CN114256848A - Control method for realizing dynamic balance charging of household load - Google Patents
Control method for realizing dynamic balance charging of household load Download PDFInfo
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- CN114256848A CN114256848A CN202111597030.1A CN202111597030A CN114256848A CN 114256848 A CN114256848 A CN 114256848A CN 202111597030 A CN202111597030 A CN 202111597030A CN 114256848 A CN114256848 A CN 114256848A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
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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
- B60L53/63—Monitoring or controlling charging stations in response to network capacity
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/10—The network having a local or delimited stationary reach
- H02J2310/12—The local stationary network supplying a household or a building
- H02J2310/14—The load or loads being home appliances
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
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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
- Y02T10/70—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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention belongs to the technical field of charging piles, in particular to a charging control method for realizing dynamic balance of household load, and provides the following scheme, wherein the charging control method comprises the following steps of: s1: reading the current value I1 of the household electric meter before starting charging; s11, calculating a rated current value I2 of the charging pile, wherein the current I2 is the current value of the maximum current value IMAX-I1 of the home network; s2: detecting the current value I3 of the household electric meter in real time in the charging process; s21: and detecting the rated current value I4 of the charging pile in real time in the charging process. The invention can effectively control the output current value of the charging pile, effectively solve the problem caused by the change between household load balances, ensure that the whole household power utilization network does not exceed the maximum current value of the household network, prevent the household open trip from influencing the service life of household appliances, and prevent the processed appliances from being incapable of charging or causing fire due to overheating.
Description
Technical Field
The invention relates to the technical field of charging piles, in particular to a charging control method for realizing dynamic balance of household loads.
Background
At present fill electric pile family use, because the inlet wire electric current of every family of reason of electric wire netting receives the restriction, if do not restrict the output current who fills electric pile, then arouse the tripping operation of opening in the air in the house, influence domestic appliance's life-span, can't charge or overheated arouse the conflagration when more serious, bring very big inconvenience for the user.
Therefore, the intelligent load balance control method can meet the normal use requirement of the charging pile, can also meet the normal work requirement of household appliances, improves the utilization rate of a household power grid, and is convenient for users to use.
Disclosure of Invention
The control method for realizing the dynamic balance charging of the household load can dynamically adjust the output power of the charging pile and ensure the household power utilization safety.
In order to achieve the purpose, the invention adopts the following technical scheme:
a control method for realizing the dynamic balance of charging of a family load can dynamically adjust the output power of a charging pile, and comprises the following steps:
s1: reading the current value I1 of the household electric meter before starting charging;
s11, calculating a rated current value I2 of the charging pile, wherein the current I2 is the current value of the maximum current value IMAX-I1 of the home network;
s2: detecting the current value I3 of the household electric meter in real time in the charging process;
s21: detecting the rated current value I4 of the charging pile in real time in the charging process;
s3: calculating the current value of I5 in the charging process, wherein the current I5 is the current value obtained by subtracting I4 from I3;
s4: calculating the difference value delta I current value between I5 and I1 in the charging process, and comparing the delta I current value;
s5: when the value of the delta I is larger than 0 and exceeds a fixed value N in the step S4, adjusting the PWM of the charging pile to correspondingly reduce by 0.6A/delta I, and stopping charging if the reduced PWM is lower than the duty ratio corresponding to 6A;
s6: when the value of the delta I is smaller than 0 in the step S4 and the absolute value exceeds a fixed value N, adjusting the PWM of the charging pile to correspondingly increase 0.6A/delta I, improving the overcurrent value of the corresponding charging pile and continuing charging;
it should be noted that the step S5 further includes the following steps:
s51: after the PWM value of the charging pile is adjusted, waiting for a certain time to check the actual current value I4 output by the charging pile;
s52: if the current value of I4 does not correspond to the PWM value of the charging pile, continuously adjusting the duty ratio of the charging pile to the minimum value, replacing the current value of I1 with the current value of I5, and returning to the charging process to continue detecting;
s53: if the current value of I4 corresponds to the charging pile PWM value, the current value of I1 is replaced by the current value of I5, and the detection is continued in the process of returning to charging.
It is worth mentioning that the step S6 further includes the following steps:
s61: and after the increase, the PWM is not allowed to exceed the PWM value corresponding to the maximum rated value of the charging pile, and if the PWM value is larger than the rated value of the charging pile, the output is still output according to the maximum rated PWM.
S62: at this time, the current value of I1 is replaced by the current value of I5, and the detection is continued while returning to the charging.
It is to be noted that the step of S4 further includes the following steps;
s41, determining that the delta I current value is greater than 0 and lasts for a certain time T1;
s41 a: the Δ I current value is greater than 0 and continues for a certain time T1, and the subsequent step S5 is performed;
s41 b: if the Δ I current value is greater than 0 and cannot last for a certain time T1, the timer is incremented until the Δ I current value is greater than 0 and lasts for a certain time T1, and then the subsequent step S5 is performed.
It is worth mentioning that: the T1 time in the S41 was 5S.
Compared with the prior art, the invention has the beneficial effects that:
the invention can effectively control the output current value of the charging pile, effectively solve the problem caused by the change between the household load balances, read the current value of the household ammeter before charging and compare the difference value with the use current value of the charging pile, and the output current value of the charging pile needs to be adjusted in real time when the difference value changes in the charging pile process, so as to ensure that the whole household power utilization network does not exceed the maximum current value of the household network, prevent the household tripping operation from being opened without the household, influence the service life of household appliances, and prevent the processed appliances from being charged or causing fire disaster due to overheating.
Drawings
Fig. 1 is a schematic diagram of the connection of the charging apparatus of the present invention to a home power grid;
FIG. 2 is a diagram illustrating the relationship between the whole network system of the home load and the household appliances Δ I according to the present invention;
FIG. 3 is a flow chart of the present invention when the output PWM of the charging pile decreases during charging;
fig. 4 is a flowchart of the increase of the PWM output of the charging pile in the charging process according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1: setting N to 2A, T1 to 5 s;
referring to fig. 1 to 4, a method for implementing a home load dynamic balance charging control, which can dynamically adjust an output power of a charging pile, includes the following steps:
s1: reading the current value I1 of the household electric meter before starting charging;
s11, calculating a rated current value I2 of the charging pile, wherein the current I2 is the current value of the maximum current value IMAX-I1 of the home network, if the current I2 is less than 6A, the charging cannot be carried out, and a screen carries out corresponding prompt, and if the current I2 exceeds the maximum rated value of the charging pile, the current is output according to the rated power of the charging pile;
s2: detecting the current value I3 of the household electric meter in real time in the charging process;
s21: detecting the rated current value I4 of the charging pile in real time in the charging process;
s3: calculating the current value of I5 in the charging process, wherein the current I5 is the current value obtained by subtracting I4 from I3;
s4: calculating the difference value delta I current value between I5 and I1 in the charging process, and comparing the delta I current value;
s41, determining the current value of the delta I to be more than 0 and lasting for 5S;
s41 a: the Δ I current value continues for 5S when it is greater than 0, and the subsequent step S5 is performed;
s41 b: if the Δ I current value is greater than 0 and cannot continue for 5 seconds, the timer is incremented, and the loop continues to loop through step S4 until the Δ I current value continues for 5 seconds while being greater than 0, and then the subsequent step S5 is performed.
S5: when the value of delta I in the step S4 is greater than 0 and exceeds 2A, adjusting the PWM of the charging pile to correspondingly reduce by 0.6A/delta I, and stopping charging if the reduced PWM is lower than the duty ratio corresponding to 6A;
s51: after the PWM value of the charging pile is adjusted, waiting for a certain time to check the actual current value I4 output by the charging pile;
s52: if the current value of I4 does not correspond to the PWM value of the charging pile, continuously adjusting the duty ratio of the charging pile to the minimum value, replacing the current value of I1 with the current value of I5, and returning to the charging process to continue detecting;
s53: if the current value of I4 corresponds to the PWM value of the charging pile, replacing the current value of I1 with the current value of I5, and returning to the charging process to continue detecting;
s6: when the value of the delta I is smaller than 0 and the absolute value exceeds 2A in the step S4, adjusting the PWM of the charging pile to correspondingly increase 0.6A/delta I, improving the overcurrent value of the corresponding charging pile and continuing charging;
s61: and after the increase, the PWM is not allowed to exceed the PWM value corresponding to the maximum rated value of the charging pile, and if the PWM value is larger than the rated value of the charging pile, the output is still output according to the maximum rated PWM.
S62: at this time, the current value of I1 is replaced by the current value of I5, and the detection is continued while returning to the charging.
Example 2: setting N to 1A, T1 to 3 s;
referring to fig. 1 to 4, a method for implementing a home load dynamic balance charging control, which can dynamically adjust an output power of a charging pile, includes the following steps:
s1: reading the current value I1 of the household electric meter before starting charging;
s11, calculating a rated current value I2 of the charging pile, wherein the current I2 is the current value of the maximum current value IMAX-I1 of the home network, if the current I2 is less than 6A, the charging cannot be carried out, and a screen carries out corresponding prompt, and if the current I2 exceeds the maximum rated value of the charging pile, the current is output according to the rated power of the charging pile;
s2: detecting the current value I3 of the household electric meter in real time in the charging process;
s21: detecting the rated current value I4 of the charging pile in real time in the charging process;
s3: calculating the current value of I5 in the charging process, wherein the current I5 is the current value obtained by subtracting I4 from I3;
s4: calculating the difference value delta I current value between I5 and I1 in the charging process, and comparing the delta I current value;
s41, determining the current value of the delta I to be more than 0 and lasting for 3S;
s41 a: continuing the Δ I current value for 3S when the Δ I current value is greater than 0, and performing the subsequent step S5;
s41 b: if the Δ I current value is greater than 0 and cannot continue for 3 seconds, the timer is incremented, and the loop continues to loop through step S4 until the Δ I current value continues for 3 seconds while being greater than 0, and then the subsequent step S5 is performed.
S5: when the value of delta I in the step S4 is greater than 0 and exceeds 1A, adjusting the PWM of the charging pile to correspondingly reduce by 0.6A/delta I, and stopping charging if the reduced PWM is lower than the duty ratio corresponding to 6A;
s51: after the PWM value of the charging pile is adjusted, waiting for a certain time to check the actual current value I4 output by the charging pile;
s52: if the current value of I4 does not correspond to the PWM value of the charging pile, continuously adjusting the duty ratio of the charging pile to the minimum value, replacing the current value of I1 with the current value of I5, and returning to the charging process to continue detecting;
s53: if the current value of I4 corresponds to the PWM value of the charging pile, replacing the current value of I1 with the current value of I5, and returning to the charging process to continue detecting;
s6: when the value of the delta I is smaller than 0 and the absolute value exceeds 1A in the step S4, adjusting the PWM of the charging pile to correspondingly increase 0.6A/delta I, improving the overcurrent value of the corresponding charging pile and continuing charging;
s61: and after the increase, the PWM is not allowed to exceed the PWM value corresponding to the maximum rated value of the charging pile, and if the PWM value is larger than the rated value of the charging pile, the output is still output according to the maximum rated PWM.
S62: at this time, the current value of I1 is replaced by the current value of I5, and the detection is continued while returning to the charging.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. A control method for realizing the dynamic balance of charging of a household load can dynamically adjust the output power of a charging pile, and is characterized by comprising the following steps:
s1: reading the current value I1 of the household electric meter before starting charging;
s11, calculating a rated current value I2 of the charging pile, wherein the current I2 is the current value of the maximum current value IMAX-I1 of the home network;
s2: detecting the current value I3 of the household electric meter in real time in the charging process;
s21: detecting the rated current value I4 of the charging pile in real time in the charging process;
s3: calculating the current value of I5 in the charging process, wherein the current I5 is the current value obtained by subtracting I4 from I3;
s4: calculating the difference value delta I current value between I5 and I1 in the charging process, and comparing the delta I current value;
s5: when the value of the delta I is larger than 0 and exceeds a fixed value N in the step S4, adjusting the PWM of the charging pile to correspondingly reduce by 0.6A/delta I, and stopping charging if the reduced PWM is lower than the duty ratio corresponding to 6A;
s6: and when the value of the delta I in the step S4 is smaller than 0 and the absolute value exceeds a fixed value N, adjusting the PWM of the charging pile to correspondingly increase 0.6A/delta I, improving the overcurrent value of the corresponding charging pile and continuing to charge.
2. The method for controlling charging to achieve dynamic balance of household loads according to claim 1, wherein the step of S5 further comprises the following steps:
s51: after the PWM value of the charging pile is adjusted, waiting for a certain time to check the actual current value I4 output by the charging pile;
s52: if the current value of I4 does not correspond to the PWM value of the charging pile, continuously adjusting the duty ratio of the charging pile to the minimum value, replacing the current value of I1 with the current value of I5, and returning to the charging process to continue detecting;
s53: if the current value of I4 corresponds to the charging pile PWM value, the current value of I1 is replaced by the current value of I5, and the detection is continued in the process of returning to charging.
3. The method for controlling charging to achieve dynamic balance of household loads according to claim 1, wherein the step of S6 further comprises the steps of:
s61: and after the increase, the PWM is not allowed to exceed the PWM value corresponding to the maximum rated value of the charging pile, and if the PWM value is larger than the rated value of the charging pile, the output is still output according to the maximum rated PWM.
S62: at this time, the current value of I1 is replaced by the current value of I5, and the detection is continued while returning to the charging.
4. The method for controlling charging to realize dynamic balance of household loads according to claim 1, wherein the step of S4 further comprises the following steps;
s41, determining that the delta I current value is greater than 0 and lasts for a certain time T1;
s41 a: the Δ I current value is greater than 0 and continues for a certain time T1, and the subsequent step S5 is performed;
s41 b: if the Δ I current value is greater than 0 and cannot last for a certain time T1, the timer is incremented until the Δ I current value is greater than 0 and lasts for a certain time T1, and then the subsequent step S5 is performed.
5. The method as claimed in claim 4, wherein the time T1 of S41 is 5S.
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CN212751870U (en) * | 2020-08-06 | 2021-03-19 | 哈尔滨普发新能源有限公司 | Charging column system capable of dynamically adjusting output power |
CN112564191A (en) * | 2019-09-10 | 2021-03-26 | 国创新能源汽车能源与信息创新中心(江苏)有限公司 | Dynamic adjusting device and method for charging current of electric automobile |
CN113690909A (en) * | 2021-07-29 | 2021-11-23 | 国创移动能源创新中心(江苏)有限公司 | Power allocation method and device for three-phase charging pile |
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2021
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US20180264966A1 (en) * | 2017-03-17 | 2018-09-20 | Delta Electronics, Inc. | Power supply system and method of operating the same |
CN110797858A (en) * | 2018-08-02 | 2020-02-14 | 赫克斯冈技术中心 | Power grid management |
US20200161859A1 (en) * | 2018-11-21 | 2020-05-21 | Ford Global Technologies, Llc | Integrated vehicle-to-home energy management system |
CN112564191A (en) * | 2019-09-10 | 2021-03-26 | 国创新能源汽车能源与信息创新中心(江苏)有限公司 | Dynamic adjusting device and method for charging current of electric automobile |
CN212751870U (en) * | 2020-08-06 | 2021-03-19 | 哈尔滨普发新能源有限公司 | Charging column system capable of dynamically adjusting output power |
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