CN116424142A - Charger, power distribution method and power distribution device thereof - Google Patents

Charger, power distribution method and power distribution device thereof Download PDF

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Publication number
CN116424142A
CN116424142A CN202310310143.1A CN202310310143A CN116424142A CN 116424142 A CN116424142 A CN 116424142A CN 202310310143 A CN202310310143 A CN 202310310143A CN 116424142 A CN116424142 A CN 116424142A
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China
Prior art keywords
module
charging
power
charger
current
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Pending
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CN202310310143.1A
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Chinese (zh)
Inventor
蔡威
鲁天赐
刘晓伟
方成林
周斌
杜和峻
陈卡
李新海
牛斌
叶权海
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Wuhan Hezhi Digital Energy Technology Co ltd
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Wuhan Hezhi Digital Energy Technology Co ltd
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Priority to CN202310310143.1A priority Critical patent/CN116424142A/en
Publication of CN116424142A publication Critical patent/CN116424142A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/66—Data transfer between charging stations and vehicles
    • 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
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention relates to a charger, a power distribution method and a power distribution device thereof, wherein the method comprises the following steps: determining the required power and the required current of the vehicle to be charged; determining rated power and maximum current of each charging module in the charger; calculating the number of required charging modules based on the required power and the rated power, or the required current and the maximum current; selecting all charging modules required in the charger based on a preset selection principle, and combining the selected charging modules to obtain a combined charging module; and calling the combined charging module to charge the vehicle to be charged. The invention pre-determines the number of the required charging modules, then selects each required charging module in the charger based on a preset selection principle, and reduces the problem of charging power redundancy caused by unreasonable charging power distribution.

Description

Charger, power distribution method and power distribution device thereof
Technical Field
The invention relates to the technical field of electric automobile chargers, in particular to a charger, a power distribution method and a power distribution device thereof.
Background
With the popularization of electric vehicles, a charger has been developed. The charger can provide charging service for electric automobiles, but the power required by different types of vehicles is different, so that the charger on the market at present adopts various topology schemes for power distribution, such as full matrix, ring and other circuit topologies, in order to meet the quick charging requirement of users, and a high-power charging module is generally adopted in order to reduce the cost of the charger. For this part of wasted charging power, there is no way to distribute it to other vehicles, not only wasting charging power resources, but also affecting the charging experience of other users.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a charger, a power distribution method and a power distribution device thereof, so as to solve the problem of charging power redundancy caused by unreasonable charging power distribution in the prior art.
In order to solve the above problems, in a first aspect, the present invention provides a method for distributing power of a charger, including:
determining the required power and the required current of the vehicle to be charged;
determining rated power and maximum current of each charging module in the charger;
calculating the number of required charging modules based on the required power and the rated power, or the required current and the maximum current;
selecting all charging modules required in the charger based on a preset selection principle, and combining the selected charging modules to obtain a combined charging module;
and calling the combined charging module to charge the vehicle to be charged.
Further, calculating the first number of required charging modules based on the required power and the rated power includes:
calculating a first number of required charging modules according to a first ratio of the required power to the rated power;
calculating a second number of required charging modules based on the required current and the maximum current, comprising:
and calculating a second number of the required charging modules according to a second ratio of the required current to the maximum current.
Further, if the first number is greater than the second number, the first number is taken as the number of the required charging modules;
if the second number is larger than the first number, taking the second number as the number of the required charging modules;
and if the first number is equal to the second number, taking the first number or the second number as the number of the required charging modules.
Further, the selecting, in the charger, a required charging module based on a preset selection principle includes:
and selecting a required charging module based on a preset selection sequence and the working state of each charging module.
Further, the merging the selected charging modules includes:
and carrying out parallel operation on each selected charging module.
Further, the required power and the required current of the vehicle to be charged are determined based on the vehicle nameplate of the vehicle to be charged.
Further, the current value provided by each charging module in the charger is within a preset range.
In a second aspect, the present invention further provides a charger power distribution device, including:
the first determining module is used for determining the required power and the required current of the vehicle to be charged;
the second determining module is used for determining rated power and maximum current of each charging module in the charger;
the calculation module is used for calculating the number of required charging modules based on the required power and the rated power or the required current and the maximum current;
the selecting module is used for selecting all the charging modules required in the charger based on a preset selecting principle, and combining the selected charging modules to obtain a combined charging module;
and the calling module is used for calling the combined charging module to charge the vehicle to be charged.
In a third aspect, the invention further provides a charger, which comprises a memory and a processor, wherein the memory is used for storing a program; the processor is coupled to the memory and is configured to execute the program stored in the memory to implement the steps in the power allocation method.
In a fourth aspect, the present invention further provides a computer readable storage medium storing a computer readable program or instructions, which when executed by a processor, enable implementation of the steps in the above-described method for allocating battery charger power.
The beneficial effects of adopting the embodiment are as follows:
according to the invention, the required power and the required current of the vehicle to be charged and the rated power and the maximum current of each charging module are determined, so that the number of the charging modules required by the vehicle to be charged is calculated through the power angle or the current angle, and the use experience of electric automobile users is ensured; and then, combining the characteristics of the charging modules with any power in the charger, selecting and combining the charging modules in the charger according to a preset selection principle, reducing the redundancy of the charging power, and improving the charging experience of other users.
Drawings
Fig. 1 is a flow chart illustrating an embodiment of a method for allocating battery charger power according to the present invention;
fig. 2 is a topology diagram of a charging module in a charger according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an embodiment of a charger power distribution device according to the present invention;
fig. 4 is a schematic structural diagram of an embodiment of a charger according to the present invention.
Detailed Description
Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and together with the description serve to explain the principles of the invention, and are not intended to limit the scope of the invention.
In the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. Furthermore, the meaning of "a plurality of" means two or more, unless specifically defined otherwise. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Before the description of the embodiments, the related words are interpreted:
the charger adopts a high-frequency power supply technology and uses an advanced intelligent dynamic adjustment charging technology. The intelligent charging system adopts a constant-current/constant-voltage/small-constant-current intelligent three-stage charging mode, and has the characteristics of high charging efficiency, simplicity in operation, light weight, small volume and the like. In practical applications, selecting different charging modes of the charger according to the limit of the battery capacity is a necessary choice for prolonging the service life of the storage battery. The lithium ion battery charger has more charging methods, and the simplest is a constant voltage charger charging method. The most widely used electric car charging is a power frequency charger and a high frequency charger. The industrial frequency charger has the characteristics of large volume, large weight, high power consumption, reliable performance and low price.
Specific embodiments are described in detail below:
referring to fig. 1, fig. 1 is a flow chart of an embodiment of a power distribution method of a charger according to the present invention, and a specific embodiment of the present invention discloses a power distribution method of a charger, including:
step S101: determining the required power and the required current of the vehicle to be charged;
step S102: determining rated power and maximum current of each charging module in the charger;
step S103: calculating the number of required charging modules based on the required power and the rated power, or the required current and the maximum current;
step S104: selecting all charging modules required in the charger based on a preset selection principle, and combining the selected charging modules to obtain a combined charging module;
step S105: and calling the combined charging module to charge the vehicle to be charged.
It can be understood that, because the vehicle models of the electric vehicles are different, the required power and the required current of each vehicle to be charged are different, and specifically, the required power and the required power supply of the vehicle to be charged can be obtained by checking the vehicle nameplate. And when the charging is started, the charger is communicated with the electric automobile, so that charging demand voltage, charging demand current and charging demand power are obtained.
It should be noted that, the charger in the embodiment of the application includes a plurality of charging modules, and the number of the charging modules can be selected according to the requirement of the vehicle to be charged, so as to reasonably utilize the charging resources. Specifically, the rated power and the maximum current of each charging module in the charger can be determined, and then the number of the required charging modules can be calculated based on the required power and the rated power or the required current and the maximum current. In addition, each charging module can provide a current value within a preset range. Therefore, the dynamic change can be carried out according to the actual charging condition of the vehicle to be charged in the charging process, and the effect of reducing the electric power redundancy is achieved.
After the number of the charging modules is determined, each charging module required in the charger can be selected based on a preset selection principle, and the selected charging modules are combined to obtain a combined charging module, and it is understood that the charging power can be increased by combining any charging modules. And finally, calling a combined charging module to charge the vehicle to be charged.
According to the invention, the required power and the required current of the vehicle to be charged and the rated power and the maximum current of each charging module are determined, so that the number of the charging modules required by the vehicle to be charged is calculated through the power angle or the current angle, and the use experience of electric automobile users is ensured; and then, combining the characteristics of the charging modules with any power in the charger, selecting and combining the charging modules in the charger according to a preset selection principle, reducing the redundancy of the charging power, and improving the charging experience of other users.
In one embodiment of the invention, calculating the first number of required charging modules based on the required power and the rated power includes:
calculating a first number of required charging modules according to a first ratio of the required power to the rated power;
calculating a second number of required charging modules based on the required current and the maximum current, comprising:
and calculating a second number of the required charging modules according to a second ratio of the required current to the maximum current.
If the first number is larger than the second number, taking the first number as the number of the required charging modules;
if the second number is larger than the first number, taking the second number as the number of the required charging modules;
and if the first number is equal to the second number, taking the first number or the second number as the number of the required charging modules.
It is understood that the number of charging modules required is calculated based on the power limit and current limit characteristics of the charging modules. Specifically, when estimating the first number of charging modules based on the power platform, assuming that the current required power is PQ and the rated power of each charging module is PM, estimating the first number k1=pq/PM; when estimating the second number of charging modules based on the current platform, assuming the current requirement IQ, the maximum current of each charging module is M, and estimating the second number k2=iq/IM. The power plateau estimate is then compared to the current plateau estimate. And the larger value is taken as a charging module requirement value K so as to ensure the user experience of the vehicle owner to be charged.
In one embodiment of the present invention, the selecting, in the charger, a desired charging module based on a preset selection principle includes:
and selecting a required charging module based on a preset selection sequence and the working state of each charging module.
Combining the selected charging modules comprises the following steps:
and carrying out parallel operation on each selected charging module.
Referring to fig. 2, fig. 2 is a topology diagram of a charging module in a charging machine according to an embodiment of the invention. The round charging modules are also called power units, connecting lines between the round charging modules are switching units, and each charging module can be connected with one output. The charging modules are connected in parallel to form a specific relation.
The charging module can collect the power (less than or equal to the total power) of any unit to one place through the switching unit, and the charging power is increased. Compared with other topological structures, the grid topological structure switching unit is fewer, and the parallel operation efficiency can be improved.
For example, please refer to fig. 2:
if the charging requirement is 1 charging module, the charging power PM can be judged after the module a is started, the current IM can be output, and comparison is carried out according to the charging requirement, so that the requirement is met after the module a is started, other modules are not needed to be incorporated, and the module a can be started only to charge the vehicle to be charged.
If the charging requirement is 2 charging modules. After the module a is started, the output power PM of the charging machine can be judged, the current IM can be output, the comparison is carried out according to the charging requirement, and the requirement is not met, so that the module b is preferentially selected from the right side of the module a according to the preset selection sequence, namely, the selection sequence from the right side to the bottom, then the current state of the module b is judged, if the module b is in a working state, the module e is selected from the bottom of the module a, then the state of the module e is judged, if the module e is in the working state, the operation is not carried out, and the machine is ended.
And if the module b is in a non-working state, closing the switching unit between the modules a and b, and starting the module b. At this time, the system can output 2PM and 2IM current, and the comparison is performed according to the charging requirement. No further modules need to be incorporated if satisfied. And the module a and the module b can be started to charge the vehicle to be charged.
If the charging requirement is 3 charging modules. After the module a is started, the output power PM of the charging machine can be judged, the current IM can be output, the comparison is carried out according to the charging requirement, and the requirement is not met, so that the module b is preferentially selected from the right side of the module a according to the preset selection sequence, namely, the selection sequence from the right side to the bottom, then the current state of the module b is judged, if the module b is in a working state, the module e is selected from the bottom of the module a, then the state of the module e is judged, if the module e is in the working state, the operation is not carried out, and the machine is ended.
And if the module b is in a non-working state, closing the switching unit between the modules a and b, and starting the module b. At this time, the system can output 2PM and 2IM current, and the comparison according to the charging requirement is not satisfied.
And if the e module is in a non-working state, closing the switching unit between the a and the e, and starting the e module. At this time, the system can output 3PM and 3IM current, and the comparison is performed according to the charging requirement, so that other modules are not needed to be combined. And starting the modules a, b and e to charge the vehicle to be charged.
And if the e module is in a working state, judging the c and f states. And if c and f are in the working state, the parallel operation is finished. Assuming that the module c is in a non-working state, the module f is in a working state. And closing the switching unit between b and c, and starting the c module. At this time, the system can output 3PM and 3IM current, and the comparison is performed according to the charging requirement, so that other modules are not needed to be combined. And starting the modules a, b and c to charge the vehicle to be charged.
Assuming that the f module is in a non-working state, the c module is in a working state. And closing the switching unit between b and f and starting f. At this time, the system can output 3PM and 3IM current, and the comparison is performed according to the charging requirement, so that other modules are not needed to be combined. And the modules a, b and f can be started to charge the vehicle to be charged.
If the charging requirement is 4 charging modules. After the module a is started, the output power PM of the charging machine can be judged, the current IM can be output, the comparison is carried out according to the charging requirement, and the requirement is not met, so that the module b is preferentially selected from the right side of the module a according to the preset selection sequence, namely, the selection sequence from the right side to the bottom, then the current state of the module b is judged, if the module b is in a working state, the module e is selected from the bottom of the module a, then the state of the module e is judged, if the module e is in the working state, the operation is not carried out, and the machine is ended.
And if the module b is in a non-working state, closing the switching unit between the modules a and b, and starting the module b. At this time, the system can output 2PM and 2IM current, and the comparison according to the charging requirement is not satisfied. Judging the state of the c module, and if the c module is in the working state, not operating.
And if the e module is in a non-working state, closing the switching unit between the a and the e, and starting the e module. At this time, the system can output 2PM and 2IM current, which is not satisfied according to the charging requirement. Judging the state of the i module, and if the i module is in a working state, not operating.
And if the module c is in a non-working state, closing the switching unit between the module b and the module c, and starting the module c. At this time, the system can output 3PM and 3IM current, which is not satisfied according to the charging requirement. And judging the state of the d module, and if the d module is in the working state, not operating.
And if the i module is in a non-working state, closing the switching unit between the e and i, and starting the i module. At this time, the system can output 3PM and 3IM current, which is not satisfied according to the charging requirement. Judging the state of the j module, and if the j module is in the working state, not operating.
And if the d module is in a non-working state, closing the switching unit between c and d, and starting the d module. At this time, the system can output 4PM and 4IM current, and the comparison is performed according to the charging requirement, so that other modules are not needed to be combined. The a, b, c, d module can be started to charge the vehicle to be charged.
And if the j module is in a non-working state, closing the switching unit between the i and j, and starting the j module. At this time, the system can output 4PM and 4IM current, and the comparison is performed according to the charging requirement, so that other modules are not needed to be combined. The a, e, i, j module can be started to charge the vehicle to be charged.
If the charging requirement is 5 charging modules. After the module a is started, the output power PM of the charging machine can be judged, the current IM can be output, the comparison is carried out according to the charging requirement, and the requirement is not met, so that the module b is preferentially selected from the right side of the module a according to the preset selection sequence, namely, the selection sequence from the right side to the bottom, then the current state of the module b is judged, if the module b is in a working state, the module e is selected from the bottom of the module a, then the state of the module e is judged, if the module e is in the working state, the operation is not carried out, and the machine is ended.
And if the module b is in a non-working state, closing the switching unit between the modules a and b, and starting the module b. At this time, the system can output 2PM and 2IM current, and the comparison according to the charging requirement is not satisfied. Judging the state of the c module, and if the c module is in the working state, not operating.
And if the e module is in a non-working state, closing the switching unit between the a and the e, and starting the e module. At this time, the system can output 2PM and 2IM current, which is not satisfied according to the charging requirement. Judging the state of the i module, and if the i module is in a working state, not operating.
And if the module c is in a non-working state, closing the switching unit between the module b and the module c, and starting the module c. At this time, the system can output 3PM and 3IM current, which is not satisfied according to the charging requirement. And judging the state of the d module, and if the d module is in the working state, not operating.
And if the i module is in a non-working state, closing the switching unit between the e and i, and starting the i module. At this time, the system can output 3PM and 3IM current, which is not satisfied according to the charging requirement. Judging the state of the j module, and if the j module is in the working state, not operating.
And if the d module is in a non-working state, closing the switching unit between c and d, and starting the d module. At this time, the system can output 4PM and 4IM current, if the comparison is not satisfied according to the charging requirement, the state of the h module is judged, and if the h module is in a working state, the operation is not performed.
And if the j module is in a non-working state, closing the switching unit between the i and j, and starting the j module. At this time, the system can output 4PM and 4IM current, and if the comparison is not satisfied according to the charging requirement, the state of the k module is judged, and if the k module is in the working state, the operation is not performed.
And if the h module is in a non-working state, closing the switching unit between d and h, and starting the h module. At this time, the system can output 5PM and 5IM current, and the comparison is performed according to the charging requirement, so that other modules are not needed to be combined. The a, e, c, d, h module can be started to charge the vehicle to be charged.
And if the k module is in a non-working state, closing the switching unit between j and k, and starting k. At this time, the system can output 5PM and 5IM current, and the comparison is performed according to the charging requirement, so that other modules are not needed to be combined. The a, e, i, j, k module can be started to charge the vehicle to be charged.
In order to better implement the charger power distribution method according to the embodiment of the present invention, referring to fig. 3 correspondingly on the basis of the charger power distribution method, fig. 3 is a schematic structural diagram of an embodiment of a charger power distribution device provided by the present invention, and the embodiment of the present invention provides a charger power distribution device 300, which includes:
a first determining module 301, configured to determine a required power and a required current of the vehicle to be charged;
a second determining module 302, configured to determine a rated power and a maximum current of each power unit in the charger;
a calculating module 303, configured to calculate the number of required power units based on the required power and the rated power, or the required current and the maximum current;
the selecting module 304 is configured to select each charging module according to a preset selecting principle in the charger, and combine the selected charging modules to obtain a combined charging module;
and the calling module 305 is configured to call the combined charging module to charge the vehicle to be charged.
What needs to be explained here is: the device 300 provided in the foregoing embodiments may implement the technical solutions described in the foregoing method embodiments, and the specific implementation principles of the foregoing modules or units may be referred to the corresponding content in the foregoing method embodiments, which is not described herein again.
The present invention also provides a charger 400, comprising: a processor 401 and a memory 402, and a computer program 403 stored in the memory and executable on the processor; the steps in the charger power distribution method of each embodiment described above are implemented when the processor executes the computer program.
Based on the above-mentioned battery charger power distribution method, the embodiment of the present invention further provides a corresponding computer readable storage medium, where one or more programs are stored, and the one or more programs may be executed by one or more processors, so as to implement the steps in the battery charger power distribution method according to the above-mentioned embodiments.
Those skilled in the art will appreciate that all or part of the flow of the methods of the embodiments described above may be accomplished by way of a computer program to instruct associated hardware, where the program may be stored on a computer readable storage medium. Wherein the computer readable storage medium is a magnetic disk, an optical disk, a read-only memory or a random access memory, etc.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.

Claims (10)

1. A method for distributing power of a charger, comprising:
determining the required power and the required current of the vehicle to be charged;
determining rated power and maximum current of each charging module in the charger;
calculating the number of required charging modules based on the required power and the rated power, or the required current and the maximum current;
selecting all charging modules required in the charger based on a preset selection principle, and combining the selected charging modules to obtain a combined charging module;
and calling the combined charging module to charge the vehicle to be charged.
2. The method of claim 1, wherein calculating a first number of required charging modules based on the required power and the rated power comprises:
calculating a first number of required charging modules according to a first ratio of the required power to the rated power;
calculating a second number of required charging modules based on the required current and the maximum current, comprising:
and calculating a second number of the required charging modules according to a second ratio of the required current to the maximum current.
3. The method of claim 2, wherein if the first number is greater than the second number, the first number is taken as the number of charging modules required;
if the second number is larger than the first number, taking the second number as the number of the required charging modules;
and if the first number is equal to the second number, taking the first number or the second number as the number of the required charging modules.
4. The method for distributing power to a battery charger according to claim 1, wherein selecting a desired charging module in the battery charger based on a preset selection rule comprises:
and selecting a required charging module based on a preset selection sequence and the working state of each charging module.
5. The method of claim 4, wherein the combining each selected charging module comprises:
and carrying out parallel operation on each selected charging module.
6. The method for distributing power to a battery charger according to claim 1, wherein,
the required power and the required current of the vehicle to be charged are determined based on the vehicle nameplate of the vehicle to be charged.
7. The method for distributing power to a battery charger according to claim 1, wherein,
the current value provided by each charging module in the charger is within a preset range.
8. A charger power distribution device, comprising:
the first determining module is used for determining the required power and the required current of the vehicle to be charged;
the second determining module is used for determining rated power and maximum current of each charging module in the charger;
the calculation module is used for calculating the number of required charging modules based on the required power and the rated power or the required current and the maximum current;
the selecting module is used for selecting all the charging modules required in the charger based on a preset selecting principle, and combining the selected charging modules to obtain a combined charging module;
and the calling module is used for calling the combined charging module to charge the vehicle to be charged.
9. The charger is characterized by comprising a memory and a processor, wherein the memory is used for storing a program; the processor, coupled to the memory, is configured to execute the program stored in the memory to implement the steps in the power allocation method of any one of the preceding claims 1 to 7.
10. A computer readable storage medium storing a computer readable program or instructions which, when executed by a processor, implement the steps in the power allocation method of any one of the preceding claims 1 to 7.
CN202310310143.1A 2023-03-27 2023-03-27 Charger, power distribution method and power distribution device thereof Pending CN116424142A (en)

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