CN114362331A - Charging pile OCP protection system - Google Patents

Charging pile OCP protection system Download PDF

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Publication number
CN114362331A
CN114362331A CN202210262678.1A CN202210262678A CN114362331A CN 114362331 A CN114362331 A CN 114362331A CN 202210262678 A CN202210262678 A CN 202210262678A CN 114362331 A CN114362331 A CN 114362331A
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China
Prior art keywords
charging
control module
central control
charging pile
current
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Pending
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CN202210262678.1A
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Chinese (zh)
Inventor
胡俊
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Shenzhen Dimusheng Energy Technology Co ltd
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Shenzhen Dimusheng Energy Technology Co ltd
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Priority to CN202210262678.1A priority Critical patent/CN114362331A/en
Publication of CN114362331A publication Critical patent/CN114362331A/en
Priority to CN202210634955.7A priority patent/CN115208004A/en
Pending legal-status Critical Current

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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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
    • 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
    • B60L53/65—Monitoring or controlling charging stations involving identification of vehicles or their battery types
    • 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
    • B60L53/665—Methods related to measuring, billing or payment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with provisions for charging different types of batteries
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00304—Overcurrent protection
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00309—Overheat or overtemperature protection
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/547—Voltage
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/549—Current
    • 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
    • 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
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Abstract

The invention relates to the technical field of charging pile protection, in particular to a charging pile OCP protection system, which comprises: the charging system comprises a charging pile, a vehicle to be charged, a detection module and a central control module, wherein the vehicle to be charged is connected with the charging pile, the detection module is connected with a corresponding part on the charging pile, and the central control module is used for analyzing the charging operation condition and carrying out safety analysis on the charging pile according to the working parameters of the charging pile and the charging completion condition of the vehicle to be charged, which are measured by the detection module. According to the invention, the operating parameters of the charging process are detected safely, and the working parameters of the charging pile are adjusted when the safety is low, so that the use efficiency of the charging pile is improved in a mode of changing the transmission speed, and the problem of interference on normal charging caused by maintenance is avoided.

Description

Charging pile OCP protection system
Technical Field
The invention relates to the technical field of charging pile protection, in particular to a charging pile OCP protection system.
Background
The charging pile has the function similar to an oiling machine in a gas station, can be fixed on the ground or on the wall, is installed in public buildings (public buildings, markets, public parking lots and the like) and residential district parking lots or charging stations, and can charge various types of electric vehicles according to different voltage grades. The input end of the charging pile is directly connected with an alternating current power grid, and the output end of the charging pile is provided with a charging plug for charging the electric automobile.
Chinese patent publication No. CN109738741A discloses a charging pile monitoring system based on the Internet of things, which comprises a central processing unit module, wherein the central processing unit module is electrically connected with a sensing module in a bidirectional mode, the sensing module comprises a data acquisition module, a current sensor, a voltage sensor, a displacement sensor, an infrared sensor and a GPS module, the central processing unit module is electrically connected with a statistical analysis module, the central processing unit module is electrically connected with an alarm module, the alarm module is in signal connection with a mobile terminal, the central processing unit module is in bidirectional signal connection with a cloud server, and the cloud server is in bidirectional signal connection with the mobile terminal.
Therefore, the charging pile monitoring system based on the Internet of things has the following problems: although the safety detection is carried out on the operating parameters of the charging process, the charging process is only cut off when the safety is low, the normal charging process is interfered, the service efficiency of the charging pile is reduced, the operating parameters of the charging pile cannot be adjusted according to the specificity of different vehicles, and the application universality and the safety of the charging pile are reduced.
Disclosure of Invention
Therefore, the invention provides an OCP protection system for a charging pile, which is used for overcoming the problems of low application universality and low safety of the charging pile caused by the fact that the charging process is cut off only when the safety is low and the working parameters of the charging pile cannot be adjusted according to the specificity of different vehicles in the prior art.
In order to achieve the above object, the present invention provides a charging pile OCP protection system, including:
a charging pile for transmitting electricity to a vehicle to be charged; the charging pile is internally provided with a transformer for adjusting the charging voltage output by the charging pile in the charging process and a data transmitter for uploading the transformation data of the transformer and the data measured by the detection module to the central control module;
the detection module is connected with a corresponding part on the charging pile and is used for detecting working parameters of the charging pile and charging completion conditions of the vehicle to be charged in the charging process; the detection module is internally provided with a current sensor which is arranged between the charging pile and a vehicle to be charged and is used for detecting the charging current in the charging process;
the central control module is respectively connected with corresponding parts in the charging pile and the detection module and is used for analyzing the charging operation condition and carrying out safety analysis on the charging pile according to the working parameters of the charging pile and the charging completion condition of the vehicle to be charged, which are measured by the detection module; the central control module compares the detection result of the charging current in the charging process by the control detection module with the limit currents of different vehicles, analyzes and judges whether the charging pile normally operates and preliminarily adjusts the charging voltage of the charging pile when the charging pile abnormally operates; and the central control module detects and analyzes the charging current in the charging process again after the charging pile is adjusted, and further adjusts the corresponding parameters of the corresponding parts in the charging pile according to the analysis result.
Further, a preset initial charging voltage V0 is arranged in the central control module, the central control module sets the initial charging voltage to be V0 when the charging is started and determines the limit current I0 of the vehicle according to the model of the vehicle to be charged, the central control module controls the current sensor to detect the actual charging current I in the charging process, compares the I with the I0 and judges whether the charging current in the charging process meets the standard or not according to the comparison result;
if I = I0, the central control module determines that the charging current of the charging pile meets the standard;
if I is larger than I0, the central control module judges that the charging current of the charging pile does not meet the standard, judges that the charging current is too high, and re-determines the limit current of the vehicle to be charged according to the charging current difference delta I;
if I is less than I0, the central control module judges that the charging current of the charging pile does not meet the standard, judges that the charging current is too low, and judges whether the charging voltage in the charging process meets the standard according to the residual electric quantity B of the vehicle to be charged.
Further, a first preset current difference value delta I1 and a second preset current difference value delta I2 are arranged in the central control module, wherein delta I1 is smaller than delta I2, the central control module calculates the current difference value delta I between the actual charging current and the limit current of the vehicle when judging that the charging current is overhigh, delta I = I-I0 is set, and the central control module compares the delta I with delta I1 and delta I2 respectively and judges the reason causing the overhigh charging current according to the comparison result;
if the delta I is less than or equal to the delta I1, the central control module judges that the actual limit current has deviation from the limit current marked in the model and determines the limit current again by adjusting the voltage;
if the voltage value of the charging pile is more than delta I1 and less than or equal to delta I2, the central control module judges that the charging voltage of the charging pile is too high and reduces the charging voltage to 90% of the original voltage value;
if delta I is more than delta I2, the central control module judges that the charging pile and the vehicle to be charged are over-charged and controls a power supply to trip to stop charging and give an alarm.
Further, when the central control module controls the power supply to trip, the central control module reduces the initial charging voltage V0 of the charging pile to 80% of the original voltage, recharges the vehicle to be charged and sends a low-sound alarm to send a signal that low-power charging is performed.
Further, a first preset residual electric quantity B1, a second preset residual electric quantity B2, a first preset voltage regulation coefficient alpha 1 and a second preset voltage regulation coefficient alpha 2 are arranged in the central control module, wherein B1 is smaller than B2, and alpha 1 is smaller than alpha 2, the central control module detects the residual electric quantity B of the vehicle to be charged when the charging current is determined to be too low and compares B with B1 and B2 respectively, and the central control module determines the reason causing the charging current to be too low according to the comparison result and improves the charging current by regulating the charging voltage;
if B is less than or equal to B1, the central control module judges that the charging voltage of the charging pile is too low and increases the charging voltage by using alpha 1;
if B is more than B1 and less than or equal to B2, the central control module judges that the charging voltage of the charging pile is too low and increases the charging voltage by using alpha 2;
if B is larger than B2, the central control module determines that the charging pile is in a trickle charging state and determines that the charging voltage of the charging pile does not need to be adjusted;
when the charging voltage of the charging pile is adjusted by using the α i, the central control module sets i =1, 2, the adjusted voltage is recorded as V ', and sets V ' = V ' × α i, wherein V is the initial charging voltage of the charging pile before adjustment.
Further, the central control module controls the current sensor to detect the charging current I ' again when the charging voltage is adjusted to V ', compares I ' with I0 and judges whether the adjusted charging current meets the standard or not according to the comparison result;
if I' = I0, the central control module determines that the charging current adjusted by the charging pile meets the standard;
if I ' > I0, the central control module judges that the charging current regulated by the charging pile still does not meet the standard, recalculates delta I ', sets delta I ' = I ' -I0, compares the delta I ' with the delta I1 and the delta I2 respectively, and judges whether to regulate voltage or control power supply to trip according to the comparison result;
if I 'is less than I0, the central control module judges that the charging current regulated by the charging pile does not meet the standard and judges whether the charging voltage in the charging process meets the standard according to the residual electric quantity B' of the vehicle to be charged.
Furthermore, a critical charging voltage Vmax is set in the central control module, and the central control module compares the charging voltage of the charging pile with Vmax when adjusting the charging voltage and determining that the charging voltage needs to be adjusted to V', and calibrates the adjusted charging voltage value according to the comparison result;
if the V' is larger than or equal to Vmax, the central control module adjusts the charging voltage of the charging pile to Vmax and periodically detects the temperature of a battery in the vehicle;
and if V '< Vmax, the central control module adjusts the charging voltage of the charging pile to V'.
Further, a preset critical temperature T0 is set in the central control module, the central control module detects a charging pile temperature T1 and the vehicle battery temperature T2 to be charged under the condition that the charging voltage of the charging pile is Vmax, compares the T1, the T2 and the T0 respectively, and judges whether the current battery temperature meets the standard or not according to the comparison result;
if T1 is not less than T0 and T2 is not less than T0, the central control module determines that the current battery temperatures of the charging pile and the vehicle to be charged meet the standard;
if T1 is greater than T0 or T2 is greater than T0, the central control module determines that the current battery temperatures of the charging pile and the vehicle to be charged do not meet the standard and stops charging, and the central control module reduces the charging voltage to 90% of the original voltage value and redetects the charging current in the reduction process to determine whether the charging current in the charging process meets the standard or not.
Furthermore, a preset electric quantity increase difference delta B0 is arranged in the central control module, the central control module calculates the electric quantity increase delta B in unit time, compares the delta B with the delta B0 and judges the running state of the vehicle to be charged according to the comparison result;
if the delta B is not less than or equal to the delta B0, the central control module judges that the vehicle to be charged is in a closed state;
if delta B is less than delta B0, the central control module judges that the vehicle to be charged is in a starting state and gives an alarm to prompt personnel to close the vehicle, and the central control module controls the charging pile to stop charging when the vehicle is alarmed and no personnel close the vehicle within a preset time period.
Further, the stake of charging includes: the display is used for displaying the running condition in the charging process; the data processing device is arranged on one side above the display, is used as a storage medium of data parameters in the charging process, and comprises a data transmitter and a transformer; the card reader is arranged on one side below the display and used for reading a card to charge; the charging interface is arranged on one side below the card reader and used for connecting the charging pile with a vehicle with charging function; the base, it sets up the below one side of interface charges, be used for with it fixes subaerial to fill electric pile.
Compared with the prior art, the charging pile has the advantages that the operating parameters of the charging process are detected safely, the working parameters of the charging pile are adjusted when the safety is low, the use efficiency of the charging pile is improved in a mode of changing the transmission speed, the problem of interference on normal charging caused by maintenance is avoided, the actual working parameters of the charging pile are adjusted according to the specificity of different vehicles, the application universality of the charging pile and the safety of the charging process are guaranteed, and the service life of the charging pile is prolonged.
Furthermore, the current sensor is arranged to monitor the actual current in the charging process and combine and analyze the actual current with the limit current of the vehicle to be charged, and the limit current of the vehicle is determined according to the models of different vehicles, so that the actual working parameters of the charging pile are adjusted according to the specificity of different vehicles, the application universality of the charging pile and the safety of the charging process are ensured, and the service life of the charging pile is prolonged.
Furthermore, the charging pile is maintained according to different conditions of the difference value between the actual current and the limiting current, the condition of limiting current error caused by inaccurate vehicle models is considered, the limiting current of vehicles of different models is continuously determined and self-learned, and the intelligence of the system is improved, so that the application universality and the safety of the charging process of the charging pile are ensured, and the service life of the charging pile is prolonged.
Furthermore, the invention automatically tries to reestablish the charging and discharging relationship after the power-off processing under the dangerous condition, reduces the charging power in the restarting process, is used for charging the vehicle on the premise of ensuring the safety, reduces the maintenance time of the charging pile and improves the use efficiency of the charging pile on the whole.
Furthermore, the residual electric quantity of the vehicle to be charged is considered by the identification device, the intercommunication between the vehicle and the charging pile is realized, and the condition of misjudgment caused by trickle charging is avoided, so that the application universality and the charging process safety of the charging pile are ensured, and the service life of the charging pile is prolonged.
Furthermore, the charging current in the charging process is detected and analyzed again after the charging voltage is adjusted, and corresponding parameters of corresponding parts in the charging pile are further adjusted according to the analysis result in different situations, so that the accuracy of maintenance of the charging pile is improved, the application universality of the charging pile and the safety of the charging process are ensured, and the service life of the charging pile is further prolonged.
Furthermore, the safety value critical charging voltage of the charging voltage is set to ensure that the regulating process does not exceed the critical charging voltage, so that the application universality and the safety of the charging process of the charging pile are ensured, and the service life of the charging pile is further prolonged.
Furthermore, the charging method and the charging system provided by the invention have the advantages that the condition that the temperature of the battery rises in the charging process is considered, and the safety problem caused by battery explosion due to overhigh temperature is avoided, so that the application universality of the charging pile and the safety of the charging process are ensured, and the service life of the charging pile is further prolonged.
Furthermore, the charging is stopped when the vehicle is started in consideration of the condition that the vehicle is not stopped from charging, so that the safety problem caused by charging and discharging the charging pile is avoided, the application universality of the charging pile and the safety of the charging process are ensured, and the service life of the charging pile is further prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a charging pile OCP protection system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a data processing apparatus according to an embodiment of the present invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, which is a schematic structural diagram of a charging pile OCP protection system according to an embodiment of the present invention, the present invention provides a charging pile OCP protection system, including:
the charging pile 1 is used for transmitting the electricity of a national power grid to a vehicle to be charged and comprises a display 2, a data processing device 3, a card reader 4, a charging interface 5 and a base 6;
the vehicle to be charged is connected with the charging pile 1 and used for receiving the electricity transmitted by the charging pile 1;
the detection module is connected with a corresponding part on the charging pile 1 and is used for detecting working parameters of the charging pile 1 and charging completion conditions of a vehicle to be charged in the charging process;
the central control module is respectively connected with corresponding parts in the charging pile 1 and the detection module and is used for analyzing the charging operation condition and carrying out safety analysis on the charging pile 1 according to the working parameters of the charging pile 1 and the charging completion condition of the vehicle to be charged, which are measured by the detection module; the central control module compares the detection result of the charging current in the charging process by the control detection module with the limit currents of different vehicles, analyzes and judges whether the charging pile 1 normally operates or not, and primarily adjusts the charging voltage of the charging pile 1 when the charging pile 1 abnormally operates; and the central control module detects and analyzes the charging current in the charging process again after the charging pile 1 is adjusted, and further adjusts the corresponding parameters of the corresponding parts in the charging pile 1 according to the analysis result.
Specifically, the charging pile 1 includes: the display 2 is used for displaying the running condition in the charging process; the data processing device 3 is arranged on one side above the display 2 and used as a storage medium of data parameters in the charging process, and comprises a data transmitter 31 and a transformer 32; a card reader 4 disposed at a lower side of the display 2 to read a card for billing; the charging interface 5 is arranged on one side below the card reader 4 and used for connecting the charging pile 1 with a vehicle with charging function; and the base 6 is arranged on one side of the lower part of the charging interface 5 and used for fixing the charging pile 1 on the ground.
Specifically, referring to fig. 2, which is a schematic structural diagram of a data processing apparatus according to an embodiment of the present invention, the data processing apparatus 3 includes: the data transmitter 31 is used for uploading the transformation data of the transformer and the data measured by the detection module to the central control module; and the transformer 32 is arranged on one side of the data transmitter 31 and used for adjusting the charging voltage output by the charging pile 1 in the charging process.
Specifically, the detection module includes: the current sensor 7 is arranged on one side of the transformer 32, is positioned between the charging pile 1 and a vehicle to be charged, and is used for detecting charging current in the charging process; and the identification device is arranged between the charging pile 1 and the vehicle to be charged and is used for identifying the vehicle information of the vehicle to be charged, and the identified information comprises the model of the vehicle to be charged, the limiting current of the vehicle and the residual capacity of the vehicle to be charged. Those skilled in the art can understand that the setting position of the corresponding component in the detection module of this embodiment is set according to the structure and shape of the actual charging pile OCP protection system, and only the corresponding parameter needs to be obtained, and as to which type of sensor is used, the setting position can also be determined according to the actual use environment and the specific transmission efficiency.
Specifically, the safety detection is carried out on the operation parameters in the charging process, and the working parameters of the charging pile 1 are adjusted when the safety is low, so that the use efficiency of the charging pile 1 is improved in a mode of changing the transmission speed, and the problem of interference with normal charging caused by maintenance is avoided.
Specifically, a preset initial charging voltage V0 is set in the central control module, the central control module sets the initial charging voltage to V0 when starting charging and controls the identification device to detect the model of the vehicle to be charged and the limit current I0 of the vehicle, the central control module controls the current sensor 7 to detect the actual charging current I in the charging process, compares I with I0 and judges whether the charging current in the charging process meets the standard according to the comparison result;
if I = I0, the central control module determines that the charging current of the charging pile 1 meets the standard;
if I is larger than I0, the central control module judges that the charging current of the charging pile 1 does not meet the standard, judges that the charging current is too high, and re-determines the limit current of the vehicle to be charged according to the charging current difference delta I;
if I is less than I0, the central control module judges that the charging current of the charging pile 1 does not meet the standard, judges that the charging current is too low, and judges whether the charging voltage in the charging process meets the standard according to the residual electric quantity B of the vehicle to be charged.
Specifically, the actual current in the charging process is monitored by the current sensor 7 and is combined with the limit current of the vehicle to be charged for analysis, and the limit current of the vehicle is determined according to the models of different vehicles, so that the actual working parameters of the charging pile 1 are adjusted according to the specificities of different vehicles, the application universality of the charging pile 1 and the safety of the charging process are ensured, and the service life of the charging pile 1 is prolonged.
Specifically, a first preset current difference value delta I1 and a second preset current difference value delta I2 are arranged in the central control module, wherein delta I1 is smaller than delta I2, the central control module calculates the current difference value delta I between the actual charging current and the limiting current of the vehicle when the charging current is judged to be overhigh, delta I = I-I0 is set, and the central control module compares the delta I with delta I1 and delta I2 respectively and judges the reason causing the overhigh charging current according to the comparison result;
if the delta I is less than or equal to the delta I1, the central control module judges that the actual limit current has deviation from the limit current marked in the model and determines the limit current again by adjusting the voltage;
if the voltage value of the charging pile 1 is less than delta I1 and less than or equal to delta I2, the central control module judges that the charging voltage of the charging pile 1 is too high and reduces the charging voltage to 90% of the original voltage value;
if delta I is more than delta I2, the central control module judges that the charging pile 1 and the vehicle to be charged are over-charged and controls a power supply to trip to stop charging and give an alarm.
Specifically, the charging pile 1 is maintained according to different conditions of the difference value between the actual current and the limiting current, the condition of limiting current error caused by inaccurate vehicle models is considered, the limiting current of vehicles of different models is continuously determined and learned by self, and the intelligence of the system is improved, so that the application universality and the charging process safety of the charging pile 1 are ensured, and the service life of the charging pile 1 is prolonged.
Specifically, when the central control module controls the power supply to trip, the central control module reduces the initial charging voltage V0 of the charging pile 1 to 80%, recharges the vehicle to be charged and sends a low-sound alarm to send a signal that low-power charging is being performed.
Specifically, the charging and discharging relation is automatically tried to be reestablished after the power failure processing under the dangerous condition, the charging power is reduced in the restarting process, the vehicle is still charged on the premise of ensuring the safety, the maintenance time of the charging pile 1 is reduced, and the use efficiency of the charging pile 1 is improved on the whole.
Specifically, a first preset residual electric quantity B1, a second preset residual electric quantity B2, a first preset voltage regulation coefficient alpha 1 and a second preset voltage regulation coefficient alpha 2 are arranged in the central control module, wherein B1 is smaller than B2, and alpha 1 is smaller than alpha 2, the central control module controls the identification device to detect the residual electric quantity B of the vehicle to be charged and compares B with B1 and B2 respectively when the charging current is determined to be too low, and the central control module determines the reason causing the charging current to be too low according to the comparison result and improves the charging current by regulating the charging voltage;
if B is less than or equal to B1, the central control module judges that the charging voltage of the charging pile 1 is too low and increases the charging voltage by using alpha 1;
if B is more than B1 and less than or equal to B2, the central control module judges that the charging voltage of the charging pile 1 is too low and increases the charging voltage by using alpha 2;
if B is greater than B2, the central control module determines that the charging pile 1 is in a trickle charging state and determines that the charging voltage of the charging pile 1 does not need to be adjusted;
when the central control module adjusts the charging voltage of the charging pile 1 by using α i, i =1, 2 is set, the adjusted voltage is denoted as V ', and V ' = V ' × α i is set, where V is the initial charging voltage of the charging pile 1 before adjustment.
Specifically, the residual electric quantity of the vehicle to be charged is considered through the identification device, the intercommunication between the vehicle and the charging pile 1 is realized, and the condition of misjudgment caused by trickle charging is avoided, so that the application universality of the charging pile 1 and the safety of the charging process are ensured, and the service life of the charging pile 1 is prolonged.
Specifically, the central control module controls the current sensor 7 to detect the charging current I ' again when the charging voltage is adjusted to V ', compares I ' with I0 and judges whether the adjusted charging current meets the standard or not according to the comparison result;
if I' = I0, the central control module determines that the charging current adjusted by the charging pile 1 meets the standard;
if I ' > I0, the central control module judges that the charging current regulated by the charging pile 1 does not meet the standard yet, recalculates delta I ', sets delta I ' = I ' -I0, compares the delta I ' with the delta I1 and the delta I2 respectively, and judges whether to regulate voltage or control power supply to trip according to the comparison result;
if I 'is less than I0, the central control module judges that the charging current regulated by the charging pile 1 does not meet the standard and judges whether the charging voltage in the charging process meets the standard according to the residual electric quantity B' of the vehicle to be charged.
Specifically, the charging current in the charging process is detected and analyzed again after the charging voltage is adjusted, and corresponding parameters of corresponding parts in the charging pile 1 are further adjusted according to analysis results in different situations, so that the maintenance accuracy of the charging pile 1 is improved, the application universality of the charging pile 1 and the safety of the charging process are ensured, and the service life of the charging pile 1 is further prolonged.
Specifically, a critical charging voltage Vmax is set in the central control module, and the central control module compares V 'with Vmax when adjusting the charging voltage of the charging pile 1 and determining that the charging voltage needs to be adjusted to V', and calibrates the adjusted charging voltage value according to the comparison result;
if the V' is more than or equal to Vmax, the central control module adjusts the charging voltage of the charging pile 1 to Vmax and periodically detects the temperature of a battery in the vehicle;
if V '< Vmax, the central control module adjusts the charging voltage of the charging pile 1 to V';
the invention is provided with the safety value critical charging voltage of the charging voltage to ensure that the regulating process does not exceed the critical charging voltage, thereby ensuring the application universality of the charging pile 1 and the safety of the charging process and further prolonging the service life of the charging pile 1.
Specifically, a preset critical temperature T0 is set in the central control module, and the central control module detects the temperature T1 of the charging pile 1 and the temperature T2 of the vehicle battery to be charged under the condition that the charging voltage of the charging pile 1 is Vmax, compares the temperature T1, the temperature T2 and the temperature T0 respectively, and determines whether the current battery temperature meets the standard according to the comparison result;
if T1 is not less than T0 and T2 is not less than T0, the central control module determines that the current battery temperatures of the charging pile 1 and the vehicle to be charged meet the standard;
if T1 is greater than T0 or T2 is greater than T0, the central control module determines that the current battery temperatures of the charging pile 1 and the vehicle to be charged do not meet the standard and stops charging, and the central control module reduces the charging voltage to 90% of the original voltage value and redetects the charging current in the reduction process to determine whether the charging current in the charging process meets the standard or not.
Specifically, the charging method and the charging system provided by the invention have the advantages that the condition that the temperature of the battery rises in the charging process is considered, and the safety problem caused by battery explosion due to overhigh temperature is avoided, so that the application universality of the charging pile 1 and the safety of the charging process are ensured, and the service life of the charging pile 1 is further prolonged.
Specifically, a preset electric quantity increase difference delta B0 is arranged in the central control module, the central control module calculates the electric quantity increase delta B in unit time, compares the delta B with the delta B0, and judges the running state of the vehicle to be charged according to the comparison result;
if the delta B is not less than or equal to the delta B0, the central control module judges that the vehicle to be charged is in a closed state;
if delta B is less than delta B0, the central control module judges that the vehicle to be charged is in a starting state and gives an alarm to prompt a person to close the vehicle, and the central control module controls the charging pile 1 to stop charging when the vehicle is alarmed and no person closes the vehicle within a preset time period.
Specifically, the charging is stopped when the vehicle is started under the condition that the vehicle is not stopped, so that the safety problem caused by the fact that the charging pile 1 is placed while being charged is avoided, the application universality of the charging pile 1 and the safety of the charging process are ensured, and the service life of the charging pile 1 is further prolonged.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (10)

1. The utility model provides a fill electric pile OCP protection system which characterized in that includes:
the charging pile is used for transmitting electric energy to a vehicle to be charged; the charging pile is internally provided with a transformer for adjusting the charging voltage output by the charging pile in the charging process and a data transmitter for uploading the transformation data of the transformer and the data measured by the detection module to the central control module;
the detection module is connected with a corresponding part on the charging pile and is used for detecting working parameters of the charging pile and charging completion conditions of the vehicle to be charged in the charging process; the detection module is internally provided with a current sensor which is arranged between the charging pile and a vehicle to be charged and is used for detecting the charging current in the charging process;
the central control module is respectively connected with corresponding parts in the charging pile and the detection module and is used for analyzing the charging operation condition and carrying out safety analysis on the charging pile according to the working parameters of the charging pile and the charging completion condition of the vehicle to be charged, which are measured by the detection module; the central control module compares the detection result of the charging current in the charging process by the control detection module with the limit currents of different vehicles for analysis so as to judge whether the charging pile normally operates and preliminarily adjust the charging voltage of the charging pile when the charging pile abnormally operates; and the central control module detects and analyzes the charging current in the charging process again after the charging pile is adjusted, and further adjusts the corresponding parameters of the corresponding parts in the charging pile according to the analysis result.
2. The charging pile OCP protection system according to claim 1, wherein a preset initial charging voltage V0 is set in the central control module, the central control module sets the initial charging voltage to V0 when starting charging and determines a limit current I0 of the vehicle to be charged according to the model of the vehicle, and the central control module controls the current sensor to detect an actual charging current I in the charging process and determines whether the charging current in the charging process meets a standard according to a comparison result of the I and the I0;
if I = I0, the central control module determines that the charging current of the charging pile meets the standard;
if I is larger than I0, the central control module judges that the charging current of the charging pile does not meet the standard, judges that the charging current is too high and calculates the difference value delta I of the charging current;
and if I is less than I0, the central control module judges that the charging current of the charging pile does not meet the standard, judges that the charging current is too low and detects the residual electric quantity B of the vehicle to be charged.
3. The charging pile OCP protection system according to claim 2, wherein a first preset current difference Δ I1 and a second preset current difference Δ I2 are arranged in the central control module, wherein Δ I1 is smaller than Δ I2, the central control module calculates a current difference Δ I between an actual charging current and a limiting current of the vehicle when the charging current is judged to be overhigh, and sets Δ I = I-I0 according to the reason that the charging current is overhigh judged by the Δ I;
if the delta I is less than or equal to the delta I1, the central control module judges that the actual limit current has deviation from the limit current marked in the model and determines the limit current again by adjusting the voltage;
if the voltage value of the charging pile is more than delta I1 and less than or equal to delta I2, the central control module judges that the charging voltage of the charging pile is too high and reduces the charging voltage to 90% of the original voltage value;
if delta I is more than delta I2, the central control module judges that the charging pile and the vehicle to be charged are over-current charged and controls a power supply to trip to stop charging.
4. The charging post OCP protection system of claim 3, wherein when the central control module controls the power supply to trip, the central control module reduces the initial charging voltage V0 of the charging post to 80%, recharges the vehicle to be charged and issues a low-sound alarm to signal that low-power charging is in progress.
5. The charging pile OCP protection system of claim 3, wherein the central control module is provided with a first preset remaining power B1, a second preset remaining power B2, a first preset voltage regulation coefficient α 1 and a second preset voltage regulation coefficient α 2, wherein B1 is less than B2, α 1 is less than α 2, the central control module detects the remaining power B of the vehicle to be charged when the charging current is determined to be too low, determines a reason for too low charging current according to the comparison results of B with B1 and B2 respectively, and increases the charging current by regulating the charging voltage;
if B is less than or equal to B1, the central control module judges that the charging voltage of the charging pile is too low and increases the charging voltage by using alpha 1;
if B is more than B1 and less than or equal to B2, the central control module judges that the charging voltage of the charging pile is too low and increases the charging voltage by using alpha 2;
if B is larger than B2, the central control module determines that the charging pile is in a trickle charging state and determines that the charging voltage of the charging pile does not need to be adjusted;
when the charging voltage of the charging pile is adjusted by using the α i, the central control module sets i =1, 2, the adjusted voltage is recorded as V ', and sets V ' = V ' × α i, wherein V is the initial charging voltage of the charging pile before adjustment.
6. The charging pile OCP protection system of claim 5, wherein the central control module controls the current sensor to detect the charging current I ' again when the charging voltage is adjusted to V ' and determines whether the adjusted charging current meets the standard according to the comparison result of I ' and I0;
if I' = I0, the central control module determines that the charging current adjusted by the charging pile meets the standard;
if I ' > I0, the central control module judges that the charging current regulated by the charging pile still does not meet the standard, recalculates delta I ', sets delta I ' = I ' -I0, compares the delta I ' with the delta I1 and the delta I2 respectively, and judges whether to regulate voltage or control power supply to trip according to the comparison result;
if I 'is less than I0, the central control module judges that the charging current regulated by the charging pile does not meet the standard and judges whether the charging voltage in the charging process meets the standard according to the residual electric quantity B' of the vehicle to be charged.
7. The charging pile OCP protection system according to claim 6, wherein a critical charging voltage Vmax is set in the central control module, and when the charging voltage of the charging pile is adjusted and it is determined that the charging voltage needs to be adjusted to V ', the central control module calibrates the adjusted charging voltage value according to a comparison result between V' and Vmax;
if the V' is larger than or equal to Vmax, the central control module adjusts the charging voltage of the charging pile to Vmax and periodically detects the temperature of a battery in the vehicle;
and if V '< Vmax, the central control module adjusts the charging voltage of the charging pile to V'.
8. The charging pile OCP protection system of claim 7, wherein a preset critical temperature T0 is set in the central control module, and the central control module detects a charging pile temperature T1 and a vehicle battery temperature T2 to be charged under the condition that the charging voltage of the charging pile is Vmax and determines whether the current battery temperature meets the standard according to the comparison results of T1 and T2 and T0 respectively;
if T1 is not less than T0 and T2 is not less than T0, the central control module determines that the current battery temperatures of the charging pile and the vehicle to be charged meet the standard;
if T1 is greater than T0 or T2 is greater than T0, the central control module determines that the current battery temperatures of the charging pile and the vehicle to be charged do not meet the standard and stops charging, and the central control module reduces the charging voltage to 90% of the original voltage value and redetects the charging current in the reduction process to determine whether the charging current in the charging process meets the standard or not.
9. The charging pile OCP protection system according to claim 5, wherein a preset electric quantity increment difference Delta B0 is arranged in the central control module, the central control module calculates the electric quantity increment Delta B in unit time and judges the running state of the vehicle to be charged according to the comparison result between the Delta B and the Delta B0;
if the delta B is not less than or equal to the delta B0, the central control module judges that the vehicle to be charged is in a closed state;
if delta B is less than delta B0, the central control module judges that the vehicle to be charged is in a starting state and gives an alarm to prompt personnel to close the vehicle, and the central control module controls the charging pile to stop charging when the vehicle is alarmed and no personnel close the vehicle within a preset time period.
10. The charging post OCP protection system of claim 1, wherein the charging post comprises: the display is used for displaying the running condition in the charging process; the data processing device is arranged on one side above the display, is used as a storage medium of data parameters in the charging process, and comprises a data transmitter and a transformer; the card reader is arranged on one side below the display and used for reading a card to charge; the charging interface is arranged on one side below the card reader and used for connecting the charging pile with a vehicle with charging function; the base, it sets up the below one side of interface charges, be used for with it fixes subaerial to fill electric pile.
CN202210262678.1A 2022-03-17 2022-03-17 Charging pile OCP protection system Pending CN114362331A (en)

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