CN115733212A - Control method of charging system and charging system - Google Patents
Control method of charging system and charging system Download PDFInfo
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- CN115733212A CN115733212A CN202211441583.2A CN202211441583A CN115733212A CN 115733212 A CN115733212 A CN 115733212A CN 202211441583 A CN202211441583 A CN 202211441583A CN 115733212 A CN115733212 A CN 115733212A
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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Abstract
The invention discloses a control method of a charging system and the charging system, the method comprises: when the total output power of the charging system is greater than the rated output power of the charging system, in order to reduce the impact of the charging equipment on the power grid, the charge state of the charging equipment corresponding to each charging unit is obtained, the target output power of each charging unit is determined according to the charge state of the charging equipment and the rated output power of the charging system, and then the output power of the charging unit with the current output power greater than the target output power is controlled to be reduced to the target output power, so that the total output power of the charging system is reduced, the impact of the charging equipment on the power grid due to the fact that the total output power is too large is avoided, and the stability of the power grid is improved.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a control method of a charging system and the charging system.
Background
In the charging process of the electric automobile, because large charging power is needed, the electric automobile needs to be charged through a special charging pile. The maximum power of the charging station is affected by the capacity of the box-type substation to which the charging station is connected. When the charging power of the charging station is too large, voltage impact can be caused to the accessed power grid, and then the stability of the accessed power grid is reduced.
Disclosure of Invention
The embodiment of the application provides a control method of a charging system and the charging system, and aims to solve the problem that when the charging power requirement of a charging station is overlarge, the stability of a power grid is reduced.
The embodiment of the application provides a control method of a charging system, which comprises the following steps:
when the total output power of the charging system is greater than the rated output power of the charging system, acquiring the charge state of the charging equipment corresponding to each charging unit;
determining target output power of each charging unit according to the state of charge and rated output power of the charging system;
and controlling the charging unit with the current output power larger than the target output power, and reducing the output power to the target output power.
Optionally, the step of determining the target output power of each charging unit according to the state of charge and the rated output power of the charging system includes:
determining the rated charging power of each charging unit according to the rated output power of the charging system;
determining an electric quantity interval corresponding to the charge state of each charging device;
and determining the target output power of the charging unit positioned in the electric quantity interval according to the rated charging power of the charging unit.
Optionally, the step of determining the rated charging power of each charging unit according to the rated output power of the charging system includes:
acquiring the total number of charging units in the charging system;
and determining the rated charging power of each charging unit according to the total number of the charging units and the rated output power of the charging system.
Optionally, the electric quantity interval includes a first electric quantity interval and a second electric quantity interval; the step of determining the target output power of the charging unit located in the electric quantity interval according to the rated charging power of the charging unit comprises the following steps:
when the electric quantity interval is a first electric quantity interval, determining the rated charging power of the charging unit as the target output power of the charging unit positioned in the first electric quantity interval;
or when the electric quantity interval is a second electric quantity interval, determining the target output power of the charging unit in the second electric quantity interval according to the rated charging power and the preset proportion of the charging unit;
wherein the first electric quantity interval is smaller than the second electric quantity interval.
Optionally, when the second electric quantity interval includes a first sub-interval and a second sub-interval, the preset ratio includes a first preset ratio and a second preset ratio, and when the electric quantity interval is the second electric quantity interval, the step of determining the target output power of the charging unit located in the second electric quantity interval according to the rated charging power and the preset ratio of the charging unit includes:
when the electric quantity interval is the first sub-interval, determining the target output power of the charging unit positioned in the first sub-interval according to the rated charging power of the charging unit and the first preset proportion;
or when the electric quantity interval is the second subinterval, determining the target output power of the charging unit positioned in the second subinterval according to the rated charging power of the charging unit and the second preset proportion;
the first subinterval is smaller than the second subinterval, and the first preset proportion is larger than the second preset proportion.
Optionally, the step of determining the target output power of the charging unit located in the electric quantity section according to the rated charging power of the charging unit includes:
determining the number of charging units in the electric quantity interval;
when the number of the charging units is smaller than the total number of the charging units, determining the rated charging power of the charging units as the target charging power of the charging units positioned in the electric quantity interval;
and when the number of the charging units is equal to the total number of the charging units, determining the target output power of each charging unit in the electric quantity interval according to the electric quantity interval, the number of the charging units and the rated output power of the charging system.
Optionally, the step of determining the target output power of each charging unit located in the electric quantity section according to the electric quantity section, the number of charging units and the rated charging power of the charging unit includes:
determining average charging power according to the number of the charging units in the electric quantity interval and the rated output power of the charging system;
and determining the average charging power as the target output power of each charging unit in the electric quantity interval, wherein the electric quantity interval is a first electric quantity interval.
Optionally, the step of determining the target output power of each charging unit located in the electric quantity section according to the electric quantity section, the number of charging units and the rated output power of the charging system includes:
determining average charging power according to the number of the charging units in the electric quantity interval and the rated output power of the charging system;
and determining the target output power of each charging unit positioned in the electric quantity interval according to the average charging power and the preset proportion corresponding to the electric quantity interval, wherein the electric quantity interval is a second electric quantity interval.
Optionally, the method further comprises:
when the total output power of the charging system is smaller than or equal to the rated output power of the charging system, acquiring the total number of charging units;
determining target output power of each charging unit according to the total number of the charging units and rated output power of the charging system;
and controlling the charging unit to charge the connected charging equipment according to the target output power.
Optionally, the step of determining the target output power of each charging unit according to the total number of the charging units and the rated output power of the charging system includes:
determining an average output power according to a ratio of a rated output power of the charging system to the total number of the charging units;
determining the average output power as a target output power of each of the charging units.
In addition, to achieve the above object, the present invention also provides a control system of a charging system, including:
at least one charging device;
the charging unit is used for providing electric quantity for the charging equipment;
and a control device of the charging system connected to the charging unit.
Optionally, the control device comprises: the charging system control method comprises a memory, a processor and a control program of the charging system, wherein the control program of the charging system is stored on the memory and can run on the processor, and the control program of the charging system realizes the steps of the control method of the charging system when being executed by the processor.
The embodiment of the application provides a control method of a charging system and a technical scheme of the charging system, when the total output power of the charging system is greater than the rated output power of the charging system, in order to reduce the impact of the charging equipment on a power grid, the charge state of the charging equipment corresponding to each charging unit is obtained, the target output power of each charging unit is determined according to the charge state of the charging equipment and the rated output power of the charging system, and then the output power of the charging unit with the current output power greater than the target output power is controlled to be reduced to the target output power, so that the total output power of the charging system is reduced, the impact of the charging equipment on the power grid due to the fact that the total output power is too large is avoided, and the stability of the power grid is improved.
Drawings
Fig. 1 is a schematic flowchart of a control method of a charging system according to a first embodiment of the present invention;
fig. 2 is a flowchart illustrating a control method of a charging system according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a control device according to an embodiment of the present invention.
The objects, features, and advantages of the present application will be further understood by reference to the following description, taken in conjunction with the accompanying drawings, which are a single embodiment and are not intended to be all-inclusive.
Detailed Description
In the charging process of the electric automobile, because large charging power is needed, the electric automobile needs to be charged through a special charging pile. The maximum power of the charging station is affected by the capacity of the box-type substation to which the charging station is connected. When the charging power of the charging station is too large, voltage impact can be caused to the accessed power grid, and then the stability of the accessed power grid is reduced. Especially, when a plurality of electric vehicles work simultaneously, the charging power requirement of the charging station is large, large voltage impact is caused to an accessed power grid, and the stability of the power grid is reduced.
Therefore, the present application proposes a control method of a charging system. When the total output power of the charging system is greater than the rated output power of the charging system, in order to reduce the impact of the charging equipment on the power grid, the charge state of the charging equipment corresponding to each charging unit is obtained, the target output power of each charging unit is determined according to the charge state of the charging equipment and the rated output power of the charging system, and then the output power of the charging unit with the current output power greater than the target output power is controlled to be reduced to the target output power, so that the total output power of the charging system is reduced, the impact of the charging equipment on the power grid due to the fact that the total output power is too large is avoided, and the stability of the power grid is improved.
In addition, when the total output power of the charging system is larger than the rated output power of the charging system, the target output power corresponding to each charging unit is determined according to the electric quantity interval corresponding to the charge state of each charging device, and then the charging units are controlled to charge according to the target output power determined by the corresponding electric quantity interval. Therefore, the charging equipment in different charge states is charged normally, secondarily, slightly and continuously. The construction cost of reduction charging station has reduced the impact of battery charging outfit to the electric wire netting simultaneously.
In order to better understand the above technical solution, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
As shown in fig. 1, in a first embodiment of the present application, a control method of a charging system of the present application includes the steps of:
step S110, when the total output power of the charging system is greater than the rated output power of the charging system, acquiring the state of charge of the charging device corresponding to each charging unit.
In this embodiment, the charging unit may be a charging pile. The charging device may be an electric vehicle.
Optionally, the total output power of the charging system is equal to the sum of the charging powers of the charging devices currently connected to the charging unit and in the charging state; and also equals to the sum of the output powers of the individual charging units. Assuming that three charging units exist currently, each charging unit is connected with one charging device, and each charging device is in a charging state, the charging powers of the three charging devices can be acquired respectively, and the charging powers of the three charging devices are added to obtain the total output power of the charging system. The output powers of the three charging units may be obtained, and the output powers of the three charging units may be added to obtain the total output power of the charging system.
Optionally, the rated output power of the charging system is determined according to the box-to-substation capacity.
In this embodiment, when the total output power of the charging system is greater than the rated output power of the charging system, that is, when a large number of charging piles are simultaneously used at full power, in this case, a large impact may be caused to the power grid. In order to reduce the impact hazard of the power grid, the local controller classifies charging of the charging equipment in different charge states, reduces the impact of full-power charging of a plurality of charging equipment on the power grid, and is favorable for the stability of the power grid.
In this embodiment, when the total output power of the charging system is greater than the rated output power, the state of charge of the charging device corresponding to each charging unit is obtained. Wherein, the state of charge is the remaining capacity of the charging device.
Optionally, the charging unit may acquire the state of charge of the charging device connected thereto, and then send the acquired state of charge of the charging device to the control device of the charging system, so that the control device of the charging system can acquire the state of charge of the charging device corresponding to each charging unit. Optionally, in addition to obtaining the state of charge of the charging device, device information related to the charging device may also be obtained, including but not limited to a unique identifier, a serial number, and a charging device location of each charging device. The device information is associated with the state of charge of the charging device and then transmitted to the control device of the charging system.
Optionally, the control device of the charging system may further have a display screen, and the device information and the state of charge of each charging device may be displayed on the display screen. The control device of the charging system can monitor the equipment information and the charge state of each charging device in real time.
And step S120, determining the target output power of each charging unit according to the state of charge and the rated output power of the charging system.
In this embodiment, when the state of charge of the charging device connected to each charging unit is obtained, the target output power of each charging unit may be determined according to the state of charge of each charging device and the rated output power of the charging system.
Optionally, the local controller of the present application may determine target output powers corresponding to charging devices of different states of charge, and then perform classified charging on each charging device, reduce impact of full-power charging of a plurality of charging devices on a power grid, and facilitate stability of the power grid. In this case, the charging manner of the charging unit may be sub-power charging, small-power charging, trickle charging, or the like, which may be determined according to the state of charge and the rated output power of the charging device.
Optionally, determining the target output power of each charging unit according to the state of charge and the rated output power of the charging system may include the following steps:
and step S121, determining the rated charging power of each charging unit according to the rated output power of the charging system.
Alternatively, the total number of the charging units in the charging station may be obtained, and the rated output power of each charging unit may be determined according to the rated output power of the charging system and the total number of the charging units. Assuming that the total number of the charging units in the current charging station is 10, the rated output power of the charging system is 10KW, and then the rated charging power of each charging unit is 1KW.
And step S122, determining an electric quantity interval corresponding to the charge state of each charging device.
Step S123, determining a target output power of the charging unit located in the electric quantity interval according to the rated charging power of the charging unit.
In this embodiment, a plurality of electric quantity intervals may be preset, and the electric quantity interval corresponding to the state of charge of each charging device may be determined. And then determining the target output power of the charging unit positioned in the electric quantity interval according to the rated charging power of the charging unit.
Optionally, the power interval includes a first power interval and a second power interval. The first electric quantity interval and the second electric quantity interval can be set according to actual conditions. And the first electric quantity interval is larger than the second electric quantity interval.
Alternatively, when the power interval is the first power interval, the rated charging power of the charging unit may be determined as the target output power of the charging unit located in the first power interval. Assuming that there are 10 charging devices to be charged in the charging station, the rated charging power of each charging unit is 1KW. Among the 10 charging devices, the charging device with the state of charge in the first electric quantity interval is charged by using the rated charging power of the charging unit, that is, the target output power of the charging unit in the first electric quantity interval is determined to be 1KW.
Assume that the first power interval is set to have an SOC of 20% or less. Then, when the SOC of the charging equipment is less than or equal to 20%, the local controller carries out full-power charging on the charging equipment in the first electric quantity interval.
Optionally, when the electric quantity interval is the second electric quantity interval, the target output power of the charging unit located in the second electric quantity interval may be determined according to the rated charging power of the charging unit and the preset ratio. Assuming that there are 10 charging devices to be charged in the charging station, the rated charging power of each charging unit is 1KW. The charging device with the state of charge in the second electric quantity interval in the 10 charging devices may be charged by using the rated charging power of the charging unit and the target output power determined by the preset ratio.
It is assumed that the second power interval is set to 20 < SOC ≦ 100. Then, when the state of charge of the charging equipment is more than 20 and the SOC is less than or equal to 100, the local controller charges the charging equipment according to the preset proportion of the rated charging power.
Optionally, in order to improve accuracy of the target output power of the charging unit, stability of the power grid is improved. The second electric quantity interval can be subdivided into a plurality of small intervals according to actual conditions, and therefore the target output power of each charging unit can be accurately determined.
Optionally, the second electric quantity interval may be divided into a first sub-interval and a second sub-interval, and a corresponding preset proportion is set for each sub-interval according to an actual situation. Alternatively, a first preset proportion may be set for the first sub-interval, and a second preset proportion may be set for the second sub-interval. The first subinterval is smaller than the second subinterval, and the first preset proportion is larger than the second preset proportion.
Optionally, when the state of charge of the charging device is the first sub-interval, the target output power of the charging unit located in the first sub-interval may be determined according to the rated charging power of the charging unit and the first preset proportion.
Assuming that the first subinterval is set to 20% < SOC ≦ 50%, the first preset proportion is set to 0.8. Then, when the state of charge of the charging device is 20% < SOC ≦ 50%, the target output power of the local controller is determined to be 0.8 × 1kw=800w.
Optionally, when the state of charge of the charging device is in the second sub-interval, the target output power of the charging unit located in the second sub-interval may be determined according to the rated charging power of the charging unit and a second preset proportion.
Assuming that the second subinterval is set to 50% < SOC ≦ 80%, the second preset ratio is set to 0.5. Then, when the state of charge of the charging device is 50% < SOC ≦ 80%, the target output power of the local controller is determined to be 0.5 × 1kw=500w.
Optionally, the second electric quantity interval of the present application is not limited to be divided into the first sub-interval and the second sub-interval, and the second electric quantity interval may be divided into a plurality of sub-intervals according to the actual situation, and the preset proportion of each sub-interval is determined according to the actual situation, so that the charging devices in different states of charge all have corresponding charging modes for charging.
According to the embodiment, the charging system is divided into the electric quantity intervals, when the total output power of the charging system is larger than the rated output power of the charging system, the electric quantity interval where the charge state of each charging device is located is obtained, and then the target charging power of each charging device is determined, so that the charging device is charged in a stepped mode, the impact on a power grid when each charging device is charged at full power at the same time is avoided, and the stability of the power grid is improved.
In one embodiment, determining the target output power of each of the charging units based on the state of charge and the rated output power of the charging system may include:
in step S221, the number of charging units in the electric quantity interval is determined.
Step S222, when the number of the charging units is smaller than the total number of the charging units, determining the rated charging power of the charging units as the target charging power of the charging units in the electric quantity interval;
step S223, when the number of the charging units is equal to the total number of the charging units, determining the target output power of each charging unit located in the electric quantity interval according to the electric quantity interval, the number of the charging units, and the rated output power of the charging system.
In the present embodiment, it is assumed that there are 10 charging units in the charging station, and each charging unit is in a charging state.
And determining the rated charging power of the charging unit as the target charging power of the charging unit in the electric quantity section, assuming that the number of the charging units in the same electric quantity section is less than the total number of the charging units. That is, in this case, the target charging power of each charging unit located in the electricity amount section is 1KW.
If the number of the charging units located in the same electric quantity interval is equal to the total number of the charging units, it means that all the charging units are located in the same electric quantity interval and are charged according to the same target charging power. If the SOC of the electric quantity interval is less than or equal to 20%, the local controller may charge the charging device in the first electric quantity interval at full power, which may also cause grid instability. At this time, the target output power of each charging unit located in the first power interval may be determined according to the power interval, the number of charging units, and the rated output power of the charging system.
Alternatively, the average charging power may be determined according to the number of charging units located in the first power interval and the rated output power of the charging system. And determining the average charging power as the target output power of each charging unit in the first electric quantity interval. Assuming that the number of the charging units with the SOC less than or equal to 20% is 10, and the rated output power of the charging system is 10KW, the target output power of each charging unit with the SOC less than or equal to 20% is 1KW.
Alternatively, the average charging power may be determined according to the number of charging units located in the second electric quantity interval and the rated output power of the charging system; and determining the target output power of each charging unit in the electric quantity interval according to the average charging power and the preset proportion corresponding to the second electric quantity interval. Assuming that the number of the charging units with the SOC of more than 20% and less than or equal to 50% is 10, the rated output power of the charging system is 10KW, and the preset proportion of the second electric quantity interval is set to be 0.8. Then, when the state of charge of the charging device is 20% < SOC ≦ 50%, the target output power of the local controller is determined to be 0.8 × 1kw=800w, that is, the target output power of the charging unit located in the second power quantity interval is 800W.
Step S130, controlling the charging unit with the current output power greater than the target output power, and reducing the output power to the target output power.
In this embodiment, after the target output power of each charging unit is determined, if the current output power of the charging unit is greater than the target output power, the current output power may be reduced to the target output power, so that the charging device with a large residual capacity is trickle charged with a small power, the damage of the large current to the battery of the charging device is reduced, and the service life of the charging device is prolonged.
According to the technical scheme, when the total output power of the charging system is greater than the rated output power of the charging system, in order to reduce the impact of the charging device on the power grid, the charge state of the charging device corresponding to each charging unit is obtained, the target output power of each charging unit is determined according to the charge state of the charging device and the rated output power of the charging system, and then the output power of the charging unit with the current output power greater than the target output power is controlled to be reduced to the target output power, so that the total output power of the charging system is reduced, the impact of the charging device on the power grid due to the fact that the total output power is too large is avoided, and the stability of the power grid is improved.
As shown in fig. 2, in a second embodiment of the present application, a control method of a charging system of the present application includes the steps of:
step S310, when the total output power of the charging system is smaller than or equal to the rated output power of the charging system, the total number of the charging units connected with the charging equipment at present is obtained.
In this embodiment, when the total output power of the charging system is less than or equal to the rated output power of the charging system, that is, the impact on the power grid caused by the simultaneous charging of a plurality of charging devices is small, then the charging devices can be fully charged.
Step S320, determining a target output power of each charging unit according to the total number of the charging units and the rated output power of the charging system.
Alternatively, the average output power may be determined according to a ratio of the rated output power of the charging system to the total number of the charging units, and the average output power may be determined as the target output power of each charging unit. And then each charging unit is charged according to the target output power.
And step S330, controlling the charging unit to charge the connected charging equipment according to the target output power.
According to the technical scheme, the total output power of the charging system and the rated output power of the charging system are obtained; when the total output power of the charging system is smaller than or equal to the rated output power of the charging system, acquiring the total number of the charging units; determining the target output power of each charging unit according to the total number of the charging units and the rated output power of the charging system; the charging unit is controlled to charge the connected charging equipment according to the target output power, so that the full-power charging of each charging equipment is realized under the condition that the rated output power of the charging system is sufficient, and the charging efficiency is improved.
While a logical order is shown in the flow chart, in some cases, the steps shown or described may be performed in an order different than that shown or described herein.
The scheme of the embodiment of the invention also relates to a charging system. The charging system includes at least one charging device. The charging system comprises a charging unit for providing electric quantity for the charging equipment and a control device of the charging system connected with the charging unit.
Wherein, this charging unit is for filling electric pile. The charging equipment is an electric bicycle, an electric automobile or the like. Alternatively, one charging device may be connected to each charging unit. Each charging unit can also be simultaneously connected with a plurality of charging devices for charging the plurality of charging devices.
The control device is used for acquiring the charge state of the charging equipment corresponding to each charging unit when the total output power of the charging system is greater than the rated output power of the charging system; determining target output power of each charging unit according to the state of charge and rated output power of the charging system; and controlling the charging unit with the current output power larger than the target output power, and reducing the output power to the target output power.
The control device is also used for determining the rated charging power of each charging unit according to the rated output power of the charging system; determining an electric quantity interval corresponding to the charge state of each charging device; and determining the target output power of the charging unit positioned in the electric quantity interval according to the rated charging power of the charging unit.
The control device is also used for acquiring the total number of the charging units which are currently connected with the charging equipment; and determining the rated charging power of each charging unit according to the total number of the charging units and the rated output power of the charging system.
The control device is also used for determining the rated charging power of the charging unit as the target output power of the charging unit positioned in a first electric quantity interval when the electric quantity interval is the first electric quantity interval; or when the electric quantity interval is a second electric quantity interval, determining the target output power of the charging unit positioned in the second electric quantity interval according to the rated charging power and the preset proportion of the charging unit; wherein the first electric quantity interval is smaller than the second electric quantity interval.
The control device is further used for determining the target output power of the charging unit positioned in the first sub-interval according to the rated charging power of the charging unit and the first preset proportion when the electric quantity interval is the first sub-interval; or when the electric quantity interval is the second subinterval, determining the target output power of the charging unit positioned in the second subinterval according to the rated charging power of the charging unit and the second preset proportion; the first subinterval is smaller than the second subinterval, and the first preset proportion is larger than the second preset proportion.
The control device is also used for determining the number of the charging units in the electric quantity interval; when the number of the charging units is one, determining the rated charging power of the charging units as the target charging power of the charging units positioned in the electric quantity interval; and when the number of the charging units is multiple, determining the target output power of each charging unit in the electric quantity interval according to the electric quantity interval, the number of the charging units and the rated charging power of the charging units.
The control device is also used for determining the average charging power according to the number of the charging units in the electric quantity interval and the rated charging power of the charging units; and determining the average charging power as the target output power of each charging unit in the electric quantity interval, wherein the electric quantity interval is a first electric quantity interval.
The control device is also used for determining the average charging power according to the number of the charging units in the electric quantity interval and the rated charging power of the charging units; and determining the target output power of each charging unit positioned in the electric quantity interval according to the average charging power and the preset proportion corresponding to the electric quantity interval, wherein the electric quantity interval is a second electric quantity interval.
The control device is also used for acquiring the total output power of the charging system and the rated output power of the charging system; when the total output power of the charging system is smaller than or equal to the rated output power of the charging system, acquiring the total number of charging units connected with charging equipment currently; determining target output power of each charging unit according to the total number of the charging units and rated output power of the charging system; and controlling the charging unit to charge the connected charging equipment according to the target output power.
The control device is also used for determining the average output power according to the ratio of the rated output power of the charging system and the total number of the charging units; determining the average output power as a target output power of each of the charging units.
As shown in fig. 3, fig. 3 is a schematic structural diagram of a hardware operating environment of a control device of a charging system according to an embodiment of the present invention.
As shown in fig. 3, the control device of the charging system may include: a processor 1001, e.g. a CPU, a memory 1005, a user interface 1003, a network interface 1004, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
It will be appreciated by those skilled in the art that the control arrangement of the charging system shown in fig. 3 does not constitute a limitation of the control arrangement of the charging system, and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 3, a memory 1005, which is a kind of storage medium, may include therein an operating system, a network communication module, a user interface module, and a control program of the charging system. Among them, the operating system is a program that manages and controls hardware and software resources of the control device of the charging system, a control program of the charging system, and operations of other software or programs.
In the control device of the charging system shown in fig. 3, the user interface 1003 is mainly used for connecting a terminal and performing data communication with the terminal; the network interface 1004 is mainly used for the background server and performs data communication with the background server; the processor 1001 may be used to invoke a control program of the charging system stored in the memory 1005.
In this embodiment, the control device of the charging system includes: a memory 1005, a processor 1001, and a control program of a charging system stored on the memory and executable on the processor, wherein:
when the processor 1001 calls the control program of the charging system stored in the memory 1005, the following operations are performed:
when the total output power of the charging system is greater than the rated output power of the charging system, acquiring the charge state of the charging equipment corresponding to each charging unit;
determining target output power of each charging unit according to the state of charge and rated output power of the charging system;
and controlling the charging unit with the current output power larger than the target output power, and reducing the output power to the target output power.
When the processor 1001 calls the control program of the charging system stored in the memory 1005, the following operations are performed:
when the total output power of the charging system is smaller than or equal to the rated output power of the charging system, acquiring the total number of charging units;
determining the target output power of each charging unit according to the total number of the charging units and the rated output power of the charging system;
and controlling the charging unit to charge the connected charging equipment according to the target output power.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (12)
1. A control method of a charging system, characterized in that the method comprises:
when the total output power of the charging system is greater than the rated output power of the charging system, acquiring the charge state of the charging equipment corresponding to each charging unit;
determining target output power of each charging unit according to the state of charge and rated output power of the charging system;
and controlling the charging unit with the current output power larger than the target output power, and reducing the output power to the target output power.
2. The method of claim 1, wherein said step of determining a target output power for each of said charging units based on said state of charge and a rated output power of said charging system comprises:
determining the rated charging power of each charging unit according to the rated output power of the charging system;
determining an electric quantity interval corresponding to the charge state of each charging device;
and determining the target output power of the charging unit positioned in the electric quantity interval according to the rated charging power of the charging unit.
3. The method of claim 2, wherein the step of determining the rated charging power of each charging unit based on the rated output power of the charging system comprises:
acquiring the total number of charging units in the charging system;
and determining the rated charging power of each charging unit according to the total number of the charging units and the rated output power of the charging system.
4. The method of claim 2, wherein the power interval comprises a first power interval and a second power interval; the step of determining the target output power of the charging unit located in the electric quantity section according to the rated charging power of the charging unit comprises the following steps:
when the electric quantity interval is a first electric quantity interval, determining the rated charging power of the charging unit as the target output power of the charging unit positioned in the first electric quantity interval;
or when the electric quantity interval is a second electric quantity interval, determining the target output power of the charging unit in the second electric quantity interval according to the rated charging power and the preset proportion of the charging unit;
wherein the first electric quantity interval is smaller than the second electric quantity interval.
5. The method of claim 4, wherein the step of determining the target output power of the charging unit in the second power interval according to the rated charging power and the preset ratio of the charging unit when the second power interval includes a first sub-interval and a second sub-interval, and when the preset ratio includes a first preset ratio and a second preset ratio, and when the power interval is the second power interval, the step of determining the target output power of the charging unit in the second power interval according to the rated charging power and the preset ratio of the charging unit comprises:
when the electric quantity interval is the first sub-interval, determining the target output power of the charging unit positioned in the first sub-interval according to the rated charging power of the charging unit and the first preset proportion;
or when the electric quantity interval is the second subinterval, determining the target output power of the charging unit positioned in the second subinterval according to the rated charging power of the charging unit and the second preset proportion;
the first subinterval is smaller than the second subinterval, and the first preset proportion is larger than the second preset proportion.
6. The method of claim 2, wherein the step of determining the target output power of the charging unit located in the charge interval according to the rated charging power of the charging unit comprises:
determining the number of charging units in the electric quantity interval;
when the number of the charging units is smaller than the total number of the charging units, determining the rated charging power of the charging units as the target charging power of the charging units positioned in the electric quantity interval;
and when the number of the charging units is equal to the total number of the charging units, determining the target output power of each charging unit in the electric quantity interval according to the electric quantity interval, the number of the charging units and the rated output power of the charging system.
7. The method of claim 6, wherein the step of determining the target output power of each charging unit located in the charge interval according to the charge interval, the number of charging units and the rated charging power of the charging unit comprises:
determining average charging power according to the number of the charging units in the electric quantity interval and the rated output power of the charging system;
and determining the average charging power as the target output power of each charging unit in the electric quantity interval, wherein the electric quantity interval is a first electric quantity interval.
8. The method of claim 6, wherein the step of determining a target output power of each charging unit located in the charge interval according to the charge interval, the number of charging units and a rated output power of the charging system comprises:
determining average charging power according to the number of the charging units in the electric quantity interval and the rated output power of the charging system;
and determining the target output power of each charging unit positioned in the electric quantity interval according to the average charging power and the preset proportion corresponding to the electric quantity interval, wherein the electric quantity interval is a second electric quantity interval.
9. The method of claim 1, wherein the method further comprises:
when the total output power of the charging system is smaller than or equal to the rated output power of the charging system, acquiring the total number of charging units;
determining target output power of each charging unit according to the total number of the charging units and rated output power of the charging system;
and controlling the charging unit to charge the connected charging equipment according to the target output power.
10. The method of claim 9, wherein the step of determining a target output power for each of the charging units based on the total number of charging units and a rated output power of the charging system comprises:
determining an average output power according to a ratio of a rated output power of the charging system to the total number of the charging units;
determining the average output power as a target output power of each of the charging units.
11. An electrical charging system, comprising:
at least one charging device;
a charging unit for providing power to the charging device;
and a control device of the charging system connected to the charging unit.
12. The charging system according to claim 11, wherein the control means includes: memory, a processor and a control program of a charging system stored on the memory and executable on the processor, the control program of the charging system implementing the steps of the method of controlling a charging system according to any one of claims 1 to 10 when executed by the processor.
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| CN202211441583.2A CN115733212A (en) | 2022-11-17 | 2022-11-17 | Control method of charging system and charging system |
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