CN108462217B - Scheduling algorithm of power supply unit of charging pile and power supply system of charging pile - Google Patents
Scheduling algorithm of power supply unit of charging pile and power supply system of charging pile Download PDFInfo
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Abstract
The invention relates to a scheduling algorithm of a charging pile power supply unit and a charging pile power supply system, wherein the scheduling algorithm of the charging pile power supply unit comprises at least one power distribution module and a plurality of fixed power modules; and the power distribution module is suitable for configuring the number of the fixed power modules according to the charging output power requirement. The invention aims to reduce the number of contactors by reasonably scheduling the fixed power modules and realize the unchanged performance of power distribution of the charging pile, so that the reduction of a larger number of contactors can be realized without carrying out power distribution by taking a minimum unit as a unit so as to save cost and improve efficiency.
Description
Technical Field
The invention belongs to the field of new energy, and particularly relates to a charging pile power supply unit scheduling algorithm and a charging pile power supply system.
Background
With the rapid development of the electric automobile charging pile industry, millions of charging piles are installed in various places throughout the country. But because the solidification of electric pile power is filled at present, the electric pile that leads to existing can't satisfy the super large power demand of charging because of the battery technology breaks through and brings. A series of problems have been brought from this, for example fill electric pile repetitive construction, the module utilization ratio that charges is low, fills electric pile investment construction risk height.
At present, in order to solve such problems, a matrix type flexible charging stack scheme is proposed by a plurality of charging device companies to realize a distributable scheme of the output power of the charging gun. The specific implementation scheme is that the charging units are concentrated into one charging pile, and then the charging modules with corresponding number are mounted to the charging output ends for output according to the requirements of the output ends.
As shown in fig. 1, the dc charging cabinet has 10 rectifier module slots and 5 power distribution module slots, 10 rectifier modules are respectively connected to the 5 power distribution modules, each power distribution module corresponds to one gun, and at most, one charging cabinet drags five charging guns. The power distribution module can intelligently select the number of the connected rectifying modules, and the single-gun power can be intelligently distributed within the range of 15kW-150 kW.
One obvious disadvantage of the above technology is that each minimum charging module needs to be connected with the charging output end through a contactor to control the mounting and the disconnection of the minimum charging module. The number of contactors will grow exponentially with the number of charging units.
Disclosure of Invention
The invention aims to provide a scheduling algorithm of a charging pile power supply unit and a charging pile power supply system.
In order to solve the above technical problem, the present invention provides a scheduling algorithm for a power supply unit of a charging pile, including:
at least one power distribution module and a plurality of fixed power modules; and
the power distribution module is suitable for configuring the number of the fixed power modules according to the charging output power requirement.
Furthermore, the output power of each fixed power module is in a certain multiple; namely, it is
And setting the output power of one fixed power module as the minimum unit power, wherein the output power of the other fixed power modules is in corresponding multiple with the minimum unit power.
Further, the method for configuring the number of the fixed power modules by the power distribution module according to the charging output power requirement includes:
the power distribution module is suitable for numbering and stacking all the fixed power modules;
if the charging output power is equal to the algebraic sum of the output powers of the corresponding fixed power modules, that is
The following steps are carried out:
step S11, the power distribution module is suitable for selecting the fixed power module which is smaller than and has the nearest output power of the charging output end according to the serial number of each fixed power module;
step S12, calculating the power difference value of the total power output by the charging output end and the current fixed power module, and selecting the fixed power module smaller than and closest to the power difference value again;
and step S13, repeating the step S12 until the total output power of each fixed power module is matched with the charging output power.
Further, the method for configuring the number of the fixed power modules by the power distribution module according to the charging output power requirement further includes:
if the charging output power is less than the algebraic sum of the output powers of the corresponding fixed power modules, that is
The following steps are carried out:
step S21, the power distribution module is suitable for selecting the fixed power module which is smaller than and has the nearest output power of the charging output end according to the serial number of each fixed power module;
step S22, calculating the power difference value of the total power output by the charging output end and the current fixed power module, and selecting the fixed power module smaller than and closest to the power difference value again;
and step S23, repeating step S22 until the remaining fixed power modules can not be matched with the current power difference value, and selecting the fixed power module which is larger than and closest to the power difference value.
Further, the power distribution module and each fixed power module are suitable for communication through the CAN module so as to select and control each fixed power module.
In another aspect, the invention also provides a charging pile power supply system.
Fill electric pile power supply system includes: at least one power distribution module and a plurality of fixed power modules; and the power distribution module is suitable for configuring the number of the fixed power modules according to the charging output power requirement.
Furthermore, the output power of each fixed power module is in a certain multiple; namely, it is
The output power of one fixed power module is set as the minimum unit power, and the output power of the other fixed power modules is a multiple of the minimum unit power.
Furthermore, the output power of each fixed power module is in a certain multiple; namely, it is
The output power of one fixed power module is set as the minimum unit power, and the output power of the other fixed power modules is a multiple of the minimum unit power.
Further, the power distribution module and each fixed power module are suitable for communication through the CAN module so as to select and control each fixed power module.
Further, the method for configuring the number of the fixed power modules by the power distribution module according to the power requirement of the charging output end further includes:
if the charging output power is less than the algebraic sum of the output powers of the corresponding fixed power modules, that is
The power distribution module is suitable for selecting the fixed power module which is smaller than and has the nearest output power of the charging output end according to the serial number of each fixed power module;
calculating a power difference value of the total power output by the charging output end and the current fixed power module, selecting the fixed power module smaller than and closest to the power difference value again, and repeating the step until the remaining fixed power modules cannot be matched with the power difference value, and selecting the fixed power module larger than and closest to the power difference value; and
if the charging output power is less than the algebraic sum of the output powers of the corresponding fixed power modules, that is
The power distribution module is suitable for selecting the fixed power module which is smaller than and has the nearest output power of the charging output end according to the serial number of each fixed power module;
and calculating a power difference value of the total power output by the charging output end and the current fixed power module, selecting the fixed power module smaller than and closest to the power difference value again, and repeating the step until the remaining fixed power modules cannot be matched with the current power difference value, and selecting the fixed power module larger than and closest to the power difference value.
The invention has the beneficial effects that the fixed power modules are reasonably scheduled to reduce the number of contactors and realize the unchanged performance of power distribution of the charging pile. The invention carries out quota matching on the fixed power modules according to the requirements, for example, a plurality of fixed power modules which are multiples of the minimum unit power are configured, but the minimum unit is not used as the module. Assuming that the output power of the minimum fixed power module is 15kW, a certain number of fixed power modules of 30kW, 45kW, or more power may be configured. The power distribution module is suitable for numbering and stacking all the fixed power modules, and when power is output, the fixed power module closest to the requirement is mounted and output according to the requirement of an output end, and then the small module is matched to finally realize the output of rated power. Thus, power distribution is not required to be performed by taking the minimum unit as a unit, so that the reduction of a larger number of contactors can be realized, the cost is saved, and the efficiency is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a prior art matrix flexible charge stack scheme;
FIG. 2 is a functional block diagram of the charging post power supply system of the present invention;
FIG. 3 is a flowchart of the steps of a first embodiment of configuring the number of fixed power modules based on charging output power requirements;
FIG. 4 is a flowchart of the steps of a second embodiment of configuring the number of fixed power modules based on charging output power requirements.
In the figure: a charging gun 1.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Example 1
FIG. 2 is a functional block diagram of the charging post power supply system of the present invention; referring to fig. 2, this embodiment 1 provides a scheduling algorithm for a power supply unit of a charging pile, which may be implemented by a charging pile power supply system, specifically, the charging pile power supply system includes: at least one power distribution module and a plurality of fixed power modules; and the power distribution module is suitable for configuring the number of the fixed power modules according to the charging output power requirement.
The output power of each fixed power module is in a certain multiple; that is, the output power of one fixed power module is set to be the minimum unit power, and the output powers of the other fixed power modules are in corresponding multiples with the minimum unit power. In the present embodiment, it may be assumed that the output power of the minimum fixed power module is 15kW, and a certain number of fixed power modules may be configured as fixed power modules of 30kW, 45kW, or more.
FIG. 3 is a flowchart of the steps of a first embodiment of configuring the number of fixed power modules based on charging output power requirements; in this embodiment, the method for configuring the number of the fixed power modules by the power distribution module according to the charging output power requirement includes: the power distribution module is suitable for numbering and stacking all the fixed power modules; if the charging output power is equal to the algebraic sum of the output powers of the corresponding fixed power modules, the following steps are executed:
step S11, the power distribution module is suitable for selecting the fixed power module which is smaller than and has the nearest output power of the charging output end according to the serial number of each fixed power module;
step S12, calculating the power difference value of the total power output by the charging output end and the current fixed power module, and selecting the fixed power module smaller than and closest to the power difference value again;
and step S13, repeating the step S12 until the total output power of each fixed power module is matched with the charging output power.
For example, when the charging output power is 60kw, the fixed power modules corresponding to 45kw are selected in step S11, and then the fixed power modules corresponding to 15kw are selected in step S12 to collectively output 60kw of power.
FIG. 4 is a flowchart of the steps of a second embodiment of configuring the number of fixed power modules based on charging output power requirements; the method for configuring the number of the fixed power modules by the power distribution module according to the charging output power requirement further comprises the following steps: if the charging output power is smaller than the algebraic sum of the output powers of the corresponding fixed power modules, the following steps are executed:
step S21, the power distribution module is suitable for selecting the fixed power module which is smaller than and has the nearest output power of the charging output end according to the serial number of each fixed power module;
step S22, calculating the power difference value of the total power output by the charging output end and the current fixed power module, and selecting the fixed power module smaller than and closest to the power difference value again;
and step S23, repeating step S22 until the remaining fixed power modules can not be matched with the current power difference value, and selecting the fixed power module which is larger than and closest to the power difference value.
For example, when the charging output power is 80kw, the fixed power module corresponding to 45kw is selected in step S21, the fixed power module corresponding to 30kw is selected in step S12, and the fixed power module corresponding to 15kw is selected in step S13, and the power of 90kw is output together.
The power distribution module and each fixed power module are suitable for communication through the CAN module so as to select and control each fixed power module.
Example 2
On the basis of embodiment 1, this embodiment 2 provides a charging pile power supply system.
Fill electric pile power supply system includes: at least one power distribution module and a plurality of fixed power modules; and the power distribution module is suitable for configuring the number of the fixed power modules according to the charging output power requirement.
The output power of each fixed power module is in a certain multiple; that is, the output power of one fixed power module is set to be the minimum unit power, and the output power of the other fixed power modules is a multiple of the minimum unit power.
The output power of each fixed power module is in a certain multiple; that is, the output power of one fixed power module is set to be the minimum unit power, and the output power of the other fixed power modules is a multiple of the minimum unit power.
The power distribution module and each fixed power module are suitable for communication through the CAN module so as to select and control each fixed power module.
The method for configuring the number of the fixed power modules by the power distribution module according to the power requirement of the charging output end further comprises the following steps: if the charging output power is less than the output power algebraic sum of the corresponding fixed power modules, the power distribution module is suitable for selecting the fixed power module which is less than and closest to the output power of the charging output end according to the serial number of each fixed power module; and calculating a power difference value of the total power output by the charging output end and the current fixed power module, selecting the fixed power module smaller than and closest to the power difference value again, and repeating the step until the remaining fixed power modules cannot be matched with the power difference value, and selecting the fixed power module larger than and closest to the power difference value.
In this embodiment, if the charging output power is smaller than the algebraic sum of the output powers of the corresponding fixed power modules, the power distribution module is adapted to select the fixed power module smaller than and closest to the output power of the charging output terminal according to the serial number of each fixed power module; and calculating a power difference value of the total power output by the charging output end and the current fixed power module, selecting the fixed power module smaller than and closest to the power difference value again, and repeating the step until the remaining fixed power modules cannot be matched with the current power difference value, and selecting the fixed power module larger than and closest to the power difference value.
The invention aims to reduce the number of contactors and realize the unchanged performance of power distribution of a charging pile by reasonably scheduling fixed power modules. The invention carries out quota matching on the fixed power modules according to the requirements, for example, a plurality of fixed power modules which are multiples of the minimum unit power are configured, but the minimum unit is not used as the module. Assuming that the output power of the minimum fixed power module is 15kW, a certain number of fixed power modules of 30kW, 45kW, or more power may be configured. The power distribution module is suitable for numbering and stacking all the fixed power modules, and when power is output, the fixed power module closest to the requirement is mounted and output according to the requirement of an output end, and then the small module is matched to finally realize the output of rated power. Thus, power distribution is not required to be performed by taking the minimum unit as a unit, so that the reduction of a larger number of contactors can be realized, the cost is saved, and the efficiency is improved.
The invention can realize energy saving, consumption reduction and economic cost when the power is not supplied in standby. A large amount of contactors are less configured, and pile construction cost can be reduced.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (3)
1. A charge stack power supply unit scheduling algorithm, comprising:
at least one power distribution module and a plurality of fixed power modules; and
the power distribution module is suitable for configuring the number of the fixed power modules according to the charging output power requirement;
the output power of each fixed power module is in a certain multiple; namely, it is
Setting the output power of one fixed power module as the minimum unit power, wherein the output power of the other fixed power modules is in corresponding multiple with the minimum unit power, and the multiple is an integral multiple greater than 1;
the method for configuring the number of the fixed power modules by the power distribution module according to the charging output power requirement comprises the following steps:
the power distribution module is suitable for numbering and stacking all the fixed power modules;
if the charging output power is equal to the algebraic sum of the output powers of the corresponding fixed power modules, that is
The following steps are carried out:
step S11, the power distribution module is suitable for selecting the fixed power module which is smaller than and closest to the output power of the charging output end according to the serial number of each fixed power module;
step S12, calculating the power difference value of the total power output by the charging output end and the current fixed power module, and selecting the fixed power module smaller than and closest to the power difference value again;
step S13, repeating step S12 until the total output power of each fixed power module is matched with the charging output power;
the method for configuring the number of the fixed power modules by the power distribution module according to the charging output power requirement further comprises the following steps:
if the charging output power is less than the algebraic sum of the output powers of the corresponding fixed power modules, that is
The following steps are carried out:
step S21, the power distribution module is suitable for selecting the fixed power module which is smaller than and closest to the output power of the charging output end according to the serial number of each fixed power module;
step S22, calculating the power difference value of the total power output by the charging output end and the current fixed power module, and selecting the fixed power module smaller than and closest to the power difference value again;
and step S23, repeating step S22 until the remaining fixed power modules can not be matched with the current power difference value, and selecting the fixed power module which is larger than and closest to the power difference value.
2. The charge stack power supply unit scheduling algorithm of claim 1,
the power distribution module and each fixed power module are suitable for communication through the CAN module so as to select and control each fixed power module.
3. A charging pile power supply system, comprising:
at least one power distribution module and a plurality of fixed power modules; and
the power distribution module is suitable for configuring the number of the fixed power modules according to the charging output power requirement;
the output power of each fixed power module is in a certain multiple; namely, it is
Setting the output power of one fixed power module as the minimum unit power, and setting the output power of the other fixed power modules as the multiple of the minimum unit power, wherein the multiple is an integral multiple greater than 1;
the power distribution module is suitable for communicating with each fixed power module through a CAN (controller area network) module so as to select and control each fixed power module;
the method for configuring the number of the fixed power modules by the power distribution module according to the power requirement of the charging output end further comprises the following steps:
if the charging output power is less than the algebraic sum of the output powers of the corresponding fixed power modules, that is
The power distribution module is suitable for selecting a fixed power module which is smaller than and closest to the output power of the charging output end according to the serial number of each fixed power module;
calculating a power difference value of the total power output by the charging output end and the current fixed power module, selecting the fixed power module smaller than and closest to the power difference value again, and repeating the step until the remaining fixed power modules cannot be matched with the power difference value, and selecting the fixed power module larger than and closest to the power difference value; and
if the charging output power is less than the algebraic sum of the output powers of the corresponding fixed power modules, that is
The power distribution module is suitable for selecting a fixed power module which is smaller than and closest to the output power of the charging output end according to the serial number of each fixed power module;
and calculating a power difference value of the total power output by the charging output end and the current fixed power module, selecting the fixed power module smaller than and closest to the power difference value again, and repeating the step until the remaining fixed power modules cannot be matched with the current power difference value, and selecting the fixed power module larger than and closest to the power difference value.
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| CN112776633B (en) * | 2019-11-07 | 2022-05-17 | 国创移动能源创新中心(江苏)有限公司 | Charging system and method adopting mobile power distribution unit |
| CN111071092B (en) * | 2019-12-17 | 2023-05-02 | 福建星云电子股份有限公司 | Dynamic distribution system and method for power of charging pile |
| CN111016724B (en) * | 2019-12-18 | 2021-08-13 | 南方电网电力科技股份有限公司 | Charging pile self-adaptive power distribution method, system and equipment |
| CN113043898A (en) * | 2021-05-12 | 2021-06-29 | 万帮数字能源股份有限公司 | Charging pile automatic power distribution method based on annular connection method |
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