7. A method for using the charging service system of a charging station according to claim 6, characterized in that: The specific operations are as follows: Step 1: Determine the charging module that is open for charging through a near-to-far order restriction strategy, and the parking instruction module of the charging module instructs the charging pile module to allow charging; Step 2: The control center controls the wake-up module to wake up the charging module. The vehicle identification module identifies whether the vehicle is parked correctly. The charging pile module gives a voice prompt. After the vehicle is parked correctly, the charging module enters the charging state. Step 3: The user inputs the type of vehicle to be charged through the input module. The control center selects an orderly charging strategy based on the vehicle type and transmits the orderly charging strategy to the output module. The user confirms the orderly charging strategy. Step 4: According to the orderly charging strategy, the control center controls the grid-connected inverter to transmit the power of the grid to the charging pile module when the electricity price is low, and then charges the car. When the electricity price is high, the data acquisition module collects the energy storage power data P1 in the photovoltaic energy storage module and determines whether the energy storage power data P1 is less than 20% of the rated power Prated of the photovoltaic energy storage module. If it is, the control center controls the grid-connected inverter to transmit the power of the photovoltaic energy storage module to the charging pile module. The grid-connected inverter also adds the power P2 of the grid to the total charging power P3=P1+P2, and the charging pile module charges the car. If it is not, the control center controls the grid-connected inverter to transmit the power of the grid to the charging pile module, and then charges the car.

8. The method of use according to claim 7, characterized in that: When the energy storage power data P1 is less than 20% of the rated power Prated of the photovoltaic energy storage module, the grid-connected inverter transmits grid power to the photovoltaic energy storage module when the electricity price is low, until the energy storage power data P1 is equal to the rated power Prated of the photovoltaic energy storage module.

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