CN115230537A - Charging method and device of charging pile - Google Patents
Charging method and device of charging pile Download PDFInfo
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- CN115230537A CN115230537A CN202110439918.6A CN202110439918A CN115230537A CN 115230537 A CN115230537 A CN 115230537A CN 202110439918 A CN202110439918 A CN 202110439918A CN 115230537 A CN115230537 A CN 115230537A
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- 238000000034 method Methods 0.000 title claims abstract description 66
- 238000001816 cooling Methods 0.000 claims abstract description 324
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- 230000001960 triggered effect Effects 0.000 claims description 2
- 238000005485 electric heating Methods 0.000 abstract description 10
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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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
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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
- B60L53/10—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 characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
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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
- B60L53/30—Constructional details of charging stations
- B60L53/302—Cooling of charging equipment
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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
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
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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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
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- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
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- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
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- H01M10/6567—Liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6571—Resistive heaters
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a charging method and a charging device of a charging pile. Fill electric pile and include power conversion module, super fill the controller, charge rifle, cooling module, hot-water heating heater and liquid cooling rifle, super fill the controller respectively with power conversion module, hot-water heating heater, cooling module, charge rifle and liquid cooling rifle and be connected, power conversion module with charge the rifle and be connected, cooling module and liquid cooling rifle are connected. According to the charging method, the battery of the vehicle to be charged can be cooled in a mode of arranging the cooling module in the charging pile, the vehicle space and the whole vehicle weight are not occupied, the vehicle cost is reduced, the vehicle can be rapidly charged at high power, and in the embodiment of the invention, when the temperature of the battery is not higher than the preset battery temperature threshold value, the battery of the vehicle to be charged is directly heated by the water heating heater in an electric heating mode, and compared with a heat conduction mode, the heating speed is high, so that the purpose of rapid charging can be achieved.
Description
Technical Field
The invention relates to the technical field of charging piles, in particular to a charging method and device of a charging pile.
Background
With the rapid development of electric vehicles, users have higher and higher requirements for charging time, and therefore, in order to further rapidly popularize electric vehicles, the problem of long charging time of electric vehicles needs to be solved. The high-power quick charging and super quick charging functions through the charging pile become development trends in the future.
Under the condition of carrying out high-power quick charge through filling electric pile, prior art has following problem:
(1) When high-power quick charging is carried out, various electrochemical reactions and physical changes occur in the battery of the electric automobile, the heat generating power of a battery system is overlarge, so that a large amount of heat is generated, if the heat cannot be well dissipated, the temperature of the battery is increased to be out of a normal working temperature range, so that short-time high-power charging cannot be carried out, and a heat management system of the electric automobile cannot support super-large current charging due to the influence of the layout, cost, weight and component resources of the automobile body, so that the super-large refrigerating capacity is required to be designed for meeting the short-time high-power charging requirement of the existing electric automobile, the space of the automobile and the weight of the whole automobile need to be occupied, and the cost is higher;
(2) Due to reasons such as battery technology, chemical reactions inside batteries of electric vehicles are inhibited under low temperature conditions, and high-power charging cannot be performed, fig. 1 is a schematic diagram of heating the batteries by an external heating conduction mode through a vehicle-mounted thermal management system in the prior art, 80 in fig. 1 is the batteries, and 90 is a heat conducting sheet, and referring to fig. 1, the batteries are heated by the vehicle-mounted thermal management system in the prior art in the external heating conduction mode, that is, external heat is conducted to the batteries 80 through the heat conducting sheet 90, and then charging current is gradually increased for charging.
Disclosure of Invention
The invention provides a charging method of a charging pile, which is used for reducing vehicle cost and improving charging speed under a low-temperature condition. The specific technical scheme is as follows.
In a first aspect, the invention provides a charging method of a charging pile, wherein the charging pile comprises a power conversion module, a super-charging controller, a charging gun, a cooling module, a water heating heater and a liquid cooling gun, wherein the super-charging controller is respectively connected with the power conversion module, the water heating heater, the cooling module, the charging gun and the liquid cooling gun, the power conversion module is connected with the charging gun, and the cooling module is connected with the liquid cooling gun;
the cooling module comprises a compressor, a condenser, a cooling fan, a radiator, a refrigerant pressure sensor, a plate heat exchanger, an electronic three-way valve, a water pump, a liquid supplementing kettle, a liquid level sensor, a water temperature sensor, a refrigerant pipeline and a cooling liquid pipeline;
the outlet of the compressor is connected with the inlet of the condenser, the air suction port of the compressor is connected with the refrigerant outlet of the plate heat exchanger, the outlet of the condenser is connected with the refrigerant inlet of the plate heat exchanger through a first outlet pipeline, the refrigerant pressure sensor is arranged in the first outlet pipeline, the outlet of the radiator is connected with the inlet of the liquid supplementing kettle, the inlet of the radiator is connected with the outlet of the electronic three-way valve, the water path inlet of the plate heat exchanger is connected with the second outlet of the electronic three-way valve, the water path outlet of the plate heat exchanger is connected with the inlet of the liquid supplementing kettle, the inlet of the water pump is connected with the liquid cooling gun, the outlet of the water pump is connected with the inlet of the electronic three-way valve, the liquid cooling gun is connected with the outlet of the liquid supplementing kettle through a second outlet pipeline, the water temperature sensor is arranged in the second water outlet pipeline, the liquid level sensor is arranged in the liquid supplementing kettle, and the cooling fan is arranged in parallel with the condenser;
the overcharge controller is respectively connected with the liquid level sensor, the compressor, the cooling fan, the refrigerant pressure sensor, the water temperature sensor, the water pump and the electronic three-way valve;
the method is applied to the overcharge controller, and comprises the following steps:
acquiring authentication information of a vehicle to be charged, and judging whether the vehicle to be charged has a super-charging function according to the authentication information, wherein the super-charging function is a function of charging by using current larger than preset power;
if the vehicle has the overcharge function, judging whether first handshake information sent by the vehicle to be charged is received;
if so, acquiring battery information of the vehicle to be charged, and judging whether the temperature of the battery is higher than a preset battery temperature threshold value or not according to the battery information;
if the voltage is not higher than the preset voltage, controlling the power conversion module to transmit the electric energy of the water heating heater to a battery of the vehicle to be charged through the charging gun for heating and charging;
if the charging position is higher than the preset charging position, obtaining cooling state information of the vehicle to be charged, and judging whether the vehicle to be charged supports external cooling of the charging pile according to the cooling state information;
if yes, obtaining the connection state information of the liquid cooling gun, and judging whether the liquid cooling gun is successfully connected with the vehicle to be charged according to the connection state information;
if the connection is successful, liquid cooling state detection information is obtained, and whether the cooling module works normally or not is judged according to the liquid cooling state detection information;
if the charging pile is normal, obtaining communication information between the vehicle to be charged and the charging pile, and judging whether the vehicle to be charged and the charging pile are in communication connection or not according to the communication information;
if the communication connection is established, the power conversion module is controlled to charge the battery of the vehicle to be charged through the charging gun, the ambient temperature around the vehicle to be charged is obtained, and whether the ambient temperature is smaller than a preset temperature threshold value or not is judged; if yes, controlling a first outlet of the electronic three-way valve to be communicated with an inlet of the radiator, controlling the water pump and the cooling fan to operate, cooling a battery of the vehicle to be charged through the liquid cooling gun, and controlling the water pump and the cooling fan to stop operating when charging is finished.
Optionally, after the step of controlling the power conversion module to transmit the electric energy of the water heater to the battery of the vehicle to be charged through the charging gun for heating and charging, the charging method of the charging pile further includes:
and when the temperature of the battery reaches the preset battery temperature threshold value, controlling the power conversion module to intermittently output a pulse signal to the battery of the vehicle to be charged through the charging gun to heat and charge the battery of the vehicle to be charged, wherein the frequency of the pulse signal is greater than the preset frequency.
Optionally, the charging pile further includes an energy storage device, and the energy storage device is connected to the power conversion module.
Optionally, the charging method of the charging pile further includes:
and collecting a resistance signal of the liquid level sensor, and outputting alarm information when the resistance signal is smaller than a preset resistance threshold value.
Optionally, after the step of determining whether the vehicle to be charged has the overcharge function according to the authentication information, the charging method for the charging pile further includes:
if the vehicle does not have the overcharge function, judging whether second handshake information sent by the vehicle to be charged is received;
if the charging pile is received, acquiring first state information of the charging pile, and judging whether the charging pile works normally or not according to the first state information of the charging pile;
and if the charging gun is normal, controlling the power conversion module to charge the battery of the vehicle to be charged through the charging gun.
Optionally, after the step of determining whether the vehicle to be charged supports external cooling of the charging pile according to the cooling state information, the charging method for the charging pile further includes:
when the vehicle to be charged does not support external cooling of the charging pile, acquiring second state information of the charging pile, and judging whether the charging pile works normally or not according to the second state information of the charging pile;
and if the charging gun is normal, controlling the power conversion module to charge the battery of the vehicle to be charged through the charging gun.
In a second aspect, the invention provides a charging device for a charging pile, wherein the charging pile comprises a power conversion module, a super-charging controller, a charging gun, a cooling module, a water heating heater and a liquid cooling gun, wherein the super-charging controller is respectively connected with the power conversion module, the water heating heater, the cooling module, the charging gun and the liquid cooling gun, the power conversion module is connected with the charging gun, and the cooling module is connected with the liquid cooling gun;
the cooling module comprises a compressor, a condenser, a cooling fan, a radiator, a refrigerant pressure sensor, a plate heat exchanger, an electronic three-way valve, a water pump, a liquid supplementing kettle, a liquid level sensor, a water temperature sensor, a refrigerant pipeline and a cooling liquid pipeline;
the outlet of the compressor is connected with the inlet of the condenser, the air suction port of the compressor is connected with the refrigerant outlet of the plate heat exchanger, the outlet of the condenser is connected with the refrigerant inlet of the plate heat exchanger through a first outlet pipeline, the refrigerant pressure sensor is arranged in the first outlet pipeline, the outlet of the radiator is connected with the inlet of the liquid supplementing pot, the inlet of the radiator is connected with the outlet of the electronic three-way valve, the waterway inlet of the plate heat exchanger is connected with the second outlet of the electronic three-way valve, the waterway outlet of the plate heat exchanger is connected with the inlet of the liquid supplementing pot, the inlet of the water pump is connected with the liquid cooling gun, the outlet of the water pump is connected with the inlet of the electronic three-way valve, the liquid cooling gun is connected with the outlet of the liquid supplementing pot through a second outlet pipeline, the water temperature sensor is arranged in the second water outlet pipeline, the liquid level sensor is arranged in the liquid supplementing pot, the cooling liquid is filled in the liquid supplementing pot, and the cooling fan is arranged in parallel with the condenser;
the super-charging controller is respectively connected with the liquid level sensor, the compressor, the cooling fan, the refrigerant pressure sensor, the water temperature sensor, the water pump and the electronic three-way valve;
the device is applied to the overcharge controller, and the device comprises:
the system comprises an authentication information acquisition module, a first judgment module and a second judgment module, wherein the authentication information acquisition module is used for acquiring authentication information of a vehicle to be charged, judging whether the vehicle to be charged has a super-charging function according to the authentication information, and if so, triggering the first judgment module, wherein the super-charging function is a function of charging by using current larger than preset power;
the first judging module is used for judging whether first handshake information sent by the vehicle to be charged is received or not, and if so, the battery information acquiring module is triggered;
the battery information acquisition module is used for acquiring battery information of the vehicle to be charged, judging whether the temperature of the battery is higher than a preset battery temperature threshold value or not according to the battery information, if so, triggering the cooling state information acquisition module, and if not, triggering the first control module;
the first control module is used for controlling the power conversion module to transmit the electric energy of the water heating heater to a battery of the vehicle to be charged through the charging gun for heating and charging;
the cooling state information acquisition module is used for acquiring cooling state information of the vehicle to be charged, judging whether the vehicle to be charged supports external cooling of the charging pile according to the cooling state information, and if so, triggering the connection state information acquisition module;
the connection state information acquisition module is used for acquiring the connection state information of the liquid cooling gun, judging whether the liquid cooling gun is successfully connected with the vehicle to be charged or not according to the connection state information, and if so, triggering the liquid cooling state detection information acquisition module;
the liquid cooling state detection information acquisition module is used for acquiring liquid cooling state detection information, judging whether the cooling module normally works according to the liquid cooling state detection information, and if so, triggering the communication information acquisition module;
the communication information acquisition module is used for acquiring communication information between the vehicle to be charged and the charging pile, judging whether the vehicle to be charged and the charging pile are in communication connection or not according to the communication information, and if so, triggering a second control module;
the second control module is used for controlling the power conversion module to charge a battery of the vehicle to be charged through the charging gun, acquiring the ambient temperature around the vehicle to be charged, and judging whether the ambient temperature is smaller than a preset temperature threshold value or not; if yes, controlling a first outlet of the electronic three-way valve to be communicated with an inlet of the radiator, controlling the water pump and the cooling fan to operate, cooling a battery of the vehicle to be charged through the liquid cooling gun, and controlling the water pump and the cooling fan to stop operating when charging is finished.
Optionally, the charging apparatus for charging a charging pile further includes a third control module, where the third control module is configured to control the power conversion module to transmit the electric energy of the water heater to the battery of the vehicle to be charged through the charging gun for heating and charging, and when the temperature of the battery reaches the preset battery temperature threshold, control the power conversion module to intermittently output a pulse signal to the battery of the vehicle to be charged through the charging gun for heating and charging the battery of the vehicle to be charged, where a frequency of the pulse signal is greater than a preset frequency.
Optionally, the charging pile further comprises an energy storage device, and the energy storage device is connected with the power conversion module.
Optionally, the charging device for the charging pile further comprises an acquisition module, wherein the acquisition module is used for acquiring the resistance signal of the liquid level sensor, and when the resistance signal is smaller than a preset resistance threshold value, alarm information is output.
Optionally, the charging device for charging pile further includes a second determining module, where the second determining module is specifically configured to:
after judging whether the vehicle to be charged has the overcharge function according to the authentication information, if the vehicle to be charged does not have the overcharge function, judging whether second handshake information sent by the vehicle to be charged is received;
if the charging pile is received, acquiring first state information of the charging pile, and judging whether the charging pile works normally or not according to the first state information of the charging pile;
and if the charging gun is normal, controlling the power conversion module to charge the battery of the vehicle to be charged through the charging gun.
Optionally, the charging device for the charging pile further includes a third determination module, where the third determination module is specifically configured to:
after judging whether the vehicle to be charged supports external cooling of the charging pile according to the cooling state information, when the vehicle to be charged does not support external cooling of the charging pile, acquiring second state information of the charging pile, and judging whether the charging pile normally works according to the second state information of the charging pile;
and if the charging gun is normal, controlling the power conversion module to charge the battery of the vehicle to be charged through the charging gun.
As can be seen from the above, the charging method of the charging pile provided by the embodiment of the present invention may obtain authentication information of a vehicle to be charged, determine whether the vehicle to be charged has a super-charging function according to the authentication information, wherein the super-charging function is a function of charging with a current greater than a preset power, if the super-charging function is provided, determine whether first handshake information sent by the vehicle to be charged is received, if the first handshake information is received, obtain battery information of the vehicle to be charged, determine whether a temperature of the battery is higher than a preset battery temperature threshold according to the battery information, if the temperature is not higher than the preset battery temperature threshold, control the power conversion module to transmit electric energy of the water heater to the battery of the vehicle to be charged through the charging gun for heating and charging, if the battery information is higher than the preset battery temperature threshold, obtain cooling state information of the vehicle to be charged, determine whether the vehicle to be charged supports external cooling of the charging pile according to the cooling state information, if the battery to be charged is supported, obtain connection state information of the liquid cooling gun, determine whether the liquid cooling gun and the vehicle to be charged are successfully connected, determine whether the charging gun and the charging environment is connected, if the charging gun is connected with the charging gun, determine whether the charging environment is connected, and the charging gun is connected according to be connected, and the temperature of the charging gun, determine whether the charging environment communication between the charging gun and the charging environment of the charging gun is smaller than the temperature of the vehicle to be charged vehicle to be connected; if the vehicle is charged, controlling a first outlet of the electronic three-way valve to be communicated with an inlet of the radiator, controlling the water pump and the cooling fan to operate, cooling the battery of the vehicle to be charged through the liquid cooling gun, and controlling the water pump and the cooling fan to stop operating when charging is finished. Therefore, in the embodiment of the invention, the battery of the vehicle to be charged can be cooled by arranging the cooling module in the charging pile, the vehicle space and the whole vehicle weight are not occupied, the vehicle cost is reduced, the vehicle can be rapidly charged at high power, and when the temperature of the battery is not higher than the preset battery temperature threshold value, the battery of the vehicle to be charged is directly heated by adopting the water heating heater in an electric heating mode. Of course, it is not necessary for any product or method to achieve all of the above-described advantages at the same time for practicing the invention.
The innovation points of the embodiment of the invention comprise:
1. in the embodiment of the invention, the battery of the vehicle to be charged can be cooled by arranging the cooling module in the charging pile, the vehicle space and the whole vehicle weight are not occupied, the vehicle cost is reduced, the vehicle can be rapidly charged with high power, and when the temperature of the battery is not higher than the preset battery temperature threshold value, the battery of the vehicle to be charged is directly heated by adopting the water heating heater in an electric heating mode.
2. According to the embodiment of the invention, the charging pile is arranged to comprise the cooling module, so that the vehicle is not required to be provided with a high-power battery liquid cooling system, the vehicle space and the whole vehicle weight are not required to be occupied, the whole vehicle cost can be reduced, and the problem of low utilization rate of the high-power battery liquid cooling system arranged on the vehicle is avoided.
3. The charging pile is arranged to comprise the cooling module, so that the vehicle does not need to meet the requirement of high-power charging, the comfort of an air conditioner in a member cabin is not influenced completely when the air conditioner is used, and the comfort of the air conditioner in the member cabin is improved.
4. According to the embodiment of the invention, the charging pile is arranged to comprise the cooling module, so that the heat dissipation part is not arranged in the vehicle, and the noise in the vehicle is avoided.
5. The charging pile is arranged to comprise the cooling module, and the cooling module is used for cooling the battery in the high-power quick charging process, so that the control logic of a heat management system of the vehicle and the control logic of a vehicle air conditioner are not required to be coupled, the calibration period is short, and the development period and the development cost of the whole vehicle are reduced.
6. The charging pile comprises the cooling module, the cooling module is used for uniformly cooling the battery in the high-power quick charging process, the thermal runaway accident is prevented, the temperature difference in the battery pack is reduced, the formation of a local hot area is inhibited, the battery at a high-temperature position is prevented from being attenuated too fast, the overall service life of the battery pack is shortened, the performance of the battery pack is optimal, the efficiency of the battery pack is highest, and potential safety hazards caused by the thermal runaway can be eliminated.
7. According to the embodiment of the invention, the charging pile comprises the liquid cooling gun, so that the charging gun can work in a safe range in the charging process.
8. Through the mode that sets up energy storage equipment, when carrying out high-power quick charge, can provide the electric energy, avoid causing the influence to the commercial power.
9. According to the embodiment of the invention, when the temperature of the battery is not higher than the preset battery temperature threshold, the pulse signal with the frequency higher than the preset frequency is adopted to heat and charge the battery of the vehicle to be charged, and the pulse signal with the frequency higher than the preset frequency, namely the high-frequency pulse signal, has high heating speed, so that the aim of quick charging can be achieved, the battery is preheated when the temperature of the battery is lower, the temperature of the battery is improved, the charging safety at low temperature is ensured, and the charging speed is improved.
10. The battery is heated by adopting the electric heating and high-frequency pulse heating modes simultaneously, and compared with the mode of heating the battery only by electric heating, the heating speed is further increased, the battery is preheated when the temperature of the battery is lower, the temperature of the battery is increased, the charging safety at low temperature is ensured, and the charging speed is increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is to be understood that the drawings in the following description are merely exemplary of some embodiments of the invention. For a person skilled in the art, without inventive effort, further figures can be obtained from these figures.
FIG. 1 is a schematic diagram of a prior art vehicle-mounted thermal management system for heating a battery by external heat conduction;
fig. 2 is a schematic structural diagram of a charging pile according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a cooling module according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of a charging method of a charging pile according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of pulse charging provided by an embodiment of the present invention;
fig. 6 is a schematic signal transmission diagram of an overcharge controller according to an embodiment of the present invention;
fig. 7 is another schematic flow chart of a charging method of a charging pile according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a charging device of a charging pile according to an embodiment of the present invention.
In fig. 1-8, 1 power conversion module, 11DC/DC module, 2 overcharge controller, 3 charge gun, 4 cooling module, 5 liquid cooling gun, 6 communication module, 7 energy storage device, 8 metering module, 9 financial module, 10 human-computer interaction module, 12 water heater, 41 compressor, 42 condenser, 43 cooling fan, 44 radiator, 45 refrigerant pressure sensor, 46 plate heat exchanger, 47 electronic three-way valve, 48 water pump, 49 liquid supplement pot, 401 liquid level sensor, 402 water temperature sensor, 403 refrigerant pipeline, 404 cooling liquid pipeline, 80 battery, 90 heat-conducting fin.
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. It should be apparent that the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that the terms "comprising" and "having" and any variations thereof in the embodiments and drawings of the present invention are intended to cover non-exclusive inclusions. A process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the invention discloses a charging method and a charging device of a charging pile, which aim to reduce vehicle cost and improve charging speed under a low-temperature condition. The following provides a detailed description of embodiments of the invention.
Fig. 2 is a schematic structural diagram of a charging pile provided in an embodiment of the present invention, and referring to fig. 2, the charging pile includes a power conversion module 1, a super charging controller 2, a charging gun 3, a cooling module 4, a water heating heater 12, and a liquid cooling gun 5, the super charging controller 2 is respectively connected to the power conversion module 1, the water heating heater 12, the cooling module 4, the charging gun 3, and the liquid cooling gun 5, the power conversion module 1 is connected to the charging gun 3, and the cooling module 4 is connected to the liquid cooling gun 5, where the liquid cooling gun 5 has a cooling gun head outside a battery.
Fig. 3 is a schematic structural diagram of a cooling module according to an embodiment of the present invention, and referring to fig. 3, the cooling module 4 may include a compressor 41, a condenser 42, a cooling fan 43, a radiator 44, a refrigerant pressure sensor 45, a plate heat exchanger 46, an electronic three-way valve 47, a water pump 48, a fluid infusion pot 49, a fluid level sensor 401, a water temperature sensor 402, a refrigerant pipeline 403, and a coolant pipeline 404.
With reference to fig. 3, an outlet of the compressor 41 is connected to an inlet of the condenser 42, an air suction port of the compressor 41 is connected to a refrigerant outlet of the plate heat exchanger 46, an outlet of the condenser 42 is connected to a refrigerant inlet of the plate heat exchanger 46 through a first outlet pipeline, the refrigerant pressure sensor 45 is disposed in the first outlet pipeline, an outlet of the radiator 44 is connected to an inlet of the fluid infusion pot 49, an inlet of the radiator 44 is connected to an outlet of the electronic three-way valve 47, a waterway inlet of the plate heat exchanger 46 is connected to a second outlet of the electronic three-way valve 47, a waterway outlet of the plate heat exchanger 46 is connected to an inlet of the fluid infusion pot 49, an inlet of the water pump 48 is connected to the liquid cooling gun 5, an outlet of the water pump 48 is connected to an inlet of the electronic three-way valve 47, the liquid cooling gun 5 is connected to an outlet of the fluid infusion pot 49 through a second outlet pipeline, the water temperature sensor 402 is disposed in the second outlet pipeline, the liquid level sensor 401 is disposed in the fluid infusion pot 49, the fluid infusion pot 49 contains cooling fluid, and the cooling fan 43 is disposed in parallel to the condenser 42.
The overcharge controller 2 is connected to a liquid level sensor 401, a compressor 41, a cooling fan 43, a refrigerant pressure sensor 45, a water temperature sensor 402, a water pump 48, and an electronic three-way valve 47, respectively.
The functions of the structures are described below:
the compressor 41: in the refrigerant loop of the battery external cooling system, the refrigerant circuit plays a role of compressing and driving the refrigerant, and consumes electric energy to draw the refrigerant from the low-pressure area to be compressed and then sent to the high-pressure area. And the air conditioner pipeline is fixed on the equipment main body structure of the cooling module 4 and is connected with the refrigerant loop through an air conditioner pipeline, wherein the air conditioner pipeline comprises a high-pressure pipeline and a low-pressure pipeline.
The water pump 48: in a water loop of a cooling system outside the battery, electric energy is consumed to enable cooling liquid to flow in the system, and the purposes of designing flow and finishing heat exchange are achieved. Fixed on the equipment body of the cooling module 4 and connected in series in the water loop through the water inlet and outlet pipes.
Condenser 42: in the battery external cooling system refrigerant circuit, a high-temperature high-pressure gas refrigerant is heat-exchanged with air and converted into a low-temperature high-pressure liquid refrigerant. And the cooling module is fixed on the main structure of the cooling module 4 and is connected with the refrigerant loop through an air conditioner pipeline.
The heat sink 44: in the water circuit of the external cooling system of the battery, the high-temperature cooling liquid is exchanged with air, and the temperature of the cooling liquid is reduced. Fixed on the main structure of the cooling module 4 and connected with the cooling system through a water pipe.
Cooling fan 43: the operation of consuming electric energy makes the radiator 44 and the condenser 42 generate air flow on the surface, and realizes the heat exchange between the radiator 44 and the condenser 42. Is fixed to the equipment body structure of the cooling module 4 in parallel with the condenser 44.
Plate heat exchanger 46: in a battery external cooling system refrigerant loop, heat exchange is carried out through the plate, so that heat in the cooling liquid loop is exchanged to the refrigerant loop, and system heat dissipation is realized. Is fixed on the main structure of the cooling module 4 and is respectively connected with the refrigerant loop and the water loop.
The electronic three-way valve 47: in the water loop of the external cooling system of the battery, the input and output flow channels are switched through electronic control, so that the system is switched between natural convection cooling and forced cooling. The electronic three-way valve is connected in series in the water loop.
Liquid feeding pot 49: in the water loop of the battery external cooling system, the water replenishing function is undertaken, when the pressure is too high or the cooling liquid is excessive, redundant gas and cooling liquid flow out from a bypass water channel of the kettle, and the bad effect of pipe burst caused by the too high pressure of the cooling system is avoided. And the device main body structure is fixed on the cooling module 4, and the arrangement position is located at the highest point of the system and is connected in series in the system.
Level sensor 401: in the outside cooling system water return of battery, install in the inside of fluid infusion kettle 49, when the system does not lack water, level sensor 401's major structure soaks in liquid, and after the system weeping, the liquid level reduces, and level sensor 401 can't be soaked by whole, and at this moment, surpass and fill controller 2 and gather level sensor 401's resistance signal in real time, for example judge whether resistance signal is less than the predetermined resistance threshold value when producing the change, if yes, confirm to lack the liquid, output alarm information to protect.
Refrigerant pressure sensor 45: in the battery external cooling system refrigerant circuit, arranged on the outlet line of the condenser 42, i.e. the first outlet line, the high pressure of the system is sensed there, wherein different high pressure pressures correspond to different feedback voltages. The overcharge controller 2 collects the feedback voltage of the refrigerant pressure sensor 45 for system control and protection, wherein the higher the high pressure is, the higher the rotating speed of the cooling fan 43 is, and when the high pressure is greater than a preset alarm value, the overcharge controller 2 controls the compressor 41 to perform shutdown protection.
The water temperature sensor 402: in the water loop of the battery external cooling system, the battery external cooling system is arranged in a water outlet pipe of the equipment, namely a second water outlet pipeline, the overcharge controller 2 collects resistance signals of the overcharge controller and determines the water outlet temperature corresponding to the resistance signals through a sensor resistance and temperature corresponding table for monitoring and water temperature target control reference, and specifically, the rotating speed of the compressor 41 is controlled according to the water outlet temperature to adjust the refrigeration power, so that the water outlet temperature meets the target requirement.
Liquid cooling gun 5: and in the water loop of the battery external cooling system, the water loop is in butt joint communication with a vehicle cooling system, and plays roles of connection and sealing. The equipment line terminals located in the cooling module 4 are fixed in the equipment sockets of the cooling module 4 when not connected to the vehicle.
Refrigerant line 403: in the battery external cooling system refrigerant circuit.
Coolant line 404: in the battery external cooling system water loop.
Fig. 4 is a schematic flow chart of a charging method of a charging pile according to an embodiment of the present invention. The method is applied to the overcharge controller 2. The method specifically comprises the following steps:
s110: and acquiring authentication information of the vehicle to be charged, judging whether the vehicle to be charged has a super-charging function according to the authentication information, and if so, executing a step S120, wherein the super-charging function is a function of charging by using current larger than preset power.
When the vehicle to be charged needs to be charged, the vehicle enters the charging parking space. Because not all electric vehicles have the overcharge function, the overcharge function is a function of charging with a current larger than a preset power, that is, a high-power quick-charging function, an overcharge controller of a charging pile needs to acquire authentication information of a vehicle to be charged, then judges whether the vehicle to be charged has the overcharge function according to the authentication information, and performs subsequent steps according to a judgment result, wherein the authentication information is information representing whether the vehicle has the overcharge function.
The method for acquiring the authentication information of the vehicle to be charged by the overcharge controller includes, but is not limited to, the following two methods:
firstly, the overcharge controller acquires picture information of a vehicle to be charged, and searches authentication information corresponding to the picture information from a cloud according to the picture information.
And the second method comprises the following steps: the super-charging controller obtains license plate information of a vehicle to be charged, and searches authentication information corresponding to the license plate information from the cloud according to the license plate information.
S120: and judging whether first handshake information sent by the vehicle to be charged is received, and if so, executing step S130.
After confirming that the vehicle to be charged has the super-charging function, the charging gun is manually connected with the vehicle to be charged.
Because the handshake protocol is a network protocol for the client and the server to confirm the identities of each other, if the charging gun 3 is successfully connected with the vehicle to be charged, the vehicle to be charged can send first handshake information to the overcharge controller 2, so that the overcharge controller 2 can judge whether the charging gun 3 is successfully connected with the vehicle to be charged by judging whether the first handshake information sent by the vehicle to be charged is received, and perform subsequent steps according to the judgment result.
S130: acquiring battery information of a vehicle to be charged, judging whether the temperature of the battery is higher than a preset battery temperature threshold value according to the battery information, if not, executing a step S140, and if so, executing a step S150.
When first handshake information sent by the vehicle to be charged is received, it is indicated that the charging gun is successfully connected with the vehicle to be charged. At this time, the cooling state of the vehicle to be charged needs to be confirmed, specifically, battery information of the vehicle to be charged needs to be acquired, whether the temperature of the battery is higher than a preset battery temperature threshold value or not is judged according to the battery information, and subsequent steps are performed according to the judgment result.
The battery information at least includes a temperature of the battery, and may further include a cell voltage and a remaining charge margin in the battery.
S140: and the control power conversion module transmits the electric energy of the water heating heater to a battery of the vehicle to be charged through the charging gun for heating and charging.
When the temperature of the battery is not higher than the preset battery temperature threshold, it indicates that there is a heating demand for the battery, and at this time, the power conversion module 1 needs to be controlled to transmit the electric energy of the water heater 12 to the battery of the vehicle to be charged through the charging gun 3 for heating and charging. From this, can directly heat the battery of treating the vehicle that charges through electric heating's mode, compare in heat-conducting mode, rate of heating is fast, consequently, can reach quick charge's purpose, realize preheating the battery when battery temperature is lower, promote battery temperature, ensure the security of charging under the low temperature to improve charge speed.
S150: and obtaining cooling state information of the vehicle to be charged, judging whether the vehicle to be charged supports external cooling of the charging pile according to the cooling state information, and if so, executing step S160.
When the temperature of the battery is higher than a preset battery temperature threshold value, the battery temperature is higher, a cooling requirement exists, at the moment, cooling state information of the vehicle to be charged needs to be acquired, whether the vehicle to be charged supports external cooling of the charging pile or not is judged according to the cooling state information, and subsequent steps are carried out according to a judgment result.
Wherein the cooling state information identifies whether the vehicle to be charged supports external cooling of the charging pile.
The obtaining of the cooling state information of the vehicle to be charged may be: the vehicle controller of the vehicle to be charged sends the cooling state information to the overcharge controller 2, and the overcharge controller 2 receives the cooling state information.
S160: and acquiring the connection state information of the liquid cooling gun, judging whether the liquid cooling gun is successfully connected with the vehicle to be charged according to the connection state information, and if so, executing the step S170.
When the vehicle to be charged supports external cooling of the charging pile, the charging pile enters a complete overcharge mode, cooling connection state confirmation is needed, namely whether the connection between the liquid cooling gun and the vehicle to be charged is successful or not is confirmed, specifically, connection state information of the liquid cooling gun is obtained, whether the connection between the liquid cooling gun and the vehicle to be charged is successful or not is judged according to the connection state information, and subsequent steps are carried out according to the judgment result.
The method for acquiring the connection state information of the liquid cooling gun can be as follows: and the vehicle controller of the vehicle to be charged sends the connection state information of the liquid cooling gun to the super charging controller 2, and the super charging controller 2 receives the connection state information of the liquid cooling gun.
S170: and acquiring liquid cooling state detection information, judging whether the cooling module works normally according to the liquid cooling state detection information, and if so, executing the step S180.
When the liquid cooling gun is successfully connected with the vehicle to be charged, the liquid cooling state of the pile end is required to be detected, specifically, liquid cooling state detection information is obtained, whether the cooling module 4 works normally or not is judged according to the liquid cooling state detection information, and the subsequent steps are carried out according to the judgment result.
Wherein, the mode of obtaining the liquid cooling state detection information can be as follows: and receiving the liquid cooling state detection information sent by the cooling module 4. The liquid cooling state detection information identifies whether the cooling module 4 is operating normally.
S180: and acquiring communication information between the vehicle to be charged and the charging pile, judging whether the vehicle to be charged and the charging pile are in communication connection or not according to the communication information, and if so, executing the step S190.
After the cooling module 4 works normally, the vehicle-pile system detection is needed, specifically, communication information between the vehicle to be charged and the charging pile needs to be acquired, whether the vehicle to be charged and the charging pile are in communication connection or not is judged according to the communication information, and the subsequent steps are carried out according to the judgment result.
Continuing to refer to fig. 2, fill electric pile and still include communication module 6, the mode of obtaining the vehicle of waiting to charge and filling the intercommunication information between the electric pile can be: and receiving the communication information sent by the communication module 6. The communication module 6 is responsible for transmitting status information such as charging status and fault information to the server and transmitting a server requirement instruction.
And the communication information marks whether the vehicle to be charged is in communication connection with the charging pile.
S190: the control power conversion module charges a battery of a vehicle to be charged through a charging gun, acquires the ambient temperature around the vehicle to be charged, and judges whether the ambient temperature is smaller than a preset temperature threshold value or not; if yes, the first outlet of the electronic three-way valve 47 is controlled to be communicated with the inlet of the radiator 44, the water pump 48 and the cooling fan 43 are controlled to operate to cool the battery of the vehicle to be charged through the liquid cooling gun 5, and when the charging is finished, the water pump 48 and the cooling fan 43 are controlled to stop operating.
After the vehicle to be charged is in communication connection with the charging pile, the power conversion module 1 can be controlled to charge the battery of the vehicle to be charged through the charging gun 3.
When a battery of a vehicle to be charged is cooled, the ambient temperature around the vehicle to be charged needs to be acquired, and whether the ambient temperature is less than a preset temperature threshold is judged, wherein the preset temperature threshold can be 20-X, and X is the temperature determined according to actual calibration.
If the ambient temperature is lower than the preset temperature threshold, which indicates that the current temperature is lower, the battery of the vehicle to be charged can be cooled by performing a natural convection cooling mode, specifically, referring to fig. 3, the first outlet of the electronic three-way valve 47 is controlled to be communicated with the inlet of the radiator 44, the water pump 48 and the cooling fan 43 are controlled to operate, the battery of the vehicle to be charged is cooled by the liquid cooling gun 5, and when the charging is finished, the water pump 48 and the cooling fan 43 are controlled to stop operating.
In one implementation, the method may further include:
and collecting a resistance signal of the liquid level sensor 401, and outputting alarm information when the resistance signal is smaller than a preset resistance threshold value.
When the resistance signal is smaller than the preset resistance threshold value, it is indicated that the liquid in the liquid replenishing kettle 49 is less at this moment, and alarm information needs to be output to remind a worker to replenish the liquid.
As can be seen from the above, the present embodiment may obtain authentication information of a vehicle to be charged, determine whether the vehicle to be charged has a super charging function according to the authentication information, wherein the super charging function is a function of charging with a current greater than a preset power, if the vehicle to be charged has the super charging function, determine whether first handshake information sent by the vehicle to be charged is received, if the first handshake information is received, obtain battery information of the vehicle to be charged, determine whether a temperature of the battery is higher than a preset battery temperature threshold according to the battery information, if the temperature is not higher than the preset battery temperature threshold, control the power conversion module to transmit electric energy of the water heater to the battery of the vehicle to be charged through the charging gun for heating and charging, if the temperature is higher than the preset battery temperature threshold, obtain cooling state information of the vehicle to be charged, determine whether the vehicle to be charged supports external cooling of the charging pile according to the cooling state information, if the charging pile supports, obtain connection state information of the liquid cooling gun, determine whether the liquid cooling gun and the vehicle to be charged are successfully connected according to the connection state information, if the liquid cooling state detection information is successfully obtained, determine whether the cooling module normally works according to the cooling module according to the liquid cooling state detection information, determine whether the vehicle and the charging pile are connected, determine whether the charging environment communication between the charging gun and the charging environment to be charged is lower than the preset charging environment temperature, and the temperature of the vehicle to be charged, and determine whether the vehicle to be charged, if the charging gun, and the temperature of the vehicle to be charged are connected, and the vehicle to be charged; if yes, the first outlet of the electronic three-way valve 47 is controlled to be communicated with the inlet of the radiator 44, the water pump 48 and the cooling fan 43 are controlled to operate to cool the battery of the vehicle to be charged through the liquid cooling gun 5, and when the charging is finished, the water pump 48 and the cooling fan 43 are controlled to stop operating. Therefore, in the embodiment of the invention, the battery of the vehicle to be charged can be cooled by arranging the cooling module in the charging pile, the vehicle space and the whole vehicle weight are not required to be occupied, the vehicle cost is reduced, the vehicle can be rapidly charged with high power, and when the temperature of the battery is not higher than the preset battery temperature threshold value, the battery of the vehicle to be charged is directly heated by adopting the water heating heater in an electric heating mode.
And the existing charging pile has no function of cooling the vehicle battery, and in order to solve the problem of high-power charging and heat dissipation, the vehicle needs to be provided with a high-power battery liquid cooling system, and the battery liquid cooling system has heavy weight and high cost, and only operates at full power under a high-temperature quick charging scene, so that the utilization rate is low. In the embodiment of the invention, the charging pile is arranged to comprise the cooling module, so that the vehicle is not required to be provided with a high-power battery liquid cooling system, the vehicle space and the weight of the whole vehicle are not required to be occupied, the cost of the whole vehicle is reduced, and the problem of low utilization rate of the high-power battery liquid cooling system arranged on the vehicle is avoided.
And the existing charging pile has no function of cooling the vehicle battery, so that if an air conditioner is used while the vehicle is charged at high power, the requirements of lifting temperature of a passenger compartment and charging at high power cannot be met simultaneously, and the comfort of the air conditioner in the passenger compartment is poor. The charging pile is arranged to comprise the cooling module, so that the vehicle does not need to meet the requirement of high-power charging, the comfort of an air conditioner in a member cabin is not influenced when the air conditioner is used, and the comfort of the air conditioner in the member cabin is improved.
And the existing vehicle needs the high-speed operation of the vehicle-mounted heat dissipation component during high-power charging and heat dissipation, so that the noise in the vehicle is large. And the charging pile is arranged to comprise the cooling module in the embodiment of the invention, so that the heat dissipation part is not arranged in the vehicle, and the noise in the vehicle is avoided.
And the existing charging pile has no function of cooling the vehicle battery, the vehicle needs to couple the control logic of the thermal management system of the vehicle and the control logic of the vehicle air conditioner in order to cool the battery in the high-power quick charging process, and the control logics of the vehicle and the vehicle air conditioner are complex, so that the calibration period is long, the development period of the whole vehicle is further long, and the development cost is high. In the embodiment of the invention, the charging pile is arranged to comprise the cooling module, and the cooling module is used for cooling the battery in the high-power quick charging process, so that the control logic of the heat management system of the vehicle and the control logic of the air conditioner of the vehicle are not required to be coupled, the calibration period is short, and the development period and the development cost of the whole vehicle are reduced.
And, when the existing charging pile is used for high-power quick charging, various electrochemical reactions and physical changes occur in the battery of the electric automobile, the heat generation power of a battery system is too large, so that a large amount of heat is generated, if the heat cannot be well dissipated, the temperature of the battery is increased to be out of the normal working temperature range, so that the temperature field distribution of the battery pack is uneven, the electrochemical performance of the battery pack can be seriously reduced, the safety and the durability of the battery are influenced, and meanwhile, the difference of the temperature of each single battery can also cause the charging and discharging capacity of each power battery to be different, so that the service cycle life of the battery pack is reduced. The charging pile comprises the cooling module, the cooling module is used for uniformly cooling the battery in the high-power quick charging process, the occurrence of thermal runaway accidents is prevented, the temperature difference in the battery pack is reduced, the formation of local hot areas is inhibited, the battery at a high-temperature position is prevented from being attenuated too fast, the overall service life of the battery pack is shortened, the performance of the battery pack is optimal, the efficiency of the battery pack is highest, and potential safety hazards caused by thermal runaway can be eliminated.
And the charging pile comprises a liquid cooling gun, so that the charging gun can work in a safe range in the charging process.
After step S140 of the method shown in fig. 4, the method may further include:
when the temperature of the battery reaches a preset battery temperature threshold value, the power conversion module is controlled to intermittently output a pulse signal to the battery of the vehicle to be charged through the charging gun 3 to heat and charge the battery of the vehicle to be charged, wherein the frequency of the pulse signal is greater than the preset frequency.
Because the battery of the vehicle to be charged is heated continuously by the water heating heater 12, the temperature of the battery of the vehicle to be charged rises, and when the temperature of the battery reaches the preset battery temperature threshold, the power conversion module 1 can be controlled to intermittently output the pulse signal to the battery of the vehicle to be charged through the charging gun 3 to heat and charge the battery of the vehicle to be charged, wherein the frequency of the pulse signal is greater than the preset frequency.
Fig. 5 is a schematic diagram of pulse charging according to an embodiment of the present invention, referring to fig. 5, the power conversion module 1 may include a DC/DC module 11, and the overcharge controller 2 controls the power conversion module 1 to intermittently output a pulse signal to a battery of a vehicle to be charged through the charging gun 3 to heat and charge the battery of the vehicle to be charged, where: the overcharge controller 2 controls the DC/DC module 11 to intermittently output pulse signals to the battery of the vehicle to be charged through the charging gun 3 to heat and charge the battery of the vehicle to be charged.
Because the pulse signal that the frequency is greater than predetermineeing the frequency is that high frequency pulse signal's rate of heating is fast, consequently, can reach quick charge's purpose, from this, through adopting electric heating and high frequency pulse heating's mode to heat the battery simultaneously, compare in only heating the battery through electric heating, further improved rate of heating, realize preheating the battery when the battery temperature is lower, promote the battery temperature, ensure the security of charging under the low temperature to improve the speed of charging.
Because the existing fast charging pile has no energy storage device, when high-power fast charging is carried out, the requirement on a mains supply end is high, the impact on a mains network is large, the mains supply is interfered, and the power shortage in the power consumption peak period is easily caused.
The commercial power is stored in the energy storage battery through the energy storage device 7, and the direct current electric energy is provided for the super charging pile when the super charging pile works.
From this, through the mode that sets up energy storage equipment 7, when carrying out high-power quick charge, can provide the electric energy, avoid causing the influence to the commercial power.
On the basis of the method shown in fig. 1, after step S110, the charging method for the charging pile provided in the embodiment of the present invention may further include:
if the vehicle does not have the function of overcharging, judging whether second handshake information sent by the vehicle to be charged is received;
if the charging pile is received, acquiring first state information of the charging pile, and judging whether the charging pile works normally or not according to the first state information of the charging pile;
and if the charging gun is normal, controlling the power conversion module 1 to charge the battery of the vehicle to be charged through the charging gun 3.
When the vehicle to be charged is confirmed not to have the overcharge function, a common direct-current quick charge mode needs to be carried out, and the charging gun 3 is manually connected with the vehicle to be charged.
Because the handshake protocol is a network protocol for the client and the server to confirm the identities of each other, if the charging gun 3 is successfully connected with the vehicle to be charged, the vehicle to be charged can send second handshake information to the overcharge controller 2, and therefore, the overcharge controller 2 can judge whether the charging gun 3 is successfully connected with the vehicle to be charged by judging whether the second handshake information sent by the vehicle to be charged is received.
When the second handshake information sent by the vehicle to be charged is received, it is indicated that the charging gun 3 is successfully connected with the vehicle to be charged. At the moment, first state information of the charging pile is obtained, whether the charging pile normally works is judged according to the first state information of the charging pile, and whether the charging pile normally works is identified according to the first state information.
After confirming that the charging pile works normally, entering a common direct-current quick charging process, the super-charging controller 2 controls the power conversion module 1 to charge the battery of the vehicle to be charged through the charging gun 3, and at the moment, the charging is only carried out in a direct-current mode and pulse signals are not involved.
Therefore, when the vehicle to be charged does not have the super-charging function, the battery of the vehicle to be charged is charged in the ordinary direct current quick-charging mode.
On the basis of the method shown in fig. 1, after step S150, the charging method for the charging pile according to the embodiment of the present invention may further include:
when the vehicle to be charged does not support external cooling of the charging pile, second state information of the charging pile is obtained, and whether the charging pile works normally or not is judged according to the second state information of the charging pile;
and if the charging gun is normal, controlling the power conversion module to charge the battery of the vehicle to be charged through the charging gun.
When the vehicle to be charged does not support external cooling of the charging pile, second state information of the charging pile is acquired, whether the charging pile normally works is judged according to the second state information of the charging pile, and whether the charging pile normally works is identified according to the second state information.
After confirming that the charging pile normally works, the charging pile enters a common super-charging mode, the super-charging controller 2 controls the power conversion module 1 to charge the battery of the vehicle to be charged through the charging gun 3, at the moment, the charging is only carried out in a direct current mode, and pulse signals are not involved.
Therefore, when the vehicle to be charged does not support external cooling of the charging pile, the battery of the vehicle to be charged is charged in a common super-charging mode.
Continuing to refer to fig. 2, fill electric pile and can also include metering module 8 and financial module 9, and metering module 8 and financial module 9 all are connected with surpassing and fill controller 2, and metering module 8 is used for counting the electric energy that the charging process consumed, and financial module 9 is used for counting the calculation amount of consumption according to the electric energy of consumption to undertake the relevant function of payment.
With continued reference to fig. 2, the charging pile provided in the embodiment of the present invention may further include a human-computer interaction module 10, where the human-computer interaction module 10 is connected to the overcharge controller 2.
The main carrier of the human-computer interaction module 10 is a touch screen, collects user input information, displays charging pile state information, and interacts with the overcharge controller 2.
After each judgment step of the charging method of the charging pile, human-computer prompting can be performed through a human-computer interaction module, for example: when confirming that the vehicle to be charged has the super charging function, the vehicle to be charged can be prompted by a person and a machine with the super charging function, and when confirming that the vehicle to be charged supports external cooling of the charging pile, the vehicle to be charged can be prompted by the person and the machine with the function of supporting external cooling of the charging pile.
Therefore, by means of the human-computer interaction module 10, human-computer prompting can be carried out, and checking is convenient.
Fig. 6 is a schematic diagram of signal transmission of the overcharge controller 2 according to an embodiment of the present invention, and referring to fig. 6, arrows represent signal transmission directions.
In fig. 6, the left side of the overcharge controller 2 is the signal input side: super fill a liquid level sensor for level sensor 401, high-pressure refrigerant pressure derives from refrigerant pressure sensor 45, car end BMS battery management system information derives from the car end BMSCAN signal that the rifle gathered that charges, and wherein, BMS is battery management system, and CAN is controller area network. The energy storage device state information and the grid power supply capability information are derived from an energy storage device EMS (Engine Management System). The super-charging pile man-machine input is from a super-charging pile touch screen module. The remote and big data information comes from the background server and is transmitted and controlled through the 4G. The temperature signal of the quick-charging gun head comes from the gun head temperature sensor, the temperature of the gun head can be reflected in real time, charging is stopped when the temperature is detected to be too high, and the super-charging piles are all charging piles provided by the embodiment of the invention.
In fig. 6, the right side of the overcharge controller 2 is the signal output side: and signals are output to an oil-cooled water pump at the end of the super-charging pile, the liquid-cooled water pump of the super-charging pile, an electronic water valve in the cooling module 4 and an electric element of the super-charging pile, and man-machine display of the super-charging pile is performed. The cooling fan may be a cooling fan 43 and the compressor may be a compressor 41, outputting an energy storage request, overcharge state information, charge state information, and fault and alarm information.
For convenience of understanding, the charging method for the charging pile provided by the embodiment of the present invention is described below from another perspective, fig. 7 is another schematic flow chart of the charging method for the charging pile provided by the embodiment of the present invention, see fig. 7, the vehicle authentication in fig. 7 is step S110 in fig. 4, the connection state is step S120 in fig. 4, the cooling state is step S150 in fig. 4, the cooling connection state is step S160 in fig. 4, the pile-end liquid cooling state monitoring is step S170 in fig. 4, the vehicle-pile system detection is step S180 in fig. 4, and the cooling mode determination is step S190 in fig. 4, and specifically, see fig. 4 for corresponding description, which is not repeated herein. In fig. 7, the overall flow of vehicle entrance-charge-vehicle exit is shown, Y represents yes, and N represents no.
Corresponding to the method embodiment, an embodiment of the present invention provides a charging apparatus for a charging pile, as shown in fig. 8, where the charging pile includes a power conversion module, a super charging controller, a charging gun, a cooling module, a water heating heater, and a liquid cooling gun, the super charging controller is connected to the power conversion module, the water heating heater, the cooling module, the charging gun, and the liquid cooling gun, respectively, the power conversion module is connected to the charging gun, and the cooling module is connected to the liquid cooling gun;
the cooling module comprises a compressor, a condenser, a cooling fan, a radiator, a refrigerant pressure sensor, a plate heat exchanger, an electronic three-way valve, a water pump, a liquid supplementing kettle, a liquid level sensor, a water temperature sensor, a refrigerant pipeline and a cooling liquid pipeline;
the outlet of the compressor is connected with the inlet of the condenser, the air suction port of the compressor is connected with the refrigerant outlet of the plate heat exchanger, the outlet of the condenser is connected with the refrigerant inlet of the plate heat exchanger through a first outlet pipeline, the refrigerant pressure sensor is arranged in the first outlet pipeline, the outlet of the radiator is connected with the inlet of the liquid supplementing pot, the inlet of the radiator is connected with the outlet of the electronic three-way valve, the waterway inlet of the plate heat exchanger is connected with the second outlet of the electronic three-way valve, the waterway outlet of the plate heat exchanger is connected with the inlet of the liquid supplementing pot, the inlet of the water pump is connected with the liquid cooling gun, the outlet of the water pump is connected with the inlet of the electronic three-way valve, the liquid cooling gun is connected with the outlet of the liquid supplementing pot through a second outlet pipeline, the water temperature sensor is arranged in the second water outlet pipeline, the liquid level sensor is arranged in the liquid supplementing pot, the cooling liquid is filled in the liquid supplementing pot, and the cooling fan is arranged in parallel with the condenser;
the overcharge controller is respectively connected with the liquid level sensor, the compressor, the cooling fan, the refrigerant pressure sensor, the water temperature sensor, the water pump and the electronic three-way valve;
the device is applied to the overcharge controller, and the device can comprise:
the authentication information acquisition module 801 is used for acquiring authentication information of a vehicle to be charged, judging whether the vehicle to be charged has a super-charging function according to the authentication information, and if so, triggering the first judgment module 802, wherein the super-charging function is a function of charging with current larger than preset power;
the first determining module 802 is configured to determine whether first handshake information sent by the vehicle to be charged is received, and if yes, trigger the battery information obtaining module 803;
the battery information obtaining module 803 is configured to obtain battery information of the vehicle to be charged, determine whether the temperature of the battery is higher than a preset battery temperature threshold according to the battery information, trigger the cooling state information obtaining module 804 if the temperature of the battery is higher than the preset battery temperature threshold, and trigger the first control module 805 if the temperature of the battery is not higher than the preset battery temperature threshold;
the first control module 805 is configured to control the power conversion module to transmit electric energy of the water heating heater to a battery of the vehicle to be charged through the charging gun for heating and charging;
the cooling state information obtaining module 804 is configured to obtain cooling state information of the vehicle to be charged, determine whether the vehicle to be charged supports external cooling of the charging pile according to the cooling state information, and if so, trigger the connection state information obtaining module 806;
the connection state information obtaining module 806 is configured to obtain connection state information of the liquid cooling gun, determine whether the liquid cooling gun is successfully connected to the vehicle to be charged according to the connection state information, and if yes, trigger the liquid cooling state detection information obtaining module 807;
the liquid cooling state detection information obtaining module 807 is configured to obtain liquid cooling state detection information, determine whether the cooling module normally operates according to the liquid cooling state detection information, and if so, trigger the communication information obtaining module 808;
the communication information acquiring module 808 is configured to acquire communication information between the vehicle to be charged and the charging pile, determine whether the vehicle to be charged and the charging pile are in communication connection according to the communication information, and trigger the second control module 809 if the vehicle to be charged and the charging pile are in communication connection;
the second control module 809 is configured to control the power conversion module to charge a battery of the vehicle to be charged through the charging gun, obtain an ambient temperature around the vehicle to be charged, and determine whether the ambient temperature is less than a preset temperature threshold; if yes, controlling a first outlet of the electronic three-way valve to be communicated with an inlet of the radiator, controlling the water pump and the cooling fan to operate, cooling a battery of the vehicle to be charged through the liquid cooling gun, and controlling the water pump and the cooling fan to stop operating when charging is finished.
By applying the embodiment of the invention, the authentication information of the vehicle to be charged can be obtained, whether the vehicle to be charged has the overcharge function is judged according to the authentication information, wherein the overcharge function is the function of charging by current larger than the preset power, if the vehicle to be charged has the overcharge function, whether the first handshake information sent by the vehicle to be charged is received is judged, if the first handshake information is received, the battery information of the vehicle to be charged is obtained, whether the temperature of the battery is higher than the preset battery temperature threshold value is judged according to the battery information, if the temperature of the battery is not higher than the preset battery temperature threshold value, the power conversion module is controlled to transmit the electric energy of the water heating heater to the battery of the vehicle to be charged through the charging gun for heating and charging, if the temperature of the battery is higher than the preset battery temperature threshold value, the cooling state information of the vehicle to be charged is obtained, judging whether a vehicle to be charged supports external cooling of a charging pile according to cooling state information, if so, acquiring connection state information of a liquid cooling gun, judging whether the liquid cooling gun and the vehicle to be charged are successfully connected according to the connection state information, if so, acquiring liquid cooling state detection information, judging whether a cooling module normally works according to the liquid cooling state detection information, if so, acquiring communication information between the vehicle to be charged and the charging pile, judging whether the vehicle to be charged and the charging pile are in communication connection according to the communication information, if so, controlling a power conversion module to charge a battery of the vehicle to be charged through the charging gun, acquiring ambient temperature around the vehicle to be charged, and judging whether the ambient temperature is less than a preset temperature threshold value; if the vehicle is charged, controlling a first outlet of the electronic three-way valve to be communicated with an inlet of the radiator, controlling the water pump and the cooling fan to operate, cooling the battery of the vehicle to be charged through the liquid cooling gun, and controlling the water pump and the cooling fan to stop operating when charging is finished. Therefore, in the embodiment of the invention, the battery of the vehicle to be charged can be cooled by arranging the cooling module in the charging pile, the vehicle space and the whole vehicle weight are not required to be occupied, the vehicle cost is reduced, the vehicle can be rapidly charged with high power, and when the temperature of the battery is not higher than the preset battery temperature threshold value, the battery of the vehicle to be charged is directly heated by adopting the water heating heater in an electric heating mode.
In another embodiment of the present invention, the charging apparatus for the charging pile further includes a third control module, where the third control module is configured to control the power conversion module to intermittently output a pulse signal to the battery of the vehicle to be charged through the charging gun to heat and charge the battery of the vehicle to be charged when the temperature of the battery reaches the preset battery temperature threshold after the power conversion module is controlled to transmit the electric energy of the water heating heater to the battery of the vehicle to be charged through the charging gun to heat and charge the battery, and a frequency of the pulse signal is greater than a preset frequency.
In another embodiment of the present invention, the charging pile further includes an energy storage device, and the energy storage device is connected to the power conversion module.
In another embodiment of the present invention, the charging device for the charging pile further includes an acquisition module, where the acquisition module is configured to acquire a resistance signal of the liquid level sensor, and output alarm information when the resistance signal is smaller than a preset resistance threshold.
In another embodiment of the present invention, the charging apparatus for charging pile further includes a second determining module, where the second determining module is specifically configured to:
after judging whether the vehicle to be charged has the overcharge function according to the authentication information, if the vehicle to be charged does not have the overcharge function, judging whether second handshake information sent by the vehicle to be charged is received;
if the charging pile is received, acquiring first state information of the charging pile, and judging whether the charging pile works normally or not according to the first state information of the charging pile;
and if the charging gun is normal, controlling the power conversion module to charge the battery of the vehicle to be charged through the charging gun.
In another embodiment of the present invention, the charging apparatus for a charging pile further includes a third determining module, where the third determining module is specifically configured to:
after judging whether the vehicle to be charged supports external cooling of the charging pile according to the cooling state information, when the vehicle to be charged does not support external cooling of the charging pile, acquiring second state information of the charging pile, and judging whether the charging pile works normally according to the second state information of the charging pile;
and if the charging gun is normal, controlling the power conversion module to charge the battery of the vehicle to be charged through the charging gun.
The steps of any of the above-described method embodiments may be varied and combined in practice and are not limited to the modes listed in this application.
The above device embodiment corresponds to the method embodiment, and has the same technical effect as the method embodiment, and for the specific description, refer to the method embodiment. The device embodiment is obtained based on the method embodiment, and for specific description, reference may be made to the method embodiment section, which is not described herein again.
Those of ordinary skill in the art will understand that: the figures are schematic representations of one embodiment, and the blocks or processes shown in the figures are not necessarily required to practice the present invention.
Those of ordinary skill in the art will understand that: modules in the devices in the embodiments may be distributed in the devices in the embodiments according to the description of the embodiments, or may be located in one or more devices different from the embodiments with corresponding changes. The modules of the above embodiments may be combined into one module, or further split into multiple sub-modules.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The charging method of the charging pile is characterized in that the charging pile comprises a power conversion module, a super-charging controller, a charging gun, a cooling module, a water heating heater and a liquid cooling gun, wherein the super-charging controller is respectively connected with the power conversion module, the water heating heater, the cooling module, the charging gun and the liquid cooling gun, the power conversion module is connected with the charging gun, and the cooling module is connected with the liquid cooling gun;
the cooling module comprises a compressor, a condenser, a cooling fan, a radiator, a refrigerant pressure sensor, a plate heat exchanger, an electronic three-way valve, a water pump, a liquid supplementing kettle, a liquid level sensor, a water temperature sensor, a refrigerant pipeline and a cooling liquid pipeline;
the outlet of the compressor is connected with the inlet of the condenser, the air suction port of the compressor is connected with the refrigerant outlet of the plate heat exchanger, the outlet of the condenser is connected with the refrigerant inlet of the plate heat exchanger through a first outlet pipeline, the refrigerant pressure sensor is arranged in the first outlet pipeline, the outlet of the radiator is connected with the inlet of the liquid supplementing pot, the inlet of the radiator is connected with the outlet of the electronic three-way valve, the waterway inlet of the plate heat exchanger is connected with the second outlet of the electronic three-way valve, the waterway outlet of the plate heat exchanger is connected with the inlet of the liquid supplementing pot, the inlet of the water pump is connected with the liquid cooling gun, the outlet of the water pump is connected with the inlet of the electronic three-way valve, the liquid cooling gun is connected with the outlet of the liquid supplementing pot through a second outlet pipeline, the water temperature sensor is arranged in the second water outlet pipeline, the liquid level sensor is arranged in the liquid supplementing pot, the cooling liquid is filled in the liquid supplementing pot, and the cooling fan is arranged in parallel with the condenser;
the super-charging controller is respectively connected with the liquid level sensor, the compressor, the cooling fan, the refrigerant pressure sensor, the water temperature sensor, the water pump and the electronic three-way valve;
the method is applied to the overcharge controller, and comprises the following steps:
acquiring authentication information of a vehicle to be charged, and judging whether the vehicle to be charged has a super-charging function according to the authentication information, wherein the super-charging function is a function of charging by using current larger than preset power;
if the vehicle has the overcharge function, judging whether first handshake information sent by the vehicle to be charged is received;
if so, acquiring battery information of the vehicle to be charged, and judging whether the temperature of the battery is higher than a preset battery temperature threshold value or not according to the battery information;
if the voltage is not higher than the preset voltage, controlling the power conversion module to transmit the electric energy of the water heating heater to a battery of the vehicle to be charged through the charging gun for heating and charging;
if the charging position is higher than the preset charging position, obtaining cooling state information of the vehicle to be charged, and judging whether the vehicle to be charged supports external cooling of the charging pile according to the cooling state information;
if so, acquiring the connection state information of the liquid cooling gun, and judging whether the liquid cooling gun is successfully connected with the vehicle to be charged according to the connection state information;
if the connection is successful, liquid cooling state detection information is obtained, and whether the cooling module works normally or not is judged according to the liquid cooling state detection information;
if the charging pile is normal, obtaining communication information between the vehicle to be charged and the charging pile, and judging whether the vehicle to be charged and the charging pile are in communication connection or not according to the communication information;
if the communication connection is made, the power conversion module is controlled to charge the battery of the vehicle to be charged through the charging gun, the ambient temperature around the vehicle to be charged is obtained, and whether the ambient temperature is smaller than a preset temperature threshold value is judged; if yes, controlling a first outlet of the electronic three-way valve to be communicated with an inlet of the radiator, controlling the water pump and the cooling fan to operate, cooling a battery of the vehicle to be charged through the liquid cooling gun, and controlling the water pump and the cooling fan to stop operating when charging is finished.
2. The method of claim 1, wherein after the step of controlling the power conversion module to transmit the electric power of the water heating heater to the battery of the vehicle to be charged through the charging gun for heating and charging, the method further comprises:
and when the temperature of the battery reaches the preset battery temperature threshold value, controlling the power conversion module to intermittently output a pulse signal to the battery of the vehicle to be charged through the charging gun to heat and charge the battery of the vehicle to be charged, wherein the frequency of the pulse signal is greater than the preset frequency.
3. The method of claim 1 or 2, wherein the charging post further comprises an energy storage device connected to the power conversion module.
4. The method of claim 1, wherein the method further comprises:
and collecting a resistance signal of the liquid level sensor, and outputting alarm information when the resistance signal is smaller than a preset resistance threshold value.
5. The method according to claim 1, wherein after the step of determining whether the vehicle to be charged is provided with a super-charging function based on the authentication information, the method further comprises:
if the vehicle does not have the overcharge function, judging whether second handshake information sent by the vehicle to be charged is received;
if the charging pile is received, acquiring first state information of the charging pile, and judging whether the charging pile works normally or not according to the first state information of the charging pile;
and if the charging gun is normal, controlling the power conversion module to charge the battery of the vehicle to be charged through the charging gun.
6. The method of claim 1, wherein after the step of determining whether the vehicle to be charged supports external cooling of the charging post based on the cooling status information, the method further comprises:
when the vehicle to be charged does not support external cooling of the charging pile, second state information of the charging pile is obtained, and whether the charging pile works normally or not is judged according to the second state information of the charging pile;
and if the charging gun is normal, controlling the power conversion module to charge the battery of the vehicle to be charged through the charging gun.
7. The charging device of the charging pile is characterized in that the charging pile comprises a power conversion module, a super charging controller, a charging gun, a cooling module, a water heating heater and a liquid cooling gun, wherein the super charging controller is respectively connected with the power conversion module, the water heating heater, the cooling module, the charging gun and the liquid cooling gun, the power conversion module is connected with the charging gun, and the cooling module is connected with the liquid cooling gun;
the cooling module comprises a compressor, a condenser, a cooling fan, a radiator, a refrigerant pressure sensor, a plate heat exchanger, an electronic three-way valve, a water pump, a liquid supplementing kettle, a liquid level sensor, a water temperature sensor, a refrigerant pipeline and a cooling liquid pipeline;
the outlet of the compressor is connected with the inlet of the condenser, the air suction port of the compressor is connected with the refrigerant outlet of the plate heat exchanger, the outlet of the condenser is connected with the refrigerant inlet of the plate heat exchanger through a first outlet pipeline, the refrigerant pressure sensor is arranged in the first outlet pipeline, the outlet of the radiator is connected with the inlet of the liquid supplementing kettle, the inlet of the radiator is connected with the outlet of the electronic three-way valve, the water path inlet of the plate heat exchanger is connected with the second outlet of the electronic three-way valve, the water path outlet of the plate heat exchanger is connected with the inlet of the liquid supplementing kettle, the inlet of the water pump is connected with the liquid cooling gun, the outlet of the water pump is connected with the inlet of the electronic three-way valve, the liquid cooling gun is connected with the outlet of the liquid supplementing kettle through a second outlet pipeline, the water temperature sensor is arranged in the second water outlet pipeline, the liquid level sensor is arranged in the liquid supplementing kettle, and the cooling fan is arranged in parallel with the condenser;
the super-charging controller is respectively connected with the liquid level sensor, the compressor, the cooling fan, the refrigerant pressure sensor, the water temperature sensor, the water pump and the electronic three-way valve;
the device is applied to the overcharge controller, and the device comprises:
the system comprises an authentication information acquisition module, a first judgment module and a second judgment module, wherein the authentication information acquisition module is used for acquiring authentication information of a vehicle to be charged, judging whether the vehicle to be charged has a super-charging function according to the authentication information, and if so, triggering the first judgment module, wherein the super-charging function is a function of charging with current larger than preset power;
the first judging module is used for judging whether first handshake information sent by the vehicle to be charged is received or not, and if so, the battery information acquiring module is triggered;
the battery information acquisition module is used for acquiring battery information of the vehicle to be charged, judging whether the temperature of the battery is higher than a preset battery temperature threshold value or not according to the battery information, if so, triggering the cooling state information acquisition module, and if not, triggering the first control module;
the first control module is used for controlling the power conversion module to transmit the electric energy of the water heating heater to a battery of the vehicle to be charged through the charging gun for heating and charging;
the cooling state information acquisition module is used for acquiring cooling state information of the vehicle to be charged, judging whether the vehicle to be charged supports external cooling of the charging pile according to the cooling state information, and if so, triggering the connection state information acquisition module;
the connection state information acquisition module is used for acquiring the connection state information of the liquid cooling gun, judging whether the liquid cooling gun is successfully connected with the vehicle to be charged or not according to the connection state information, and if so, triggering the liquid cooling state detection information acquisition module;
the liquid cooling state detection information acquisition module is used for acquiring liquid cooling state detection information, judging whether the cooling module normally works according to the liquid cooling state detection information, and if so, triggering the communication information acquisition module;
the communication information acquisition module is used for acquiring communication information between the vehicle to be charged and the charging pile, judging whether the vehicle to be charged and the charging pile are in communication connection or not according to the communication information, and if so, triggering a second control module;
the second control module is used for controlling the power conversion module to charge a battery of the vehicle to be charged through the charging gun, acquiring the ambient temperature around the vehicle to be charged, and judging whether the ambient temperature is smaller than a preset temperature threshold value or not; if yes, controlling a first outlet of the electronic three-way valve to be communicated with an inlet of the radiator, controlling the water pump and the cooling fan to operate, cooling a battery of the vehicle to be charged through the liquid cooling gun, and controlling the water pump and the cooling fan to stop operating when charging is finished.
8. The apparatus of claim 7, further comprising a third control module, configured to control the power conversion module to intermittently output a pulse signal to the battery of the vehicle to be charged through the charging gun to heat and charge the battery of the vehicle to be charged when the temperature of the battery reaches the preset battery temperature threshold after the control of the power conversion module to transmit the electric energy of the water heating heater to the battery of the vehicle to be charged through the charging gun for heating and charging, wherein the frequency of the pulse signal is greater than a preset frequency.
9. The apparatus of claim 7 or 8, wherein the charging post further comprises an energy storage device connected to the power conversion module.
10. The device of claim 7, further comprising a collection module for collecting a resistance signal of the liquid level sensor and outputting an alarm message when the resistance signal is less than a preset resistance threshold.
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| CN115230518A (en) * | 2021-04-23 | 2022-10-25 | 北京昇科能源科技有限责任公司 | Charging method and device of charging pile with refrigeration function |
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| CN115230537B (en) | 2024-04-12 |
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