CN115352294A - Liquid cooling charging control method, system and storage medium - Google Patents
Liquid cooling charging control method, system and storage medium Download PDFInfo
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- CN115352294A CN115352294A CN202210927112.6A CN202210927112A CN115352294A CN 115352294 A CN115352294 A CN 115352294A CN 202210927112 A CN202210927112 A CN 202210927112A CN 115352294 A CN115352294 A CN 115352294A
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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
- B60L53/60—Monitoring or controlling charging stations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
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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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- 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
- Y02T90/14—Plug-in electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to the technical field of charging guns, in particular to a liquid cooling charging control method, a liquid cooling charging control system and a storage medium, wherein the system comprises a liquid cooling controller, a charger and a BMS (battery management system); the charger is respectively in communication connection with the liquid cooling controller and the BMS; the liquid cooling controller is respectively connected with the fan and the electronic oil pump in the liquid cooling loop; the method comprises the following steps: the method comprises the steps that a liquid cooling controller obtains state monitoring data of a liquid cooling loop, whether the state monitoring data are within a working range or not is determined, if yes, a charger is triggered to start charging, and charging demand power fed back by the charger is obtained; after the liquid cooling controller controls the fan and the electronic oil pump to operate in the first mode, if the charging required power is lower than a power threshold value, the second mode is entered; when the temperature monitoring data is within the temperature difference range, entering a first mode for operation, otherwise, entering a third mode; the invention can ensure that the charging gun works in a normal temperature range, thereby prolonging the service life of the charging gun and improving the charging safety.
Description
Technical Field
The invention relates to the technical field of charging guns, in particular to a liquid cooling charging control method, a liquid cooling charging control system and a storage medium.
Background
When the rifle that charges to electric automobile long time high-power, can lead to charging cable and the rifle head of the rifle that charges to generate heat, especially the rifle head contact surface of the rifle that charges can cause metal surface oxidation serious because of generating heat, makes the rifle that charges and the rifle seat contact resistance that charges bigger, influences the life and the security of charging of the rifle that charges.
Therefore, it is necessary to provide a charging control strategy, which can maintain the temperature of the charging cable and the gun head within a normal temperature range, so as to prolong the service life of the charging gun and improve the charging safety.
Disclosure of Invention
The present invention is directed to a method, system and storage medium for controlling a liquid-cooled charging, which solves one or more of the problems of the prior art and provides at least one of the advantages.
In order to achieve the above object, the present invention provides the following technical solutions:
a liquid cooling charging control method is applied to a liquid cooling charging control system, and the liquid cooling charging control system comprises: the system comprises a liquid cooling controller, a charger and a BMS; the charger is respectively in communication connection with the liquid cooling controller and the BMS; the liquid cooling controller is respectively connected with a fan and an electronic oil pump in a liquid cooling loop, cooling liquid is arranged in the liquid cooling loop, and the cooling liquid is used for cooling a cable and a gun head of the liquid cooling charging gun; the control modes of the liquid cooling controller comprise a first mode, a second mode and a third mode; the liquid cooling controller has corresponding fan rotating speed and oil pump rotating speed in a first mode, a second mode and a third mode respectively; the fan rotating speed and the oil pump rotating speed corresponding to the first mode, the second mode and the third mode are sequentially increased;
the method comprises the following steps:
step S100, the liquid cooling controller obtains state monitoring data of the liquid cooling loop; wherein the condition monitoring data comprises: temperature monitoring data, oil outlet pressure and liquid level; the temperature monitoring data includes: the temperature of a positive terminal of a charging gun, the temperature of a negative terminal of the charging gun, the temperature of an oil inlet and the temperature of an oil outlet;
step S200, the liquid cooling controller determines whether the state monitoring data are in a working range, and if the state monitoring data are determined to be in the working range, the charger is triggered to start charging, and charging required power fed back by the charger is obtained;
step S300, the liquid cooling controller controls the fan and the electronic oil pump to operate in a first mode;
step S400, determining whether the charging demand power is lower than a power threshold value; if yes, go to step S500; if not, executing step S700;
step S500, the liquid cooling controller controls the fan and the electronic oil pump to operate in a second mode;
step S600, determining whether the temperature monitoring data is in a temperature difference range in real time; if yes, go to step S500; if not, executing step S700;
and step S700, the liquid cooling controller controls the fan and the electronic oil pump to operate in a third mode.
Further, after step S700, the method further includes:
step S710, in the process that the fan and the electronic oil pump are controlled by the liquid-cooling controller in the third mode to operate, when the charger feeds back a message of stopping charging the battery to the liquid-cooling controller, the liquid-cooling controller controls the fan and the electronic oil pump to operate in the first mode;
step S720, in the process that the liquid cooling controller controls the fan and the electronic oil pump to operate in the first mode, whether the temperature monitoring data are within the temperature difference range is determined in real time; if yes, go to step S300; if not, step S700 is executed.
Further, before the charging demand power fed back by the charger is obtained, the method further includes:
step S211, the charger is connected with the BMS, and result information of whether the BMS allows the battery to be charged is obtained;
step S212, when the BMS allows the battery to be charged, the charger acquires charging data; wherein the charging data comprises a charging voltage and a charging current;
and step S213, the charger determines the required charging power based on the charging data and feeds the required charging power back to the liquid cooling controller.
Further, after triggering the charger to start charging, the method further comprises:
step S221, monitoring the working state of the charger in real time in the charging process of the charger;
step S222, determining whether the charger works normally based on the working state; if the charger is determined to work normally, executing the step S223; otherwise, executing step S224;
step S223, the BMS determines whether the charging prohibition condition is reached, and when the BMS determines that the charging prohibition condition is reached, the BMS sends charging prohibition information to the charger; wherein the charge prohibition condition includes at least one of: the battery is forbidden to be charged, and the charging quantity of the battery reaches the preset electric quantity;
in step S224, the charger stops charging.
Further, in step S200, the liquid cooling controller determines whether the state monitoring data is within an operating range, including:
the hydraulic controller determines whether the oil outlet pressure is below a pressure threshold;
the liquid cooling controller determines whether the liquid level is below a liquid level threshold;
the liquid cooling controller determining whether the cooling liquid flow rate is below a flow rate threshold;
and the liquid cooling controller determines whether the oil inlet temperature, the oil outlet temperature, the positive terminal temperature of the charging gun and the negative terminal temperature of the charging gun are lower than a first temperature threshold value.
Further, after triggering the charger to start charging, the method further comprises:
the liquid cooling controller acquires the state monitoring data in real time, and if the pressure of the oil outlet is lower than a pressure threshold value, the charger is triggered to stop charging;
if the liquid level is determined to be lower than the liquid level threshold value, triggering the charger to stop charging;
if the flow rate of the cooling liquid is lower than the flow rate threshold value, controlling the charging current of the charger to be reduced to be within 125A;
if the oil inlet temperature, the oil outlet temperature, the temperature of the positive terminal of the charging gun and the temperature of the negative terminal of the charging gun are lower than a first temperature threshold value, controlling the charging current of the charger to be reduced to be within 125A;
if the temperature of the positive terminal of the charging gun and the temperature of the negative terminal of the charging gun reach a second temperature threshold or one of the temperatures reaches a third temperature threshold, triggering the charger to stop charging;
if the oil inlet temperature and the oil outlet temperature reach a third temperature threshold value, triggering the charger to stop charging; wherein the first temperature threshold, the second temperature threshold and the third temperature threshold increase in sequence.
A liquid-cooled charging control system, comprising: the system comprises a liquid cooling controller, a charger and a BMS; the charger is respectively in communication connection with the liquid cooling controller and the BMS; the liquid cooling controller is respectively connected with a fan and an electronic oil pump in a liquid cooling loop, and the liquid cooling loop is used for cooling a cable and a gun head of the liquid cooling charging gun; the control modes of the liquid cooling controller comprise a first mode, a second mode and a third mode; the liquid cooling controller has corresponding fan rotating speed and oil pump rotating speed in a first mode, a second mode and a third mode respectively; the fan rotating speed and the oil pump rotating speed corresponding to the first mode, the second mode and the third mode are sequentially increased;
the liquid cooling controller includes:
at least one processor;
at least one memory for storing at least one program;
when the at least one program is executed by the at least one processor, the at least one processor is enabled to implement the liquid-cooled charging control method according to any one of the above aspects.
A computer readable storage medium having a liquid-cooled charging control program stored thereon, the liquid-cooled charging control program when executed by a processor implementing the steps of the liquid-cooled charging control method as in any one of the above.
The invention has the beneficial effects that: the invention discloses a liquid cooling charging control method, a system and a storage medium, wherein a liquid cooling loop is arranged to absorb heat in the charging process, reduce temperature rise in the charging process and dissipate heat in time; the air quantity of the fan and the flow speed of the cooling liquid are correspondingly set according to the charging demand power and the temperature monitoring data, and the temperature of the charging cable and the temperature of the gun head are maintained within a normal temperature range, so that the service life of the charging gun is prolonged, and the charging safety is improved. The invention can also ensure that the charging gun can work in a normal temperature range, thereby saving energy consumption.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a flow chart illustrating a liquid-cooled charging control method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a liquid-cooled charging control apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It is noted that while functional block divisions are provided in device diagrams and logical sequences are shown in flowcharts, in some cases, steps shown or described may be performed in sequences other than block divisions within devices or flowcharts. The terms first, second and the like in the description and in the claims, and the drawings described above, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the application.
First, several terms referred to in the present application are resolved:
the BMS (BATTERY MANAGEMENT SYSTEM) is used for improving the utilization rate of the BATTERY, preventing the BATTERY from being overcharged and overdischarged, prolonging the service life of the BATTERY, and monitoring the state of the BATTERY. Its main functions include: the method comprises the steps of real-time monitoring of physical parameters of the battery, estimation of the state of the battery, online diagnosis and early warning, charging, discharging and pre-charging control, balance management, thermal management and the like.
The charger is a device for charging the vehicle power accumulator of the electric vehicle, and is a power conversion device with specific function for charging the battery. The electric vehicle charger may be divided into a direct current charger and an alternating current charger. After the charger is connected with the power storage battery assembly, the charging information of the power storage battery assembly is obtained through communication, and the charging mode is automatically initialized to be automatically controlled by the power storage battery assembly.
The embodiments of the present invention will be further explained with reference to the drawings.
Referring to fig. 1, fig. 1 is a schematic flow chart of a liquid-cooled charging control method provided by the present invention, where the liquid-cooled charging control system includes: the system comprises a liquid cooling controller, a charger and a BMS; the charger is respectively in communication connection with the liquid cooling controller and the BMS; the liquid cooling controller is respectively connected with a fan and an electronic oil pump in a liquid cooling loop, cooling liquid is arranged in the liquid cooling loop, and the cooling liquid is used for cooling a cable and a gun head of the liquid cooling charging gun; the control modes of the liquid cooling controller comprise a first mode, a second mode and a third mode; the liquid cooling controller has corresponding fan rotating speed and oil pump rotating speed in a first mode, a second mode and a third mode respectively; the fan rotating speed and the oil pump rotating speed corresponding to the first mode, the second mode and the third mode are sequentially increased;
in some embodiments, the fan speed is controlled by the liquid cooling controller to adjust the PWM duty ratio of the fan, and the oil pump speed is controlled by the liquid cooling controller to adjust the PWM duty ratio of the electronic oil pump; the condition monitoring data includes: the temperature of a positive terminal of a charging gun, the temperature of a negative terminal of the charging gun, the temperature of an oil inlet, the temperature of an oil outlet, the pressure of the oil outlet and the liquid level; the BMS is used for managing the battery, and the charger is used for charging the battery.
The method comprises the following steps:
step S100, the liquid cooling controller acquires state monitoring data of the liquid cooling loop; wherein the condition monitoring data comprises: temperature monitoring data, oil outlet pressure and liquid level; the temperature monitoring data includes: the temperature of a positive terminal of a charging gun, the temperature of a negative terminal of the charging gun, the temperature of an oil inlet and the temperature of an oil outlet;
in some embodiments, the liquid cooling loop comprises an oil tank, an electronic oil pump, a liquid cooling gun inlet pipe, a liquid cooling pipe outlet and a radiator, the fan is arranged on the radiator, and the cooling liquid returns to the oil tank after passing through the oil tank, the electronic oil pump, the liquid cooling gun inlet pipe, the liquid cooling pipe outlet and the radiator; and the cable of the liquid cooling charging gun is wrapped by the liquid cooling loop, and the cable and the gun head of the liquid cooling charging gun are cooled through the cooling liquid.
In some embodiments, the temperature sensor is disposed at a corresponding position to detect the temperature of the positive terminal of the charging gun, the temperature of the negative terminal of the charging gun, the temperature of the oil inlet and the temperature of the oil outlet, and the liquid level sensor is disposed to detect the liquid level of the oil tank; the oil outlet pressure is detected by arranging a pressure sensor.
Step S200, the liquid cooling controller determines whether the state monitoring data are in a working range, and if the state monitoring data are determined to be in the working range, the charger is triggered to start charging, and charging required power fed back by the charger is obtained;
in an embodiment, the state monitoring data is compared with a corresponding working range, the state monitoring data is determined to be in the working range, if any working parameter of the electronic oil pump, the liquid cooling pipeline, the temperature of the positive terminal of the charging gun, the temperature of the negative terminal of the charging gun, the temperature of the oil inlet, the temperature of the oil outlet, the pressure of the oil outlet and the liquid level is determined not to be in the working range, the liquid cooling loop is determined to be abnormal, the charger is stopped to be controlled to charge, and the charging safety is guaranteed.
Step S300, the liquid cooling controller controls the fan and the electronic oil pump to operate in a first mode;
step S400, determining whether the charging demand power is lower than a power threshold value; if yes, go to step S500; if not, executing step S700;
step S500, the liquid cooling controller controls the fan and the electronic oil pump to operate in a second mode;
step S600, determining whether the temperature monitoring data is in a temperature difference range in real time; if yes, go to step S500; if not, executing step S700;
and step S700, the liquid cooling controller controls the fan and the electronic oil pump to operate in a third mode.
In the embodiment, the liquid cooling loop is self-checked firstly, after the liquid cooling loop is determined to be normal through state monitoring data, the charger starts charging, the charging demand power fed back by the charger is obtained, and the liquid cooling controller controls the fan and the electronic oil pump to operate in a first mode to complete normal starting; then, if the charging required power is determined to be lower than the power threshold, the liquid cooling controller controls the fan and the electronic oil pump to operate in a corresponding second mode, so that the energy consumption is saved on the premise that the charging gun works in a normal temperature range; when the charger is charged, the temperature of the gun head rises, whether the temperature monitoring data are within the temperature difference range is determined in real time, and when the temperature monitoring data are low, the fan and the electronic oil pump can be controlled to operate according to the second mode, so that the aim of reducing energy consumption is fulfilled; and once the temperature monitoring data exceeds the temperature difference range, judging that the temperature of the gun head of the charging gun is too high, controlling the fan and the electronic oil pump to operate by the liquid cooling controller in a third mode, improving the heat dissipation efficiency of a liquid cooling loop by improving the air volume of the fan and the flow speed of cooling liquid, cooling the charging cable and the gun head, and maintaining the temperature of the charging cable and the gun head within a normal temperature range, so that the service life of the charging gun is prolonged, and the charging safety is improved.
As a further improvement of the above embodiment, after step S700, the method further includes:
step S710, in the process that the fan and the electronic oil pump are controlled by the liquid-cooling controller in the third mode to operate, when the charger feeds back a message of stopping charging the battery to the liquid-cooling controller, the liquid-cooling controller controls the fan and the electronic oil pump to operate in the first mode;
in one embodiment, when the charger reaches a trigger condition for stopping charging the battery, a message for stopping charging the battery is fed back to the liquid cooling controller.
Step S720, in the process that the liquid cooling controller controls the fan and the electronic oil pump to operate in a first mode, whether the temperature monitoring data are within a temperature difference range or not is determined in real time; if yes, go to step S300; if not, step S700 is executed.
In this embodiment, if the temperature monitoring data is within the temperature difference range, the liquid-cooling controller controls the fan and the electronic oil pump to operate in a first mode; the lower fan rotating speed and the lower oil pump rotating speed are kept to operate, so that the aim of reducing energy consumption is fulfilled; otherwise, the liquid cooling controller controls the fan and the electronic oil pump to operate in a third mode, so that heat generated by the liquid cooling cable conductor and the gun head pin terminal in the charging process is quickly taken away by reducing the temperature of the cooling liquid and improving the heat transfer speed of the cooling liquid.
As a further improvement of the foregoing embodiment, before obtaining the charging demand power fed back by the charger, the method further includes:
step S211, the charger is connected with the BMS, and result information of whether the BMS allows the battery to be charged is obtained;
in one embodiment, before charging a battery, detecting the state of a charger, determining whether the charger completes initialization or not, and after the charger completes initialization, acquiring the battery type and the battery capacity monitored by a BMS (battery management system), and performing time synchronization with the BMS; the charging safety is ensured.
Step S212, when the BMS allows the battery to be charged, the charger acquires charging data; wherein the charging data comprises a charging voltage and a charging current;
and step S213, the charger determines the required charging power based on the charging data and feeds the required charging power back to the liquid cooling controller.
As a further improvement of the foregoing embodiment, after triggering the charger to start charging, the method further includes:
step S221, monitoring the working state of the charger in real time in the charging process of the charger;
step S222, determining whether the charger works normally based on the working state; if the charger is determined to work normally, executing the step S223; otherwise, executing step S224;
step S223, the BMS determines whether the charging prohibition condition is reached, and when the BMS determines that the charging prohibition condition is reached, the BMS sends charging prohibition information to the charger; wherein the charge prohibition condition includes at least one of: the battery is forbidden to be charged, and the charging quantity of the battery reaches the preset electric quantity;
in step S224, the charger stops charging.
In one embodiment, when the BMS prohibits the battery from charging, the BMS feeds back to the charger; and when the charger fails or the BM S prohibits the charging of the battery, the charger feeds back a message for stopping the charging of the battery to the liquid cooling controller.
As a further improvement of the above embodiment, in step S200, the liquid-cooling controller determines whether the state monitoring data is within an operating range, including:
the hydraulic controller determines whether the oil outlet pressure is below a pressure threshold;
the liquid cooling controller determines whether the liquid level is below a liquid level threshold;
the liquid cooling controller determining whether the coolant flow rate is below a flow rate threshold;
and the liquid cooling controller determines whether the oil inlet temperature, the oil outlet temperature, the positive terminal temperature of the charging gun and the negative terminal temperature of the charging gun are lower than a first temperature threshold value.
As a further improvement of the foregoing embodiment, after triggering the charger to start charging, the method further includes:
the liquid cooling controller acquires the state monitoring data in real time, and if the pressure of the oil outlet is lower than a pressure threshold value, the charger is triggered to stop charging;
if the liquid level is determined to be lower than the liquid level threshold value, triggering the charger to stop charging;
if the flow rate of the cooling liquid is lower than the flow rate threshold value, controlling the charging current of the charger to be reduced to be within 125A;
if the oil inlet temperature, the oil outlet temperature, the temperature of the positive terminal of the charging gun and the temperature of the negative terminal of the charging gun are lower than a first temperature threshold value, controlling the charging current of the charger to be reduced to be within 125A;
if the temperature of the positive terminal of the charging gun and the temperature of the negative terminal of the charging gun reach a second temperature threshold or one of the temperatures reaches a third temperature threshold, triggering the charger to stop charging;
if the oil inlet temperature and the oil outlet temperature reach a third temperature threshold value, triggering the charger to stop charging; wherein the first temperature threshold, the second temperature threshold and the third temperature threshold increase in sequence.
It should be noted that, in some embodiments, when the electronic oil pump fails, the cooling liquid stops flowing, so that the pressure at the oil outlet is close to 0bar, and it can be determined that the electronic oil pump is in a liquid cooling loop failure state, and the charger is triggered to stop charging, so that the charging current is reduced to 0A;
when the liquid cooling pipeline has cooling liquid leakage and the liquid level sensor triggers the liquid level threshold value due to the accumulation of the leakage amount of the cooling liquid to a certain degree, the fault state of the liquid cooling loop can be judged, the charger is triggered to stop charging, and the charging current is reduced to 0A; when the liquid level is less than the liquid level threshold value, the liquid level alarm switch closes the trigger signal to prompt that cooling liquid needs to be added, and the normal state switch is switched off;
when the liquid cooling pipeline is bent or blocked, the flow rate of the cooling liquid is reduced, the flow rate of the cooling liquid is lower than a flow rate threshold value, the fault state of the liquid cooling loop can be judged, and the charging current of a charger is controlled to be reduced to be within 125A; when the temperature of the oil inlet, the temperature of the oil outlet, the temperature of the positive terminal of the charging gun and the temperature of the negative terminal of the charging gun reach 85 ℃, the fault of the liquid cooling loop can be judged, and the charging current of the charger is controlled to be reduced to be within 125A;
under the general condition, the oil inlet temperature is 10 degrees higher than the oil outlet temperature, the charging gun positive terminal temperature and the charging gun negative terminal temperature, and the oil outlet temperature is 2-3 degrees lower than the charging gun positive terminal temperature and the charging gun negative terminal temperature. In some embodiments, the first temperature threshold is 85 ℃; the second temperature threshold is 90 ℃; the third temperature threshold is 95 ℃; when the temperature of the oil inlet and the temperature of the oil outlet reach 95 ℃, the fault of the liquid cooling loop can be judged, the charging is stopped, and the charging current is reduced to 0A; when the temperature of the positive terminal of the charging gun and the temperature of the negative terminal of the charging gun reach 90 ℃ or one of the temperatures reaches 95 ℃, the charging is stopped, and the charging current is reduced to 0A.
In correspondence with the method of fig. 1, with reference to fig. 2, an embodiment of the invention also provides a liquid cooling charging control apparatus comprising a memory 11, a processor 12 and a computer program stored on the memory 11 and executable on the processor 12.
The processor 12 and the memory 11 may be connected by a bus or other means.
The non-transitory software programs and instructions required to implement the liquid-cooling charging control method of the above-described embodiment are stored in the memory 11, and when executed by the processor 12, the liquid-cooling charging control method of the above-described embodiment is executed.
Corresponding to the method of fig. 1, an embodiment of the present invention further provides a computer-readable storage medium, where a liquid-cooling charging control program is stored on the computer-readable storage medium, and when executed by a processor, the liquid-cooling charging control program implements the steps of the liquid-cooling charging control method according to any one of the above embodiments.
The contents in the above method embodiments are all applicable to the present apparatus embodiment, the functions specifically implemented by the present apparatus embodiment are the same as those in the above method embodiments, and the advantageous effects achieved by the present apparatus embodiment are also the same as those achieved by the above method embodiments.
The Processor may be a Central-Processing Unit (CPU), other general-purpose Processor, a Digital Signal Processor (DSP), an Application-Specific-Integrated-Circuit (ASIC), a Field-Programmable Gate array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, or the like. The general processor can be a microprocessor or the processor can be any conventional processor, etc., the processor is a control center of the liquid-cooling charging control device, and various interfaces and lines are used for connecting all parts of the whole liquid-cooling charging control device operable device.
The memory may be configured to store the computer program and/or the module, and the processor may implement various functions of the liquid-cooled charging control apparatus by operating or executing the computer program and/or the module stored in the memory and calling data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, etc. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart-Media-Card (SMC), a Secure-Digital (SD) Card, a Flash-memory Card (Flash-Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
While the present invention has been described in considerable detail and with particular reference to a few illustrative embodiments thereof, it is not intended to be limited to any such details or embodiments or any particular embodiments, but rather it is to be construed that the invention effectively covers the intended scope of the invention by virtue of the prior art providing a broad interpretation of such claims in view of the appended claims. Furthermore, the foregoing describes the invention in terms of embodiments foreseen by the inventor for which an enabling description was available, notwithstanding that insubstantial modifications of the invention, not presently foreseen, may nonetheless represent equivalent modifications thereto.
Claims (8)
1. A liquid cooling charging control method is characterized in that the method is applied to a liquid cooling charging control system, and the liquid cooling charging control system comprises: the system comprises a liquid cooling controller, a charger and a BMS; the charger is respectively in communication connection with the liquid cooling controller and the BMS; the liquid cooling controller is respectively connected with a fan and an electronic oil pump in a liquid cooling loop, cooling liquid is arranged in the liquid cooling loop, and the cooling liquid is used for cooling a cable and a gun head of the liquid cooling charging gun; the control modes of the liquid cooling controller comprise a first mode, a second mode and a third mode; the liquid cooling controller has corresponding fan rotating speed and oil pump rotating speed in a first mode, a second mode and a third mode respectively; the fan rotating speed and the oil pump rotating speed corresponding to the first mode, the second mode and the third mode are sequentially increased;
the method comprises the following steps:
step S100, the liquid cooling controller obtains state monitoring data of the liquid cooling loop; wherein the condition monitoring data comprises: temperature monitoring data, oil outlet pressure and liquid level; the temperature monitoring data includes: the temperature of a positive terminal of a charging gun, the temperature of a negative terminal of the charging gun, the temperature of an oil inlet and the temperature of an oil outlet;
step S200, the liquid cooling controller determines whether the state monitoring data are in a working range, and if the state monitoring data are determined to be in the working range, the charger is triggered to start charging, and charging required power fed back by the charger is obtained;
step S300, the liquid cooling controller controls the fan and the electronic oil pump to operate in a first mode;
step S400, determining whether the charging demand power is lower than a power threshold value; if yes, go to step S500; if not, executing step S700;
step S500, the liquid cooling controller controls the fan and the electronic oil pump to operate in a second mode;
step S600, determining whether the temperature monitoring data is in a temperature difference range in real time; if yes, go to step S500; if not, executing step S700;
and step S700, the liquid cooling controller controls the fan and the electronic oil pump to operate in a third mode.
2. The liquid cooling charging control method according to claim 1, wherein after step S700, the method further comprises:
step S710, in the process that the fan and the electronic oil pump are controlled by the liquid-cooling controller in the third mode to operate, when the charger feeds back a message of stopping charging the battery to the liquid-cooling controller, the liquid-cooling controller controls the fan and the electronic oil pump to operate in the first mode;
step S720, in the process that the liquid cooling controller controls the fan and the electronic oil pump to operate in a first mode, whether the temperature monitoring data are within a temperature difference range or not is determined in real time; if yes, go to step S300; if not, step S700 is executed.
3. The liquid cooling charging control method according to claim 1, wherein before the charging demand power fed back by the charger is obtained, the method further comprises:
step S211, the charger is connected with the BMS, and result information of whether the BMS allows the battery to be charged is obtained;
step S212, when the BMS allows the battery to be charged, the charger acquires charging data; wherein the charging data comprises a charging voltage and a charging current;
step S213, the charger determines the required charging power based on the charging data, and feeds back the required charging power to the liquid cooling controller.
4. The liquid cooling charging control method according to claim 1, wherein after triggering the charger to start charging, the method further comprises:
step S221, monitoring the working state of the charger in real time in the charging process of the charger;
step S222, determining whether the charger works normally based on the working state; if the charger is determined to work normally, executing the step S223; otherwise, executing step S224;
step S223, the BMS determines whether the charging prohibition condition is reached, and when the BMS determines that the charging prohibition condition is reached, the BMS sends charging prohibition information to the charger; wherein the charge prohibition condition includes at least one of: the battery is forbidden to be charged, and the charging quantity of the battery reaches the preset electric quantity;
in step S224, the charger stops charging.
5. The liquid cooling charging control method according to claim 1, wherein in step S200, the liquid cooling controller determines whether the state monitoring data is within an operating range, and includes:
the hydraulic controller determines whether the oil outlet pressure is lower than a pressure threshold;
the liquid cooling controller determines whether the liquid level is below a liquid level threshold;
the liquid cooling controller determining whether the coolant flow rate is below a flow rate threshold;
and the liquid cooling controller determines whether the oil inlet temperature, the oil outlet temperature, the positive terminal temperature of the charging gun and the negative terminal temperature of the charging gun are lower than a first temperature threshold value.
6. The liquid cooling charging control method according to claim 5, wherein after triggering the charger to start charging, the method further comprises:
the liquid cooling controller acquires the state monitoring data in real time, and if the pressure of the oil outlet is lower than a pressure threshold value, the charger is triggered to stop charging;
if the liquid level is determined to be lower than the liquid level threshold value, triggering the charger to stop charging;
if the flow rate of the cooling liquid is lower than the flow rate threshold value, controlling the charging current of the charger to be reduced to be within 125A;
if the oil inlet temperature, the oil outlet temperature, the temperature of the positive terminal of the charging gun and the temperature of the negative terminal of the charging gun are lower than a first temperature threshold value, controlling the charging current of the charger to be reduced to be within 125A;
if the temperature of the positive terminal of the charging gun and the temperature of the negative terminal of the charging gun reach a second temperature threshold or one of the temperatures reaches a third temperature threshold, triggering the charger to stop charging;
if the oil inlet temperature and the oil outlet temperature reach a third temperature threshold value, triggering the charger to stop charging; wherein the first temperature threshold, the second temperature threshold and the third temperature threshold increase in sequence.
7. The utility model provides a liquid cooling control system that charges which characterized in that, liquid cooling control system that charges includes: the system comprises a liquid cooling controller, a charger and a BMS; the charger is respectively in communication connection with the liquid cooling controller and the BMS; the liquid cooling controller is respectively connected with a fan and an electronic oil pump in a liquid cooling loop, and the liquid cooling loop is used for cooling a cable and a gun head of the liquid cooling charging gun; the control modes of the liquid cooling controller comprise a first mode, a second mode and a third mode; the liquid cooling controller has corresponding fan rotating speed and oil pump rotating speed in a first mode, a second mode and a third mode respectively; the fan rotating speed and the oil pump rotating speed corresponding to the first mode, the second mode and the third mode are sequentially increased;
the liquid cooling controller includes:
at least one processor;
at least one memory for storing at least one program;
when executed by the at least one processor, cause the at least one processor to implement the liquid-cooled charging control method of any of claims 1-6.
8. A computer-readable storage medium, wherein a liquid-cooling charging control program is stored on the computer-readable storage medium, and when executed by a processor, the computer-readable storage medium implements the steps of the liquid-cooling charging control method according to any one of claims 1 to 6.
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| CN202210927112.6A CN115352294A (en) | 2022-08-03 | 2022-08-03 | Liquid cooling charging control method, system and storage medium |
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| CN202210927112.6A CN115352294A (en) | 2022-08-03 | 2022-08-03 | Liquid cooling charging control method, system and storage medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116609685A (en) * | 2023-03-02 | 2023-08-18 | 北京双登慧峰聚能科技有限公司 | Monitoring method and system applied to liquid cooling energy storage system |
| CN117246163A (en) * | 2023-10-16 | 2023-12-19 | 汇工(河北)机械集团有限公司 | Control method of liquid cooling charging gun, controller and charging pile |
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2022
- 2022-08-03 CN CN202210927112.6A patent/CN115352294A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116609685A (en) * | 2023-03-02 | 2023-08-18 | 北京双登慧峰聚能科技有限公司 | Monitoring method and system applied to liquid cooling energy storage system |
| CN117246163A (en) * | 2023-10-16 | 2023-12-19 | 汇工(河北)机械集团有限公司 | Control method of liquid cooling charging gun, controller and charging pile |
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